Camera control circuit and camera

Abstract

The utility model relates to a camera control circuit and a camera, a lamp is arranged on the camera for illumination, the illumination of the lamp supplements light for the camera or provides an illumination effect, the control circuit integrates an isolation circuit and a non-isolation circuit, the isolation circuit and the non-isolation circuit are in common ground connection, the isolation circuit supplies power to the camera, and the non-isolation circuit supplies power to the camera. The non-isolation circuit supplies power to the lamp, and the logic signal of the camera controls the on-off of the non-isolation circuit, thereby achieving the control of the illumination of the lamp through the logic signal of the camera, achieving the light-emitting illumination of the lamp for the monitoring of the camera or providing an illumination effect, reducing the cost, and enabling the use to be more convenient. A plurality of filter circuits are arranged in the control circuit to filter voltage, so that transmission of electric signals is purer, a transformer in the isolation circuit reduces the voltage of the electric signals to 5V to supply power to the camera, and the non-isolation circuit outputs high-voltage electric signals, so that high-voltage and low-voltage integration is realized, the cost of the control circuit is reduced, and meanwhile, installation is also facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to camera control circuit field, especially a kind of control circuit and camera of camera. BACKGROUND

[0002] With the improvement of people's safety consciousness, the combination equipment of camera and lighting lamp is widely used in family, business and public place. This combination equipment not only can provide lighting function, but also can carry out real-time monitoring, and improve safety. At present, the power supply circuit of the common camera and lamp combination equipment on the market is usually designed separately, that is, the camera and the lamp are powered by independent power module respectively. This design has the following shortcomings, first, the cost is higher: independent power module increases the material cost and manufacturing cost of equipment. Second, installation is complex: the power line of camera and lamp needs to be connected respectively, which increases the installation difficulty and wiring cost. Third, space occupation: independent power module occupies more internal space of equipment, which is not conducive to the miniaturization design of equipment. SUMMARY

[0003] The technical problem to be solved by the utility model is that the power supply of the existing camera and lamp is independent of each other, which has high cost, complex installation, and large space occupation of power module, which is not conducive to the miniaturization of camera. In view of the above defects of prior art, a control circuit and camera of camera are provided.

[0004] In order to solve the above technical problems, the technical scheme adopted by the utility model is:

[0005] A control circuit of camera is constructed, which comprises voltage stabilizing circuit, filter circuit, isolation circuit, and also comprises non-isolation circuit,

[0006] The voltage stabilizing circuit is used for receiving input voltage signal and stabilizing voltage signal;

[0007] The filter circuit is connected with voltage stabilizing circuit and filters the stabilized voltage signal;

[0008] The isolation circuit is connected with filter circuit, and transmits the filtered voltage signal to low-voltage device interface after voltage reduction;

[0009] The non-isolation circuit is connected with non-isolation circuit, and transmits the filtered voltage signal to high-voltage device interface.

[0010] Preferably, the low-voltage device is electrically connected with non-isolation circuit, and the logic signal transmitted by low-voltage device interface drives the on-off of non-isolation circuit, to control the on-off of high-voltage device interface by the filtered voltage signal for power supply.

[0011] Preferably, the non-isolated circuit comprises an isolated control module, and an isolated transformer module connected with the isolated control module, the isolated transformer module step-downs the filtered voltage signal.

[0012] Preferably, the isolated transformer module is further connected with a first rectifier module, the first rectifier module is connected with a first filter module, and the first filter module is connected with the low-voltage device interface.

[0013] Preferably, the first rectifier module is a first diode connected with the isolated transformer module, the first filter module is a seventh resistor and a third electrolytic capacitor connected with the first diode, and the seventh resistor and the third electrolytic capacitor are arranged in parallel.

[0014] Preferably, the non-isolated circuit comprises a non-isolated control module, the low-voltage device is connected with the non-isolated control module, the non-isolated control module is connected with a first voltage stabilizing module, the first voltage stabilizing module is connected with a third filter module, and the third filter module is connected with the high-voltage device interface.

[0015] Preferably, the first voltage stabilizing module is a second diode and a first inductor connected with the non-isolated control module, the third filter module is a fourth resistor and a fourth electrolytic capacitor connected with the first inductor, and the fourth resistor and the fourth electrolytic capacitor are arranged in parallel.

[0016] Preferably, the low-voltage device interface and the non-isolated control module are connected through a fourth filter module, and the isolated control module and the non-isolated control module are connected through a resistor common ground.

[0017] Preferably, the fourth filter module comprises a ninth resistor, an eighth resistor and a second capacitor connected with the ninth resistor, and the eighth resistor and the second capacitor are arranged in parallel.

[0018] A camera is constructed, comprising a camera and a lamp arranged on the camera, a control board is arranged in the camera, the control board is connected with the camera and the lamp, the control board contains a camera control circuit as described above, and the camera and the lamp are powered by the control circuit to work.

[0019] The utility model discloses a beneficial effect lies in: set up the light on the camera and carry out illumination, and the illumination of light is the light compensation or provides the illumination effect for camera, wherein control circuit is integrated through the isolation circuit and the non-isolation circuit, and the isolation circuit and the non-isolation circuit common ground connection, and the isolation circuit is powered for camera, and the non-isolation circuit is powered for light, and the logic signal control of camera controls the on-off of non-isolation circuit, thereby realizing the illumination of light is controlled by the logic signal of camera, to realize the light emission illumination for the monitoring compensation or provides the illumination effect for camera, thereby reducing the cost, and use is more convenient. The multiple filtering circuit is set up in control circuit and carries out the filtering to voltage, makes the transmission of electric signal more pure, and the transformer in isolation circuit reduces voltage to 5V for the power supply of camera, and the non-isolation circuit output high voltage electric signal, thereby realizing the integration of high voltage and low voltage, reduces the cost of control circuit, and also facilitates installation. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below, obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] Figure 1 It is the schematic block diagram of the control circuit of the preferred embodiment of the utility model;

[0022] Figure 2 It is the schematic block diagram of the isolation module of the preferred embodiment of the utility model;

[0023] Figure 3 It is the schematic block diagram of the non-isolation module of the preferred embodiment of the utility model;

[0024] Figure 4 It is the specific structure schematic diagram of the control circuit of the preferred embodiment of the utility model;

[0025] Figure 5 It is the structure schematic diagram of the camera of the preferred embodiment of the utility model. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below, obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] The utility model discloses a control circuit of a camera, which comprises a voltage stabilizing circuit 10 connected with an input electric signal, a filter circuit 20 connected with the voltage stabilizing circuit, an isolation circuit 30 and a non-isolation circuit 50 connected with the filter circuit 20 respectively, the isolation circuit being connected with a camera 40 to supply power to the camera, and the non-isolation circuit being connected with a lamp 60 to supply power to the lamp. Figure 1 The camera 40 is also connected with the non-isolation circuit 50, and the electric signal is transmitted to the isolation circuit and the non-isolation circuit after being filtered by the filter circuit, wherein the isolation circuit supplies power to the camera, and the non-isolation circuit provides the electric signal to the lamp, wherein the logic signal of the camera also controls the non-isolation circuit, and only when the non-isolation circuit receives the logic signal of the camera that needs to be illuminated, the non-isolation circuit transmits the electric signal to the lamp to supply power to the lamp for illumination and light compensation, thereby providing better monitoring effect for the monitoring of the camera.

[0028] Specifically, as shown in Figure 2 The isolation circuit 30 comprises an isolation control module 300 connected with a filter module, and an isolation transformer module 301 connected with the isolation control module, the electric signal is stepped down by the isolation transformer module, the isolation transformer module 301 is connected with a first rectifier module 302, the first rectifier module is connected with a first filter module 303, and the other end of the first filter module is connected with the camera. The electric signal stepped down by the transformer module is rectified by the first rectifier module, and is filtered under the action of the first filter module, to obtain a more pure electric signal, and at this time, the electric signal is a 5V low-voltage voltage, and the camera is powered, so that the camera performs illumination work.

[0029] Further, as shown in Figure 3 The non-isolation circuit 50 comprises a second filter module 500 connected with the filter module 20, a non-isolation control module 501 connected with the second filter module, the camera 40 is connected with the non-isolation control module 501 through a fourth filter module 504, the non-isolation control module is connected with a voltage stabilizing module 502, the voltage stabilizing module is connected with a third filter module 503, and the third filter module is connected with the lamp 60. The high-voltage electric signal is transmitted to the non-isolation control module 501 after being filtered again by the second filter module 500, when the camera 40 needs light compensation or illumination, the camera sends the logic signal of the light compensation or illumination to the non-isolation control module 501, when the non-isolation control module receives the logic signal of the camera, the high-voltage signal is transmitted to the first voltage stabilizing module 502 for voltage stabilization, and then the impurity signal is filtered by the third filter module 503 to provide high-voltage voltage for the lamp, so that the lamp performs illumination or light compensation.

[0030] Further, as shown in Figure 4As shown, the electrical signal is connected to the control circuit through the J1 pin, and the input voltage value is stabilized under the action of the first stabilizing diode DB1, and then the AC part in the stabilized voltage is filtered out through the first electrolytic capacitor EC1 to provide a stable DC voltage. One end of the first electrolytic capacitor EC1 is connected to the first transformer T1, and the other end is connected to the 8th pin of the first chip U1. The other end of the first transformer is connected to the 5th pin of the first chip U1. The input voltage is stepped down through the first transformer. The secondary end of the first transformer is connected to the first diode D1. The other end of the first diode D1 is connected to the seventh resistor R7, the third electrolytic capacitor EC3 and the camera connection pin J2. The other end of the secondary is connected to the other end of the seventh resistor R7, the other end of the third electrolytic capacitor EC3 and the camera connection pin. The voltage after step-down is rectified through the first diode, and is filtered under the action of the seventh resistor and the third electrolytic capacitor to obtain a more pure 5V voltage signal and power the camera.

[0031] Further, as shown in Figure 4 The first electrolytic capacitor EC1 is also connected to the second electrolytic capacitor EC2. One end of the second electrolytic capacitor is connected to the 2nd pin of the second chip U2, and the other end is connected to the 4th pin of the second chip. The bottom 5th pin of the second chip is connected to the first inductor L1 and the second diode D2. The other end of the first electrolytic capacitor is connected to the fourth resistor R4, the fourth electrolytic capacitor EC4 and the lamp connection pin J3. The 4th pin of the second chip U2 is also connected to the other end of the second diode D2, the fourth resistor R4 and the fourth electrolytic capacitor EC4, and is connected to the lamp connection pin J3. The filtered high voltage signal is filtered again through the second electrolytic capacitor. When the second chip U2 receives the logic signal of the camera, the voltage is transmitted to the first inductor L1 to oscillate and provide a more stable electrical signal, and is stabilized under the second diode D2, and then is filtered through the fourth resistor R4 and the fourth electrolytic capacitor EC4, to obtain a more pure high voltage signal and power the lamp to illuminate.

[0032] Further, as shown in Figure 4As shown, the pin J3 connected with the camera is also connected with the ninth resistor R9, the other end of the ninth resistor R9 is connected with the eighth resistor R8 and the second capacitor C2, the other end of the second capacitor C2 is connected with the eighth resistor R8, and the ninth resistor R9 is also connected with the sixth pin of the second chip U2, in order to make the logic signal of the camera can be sent to the second chip, the first pin of the first chip U1 is grounded through the first capacitor C1, the second pin and the third pin are both grounded through the fifth resistor R5, the first pin of the second chip U2 is grounded through the third resistor R3, and the eighth pin is grounded through the first resistor R1 and the second resistor R2. By making the other pins of the first chip U1 and the second chip U2 common, the logic signal of the camera can be filtered through the ninth resistor R9, the eighth resistor R8 and the second capacitor C2, and the logic pulse signal is transmitted to the second chip after the noise is filtered out, the second chip is controlled by the change of the logic pulse signal to transmit the power to the pin J3, and the lamp is realized for lighting.

[0033] A camera according to a preferred embodiment of the present application comprises a camera 7 and a light 3 arranged on the camera 7, the camera 7 is connected with a pin J2, the light 3 is connected with a pin J3, and the camera 7 and the light 3 are powered by the control circuit as described above to make the camera and the light work cooperatively. Figure 5 As shown, the pin J3 connected with the camera is also connected with the ninth resistor R9, the other end of the ninth resistor R9 is connected with the eighth resistor R8 and the second capacitor C2, the other end of the second capacitor C2 is connected with the eighth resistor R8, and the ninth resistor R9 is also connected with the sixth pin of the second chip U2, in order to make the logic signal of the camera can be sent to the second chip, the first pin of the first chip U1 is grounded through the first capacitor C1, the second pin and the third pin are both grounded through the fifth resistor R5, the first pin of the second chip U2 is grounded through the third resistor R3, and the eighth pin is grounded through the first resistor R1 and the second resistor R2. By making the other pins of the first chip U1 and the second chip U2 common, the logic signal of the camera can be filtered through the ninth resistor R9, the eighth resistor R8 and the second capacitor C2, and the logic pulse signal is transmitted to the second chip after the noise is filtered out, the second chip is controlled by the change of the logic pulse signal to transmit the power to the pin J3, and the lamp is realized for lighting.

[0034] It should be understood that the present application is described by some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the present application. In addition, under the guidance of the present application, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the present application. Therefore, the present application is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope of protection of the present application.

Claims

1. A control circuit of a camera, comprising a voltage stabilizing circuit, a filter circuit, and an isolation circuit, characterized in that: The non-isolation circuit is further connected with the non-isolation circuit, The voltage signal is received and stabilized by the voltage stabilizing circuit; The voltage signal is filtered by the filter circuit connected with the voltage stabilizing circuit; The filtered voltage signal is transmitted to the low-voltage device interface after being stepped down by the isolation circuit connected with the filter circuit; The filtered voltage signal is transmitted to the high-voltage device interface by the non-isolation circuit connected with the non-isolation circuit.

2. The control circuit of claim 1, wherein: The low-voltage device is electrically connected with the non-isolation circuit, and the logic signal transmitted by the low-voltage device interface drives the on-off of the non-isolation circuit to control the on-off of the high-voltage device interface powered by the filtered voltage signal.

3. The control circuit of claim 1, wherein: The non-isolation circuit includes an isolation control module and an isolation transformer module connected with the isolation control module, and the isolation transformer module steps down the filtered voltage signal.

4. The control circuit of claim 3, wherein: The isolation transformer module is further connected with a first rectifier module, the first rectifier module is connected with a first filter module, and the first filter module is connected with the low-voltage device interface.

5. The control circuit of claim 4, wherein: The first rectifier module is a first diode connected with the isolation transformer module, the first filter module is a seventh resistor and a third electrolytic capacitor connected with the first diode, and the seventh resistor and the third electrolytic capacitor are connected in parallel.

6. The control circuit of claim 3, wherein: The non-isolation circuit includes a non-isolation control module, the low-voltage device is connected with the non-isolation control module, the non-isolation control module is connected with a first voltage stabilizing module, the first voltage stabilizing module is connected with a third filter module, and the third filter module is connected with the high-voltage device interface.

7. The control circuit of claim 6, wherein: The first voltage stabilizing module is a second diode and a first inductor connected with the non-isolation control module, the third filter module is a fourth resistor and a fourth electrolytic capacitor connected with the first inductor, and the fourth resistor and the fourth electrolytic capacitor are connected in parallel.

8. The control circuit of claim 3, wherein: The fourth filter module is connected between the low-voltage device interface and the non-isolation control module, and the pins of the isolation control module and the non-isolation control module are connected in common through resistors.

9. The control circuit of claim 8, wherein: The fourth filter module includes a ninth resistor, an eighth resistor and a second capacitor connected with the ninth resistor, and the eighth resistor and the second capacitor are connected in parallel.

10. A camera, comprising a camera, and a lamp arranged on the camera, a control board is arranged in the camera, the control board is connected with the camera and the lamp, characterized in that: The control board contains a camera control circuit as claimed in any one of claims 1-9, and the camera and the lamp are powered by the control circuit to work.

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