CN114744453A

CN114744453A - Camera cable assembly and image pickup apparatus

Info

Publication number: CN114744453A
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: 2022-07-12
Anticipated expiration: 2042-04-13
Also published as: CN114744453B

Abstract

The utility model discloses a camera cable subassembly and camera device relates to control technical field for simplify customer's operation, promote the ease for use. The camera cable assembly includes a first cable assembly and a second cable assembly. One end of the first cable assembly comprises a network port used for being connected with the camera main body, and the other end of the first cable assembly 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, the second connecting part can be detachably plugged with the first connecting part, when the network port is connected with the camera main body and the second connecting part is plugged with the first connecting part, the camera main body can be electrically connected with at least one external device through the second cable assembly, and the effect of convenience and quickness in disassembly is achieved; therefore, the operation of the client can be simplified, and the usability is improved.

Description

Camera cable assembly and image pickup apparatus

Technical Field

The application relates to the technical field of monitoring, in particular to a camera cable assembly and a camera device.

Background

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

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

Disclosure of Invention

The application provides a camera cable subassembly and camera device, can promote the ease for use with simplifying customer's operation.

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 supply interface, a network cable interface and a first connecting part; a second cable assembly having a second connection part at one end thereof, the second connection part being detachably inserted into the first connection 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 connecting part is plugged with the first connecting 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: the camera body is provided with a tail wire interface; and the camera cable assembly of any one of the above, wherein a network port of the camera cable assembly is connected with a tail interface of the camera body.

The application provides a camera cable assembly, includes: a first cable assembly and a second cable assembly; one end of the first cable assembly may be connected with the camera main body, one end of the second cable assembly may be connected with one end of the first cable assembly through a first connection part included in the other end of the first cable assembly, and the other end of the second cable assembly is connected with at least one external device, thereby achieving electrical connection of the camera main body with the at least one external device through the first cable assembly and the second cable assembly; moreover, the camera body is provided with a first cable assembly and a second cable assembly which are connected with each other, and the first cable assembly and the second cable assembly are connected with each other; and the common functional interfaces (such as a power supply 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 separately arranged, so that the usability of the camera cable assembly is improved.

The beneficial effect that camera device and camera cable that this application provided can realize is the same with the beneficial effect that camera cable subassembly that above-mentioned technical scheme provided can reach, does not do here and repeats repeatedly.

Drawings

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

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

FIG. 3 is an enlarged view taken at D in FIG. 1;

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

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

fig. 6 is a structural diagram of a control chip according to an embodiment of the present disclosure;

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 structural diagram of a buck-boost circuit according to an embodiment of the present disclosure;

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

fig. 11 is a structural diagram of a filtering and tuning circuit according to an embodiment of the present disclosure;

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

Detailed Description

The term "and/or" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone.

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

Furthermore, the terms "including" and "having," and any variations thereof, as referred to in the description of the present application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively 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 "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

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

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 includes 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 with an external power supply device. The network cable interface 22 is used for connecting with an external network device.

In some examples, the power interface 21 employs a DC (Direct current) connector, the core of which is a split core. The needle core of the DC connector is a forked needle core, so that the stability of inserting the DC connector 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 includes at least one of an audio interface 41, a video interface 42, an alarm interface 43, and a communication interface 44.

In some examples, continuing with fig. 1, audio interface 41 includes an audio input interface 411 and an audio output interface 412.

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

In some examples, video interface 42 employs a BNC (Bayonet Neill-Concelman, Neille-Consamann Bayonet, BNC for short) connector. The BNC interface includes a female port and a male port, and the connection between the video interface 42 and the external device can be realized by docking the female port and the male port.

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

In some examples, continuing with reference to fig. 1, the alert interface 43 includes an alert input interface 431 and an alert output interface 432.

The number of the alarm input interfaces 431 and the number of the 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 detachably pluggable with the first connection portion 23.

It should be noted that the detachable insertion may be a connection method that is fixed by friction force, and may also be a conventional snap connection, a magnetic connection, or the like.

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 camera body can be electrically connected to at least one external device via the second cable assembly B.

Illustratively, 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 part 23 included in the other end of the first cable assembly a, whereby the camera body is electrically connected to the at least one external device through the first and second cable assemblies a and B; moreover, the camera body is provided with a first cable component A and a second cable component B, and the first cable component A and the second cable component B are connected with each other by the first cable component A and the second cable component B; 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 in 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 penetrates through the resin protection tube and can be well protected even in outdoor environment for a long time, the cable is not easy to corrode, 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 way of in-mold molding.

In the in-mold injection, the gum is injected into an injection mold cavity and placed in a high-temperature environment until the rubber is molded.

Referring to fig. 3, the second electrical connector 302 is disposed in the protection 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 connector and the second electrical connector 302 is a female connector.

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 camera external cable is formed and is used for power input and video output of the camera main body.

Referring to fig. 3, the circuit board 303 is disposed in the protection 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 unlikely to occur.

The circuit board is an important electronic component, a support for electronic components, and a carrier for electrically interconnecting electronic components.

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 is capable of converting the received electrical signal into at least one functional signal and outputting the converted at least one functional signal to at least one external device.

Wherein the function signal may comprise 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 a traditional method of one signal line and one ground line, and differential transmission transmits signals on both lines, and the two signals have equal amplitudes, 180 degrees phase difference, and opposite polarities. The signals transmitted on these two wires 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 that the first cable assembly a and the second cable assembly B are electrically connected; further, the second connection portion 30 includes a circuit board 303, and the circuit board 303 is capable of converting the received electrical signal into at least one functional signal and outputting the converted at least one functional signal to at least one external device, whereby by providing a modular functional circuit on the camera cable assembly 100, it is possible to solve the problems of high integration of the internal circuit module of the camera and narrow practicality, and thus 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 clamping groove is positioned on the inner peripheral surface of the insertion cavity; the other of the first connection portion 23 and the second connection portion 30 includes: the plug part and the clamping bulge are positioned on the peripheral surface of the plug part.

When the second connecting portion 30 is connected with the first connecting portion 23 in an inserting mode, the inserting portion is inserted into the inserting cavity, and the clamping protrusions are clamped in the clamping grooves, so that fixed connection is achieved.

In some examples, the first connection portion 23 includes a plug portion and a snap projection on an outer peripheral surface of the plug portion. The second connection portion 30 includes an insertion cavity and a catching groove on an inner circumferential surface of the insertion cavity.

In some examples, as shown in fig. 4, the first connection portion 23 includes a plug cavity 233 and a snap groove 234 on an inner circumferential surface m of the plug cavity 233. The second connection portion 30 includes: a plug part 304 and a clamping protrusion 305 on the outer peripheral surface n of the plug part 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 can 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 deviated due to screwing, and further avoids the power failure between the first cable assembly A and the second cable assembly B when the first cable assembly A and the second cable assembly B are connected, and the assembly mode is simple and flexible to disassemble and assemble 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 plug portion and a clamping protrusion on an outer circumferential surface of the plug portion, and the second connection portion 30 includes a plug cavity and a clamping groove on an inner circumferential surface of the plug cavity, the first connection portion 23 further includes: an annular groove and a seal.

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

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

When the second connection portion 30 is inserted into the first connection portion 23, the insertion portion 304 is inserted into the insertion cavity 233, the clamping protrusion 305 is clamped in the clamping groove 234, the sealing element 307 is extruded by the annular groove 306 and the inner circumferential surface m of the insertion 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, when the network port 10 is connected to the camera body and the second connection 30 is plugged with the first connection 23, the second connection 30 can receive an electrical signal from the camera body.

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.

Referring 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.

The electrical signal from the camera body can be transmitted to the control chip 52 through the interface circuit 51, and is converted into at least one functional signal by the control chip 52 and output to at least one external device.

In this embodiment, the circuit board 303 includes an interface circuit 51, a control chip 52 and an output circuit 53, 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, thereby enabling the camera cable assembly 100 to achieve various functional requirements, and by arranging the modularized functional circuit on the camera cable assembly 100, the problems of high integration level and narrow practicability of the internal circuit module of the camera are solved, so that the applicability of the camera becomes wider.

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

The second cable assembly B includes an alarm input 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 harness; 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 main body through the interface circuit 51.

It should be noted that, in this embodiment, one end of the alarm input harness is connected to the alarm input circuit 54, and the other end of the alarm input harness may be connected to a detection device. The alarm input circuit 54 receives an alarm signal sent by the detection device through the alarm input tail bundle, and sends a first level signal to the control chip 52 according to the alarm signal, wherein if the alarm signal indicates alarm, the first level signal is a first low level signal; if the alarm signal indicates no alarm, the first level signal is a first high level signal.

Illustratively, 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, and optionally, the alarm signal for indicating an alarm may be a level signal lower than 0.7V, and at this time, 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, and optionally, the alarm signal for indicating an alarm may be a level signal between 3.3V and 12V. The embodiments of the present application do not limit this. At this time, the first level signal output from the alarm input circuit 54 is a high level signal for indicating no alarm.

Thus, an alarm signal of at least one external device (e.g., the detection device) is converted into an alarm input signal through the alarm input circuit 54, the control chip 52 and the interface circuit 51, the alarm input signal is output to the camera body, and the camera body generates a corresponding action or instruction (e.g., focusing, instructing to emit a sound, etc.) according to the alarm input signal, and instructs the camera body to perform the action or instruction (e.g., focusing, instructing to emit a 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 comprises an alarm output harness; the control chip 52 includes an alarm output pin.

With continued reference to fig. 5, the output circuit 53 includes: 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 main body, an alarm instruction is sent to the external device through the alarm output circuit 531.

It should be noted that, in this embodiment, one end of the alarm output harness is connected to the alarm output circuit 531, and the other end of the alarm output harness may be connected to an alarm device. The alarm output signal from the camera body is input to the control chip 52 through the interface circuit 51, and the control chip 52 responds to the alarm output signal and sends an alarm instruction to an alarm device through the alarm output circuit 531.

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 present disclosure.

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, are connected to the input end of the alarm output circuit 531, and are used for sending an alarm instruction to an alarm device through the alarm output circuit 531.

For example, table 1 is a table describing the reference numbers and functions of the pins of the control chip 52. For a description of the functions 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 main body is usually a serial port signal format. The PA2 pin of the control chip 52 is used for sending serial signals to the camera body through the interface circuit 51. The PA3 pin of the control chip 52 is used for receiving serial signals output by the camera body through the interface circuit 51.

Referring to fig. 6, in the circuit diagram of fig. 6, the NRST pin of the control chip 52 can be connected to the interface circuit 51.

The resistor RH48 is used to eliminate spikes.

The capacitor CMS134 is used to filter the signal from the interface circuit 51 to reduce the noise of the signal.

Referring to fig. 6, in the circuit diagram shown in fig. 6, R7673 is a pull-up resistor, which can prevent the level of the serial port signal from being unstable during transmission.

The capacitor CMS106, the capacitor CMS133, the capacitor RMS92, and the capacitor RMS411 form a serial RC circuit, which can effectively prevent EMI (Electromagnetic Interference) problem.

It should be noted that the primary RC circuit is composed of a resistor and a capacitor. The resistor and capacitor are arranged and can be divided into an RC series circuit and an RC parallel circuit; pure RC parallel connection cannot resonate, and LC parallel connection can resonate because the resistor does not store energy. The RC circuit is widely applied to analog circuits and pulse digital circuits, and if the RC parallel circuit is connected in series in the circuit, the RC parallel circuit has the function of attenuating low-frequency signals, and if the RC parallel circuit is connected in parallel in the circuit, the RC parallel circuit has the function of attenuating high-frequency signals, namely the function of filtering.

Referring 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.

Resistor RMS299 is a reserved resistor used for eliminating spike signals. Illustratively, in the absence of a spike, the resistance of resistor RMS299 is 0 Ω; when there is a peak, the peak is eliminated by setting the resistance value of the resistor RMS299 to 1k Ω or 2k Ω.

The capacitor CMS130 is used to filter the signal from the 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.

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

Capacitor CMS129 is used to filter the signal from 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.

Resistor RMS309 is a reserved resistor for eliminating spikes. Illustratively, in the absence of a spike, the resistance of resistor RMS309 is 0 Ω; when there is a spike, the spike is eliminated by setting the resistance value of the resistor RMS309 to 1k Ω or 2k Ω.

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

Referring 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 for 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 structural diagram of an alarm input circuit 54 according to some embodiments of the present disclosure.

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 equipment, 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.

An ALARM signal is input to a diode D21 through an input end ALARM-IN01 of the ALARM input circuit 54, an anode of a diode D21 is pulled up to a 3.3V power supply through a pull-up resistor R103, if the level signal of the ALARM signal is greater than the voltage input by a voltage input end ALARM-IN01 of the ALARM input circuit 54, the diode is not conducted, and a first level signal output by an output end ALRM-IN1 of the ALARM input circuit is a first high level signal; if the level signal of the ALARM signal is less than the voltage input by the voltage input end ALARM-IN01 of the ALARM input circuit 54, the diode is conducted, the first level signal output by the output end ALRM-IN1 of the ALARM input circuit 54 is a first low level signal, and therefore, the ALARM input circuit can output different first level signals by controlling the level signal of the ALARM signal.

The RC circuit includes resistor 100 and capacitor C953, which makes the alarm signal edge more gradual.

Capacitor C951 is connected to ground. The capacitor C951 is used for suppressing a false glitch signal.

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

As shown in fig. 8, the alarm output circuit 531 includes: triode 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 turned on or off according to the level signal to control whether the alarm device acts or not.

In the circuit diagram of fig. 8, the control chip 52 is connected to the base of the transistor Q3 via a pin PB 6. The surge suppression circuit includes surge protection device TVAM 2.

The resistor R57 is used to avoid the control chip 52 being directly connected to ground.

Resistor R58 is the current limiting resistor of transistor Q3.

Resistor R59 may function as a voltage divider for providing an initial level signal to the base 1 of transistor Q3. In some examples, the resistance of the resistor R59 may be 4.7k Ω.

The capacitor C74 is used for filtering the abnormal burr signal.

In some embodiments, when the network port 10 is connected to the camera body and the second connection portion 30 is plugged with the first connection portion 23, the second connection portion 30 can receive a first power supply signal from the camera body.

With continued reference to fig. 5, the circuit board 303 further includes: a buck-boost circuit 55.

The buck-boost circuit 55 is connected to the interface circuit 51.

The buck-boost circuit 55 is configured to: converting a first power supply signal from the camera body into a second power supply signal, and transmitting the second power supply 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 structural diagram of a buck-boost circuit 55 according to some embodiments of the present disclosure. The buck-boost circuit 55 is a 12V power supply return circuit. In the 12V power supply return circuit, the 5V power supply is boosted to 12V by the boosting power supply chip U99, and returned to the output circuit 53, thereby outputting the 12V power supply.

A pin 1 of the boosting power supply chip U99 is connected with the output end of the 12V power supply return circuit; a2 pin of the boosting power supply chip U99 is used for grounding; the 3 pins of the boosting power supply chip U99 are used for monitoring the output voltage in real time; 4 pins of the boosting power supply chip U99 are used for supplying power to the inside of the boosting power supply chip U99; the 5 pin of the boosting power supply chip U99 plays a role in overcurrent protection; pin 6 of the boost power chip U99 is used to input a 5V supply voltage.

The capacitor C952, the capacitor CP97 and the capacitor C60188 are used for ensuring the 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 performing overcurrent protection on the boosting power supply chip U99.

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

The resistor R121 and the resistor R397 mainly perform a voltage division function.

The resistor R11 and the inductor capacitor C19 form an RC series circuit, which can effectively prevent EMI (Electromagnetic Interference) problem.

The capacitor CN185 is used for stabilizing the voltage fed back.

The capacitor C60189, the capacitor C60274, the capacitor C60275, the capacitor C116, the capacitor C117, the capacitor C118, the capacitor CV367, and the capacitor CV368 are used to stabilize the output current.

Surge protection device TVSOP1 is used to prevent surge from damaging other devices in the loop.

The fuse F5 is used for timely fusing when the short circuit occurs in the equipment, thereby playing a role in protecting the safety of the equipment.

In some embodiments, when the network port 10 is connected to the camera body and the second connection portion 30 is plugged to 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: the signal conversion circuit 532.

The signal conversion circuit 532 is connected with 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 capacity of the second communication signal is greater 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 structural diagram of a signal conversion circuit 532 according to some embodiments of the present disclosure. The signal conversion circuit 532 is a 485 transceiver circuit. The 485 transceiver circuit can convert the 485 signal (i.e., the first communication signal) into a 485 differential signal (i.e., the second communication signal) that can be transmitted over a long distance.

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 ends RS485-Rx are connected with a 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 by the chip U46 and output to the output circuit 53.

Wherein, pin 1 of the chip U46 is connected to pin PA10 of the control chip 52. The 2 pin of the chip U46 and the 3 pin of the chip U46 are connected with the pin PA9 of the control chip 52. The 4 pins of the chip U46 are connected to the pins PA8 of the control chip 52. The 5 pins of the chip U46, the 6 pins of the chip U46 and the 7 pins of the chip U46 are connected with 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; 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 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 line 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 from flowing back.

Resistor RS275 is the default pull-down resistor.

The resistor R722 is a pull-down resistor.

The inductor C954 and the inductor 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 surge, and damage to other devices in the loop caused by surge is avoided.

It should be noted 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 can convert the 485 signal (i.e., the 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 input end RS485-CTRL of the signal conversion circuit 532, the communication signal of the 485 transceiver circuit is output by default. That is, the 485 transceiver circuit can convert the 485 signal (i.e., the first communication signal) into a 485 differential signal and output the 485 differential signal to an external device.

In some embodiments, with continued reference 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 fluctuation and electrostatic interference of the first communication signal sent by the control chip 52.

In some examples, the protection circuit 56 utilizes a TVS (Transient voltage suppression diode) to protect signals from esd (static-capacitive) while adding an RC (resistance-Capacitance compensation) circuit to protect the module from EMI (Electromagnetic Interference) problems.

It will be understood by those skilled in the art that a TVS diode, which is a protective electronic component, can protect electrical equipment from voltage spikes induced by wires.

The miniaturized TVS diode packaged by the SOD123 makes the volume of the protection circuit 56 greatly reduced when protecting from electrostatic interference. And the TVS diode packaged by the other part of SMB is designed to have the surge resistance up to 100A (10/1000 mu S) while the volume miniaturization is considered.

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

The circuit board 303 further includes: and a filtering and tuning circuit 57.

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

The filtering and tuning circuit 57 is configured to: the first power signal from the interface circuit 51 is filtered to reduce the noise of the first power signal.

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

Referring to fig. 11, fig. 11 is a schematic structural diagram of a filtering and tuning circuit 57 according to some embodiments of the present disclosure.

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

The filtering and tuning circuit 57 connects a plurality of filtering capacitors CA462, CA461, and CA463 with different capacitance values in parallel with the ground at the same time, so that the power supply filters the high-frequency power supply noise after conversion.

Wherein, filter capacitor CA462 is a 1nF capacitor, filter capacitor CA461 is a 100nF capacitor, and filter capacitor CA463 is a10 uF capacitor.

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

Resistor RA25 is used to make the current and voltage contributions at the input and output terminals relatively small.

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

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 present application provides an image capture device 1000 comprising a camera 200 and the camera cable assembly 100 described above. 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 can be connected with the camera main body, the first connecting part 23 contained at the other end of the first cable assembly A can be connected with one end 3 of the second cable assembly B, and the other end 4 of the second cable assembly B is connected with at least one external device, so that the camera cable assembly 100 is used for realizing the electric connection between the camera and the at least one external device; common functional interfaces (such as a power interface 21 and a network cable interface 22) and other functional interfaces (such as an audio interface 41, a video interface 42, an alarm interface 43 and a communication interface 44) are separately arranged, 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 problems of high integration of the circuit module inside the camera and narrow practicability can be solved, and the applicability of the camera becomes wider.

While the present application has been described 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 review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "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 present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

The above is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall 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 supply interface, a network cable interface and a first connecting part;

a second cable assembly having a second connection part at one end thereof, the second connection part being detachably inserted into the first connection 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 connecting part is plugged with the first connecting part, the camera body can be electrically connected with at least one external device through the second cable assembly.

2. The camera cable assembly of claim 1,

the first connection portion includes a first electrical connector;

the second connection portion 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;

the network port is connected with the camera body, when the second connecting portion is connected with the first connecting portion in an inserting mode, the first electric connector is electrically connected with the second electric connector, the circuit board can convert received electric signals into at least one type of functional signals, and outputs the converted at least one type of functional signals to at least one external device, wherein the functional signals comprise at least one of alarm output signals and differential signals.

3. The camera cable assembly of claim 2,

one of the first connection portion and the second connection portion includes: the clamping groove is positioned on the inner peripheral surface of the insertion cavity;

the other of the first connection portion and the second connection portion includes: the clamping protrusion is positioned on the peripheral surface of the insertion part;

when the second connecting part is connected with the first connecting part in an inserting mode, the inserting part is inserted into the inserting cavity, and the clamping protrusion is clamped in the clamping groove.

4. The camera cable assembly of claim 3, wherein the other of the first and second connection portions further comprises:

the annular groove is positioned on the outer peripheral surface of the plug part, corresponds to the clamping protrusion and is far away from the other end of the second cable assembly;

and the sealing element is arranged on the annular groove.

5. The camera cable assembly of claim 1, wherein the second connector is capable of receiving electrical signals from the camera body when the network port is connected with the camera body and the second connector is plugged with the first connector;

the second connection portion includes a circuit board; the circuit board includes: the device comprises an interface circuit, a control chip and an output circuit;

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

6. The camera cable assembly of claim 5,

when the network port is connected with the camera main body and the second connecting part is plugged 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 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 harness; the alarm input circuit is configured to receive an alarm signal from the alarm input tail and transmit the alarm signal to the control chip;

the control chip is also configured to respond to an alarm signal from the alarm input circuit, convert the received alarm signal into an alarm input signal, and output the converted alarm input signal to the camera main 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 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 bundle;

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

7. The camera cable assembly of claim 5, wherein the second connector 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 connector is plugged into the first connector;

the circuit board further includes:

the voltage-boosting 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.

8. The camera cable assembly of claim 5, 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: responding to the electric signal received by the interface circuit, and converting the received electric signal into a first communication signal;

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-jamming capability of the second communication signal is greater than that of the first communication signal; and/or the presence of a gas in the gas,

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 the first communication signal sent by the control chip.

9. The camera cable assembly of claim 5, wherein the second connector 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 connector is plugged into the first connector;

the control chip also comprises an analog voltage pin;

the circuit board further includes:

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

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

10. An image pickup apparatus, comprising:

the camera body is provided with a tail wire interface; and the number of the first and second groups,

the camera cable assembly of any one of claims 1 to 9, a network port of the camera cable assembly interfacing with a tail of the camera body.