Laser radar temperature control device

Abstract

The utility model belongs to the technical field of laser radars, and particularly relates to a laser radar temperature control device. The temperature control device comprises an evaporator module, a radiator module, a water pump management module and a control module; the evaporator module is arranged close to a heat source of the laser radar, and the evaporator module is connected with the water pump management module; the radiator module is connected with the water pump management module and is used for cooling the cooling liquid in the water pump management module; the control module is connected with the water pump management module and used for adjusting the flow speed of cooling liquid in the water pump management module according to the temperature of the heat source. According to the utility model, the temperature of the laser radar can be effectively controlled.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser radars, and in particular relates to a temperature control device for a laser radar. Background Art

[0002] Laser radar uses laser as light source and senses the atmosphere by detecting the radiation signal of the interaction between laser and atmosphere. The interaction between laser and atmosphere will produce radiation signals including optical, physical and chemical information of atmospheric components such as gas atoms, air molecules, atmospheric aerosol particles and clouds. The relevant information of atmospheric components can be obtained from the radiation signal by using the corresponding inversion method. At present, most of the lasers used in laser radars on the market are YAG solid lasers. Solid lasers are mainly composed of five parts: working material, pumping system, focusing system, optical resonant cavity and cooling system. The cooling system is embedded in the laser. In the actual working process, the temperature control of the laser by the cooling system mainly depends on the ambient temperature of the laser. When the ambient temperature is too high, the cooling system cannot dissipate heat and stops working. In laser radar, not only the laser is very sensitive to the ambient temperature, but also the industrial computer and acquisition card will also affect the working effect due to the change of ambient temperature. Therefore, it is very important to control the working temperature of laser radar. Now there is an urgent need for a laser radar temperature control device. Utility Model Content

[0003] The utility model proposes a laser radar temperature control device, and the specific scheme is as follows:

[0004] The temperature control device includes an evaporator module, a radiator module, a water pump management module and a control module;

[0005] The evaporator module is arranged close to the heat source of the laser radar, and the evaporator module is connected to the water pump management module;

[0006] The radiator module is connected to the water pump management module and is used to cool the coolant in the water pump management module;

[0007] The control module is connected to the water pump management module and is used to adjust the flow rate of the coolant in the water pump management module according to the temperature of the heat source.

[0008] Further, the radiator module includes a heat sink, a Peltier, a heat sink fan and a heat sink plate;

[0009] The heat sink is connected to the water pump management module, and the cold surface of the Peltier is connected and fixed to the heat sink via a heat conducting medium;

[0010] The hot surface of the Peltier is connected and fixed to the heat sink plate through a heat conducting medium, and the heat dissipation fan is fixedly installed in front of the heat sink plate.

[0011] Furthermore, the control module includes a PWM control board, which is connected to the Peltier and the cooling fan and is used to adjust the rotation speed of the cooling fan and the power of the Peltier in real time according to the temperature of the evaporator module.

[0012] Further, the water pump management module includes a water pump, a filtered water storage tank and a water circulation unit;

[0013] The water circulation unit is connected to the filtered water storage tank and the water pump in sequence;

[0014] The water circulation unit is in communication with the evaporator module.

[0015] Furthermore, the control module includes a PWM control board, which is connected to the water pump and is used to adjust the power of the water pump in real time according to the temperature of the evaporator module.

[0016] Furthermore, the heat sink plate is made of a material with high thermal conductivity.

[0017] Furthermore, the heat sink plate is composed of one or more elements selected from the group consisting of copper, silver, gold, tungsten and molybdenum.

[0018] Furthermore, the temperature control device also includes a temperature sensor, which is connected to the control module and is used to obtain the real-time temperature of the heat source and transmit it to the control module.

[0019] The beneficial effect of the utility model is that: by using Peltier in the radiator module to realize heat conversion, the temperature of the evaporation plate 1 is reduced, the temperature of the main heating components of the radar is controlled, and the radar is ensured to operate at a normal temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A structural diagram of a laser radar temperature control device proposed in the utility model.

[0021] In the figure: 1. Evaporator module; 2. Radiator module; 3. Peltier; 4. Cooling fan; 5. Water pump; 6. Filter water storage tank; 7. PWM control board; 8. Heat source; 9. Heat sink board. DETAILED DESCRIPTION

[0022] like Figure 1 As shown, a laser radar temperature control device comprises an evaporator module 1, a radiator module 2, a water pump management module and a control module;

[0023] The evaporator module 1 is arranged close to the heat source 8 of the laser radar, and the evaporator module 1 is connected to the water pump management module;

[0024] The radiator module 2 is connected to the water pump management module and is used to cool the coolant in the water pump management module;

[0025] The control module is connected to the water pump management module and is used to adjust the flow rate of the coolant in the water pump management module according to the temperature of the heat source 8.

[0026] Specifically, the radiator module 2 is close to the heat source 8 of the laser radar, and the heat exchange with the heat source 8 is realized through the radiator module 2. The evaporator module 1 is connected to the water pump management module, and the water pump management module cools the radiator module 2 through the coolant to maintain the constant temperature of the radiator module 2 and prevent the radiator module 2 from overheating. The water pump management module is connected to the control module, and the control module has realized the temperature control of the radiator module 2 by controlling the flow rate of the coolant in the water pump management module, and indirectly realizes the temperature control of the laser radar.

[0027] Further, the radiator module includes a heat sink, a Peltier 3, a cooling fan 4 and a heat sink plate 9;

[0028] The heat sink is connected to the water pump management module, and the cold surface of the Peltier 3 is connected and fixed to the heat sink via a heat conducting medium;

[0029] The hot surface of the Peltier 3 is connected and fixed to the heat sink plate 9 via a heat conducting medium, and the heat dissipation fan 4 is fixedly installed in front of the heat sink plate 9 .

[0030] Specifically, the heat sink is connected to the water pump management module, and there is a water circulation pipeline in the heat sink, and the coolant in the water pump management module flows through the water circulation pipeline. The cold surface of the Peltier 3 is connected and fixed to the heat sink through a heat conducting medium, and the heat of the heat sink is taken away by the Peltier 3, and the heat is transferred to the Susong heat sink plate 9 through the hot surface of the Peltier 3. The heat sink plate 9 dissipates heat through a cooling fan, and finally dissipates the heat into the air.

[0031] Furthermore, the control module includes a PWM control board 7 , which is connected to the Peltier 3 and the cooling fan 4 , and is used to adjust the rotation speed of the cooling fan 4 and the power of the Peltier 3 in real time according to the temperature of the evaporator module 1 .

[0032] Specifically, the power of Peltier 3 is controlled by PWM control board 7, that is, the heat conduction rate of Peltier 3 can be controlled, that is, the heat dissipation efficiency of the entire lidar can be controlled. By controlling the speed of the cooling fan, the heat dissipation of Peltier 3 is matched to avoid damage to Peltier 3 due to untimely heat dissipation. Preferably, in order to improve the heat dissipation efficiency of the entire temperature control system, the heat sink plate 9 is made of a material with high thermal conductivity. Exemplarily, the heat sink plate 9 is composed of one or more elements of copper, silver, gold, tungsten and molybdenum.

[0033] Further, the temperature control device also includes a temperature sensor, which is connected to the control module and is used to obtain the real-time temperature of the heat source 8 and transmit it to the control module. The temperature sensor is arranged near the heat source 8 and is used to collect the real-time temperature of the heat source 8 and transmit the real-time temperature to the control module. When the temperature of the heat source 8 collected by the temperature sensor is higher than the predetermined temperature, the control unit controls the radiator module to work; when the temperature of the heat source 8 collected by the temperature sensor does not exceed the predetermined temperature, the control unit controls the radiator module to stop working. Further, the control unit calculates the real-time temperature, and when the real-time temperature of the heat source 8 is higher than the predetermined value and is still in the rising stage, the control unit controls the radiator module to increase the heat dissipation power. When the real-time temperature of the heat source 8 is higher than the predetermined value, but the real-time temperature of the heat source 8 is in the falling stage, and the rate of decrease is higher than the set value, for the purpose of energy saving, the radiator module is controlled to appropriately reduce the heat dissipation power.

[0034] Further, the water pump management module includes a water pump 5, a filtered water storage tank 6 and a water circulation unit;

[0035] The water circulation unit is connected to the filtered water storage tank 6 and the water pump 5 in sequence;

[0036] The water circulation unit is in communication with the evaporator module 1 and is used to remove heat from the evaporator module 1 through a coolant.

[0037] Specifically, the coolant is stored in the filter storage, and the water pump 5 serves as a power source to make the coolant flow in the water circulation unit. The water circulation unit is connected to the evaporator module 1 to take away the heat in the evaporator module 1.

[0038] It means that Figure 1 The heat source 8 is not a component of the temperature control device of the laser radar. In this embodiment, the heat source 8 is labeled for convenience of description. In this embodiment, the temperature control device is connected to the heat source part of various types of laser radars.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A laser radar temperature control device, characterized in that: The temperature control device comprises an evaporator module (1), a radiator module (2), a water pump management module and a control module; The evaporator module (1) is arranged close to the heat source (8) of the laser radar, and the evaporator module (1) is connected to the water pump management module; The radiator module (2) is connected to the water pump management module and is used to cool the coolant in the water pump management module; The control module is connected to the water pump management module and is used to adjust the flow rate of the coolant in the water pump management module according to the temperature of the heat source (8).

2. A laser radar temperature control device according to claim 1, characterized in that: The heat sink module comprises a heat dissipation plate, a Peltier (3), a heat dissipation fan (4) and a heat sink plate (9); The heat sink is connected to the water pump management module, and the cold surface of the Peltier (3) is connected and fixed to the heat sink via a heat conducting medium; The hot surface of the Peltier (3) is connected and fixed to a heat sink plate (9) via a heat conducting medium, and the heat dissipation fan (4) is fixedly mounted in front of the heat sink plate (9).

3. A laser radar temperature control device according to claim 2, characterized in that: The control module comprises a PWM control board (7), wherein the PWM control board (7) is connected to the Peltier (3) and the cooling fan (4), and is used to adjust the rotation speed of the cooling fan (4) and the power of the Peltier (3) in real time according to the temperature of the evaporator module (1).

4. A laser radar temperature control device according to claim 1, characterized in that: The water pump management module comprises a water pump (5), a filtered water storage tank (6) and a water circulation unit; The water circulation unit is connected in sequence to the filtered water storage tank (6) and the water pump (5); The water circulation unit is in communication with the evaporator module (1).

5. A laser radar temperature control device according to claim 4, characterized in that: The control module comprises a PWM control board (7), which is connected to the water pump (5) and is used to adjust the power of the water pump (5) in real time according to the temperature of the evaporator module (1).

6. A laser radar temperature control device according to claim 2, characterized in that: The heat sink plate (9) is made of a material with high thermal conductivity.

7. A laser radar temperature control device according to claim 6, characterized in that: The heat sink plate (9) is made of one or more elements selected from the group consisting of copper, silver, gold, tungsten and molybdenum.

8. A laser radar temperature control device according to any one of claims 1 to 7, characterized in that: The temperature control device also includes a temperature sensor, which is connected to the control module and is used to obtain the real-time temperature of the heat source (8) and transmit it to the control module.

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