Direct-current diesel locomotive microcomputer

Abstract

The utility model relates to the field of microcomputers, in particular to a direct-current diesel locomotive microcomputer. The microcomputer comprises a CPU control board and a power board, the CPU control board is electrically connected with the power board, and the CPU control board is electrically connected with a communication board, a CAN board, a digital quantity input board, a digital quantity output board, an analog quantity input and output board, an analog quantity processing board, a frequency processing board, a temperature signal processing board and a high-voltage excitation acquisition board. According to the utility model, the high-voltage excitation plate acquisition plate is adopted to output excitation current, so that the cost of the locomotive is reduced, and the operation reliability of the locomotive is improved.

Description

Technical Field

[0001] The utility model relates to the field of microcomputers, in particular to a DC internal combustion locomotive microcomputer. Background Art

[0002] The main excitation and auxiliary excitation of traditional DC transmission locomotives are controlled by excitation modules or excitation motors. In order to achieve real-time control of magnetic excitation, traditional locomotives mostly need to be equipped with excitation current sensors, which transmit the real-time magnetic excitation current to the microcomputer to achieve closed-loop control. This not only increases the cost of locomotives, but also increases the maintenance work, which is a major risk point affecting the quality of locomotives. Utility Model Content

[0003] In order to overcome the deficiency that the existing locomotive needs to be equipped with an excitation current sensor to realize real-time control of magnetic excitation, the utility model provides a DC internal combustion locomotive microcomputer.

[0004] The utility model solves the technical problem by adopting the following technical solution: a DC internal combustion locomotive microcomputer comprises a CPU control board and a power board, wherein the CPU control board is electrically connected to the power board, and the CPU control board is electrically connected to a communication board, a CAN board, a digital quantity input board, a digital quantity output board, an analog quantity input and output board, an analog quantity processing board, a frequency processing board, a temperature signal processing board, and a high-voltage excitation acquisition board.

[0005] According to another embodiment of the utility model, the CPU control board, power board, communication board, CAN board, digital input board, digital output board, analog input and output board, analog processing board, frequency processing board, temperature signal processing board, and high-voltage excitation acquisition board are further included and electrically connected and installed in a microcomputer housing, and a plurality of card slots are arranged in sequence on the microcomputer housing.

[0006] According to another embodiment of the utility model, the communication board is further included as an RS485 communication board, the communication board is installed in the leftmost card slot in the microcomputer housing, and two Ethernet interfaces are provided on the communication board.

[0007] According to another embodiment of the utility model, the power board is further installed in the rightmost card slot in the microcomputer housing.

[0008] According to another embodiment of the utility model, the digital quantity input board is further provided with a 110V DC level and 16 digital quantity input channels.

[0009] According to another embodiment of the utility model, the digital output board further includes a 110V DC level, and has 8 digital input channels, of which 6 are transistor type and 2 are relay type.

[0010] According to another embodiment of the utility model, the analog input and output board further includes 4 differential analog input channels, 2 single-ended analog input channels, 2 PT100 temperature acquisition channels, 4 single-ended analog output channels, +15V and +24V power outputs, and a maximum total power of 18W.

[0011] According to another embodiment of the utility model, the frequency processing board further comprises 12 frequency acquisition channels and 1 0-5V PWM speed regulation signal.

[0012] According to another embodiment of the utility model, the temperature signal processing board further comprises 12 resistance-type temperature signal acquisition channels and 2 0-20mA current outputs.

[0013] According to another embodiment of the utility model, the high voltage excitation acquisition board further includes 8 high voltage acquisition channels, 2 PWM outputs, and a maximum continuous current of 6A.

[0014] The beneficial effect of the utility model is that the utility model outputs the excitation current by adopting the high-voltage excitation plate collection plate, which not only reduces the cost of the locomotive, but also improves the reliability of the locomotive operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural block diagram of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a microcomputer housing of the utility model;

[0018] In the figure, 1. CPU control board, 2. power board, 3. communication board, 4. CAN board, 5. digital input board, 6. digital output board, 7. analog input and output board, 8. analog processing board, 9. frequency processing board, 10. temperature signal processing board, 11. high voltage excitation acquisition board, 12. microcomputer housing. DETAILED DESCRIPTION

[0019] Figure 1 It is a structural block diagram of the utility model; Figure 2 It is a structural schematic diagram of a microcomputer housing of the utility model.

[0020] As attached Figure 1As shown, a DC diesel locomotive microcomputer includes a CPU control board 1 and a power board 2. The CPU control board 1 is electrically connected to the power board 2. The CPU control board 1 is electrically connected to a communication board 3, a CAN board 4, a digital input board 5, a digital output board 6, an analog input and output board 7, an analog processing board 8, a frequency processing board 9, a temperature signal processing board 10, and a high-voltage excitation acquisition board 11.

[0021] As attached Figure 2 As shown, the CPU control board 1, the power board 2, the communication board 3, the CAN board 4, the digital input board 5, the digital output board 6, the analog input and output board 7, the analog processing board 8, the frequency processing board 9, the temperature signal processing board 10, and the high-voltage excitation acquisition board 11 are all electrically connected and installed in a microcomputer housing 12, and a number of card slots are arranged in sequence on the microcomputer housing 12.

[0022] The communication board 3 is an RS485 communication board, which is installed in the leftmost card slot in the microcomputer housing 12. The communication board 3 is provided with two Ethernet interfaces, an adaptive mechanism, supports full-duplex and half-duplex working modes, complies with the IEEE 802.3 standard, and supports standard Ethernet communication protocols such as TCP, UDP, and TRDP. It has the ability to communicate with the backplane bus master device.

[0023] The power board 2 is installed in the rightmost card slot in the microcomputer housing 12. It has input overvoltage, undervoltage, short circuit protection; output overvoltage, overcurrent, short circuit protection; output overvoltage, undervoltage alarm output function.

[0024] The digital input board 5 is 110V DC level, has 16 digital input channels, and supports full "1" self-test.

[0025] Digital output board 6 is 110V DC level, with 8 digital input channels, 6 of which are transistor type with feedback and overcurrent protection functions. 2 are relay type with normally open and normally closed contacts.

[0026] The analog input and output board 7 has 4 differential analog input channels, 2 single-ended analog input channels, 2 PT100 temperature acquisition channels, 4 single-ended analog output channels, +15V and +24V power outputs, and a maximum total power of 18W.

[0027] The frequency processing board 9 has 12 frequency acquisition channels and 1 0-5V PWM speed regulation signal.

[0028] The temperature signal processing board 10 has 12 resistance-type temperature signal acquisition channels and 2 0-20mA current outputs.

[0029] The high voltage excitation acquisition board 11 has 8 high voltage acquisition channels, 2 PWM outputs, and a maximum continuous current of 6A.

Claims

1. A DC diesel locomotive microcomputer, comprising a CPU control board (1) and a power board (2), wherein the CPU control board (1) and the power board (2) are electrically connected, and wherein: The CPU control board (1) is electrically connected to the communication board (3), the CAN board (4), the digital quantity input board (5), the digital quantity output board (6), the analog quantity input and output board (7), the analog quantity processing board (8), the frequency processing board (9), the temperature signal processing board (10), and the high-voltage excitation acquisition board (11).

2. The DC diesel locomotive microcomputer according to claim 1 is characterized in that: The CPU control board (1), the power board (2), the communication board (3), the CAN board (4), the digital input board (5), the digital output board (6), the analog input and output board (7), the analog processing board (8), the frequency processing board (9), the temperature signal processing board (10), and the high-voltage excitation acquisition board (11) are all electrically connected and installed in a microcomputer housing (12). The microcomputer housing (12) is provided with a plurality of card slots arranged in sequence.

3. The DC diesel locomotive microcomputer according to claim 2 is characterized in that: The communication board (3) is an RS485 communication board. The communication board (3) is installed in the leftmost card slot in the microcomputer housing (12). Two Ethernet interfaces are provided on the communication board (3).

4. The DC diesel locomotive microcomputer according to claim 2 is characterized in that: The power board (2) is installed in the rightmost slot in the microcomputer housing (12).

5. The DC diesel locomotive microcomputer according to claim 1 is characterized in that: The digital quantity input board (5) is of 110V DC level and has 16 digital quantity input channels.

6. The DC diesel locomotive microcomputer according to claim 1, characterized in that: The digital quantity output board (6) is of 110V DC level and has 8 digital quantity input channels, of which 6 are of transistor type and 2 are of relay type.

7. The DC diesel locomotive microcomputer according to claim 1 is characterized in that: The analog input and output board (7) has 4 differential analog input channels, 2 single-ended analog input channels, 2 PT100 temperature acquisition channels, 4 single-ended analog output channels, +15V and +24V power outputs, and a maximum total power of 18W.

8. The DC diesel locomotive microcomputer according to claim 1 is characterized in that: The frequency processing board (9) has 12 frequency acquisition channels and 1 0-5V PWM speed regulation signal.

9. The DC diesel locomotive microcomputer according to claim 1, characterized in that: The temperature signal processing board (10) has 12 resistance-type temperature signal acquisition channels and 2 0-20 mA current outputs.

10. The DC diesel locomotive microcomputer according to claim 1, characterized in that: The high-voltage excitation acquisition board (11) has 8 high-voltage acquisition channels, 2 PWM outputs, and a maximum continuous current of 6A.

Images