A power supply board applied to lidar

Abstract

The present application discloses a power supply board for a lidar. Under the signal control of each voltage conversion module at the corresponding drive signal receiving port, the power supply board converts the 24V DC voltage provided by the 24V DC power supply output module into the DC or AC voltage currently required by the lidar. Additionally, under the signal control of the corresponding drive signal receiving port and the power supply of the 24V DC power supply output module, the power supply board generates a relay control signal to drive the corresponding relay, thereby driving the lidar in the current working mode. Since this power supply board only requires one 24V DC power supply output module for power supply, it occupies less space and is beneficial to the overall integration of the power supply circuit.

Description

Technical Field

[0001] This application relates to the field of lidar devices, and particularly to a power supply board applied to lidar. Background Art

[0002] A lidar is a radar system that detects the position, speed, and other characteristic quantities of a target by emitting a laser beam. Its working principle is to emit a detection signal to the target, and then compare the received target echo reflected from the target with the emitted signal. After appropriate processing, relevant information about the target can be obtained, such as parameters like target distance, azimuth, altitude, speed, attitude, and even shape, so as to detect, track, and identify targets such as airplanes and missiles. Using a laser as the emission light source and adopting the main means of optoelectronic detection technology, lidar is an advanced detection method that combines laser technology and modern optoelectronic detection technology, and consists of a transmission system, a reception system, information processing, and other parts. The transmission system is composed of various forms of lasers, such as carbon dioxide lasers, neodymium-doped yttrium aluminum garnet lasers, semiconductor lasers, and wavelength-tunable solid-state lasers, as well as an optical beam expander unit, etc.; the reception system uses a telescope and various forms of photodetectors, such as photomultiplier tubes, semiconductor photodiodes, avalanche photodiodes, infrared and visible light multi-element detection devices, etc.

[0003] The power supply requirements of lidar are different in different working modes. Therefore, the power supply system of lidar needs to control the output of the corresponding required voltage according to the current working mode to supply power to the lidar. However, the existing power supply control circuit has a complex control process and occupies a large space, which is not conducive to the overall integration of the power supply circuit. Summary of the Invention

[0004] The purpose of this application is to provide a power supply board applied to lidar, which can improve the above problems.

[0005] The embodiments of this application are implemented as follows:

[0006] This application provides a power supply board applied to lidar, which includes:

[0007] A power supply module, a drive signal receiving end, a 24V DC power output module, a latch, a relay drive module, and multiple voltage conversion modules;

[0008] The power supply module is used to supply power to other devices on the power supply board;

[0009] The drive signal receiving end includes a plurality of drive signal receiving ports, and the number of the drive signal receiving ports is the same as that of the voltage conversion modules; each of the drive signal receiving ports is electrically connected to each input end of the latch, and each output end of the latch is electrically connected to the control end of the corresponding voltage conversion module or the relay drive module;

[0010] The voltage input ends of each of the voltage conversion modules are all electrically connected to the output end of the 24V DC power supply output module, and are used for converting the output voltage of the 24V DC power supply output module into a corresponding target voltage to supply power to the lidar under the control of the control end;

[0011] The voltage input ends of each of the relay drive modules are all electrically connected to the output end of the 24V DC power supply output module, and are used for generating a relay control signal under the control of the control end to drive the corresponding relay so as to drive the lidar.

[0012] It can be understood that the present application discloses a power supply board applied to a lidar. The power supply board converts the 24V DC voltage provided by the 24V DC power supply output module into the DC or AC voltage required by the lidar at present under the signal control of each voltage conversion module at the corresponding drive signal receiving port; in addition, the power supply board generates a relay control signal under the signal control of the corresponding drive signal receiving port and the power supply of the 24V DC power supply output module through the relay drive module to drive the corresponding relay so as to drive the lidar in the current working mode. Since the power supply board only needs one 24V DC power supply output module for power supply, it occupies less space and is beneficial to the overall integration of the power supply circuit.

[0013] In an optional embodiment of the present application, the power supply module includes a 5V voltage supply module and a 3.3V voltage supply module; the input end of the 5V voltage supply module is electrically connected to the output end of the 24V DC power supply output module, and the input end of the 3.3V voltage supply module is electrically connected to the output end of the 5V voltage supply module.

[0014] Among them, the 5V voltage supply module converts the 24V DC voltage output by the 24V DC power supply output module into a 5V DC voltage through a switching regulator of model TPS54302DDCR for supplying power to other devices on the power supply board; the 3.3V voltage supply module further converts the 5V DC voltage output by the 5V voltage supply module into a 3.3V DC voltage through a switching regulator of model TPS563249DDCR for supplying power to other devices on the power supply board.

[0015] In an alternative embodiment of the present application, the drive signal receiving end includes: a 12V DC drive signal receiving port, a 5V DC drive signal receiving port, a 220V AC drive signal receiving port, and a relay drive signal receiving port; the voltage conversion module includes a 220V AC voltage conversion module, a 12V DC voltage conversion module, and a 5V DC voltage conversion module.

[0016] Among them, the 220V AC voltage conversion module is used to convert the 24V DC voltage provided by the 24V DC power supply output module into the 220V AC voltage required by the lidar currently under the control of the signal at the 220V AC drive signal receiving port; the 12V DC voltage conversion module is used to convert the 24V DC voltage provided by the 24V DC power supply output module into the 12V DC voltage required by the lidar currently under the control of the signal at the 12V DC drive signal receiving port; the 5V DC voltage conversion module is used to convert the 24V DC voltage provided by the 24V DC power supply output module into the 5V DC voltage required by the lidar currently under the control of the signal at the 5V DC drive signal receiving port; the relay drive module is used to generate a relay control signal under the control of the signal at the relay drive signal receiving port to drive the corresponding relay so as to drive the lidar.

[0017] In an alternative embodiment of the present application, the 220V AC voltage conversion module includes a first positive input terminal, a first negative input terminal, a first positive output terminal, a first negative output terminal, a first control terminal, an AC module resistor, a first P-type MOS field effect transistor, a first N-type MOS field effect transistor, a first bipolar junction transistor, and an AC module capacitor;

[0018] The first control terminal is electrically connected to the 220V AC drive signal receiving port; the first positive input terminal and the first negative input terminal are electrically connected to the 24V DC power supply output module;

[0019] The first positive input terminal is electrically connected to the emitter of the first bipolar junction transistor, and two of the AC module resistors are connected in parallel between the emitter and the base of the first bipolar junction transistor, and one of the AC module resistors is connected in parallel between the base and the collector of the first bipolar junction transistor;

[0020] The base of the first bipolar junction transistor is electrically connected to the source of the first P-type MOS field effect transistor, the collector of the first bipolar junction transistor is electrically connected to the gate of the first P-type MOS field effect transistor, and the drain of the first P-type MOS field effect transistor is electrically connected to the first positive output terminal;

[0021] An AC module resistor is electrically connected between the gate of the first P-type MOS field effect transistor and the first negative input terminal. The first negative input terminal is electrically connected to the source of the first N-type MOS field effect transistor. The drain of the first N-type MOS field effect transistor is electrically connected to the first negative output terminal. An AC module resistor and an AC module capacitor are connected in parallel between the gate and the source of the first N-type MOS field effect transistor. The gate of the first N-type MOS field effect transistor is electrically connected to the first control terminal through an AC module resistor.

[0022] Wherein, an AC module diode is electrically connected between the source and the drain of the first P-type MOS field effect transistor and the first N-type MOS field effect transistor.

[0023] Wherein, the first P-type MOS field effect transistor is a P-channel enhancement mode metal oxide semiconductor field effect transistor (Metal-Oxide-Semiconductor Field-Effect-Transistor, MOSFET), and the first N-type MOS field effect transistor is an N-channel enhancement mode MOS field effect transistor.

[0024] Wherein, the first bipolar junction transistor (Bipolar Junction Transistor, BJT) is a PNP type BJT.

[0025] In an alternative embodiment of the present application, the 12V DC voltage conversion module includes a first voltage conversion chip of model KUB48-QB-10A. The control terminal of the first voltage conversion chip is the second control terminal, and the second control terminal is electrically connected to the 12V DC drive signal receiving port. The positive input terminal and the negative input terminal of the first voltage conversion chip are the second positive input terminal and the second negative input terminal respectively. The second positive input terminal and the second negative input terminal are electrically connected to the 24V DC power supply output module. The positive output terminal and the negative output terminal of the first voltage conversion chip are the second positive output terminal and the second negative output terminal respectively, and the second negative output terminal is grounded.

[0026] Wherein, the KUB48-QB-10A series of products have an output current of 10A, a wide voltage input range, an efficiency as high as 97%, an allowable operating temperature of -40°C to 85°C, and functions of input undervoltage protection, output short-circuit protection, and output overcurrent protection, and are widely used in fields such as robots and battery-powered devices.

[0027] In an alternative embodiment of the present application, the 5V direct current voltage conversion module includes a second voltage conversion chip with the model number VRB-LD-30WR3; the control terminal of the second voltage conversion chip is the third control terminal, and the third control terminal is electrically connected to the 5V direct current drive signal receiving port; the positive input terminal and the negative input terminal of the second voltage conversion chip are the third positive input terminal and the third negative input terminal respectively; the third positive input terminal and the third negative input terminal are electrically connected to the 24V direct current power supply output module; the positive output terminal and the negative output terminal of the second voltage conversion chip are the third positive output terminal and the third negative output terminal respectively, and the third negative output terminal is grounded.

[0028] Among them, the VRB-LD-30WR3 series of products has an output power of 30W, a 2:1 wide voltage input range, an efficiency as high as 90%, a conventional isolation voltage of 1500VDC, an allowable operating temperature of -40°C to 80°C, and has functions of output short-circuit protection, output overvoltage protection, and output overcurrent protection, and is widely used in fields such as data transmission equipment, battery-driven equipment, communication equipment, and distributed power supply systems.

[0029] In an alternative embodiment of the present application, the relay drive module includes a fourth positive input terminal, a fourth negative input terminal, a fourth positive output terminal, a fourth negative output terminal, a fourth control terminal, a relay drive module resistor, a second P-type MOS field effect transistor, a second N-type MOS field effect transistor, a second bipolar junction transistor, and a relay drive module capacitor;

[0030] The fourth control terminal is electrically connected to the relay drive signal receiving port; the fourth positive input terminal and the fourth negative input terminal are electrically connected to the 24V direct current power supply output module; the fourth positive output terminal and the fourth negative output terminal are used to control the corresponding relay;

[0031] The fourth positive input terminal is electrically connected to the emitter of the second bipolar junction transistor, and two of the relay drive module resistors are connected in parallel between the emitter and the base of the second bipolar junction transistor, and one of the relay drive module resistors is connected in parallel between the base and the collector of the second bipolar junction transistor;

[0032] The base of the second bipolar junction transistor is electrically connected to the source of the second P-type MOS field effect transistor, the collector of the second bipolar junction transistor is electrically connected to the gate of the second P-type MOS field effect transistor, and the drain of the second P-type MOS field effect transistor is electrically connected to the fourth positive output terminal;

[0033] A relay driving module resistor is electrically connected between the gate of the second P-type MOS field-effect transistor and the fourth negative input terminal. The fourth negative input terminal is electrically connected to the source of the second N-type MOS field-effect transistor. The drain of the second N-type MOS field-effect transistor is electrically connected to the fourth negative output terminal. A relay driving module resistor and a relay driving module capacitor are connected in parallel between the gate and the source of the second N-type MOS field-effect transistor. The gate of the second N-type MOS field-effect transistor is electrically connected to the fourth control terminal.

[0034] Wherein, a relay driving module diode is electrically connected between the source and the drain of the second P-type MOS field-effect transistor and the second N-type MOS field-effect transistor.

[0035] Wherein, the second P-type MOS field-effect transistor is a P-channel enhancement-mode MOS field-effect transistor, and the second N-type MOS field-effect transistor is an N-channel enhancement-mode MOS field-effect transistor.

[0036] Wherein, the second bipolar junction transistor is a PNP-type BJT transistor.

[0037] In an alternative embodiment of the present application, the drive signal receiving end further includes a latch enable control signal receiving port, and the latch enable control signal receiving port is electrically connected to the enable end of the latch. It can be understood that the latch is enabled under the signal control of the latch enable control signal receiving port.

[0038] In an alternative embodiment of the present application, the drive signal receiving end further includes a relay control signal receiving port; the power supply board further includes a relay control module; the input end of the relay control module is electrically connected to the relay control signal receiving port, and the relay control module is used to control the operation of the target relay in the relay control module according to the relay control signal received by the relay control signal receiving port, so as to drive the lidar.

[0039] Wherein, the relay control module includes a relay control module resistor, a relay control module capacitor, a target relay, and a relay driving chip; two signal input ends of the relay driving chip are respectively electrically connected to the corresponding two relay control signal receiving ports, and two signal output ends of the relay driving chip are respectively electrically connected to the two input control ends of the target driver. Wherein, the model of the relay driving chip is BL8023F.

[0040] Beneficial effects:

[0041] The present application discloses a power supply board for a lidar. The power supply board, under the signal control of each voltage conversion module at the corresponding drive signal receiving port, converts the 24V DC voltage provided by the 24V DC power supply output module into the DC or AC voltage currently required by the lidar. Additionally, the power supply board, under the signal control of the corresponding drive signal receiving port and powered by the 24V DC power supply output module through the relay drive module, generates a relay control signal to drive the corresponding relay, thereby driving the lidar in the current working mode. Since the power supply board only requires one 24V DC power supply output module for power supply, it occupies less space and is beneficial to the overall integration of the power supply circuit.

[0042] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specific embodiments are given, in conjunction with the accompanying drawings, and are described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0044] Figure 1 is a schematic structural diagram of a power supply board for a lidar provided by the present application;

[0045] Figure 2 is a schematic structural diagram of the 5V voltage supply module;

[0046] Figure 3 is a schematic structural diagram of the 3.3V voltage supply module;

[0047] Figure 4 is a schematic structural diagram of the 220V AC voltage conversion module;

[0048] Figure 5 is a schematic structural diagram of the 12V DC voltage conversion module;

[0049] Figure 6 is a schematic structural diagram of the 5V DC voltage conversion module;

[0050] Figure 7 is a schematic structural diagram of the first relay drive module;

[0051] Figure 8 is a schematic structural diagram of the relay control module.

[0052] Reference Numerals in the Drawings:

[0053] Drive signal receiving end 10, 24V DC power output module 20, latch 30, first relay drive module 40, 220V AC voltage conversion module 51, 12V DC voltage conversion module 52, 5V DC voltage conversion module 53, 5V voltage supply module 61, 3.3V voltage supply module 62, relay control module 70, relay drive chip 71, target relay 72. Detailed implementation

[0054] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0055] As Figure 1 shown, the present application provides a power supply board applied to a lidar, which includes: a power supply module (not shown in the figure), a drive signal receiving end 10, a 24V DC power output module 20, a latch 30, a relay drive module, and a plurality of voltage conversion modules. The power supply module is used to supply power to other devices on the power supply board.

[0056] Figure 1 Four relay drive modules are shown in

[0057] : the first relay drive module 40, the second relay drive module, the third relay drive module, and the fourth relay drive module. In the following description, the first relay drive module 40 will be taken as an example for introduction.

[0058] The voltage input ends of each voltage conversion module are electrically connected to the output end of the 24V DC power output module 20, and are used to convert the output voltage of the 24V DC power output module 20 into a corresponding target voltage under the control of the control end to supply power to the lidar.

[0059] The voltage input ends of each relay driving module 40 are electrically connected to the output end of the 24V DC power supply output module 20, and are used to generate a relay control signal under the control of the control end to drive the corresponding relay so as to drive the lidar.

[0060] It can be understood that the present application discloses a power supply board applied to a lidar. The power supply board converts the 24V DC voltage provided by the 24V DC power supply output module 20 into the DC or AC voltage required by the lidar currently under the signal control of each voltage conversion module at the corresponding drive signal receiving port; in addition, the power supply board generates a relay control signal under the signal control of the corresponding drive signal receiving port of the relay driving module 40 and the power supply of the 24V DC power supply output module 20 to drive the corresponding relay so as to drive the lidar in the current working mode. Since the power supply board only needs one 24V DC power supply output module 20 for power supply, it occupies less space and is beneficial to the overall integration of the power supply circuit.

[0061] In an optional embodiment of the present application, the drive signal receiving end 10 includes: 12V DC drive signal receiving ports P5 and P6, 5V DC drive signal receiving port P7, 220V AC drive signal receiving ports P4, and relay drive signal receiving ports P0 to P3; the voltage conversion module includes a 220V AC voltage conversion module 51, a 12V DC voltage conversion module 52, and a 5V DC voltage conversion module 53.

[0062] Figure 1 One 220V AC voltage conversion module 51, one 5V DC voltage conversion module 53, and two 12V DC voltage conversion modules 52 are shown.

[0063] Among them, the 220V AC voltage conversion module 51 is used to convert the 24V DC voltage provided by the 24V DC power supply output module 20 into the 220V AC voltage required by the lidar currently under the signal control of the 220V AC drive signal receiving port P4; the 12V DC voltage conversion module 52 is used to convert the 24V DC voltage provided by the 24V DC power supply output module 20 into the 12V DC voltage required by the lidar currently under the signal control of the 12V DC drive signal receiving port P5; the 5V DC voltage conversion module 53 is used to convert the 24V DC voltage provided by the 24V DC power supply output module 20 into the 5V DC voltage required by the lidar currently under the signal control of the 5V DC drive signal receiving port P7; the relay driving module 40 is used to generate a relay control signal under the signal control of the relay drive signal receiving port P0 to drive the corresponding relay so as to drive the lidar.

[0064] In an optional embodiment of the present application, asFigure 2 and Figure 3 As shown in Figure 3 , the power supply module includes a 5V voltage supply module 61 and a 3.3V voltage supply module 62; the input end of the 5V voltage supply module 61 is electrically connected to the output end of the 24V DC power supply output module 20, and the input end of the 3.3V voltage supply module 62 is electrically connected to the output end of the 5V voltage supply module 61.

[0065] Among them, the 5V voltage supply module 61 converts the 24V DC voltage output by the 24V DC power supply output module 20 into a 5V DC voltage through a switching regulator of model TPS54302DDCR for powering other devices on the power supply board; the 3.3V voltage supply module 62 further converts the 5V DC voltage output by the 5V voltage supply module 61 into a 3.3V DC voltage through a switching regulator of model TPS563249DDCR for powering other devices on the power supply board.

[0066] In an optional embodiment of the present application, as Figure 4 shown, the 220V AC voltage conversion module 51 includes a first positive input terminal A1, a first negative input terminal A2, a first positive output terminal A3, a first negative output terminal A4, a first control terminal A0, an AC module resistor r1, a first P-type MOS field effect transistor T11, a first N-type MOS field effect transistor T12, a first bipolar junction transistor T13, and an AC module capacitor C1. The first control terminal A0 is electrically connected to the 220V AC drive signal receiving port P4.

[0067] The first positive input terminal A1 and the first negative input terminal A2 are electrically connected to the 24V DC power supply output module 20; the first positive input terminal A1 is electrically connected to the emitter of the first bipolar junction transistor T13, and two AC module resistors r1 are connected in parallel between the emitter and the base of the first bipolar junction transistor T13, and an AC module resistor r1 is connected in parallel between the base and the collector of the first bipolar junction transistor T13.

[0068] The base of the first bipolar junction transistor T13 is electrically connected to the source of the first P-type MOS field effect transistor T11, the collector of the first bipolar junction transistor T13 is electrically connected to the gate of the first P-type MOS field effect transistor T11, and the drain of the first P-type MOS field effect transistor T11 is electrically connected to the first positive output terminal A3.

[0069] There is an AC module resistor r1 electrically connected between the gate of the first P-type MOS field-effect transistor T11 and the first negative input terminal A2. The first negative input terminal A2 is electrically connected to the source of the first N-type MOS field-effect transistor T12. The drain of the first N-type MOS field-effect transistor T12 is electrically connected to the first negative output terminal A4. An AC module resistor r1 and an AC module capacitor C1 are connected in parallel between the gate and the source of the first N-type MOS field-effect transistor T12. The gate of the first N-type MOS field-effect transistor T12 is electrically connected to the first control terminal A0 through one of the AC module resistors.

[0070] Wherein, an AC module diode D1 is electrically connected between the source and the drain of the first P-type MOS field-effect transistor T11 and the first N-type MOS field-effect transistor T12.

[0071] Wherein, the first P-type MOS field-effect transistor T11 is a P-channel enhancement-mode metal-oxide-semiconductor field-effect transistor (Metal-Oxide-Semiconductor Field-Effect-Transistor, MOSFET), and the first N-type MOS field-effect transistor T12 is an N-channel enhancement-mode MOS field-effect transistor.

[0072] Wherein, the first bipolar junction transistor T13 (Bipolar Junction Transistor, BJT) is a PNP-type BJT.

[0073] In an alternative embodiment of the present application, as Figure 5 shown, the 12V DC voltage conversion module 52 includes a first voltage conversion chip of model KUB48-QB-10A; the control terminal of the first voltage conversion chip is the second control terminal Ctrl, and the second control terminal Ctrl is electrically connected to the 12V DC drive signal receiving port P5; the positive input terminal and the negative input terminal of the first voltage conversion chip are the second positive input terminal +Vin and the second negative input terminal -Vin respectively; the second positive input terminal +Vin and the second negative input terminal -Vin are electrically connected to the 24V DC power supply output module 20; the positive output terminal and the negative output terminal of the first voltage conversion chip are the second positive output terminal +Vo and the second negative output terminal -Vo respectively, and the second negative output terminal is grounded.

[0074] Wherein, the KUB48-QB-10A series of products have an output current of 10A, a wide input voltage range, an efficiency as high as 97%, an allowable operating temperature of -40°C to 85°C, and functions of input undervoltage protection, output short-circuit protection, and output overcurrent protection, and are widely used in fields such as robots and battery-powered devices.

[0075] In an alternative embodiment of the present application, as Figure 6As shown in the figure, the 5V DC voltage conversion module 53 includes a second voltage conversion chip with the model number VRB-LD-30WR3; the control terminal of the second voltage conversion chip is the third control terminal Ctrl, and the third control terminal Ctrl is electrically connected to the 5V DC drive signal receiving port P7; the positive input terminal and the negative input terminal of the second voltage conversion chip are the third positive input terminal +Vin and the third negative input terminal -Vin respectively; the third positive input terminal +Vin and the third negative input terminal -Vin are electrically connected to the 24V DC power supply output module 20, and the third input terminal -Vin is grounded; the positive output terminal and the negative output terminal of the second voltage conversion chip are the third positive output terminal +Vo and the third negative output terminal -Vo respectively, and the third output terminal -Vo is grounded.

[0076] Among them, the VRB-LD-30WR3 series of products has an output power of 30W, a 2:1 wide voltage input range, an efficiency as high as 90%, a conventional isolation voltage of 1500VDC, an allowable operating temperature of -40°C to 80°C, and has functions of output short-circuit protection, output overvoltage protection, and output overcurrent protection, and is widely used in data transmission equipment, battery-driven equipment, communication equipment, distributed power supply systems and other fields.

[0077] In an alternative embodiment of the present application, as Figure 7 shown, the relay drive module 40 includes a fourth positive input terminal B1, a fourth negative input terminal B2, a fourth positive output terminal B3, a fourth negative output terminal B4, a fourth control terminal B0, a relay drive module resistor r2, a second P-type MOS field effect transistor T21, a second P-type MOS field effect transistor T22, a second bipolar junction transistor T23, and a relay drive module capacitor C2.

[0078] The fourth control terminal B0 is electrically connected to the relay drive signal receiving port P0; the fourth positive input terminal B1 and the fourth negative input terminal B2 are electrically connected to the 24V DC power supply output module 20; the fourth positive output terminal B3 and the fourth negative output terminal B4 are used to control the corresponding relay.

[0079] The fourth positive input terminal B1 is electrically connected to the emitter of the second bipolar junction transistor T23. Two relay drive module resistors r2 are connected in parallel between the emitter and the base of the second bipolar junction transistor T23, and one relay drive module resistor r2 is connected in parallel between the base and the collector of the second bipolar junction transistor T23.

[0080] The base of the second bipolar junction transistor T23 is electrically connected to the source of the second P-type MOS field effect transistor T21, the collector of the second bipolar junction transistor T23 is electrically connected to the gate of the second P-type MOS field effect transistor T21, and the drain of the second P-type MOS field effect transistor T21 is electrically connected to the fourth positive output terminal B3.

[0081] There is a relay driving module resistor r2 electrically connected between the gate of the second P-type MOS field-effect transistor T21 and the fourth negative input terminal B2. The fourth negative input terminal B2 is electrically connected to the source of the second P-type MOS field-effect transistor T22. The drain of the second P-type MOS field-effect transistor T22 is electrically connected to the fourth negative output terminal B4. A relay driving module resistor r2 and a relay driving module capacitor C2 are connected in parallel between the gate and the source of the second P-type MOS field-effect transistor T22. The gate of the second N-type MOS field-effect transistor T22 is electrically connected to the fourth control terminal.

[0082] Among them, there is a relay driving module 40 diode electrically connected between the source and the drain of the second P-type MOS field-effect transistor T21 and the second P-type MOS field-effect transistor T22 respectively.

[0083] Among them, the second P-type MOS field-effect transistor T21 is a P-channel enhancement-mode MOS field-effect transistor, and the second P-type MOS field-effect transistor T22 is an N-channel enhancement-mode MOS field-effect transistor.

[0084] Among them, the second bipolar junction transistor T23 is a PNP-type BJT transistor.

[0085] In an alternative embodiment of the present application, the drive signal receiving end 10 further includes a latch enable control signal receiving port P8, and the latch enable control signal receiving port P8 is electrically connected to the enable end LE of the latch 30. It can be understood that the latch 30 is turned on under the signal control of the latch enable control signal receiving port P8. Among them, the model of the latch 30 can be 74HC573PW.

[0086] In an alternative embodiment of the present application, as Figure 8 shown, the drive signal receiving end 10 further includes relay control signal receiving ports P9 and P10; the power supply board further includes a relay control module 70; the input ends of the relay control module 70 are electrically connected to the relay control signal receiving ports P9 and P10 respectively, and the relay control module 70 is used to control the operation of the target relay 72 in the relay control module 70 according to the relay control signals received by the relay control signal receiving ports P9 and P10, so as to drive the lidar.

[0087] Among them, the relay control module 70 includes a relay control module resistor r3, a relay control module capacitor C3, a target relay 72, and a relay driver chip 71. Two signal input terminals A and B of the relay driver chip 71 are respectively electrically connected to corresponding two relay control signal receiving ports, and two signal output terminals OA and OB of the relay driver chip 71 are respectively electrically connected to two input control terminals of the target driver. Among them, the model of the relay driver chip 71 can be BL8023F, and the model of the target relay 72 can be HF3FI / 5-1HL1T.

[0088] Beneficial effects:

[0089] The present application discloses a power supply board applied to a lidar. The power supply board converts the 24V DC voltage provided by the 24V DC power supply output module 20 into the DC or AC voltage required by the lidar currently under the signal control of each voltage conversion module at the corresponding drive signal receiving port. In addition, the power supply board generates a relay control signal under the signal control of the corresponding drive signal receiving port and the power supply of the 24V DC power supply output module 20 through the relay drive module 40 to drive the corresponding relay, thereby driving the lidar in the current working mode. Since the power supply board only needs one 24V DC power supply output module 20 for power supply, it occupies less space and is beneficial to the overall integration of the power supply circuit.

[0090] Each embodiment in the present application is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the differences between each embodiment and other embodiments are emphasized. In particular, for the embodiments of devices, equipment, and media, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments, and will not be elaborated here one by one.

[0091] So far, specific embodiments of the present subject matter have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions recited in the claims may be performed in a different order and still achieve the desired result. Additionally, the processes depicted in the figures do not necessarily require the particular order or sequential order shown to achieve the desired result. In certain embodiments, multitasking and parallel processing may be advantageous.

[0092] In various embodiments of the present disclosure, the expressions "first", "second", "the first", or "the second" used may modify various components regardless of order and / or importance, but these expressions do not limit the corresponding components. The above expressions are only configured for the purpose of distinguishing an element from other elements. For example, a first user device and a second user device represent different user devices, although both are user devices. For example, without departing from the scope of the present disclosure, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element.

[0093] When an element (e.g., the first element) is referred to as "(operatively or communicatively) coupled" or "(operatively or communicatively) coupled to" another element (e.g., the second element) or "connected to" another element (e.g., the second element), it should be understood that the one element is directly connected to the other element or the one element is indirectly connected to the other element via yet another element (e.g., the third element). Conversely, it can be understood that when an element (e.g., the first element) is referred to as "directly connected" or "directly coupled" to another element (the second element), then no element (e.g., the third element) is inserted between the two.

[0094] The above description is only an alternative embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, a technical solution formed by mutually replacing the above features with (but not limited to) technical features having similar functions disclosed in the present application.

[0095] The above is only an alternative embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A power supply board applied to a lidar, characterized in that, it includes: a power supply module, a drive signal receiving end, a 24V DC power output module, a latch, a relay drive module, and multiple voltage conversion modules; The power supply module is used to supply power to the latch on the power supply board; The drive signal receiving end includes multiple drive signal receiving ports, and the number of the drive signal receiving ports is the same as the number of the voltage conversion modules; each of the drive signal receiving ports is electrically connected to each input end of the latch, and each output end of the latch is electrically connected to the control end of the corresponding voltage conversion module or the relay drive module; The voltage input ends of each of the voltage conversion modules are all electrically connected to the output end of the 24V DC power output module, and are used to convert the output voltage of the 24V DC power output module into a corresponding target voltage to supply power to the lidar under the control of the control end; The voltage input ends of each of the relay drive modules are all electrically connected to the output end of the 24V DC power output module, and are used to generate a relay control signal under the control of the control end to drive the corresponding relay so as to drive the lidar; The drive signal receiving end includes: a 12V DC drive signal receiving port, a 5V DC drive signal receiving port, a 220V AC drive signal receiving port, and a relay drive signal receiving port; The voltage conversion module includes a 220V AC voltage conversion module, a 12V DC voltage conversion module, and a 5V DC voltage conversion module; The 220V AC voltage conversion module includes a first positive input end, a first negative input end, a first positive output end, a first negative output end, a first control end, an AC module resistor, a first P-type MOS field effect transistor, a first N-type MOS field effect transistor, a first bipolar junction transistor, and an AC module capacitor; The first control end is electrically connected to the 220V AC drive signal receiving port; the first positive input end and the first negative input end are electrically connected to the 24V DC power output module; The first positive input end is electrically connected to the emitter of the first bipolar junction transistor, and two of the AC module resistors are connected in parallel between the emitter and the base of the first bipolar junction transistor, and one of the AC module resistors is connected in parallel between the base and the collector of the first bipolar junction transistor; The base of the first bipolar junction transistor is electrically connected to the source of the first P-type MOS field effect transistor, the collector of the first bipolar junction transistor is electrically connected to the gate of the first P-type MOS field effect transistor, and the drain of the first P-type MOS field effect transistor is electrically connected to the first positive output end; An AC module resistor is electrically connected between the gate of the first P-type MOS field-effect transistor and the first negative input terminal. The first negative input terminal is electrically connected to the source of the first N-type MOS field-effect transistor. The drain of the first N-type MOS field-effect transistor is electrically connected to the first negative output terminal. An AC module resistor and an AC module capacitor are connected in parallel between the gate and the source of the first N-type MOS field-effect transistor. The gate of the first N-type MOS field-effect transistor is electrically connected to the first control terminal through an AC module resistor.

2. The power supply board for lidar according to claim 1, characterized in that, the 12V DC voltage conversion module includes a first voltage conversion chip with the model number KUB48-QB-10A; the control terminal of the first voltage conversion chip is the second control terminal, and the second control terminal is electrically connected to the 12V DC drive signal receiving port; the positive input terminal and the negative input terminal of the first voltage conversion chip are the second positive input terminal and the second negative input terminal respectively; the second positive input terminal and the second negative input terminal are electrically connected to the 24V DC power supply output module; the positive output terminal and the negative output terminal of the first voltage conversion chip are the second positive output terminal and the second negative output terminal respectively, and the second negative output terminal is grounded.

3. The power supply board for lidar according to claim 1, characterized in that, the 5V DC voltage conversion module includes a second voltage conversion chip with the model number VRB-LD-30WR3; the control terminal of the second voltage conversion chip is the third control terminal, and the third control terminal is electrically connected to the 5V DC drive signal receiving port; the positive input terminal and the negative input terminal of the second voltage conversion chip are the third positive input terminal and the third negative input terminal respectively; the third positive input terminal and the third negative input terminal are electrically connected to the 24V DC power supply output module; the positive output terminal and the negative output terminal of the second voltage conversion chip are the third positive output terminal and the third negative output terminal respectively, and the third negative output terminal is grounded.

4. The power supply board for lidar according to claim 1, characterized in that, the relay drive module includes a fourth positive input terminal, a fourth negative input terminal, a fourth positive output terminal, a fourth negative output terminal, a fourth control terminal, a relay drive module resistor, a second P-type MOS field-effect transistor, a second N-type MOS field-effect transistor, a second bipolar junction transistor and a relay drive module capacitor; the fourth control terminal is electrically connected to the relay drive signal receiving port; the fourth positive input terminal and the fourth negative input terminal are electrically connected to the 24V DC power supply output module; the fourth positive output terminal and the fourth negative output terminal are used to control the corresponding relay; the fourth positive input terminal is electrically connected to the emitter of the second bipolar junction transistor. Two relay drive module resistors are connected in parallel between the emitter and the base of the second bipolar junction transistor. One relay drive module resistor is connected in parallel between the base and the collector of the second bipolar junction transistor; The base of the second bipolar junction transistor is electrically connected to the source of the second P-type MOS field effect transistor, the collector of the second bipolar junction transistor is electrically connected to the gate of the second P-type MOS field effect transistor, and the drain of the second P-type MOS field effect transistor is electrically connected to the fourth positive output terminal; A relay drive module resistor is electrically connected between the gate of the second P-type MOS field effect transistor and the fourth negative input terminal. The fourth negative input terminal is electrically connected to the source of the second N-type MOS field effect transistor. The drain of the second N-type MOS field effect transistor is electrically connected to the fourth negative output terminal. A relay drive module resistor and a relay drive module capacitor are connected in parallel between the gate and the source of the second N-type MOS field effect transistor, and the gate of the second N-type MOS field effect transistor is electrically connected to the fourth control terminal.

5. The power supply board for lidar according to claim 1, characterized in that, The drive signal receiving end further includes a latch enable control signal receiving port, and the latch enable control signal receiving port is electrically connected to the enable end of the latch.

6. The power supply board for lidar according to claim 1, characterized in that, The drive signal receiving end further includes a relay control signal receiving port; the power supply board further includes a relay control module; The input end of the relay control module is electrically connected to the relay control signal receiving port, and the relay control module is used to control the operation of the target relay in the relay control module according to the relay control signal received by the relay control signal receiving port, so as to drive the lidar.

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