CN114744453B

CN114744453B - Camera cable assembly and camera device

Info

Publication number: CN114744453B
Application number: CN202210386037.7A
Authority: CN
Inventors: 张子龙; 许孝晨; 李杨; 王聪睿; 颜财盛
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2023-10-27
Anticipated expiration: 2042-04-13
Also published as: CN114744453A

Abstract

A camera cable assembly and a camera device are disclosed, which relate to the technical field of monitoring and are used for simplifying customer operation and improving usability. The camera cable assembly includes a first cable assembly and a second cable assembly. One end of the first cable component comprises a network port for being connected with the camera main body, and the other end of the first cable component at least comprises a first connecting part; one end of the second cable assembly comprises a second connecting part, and the other end of the second cable assembly at least comprises at least one of an audio interface, a video interface, an alarm interface and a communication interface. According to the camera cable assembly provided by the application, the second connecting part can be detachably spliced with the first connecting part, when the network port is connected with the camera main body and the second connecting part is spliced with the first connecting part, the camera main body can be electrically connected with at least one external device through the second cable assembly, so that the effect of convenience and rapidness in disassembly is realized; therefore, the operation of clients can be simplified, and the usability is improved.

Description

Camera cable assembly and camera device

Technical Field

The present application relates to the field of monitoring technologies, and in particular, to a camera cable assembly and an imaging device.

Background

The external connection line of the camera is mainly used for power input and video output of the camera.

At present, the external wiring of the commonly adopted video camera is provided with a power cable, a video cable, a network cable and the like, and is provided with corresponding functional connectors. Because of the requirements of various functions, the functional interfaces in the external wiring of the camera are more, and when a user needs to use one interface (for example, a common functional interface: a power interface), the external wiring integrated with all the functional interfaces also has to be carried, so that the external wiring is extremely inconvenient to use.

Disclosure of Invention

The application provides a camera cable assembly and a camera device, which can simplify customer operation and improve usability.

In a first aspect, the present application provides a camera cable assembly comprising: a first cable assembly having one end including a network port for connection with a camera body; the other end of the first cable assembly at least comprises a power interface, a network cable interface and a first connecting part; one end of the second cable assembly comprises a second connecting part, and the second connecting part can be detachably spliced with the first connecting part; the other end of the second cable assembly at least comprises at least one of an audio interface, a video interface, an alarm interface and a communication interface; when the network port is connected with the camera body and the second connection part is spliced with the first connection part, the camera body can be electrically connected with at least one external device through the second cable assembly.

In a second aspect, the present application provides an image pickup apparatus comprising: a camera body provided with a tail line interface; and, a camera cable assembly as in any preceding claim, a network port of the camera cable assembly being connected with a tail line interface of the camera body.

The present application provides a camera cable assembly comprising: a first cable assembly and a second cable assembly; one end of the first cable assembly can be connected with the camera main body, a first connecting part contained at the other end of the first cable assembly can be connected with one end of the second cable assembly, and the other end of the second cable assembly is connected with at least one external device, so that the camera main body is electrically connected with the at least one external device through the first cable assembly and the second cable assembly; in addition, the application changes a longer external connection function cable connected with the camera main body into an external connection cable assembly which is formed by the first cable assembly and the second cable assembly and is convenient to split and connect, thereby realizing the effect of convenient disassembly and simplifying the operation of customers; and the common functional interfaces (such as a power interface and a network cable interface) and other functional interfaces (such as an audio interface, a video interface, an alarm interface and a communication interface) are arranged separately, so that the usability of the camera cable assembly is improved.

The beneficial effects of the camera device and the camera cable provided by the application are the same as those of the camera cable assembly provided by the technical scheme, and are not described in detail herein.

Drawings

Fig. 1 is a schematic structural diagram of a camera cable assembly according to an embodiment of the present application;

FIG. 2 is an enlarged view at C in FIG. 1;

FIG. 3 is an enlarged view of FIG. 1 at D;

fig. 4 is a structural diagram of a first connection portion and a second connection portion of a camera cable assembly according to an embodiment of the present application;

fig. 5 is a structural diagram of a circuit board according to an embodiment of the present application;

FIG. 6 is a block diagram of a control chip according to an embodiment of the present application;

FIG. 7 is a block diagram of an alarm input circuit according to an embodiment of the present application;

FIG. 8 is a block diagram of an alarm output circuit according to an embodiment of the present application;

fig. 9 is a block diagram of a buck-boost circuit according to an embodiment of the present application;

fig. 10 is a block diagram of a signal conversion circuit according to an embodiment of the present application;

FIG. 11 is a block diagram of a filter tuning circuit according to an embodiment of the present application;

fig. 12 is a block diagram of an image capturing apparatus according to an embodiment of the present application.

Detailed Description

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone.

The terms "first" and "second" and the like in the description and in the drawings are used for distinguishing between different objects or between different processes of the same object and not for describing a particular order of objects.

Furthermore, references to the terms "comprising" and "having" and any variations thereof in the description of the present application are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may optionally include other steps or elements not listed or inherent to such process, method, article, or apparatus.

It should be noted that, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In the description of the present application, unless otherwise indicated, the meaning of "a plurality" means two or more.

Referring to fig. 1, some embodiments of the present application provide a camera cable assembly 100. The camera cable assembly 100 includes: a first cable assembly a and a second cable assembly B.

One end 1 of the first cable assembly a comprises a network port 10 for connection with a camera body.

The other end 2 of the first cable assembly a comprises at least: a power interface 21, a network cable interface 22 and a first connection 23.

Wherein the power interface 21 is connectable to an external power supply device. The network interface 22 is used for connecting with external network devices.

In some examples, the power interface 21 employs a DC (Direct current) connector, the pin of which is a split pin. The needle core of the DC connector is arranged as a split needle core, so that the stability of the DC connector in plug-in connection can be improved, and the stable supply of a power supply is ensured.

One end 3 of the second cable assembly B includes a second connection portion 30; the other end 4 of the second cable assembly B comprises at least one of an audio interface 41, a video interface 42, an alarm interface 43, a communication interface 44.

In some examples, with continued reference to fig. 1, the audio interface 41 includes an audio input interface 411 and an audio output interface 412.

Wherein the number of audio input interfaces 411 and the number of audio output interfaces 412 may be one or more. For example, the number of audio input interfaces 411 is 2, and the number of audio output interfaces 412 is 1, as shown in fig. 1.

In some examples, video interface 42 employs a BNC (Bayonet New il-Concelman, neil-Kang Saiman Bayonet, simply referred to as BNC) connector. The BNC interface comprises a female port and a male port, and the female port and the male port are in butt joint, so that the connection between the video interface 42 and external equipment can be realized.

The BNC female port comprises an outer die and a solid pin, and one end of the solid pin is sleeved in the outer die and connected with a video cable where the video interface is located; contact spring plates are arranged on two sides of the other end of the solid contact pin. The BNC connector adopts a solid contact pin structure, so that the stability of plugging and receiving external force can be effectively improved, the stability of video interface receiving video signals is ensured, and contact elastic sheets are arranged at two sides of the solid contact pin, so that the stability of plugging can be further improved, and the plugging loose phenomenon is prevented.

In some examples, with continued reference to fig. 1, alarm interface 43 includes an alarm input interface 431 and an alarm output interface 432.

Wherein the number of alarm input interfaces 431 and the number of alarm output interfaces 432 may be one or more. For example, the number of alarm input interfaces 431 is 3, and the number of alarm output interfaces 432 is 2, as shown in fig. 1.

In some examples, the second connection portion 30 is removably insertable with the first connection portion 23.

It should be noted that the detachable connection may be a connection manner that is fixed by friction, or may be a conventional snap connection, magnetic connection, or the like.

When the network port 10 is connected to the camera body and the second connection part 30 is plugged into the first connection part 23, the camera body can be electrically connected to at least one external device via the second cable assembly B.

By way of example, the at least one device may be an alarm device, a detection device, or the like.

Some embodiments of the present application provide a camera cable assembly 100 comprising: a first cable assembly a and a second cable assembly B; one end 1 of the first cable assembly a may be connected to the camera body, and the other end 4 of the second cable assembly B may be connected to at least one external device through a first connection portion 23 included at the other end of the first cable assembly a, thereby electrically connecting the camera body to the at least one external device through the first cable assembly a and the second cable assembly B; in addition, the application changes a longer external connection function cable connected with the camera main body into an external connection cable assembly which is formed by the first cable assembly A and the second cable assembly B and is convenient to split and connect, thereby realizing the effect of convenient disassembly and simplifying the operation of customers; and the common functional interfaces (such as the power interface 21 and the network cable interface 22) and other functional interfaces (such as the audio interface 41, the video interface 42, the alarm interface 43 and the communication interface 44) are separately arranged, so that the usability of the camera cable assembly 100 is improved.

In some embodiments, referring to fig. 2, the first connection portion 23 includes a first electrical connector 231.

Illustratively, as shown in fig. 2, the first connecting portion 23 further includes a housing 232, and the first electrical connector 231 is located within the housing 232.

Referring to fig. 3, the second connecting portion 30 includes: a protective housing 301, a second electrical connector 302, and a circuit board 303.

In some examples, the protective housing 301 is a resin protective tube. The resin protection tube has good corrosion resistance, the cable is arranged in the resin protection tube in a penetrating way, the environment which is outdoor for a long time can be well protected, the corrosion is not easy, and the service life is prolonged.

In some examples, the protective housing 301 is secured to the second electrical connector 302 and the circuit board 303 by in-mold molding.

In-mold injection is to inject gum into an injection mold cavity and place the gum in a high temperature environment until the rubber is molded.

With continued reference to fig. 3, a second electrical connector 302 is disposed in the protective housing 301.

When the network port 10 is connected to the camera body and the second connection portion 30 is plugged into the first connection portion 23, the first electrical connector 231 is electrically connected to the second electrical connector 302.

In some examples, the first electrical connector 231 and the second electrical connector 302 may be aviation plugs. For example, the first electrical connector 231 may be a female socket, and the second electrical connector 302 may be a male socket; alternatively, the first electrical connector 231 is a male socket and the second electrical connector 302 is a female socket.

The male seat and the female seat of the aviation plug are in butt joint, so that the first cable assembly A and the second cable assembly B are electrically connected, namely, a complete external cable of the video camera is formed and is used for power input and video output of the video camera main body.

With continued reference to fig. 3, the circuit board 303 is disposed in the protective housing 301; the circuit board 303 is connected to the second electrical connector 302.

In some examples, the circuit board 303 and the second electrical connector 302 are connected by soldering. Thus, a problem of poor connection between the circuit board 303 and the second electrical connector 302 is not likely to occur.

The circuit board is an important electronic component, is a support for electronic components, and is a carrier for electrically connecting electronic components to each other.

When the network port 10 is connected to the camera body and the second connection portion 30 is plugged into the first connection portion 23, the first electrical connector 231 is electrically connected to the second electrical connector 302, and the circuit board 303 can convert the received electrical signal into at least one functional signal and output the converted at least one functional signal to at least one external device.

Wherein, the function signal can include at least one of an alarm output signal and a differential signal.

It should be noted that differential transmission is a signal transmission technology, and is different from the conventional method of one signal line and one ground line, in that differential transmission transmits signals on two lines, and the two signals have equal amplitudes, 180 degrees phase difference and opposite polarities. The signals transmitted on these two lines are differential signals.

In this embodiment, the first connection portion 23 includes a first electrical connector 231, the second connection portion 30 includes a second electrical connector 302, and when the second connection portion 30 is plugged into the first connection portion 23, the first electrical connector 231 is electrically connected to the second electrical connector 302, so as to electrically connect the first cable assembly a and the second cable assembly B; moreover, the second connection part 30 includes a circuit board 303, and the circuit board 303 can convert the received electrical signal into at least one functional signal and output the converted at least one functional signal to at least one of the external devices, so that the problem that the integration level of the internal circuit module of the camera is high and the practicability is narrow can be solved by arranging the modularized functional circuit on the camera cable assembly 100, and the applicability of the camera becomes wider.

In some embodiments, one of the first connection portion 23 and the second connection portion 30 includes: the plug-in cavity and the clamping groove are positioned on the inner peripheral surface of the plug-in cavity; the other of the first connection part 23 and the second connection part 30 includes: the plug-in part and the clamping protrusion on the outer peripheral surface of the plug-in part.

Wherein, when the second connecting portion 30 is plugged with the first connecting portion 23, the plugging portion is inserted into the plugging cavity, and the clamping protrusion is clamped in the clamping groove, so as to realize fixed connection.

In some examples, the first connection portion 23 includes a socket portion and a snap-in protrusion on an outer peripheral surface on the socket portion. The second connecting portion 30 includes a socket cavity and a clamping groove on an inner peripheral surface of the socket cavity.

In some examples, as shown in fig. 4, the first connection portion 23 includes a socket cavity 233 and a clamping groove 234 located on an inner circumferential surface m of the socket cavity 233. The second connection part 30 includes: a plug-in portion 304 and a snap-in protrusion 305 located on an outer peripheral surface n of the plug-in portion 304.

When the second connecting portion 30 is plugged with the first connecting portion 23, the plugging portion 304 is inserted into the plugging cavity 233, and the clamping protrusion 305 is clamped in the clamping groove 234.

It should be noted that the number of the clamping grooves 234 and the clamping protrusions 305 may be one or more, and one clamping groove 234 and one clamping protrusion 305 are matched and clamped. Thereby, the second connection portion 30 is inserted into the first connection portion 23; moreover, the assembly mode effectively avoids the phenomenon that the internal space of the connecting part is reduced or the connector is positioned and offset due to screwing, so that the first cable component A and the second cable component B are prevented from being powered off when being connected, and the assembly mode is simple and flexible to assemble and disassemble and convenient to use.

In some embodiments, the other of the first connection portion 23 and the second connection portion 30 further comprises: an annular groove and a seal.

In some examples, when the first connection portion 23 includes a socket portion and a snap protrusion on an outer circumferential surface of the socket portion, the second connection portion 30 includes a socket cavity and a snap groove on an inner circumferential surface of the socket cavity, the first connection portion 23 further includes: an annular groove and a seal.

In some examples, the first connection part 23 includes a socket cavity 233 and a clamping groove 234 on an inner circumferential surface m of the socket cavity 233, and the second connection part 30 includes: when the plug-in portion 304 and the engaging protrusion 305 are located on the outer peripheral surface n of the plug-in portion 304, the second connecting portion 30 further includes: annular groove 306 and seal 307 as shown in fig. 4.

Wherein, the annular groove 306 is positioned on the outer peripheral surface of the plug-in connection part 304; the annular groove 306 is further away from the other end 4 of the second cable assembly B than the snap-in protrusion 305. The seal 307 is mounted to the annular groove 306.

When the second connecting portion 30 is plugged with the first connecting portion 23, the plugging portion 304 is inserted into the plugging cavity 233, the clamping protrusion 305 is clamped in the clamping groove 234, the sealing member 307 is extruded by the annular groove 306 and the inner circumferential surface m of the plugging cavity 233, the extrusion sealing surface is large, and the sealing performance is good, so that the camera cable assembly 100 has good waterproof performance and long service life.

In some embodiments, the second connection portion 30 is capable of receiving an electrical signal from the camera body when the network port 10 is connected to the camera body and the second connection portion 30 is plugged into the first connection portion 23.

Referring to fig. 3 and 5, the second connecting portion 30 includes a circuit board 303. The circuit board 303 includes an interface circuit 51, a control chip 52, and an output circuit 53.

With continued reference to fig. 5, the control chip 52 includes a communication input pin and a communication output pin, the communication input pin is connected to the interface circuit 51, and the communication output pin is connected to the output circuit 53.

Wherein, the electric signal from the camera body can be transmitted to the control chip 52 via the interface circuit 51, and converted into at least one functional signal by the control chip 52 and output to at least one of the external devices.

In this embodiment, the circuit board 303 includes an interface circuit 51, a control chip 52 and an output circuit 53, where the electrical signal received by the interface circuit 51 can be converted into at least one functional signal under the action of the control chip 52, and the converted at least one functional signal is output to at least one external device, so that the camera cable assembly 100 implements various functional requirements, and the problem that the integration level of the internal circuit module of the camera is high and the practicability is narrow is solved by setting the modularized functional circuit on the camera cable assembly 100, so that the applicability of the camera becomes wider.

In some embodiments, the second connection part 30 is capable of receiving an alarm signal from at least one of the external devices when the network port 10 is connected to the camera body and the second connection part 30 is plugged into the first connection part 23.

The second cable assembly B includes an alarm input tail wire harness; the control chip 52 includes an alarm input pin.

With continued reference to fig. 5, the circuit board 303 further includes: an alarm input circuit 54.

The alarm input circuit 54 is connected with the alarm input pin and the alarm input tail wire bundle; the alarm input circuit 54 is configured to receive an alarm signal from the alarm input tail and transmit the alarm signal to the control chip 52; the control chip 52 converts the received alarm signal into an alarm input signal in response to the alarm signal from the alarm input circuit 54, and outputs the converted alarm input signal to the camera body through the interface circuit 51.

In this embodiment, one end of the alarm input tail wire harness is connected to the alarm input circuit 54, and the other end of the alarm input tail wire harness may be connected to a detection device. The alarm input circuit 54 receives the alarm signal sent by the detection device through the alarm input tail wire harness, and sends a first level signal to the control chip 52 according to the alarm signal, where if the alarm signal indicates an alarm, the first level signal is a first low level signal; if the alarm signal indicates that the alarm is not given, the first level signal is a first high level signal.

For example, the input voltage of the voltage input terminal of the alarm input circuit 54 is 3.3V, if the alarm signal indicates an alarm, the alarm signal may be a low level signal, alternatively, the alarm signal for indicating an alarm may be a level signal lower than 0.7V, where the first level signal output by the alarm input circuit 54 is a first low level signal for indicating an alarm.

If the alarm signal indicates no alarm, the alarm signal may be a high level signal, alternatively, the alarm signal for indicating an alarm may be a level signal between 3.3V and 12V. The embodiments of the present application are not limited in this regard. At this time, the first level signal output from the alarm input circuit 54 is a high level signal for indicating that no alarm is given.

Thereby, an alarm signal of at least one of the external devices (for example, the above-mentioned detecting device) is converted into an alarm input signal via the alarm input circuit 54, the control chip 52 and the interface circuit 51, the alarm input signal is outputted to the camera main body, and the camera main body generates a corresponding action or instruction (for example, focusing, instruction to sound, etc.) according to the alarm input signal, and instructs the camera main body to perform the action or instruction (for example, focusing, instruction to sound, etc.).

In some embodiments, the second connection 30 is capable of receiving an alarm output signal from the camera body when the network port 10 is connected to the camera body and the second connection 30 is plugged into the first connection 23.

The second cable assembly B includes an alarm output tail wire harness; the control chip 52 includes an alarm output pin.

With continued reference to fig. 5, the output circuit 53 includes: and an alarm output circuit 531. The alarm output circuit 531 is connected between the alarm output pin of the control chip 52 and the output circuit 53.

The control chip 52 is further configured to: in response to an alarm output signal from the camera body, an alarm instruction is sent to the external device through the alarm output circuit 531.

In this embodiment, one end of the alarm output tail wire harness is connected to the alarm output circuit 531, and the other end of the alarm output tail wire harness may be connected to an alarm device. An alarm output signal from the camera body is input to the control chip 52 through the interface circuit 51, and the control chip 52 transmits an alarm instruction to an alarm device through the alarm output circuit 531 in response to the alarm output signal.

In some embodiments of the present application, the specific structures of the interface circuit 51, the control chip 52, the output circuit 53, the alarm input circuit 54, and the alarm output circuit 531 are not limited.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a control chip 52 according to some embodiments of the application.

As shown IN fig. 6, the ALRM-IN1 pin, the ALRM-IN2 pin, and the ALRM-IN3 pin of the control chip 52 are the alarm input pins, and are connected to the output end of the alarm input circuit 54, for receiving the first level signal sent by the alarm input circuit 54.

The ALRM-OUT1 pin and the ALRM-OUT2 pin of the control chip 52 are the alarm output pins, and are connected with the input end of the alarm output circuit 531, so as to send an alarm instruction to an alarm device through the alarm output circuit 531.

Illustratively, table 1 is a table of labels and functional descriptions of the pins of the control chip 52. For a functional description of the pins of the control chip 52, see table 1:

TABLE 1

It should be noted that, the signal format supported by the camera body is typically a serial signal format. The PA2 pin of the control chip 52 is used for sending a serial signal to the camera body through the interface circuit 51. The PA3 pin of the control chip 52 is configured to receive a serial signal output by the camera body through the interface circuit 51.

With continued reference to fig. 6, in the circuit diagram shown in fig. 6, the NRST pin of the control chip 52 may be connected to the interface circuit 51.

Wherein the resistor RH48 is used to eliminate spikes.

Capacitor CMS134 is used to filter the signal from interface circuit 51 to reduce noise in the signal.

With continued reference to fig. 6, in the circuit diagram shown in fig. 6, R7673 is a pull-up resistor, so as to prevent the level of the serial signal from being unstable during transmission.

Capacitance CMS106, capacitance CMS133, RMS92 and RMS411 form a serial RC circuit, which can effectively prevent EMI (Electromagnetic Interference ) problems.

It should be noted that the primary RC circuit is composed of one resistor and one capacitor. The resistor-capacitor arrangement can be divided into an RC series circuit and an RC parallel circuit; the simple RC parallel cannot resonate because the resistor does not store energy and the LC parallel can resonate. RC circuits are widely used in analog circuits and pulse digital circuits, and RC parallel circuits have the effect of attenuating low-frequency signals if connected in series in the circuit, and have the effect of attenuating high-frequency signals, namely filtering, if connected in parallel in the circuit.

With continued reference to fig. 6, in the circuit diagram shown in fig. 6, the PB4 pin of the control chip 52 may be connected to one of the alarm input circuits 54.

The resistor RMS299 is a reserved resistor for eliminating spike signals. Illustratively, in the absence of spikes, the resistance of resistor RMS299 is 0Ω; when there is a spike, the spike is eliminated by setting the resistance of the resistor RMS299 to 1kΩ or 2kΩ.

Capacitor CMS130 is used to filter the signal from alarm input circuit 54 to reduce noise in the signal.

The PA13 pin of the control chip 52 may be connected to one of the alarm input circuits 54.

The resistor RMS298 is a reserved resistor for eliminating spikes. Illustratively, in the absence of a spike, the resistance of resistor RMS298 is 0Ω; when there is a spike, the spike is eliminated by setting the resistance value of the resistor RMS298 to 1kΩ or 2kΩ.

The capacitor CMS129 is used to filter the signal from the alarm input circuit 54 to reduce noise in the signal.

The PB1 pin of the control chip 52 may be connected to one of the alarm input circuits 54.

The resistor RMS309 is a reserved resistor for eliminating spike signals. Illustratively, without spikes, the resistance of resistor RMS309 is 0Ω; when there is a spike, the spike is eliminated by setting the resistance value of the resistor RMS309 to 1kΩ or 2kΩ.

Capacitor CMS132 is used to filter the signal from alarm input circuit 54 to reduce noise in the signal.

With continued reference to fig. 6, in the circuit diagram shown in fig. 6, the PA4 pin, the PA5 pin, the PA6 pin, the PA7 pin, and the PB0 pin of the control chip 52 are mainly used in debugging the control chip 52.

The resistor R7741 and the resistor R7740 are pull-up resistors.

Referring to fig. 7, fig. 7 is a schematic diagram illustrating an alarm input circuit 54 according to some embodiments of the application.

As shown in fig. 7, the alarm input circuit 54 may include a diode D21, an RC circuit, and a pull-up resistor R103.

The cathode of the diode D21 is used for being connected with the monitoring device, the anode of the diode D21 is respectively connected with the pull-up resistor R103 and the RC circuit, the pull-up resistor R103 is also connected with the power supply voltage of the alarm input circuit 54, and the RC circuit is also connected with the control chip 52.

The ALARM signal is input to the diode D21 through the input end ALARM-IN01 of the ALARM input circuit 54, the anode of the diode D21 is pulled up to a 3.3V power supply through the pull-up resistor R103, if the level signal of the ALARM signal is greater than the voltage input by the voltage input end ALARM-IN01 of the ALARM input circuit 54, the diode is not conducted, and the first level signal output by the output end ALARM-IN 1 of the ALARM input circuit is a first high level signal; if the level signal of the ALARM signal is smaller than the voltage input by the voltage input terminal ALARM-IN01 of the ALARM input circuit 54, the diode is turned on, and the first level signal output by the output terminal ALARM-IN 1 of the ALARM input circuit 54 is the first low level signal, so that the ALARM input circuit can output different first level signals by controlling the level signal of the ALARM signal.

The RC circuit comprises a resistor 100 and a capacitor C953, so that the edge of the alarm signal is smooth.

Capacitor C951 is grounded. The capacitor C951 is used to suppress a malfunction burr signal.

Referring to fig. 8, fig. 8 is a schematic diagram illustrating an alarm output circuit 531 according to some embodiments of the application.

As shown in fig. 8, the alarm output circuit 531 includes: transistor Q3, surge suppression circuit.

The base 1 of the triode Q3 is connected with the control chip 52, the emitter 2 of the triode Q3 is grounded, and the collector 3 of the triode Q3 is connected with the alarm device.

The control chip 52 is used for inputting a level signal according to the alarm output signal, and the triode Q3 is switched on or off according to the level signal to control whether the alarm device acts.

In the circuit diagram shown in fig. 8, the control chip 52 is connected to the base of the transistor Q3 through a pin PB 6. The surge suppression circuit includes a surge protection device TVAM2.

Resistor R57 is used to avoid direct grounding of the control chip 52.

Resistor R58 is a current limiting resistor for transistor Q3.

Resistor R59 may act as a voltage divider for the initial level signal to base 1 of transistor Q3. In some examples, the resistance of resistor R59 may be 4.7kΩ.

The capacitor C74 is used to filter out abnormal glitch signals.

In some embodiments, the second connection portion 30 is capable of receiving a first power signal from the camera body when the network port 10 is connected to the camera body and the second connection portion 30 is plugged into the first connection portion 23.

With continued reference to fig. 5, the circuit board 303 further includes: step-up/down circuit 55.

The step-up/step-down circuit 55 is connected to the interface circuit 51.

The step-up/step-down circuit 55 is configured to: the method includes converting a first power signal from the camera body into a second power signal, and transmitting the second power signal to at least one of the external devices.

Wherein the voltage of the second power supply signal is greater than or less than the voltage of the first power supply signal.

In some embodiments of the present application, the specific structure of the step-up/step-down circuit 55 is not limited.

Referring to fig. 9, fig. 9 is a schematic diagram illustrating a step-up/step-down circuit 55 according to some embodiments of the application. The step-up/step-down circuit 55 is a 12V power supply return circuit. The 12V power supply return circuit boosts the 5V power supply to 12V by the booster power supply chip U99, returns the boosted power supply to the output circuit 53, and outputs the 12V power supply.

The 1 pin of the boost power supply chip U99 is connected with the output end of the 12V power supply return circuit; the 2 pin of the boost power supply chip U99 is used for grounding; the 3 pins of the boost power supply chip U99 are used for monitoring the output voltage in real time; the 4 pins of the boost power supply chip U99 are used for supplying power to the inside of the boost power supply chip U99; the 5 pins of the boost power supply chip U99 play a role in overcurrent protection; pin 6 of boost power supply chip U99 is used to input a 5V supply voltage.

The capacitor C952, the capacitor CP97, and the capacitor C60188 are used for guaranteeing stability of the input voltage.

The resistor RN95 and the capacitor C966 are used for setting the chip start-up time.

The inductor L7 is used to stabilize the output current.

The diode D42 and the diode DV21 are used to prevent current backflow.

The resistor R7739 is used for protecting the boost power supply chip U99 from overcurrent.

The resistor R392 is used to prevent the voltage fed back through the 3 pin from causing excessive current impact to the devices inside the boost power chip U99.

Resistor R121 and resistor R397 mainly function as voltage dividing.

The resistor R11 and the inductance capacitor C19 form an RC series circuit, so that the problem of EMI (Electromagnetic Interference ) can be effectively prevented.

The capacitor CN185 is used to stabilize the voltage fed back.

Capacitor C6089, capacitor C60274, capacitor C60275, capacitor C116, capacitor C117, capacitor C118, capacitor CV367, and capacitor CV368 are used to stabilize the output current.

The surge protection device TVSOP1 is used to avoid the surge from damaging other devices in the loop.

The fuse F5 is used for fusing in time when the equipment is short-circuited, so that the safety of the equipment is protected.

In some embodiments, when the network port 10 is connected to the camera body and the second connection portion 30 is plugged into the first connection portion 23, the control chip 52 is configured to: in response to the electrical signal received by the interface circuit 51, the received electrical signal is converted into a first communication signal.

With continued reference to fig. 5, the output circuit 53 further includes: a signal conversion circuit 532.

The signal conversion circuit 532 is connected to the communication output pin.

The signal conversion circuit 532 is configured to: and converting the first communication signal from the control chip into a second communication signal, wherein the anti-interference capability of the second communication signal is larger than that of the first communication signal.

In some embodiments of the present application, the specific structure of the signal conversion circuit 532 is not limited.

Referring to fig. 10, fig. 10 is a schematic diagram illustrating a signal conversion circuit 532 according to some embodiments of the application. The signal conversion circuit 532 is a 485 transceiver circuit. The 485 transceiver circuit may convert the 485 signal (i.e., the first communication signal) into a remotely transmittable 485 differential signal (i.e., the second communication signal).

The input ends RS485-Tx and RS485-CTRL of the signal conversion circuit 532 are respectively connected with pins PA8 and PA9 of the control chip 52. The input terminals RS485-Rx are connected to the pin PA10 of the control chip 52.

The signal conversion circuit 532 includes a chip U46. The 485 signal is converted into a 485 differential signal through the chip U46, and is output to the output circuit 53.

The 1 pin of the chip U46 is connected to the pin PA10 of the control chip 52. The pin 2 of the chip U46 and the pin 3 of the chip U46 are connected with the pin PA9 of the control chip 52. The pin 4 of the chip U46 is connected to the pin PA8 of the control chip 52. The 5 pin of the chip U46, the 6 pin of the chip U46, and the 7 pin of the chip U46 are connected to the output circuit 53. The 5 pins of the chip U46 and the 8 pins of the chip U46 are connected.

In the circuit diagram shown in fig. 10, the signal conversion circuit 532 includes two stages of surge protection. The surge protection devices TVS4 and TVS5 are primary surge protection devices; the surge protection device U48 and the surge protection device U49 are two-stage protection, and the purpose of the two-stage protection is to protect residual voltage remained after the first-stage protection.

The signal conversion circuit 532 includes a pull-up resistor R97 and a pull-down resistor R772. The level of the differential signal lines is also made more stable in operation.

The resistor R96 and the resistor R97 are pull-up resistors.

Diode D28 is used to prevent current backflow.

Resistor RS275 is the default pull-down resistor.

Resistor R722 is a pull-down resistor.

The inductors C954 and C955 are used to stabilize the operation of the chip U46.

The resistor R98, the resistor R99, the surge device TVS4 and the surge device TVS5 are used for preventing surges and avoiding damages to other devices in the loop caused by surges.

Note that, when the resistor RS275 is a default pull-down resistor, the communication signal of the 485 transceiver circuit is input by default. That is, the 485 transceiver circuit may convert a 485 signal (i.e., a first communication signal) into a 485 differential signal, and input the 485 differential signal to the control chip 52 through the pin PA10 of the control chip 52.

When the control chip 52 inputs a high level to the signal conversion circuit 532 input terminals RS485-CTRL, the communication signal of the 485 transceiver circuit is outputted by default. That is, the 485 transceiver circuit may convert a 485 signal (i.e., a first communication signal) into a 485 differential signal and output to an external device.

In some embodiments, referring to fig. 5, the circuit board 303 further includes: a guard circuit 56.

The protection circuit 56 is connected between the communication output pin and the output circuit 53; the protection circuit 56 is configured to reduce voltage fluctuations and electrostatic interference of the first communication signal sent by the control chip 52.

In some examples, the protection circuit 56 protects the signal from static interference at the safety level using an overvoltage protection device TVS diode (Transient voltage suppression diode ) while adding an RC (Resistor-Capacitance circuit, resistor-capacitor compensation circuit) circuit to keep the module from EMI (Electromagnetic Interference ) problems.

It will be appreciated by those skilled in the art that a TVS diode is a protective electronic component that protects electrical devices from voltage spikes introduced by the wires.

The miniaturized TVS diode packaged by the partial SOD123 greatly reduces the volume of the protection circuit 56 when protecting against electrostatic interference. While the TVS diode packaged by the other part of SMB is designed to be compact in size and high in surge resistance up to 100A (10/1000 mu S).

In some embodiments, the control chip 52 also includes an analog voltage pin.

The circuit board 303 further includes: a filter tuning circuit 57.

The filter tuning circuit 57 is connected between the interface circuit 51 and the analog voltage pin.

The filter tuning circuit 57 is configured to: the first power supply signal from the interface circuit 51 is subjected to a filtering process to reduce noise of the first power supply signal.

In some embodiments of the present application, the specific structure of the filter tuning circuit 57 is not limited.

Referring to fig. 11, fig. 11 is a schematic diagram of a filter tuning circuit 57 according to some embodiments of the application.

The 3.3V-MCU of the input end of the filter tuning circuit 57 is connected with the interface circuit 51; the output end 3V3A of the filter tuning circuit 57 is connected to the VDDA pin of the control chip 52.

The filter tuning circuit 57 enables the power supply to filter high-frequency power supply noise after conversion by simultaneously connecting in parallel with the ground a plurality of filter capacitors CA462, CA461 and CA463 with different capacitance values.

Wherein the filter capacitor CA462 is a 1nF capacitor, the filter capacitor CA461 is a 100nF capacitor, and the filter capacitor CA463 is a 10uF capacitor.

The filter capacitor CA464, the filter capacitor CA465 and the filter capacitor CA466 enable the power supply to filter high-frequency power supply noise after conversion.

Resistor RA25 is used to make the current and voltage effects at the input and output terminals smaller.

Referring to fig. 12, the present application further provides an image capturing apparatus 1000. The image pickup apparatus 100 includes a camera 200 and the above-described camera cable assembly 100.

Wherein the camera 200 is provided with a tail interface 210.

The network port 10 of the camera cable assembly 100 is connected to the tail interface 210 of the camera 200.

Illustratively, the network port 10 of the camera cable assembly 100 is removably plugged into the tail interface 210 of the camera 200.

The image pickup apparatus 1000 provided by the present application includes the camera 200 and the above-described camera cable assembly 100. In one aspect, the camera cable assembly 100 includes: a first cable assembly a and a second cable assembly B; one end 1 of the first cable assembly a may be connected to the camera body, and the first connection part 23 included at the other end of the first cable assembly a may be connected to one end 3 of the second cable assembly B, and the other end 4 of the second cable assembly B may be connected to at least one external device, thereby realizing the electrical connection of the camera to the at least one external device through the camera cable assembly 100, and modifying a conventional one longer external function cable connected to the camera body into an external cable assembly composed of the first cable assembly a and the second cable assembly B, which is convenient to disassemble and connect, thereby realizing the convenient and fast disassembly effect, and thus simplifying the customer operation; the common functional interfaces (such as the power interface 21 and the network cable interface 22) and other functional interfaces (such as the audio interface 41, the video interface 42, the alarm interface 43 and the communication interface 44) are arranged separately, so that the usability of the camera cable assembly 100 is improved; on the other hand, by providing the modularized functional circuit on the camera cable assembly 100, the problem of high integration level and narrow practicality of the internal circuit module of the camera can be solved, so that the applicability of the camera becomes wider.

Although the application is described herein in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "Comprising" does not exclude other elements or steps, and the "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the application has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the present application as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents that fall within the scope of the application. It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

The present application is not limited to the above embodiments, and any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A camera cable assembly, comprising:

a first cable assembly having one end including a network port for connection with a camera body; the other end of the first cable assembly at least comprises a power interface, a network cable interface and a first connecting part;

one end of the second cable assembly comprises a second connecting part, and the second connecting part can be detachably spliced with the first connecting part; the other end of the second cable assembly at least comprises at least one of an audio interface, a video interface, an alarm interface and a communication interface;

when the network port is connected with the camera main body and the second connecting part is spliced with the first connecting part, the camera main body can be electrically connected with at least one external device through the second cable assembly;

One of the first connection portion and the second connection portion includes: the plug-in cavity and the clamping groove are positioned on the inner peripheral surface of the plug-in cavity;

the other of the first connection portion and the second connection portion includes: the plug-in part and the clamping protrusion are positioned on the outer peripheral surface of the plug-in part;

when the second connecting part is spliced with the first connecting part, the splicing part is inserted into the splicing cavity, and the clamping protrusion is clamped in the clamping groove;

the other of the first connection portion and the second connection portion further includes:

an annular groove on the outer peripheral surface of the plug-in part, the annular groove being further away from the other end of the second cable assembly relative to the clamping protrusion;

and the sealing piece is arranged on the annular groove.

2. The camera cable assembly of claim 1, wherein,

the first connection portion includes a first electrical connector;

the second connection part includes:

a protective housing;

a second electrical connector disposed in the protective housing;

a circuit board disposed in the protective housing, the circuit board being connected to the second electrical connector;

when the network port is connected with the camera main body and the second connecting part is spliced with the first connecting part, the first electric connector is electrically connected with the second electric connector, the circuit board can convert a received electric signal into at least one functional signal and output the converted at least one functional signal to at least one external device, and the functional signal comprises at least one of an alarm output signal and a differential signal.

3. The camera cable assembly of claim 1, wherein the second connection is capable of receiving an electrical signal from the camera body when the network port is connected to the camera body and the second connection is plugged into the first connection;

the second connecting part comprises a circuit board; the circuit board includes: the interface circuit, the control chip and the output circuit;

the control chip comprises a communication input pin and a communication output pin, wherein the communication input pin is connected with the interface circuit, and the communication output pin is connected with the output circuit; the electric signal can be transmitted to the control chip through the interface circuit, converted into at least one functional signal by the control chip and output to at least one external device.

4. A camera cable assembly as in claim 3, wherein,

when the network port is connected with the camera main body and the second connecting part is spliced with the first connecting part, the second connecting part can receive an alarm signal from at least one external device;

the second cable assembly includes an alarm input tail wire harness; the control chip comprises an alarm input pin;

The circuit board further includes: an alarm input circuit;

the alarm input circuit is connected with the alarm input pin and the alarm input tail wire bundle; the alarm input circuit is configured to receive an alarm signal from the alarm input tail line and transmit the alarm signal to the control chip;

the control chip is further configured to convert the received alarm signal into an alarm input signal in response to the alarm signal from the alarm input circuit, and output the converted alarm input signal to the camera body through the interface circuit;

when the network port is connected with the camera main body and the second connecting part is spliced with the first connecting part, the second connecting part can receive an alarm output signal from the camera main body;

the second cable assembly includes an alarm output tail wire harness; the control chip comprises an alarm output pin; the output circuit includes: an alarm output circuit; the alarm output circuit is connected between the alarm output pin and the alarm output tail wire harness;

the control chip is further configured to: and sending an alarm instruction to the external device through the alarm output circuit in response to an alarm output signal from the camera body.

5. The camera cable assembly of claim 3, wherein the second connection is capable of receiving a first power signal from the camera body when the network port is connected to the camera body and the second connection is plugged into the first connection;

the circuit board further includes:

the step-up and step-down circuit is connected with the interface circuit;

the buck-boost circuit is configured to: converting a first power signal from the camera body into a second power signal, and transmitting the second power signal to at least one of the external devices; wherein the voltage of the second power supply signal is greater than or less than the voltage of the first power supply signal.

6. The camera cable assembly of claim 3, wherein when the network port is connected with the camera body and the second connection portion is plugged with the first connection portion, the control chip is configured to: converting the received electrical signal into a first communication signal in response to the electrical signal received by the interface circuit;

the output circuit includes:

the signal conversion circuit is connected with the communication output pin;

The signal conversion circuit is configured to: converting a first communication signal from the control chip into a second communication signal, wherein the anti-interference capability of the second communication signal is larger than that of the first communication signal; and/or the number of the groups of groups,

the protection circuit is connected between the communication output pin and the output circuit; the protection circuit is configured to reduce voltage fluctuation and electrostatic interference of a first communication signal sent by the control chip.

7. The camera cable assembly of claim 3, wherein the second connection is capable of receiving a first power signal from the camera body when the network port is connected to the camera body and the second connection is plugged into the first connection;

the control chip also comprises an analog voltage pin;

the circuit board further includes:

the filtering optimization circuit is connected between the interface circuit and the analog voltage pin;

the filter tuning circuit is configured to: and filtering the first power supply signal from the interface circuit to reduce noise of the first power supply signal.

8. An image pickup apparatus, comprising:

A camera body provided with a tail line interface; the method comprises the steps of,

the camera cable assembly of any one of claims 1-7, a network port of the camera cable assembly being interfaced with a tail line of the camera body.