CN112230156A - Power supply test system and power supply test method of vehicle-mounted signal equipment - Google Patents
Power supply test system and power supply test method of vehicle-mounted signal equipment Download PDFInfo
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- CN112230156A CN112230156A CN201910577961.1A CN201910577961A CN112230156A CN 112230156 A CN112230156 A CN 112230156A CN 201910577961 A CN201910577961 A CN 201910577961A CN 112230156 A CN112230156 A CN 112230156A
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- power supply
- vehicle
- board card
- test
- port conversion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- Testing Electric Properties And Detecting Electric Faults (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a power supply test system and a power supply test method of vehicle-mounted signal equipment, wherein the power supply test system comprises a direct-current power supply, a power supply board port conversion board card, a load generator and an oscilloscope; the direct-current power supply is electrically connected with the vehicle-mounted power board card, the vehicle-mounted power board card is electrically connected with the power board port conversion board card, and the power board port conversion board card is electrically connected with the load generator and the oscilloscope respectively; the direct-current power supply supplies power to the vehicle-mounted power supply board card, the power supply board port conversion board card performs power supply test on the vehicle-mounted power supply board card, the load generator provides load, and the oscilloscope displays the working state of the vehicle-mounted power supply board card. The invention can simulate the voltage input under the real environment through the DC power supply, is convenient for the staff to test and analyze the fault condition, and the design of the power panel port conversion board card can solve the problem that the vehicle-mounted power supply equipment is limited by space during the test, thereby reducing the probability of electromagnetic interference.
Description
Technical Field
The invention relates to the field of rail transit, in particular to a power supply test system and a power supply test method of vehicle-mounted signal equipment.
Background
In urban rail transit, a vehicle-mounted signal system is a key device for ensuring safe and stable operation of a passenger train. However, the board card power supply problem of the vehicle-mounted signal equipment, including factors such as surge, voltage ripple, spike, distortion, imbalance and external harmonic interference, has a great influence on normal rail transit operation. Although the vehicle-mounted power supply equipment is strictly tested before being shipped from a factory, each single board is usually affiliated to different equipment systems and comes from different equipment suppliers, and complete and detailed tests and measurements are not necessarily performed in a single test. In addition, due to the fact that the power supply equipment is limited by space in the installation process, different board cards and connecting wires are stacked mutually, the probability of electromagnetic interference is increased, different signals are overlapped in the radiation process, unpredictable harmonic components are generated, namely, the reason why 'strange phenomena' are generated when electromagnetic interference occurs in frequency under the working environment and a high error code is generated, and the test is disassembled and then normal is recovered is generated.
Disclosure of Invention
The invention provides a power supply test system and a power supply test method for vehicle-mounted signal equipment, aiming at overcoming the defect that the power supply test of the vehicle-mounted signal equipment for rail transit in the prior art has problems.
The invention solves the technical problems through the following technical scheme:
the invention provides a power supply test system of vehicle-mounted signal equipment, which is used for testing a vehicle-mounted power supply board card of the vehicle-mounted power supply equipment and comprises a direct-current power supply, a power supply board port conversion board card, a load generator and an oscilloscope;
the direct-current power supply is electrically connected with the vehicle-mounted power supply board card, the vehicle-mounted power supply board card is electrically connected with the power supply board port conversion board card, and the power supply board port conversion board card is respectively electrically connected with the load generator and the oscilloscope;
the direct-current power supply is used for supplying power to the vehicle-mounted power supply board card, the power supply board port conversion board card is used for carrying out power supply testing on the vehicle-mounted power supply board card, the load generator is used for providing a load, and the oscilloscope is used for displaying the working state of the vehicle-mounted power supply board card.
Preferably, the dc power supply is used for simulating power supply voltages under different real conditions.
Preferably, the power strip port converter card is provided with a plurality of pins, and different pins correspond to power voltages under different real conditions.
Preferably, the power test performed by the power board port conversion board card includes: at least one of voltage measurement, short circuit measurement, no-load test, ripple and noise test, and short circuit test.
Preferably, the environmental working temperature of the DC power supply is 5-40 ℃, the input voltage is 100-240V, and the input frequency is 47-63 Hz.
The invention also provides a power supply test method of the vehicle-mounted signal equipment, which is realized by using the power supply test system, and the power supply test method comprises the following steps:
the direct-current power supply is used for supplying power to the vehicle-mounted power supply board card;
providing a load with the load generator;
carrying out power supply test on the vehicle-mounted power supply board card by using the power supply board port conversion board card;
and displaying the working state of the vehicle-mounted power supply board card by using the oscilloscope.
The positive progress effects of the invention are as follows: the invention can simulate the voltage input under the real environment through the DC power supply, is convenient for the staff to test and analyze the fault condition, and the design of the power panel port conversion board card can solve the problem that the vehicle-mounted power supply equipment is limited by space during the test, reduces the probability of electromagnetic interference, and simultaneously realizes the intuitive observation and detection of the power performance index by using the oscilloscope.
Drawings
Fig. 1 is a block diagram of a power testing system of a vehicle-mounted signal device according to a preferred embodiment of the invention.
Fig. 2 is a flowchart of a power testing method for vehicle-mounted signal equipment according to a preferred embodiment of the invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
The invention provides a power supply test system of vehicle-mounted signal equipment, which is used for testing a vehicle-mounted power supply board card of the vehicle-mounted power supply equipment of a rail transit train, and as shown in figure 1, the power supply test system comprises a direct-current power supply supplier 1, a power supply board port conversion board card 2, a load generator 3 and an oscilloscope 4;
the direct-current power supply 1 is electrically connected with the vehicle-mounted power board 5, the vehicle-mounted power board 5 is electrically connected with the power board port conversion board 2, and the power board port conversion board 2 is electrically connected with the load generator 3 and the oscilloscope 4 respectively;
in the implementation process of the invention, the DC power supply 1 is a programmable DC power supply (specifically, the model may be chroma 62006P), the DC power supply 1 is used for supplying power to the vehicle-mounted power board 5, and the DC power supply 1 is used for simulating power voltage input under different real conditions, including outputting 5VDC/DC, 5V _ X, 3.3V _ X, 5V _ CAN _ X and 24VDC/DC under the condition of 81VDC, outputting 5VDC/DC and 24VDC/DC under the condition of 45VDC, and outputting 5VDC/DC and 24VDC/DC under the condition of 125 VDC.
The power board port conversion board 2 is used for performing power supply test on the vehicle-mounted power board 5, and specifically includes at least one of voltage measurement, short-circuit measurement, no-load test, ripple and noise test, short-circuit test and feedback state detection of corresponding voltage, the load generator 3 is used for providing a load, and the oscilloscope 4 is used for displaying the working state of an external power supply and whether the working state of the vehicle-mounted power board meets the requirement of performance index. Taking an output voltage of 5V _ X under the condition of 81VDC as an example, when an oscilloscope is accessed for testing, the amplitude is 5.01V, the amplitude error is 104mV, and the performance index requirement that the error is within 200mV is met.
The power board port conversion board 2 is provided with a plurality of pins, different pins correspond to power voltages under different real conditions, specifically, the power board port conversion board 2 may have 32 pins (a1-a32), and the specific setting may be: the functional definitions of the pins such as the pin 5V _ X (pin 28), the pin 5V _ CAN _ X (pin 24), the pin 3.3V _ X (pin 26), and the pin GND _ X (pin 27), are the prior art, and are not described herein again.
Furthermore, the environmental working temperature (5 ℃ to 40 ℃) of the direct current power supply is set in advance according to the specification requirement in the electronic equipment for the railway vehicle, the input voltage (the range is 100-; and setting the starting point and the stopping point of the load current, the rising rate and the falling rate of the load current and the change period of the load current according to the specification requirement for the output needing dynamic response test, and adjusting the change period of the load current according to the specification requirement after starting. In addition, the requirements of output voltage deviation, linear stability rate, output ripple and noise, short-circuit overcurrent protection performance and dynamic response can be obtained by testing in a laboratory test environment.
Further, according to the electromagnetic environment characteristics of the vehicle-mounted power supply equipment, states of continuous waves and noise are displayed and measured by using an oscilloscope, corresponding error reasons are analyzed, possible interference sources of various faults of the vehicle-mounted power supply equipment are verified, and corresponding technical requirements and suggestions are provided. In addition, according to the requirement of performance indexes, the output error of voltage noise should not exceed 200 mV.
The invention can be used for reliability test analysis and research of wired vehicle-mounted power supply equipment, and can reduce the huge influence caused by operation interruption due to possible faults. Meanwhile, through the relevant test of new line vehicle mounted power supply equipment, the construction efficiency is improved, and the full life cycle cost of the equipment is reduced.
As shown in fig. 2, this embodiment further provides a power supply testing method for a vehicle-mounted signal device, which is implemented by using the power supply testing system described above, where the power supply testing method includes the following steps:
102, providing a load by using the load generator;
103, carrying out power supply test on the vehicle-mounted power supply board card by using the power supply board port conversion board card;
and 104, displaying the working state of the vehicle-mounted power supply board card by using the oscilloscope.
The invention can simulate the voltage input under the real environment through the DC power supply, is convenient for the staff to test and analyze the fault condition, and the design of the power panel port conversion board card can solve the problem that the vehicle-mounted power supply equipment is limited by space during the test, reduces the probability of electromagnetic interference, and simultaneously realizes the intuitive observation and detection of the power performance index by using the oscilloscope.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (6)
1. A power supply test system of vehicle-mounted signal equipment is used for testing a vehicle-mounted power supply board card of the vehicle-mounted power supply equipment and is characterized by comprising a direct-current power supply, a power supply board port conversion board card, a load generator and an oscilloscope;
the direct-current power supply is electrically connected with the vehicle-mounted power supply board card, the vehicle-mounted power supply board card is electrically connected with the power supply board port conversion board card, and the power supply board port conversion board card is respectively electrically connected with the load generator and the oscilloscope;
the direct-current power supply is used for supplying power to the vehicle-mounted power supply board card, the power supply board port conversion board card is used for carrying out power supply testing on the vehicle-mounted power supply board card, the load generator is used for providing a load, and the oscilloscope is used for displaying the working state of the vehicle-mounted power supply board card.
2. The power supply testing system of the on-board signaling device of claim 1, wherein the dc power supply is configured to simulate power supply voltages under different real conditions.
3. The power testing system of claim 2, wherein the power board port adapter card has a plurality of pins, and different pins correspond to different power voltages under different real conditions.
4. The power supply test system for vehicle signal equipment according to claim 1, wherein the power supply test performed by the power supply board port conversion board card comprises: at least one of voltage measurement, short circuit measurement, no-load test, ripple and noise test, and short circuit test.
5. The power test system of vehicle-mounted signal equipment as claimed in claim 1, wherein the environmental operating temperature of the DC power supply is 5-40 ℃, the input voltage is 100-240V, and the input frequency is 47-63 Hz.
6. A power supply test method of a vehicle-mounted signal device, which is implemented by the power supply test system of any one of claims 1 to 5, the power supply test method comprising the steps of:
the direct-current power supply is used for supplying power to the vehicle-mounted power supply board card;
providing a load with the load generator;
carrying out power supply test on the vehicle-mounted power supply board card by using the power supply board port conversion board card;
and displaying the working state of the vehicle-mounted power supply board card by using the oscilloscope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910577961.1A CN112230156A (en) | 2019-06-28 | 2019-06-28 | Power supply test system and power supply test method of vehicle-mounted signal equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910577961.1A CN112230156A (en) | 2019-06-28 | 2019-06-28 | Power supply test system and power supply test method of vehicle-mounted signal equipment |
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| Publication Number | Publication Date |
|---|---|
| CN112230156A true CN112230156A (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910577961.1A Pending CN112230156A (en) | 2019-06-28 | 2019-06-28 | Power supply test system and power supply test method of vehicle-mounted signal equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030769A (en) * | 2021-03-10 | 2021-06-25 | 广东电网有限责任公司电力调度控制中心 | Wisdom power integrated circuit board with monitoring function |
-
2019
- 2019-06-28 CN CN201910577961.1A patent/CN112230156A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030769A (en) * | 2021-03-10 | 2021-06-25 | 广东电网有限责任公司电力调度控制中心 | Wisdom power integrated circuit board with monitoring function |
| CN113030769B (en) * | 2021-03-10 | 2024-04-19 | 广东电网有限责任公司电力调度控制中心 | Intelligent power board card with monitoring function |
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