Industrial wide-voltage high-integration camera device control panel

Abstract

An industrial wide-voltage high-integration camera device control panel comprises a wide-voltage power conversion circuit arranged on the control panel, a power supply interface XS1 is arranged on the wide-voltage power conversion circuit, the power supply interface XS1 is connected with an external power supply, and the wide-voltage power conversion circuit is respectively connected with a 5V power circuit and an interface circuit for power supply. The 5V power supply circuit is respectively connected with the 3.3 V power supply circuit and the data communication circuit for power supply, and the 3.3 V power supply circuit is connected with the main control circuit for power supply. The camera device control panel has the beneficial effects that the problems of non-uniform and unstable DC power supply voltage in an industrial environment and low control function integration level in the prior art are solved, and the camera device control panel has the advantages of high integration level, good stability, strong expandability and the like. Compared with the prior art, the design scheme adopted by the control panel is higher in integration level, not only can meet the use requirements of various severe industrial environments be met, but also the occupation of related circuits on internal space resources of the front-end camera equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of integrated control panels, and more specifically to an industrial wide-voltage high-integration camera device control panel. Background Art

[0002] The camera control panel is different from the conventional indoor and outdoor monitoring environment. The power supply and network conditions in the industrial monitoring environment are more complicated. Due to the influence of factors such as the natural environment and surge current impact, the power supply voltage fluctuates, which will affect the working stability of the front-end monitoring equipment.

[0003] In different projects, multiple DC power supplies may be arranged due to different power supply requirements of the equipment. Therefore, the layout and type of the internal hardware of the equipment will be different, affecting the versatility of the equipment hardware, and there is a possibility of equipment damage due to incorrect operation of high voltage input.

[0004] At the same time, due to the harsh working conditions in industrial environments, the normal use of front-end monitoring equipment may be interfered with, work efficiency may be affected, and potential safety risks may occur. Therefore, it is usually necessary to add various additional functional modules, such as wiper devices, lighting, etc. In order to control the above additional modules, the control board needs to integrate related control circuits and peripheral interfaces, which takes up a lot of space and has low space utilization.

[0005] To sum up, it is necessary to optimize the internal circuit of the front-end equipment so that the front-end monitoring equipment can be compatible with the commonly used DC voltages in various industrial environments and operate stably, and be able to reduce the size of the control board as much as possible on the basis of integrating the control of the above-mentioned functional modules, and design an industrial wide-voltage and highly integrated camera device control board. Utility Model Content

[0006] The utility model overcomes the shortcomings of the prior art and provides an industrial wide-voltage high-integration camera device control board.

[0007] The purpose of the utility model is achieved through the following technical solutions.

[0008] An industrial wide-voltage high-integration camera device control board includes a wide-voltage power conversion circuit on the control board, a power supply interface XS1 is provided on the wide-voltage power conversion circuit, the power supply interface XS1 is connected to an external power supply, the wide-voltage power conversion circuit is respectively connected to a 5V power circuit and an interface circuit for power supply, the 5V power circuit is respectively connected to a 3.3V power circuit and a data communication circuit for power supply, and the 3.3V power circuit is connected to a main control circuit for power supply.

[0009] Pin 2 of the power supply interface XS1 is connected to the transient suppression diode D3, the fuse F1 and the EN pin of the synchronous voltage regulation control chip U3 in sequence, and pin 1 of the power supply interface XS1 is connected to the output end of the fuse F1 in parallel with a capacitor C1, a capacitor C20 and a resistor R1, and a light-emitting diode LED3 is provided on the connection path of the resistor R1, and the output end of the light-emitting diode LED3 is respectively connected to pin 2 of the power supply interface XS1 and the ground end;

[0010] A filter capacitor C17, a filter capacitor C18, a filter capacitor C21 and a filter capacitor C22 are provided in parallel with the ground terminal on the path from the fuse F1 to the EN pin of the synchronous voltage stabilization control chip U3.

[0011] The 3.3V power supply circuit is provided with a power supply voltage regulator chip U2. The 2-pin VOUT end of the power supply voltage regulator chip U2 is connected to the main control chip provided on the main control circuit for power supply. The 4-pin of the power supply voltage regulator chip U2 is connected to the filter circuit.

[0012] The filter circuit includes filter capacitors C9, C10, C11, C12 and C13. The four pins of the source voltage stabilizing chip U2 are connected in parallel with the ground terminal through filter capacitors C9, C10, C11, C12 and C13 respectively.

[0013] The main control chip arranged on the main control circuit is connected to the crystal oscillator circuit, and the crystal oscillator circuit is respectively connected to the OSC_OUT and OSC_IN pins of the main control chip.

[0014] The control panel is provided with a program download port H1.

[0015] The RST / NRST pin of the main control chip is connected to the reset circuit.

[0016] The beneficial effects of the utility model are:

[0017] This solution has the advantages of high integration, good stability and strong scalability, which are listed one by one.

[0018] 1. The utility model integrates a wide voltage power conversion circuit into the control board device on the basis of realizing multiple module control and control signal acquisition functions. Compared with the traditional solution of combining a wide voltage power supply board with a control circuit board, the design solution adopted by this control board has a higher degree of integration, which can not only meet the use requirements of various harsh industrial environments, but also reduce the occupation of internal space resources of the front-end camera equipment by related circuits, so that the front-end monitoring equipment can be further reduced in size on the basis of meeting multiple functions.

[0019] 2. The utility model adds a wide voltage power conversion circuit to the traditional control panel circuit, avoiding the use of a wire harness connection between the traditional wide voltage circuit and the control panel, and reducing the probability of problems such as cable breakage, falling off or cable aging. During use, the control panel device processes the input voltage in real time, converts the input voltage into a stable rated output voltage, and processes the electromagnetic interference generated during power transmission, avoiding the instability of the front-end monitoring equipment caused by power interference caused by the harsh construction environment.

[0020] 3. In order to ensure that the front-end monitoring equipment can achieve all-weather observation in the industrial environment, the utility model integrates control circuits of various additional functional modules inside the control board, which can be used for equipment expansion, so that the functions of the front-end monitoring equipment are further improved to meet the needs of more application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a circuit diagram of a wide voltage power conversion circuit;

[0022] Figure 2 This is the circuit diagram of the 5V power supply circuit;

[0023] Figure 3 This is the circuit diagram of the 3.3V power supply circuit;

[0024] Figure 4 It is the circuit diagram of the filter circuit;

[0025] Figure 5 is a circuit diagram of a data communication circuit;

[0026] Figure 6 is a circuit diagram of the interface circuit;

[0027] Figure 7 It is the circuit diagram of the main control circuit;

[0028] Figure 8 It is a schematic diagram of the appearance of the printed circuit board of the industrial wide voltage high integration camera device control board;

[0029] In the figure: 1. Wide voltage power supply conversion circuit; 2. 5V power supply circuit; 3. 3.3V power supply circuit; 4. Filter circuit; 5. Data communication circuit; 6. Interface circuit; 61. Movement interface; 62. Gun interface; 63. Wiper light interface; 64. Function interface; 65. External network interface; 66. Audio alarm interface; 7. Main control circuit; 71. Main control chip; 72. Crystal oscillator circuit; 73. Reset circuit; 74. Program download port. 8. Control board. DETAILED DESCRIPTION

[0030] The technical solution of the utility model is further described below through specific embodiments.

[0031] Example

[0032] An industrial wide-voltage high-integration camera device control board includes a wide-voltage power conversion circuit 1 provided on a control board 8, a power supply interface XS1 provided on the wide-voltage power conversion circuit 1, the power supply interface XS1 is connected to an external power supply, the wide-voltage power conversion circuit 1 is respectively connected to a 5V power circuit 2 and an interface circuit 6 for power supply, the 5V power circuit 2 is respectively connected to a 3.3V power circuit 3 and a data communication circuit 5 for power supply, and the 3.3V power circuit 3 is connected to a main control circuit 7 for power supply.

[0033] Pin 2 of the power supply interface XS1 is connected to the transient suppression diode D3, the fuse F1 and the EN pin of the synchronous voltage regulation control chip U3 in sequence, and pin 1 of the power supply interface XS1 is connected to the output end of the fuse F1 in parallel with a capacitor C1, a capacitor C20 and a resistor R1, and a light-emitting diode LED3 is provided on the connection path of the resistor R1, and the output end of the light-emitting diode LED3 is respectively connected to pin 2 of the power supply interface XS1 and the ground end;

[0034] A filter capacitor C17, a filter capacitor C18, a filter capacitor C21 and a filter capacitor C22 are provided in parallel with the ground terminal on the path from the fuse F1 to the EN pin of the synchronous voltage stabilization control chip U3.

[0035] The 3.3V power supply circuit 3 is provided with a power supply voltage regulator chip U2, and the 2nd pin VOUT end of the power supply voltage regulator chip U2 is connected to the main control chip 71 provided on the main control circuit 7 for power supply, and the 4th pin of the power supply voltage regulator chip U2 is connected to the filter circuit 4.

[0036] The filter circuit 4 includes filter capacitors C9, C10, C11, C12 and C13. The 4 pins of the source voltage stabilizing chip U2 are connected in parallel with the ground terminal through filter capacitors C9, C10, C11, C12 and C13 respectively.

[0037] The main control chip 71 provided on the main control circuit 7 is connected to the crystal oscillator circuit 72 , and the crystal oscillator circuit 72 is connected to the OSC_OUT and OSC_IN pins of the main control chip 71 respectively.

[0038] The control board 8 is provided with a program download port 74H1.

[0039] The RST / NRST pin of the main control chip 71 is connected to the reset circuit 73 .

[0040] like Figure 1-8 As shown, the working principle of the utility model is as follows:

[0041] When the power is input to the industrial wide voltage high integration camera device control board 8 through the power supply interface XS1, it is processed by the synchronous voltage stabilization control chip U3 in the wide voltage power conversion circuit 1 and stepped down to the working voltage DC 5V when the chip in the tail plate of the movement works normally. The commonly used DC voltage in industrial environments is DC 9V-54V. When the external input voltage is too high, the fuse in the power circuit will automatically disconnect to protect the subsequent circuit.

[0042] The external voltage is connected to the power supply interface XS1 through a cable, and the network signal is input to the external network interface 65 in the interface circuit through a network cable, that is, the CN6 interface in the figure. Pin 2 of XS1 is connected to the transient suppression diode D3. When the input voltage is normal, the voltage can be transmitted to the subsequent circuit; if the voltage is higher than the specified standard value, the component will break down to prevent the subsequent circuit from being damaged under high voltage. The power supply is input to the fuse F1 after passing through the transient suppression diode D3 to prevent the external input voltage from overloading and causing the equipment to burn. After passing through the fuse F1, the current passes through capacitors C1, C20, resistor R1, light-emitting diode LED3 and other devices, and the lighting state of the light-emitting diode is used to indicate the current power-on state.

[0043] When the input voltage does not trigger the above circuit protection, the voltage is input to the synchronous voltage stabilization control chip U3 through the filter capacitor C17, the filter capacitor C18, the filter capacitor C21 and the filter capacitor C22.

[0044] In this embodiment, U3 uses a high-performance automotive-grade voltage regulator chip with a wide input voltage processing capability, a voltage regulation processing range of 3.5V to 80V, and an operating temperature range of -40°C to 125°C. It can effectively cope with the DC9V-54V DC voltage commonly used in industrial environments and work stably in various high and low temperature working conditions. The chip has built-in input undervoltage protection, output short circuit, overcurrent protection and other functions, which can effectively avoid equipment damage caused by faults in the circuit, and shut down the power supply in time to enter the protection state. The chip has good anti-EMI performance integrated inside, and has good EMC characteristics. It can prevent surges in the power transmission network, and prevent permanent interference such as "ripple" or "noise" caused by other industrial high-power equipment and systems from affecting the front-end monitoring equipment, thereby extending the service life of the equipment. The chip has a response speed of 200μs, which is extremely fast. During use, the input voltage can be processed in real time to convert the input voltage into a stable rated output voltage. At the same time, the power conversion efficiency of the chip is as high as 99%, which can effectively avoid power loss during power conversion.

[0045] The DC 12V voltage after voltage stabilization and conversion by the synchronous voltage stabilization control chip U3 is input to the 5V power supply circuit 2 and the 3.3V power supply circuit 3. After being processed by the filter circuit 4, the DC 12V voltage is finally reduced to the normal working voltage DC 3.3V of the main control chip 71 by the power voltage stabilization chip U2. After the output pin of the power voltage stabilization chip U2 outputs the DC 3.3V voltage, it is input to the main control chip 71 after filtering processing by the filter capacitors C9, C10, C11, C12 and C13 set in the filter circuit. In this embodiment, the main control chip 71 adopts STM32F103RET6 to realize the power supply to the processor. The crystal oscillator circuit 72 is connected to the OSC_OUT and OSC_IN pins of the main control chip 71 to provide the clock frequency required by the control board 8.

[0046] The control program of the overall control board 8 is downloaded through the program download port 74, namely the H1 interface, to realize the program update function. When there is a problem with the program of the control board 8, the reset circuit 73 connected to the RST / NRST pin of the main control chip 71 can restore the circuit to the initial state.

[0047] At the same time, after the output pin of the power supply voltage regulator chip U6 outputs the DC 5V voltage, it is input into the line transceiver chip U4 and the line transceiver chip U5 in the data communication circuit line 5 of the camera system control board to realize the power supply of the data communication circuit. Among them, the data communication circuit where the line transceiver chip U4 is located is responsible for receiving the RS 485 data sent from the outside, which can realize the control of the overall front-end monitoring equipment; the data communication circuit where the line transceiver chip U5 is located is responsible for processing the control command data sent by the network core device. The control board 8 is directly connected to the core device through a 36-core flat cable, which can directly transmit control instructions and power the camera module. After receiving the instructions from the control board 8, the core device will execute the received instructions. After executing the control instructions sent by the network, the core device will return an RS485 control command that matches the command. The RS485 control command fed back will be transmitted to the function interface 64, namely the CN5 interface, in the data communication circuit 5 of the control board 8, and converted into a TTL signal by the line transceiver chip and transmitted to the USART5_TXD / PC12 and USART5_RXD / PB3 pins of the main control chip 71, and the transmitted TTL signal will be processed.

[0048] The DC 12V voltage after voltage stabilization and conversion by the synchronous voltage stabilization control chip U3 is input to the internal circuit of the control board 8 and transmitted to the interface circuit 6 to power the movement device, wiper device, and lighting device built into the front-end monitoring equipment.

[0049] The movement interface P1 is directly connected to the movement device through a 36-core FPC flat cable, and is powered by the movement device and transmits network data; the gun interface 62, namely the CN7 interface, is used to connect the movement module, which can power the movement module and transmit network video data.

[0050] The wiper and light interface 63, namely the CN1 interface, is used to power the wiper device and the lighting device. This port is connected to the GD1, GD2, IN1, IN2, Q_A, PB0, SF_A, and SF_B interfaces of the main control chip 71 through the internal circuit of the control board 8 to realize the control function of the above-mentioned additional modules.

[0051] The external network interface 65, namely the CN6 interface, is connected via a network cable and is used for network data transmission of the front-end monitoring equipment. The DC 12V power supply in the interface can also be used to power non-programmable additional modules, such as heat dissipation devices.

[0052] Function interface 64, i.e. CN5 interface, is a control data receiving and sending interface, which has an RS 485 data receiving port and integrates audio and alarm interfaces. It can be connected to the CN5 interface of the control board through a data cable to achieve connection with an external audio input device and an alarm data module. When the external audio input device and the alarm data module send control data, the control board 8 can transmit the received control command to the movement device through this interface, so that the movement device can make corresponding control effects.

[0053] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. Industrial wide voltage high integration camera control board, characterized by: A wide voltage power conversion circuit is provided on the control board, a power supply interface XS1 is provided on the wide voltage power conversion circuit, the power supply interface XS1 is connected to an external power supply, the wide voltage power conversion circuit is respectively connected to a 5V power supply circuit and an interface circuit for power supply, the 5V power supply circuit is respectively connected to a 3.3V power supply circuit and a data communication circuit for power supply, and the 3.3V power supply circuit is connected to a main control circuit for power supply.

2. The industrial wide voltage high integration camera device control board according to claim 1, characterized in that: Pin 2 of the power supply interface XS1 is connected to the transient suppression diode D3, the fuse F1 and the EN pin of the synchronous voltage regulation control chip U3 in sequence, and pin 1 of the power supply interface XS1 is connected to the output end of the fuse F1 in parallel with a capacitor C1, a capacitor C20 and a resistor R1, and a light-emitting diode LED3 is provided on the connection path of the resistor R1, and the output end of the light-emitting diode LED3 is respectively connected to pin 2 of the power supply interface XS1 and the ground end; A filter capacitor C17, a filter capacitor C18, a filter capacitor C21 and a filter capacitor C22 are provided in parallel with the ground terminal on the path from the fuse F1 to the EN pin of the synchronous voltage stabilization control chip U3.

3. The industrial wide voltage high integration camera device control board according to claim 1, characterized in that: The 3.3V power supply circuit is provided with a power supply voltage regulator chip U2. The 2-pin VOUT end of the power supply voltage regulator chip U2 is connected to the main control chip provided on the main control circuit for power supply. The 4-pin of the power supply voltage regulator chip U2 is connected to the filter circuit.

4. The industrial wide voltage high integration camera device control board according to claim 3, characterized in that: The filter circuit includes filter capacitors C9, C10, C11, C12 and C13. The four pins of the source voltage stabilizing chip U2 are connected in parallel with the ground terminal through filter capacitors C9, C10, C11, C12 and C13 respectively.

5. The industrial wide voltage high integration camera device control board according to claim 1, characterized in that: The main control chip arranged on the main control circuit is connected to the crystal oscillator circuit, and the crystal oscillator circuit is respectively connected to the OSC_OUT and OSC_IN pins of the main control chip.

6. The industrial wide voltage high integration camera device control board according to claim 1, characterized in that: The control panel is provided with a program download port H1.

7. The industrial wide voltage high integration camera device control board according to claim 1, characterized in that: The RST / NRST pin of the main control chip is connected to the reset circuit.

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