Power driving device of air conditioner control module of rail transit vehicle

Abstract

The utility model relates to a power supply driving device of an air conditioner control module of a rail transit vehicle, which inputs a power supply of the air conditioner control module, comprises a reference voltage unit, a feedback circuit unit, a chip U2, a chip U3 and a photoelectric coupler U4, and is characterized by comprising a connector H1, an amplification circuit unit and an oscillation circuit unit, the first pin of the connector H1 is connected with the chip U1, the input end of the second pin of the connector H1 is connected with a power panel of the air conditioner control module, the output end of the second pin of the connector H1 is connected with the chip U2, the chip U3 and the photoelectric coupler U4, the output end of the amplifying circuit unit is connected with the connector H1, and the input end of the amplifying circuit unit is connected to the photoelectric coupler U4. And the oscillation circuit unit is respectively connected with a pin 11 of the connector H1 and a pin 12 of the connector H1. Compared with the prior art, the utility model has the advantages that the power supply driving board works more stably, the production cost is low, the maintenance is convenient, the service life is long and the like.

Description

Technical Field

[0001] The utility model relates to the field of rail transit vehicle air conditioning control, in particular to a power source driving device of a rail transit vehicle air conditioning control module. Background Art

[0002] In the rail transit vehicle air conditioning control system, sensors collect vehicle parameters such as temperature, humidity, dust concentration and air flow velocity. The rail transit vehicle air conditioning control module 681H672 has the main function of processing the information collected by the sensor and forwarding the information to the main control unit of the train information management system (MPU).

[0003] The vehicle air conditioning control module 681H672 includes a power board, a CPU board, a power driver board, a communication board, a control board, and a digital-to-analog conversion board. In the actual maintenance process, it was found that the failure of the vehicle air conditioning control module 681H672 mainly occurred in the power driver board. The power driver board could not supply power normally, causing the entire cabin air conditioning to not work properly.

[0004] How to achieve stable operation of the power driver board of the rail transit vehicle air-conditioning control module has become a technical problem that needs to be solved. Utility Model Content

[0005] The purpose of the utility model is to provide a power drive device for an air conditioning control template of a rail transit vehicle in order to overcome the defects of the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] According to one aspect of the utility model, a power supply driving device for an air conditioning control module of a rail transit vehicle is provided, wherein the input is the power supply of the air conditioning control module, the device comprises a reference voltage unit, a feedback circuit unit, a chip U2, a chip U3 and a photoelectric coupler U4, wherein the device comprises a connector H1, an amplifying circuit unit and an oscillating circuit unit,

[0008] Pin 1 of the connector H1 is connected to chip U1.

[0009] The input end of the 2nd pin of the connector H1 is connected to the power board of the air conditioning control module, and the output end is connected to the chip U2, the chip U3 and the photoelectric coupler U4.

[0010] The output end of the amplifier circuit unit is connected to the connector H1, and the input end is connected to the photoelectric coupler U4.

[0011] The oscillation circuit unit is connected to the 11th pin of the connector H1 and the 12th pin of the connector H1 respectively.

[0012] Preferably, the amplifier circuit unit comprises a resistor R13 and a chip U2, and the output end of the amplifier circuit unit is connected to pin 2 of the connector H1 and pin 3 of the connector H1.

[0013] Preferably, the pin 1 connection chip U1 of the connector H1 is specifically:

[0014] Pin 1 of connector H1 is connected to the VIN pin of chip U1.

[0015] The 14th pin of the connector H1 is connected to the OUTPUTA pin of the chip U1.

[0016] Pin 15 of the connector H1 is connected to the GROUND pin of the chip U1.

[0017] More preferably, pin 1 of the connector H1 is a pin with an output voltage of DC25V.

[0018] More preferably, the pin 14 of the connector H1 is a pin for outputting a pulse voltage of ±DC 0.8V.

[0019] Preferably, the oscillation circuit unit includes a resistor R10, a capacitor C6, a capacitor C7, a diode D1 and a resistor R9, and the oscillation circuit unit is connected to the pin 11 of the connector H1 and the pin 12 of the connector H1 respectively.

[0020] Preferably, the photocoupler U4 is connected to the chip U1 and the reference voltage unit respectively.

[0021] Preferably, the output of pin 2 of the connector H1 is DC22V.

[0022] Preferably, pin 11 of the connector H1 is an RT input, and pin 12 of the connector H1 is a CT input.

[0023] Preferably, the reference voltage unit includes a resistor R14, a resistor R12 and a chip U3, and the reference voltage unit is connected to pin 2 of the connector H1 and pin 4 of the chip U2 respectively.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] 1. The input end of pin 2 of the connector H1 of the utility model is connected to the power board of the air-conditioning control module to supply power to the chip U1, the chip U2, the chip U3 and the photocoupler U4. The reference voltage unit makes the power drive board work more stably.

[0026] 2. The plate material of the utility model is changed from ceramic to glass fiber reinforced epoxy resin, and all components are externally welded, which has low production cost and is easy to maintain.

[0027] 3. The utility model solves the problem that the original model is about to be discontinued and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the vehicle air conditioning control module 681H67 in the utility model;

[0029] Figure 2 It is a structural diagram of the vehicle air conditioning control module 681H67;

[0030] Attached Figure 1 In the figure, 1: power driver board, 2: CPU board, 3: communication board, 4: control board, 5: digital-to-analog conversion board, 6: power board. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0032] like Figure 1 As shown, the vehicle air conditioning control module 681H672 includes a power board 6, a CPU board 2, a power drive board 1, a communication board 3, a control board 4 and a digital-to-analog conversion board 5, wherein the CPU board 2 is respectively connected to the power board 6, the communication board 3, the control board 4 and the digital-to-analog conversion board 5, the power board 6 is connected to the power drive board 1, and the communication board is connected to the control board. The utility model improves the power drive board 1, so other boards are not described here.

[0033] This embodiment relates to a power drive device for an air conditioning control module of a rail transit vehicle, the input of which is the power supply of the air conditioning control module, such as Figure 2 As shown, the device includes a connector H1, a reference voltage unit, a feedback circuit unit, a chip U2, a chip U3 and a photocoupler U4.

[0034] The device also includes an amplifying circuit unit and an oscillating circuit unit, wherein pin 1 of the connector H1 is connected to the chip U1.

[0035] Pin 2 of the connector H1, pin 3 of the connector H1, resistor R13, and chip U2 form an amplifier circuit. The output end of the amplifier circuit unit is connected to the connector H1, and the input end is connected to the photocoupler U4.

[0036] The amplifier circuit unit is fed back to the photocoupler U4 via the pin 7 of the chip U2 through the resistors R15 and R16, and is integrated into the chip U1 via the photocoupler U4.

[0037] Resistor R10, capacitor C6, capacitor C7, diode D1 and resistor R9 form an oscillation circuit of RT and CT, and are connected to pins 11 and 12 of connector H1.

[0038] Pin 2 of chip U1 is connected to chip U2, chip U3 and optocoupler U4, and pin OUTPUTA of chip U1 is connected to pin 14 of connector H1.

[0039] The reference voltage unit includes a resistor R14, a resistor R12 and a chip U3, and the reference voltage unit is connected to pin 2 of the connector H1 and pin 4 of the chip U2 respectively.

[0040] Pin 1 of connector H1 supplies DC25V to the VIN pin of chip U1, so that chip U1 outputs a pulse signal to pin 14 of connector H1 for driving the MOS tube.

[0041] Pin 2 of connector H1 is a power pin, the input end is connected to the power board of the air conditioning control module, the output end is connected to chip U2, chip U3 and photocoupler U4, and supplies power to chip U2, chip U3 and photocoupler U4.

[0042] Pin 2 of the connector H1 is used for power supply, and the DC22V power supply is supplied to the chip U2, the chip U3 and the photocoupler U4, wherein the chip U2, the chip U3 and the photocoupler U4 form a feedback circuit.

[0043] Pin 2 of connector H1, resistor R14, resistor R12 and chip U3 form a reference voltage, and are connected to pin 4 of chip U2. The reference voltage makes the power driver board work more stably.

[0044] Pins 2-6 of connector H1 form a feedback circuit, and pins 1 and 7-15 of connector H1 form an output pulse signal.

[0045] Pin 11 of connector H1 is RT input, and pin 12 of connector H1 is CT input.

[0046] Pin 15 of connector H1 is connected to the GROUND pin of chip U1 to achieve grounding.

[0047] The OUTPUTA pin of chip U1 outputs a pulse signal to pin 14 of connector H1, and pin 14 of connector H1 outputs a pulse voltage of ±DC0.8V.

[0048] Chip U2, chip U3 and photocoupler U4 form a feedback circuit.

[0049] Chip U3 is a reference voltage stabilizing circuit, which stabilizes the voltage at DC2.5V.

[0050] The chip U2 adjusts the output size of the chip U2 pin 6 through the pin 4 of the connector H1 through the pull-down resistor R13, adjusts the output size of the photocoupler U4 through R15 and R16, and adjusts the output frequency of the chip U1.

[0051] The operating temperature of the power driver is -40℃ / +85℃, and the no-load power consumption is 12mA.

[0052] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A power driving device for an air conditioning control module of a rail transit vehicle, the input of which is the power supply of the air conditioning control module, the device comprises a reference voltage unit, a feedback circuit unit, a chip U2, a chip U3 and a photocoupler U4, characterized in that: The device comprises a connector H1, an amplifying circuit unit and an oscillating circuit unit. Pin 1 of the connector H1 is connected to chip U1. The input end of the 2nd pin of the connector H1 is connected to the power board of the air conditioning control module, and the output end is connected to the chip U2, the chip U3 and the photoelectric coupler U4. The output end of the amplifier circuit unit is connected to the connector H1, and the input end is connected to the photoelectric coupler U4. The oscillation circuit unit is connected to the 11th pin of the connector H1 and the 12th pin of the connector H1 respectively.

2. The power drive device of the rail transit vehicle air conditioning control module according to claim 1, characterized in that: The amplifier circuit unit comprises a resistor R13 and a chip U2, and the output end of the amplifier circuit unit is connected to pin 2 of the connector H1 and pin 3 of the connector H1.

3. The power drive device of the rail transit vehicle air conditioning control module according to claim 1, characterized in that: The pin 1 of the connector H1 is connected to the chip U1 as follows: Pin 1 of connector H1 is connected to the VIN pin of chip U1. The 14th pin of the connector H1 is connected to the OUTPUTA pin of the chip U1. Pin 15 of the connector H1 is connected to the GROUND pin of the chip U1.

4. The power drive device of the rail transit vehicle air conditioning control module according to claim 3, characterized in that: Pin 1 of the connector H1 is a pin for outputting a voltage of DC25V.

5. The power drive device of the rail transit vehicle air conditioning control module according to claim 3, characterized in that: Pin 14 of the connector H1 is a pin for outputting a pulse voltage of ±DC 0.8V.

6. The power drive device of the rail transit vehicle air conditioning control module according to claim 1, characterized in that: The oscillation circuit unit includes a resistor R10, a capacitor C6, a capacitor C7, a diode D1 and a resistor R9, and the oscillation circuit unit is connected to the 11th pin of the connector H1 and the 12th pin of the connector H1 respectively.

7. The power drive device of the rail transit vehicle air conditioning control module according to claim 1, characterized in that: The photocoupler U4 is connected to the chip U1 and the reference voltage unit respectively.

8. The power drive device of the rail transit vehicle air conditioning control module according to claim 1, characterized in that: The output of pin 2 of the connector H1 is DC22V.

9. The power drive device of the rail transit vehicle air conditioning control module according to claim 1, characterized in that: Pin 11 of the connector H1 is the RT input, and pin 12 of the connector H1 is the CT input.

10. The power drive device of the rail transit vehicle air conditioning control module according to claim 1, characterized in that: The reference voltage unit includes a resistor R14, a resistor R12 and a chip U3, and the reference voltage unit is connected to pin 2 of the connector H1 and pin 4 of the chip U2 respectively.

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