CN210155290U

CN210155290U - Automobile power disturbance resistance test system

Info

Publication number: CN210155290U
Application number: CN201920578986.9U
Authority: CN
Inventors: 回姝; 王建国; 王洪雨
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-03-17
Anticipated expiration: 2029-04-26

Abstract

The utility model discloses a test system of car anti power disturbance. This car anti power disturbance test system contains: the system comprises an arbitrary waveform generator, a direct-current power supply, a high-power supply, a power failure simulator, a bus acquisition module, an oscilloscope and an upper computer; the method is used for simulating the real state of power disturbance or power failure under different working conditions during vehicle operation, directly connecting the positive and negative electrodes of an output power supply with the positive and negative electrodes of a vehicle power supply to replace a storage battery for power supply, directly inputting different power disturbance waveforms into a vehicle electronic and electrical system, adopting the output power disturbance waveform state by an oscilloscope, continuously monitoring the bus state during and after the power waveform is input, testing the electronic and electrical function state of the vehicle and the working state of an electronic and electrical load of the vehicle after the waveform is input, verifying whether all controllers and loads work normally, testing and verifying the power disturbance resistance of the vehicle, and providing an objective evaluation result of the power disturbance resistance of the vehicle.

Description

Automobile power disturbance resistance test system

Technical Field

The utility model relates to a car anti-power disturbance test system, whole car power state under the various operating modes of simulation verifies whole car electron electrical resistance to power disturbance ability.

Background

With the rapid development of the automobile electronic industry, the automobile electrical functions are increasingly increased and more complex. The vehicle power disturbance is not in any place, and the power disturbance waveform is defined according to the accumulation of the real vehicle experience of the power disturbance waveform and national standards and related electrical standards, such as starting pulse, superposing alternating current, slowly increasing and decreasing voltage and the like. The method adopts a storage battery real-vehicle test mode, can only verify partial power supply waveforms, cannot cover all power supply disturbance waveforms defined by standards and whole vehicle factories, utilizes an automobile power supply disturbance resistant test system to replace a storage battery, simulates various power supply disturbance waveforms to be input into a whole vehicle electronic and electrical system, and comprehensively verifies the power supply disturbance resistant capability of the whole vehicle electronic and electrical function.

Disclosure of Invention

The utility model aims at providing a car anti-power disturbance test system, whole car electron electrical system can't realize the test of power disturbance under the different operating modes under the battery power supply condition, can not satisfy whole car electrical property test demand, utilize car anti-power disturbance test system, can realize under operating modes such as common operating mode, limit condition, power failure, all power waveforms test whole car electron electrical function state, guarantee whole car electron electrical system functional reliability under power disturbance.

The technical scheme of the invention is realized as follows: the automobile power disturbance resistance testing system consists of an arbitrary waveform generator 2, a direct current stabilized power supply 5, a high-power supply 3, a power failure simulator 4, a bus acquisition module 6, an oscilloscope 7 and an upper computer 1,

the upper computer 1 is in control connection with the arbitrary waveform generator 2 and is used for outputting required waveform parameters to the arbitrary waveform generator 2; the random waveform generator 2 is in communication connection with a high-power supply 3, the high-power supply 3 is connected to the positive and negative poles of a power supply of a detected vehicle 8 through a power supply fault simulator 4 to replace a vehicle storage battery, and the high-power supply 3 outputs a voltage waveform to the power supply fault simulator 4; the power failure simulator 4 is also connected with a direct-current stabilized voltage power supply 5, the oscilloscope 7 and the bus acquisition module 6 are connected with a vehicle 8 to be tested, the oscilloscope 7 is used for extracting the output voltage state, and the bus acquisition module 6 is used for acquiring the vehicle bus state and monitoring the working state of each controller and load.

The arbitrary waveform generator 2 is communicated with a high-power supply 3 through a GPIB interface; the bus acquisition module 6 monitors the bus state through the OBD diagnostic interface.

The automobile power disturbance resisting operation principle is as follows: the upper computer edits any waveform, the any waveform generator is connected to a high-power supply system through a GPIB (general purpose interface bus) wire, the high-power supply outputs the waveform to a power failure simulator, the power failure simulator can be connected with a plurality of power supplies, if the waveform is special, a direct-current stabilized voltage power supply is required to be connected, the waveform output is realized, the power failure simulator outputs the corresponding waveform to a test vehicle, the test vehicle removes a storage battery, the positive electrode of the power supply output end of the test system is connected with the positive electrode of a power line of the whole vehicle, the negative electrode of the output end is connected with the negative electrode wire of the power supply of the whole vehicle, the simulation storage battery supplies power to the whole vehicle, the power disturbance resistance test of a specified waveform is carried out, the output voltage state is collected by an oscilloscope, the bus communication tool collects.

The utility model provides an above-mentioned be used for car anti-power disturbance test, its test coverage is high, and repeatability is good.

Drawings

FIG. 1 is a schematic diagram of a standard waveform power supply disturbance test system;

FIG. 2 is a wiring diagram for a standard waveform power supply immunity test;

FIG. 3 is a schematic diagram of an arbitrary waveform power supply disturbance test system;

fig. 4 is a wiring diagram for testing the immunity of the power supply with arbitrary waveform.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.

The utility model discloses an anti power disturbance test of standard wave form explains: the method comprises the steps of directly embedding standard waveforms such as 16750, VW and other electrical performance waveforms in upper computer software, directly calling out the waveforms through the upper computer, inputting voltage waveforms into an actual vehicle system through an arbitrary waveform generator by a high-power supply, judging whether the output waveforms of the oscilloscope are consistent with the actual waveforms or not in the test process, collecting the bus state of the vehicle by using a bus tool, testing the electronic and electrical function items of the whole vehicle after the anti-interference waveforms of the power supply are output, observing whether the electronic and electrical load states and the states of all controllers on the bus are normal or not, and giving objective results to the anti-interference capability of the whole vehicle under the condition of standard waveform input. The standard waveform power supply disturbance test system is schematically shown in figure 1.

Standard waveform power supply immunity test wiring implementation description: the high-power supply supplies power to the whole vehicle to simulate standard voltage waveform, the bus state is monitored through the OBD diagnosis port, whether the oscillograph recovery output waveform is consistent with the actual waveform or not is judged, and the post-processing is carried out by upper computer software. The wiring diagram for the standard waveform power supply immunity test is shown in figure 2.

The utility model discloses an anti power disturbance test of standard wave form explains: the upper computer software has a specific waveform editing function, the waveform is edited by the upper computer software, the arbitrary waveform is sent to an arbitrary waveform generator, a high-power supply inputs a voltage waveform into a power failure simulator, another direct-current power supply is also connected with the power failure simulator, the two power supplies are combined to finish specific power supply waveform output, the output end of the power failure simulator inputs the voltage waveform into a real vehicle system, an oscilloscope acquires whether the power supply output waveform is consistent with an actual waveform or not, a bus tool acquires the state of a vehicle bus, after the power supply anti-interference waveform is output, the whole vehicle electronic function item is tested, the state of an electronic electrical load and the states of all controllers on the bus are observed to be normal or not, and objective results are given to the whole vehicle power supply interference resistance under the specific waveform input condition. The schematic diagram of the arbitrary waveform power supply disturbance test system is shown in FIG. 3.

The implementation of the wiring of the power supply immunity test with any waveform is described as follows: the arbitrary waveform generator is connected with a high-power supply through a GPIB wire, the positive output end of the high-power supply is connected with the positive input end of a power failure simulator, the negative output end of the high-power supply is connected with the negative input end of the power failure simulator on a real vehicle wiring harness, the positive of a direct-current power supply is connected with the other positive input end of the power failure simulator, the negative of the direct-current power supply is connected with the other negative input end of the power failure simulator, the positive output end of the power failure simulator is directly connected with a lap joint of a storage battery on the real vehicle wiring harness, the negative output end of the power failure simulator is directly connected with the lap joint of the storage battery on the real vehicle wiring harness, under the condition that the storage battery is not connected, the power failure simulator supplies power for the whole vehicle, a specific voltage waveform is simulated, the state of a, and the upper computer software is used for post-processing. The wiring diagram for the immunity test of the power supply with arbitrary waveform is shown in figure 4.

Claims

1. An automobile power disturbance resistance test system is characterized by comprising an arbitrary waveform generator (2), a direct current stabilized power supply (5), a high-power supply (3), a power failure simulator (4), a bus acquisition module (6), an oscilloscope (7) and an upper computer (1),

the upper computer (1) is in control connection with the arbitrary waveform generator (2) and is used for outputting the required waveform parameters to the arbitrary waveform generator (2); the random waveform generator (2) is in communication connection with the high-power supply (3), the high-power supply (3) is connected to the positive and negative poles of the power supply of the vehicle to be tested (8) through the power supply fault simulator (4) to replace a vehicle storage battery, and the high-power supply (3) outputs a voltage waveform to the power supply fault simulator (4); the power failure simulator (4) is also connected with a direct-current stabilized voltage power supply (5), the oscilloscope (7) and the bus acquisition module (6) are connected with a tested vehicle (8), the oscilloscope (7) is used for extracting an output voltage state, and the bus acquisition module (6) is used for acquiring a vehicle bus state and monitoring the working state of each controller and load;

the arbitrary waveform generator (2) is communicated with the high-power supply (3) through a GPIB interface; and the bus acquisition module (6) monitors the bus state through the OBD diagnosis interface.