CN111295003B - Flashing lamp and flashing system - Google Patents
Flashing lamp and flashing system Download PDFInfo
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- CN111295003B CN111295003B CN201811393938.9A CN201811393938A CN111295003B CN 111295003 B CN111295003 B CN 111295003B CN 201811393938 A CN201811393938 A CN 201811393938A CN 111295003 B CN111295003 B CN 111295003B
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Abstract
The invention relates to the technical field of light compensation, and provides a flashing lamp and a flashing system, wherein the flashing lamp comprises a first power supply module, a first trigger module, a controller, a voltage conversion module, a second trigger module and a flashing lamp tube; the voltage conversion module is used for converting the commercial power to obtain a voltage signal and sending the voltage signal to the controller; the first trigger module is used for receiving a trigger signal sent by the camera and transmitting the trigger signal to the controller; the controller is used for calculating a voltage value according to the voltage signal, comparing the voltage value with a preset voltage range when receiving the trigger signal, and sending a control signal to the second trigger module when the voltage value is within the preset voltage range so that the second trigger module triggers the explosion flash lamp tube to enable the explosion flash lamp tube to emit light under the power supply of the first power supply module. Compared with the prior art, the flash explosion lamp and the flash explosion system provided by the invention solve the problem of poor light supplement effect in light supplement shooting.
Description
Technical Field
The invention relates to the technical field of light compensation, in particular to a flashing light and a flashing system.
Background
Like the camera needs to synchronously turn on the flash lamp for light supplement when shooting in a dark external environment, the bayonet camera also needs external light supplement shooting in the dark night or in the backlight condition.
The LED light supplement lamp is one of the existing light supplement modes, is a normally-on lamp, drives the semiconductor device to emit light by virtue of low current, can improve the brightness of the whole environment, and has the advantages of high stability, low heat productivity, low energy consumption and long service life. However, when the bayonet camera is used on a road, a license plate moving at a high speed and a scene in a vehicle are required to be captured, a high-intensity light supplement effect is required at night and under a backlight condition, however, because the power consumption of the LED is low, the luminance is relatively low, the luminance of a vehicle window part is low, the situation in the vehicle is blurred, and the requirement of capturing is difficult to achieve by using the LED lamp as a light supplement method.
Disclosure of Invention
The invention aims to provide a flash lamp and a flash system to solve the problem that the light supplementing effect is poor in light supplementing shooting in the prior art.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:
the invention provides a flashing lamp which is electrically connected with a camera, and comprises a first power supply module, a first trigger module, a controller, a voltage conversion module, a second trigger module and a flashing lamp tube, wherein the voltage conversion module and the first trigger module are electrically connected with the controller; the voltage conversion module is used for converting the commercial power to obtain a voltage signal and sending the voltage signal to the controller; the first trigger module is used for receiving a trigger signal sent by the camera and transmitting the trigger signal to the controller; the controller is used for calculating a voltage value according to the voltage signal, comparing the voltage value with a preset voltage range when receiving the trigger signal, and sending a control signal to the second trigger module when the voltage value is within the preset voltage range so that the second trigger module triggers the flash tube to enable the flash tube to emit light under the power supply of the first power supply module.
Further, the preset voltage range includes a plurality of preset voltage intervals, and each preset voltage interval corresponds to one pulse information; the controller is further configured to determine a target voltage interval from a plurality of preset voltage intervals according to the voltage value, and send a control signal to the second trigger module according to pulse information corresponding to the target voltage interval.
Further, the flashing light also comprises a second power supply module, the second power supply module is electrically connected with the mains supply, and the second power supply module is electrically connected with the controller; the second power supply module is used for supplying power to the controller after the commercial power is converted.
Further, the second power module comprises an isolation voltage reduction circuit, a rectification filter circuit and a direct current voltage reduction circuit, the isolation voltage reduction circuit, the rectification filter circuit and the direct current voltage reduction circuit are sequentially and electrically connected, the isolation voltage reduction circuit is electrically connected with the mains supply, and the direct current voltage reduction circuit is electrically connected with the controller.
Further, the isolation step-down circuit comprises a transformer, the rectification filter circuit comprises a rectification bridge and a filter capacitor, the direct-current step-down circuit comprises a voltage stabilizer, the transformer is electrically connected with the mains supply, and the transformer, the rectification bridge, the filter capacitor, the voltage stabilizer and the controller are sequentially electrically connected.
Further, the voltage conversion module comprises an isolation voltage reduction circuit, a rectification filter circuit and a voltage division circuit, wherein the isolation voltage reduction circuit, the rectification filter circuit and the voltage division circuit are sequentially and electrically connected, the isolation voltage reduction circuit is electrically connected with the mains supply, and the voltage division circuit is electrically connected with the controller.
Further, the isolation step-down circuit comprises a transformer, the rectification filter circuit comprises a rectification bridge and a filter capacitor, the voltage division circuit comprises a first resistor and a second resistor, the transformer is electrically connected with the mains supply, the transformer, the rectification bridge and the filter capacitor are sequentially and electrically connected, one end of the first resistor is electrically connected to the filter capacitor, the other end of the first resistor is electrically connected to the ground through the second resistor, and the other end of the first resistor is electrically connected with the controller.
Further, the first power supply module comprises a voltage-multiplying rectifying circuit and an energy storage circuit, the voltage-multiplying rectifying circuit is electrically connected with the commercial power, and the energy storage circuit is electrically connected with the flash tube; the voltage doubling rectifying circuit is used for doubling and rectifying the mains supply and transmitting the mains supply to the energy storage circuit; the energy storage circuit is used for storing the electric energy transmitted by the voltage doubling rectifying circuit and supplying power to the flash tube.
Further, the second trigger module is electrically connected with the voltage-multiplying rectification circuit, the second trigger module comprises an isolation circuit, a first trigger and a second trigger, the first trigger and the second trigger are both electrically connected with the isolation circuit, the isolation circuit is electrically connected with the controller, the first trigger and the second trigger are both electrically connected with the flash tube, and the voltage-multiplying rectification circuit is electrically connected with the first trigger; the isolation circuit is used for transmitting the control signal sent by the controller to the first trigger and the second trigger and isolating the high-voltage signals generated by the first trigger and the second trigger; the first trigger is used for generating a first high-voltage signal according to the control signal and the electric energy transmitted by the voltage-doubling rectifying circuit so as to excite the flash tube to start to emit light; the second trigger is used for generating a second high-voltage signal according to the control signal so as to enable the explosion flash lamp tube to continuously emit light.
A flash explosion system comprises the flash explosion lamp, the flash explosion lamp comprises a first power supply module, a first trigger module, a controller, a voltage conversion module, a second trigger module and a flash explosion lamp tube, the voltage conversion module and the first trigger module are electrically connected with the controller, the controller is electrically connected to the flash explosion lamp tube through the second trigger module, the first power supply module is electrically connected with the flash explosion lamp tube, the first trigger module is electrically connected with a camera, and the voltage conversion module and the first power supply module are electrically connected to a mains supply; the voltage conversion module is used for converting the commercial power to obtain a voltage signal and sending the voltage signal to the controller; the first trigger module is used for receiving a trigger signal sent by the camera and transmitting the trigger signal to the controller; the controller is used for calculating a voltage value according to the voltage signal, comparing the voltage value with a preset voltage range when receiving the trigger signal, and sending a control signal to the second trigger module when the voltage value is within the preset voltage range so that the second trigger module triggers the flash tube to enable the flash tube to emit light under the power supply of the first power supply module. The flashing system also comprises a camera, and the flashing lamp is electrically connected with the camera.
Compared with the prior art, the invention has the following beneficial effects: according to the flash lamp and the flash system, when the camera sends the trigger signal, the controller calculates the voltage value according to the voltage signal transmitted after the commercial power is converted, and sends the control signal according to the voltage value to control the flash lamp tube to emit light. Only when the camera sends a trigger signal, the flash tube is possible to be lightened to emit high-intensity light so as to carry out shooting light supplement, and the light supplement effect is better due to large energy light supplement in a short time.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 shows a block diagram of a flash explosion system according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a first block of a flashing light provided by an embodiment of the invention.
Fig. 3 shows a second block schematic diagram of a strobe light provided by an embodiment of the invention.
Fig. 4 shows a circuit diagram of a second power module provided by an embodiment of the invention.
Fig. 5 shows a circuit diagram of a voltage conversion module provided by an embodiment of the invention.
Icon: 10-a flash system; 100-flashing lights; 110-a first trigger module; 120-a first power module; 121-voltage doubler rectifier circuit; 122-a tank circuit; 130-a second power supply module; 131-an isolated step-down circuit; 132-a rectifying and filtering circuit; 1321-a rectifier bridge; 1322-a filter capacitor; 133-a dc voltage reduction circuit; 140-a voltage conversion module; 141-a voltage divider circuit; 150-a controller; 160-a second trigger module; 161-isolation circuitry; 162-a first flip-flop; 163-a second flip-flop; 170-flash lamp tube explosion; 200-a camera; 300-mains supply; d1 — first diode; d2 — second diode; d3 — third diode; d4 — fourth diode; t1-transformer; ts-regulator; r1 — first resistance; r2-second resistance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
The light supplement of the flashing light 100 is a light supplement mode when a vehicle passes through a shooting area of the camera 200, and the working principle of the flashing light 100 is that the camera 200 always shoots the shooting area, and when a target detection algorithm in the camera 200 detects that the vehicle drives into the shooting area, a trigger signal is generated and sent to the flashing light 100, so that the flashing light 100 emits light to the camera 200 for supplementing light. When the camera 200 performs a snapshot action, the trigger signal is sent to the controller 150, the controller 150 generates a control signal to enable the secondary high-voltage trigger coil on the flash lamp tube 170 to generate a high voltage of nearly ten thousand volts, so as to excite xenon gas in the flash lamp 100 to ionize, and then the switch connected in series with the flash lamp tubes 170 is turned on, so that the voltages at the two ends of the capacitor are applied to the two ends of the flash lamp tube 170, and the electric energy stored in the capacitor is discharged through the flash lamp tube 170 instantaneously and converted into light energy, thereby completing a flash light supplement action. Because the inert gas such as xenon is arranged in the flashing light 100, when the inert gas is punctured, high-intensity light can be emitted in a short time, the interior of a vehicle window can be clearly illuminated at night and under the condition of backlight, and the light supplementing requirement of the high-definition bayonet camera 200 is met.
It should be noted that, in the embodiment of the present invention, when the camera 200 detects that a vehicle enters the shooting area through the target detection algorithm, generating a trigger signal and sending the trigger signal to the strobe 100 is only a way of generating the trigger signal, in other embodiments of the present invention, a coil detection or a radar detection may also be used to generate a snapshot signal and send the snapshot signal to the camera 200, so as to trigger a snapshot action of the camera 200, and the camera 200 synchronously generates the trigger signal and sends the trigger signal to the strobe 100, which is not limited herein.
Usually, the commercial power 300 is stored in the energy storage circuit 122 after passing through the voltage doubling rectifying circuit 121, each time the flash tube 170 is flashed, energy is released by the energy storage capacitor in the energy storage circuit 122, and in practical engineering, due to various factors such as line loss, the voltage of each energy storage capacitor in the energy storage circuit 122 is too large or too small, if the electric energy in the energy storage capacitor is too large, the released energy is large when the flash tube is flashed, the image shot by the camera 200 is too explosive, if the electric energy of the energy storage capacitor is too small, the exposure brightness is insufficient, the light supplement effect is poor, outside the suitable working range of the flash tube 170, no matter the voltage of the energy storage capacitor is too small or too large, the service life of the flash tube 170 is shortened.
In order to control the proper exposure brightness and ensure the service life of the flash lamp 170, the embodiment of the invention provides a technical solution, which is characterized in that the commercial power 300 is converted to obtain a voltage signal, the controller 150 calculates a voltage value according to the voltage signal, and sends a control signal according to the voltage value to control the flash lamp 170 to emit light.
The technical solution of the present application will be described below with reference to specific examples.
First embodiment
Referring to fig. 1, an embodiment of the present invention provides a flash explosion system 10, where the flash explosion system 10 includes a flash explosion lamp 100 and a camera 200, the flash explosion lamp 100 is electrically connected to the camera 200, and the flash explosion lamp 100 is further electrically connected to a commercial power 300.
Referring to fig. 2, the flashing light 100 includes a first triggering module 110, a first power module 120, a second power module 130, a voltage converting module 140, a controller 150, a second triggering module 160 and a flashing light tube 170. The first trigger module 110, the second power module 130, the voltage conversion module 140, and the second trigger module 160 are electrically connected to the controller 150, the second trigger module 160 is electrically connected to the flash lamp 170, the first power module 120 is electrically connected to the flash lamp 170 and the second trigger module 160, the first trigger module 110 is electrically connected to the camera 200, and the first power module 120, the second power module 130, and the voltage conversion module 140 are electrically connected to the commercial power 300.
The first trigger module 110 is electrically connected to both the camera 200 and the controller 150, and is configured to receive a trigger signal sent by the camera 200 and transmit the trigger signal to the controller 150. The camera 200 may be, but is not limited to, a ccd (charge Coupled device) camera or a CMOS (Complementary metal-Oxide Semiconductor) camera. The camera 200 includes a target initial positioning module therein for initially determining a position of a target, and when detecting that a vehicle enters a shooting area, generating a trigger signal and sending the trigger signal to the controller 150 through the first trigger module 110 of the flashing light 100 to supplement light when the camera 200 performs a snapshot operation. For example, when a vehicle enters the monitored area, the object initial positioning module detects that the vehicle enters, generates a trigger signal to be sent and sent to the controller 150 through the first trigger module 110 of the flashing light 100 to supplement light when the camera 200 performs a capturing action. The first trigger module 110 may be an optical coupling isolation circuit or a triode.
Referring to fig. 3, the first power module 120 is electrically connected to the commercial power 300, and is electrically connected to both the flash lamp 170 and the second trigger module 160 for providing power supply to the flash lamp 170 and the second trigger module 160. The first power module 120 includes a voltage doubling rectifying circuit 121 and an energy storage circuit 122, the voltage doubling rectifying circuit 121 is electrically connected to the commercial power 300, and is electrically connected to both the second trigger module 160 and the energy storage circuit 122, and the energy storage circuit 122 is electrically connected to the flash tube 170.
The voltage doubling rectifying circuit 121 is used for doubling and rectifying the voltage of the commercial power 300 and then transmitting the voltage to the energy storage circuit 122 and the second trigger module 160. The voltage doubler rectifier circuit 121 can convert the commercial power 300 into a high dc voltage, and the voltage doubler rectifier circuit 121 can be divided into a voltage doubler rectifier circuit (output voltage/input voltage: 2), a voltage tripler rectifier circuit (output voltage/input voltage: 3), and a voltage doubler rectifier circuit (output voltage/input voltage: n) according to the ratio of the output voltage to the input voltage. Alternatively, voltage doubler rectification circuit 121 may be, but is not limited to, a voltage doubler rectification circuit, a voltage tripler rectification circuit, or a voltage multipler rectification circuit.
The energy storage circuit 122 is used for storing the electric energy transmitted by the voltage doubling rectifying circuit 121 and supplying power to the flash tube 170. The energy storage circuit 122 may be at least one electrolytic capacitor, and the dc voltage transmitted from the voltage doubling rectifying circuit 121 charges the at least one electrolytic capacitor, and when the inert gas in the flash tube 170 breaks down, the electrolytic capacitor provides power for the flash tube 170 to make the flash tube 170 emit light.
The second power module 130 is electrically connected to the commercial power 300 and electrically connected to the controller 150, and is used for converting the commercial power 300 and then supplying power to the controller 150. The second power module 130 includes an isolation step-down circuit 131, a rectifying and filtering circuit 132, and a dc step-down circuit 133. The isolation voltage-reducing circuit 131, the rectifying and filtering circuit 132 and the dc voltage-reducing circuit 133 are electrically connected in sequence, the isolation voltage-reducing circuit 131 is electrically connected with the commercial power 300, and the dc voltage-reducing circuit 133 is electrically connected with the controller 150.
The isolation step-down circuit 131 is electrically connected to the utility power 300 and electrically connected to the rectifying and filtering circuit 132, and is configured to step down the utility power 300 and transmit the stepped-down voltage to the rectifying and filtering circuit 132. The isolated step-down circuit 131 may be, but is not limited to, a transformer T1.
The rectifying and filtering circuit 132 is electrically connected to the isolated step-down circuit 131 and the dc step-down circuit 133, and is configured to rectify and filter the commercial power 300 stepped down by the isolated step-down circuit 131 to obtain a stable dc voltage and transmit the stable dc voltage to the dc step-down circuit 133. The rectifying and filtering circuit 132 may include a rectifying bridge 1321 and a filtering capacitor 1322, the rectifying bridge 1321 is electrically connected to the isolated voltage dropping circuit 131, and the filtering capacitor 1322 is electrically connected to the dc voltage dropping circuit 133.
The dc voltage dropping circuit 133 is electrically connected to the rectifying and filtering circuit 132 and the controller 150, and is configured to perform voltage dropping processing on the stable dc voltage transmitted by the rectifying and filtering circuit 132 to supply power to the controller 150. The dc voltage dropping circuit 133 may be, but is not limited to, a voltage regulator, and specifically, may be a voltage regulator chip of model LM 7805.
As an embodiment, referring to fig. 4, the isolation voltage-reducing circuit 131 includes a transformer T1, the rectification filter circuit 132 includes a rectifier bridge 1321 and a filter capacitor 1322, the dc voltage-reducing circuit 133 includes a voltage regulator Ts, the transformer T1 is electrically connected to the utility power 300, and the transformer T1, the rectifier bridge 1321, the filter capacitor 1322, the voltage regulator Ts and the controller 150 are electrically connected in sequence. The transformer T1 includes a first input terminal, a second input terminal, a first output terminal and a second output terminal, the first input terminal of the transformer T1 is electrically connected to the live line (L) of the commercial power 300, the second input terminal is electrically connected to the neutral line (N) of the commercial power 300, the rectifier bridge 1321 includes a first diode D1, a second diode D2, a third diode D3 and a fourth diode D4, the first output terminal of the transformer T1 is electrically connected to both the cathode of the first diode D1 and the cathode of the third diode D3, the second output terminal of the transformer T1 is electrically connected to both the anode of the second diode D2 and the anode of the fourth diode D4, the cathode of the second diode D2 is electrically connected to the anode of the first diode D1, and the cathode of the fourth diode D4 is electrically connected to the ground and the anode of the third diode D3. The first end of the filter capacitor 1322 is electrically connected to the cathode of the second diode D2 and the anode of the first diode D1, and the second end of the filter capacitor 1322 is electrically connected to ground. The voltage stabilizer Ts includes a third input terminal, a fourth input terminal, a third output terminal and a fourth output terminal, the third input terminal of the voltage stabilizer Ts is electrically connected to the first terminal of the filter capacitor 1322, the fourth input terminal of the voltage stabilizer Ts is electrically connected to the second terminal of the filter capacitor 1322, the third output terminal of the voltage stabilizer Ts is electrically connected to the controller 150, and the fourth output terminal of the voltage stabilizer Ts is electrically connected to ground.
The voltage conversion module 140 is electrically connected to the utility power 300 and electrically connected to the controller 150, and is configured to convert the utility power 300 to obtain a voltage signal and send the voltage signal to the controller 150. The voltage conversion module 140 includes an isolation voltage-reducing circuit 131, a rectifying and filtering circuit 132, and a voltage-dividing circuit 141, wherein the isolation voltage-reducing circuit 131, the rectifying and filtering circuit 132, and the voltage-dividing circuit 141 are electrically connected in sequence, the isolation voltage-reducing circuit 131 is electrically connected to the utility power 300, and the voltage-dividing circuit 141 is electrically connected to the controller 150.
It should be noted that, since the first power module 120 and the voltage conversion module 140 both include the isolation voltage-dropping circuit 131 and the rectification filter circuit 132, and the isolation voltage-dropping circuit 131 is electrically connected to the utility power 300, the isolation voltage-dropping circuit 131 and the rectification filter circuit 132 in the first power module 120 and the isolation voltage-dropping circuit 131 and the rectification filter circuit 132 in the voltage conversion module 140 can be shared, and certainly, they can be separately provided.
The isolation step-down circuit 131 is electrically connected to the utility power 300 and electrically connected to the rectifying and filtering circuit 132, and is configured to step down the utility power 300 and transmit the stepped-down voltage to the rectifying and filtering circuit 132. The isolated step-down circuit 131 may be, but is not limited to, a transformer T1.
The rectifying and filtering circuit 132 is electrically connected to the isolation step-down circuit 131 and the dc step-down circuit 133, and is configured to rectify and filter the commercial power 300 stepped down by the isolation step-down circuit 131 to obtain a stable dc voltage and transmit the stable dc voltage to the voltage dividing circuit 141. The rectifying and filtering circuit 132 may include a rectifying bridge 1321 and a filtering capacitor 1322, the rectifying bridge 1321 is electrically connected to the isolated voltage dropping circuit 131, and the filtering capacitor 1322 is electrically connected to the voltage dividing circuit 141.
Referring to fig. 5, the voltage dividing circuit 141 is electrically connected to the rectifying and filtering circuit 132 and the controller 150, and is configured to divide the stable dc voltage transmitted by the rectifying and filtering circuit 132 to obtain a voltage signal and transmit the voltage signal to the controller 150. The voltage dividing circuit 141 may include a first resistor R1 and a second resistor R2, the first resistor R1 is electrically connected to the second resistor R2, one end of the first resistor R1 is electrically connected to the filter capacitor 1322, the other end of the first resistor R1 is electrically connected to the ground through the second resistor R2, and the other end of the first resistor R1 is electrically connected to the controller 150. Specifically, the voltage dividing circuit 141 is electrically connected to an ADC analog-to-digital conversion module integrated inside the controller 150, so that the controller 150 performs voltage acquisition on the voltage dividing circuit 141.
As an embodiment, the isolation step-down circuit 131 includes a transformer T1, the rectification filter circuit 132 includes a rectification bridge 1321 and a filter capacitor 1322, the voltage divider circuit 141 includes a first resistor R1 and a second resistor R2, the transformer T1 is electrically connected to the utility power 300, and the transformer T1, the rectification bridge 1321, the filter capacitor 1322, the voltage divider circuit 141 and the controller 150 are electrically connected in sequence. The transformer T1 includes a first input terminal, a second input terminal, a first output terminal and a second output terminal, the first input terminal of the transformer T1 is electrically connected to the live line (L) of the commercial power 300, the second input terminal is electrically connected to the neutral line (N) of the commercial power 300, the rectifier bridge 1321 includes a first diode D1, a second diode D2, a third diode D3 and a fourth diode D4, the first output terminal of the transformer T1 is electrically connected to both the cathode of the first diode D1 and the cathode of the third diode D3, the second output terminal of the transformer T1 is electrically connected to both the anode of the second diode D2 and the anode of the fourth diode D4, the cathode of the second diode D2 is electrically connected to the anode of the first diode D1, and the cathode of the fourth diode D4 is electrically connected to the ground and the anode of the third diode D3. The first end of the filter capacitor 1322 is electrically connected to the cathode of the second diode D2 and the anode of the first diode D1, and the second end of the filter capacitor 1322 is electrically connected to ground. The voltage dividing circuit 141 includes a first resistor R1 and a second resistor R2, one end of the first resistor R1 is electrically connected to the first end of the filter capacitor 1322, the other end of the first resistor R1 is electrically connected to ground through the second resistor R2, and the other end of the first resistor R1 is electrically connected to the controller 150.
The controller 150 is electrically connected to the first trigger module 110, the second power module 130, the voltage conversion module 140, and the second trigger module 160, and configured to calculate a voltage value according to the voltage signal sent by the voltage conversion module 140, compare the voltage value with a preset voltage range when receiving the trigger signal, and send a control signal to the second trigger module 160 when the voltage value is within the preset voltage range, so that the second trigger module 160 triggers the flash lamp 170 to make the flash lamp 170 emit light under the power supply of the first power module 120.
As an embodiment, the controller 150 may be an integrated circuit chip having signal Processing capability, and the controller 150 may be a general-purpose Processor including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a digital signal processor, an application specific integrated circuit, a field programmable gate array, a programmable logic controller or other programmable logic device, discrete gate or transistor logic, discrete hardware components.
The controller 150 calculates a voltage value according to the voltage signal sent by the voltage conversion module 140, which may be understood as calculating the voltage value of the utility power 300 according to a specific module circuit, or acquiring the voltage value of the voltage signal. Specifically, when calculating the voltage value of the utility power 300, the voltage value may be calculated according to the formula Uac ═ N1/N2(((R1+ R2)/R2 × (Udc +2 × V)d) /1.414) to calculate the voltage value of the utility power 300, wherein N1/N2 is the turns ratio of the transformer T1, R1 and R2 are the resistances of the first resistor R1 and the second resistor R2 in the voltage dividing circuit 141, respectively, and V is the voltage value of the utility powerdIs the voltage drop, U, of each diode in the rectifier bridge 1321acIs a voltage value, UdcIs a voltage signal.
When the controller 150 receives the trigger signal sent by the first trigger module 110, the calculated voltage value of the utility power 300 or the obtained voltage value of the voltage signal is compared with a preset voltage range. When the voltage value is the voltage value of the commercial power 300, the preset voltage range may be a voltage range customized by a user for maintaining the safe operation of the flash lamp 170, for example, the preset voltage range may be 176V to 265V; when the voltage value is the voltage value of the voltage information, the preset voltage range may be a fluctuation voltage range of the voltage signal corresponding to the safe operation of the flash lamp 170 maintained by the user.
When the voltage value is within the preset voltage range, a control signal is generated and sent to the second trigger module 160 to make the flash lamp 170 emit light; when the voltage value is out of the preset voltage range, no control signal is generated, so that the explosion flash lamp 170 cannot emit light. By comparing with the preset voltage range, the working of the flash lamp tube 170 is prevented when the commercial power 300 is too high or too low, so that the flash lamp tube 170 is protected, and the service life of the flash lamp tube 170 is prolonged.
As an embodiment, the preset voltage range includes a plurality of preset voltage intervals, each preset voltage interval corresponds to one pulse information, and the controller 150 is further configured to determine a target voltage interval from the plurality of preset voltage intervals according to the voltage value, and send a control signal to the second triggering module 160 according to the pulse information corresponding to the target voltage interval. The pulse information may include pulse width, amplitude, etc.
The following description will be made by taking the voltage value as the voltage value of the commercial power 300, and the preset voltage range includes 4 preset voltage intervals as an example.
The standard pulse width given at the standard voltage value (220V) was set to 300 us. The preset voltage range is [176, 265), and the 4 preset voltage intervals are respectively a first voltage interval [176, 198 ], a second voltage interval [198, 220 ], a third voltage interval [220, 242) and a fourth voltage interval [242, 265). The first voltage interval corresponds to a first pulse width, the second voltage interval corresponds to a second pulse width, the third voltage interval corresponds to a third pulse width, and the fourth voltage interval corresponds to a fourth pulse width. Since the voltage values of the first voltage interval and the second voltage interval are both smaller than the standard voltage value, the voltage at this time needs to be "compensated", and the pulse width needs to be set to be the first pulse width > the second pulse width > the standard pulse width. For example, the first pulse width is 340us and the second pulse width is 320 us. Since the voltage values of the third voltage interval and the fourth voltage interval are both larger than the standard commercial power 300, the voltage at this time needs to be "weakened", and the pulse width needs to be set to fourth pulse width < third pulse width < standard pulse width. For example, the third pulse width is 280us and the fourth pulse width is 260 us. The voltage value is different from the standard voltage value through two mechanisms of 'make-up' and 'weaken' to generate control signals with different pulse widths and send the control signals to the second trigger module 160 to control the lighting time of the explosion flash tube 170, so that the stable brightness of the explosion flash tube 170 is ensured, and the light supplementing effect is better. Further, the more the number of preset voltage intervals set in the preset voltage range is, the more the number of corresponding pulse widths is, and the pulse widths corresponding to each preset voltage interval are set to be different values, so that the change of the pulse widths corresponding to two adjacent preset voltage intervals is very small, and no obvious jump exists.
It should be noted that, because the commercial power 300 has instability, it may fluctuate between two adjacent preset voltage intervals, and then the target voltage interval may be switched between two adjacent preset voltage intervals for many times, and the pulse width corresponding to the target voltage interval may also be switched between two different pulse widths. Based on the situation, a hysteresis interval threshold value is set in each preset voltage interval, and when the target voltage interval is detected to be converted back and forth between two adjacent preset voltage intervals, the hysteresis interval threshold value is used for replacing an edge voltage value shared by the two adjacent preset intervals. For example, the hysteresis interval threshold value set for the first voltage interval is 195V, the first voltage interval [176, 198), the second voltage interval [198, 220), and the edge voltage value shared by the first voltage interval [176, 198) and the second voltage interval [198, 220) is 198. At this time, the commercial power 300 fluctuates back and forth between 197V and 199V, so that the target voltage interval is converted between the first voltage interval and the second voltage interval for multiple times, when it is detected that the target voltage interval is converted back and forth between the first voltage interval and the second voltage interval, 195 is used to replace the common marginal voltage value 198 of the first voltage interval and the second voltage interval, the first voltage interval is [176, 195 ], and the second voltage interval is [195, 220 ], and at this time, even if the commercial power 300 fluctuates back and forth between 197V and 199V, the target voltage interval is not converted back and forth between the first voltage interval and the second voltage interval.
The second triggering module 160 is electrically connected to the controller 150, the first power module 120, and the flash lamp 170, and is configured to receive the control signal sent by the controller 150 and convert the control signal into a high-voltage signal to be transmitted to the flash lamp 170 so as to excite the flash lamp 170 to start emitting light and control the flash lamp 170 to continuously emit light. The second trigger module 160 includes an isolation circuit 161, a first trigger 162 and a second trigger 163, the first trigger 162 and the second trigger 163 are electrically connected to the isolation circuit 161, the isolation circuit 161 is electrically connected to the controller 150, the first trigger 162 and the second trigger 163 are electrically connected to the flash tube 170, and the voltage doubling rectifying circuit 121 is electrically connected to the first trigger 162.
The isolation circuit 161 is configured to transmit a control signal sent by the controller 150 to the first flip-flop 162 and the second flip-flop 163, and isolate the high-voltage signals generated by the first flip-flop 162 and the second flip-flop 163, so as to prevent the high-voltage signals (the first high-voltage signal generated by the first flip-flop 162, and the second high-voltage signal generated by the second flip-flop 163) from being transmitted to the controller 150 and damaging the controller 150. The isolation circuit 161 may be, but is not limited to, an opto-isolator.
The first trigger 162 is used for generating a first high voltage signal according to the control signal and the electric energy transmitted by the voltage-doubling rectifying circuit 121 to trigger the flash lamp 170 to start to emit light. The first high voltage signal may be a ten thousand volt high voltage signal, for example, 1 thousand volts. The inert gas inside the flash tube 170 can be broken through by the first high voltage signal, so that the flash tube 170 starts to emit light. The first trigger 162 may be, but is not limited to, a high voltage MOS transistor or a thyristor.
The second trigger 163 is used for generating a second high voltage signal according to the control signal to make the flash lamp 170 continuously emit light. The second high voltage signal may be a high voltage signal of several hundred volts, for example 620V (220 x 1.414 x 2). The duration of the high voltage signal may be the same as the pulse width of the control signal, so that the duration of the light emission of the flash lamp 170 may be controlled by the second trigger signal. The second flip-flop 163 may be, but is not limited to, an Insulated Gate Bipolar Transistor (IGBT) and a thyristor.
The flash tube 170 is electrically connected to the first trigger 162, the second trigger 163 and the energy storage circuit 122, and is configured to emit light when the first trigger 162 and the second trigger 163 are triggered and the energy storage circuit 122 is powered. The flash tube 170 may be, but is not limited to, a rectangular flash tube, a U-shaped flash tube, a spiral flash tube, etc.
The camera 200 is electrically connected to the first triggering module 110 of the strobe light 100, and is configured to generate a triggering signal and send the triggering signal to the first triggering module 110 when it is detected that a vehicle enters the shooting area. The camera 200 may be, but is not limited to, a ccd (charge Coupled device) camera or a CMOS (Complementary metal-Oxide Semiconductor) camera.
The working principle of the explosion flash lamp 100 provided by the embodiment of the invention is as follows: the voltage conversion module 140 is configured to convert the utility power 300 to obtain a voltage signal and send the voltage signal to the controller 150; the first trigger module 110 is configured to receive a trigger signal sent by the camera 200 and transmit the trigger signal to the controller 150; the controller 150 is configured to calculate a voltage value according to the voltage signal, compare the voltage value with a preset voltage range when receiving the trigger signal, and send a control signal to the first trigger 162 and the second trigger 163 of the second trigger module 160 when the voltage value is within the preset voltage range, where the first trigger 162 is configured to generate a first high voltage signal to excite the flash lamp 170 to emit light, the second trigger 163 is configured to generate a second high voltage signal according to the control signal to make the flash lamp 170 continuously emit light, and the first power supply module is configured to provide power for the flash lamp 170.
In summary, compared with the prior art, the flash explosion lamp and the flash explosion system provided by the invention firstly process the voltage value different from the standard voltage value through two mechanisms of 'make-up' and 'weaken' to generate control signals with different pulse widths and send the control signals to the second trigger module to control the lighting time of the flash explosion lamp tube, so as to ensure stable brightness of the flash explosion lamp tube and better light supplement effect; secondly, by comparing the voltage value with a preset voltage range, the flash lamp tube cannot work when the commercial power is too high or too low, so that the flash lamp tube is protected, and the service life of the flash lamp tube is prolonged; and finally, high-intensity light is emitted in a short time through the flash tube to carry out shooting light supplement, and the light supplement effect is good due to large energy light supplement in a short time.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Claims (10)
1. A flash lamp is characterized in that the flash lamp is electrically connected with a camera, the flash lamp comprises a first power supply module, a first trigger module, a controller, a voltage conversion module, a second trigger module and a flash lamp tube, the voltage conversion module and the first trigger module are both electrically connected with the controller, the controller is electrically connected with the flash lamp tube through the second trigger module, the first power supply module is electrically connected with the flash lamp tube, the first trigger module is electrically connected with the camera, and the voltage conversion module and the first power supply module are both electrically connected with a mains supply;
the voltage conversion module is used for converting the commercial power to obtain a voltage signal and sending the voltage signal to the controller;
the first trigger module is used for receiving a trigger signal sent by the camera and transmitting the trigger signal to the controller;
the controller is used for calculating a voltage value according to the voltage signal, comparing the voltage value with a preset voltage range when receiving the trigger signal, and sending a control signal to the second trigger module when the voltage value is within the preset voltage range so that the second trigger module triggers the flash tube to enable the flash tube to emit light under the power supply of the first power supply module.
2. The strobe light as recited in claim 1, wherein said predetermined voltage range comprises a plurality of predetermined voltage intervals, each of said predetermined voltage intervals corresponding to a pulse information;
the controller is further configured to determine a target voltage interval from a plurality of preset voltage intervals according to the voltage value, and send a control signal to the second trigger module according to pulse information corresponding to the target voltage interval.
3. The strobe light of claim 1 further comprising a second power module, said second power module being electrically connected to said utility power and said second power module being electrically connected to said controller;
the second power supply module is used for supplying power to the controller after the commercial power is converted.
4. The strobe light as claimed in claim 3, wherein said second power supply module comprises an isolation step-down circuit, a rectification filter circuit and a DC step-down circuit, said isolation step-down circuit, said rectification filter circuit and said DC step-down circuit are electrically connected in sequence, said isolation step-down circuit is electrically connected with said commercial power, said DC step-down circuit is electrically connected with said controller.
5. The strobe light as claimed in claim 4 wherein said isolated step-down circuit comprises a transformer, said rectifying and filtering circuit comprises a rectifying bridge and a filtering capacitor, said DC step-down circuit comprises a voltage stabilizer, said transformer is electrically connected to said commercial power, said transformer, rectifying bridge, filtering capacitor, voltage stabilizer and said controller are electrically connected in sequence.
6. The strobe light as claimed in claim 1, wherein said voltage conversion module comprises an isolation step-down circuit, a rectifying and filtering circuit and a voltage dividing circuit, said isolation step-down circuit, rectifying and filtering circuit and said voltage dividing circuit are electrically connected in sequence, said isolation step-down circuit is electrically connected with said commercial power, said voltage dividing circuit is electrically connected with said controller.
7. The strobe light as claimed in claim 6, wherein said isolated step-down circuit comprises a transformer, said rectifying and filtering circuit comprises a rectifying bridge and a filtering capacitor, said voltage dividing circuit comprises a first resistor and a second resistor, said transformer is electrically connected to said commercial power, said transformer, rectifying bridge and said filtering capacitor are electrically connected in turn, one end of said first resistor is electrically connected to said filtering capacitor, the other end of said first resistor is electrically connected to ground through said second resistor, and the other end of said first resistor is electrically connected to said controller.
8. The strobe light of claim 1 wherein the first power module comprises a voltage doubler rectifier circuit and an energy storage circuit, the voltage doubler rectifier circuit being electrically connected to the utility power, the energy storage circuit being electrically connected to the strobe light;
the voltage doubling rectifying circuit is used for doubling and rectifying the mains supply and transmitting the mains supply to the energy storage circuit;
the energy storage circuit is used for storing the electric energy transmitted by the voltage doubling rectifying circuit and supplying power to the flash tube.
9. The strobe light of claim 8 wherein said second trigger module is electrically connected to said voltage doubling rectifier circuit, said second trigger module comprising an isolation circuit, a first trigger and a second trigger, said first trigger and said second trigger each being electrically connected to said isolation circuit, said isolation circuit being electrically connected to said controller, said first trigger and said second trigger each being electrically connected to said strobe light, and said voltage doubling rectifier circuit being electrically connected to said first trigger;
the isolation circuit is used for transmitting the control signal sent by the controller to the first trigger and the second trigger and isolating the high-voltage signals generated by the first trigger and the second trigger;
the first trigger is used for generating a first high-voltage signal according to the control signal and the electric energy transmitted by the voltage-doubling rectifying circuit so as to excite the flash tube to start to emit light;
the second trigger is used for generating a second high-voltage signal according to the control signal so as to enable the explosion flash lamp tube to continuously emit light.
10. A flashing system, characterized in that the flashing system comprises the flashing light of any one of claims 1-9, and the flashing system further comprises a camera, and the flashing light is electrically connected with the camera.
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| CN201811393938.9A CN111295003B (en) | 2018-11-21 | 2018-11-21 | Flashing lamp and flashing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811393938.9A CN111295003B (en) | 2018-11-21 | 2018-11-21 | Flashing lamp and flashing system |
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| CN111295003A CN111295003A (en) | 2020-06-16 |
| CN111295003B true CN111295003B (en) | 2021-08-31 |
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