CN214335172U

CN214335172U - Electric leakage testing device for ECU of automobile steering engine

Info

Publication number: CN214335172U
Application number: CN202023071931.0U
Authority: CN
Inventors: 徐炜; 林浩然; 霍俊浩; 韩召松; 郭吉月
Original assignee: Bosch Huayu Steering Systems Yantai Co Ltd
Current assignee: Bosch Huayu Steering Systems Yantai Co Ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-10-01
Anticipated expiration: 2030-12-18

Abstract

The utility model discloses an electric leakage testing device for an automobile steering engine ECU, which comprises an automobile steering engine functional test board, a testing mechanism, a tool seat arranged on the table surface of the test board, a programmable power supply, a Siemens SM331 analog input module and a CPU, wherein the programmable power supply is connected with the ECU of the automobile steering engine to be tested; the input end of the analog input module is respectively connected to the ECU shell and the cathode of the programmable power supply through two wires, and the output end of the analog input module is connected to the CPU. Potential difference formed by the product shell and the cathode of the programmable power supply is collected through the Siemens SM331 analog quantity input module, collected data are converted, judged and analyzed through the CPU, and then results are transmitted to the HMI displayer to be displayed and form an alarm at the same time.

Description

Electric leakage testing device for ECU of automobile steering engine

Technical Field

The utility model relates to a auto steering machine test equipment especially relates to an auto steering machine ECU electric leakage testing arrangement.

Background

After the automobile steering machine is produced and assembled, the automobile steering machine needs to be capable of being detected. The current common automobile steering machine function test bench generally comprises a test bench surface, a tool seat arranged on the test bench surface, a test mechanism, a CPU, an HMI display and other equipment, and a series of function tests are carried out on an automobile steering machine by installing the automobile steering machine on the tool seat. However, there is no corresponding detection for the important index of whether the electrical leakage occurs in the ECU (commonly called a black box) of the automobile steering engine, and the electrical leakage detection cannot be completed while the function of the automobile steering engine is tested.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem of prior art, the utility model provides an automobile steering machine ECU electric leakage testing arrangement can guarantee to turn to jackshaft assembly glide.

The utility model discloses a car turns to quick-witted ECU electric leakage testing arrangement, its concrete structure is as follows:

the automatic steering engine test system comprises an automobile steering engine functional test bench, a test mechanism, a tool seat arranged on the table board of the test bench, a programmable power supply, a Siemens SM331 analog quantity input module and a CPU, wherein the programmable power supply is connected with an ECU of the automobile steering engine to be tested and supplies power to the ECU; the input end of the Siemens SM331 analog quantity input module is respectively connected to the ECU shell and the cathode of the programmable power supply through two leads so as to collect potential difference formed at the positions of the ECU shell and the cathode of the programmable power supply, the output end of the Siemens SM331 analog quantity input module is connected to the CPU, and the CPU outputs corresponding display or/and alarm signals according to the received voltage difference.

The electric leakage testing device also comprises an HMI displayer which receives the display signal sent by the CPU to carry out corresponding electric leakage display.

The electric leakage testing device also comprises an alarm for receiving the alarm signal sent by the CPU and giving sound and light alarm.

Use the utility model discloses a car steering engine ECU electric leakage testing arrangement has obtained following beneficial effect:

1. the real-time detection response speed of the leakage point is high, and whether the voltage of the leakage point exceeds the limit or not can be quickly reflected within the range of 20ms by adding the Siemens SM331 analog quantity input module.

2. The reliability and stability of a power supply system of an electronic steering gear ECU can be detected.

3. The ECU is powered, and the current and voltage are detected to judge whether the ECU meets the factory requirements.

4. The programmable power supply, the CPU, the HMI displayer and the alarm can directly adopt original equipment of the automobile steering machine functional test board, only a Siemens SM331 analog quantity input module needs to be added, and the automobile steering machine is simple in structure and convenient to use.

Drawings

Fig. 1 is a schematic structural view of the electric leakage testing device for the ECU of the automobile steering engine of the present invention;

fig. 2 is the utility model discloses a car steering engine ECU electric leakage testing arrangement's schematic diagram.

Detailed Description

The following describes an electric leakage testing device for an ECU of an automobile steering gear according to the present invention with reference to the accompanying drawings and embodiments.

As shown in fig. 1-2, the utility model discloses an automobile steering gear ECU electric leakage testing arrangement mainly includes automobile steering gear function testboard 1, accredited testing organization 2 and locates the frock seat 3 on the testboard mesa, different from prior art, still include programmable power supply 4, siemens SM331 analog input module 5, CPU8, wherein, programmable power supply 4 links to each other with the ECU 7 of the automobile steering gear 6 that awaits measuring, for its power supply, as an embodiment, this programmable power supply 4 can directly adopt the power of automobile steering gear function testboard 1 switch board, supply out 12V direct current; the input end of the Siemens SM331 analog quantity input module 5 is respectively connected to the shell of the ECU 7 and the negative electrode of the programmable power supply 4 through two leads so as to collect the potential difference formed at the negative electrode of the shell of the ECU 7 and the programmable power supply 4, the output end is connected to the CPU8, and the CPU8 outputs corresponding display or/and alarm signals according to the received voltage difference.

As an embodiment, the leakage testing device further includes an HMI display 9 for receiving a display signal sent by the CPU8 to display the corresponding leakage. The electric leakage testing device also comprises an alarm for receiving the alarm signal sent by the CPU8 and giving sound and light alarm. The HMI displayer and the alarm can be directly used by the original HMI displayer and alarm equipment of the automobile steering machine functional test board 1.

The utility model discloses a leakage test device's design principle does: the process of voltage leakage from the source to the earth or zero potential point is a potential attenuation process, and the leakage voltage close to the leakage point can be approximately equal to the current leakage voltage by calculating the conductor resistivity of the leakage equipment. Therefore, by adding the analog quantity module, the near point is selected in the range of the leakage point, and the potential attenuation which flows to the zero potential point is carried out by taking the leakage point as the center, so that the voltage fluctuation and the leakage range of the near point of the detected leakage workpiece are detected.

The specific test process is as follows: in the product testing process, after the programmable power supply 4 provides a set voltage value for the ECU 7, the automobile steering machine arranged on the tool seat 3 is subjected to related actions and tests through the automobile steering machine function test bench 1, and certain defective products are discharged outwards through a product shell in the process. Potential difference formed by the product shell and the cathode of the programmable power supply 4 is collected through the Siemens SM331 analog quantity input module 5, collected data are converted, judged and analyzed through the CPU8, and then results are transmitted to the HMI displayer 9 to be displayed and form an alarm at the same time.

However, those skilled in the art should realize that the above embodiments are only used for illustrating the present invention and not used as a limitation of the present invention, and that the changes and modifications to the above embodiments are within the scope of the appended claims as long as they are within the true spirit of the present invention.

Claims

1. The utility model provides a auto steering machine ECU electric leakage testing arrangement, includes auto steering machine function test platform, accredited testing organization and locates the frock seat on the testboard mesa, its characterized in that: the system also comprises a programmable power supply, a Siemens SM331 analog quantity input module and a CPU, wherein the programmable power supply is connected with the ECU of the automobile steering engine to be tested and supplies power to the ECU; the input end of the Siemens SM331 analog quantity input module is respectively connected to the ECU shell and the cathode of the programmable power supply through two leads so as to collect potential difference formed at the positions of the ECU shell and the cathode of the programmable power supply, the output end of the Siemens SM331 analog quantity input module is connected to the CPU, and the CPU outputs corresponding display or/and alarm signals according to the received voltage difference.

2. The electric leakage test device for the ECU of the automobile steering engine as claimed in claim 1, characterized in that: the electric leakage testing device also comprises an HMI displayer which receives the display signal sent by the CPU to carry out corresponding electric leakage display.

3. The electric leakage test device for the ECU of the automobile steering engine as claimed in claim 1, characterized in that: the electric leakage testing device also comprises an alarm for receiving the alarm signal sent by the CPU and giving sound and light alarm.