CN214010351U - Power supply environment test device for electronic odometer of subway vehicle - Google Patents
Power supply environment test device for electronic odometer of subway vehicle Download PDFInfo
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- CN214010351U CN214010351U CN202120355639.7U CN202120355639U CN214010351U CN 214010351 U CN214010351 U CN 214010351U CN 202120355639 U CN202120355639 U CN 202120355639U CN 214010351 U CN214010351 U CN 214010351U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a subway vehicle electronic odometer power supply environment test device, which relates to the technical field of electronic information engineering, and comprises a program control power supply unit, a resistor array unit, a main controller unit, an LCD display unit, a DC/DC converter unit and an odometer unit, wherein the input end of the program control power supply unit is connected with an input power Vin, the output end of the program control power supply unit is connected with the odometer, the input end of the program control power supply unit is also connected with the output end of the resistor array unit, the input end of the resistor array unit is connected with the main controller, data are exchanged between the main controller unit and the odometer unit through serial communication, the input power Vin is also connected with the DC/DC converter unit, through the automatic data acquisition and processing of the microprocessor, the power supply voltage fluctuation or the instantaneous power-off power supply environment is simulated, the design test process supplies power to the odometer, the method is beneficial to improving the accuracy and consistency of test data, thereby improving the working efficiency and the product quality and reducing the production and operation cost of enterprises.
Description
Technical Field
The utility model relates to an electronic information engineering technical field, concretely relates to subway vehicle electron odometer power supply environmental test device.
Background
The electronic odometer for subway train is one electronic device for railway train and must meet the requirement of IEC60571 electronic device for railway train.
1. The electronic odometer meets the power supply environment as follows:
(1) nominal voltage U1;
(2) when the voltage range is 0.7U 1-1.25U 1, the electric equipment can work normally;
(3) when the voltage fluctuation range is 0.6U1-1.4U1 and the time does not exceed 0.1s, the function of the equipment is not deviated;
(4) when the voltage fluctuation value is 1.25U1-1.4U1 and the time does not exceed 1s, the equipment is not damaged, but the function of the equipment can be incomplete;
(5) the interruption of the input voltage within 10ms does not cause any malfunction of the device.
The odometer must meet various technical requirements of standard regulations during the design, production and technical service processes. Therefore, a mileage meter test device designed according to technical requirements specified by standards is needed, so that the functional performance of a product can be effectively tested, the quality of the product is ensured, the reliability of the product is improved, and the economic benefit of an enterprise is improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a subway vehicle electron odometer power supply environment test device to solve the problem mentioned in the above-mentioned background art.
The utility model provides a subway vehicle electron odometer power supply environment test device, includes programme-controlled electrical unit, resistance array unit, main control unit, LCD display element, DC/DC converter unit and odometer unit, programme-controlled electrical unit's input and input power source Vin are connected, programme-controlled electrical unit's output and odometer unit connection, programme-controlled electrical unit's input still is connected with the output of resistance array unit, the input of resistance array unit is connected with main control unit's output, exchange data through serial communication between main control unit and the odometer unit, input power source Vin still with DC/DC converter unit connection.
Preferably, the output end of the main controller unit is further connected with an LCD display unit.
Preferably, the DC/DC converter unit provides an input power VCC to the main controller unit and the LCD display unit.
Preferably, the chip of the main controller unit is a single chip microcomputer with the model of STC12C5402 AD.
Preferably, the chip model of the DC/DC converter unit is MC 34063.
Preferably, the LCD display unit adopts a display module with a model of LCD 12864.
The utility model has the advantages that: the odometer is tested according to the technical requirements of international standard 'IEC 60571 electronic equipment for railway vehicles', the automatic data acquisition and processing of the microprocessor are used for simulating the power supply voltage fluctuation or instantaneous power failure power supply environment, the test flow is designed for supplying power to the odometer, the accuracy and consistency of test data are improved, the working efficiency and the product quality are improved, and the production and operation cost of enterprises is reduced.
Drawings
Fig. 1 is a block diagram of the present invention.
In fig. 1: the device comprises a program control power supply unit 1, a resistor array unit 2, a main controller unit 3, an LCD display unit 4, a DC/DC converter unit 5 and an odometer unit 6.
Fig. 2 is a circuit diagram of the programmable power supply of the present invention.
Fig. 3 is a circuit diagram of the central controller unit, the LCD display unit, the DC/DC converter unit and the odometer unit according to the present invention.
Fig. 4 is a timing diagram of the power supply environment test process of the present invention.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
The utility model provides a subway vehicle electron odometer power supply environment test device, includes programme-controlled power supply unit 1, resistance array unit 2, main control unit 3, LCD display element 4, DC/DC converter unit 5 and odometer unit 6, programme-controlled power supply unit 1's input and input power Vin are connected, programme-controlled power supply unit 1's output and odometer unit 6 are connected, programme-controlled power supply unit 1's input still is connected with resistance array unit 2's output, resistance array unit 2's input and main control unit 3's output are connected, exchange data through serial communication between main control unit 3 and the odometer unit 6, input power Vin still is connected with DC/DC converter unit 5.
In this embodiment, the output end of the main controller unit 3 is further connected to an LCD display unit 4.
In the present embodiment, the DC/DC converter unit 5 provides an input power VCC to the main controller unit 3 and the LCD display unit 4.
In this embodiment, the chip of the main controller unit 3 is a single chip microcomputer with the model of STC12C5402 AD.
In the present embodiment, the chip model of the DC/DC converter unit 5 is MC 34063.
In this embodiment, the LCD display unit 4 is a display module of a type LCD 12864.
Connection relation of each pin of the circuit:
fig. 2 is a circuit diagram of the programmable power supply unit 1, wherein: the input voltage Vin is connected with a programmable power supply integrated voltage stabilizer U1-3 and C1 through P1-1, the output V1 of U1-2 is connected with R8, C2 and C3, the output V1 of U1-2 is connected with an odometer DUT1-1, and the output V1-1 is connected with a resistor array R1-R6; the resistor array driving chips U2-16 are connected with R1, U2-15 are connected with R2, U2-14 are connected with R3, U2-13 are connected with R4, U2-12 are connected with R5, and U2-11 are connected with R6.
Fig. 3 is a circuit diagram of the main controller unit 3, the LCD display unit 4, the DC/DC converter unit 5, and the odometer unit 6, in which: a U3-16 output P40 of a Main Controller (MCU) is connected with U2-1 of a resistor array, a test power supply 1.4U1 is connected with DUT1-1, a U3-17 output P25 is connected with U2-2, a test power supply 1.25U1 is connected with DUT1-1, a U3-18 output P0 is connected with U2-3, a test power supply 1.0U1 is connected with DUT1-1, a U3-20 output N30 is connected with U2-4, a test power supply 0.7U1 is connected with DUT1-1, a U3-21 output N40 is connected with U2-5, a test power supply 0.6U1 is connected with 1-1, a U3-23 output 0V is connected with U2-6, a test power supply 0V is connected with DUT1-1, and transient outage is simulated; the U3-7 output CS of the main controller is connected with the LCD display U4-4, the U3-8 output SID is connected with U4-5, the U3-9 output SCLK is connected with U4-6, and the U3-5 output L _ SW is connected with R28; the output TXD of the U3-1 of the main controller is connected with an odometer DUT1-6, the output RXD of the DUT1-5 is connected with the U3-32, and serial communication between the main controller and the odometer is realized; r28 of the LCD display is connected with Q6-B, Q6-C is connected with U4-20, and is used for controlling the backlight illumination of the LCD; the DC/DC converter control chip U6-6 is connected with R19, U6-1, U6-7 and U6-8 are connected with R19 in short circuit mode, U6-4 is connected with C8, U6-2 is connected with D1 and L1, U6-5 is connected with R20 and R21, R21 is connected with L1, C6 and C7, and an output power VCC is connected with U3-28, R16, U4-2, U4-17 and U4-19.
The working process and the principle thereof are as follows:
referring to IEC60571 international standard, an automatic test device simulates a power supply test environment specified by IEC60571 standard, simulates a power supply voltage fluctuation or instantaneous power failure power supply environment, and designs a test flow to supply power to a speedometer.
The power supply voltage rise and fall in the power supply environment are realized by a linear adjustable integrated voltage stabilizer LM317 through a main controller adjusting a resistor array, and the principle is that
UO＝(1+R2/R1)×VREF
In the formula, a reference voltage VREF1.25V; the resistor R1 is 240 omega, and the output voltage Uo is adjusted by adjusting R2.
The microprocessor automatically controls the test environment and the process, and collects, processes and displays the test data. The test items continuously work for 2 hours according to one sample point in 1 second, the number of the sample points is collected and compared with the theoretical value of 7200 points, and whether the functional performance of the odometer meets the design requirement is checked.
With reference to fig. 2, the programmable power supply unit 1 comprises: taking the power mileage of 24V nominal voltage as an example, the adjustable integrated voltage regulators U1(LM317), R8(240 omega), C1, C2 and C3. The resistor array unit 2 includes: drive chips U2(ULN2003), R1(6.21K), R2(5.52K), R3(4.37K), R4(3K), R5(2.52K), R6(0 Ω). The electronic switch U2 is used for controlling the R1-R6 to be connected to the U1-1 adjusting end, so that the U1-2 adjustable output voltage V1, V1 and R1-R6 are in the relation shown in Table 1.
TABLE 1 relationship of V1 to R1-R6
Referring to fig. 3, the Main Controller (MCU) unit 3 includes: microprocessor chip U3(STC12C5402AD) and peripheral components; the DC/DC converter unit 5 includes: chip U6(MC34063), inductor L1, Schottky diode D1(SS16), R19-R21, C6-C8; the LCD display unit 4 includes: a display module U4(LCD12864), a triode Q6(2N2222), and R28. The output TXD of the U3-1 of the main controller is connected with the odometer DUT1-6, and the output RXD of the DUT1-5 is connected with the U3-32, so that the main controller and the odometer are in serial communication.
Referring to fig. 3 and 4, the main controller U3 controls the resistor array and the programmable power supply to implement the power supply environment test process.
Based on the above: the utility model discloses testing the odometer according to international standard "IEC 60571 electronic equipment for rail vehicle" technical requirement, through microprocessor automatic data acquisition and processing, simulation mains voltage fluctuation or outage power supply environment in the twinkling of an eye, design test flow gives the odometer power supply, is favorable to improving test data accuracy and uniformity to improve work efficiency and product quality, reduce enterprise's production running cost
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (6)
1. A power supply environment test device of an electronic odometer of a subway vehicle is characterized by comprising a program-controlled power supply unit (1), a resistance array unit (2), a main controller unit (3), an LCD display unit (4), a DC/DC converter unit (5) and an odometer unit (6), the input end of the program-controlled power supply unit (1) is connected with an input power Vin, the output end of the program-controlled power supply unit (1) is connected with the odometer unit (6), the input end of the program-controlled power supply unit (1) is also connected with the output end of the resistor array unit (2), the input end of the resistance array unit (2) is connected with the output end of the main controller unit (3), the main controller unit (3) and the odometer unit (6) exchange data through serial communication, the input power Vin is also connected to a DC/DC converter unit (5).
2. The power supply environment test device for the electronic odometer of the metro vehicle according to claim 1, characterized in that the output end of the main controller unit (3) is further connected with an LCD display unit (4).
3. The power supply environment test device for the electric odometer of the metro vehicle according to claim 2, characterized in that said DC/DC converter unit (5) provides input power VCC for the main controller unit (3) and the LCD display unit (4).
4. The power supply environment test device for the electric odometer of the metro vehicle according to claim 1, characterized in that the chip of the main controller unit (3) adopts a single chip microcomputer with model number STC12C5402 AD.
5. The power supply environment test device for the electric odometer of the subway vehicle as claimed in claim 1, wherein said DC/DC converter unit (5) has a chip model of MC 34063.
6. The power supply environment test device for the electric odometer of the metro vehicle according to claim 2, characterized in that the LCD display unit (4) adopts a display module with a model number of LCD 12864.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120355639.7U CN214010351U (en) | 2021-02-06 | 2021-02-06 | Power supply environment test device for electronic odometer of subway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120355639.7U CN214010351U (en) | 2021-02-06 | 2021-02-06 | Power supply environment test device for electronic odometer of subway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214010351U true CN214010351U (en) | 2021-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120355639.7U Active CN214010351U (en) | 2021-02-06 | 2021-02-06 | Power supply environment test device for electronic odometer of subway vehicle |
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| Country | Link |
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| CN (1) | CN214010351U (en) |
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2021
- 2021-02-06 CN CN202120355639.7U patent/CN214010351U/en active Active
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