CN202815573U - Electric control unit test system - Google Patents
Electric control unit test system Download PDFInfo
- Publication number
- CN202815573U CN202815573U CN 201220026759 CN201220026759U CN202815573U CN 202815573 U CN202815573 U CN 202815573U CN 201220026759 CN201220026759 CN 201220026759 CN 201220026759 U CN201220026759 U CN 201220026759U CN 202815573 U CN202815573 U CN 202815573U
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- control unit
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Abstract
The utility model relates to an electric control unit test system, belonging to the electronic test field and comprising a signal conditioning and control device in connection with an electric control unit through test cables and an industrial control computer in connection with the signal conditioning and control device through a serial port, wherein the signal conditioning and control device comprises a current sensor, a drive circuit, a relay module, a sampling circuit, a communication module, a CPU and a power supply module. The power supply module is in connection with other components through power lines; the communication module is in connection with the industrial control computer through a serial port and is in connection with the CPU through data lines; the sampling circuit is in connection with the electric control unit through test cables; the CPU and the drive circuit, the drive circuit and the replay module, the replay module and the sampling circuit, and the sampling circuit and the CPU are all in connection through the data lines; the current sensor and the power supply module are also in connection through the data lines. The electric control unit test system is of a modular design and has the characteristics of convenient maintenance, accurate fault positioning and reliable and convenient test.
Description
Technical field
The utility model relates to a kind of test macro, particularly a kind of test macro of product ECU (Electrical Control Unit).
Background technology
ECU (Electrical Control Unit) is one of important system parts of a lot of products, also is the important execution unit of a lot of products.And that the detection of ECU (Electrical Control Unit) plays a part in the development of ECU (Electrical Control Unit) is very important.How to develop modularization, easy to maintenance, localization of fault accurately, have good man-machine interface, the reliable ECU (Electrical Control Unit) detection system of convenient test, be the difficult problem of pendulum in face of the scientific research personnel.
The utility model content
The purpose of this utility model is the defective for prior art, provide a kind of modularization, easy to maintenance, localization of fault accurately, have good man-machine interface, a reliable ECU (Electrical Control Unit) detection system of convenient test.
The utility model provides a kind of electronic control unit testing system, comprise the signal condition and the controller that are connected by test cable with ECU (Electrical Control Unit), the industrial computer that is connected by serial ports with signal condition and controller, wherein signal condition and controller comprise current sensor, driving circuit, relay module, sample circuit, communication module, CPU, power module, are connected by power lead between power module and the miscellaneous part; Communication module connects industrial computer, connects CPU by data line by serial ports; Sample circuit connects ECU (Electrical Control Unit) by test cable; Between CPU and the driving circuit, between driving circuit and the relay module, between relay module and the sample circuit, all be connected by data line between sample circuit and the CPU; Also be connected by data line between current sensor and the power module.
Principle of work of the present utility model is: industrial computer sends test instruction for signal condition and controller by serial ports and signal condition and controller communication; CPU in signal condition and the controller is by communication module and industrial computer communication, receive test instruction after, by the control driving circuit, drive the relay module and produce required sequential control, and sequential control is outputed to sample circuit; Sample circuit gathers the electric current and voltage of ECU (Electrical Control Unit) output under sequential control, and is transferred to CPU; CPU judges trouble unit and uploads to industrial computer by communication module by the test result that collects.The current sensor sample rate current cuts off the power supply if exceed safe range then control power module.The industrial computer receiving signal is managed the output with controller, and shows in real time the duty of each built-up circuit in the ECU (Electrical Control Unit).
Beneficial effect
The ECU (Electrical Control Unit) detection system that the utility model provides is modular design, and is easy to maintenance, localization of fault is accurate, convenient test is reliable.
Description of drawings
Fig. 1 is the structure composition frame chart of this device specific embodiment.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further details.
Present embodiment is a kind of ECU (Electrical Control Unit) tester of realizing according to the utility model.As shown in Figure 1, tester comprises signal condition and the controller that is connected by test cable with ECU (Electrical Control Unit), the industrial computer that is connected by serial ports with signal condition and controller, wherein signal condition and controller comprise current sensor, driving circuit, relay module, sample circuit, communication module, CPU, power module, are connected by power lead between power module and the miscellaneous part; Communication module connects industrial computer, connects CPU by data line by serial ports; Sample circuit connects ECU (Electrical Control Unit) by test cable; Between CPU and the driving circuit, between driving circuit and the relay module, between relay module and the sample circuit, all be connected by data line between sample circuit and the CPU; Also be connected by data line between current sensor and the power module.
The CPU of tester is a main control chip c8051f040, and the C8051F040 family device is fully-integrated mixed signal SOC (system on a chip) type MCU, has 64 digital I/O pins, Embedded a CAN2.0B controller.At a high speed, the CIP-51 kernel of 8051 compatibilities of pipeline organization (can reach 25MIPS).The ADC of real 12 100ksps, band PGA and 8 tunnels analogy multi-way switchs allow high voltage difference amplifier to be input to 12 ADC (60V peak-to-peak value), gain programmable, the ADC of real 8 500ksps, band PGA and 8 tunnels analogy multi-way switchs.Two 12 DAC, but the external data memory interface of ram in slice addressable 64KB address space with FLASH storer 4352 (4K+256) byte of programmable data update mode 64KB in-system programming.
Power module is converted to 28V product power supply to the 220V alternating current by AC-DC first, by DC-DC and power management chip 28V voltage is dropped to 3.3V again and powers to main control chip c8051f040.28V offers relay control output is provided simultaneously.
Drive circuit module is realized by optocoupler TLP627.Main control chip c8051f040 is by optocoupler TLP627 isolation drive relay, and design can reduce the interference that the driving relay brings like this, and circuit design is simple simultaneously, and is reliable.
The sample circuit module realizes by high speed photo coupling 0631.Main control chip c8051f040 gathers the switching value signal that ECU (Electrical Control Unit) is returned by high speed photo coupling 0631, closes defective by the switching value information judgement ECU (Electrical Control Unit) of returning.
Communication module is realized by Sp3223.The ECU (Electrical Control Unit) information exchange that main control chip c8051f040 collects c8051f040 by Sp3223 is crossed communications protocol and is sent to host computer, and host computer shows testing result.
The effect of current sensor is to convert source current to voltage, adopt electric resistance partial pressure to be depressured to 3V this voltage and carry the A/D sampling with interior by single-chip microcomputer, if electric current exceed regulation 4A electric current so system auto-breaking is guaranteed security of system.Accurately adopt the inner reference voltage of single-chip microcomputer to guarantee in order to sample.
Present embodiment has adopted multiple electrical security design:
(1) strict guarantee equipment ground is good when design, does not affect the performance of personal safety and equipment, and the ground wire overstriking of trying one's best when printed board, cabinet design is to reduce the ground line resistance;
(2) when physical circuit designs, adopted necessary Redundancy Design, to guarantee circuit safety, anti-overcurrent and mistake compression functions;
(3) electrical connector plug of casing has been taked the Anti-misplug design of different profiles, prevents that the mistake of electric connector from connecting.
The circuit board of present embodiment and AC-DC are installed in the industry control cabinet, on base plate, connect AC-DC by wire by bolted on connection, and the outside is connected with computer by 9 core connectors, connects ECU (Electrical Control Unit) by 2 35 core connectors.
Test macro is installed in the industry control cabinet, and on base plate, the outside is connected with computer by 9 core connectors by bolted on connection, connects ECU (Electrical Control Unit) by 2 35 core connectors.
The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvement; perhaps part technical characterictic wherein is equal to replacement, these improvement and replace and also should be considered as protection domain of the present utility model.
Claims (4)
1. electronic control unit testing system, it is characterized in that, comprise the signal condition and the controller that are connected by test cable with ECU (Electrical Control Unit), the industrial computer that is connected by serial ports with signal condition and controller, wherein signal condition and controller comprise current sensor, driving circuit, relay module, sample circuit, communication module, CPU, power module, are connected by power lead between power module and the miscellaneous part; Communication module connects industrial computer, connects CPU by data line by serial ports; Sample circuit connects ECU (Electrical Control Unit) by test cable; Between CPU and the driving circuit, between driving circuit and the relay module, between relay module and the sample circuit, all be connected by data line between sample circuit and the CPU; Also be connected by data line between current sensor and the power module.
2. a kind of electronic control unit testing system according to claim 1 is characterized in that, described CPU is a main control chip c8051f040, and driving circuit is optocoupler TLP627, and sample circuit is high speed photo coupling 0631, and communication module is that Sp3223 realizes.
3. a kind of electronic control unit testing system according to claim 2, it is characterized in that described test macro is installed in the industry control cabinet, by bolted on connection on base plate, the outside is connected with computer by 9 core connectors, connects ECU (Electrical Control Unit) by 2 35 core connectors.
4. a kind of electronic control unit testing system according to claim 3 is characterized in that, the ground wire overstriking of the circuit printing plate in the described electronic control unit testing system and industry control cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220026759 CN202815573U (en) | 2012-01-20 | 2012-01-20 | Electric control unit test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220026759 CN202815573U (en) | 2012-01-20 | 2012-01-20 | Electric control unit test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202815573U true CN202815573U (en) | 2013-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220026759 Expired - Fee Related CN202815573U (en) | 2012-01-20 | 2012-01-20 | Electric control unit test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202815573U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217968A (en) * | 2012-01-20 | 2013-07-24 | 哈尔滨建成集团有限公司 | Electric control unit test system |
-
2012
- 2012-01-20 CN CN 201220026759 patent/CN202815573U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217968A (en) * | 2012-01-20 | 2013-07-24 | 哈尔滨建成集团有限公司 | Electric control unit test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20160120 |
|
| EXPY | Termination of patent right or utility model |