CN103217968A - Electric control unit test system - Google Patents
Electric control unit test system Download PDFInfo
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- CN103217968A CN103217968A CN2012100182392A CN201210018239A CN103217968A CN 103217968 A CN103217968 A CN 103217968A CN 2012100182392 A CN2012100182392 A CN 2012100182392A CN 201210018239 A CN201210018239 A CN 201210018239A CN 103217968 A CN103217968 A CN 103217968A
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Abstract
The invention relates to an electric control unit test system and belongs to the electronic test field. The electric control unit test system comprises 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 central processing unit (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 data lines, and the current sensor and the power supply module are also in connection through data lines. The electric control unit test system is of a modular design and has the advantages of being convenient to maintain, accurate in fault positioning, reliable in testing and convenient to test.
Description
Technical field
The present invention relates to a kind of test macro, particularly a kind of test macro of product ECU (Electrical Control Unit) belongs to the Electronic Testing field.
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 computer 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 objective of the invention is defective at prior art, provide a kind of modularization, easy to maintenance, localization of fault accurately, have good man computer interface, a reliable ECU (Electrical Control Unit) detection system of convenient test.
The invention 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 between sample circuit and the CPU by data line; Also be connected between current sensor and the power module by data line.
Principle of work of the present invention 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 control Driver Circuit, driving relay module produces required sequential control, and sequential control is outputed to sample circuit; Sample circuit is gathered 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 received signal is nursed one's health the output with controller, and shows the duty of each built-up circuit in the ECU (Electrical Control Unit) in real time.
Beneficial effect
ECU (Electrical Control Unit) detection system provided by the invention 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 the specific embodiment of the invention.
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 present invention.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 between sample circuit and the CPU by data line; Also be connected between current sensor and the power module by data line.
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, and chip integration has become a CAN2.0B controller.The CIP-51 kernel of 8051 compatibilities of pipeline organization (can reach 25MIPS) at a high speed.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 one 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 earlier, by DC-DC and power management chip 28V voltage is dropped to 3.3V again and gives main control chip c8051f040 power supply.28V offers relay control output is provided simultaneously.
Drive circuit module is realized by light lotus root TLP627.Main control chip c8051f040 is by light lotus root 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 light lotus root 0631.Main control chip c8051f040 gathers the switching value signal that ECU (Electrical Control Unit) is returned by high-speed light lotus root 0631, closes defective by the switching value information judgement ECU (Electrical Control Unit) of returning.
Communication module is realized by Sp3223.Main control chip c8051f040 sends to host computer to the ECU (Electrical Control Unit) information that c8051f040 collects by communications protocol by Sp3223, 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 by single-chip microcomputer with interior, if electric current overshoot 4A electric current so system will cut off the power supply automatically, guarantee 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 influence 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-wrong plug 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 lead by bolted on connection, and the outside is connected with computer by one 9 core connector, connect ECU (Electrical Control Unit) by 2 35 core connectors.
The above only is a preferred implementation of the present invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; 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 scope of the present invention.
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 between sample circuit and the CPU by data line; Also be connected between current sensor and the power module by data line.
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 light lotus root TLP627, and sample circuit is a high-speed light lotus root 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 one 9 core connector, 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 described circuit printing plate and casing, and electrical connector plug is taked the anti-wrong plug design of different profiles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100182392A CN103217968A (en) | 2012-01-20 | 2012-01-20 | Electric control unit test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100182392A CN103217968A (en) | 2012-01-20 | 2012-01-20 | Electric control unit test system |
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| CN103217968A true CN103217968A (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100182392A Pending CN103217968A (en) | 2012-01-20 | 2012-01-20 | Electric control unit test system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529829A (en) * | 2013-10-31 | 2014-01-22 | 无锡市矽成微电子有限公司 | Test system for electric vehicle controller |
| CN114003021A (en) * | 2021-10-29 | 2022-02-01 | 中车大连机车研究所有限公司 | Function test bed for universal electric control unit of locomotive |
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| CN201145714Y (en) * | 2007-11-23 | 2008-11-05 | 比亚迪股份有限公司 | Electronic control module testing apparatus and system |
| CN101615029A (en) * | 2008-06-27 | 2009-12-30 | 上海亿盟电气自动化技术有限公司 | Intelligent controller test system |
| CN101739022A (en) * | 2008-11-24 | 2010-06-16 | 比亚迪股份有限公司 | Performance test system and method for control unit of engine |
| CN201690428U (en) * | 2010-06-01 | 2010-12-29 | 深圳市蓝韵实业有限公司 | Simple logical time sequence generating circuit |
| CN101968653A (en) * | 2010-08-19 | 2011-02-09 | 西安理工大学 | Console device detector and console device detection method |
| US20110173499A1 (en) * | 2010-01-08 | 2011-07-14 | Atomic Energy Council-Institute Nuclear Energy Research | System of Testing Engineered Safety Feature Instruments |
| CN202067105U (en) * | 2011-03-30 | 2011-12-07 | 苏州市易德龙电器有限公司 | Extensible intelligent power source distributor |
| CN202815573U (en) * | 2012-01-20 | 2013-03-20 | 哈尔滨建成集团有限公司 | Electric control unit test system |
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2012
- 2012-01-20 CN CN2012100182392A patent/CN103217968A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201145714Y (en) * | 2007-11-23 | 2008-11-05 | 比亚迪股份有限公司 | Electronic control module testing apparatus and system |
| CN101615029A (en) * | 2008-06-27 | 2009-12-30 | 上海亿盟电气自动化技术有限公司 | Intelligent controller test system |
| CN101739022A (en) * | 2008-11-24 | 2010-06-16 | 比亚迪股份有限公司 | Performance test system and method for control unit of engine |
| US20110173499A1 (en) * | 2010-01-08 | 2011-07-14 | Atomic Energy Council-Institute Nuclear Energy Research | System of Testing Engineered Safety Feature Instruments |
| CN201690428U (en) * | 2010-06-01 | 2010-12-29 | 深圳市蓝韵实业有限公司 | Simple logical time sequence generating circuit |
| CN101968653A (en) * | 2010-08-19 | 2011-02-09 | 西安理工大学 | Console device detector and console device detection method |
| CN202067105U (en) * | 2011-03-30 | 2011-12-07 | 苏州市易德龙电器有限公司 | Extensible intelligent power source distributor |
| CN202815573U (en) * | 2012-01-20 | 2013-03-20 | 哈尔滨建成集团有限公司 | Electric control unit test system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529829A (en) * | 2013-10-31 | 2014-01-22 | 无锡市矽成微电子有限公司 | Test system for electric vehicle controller |
| CN114003021A (en) * | 2021-10-29 | 2022-02-01 | 中车大连机车研究所有限公司 | Function test bed for universal electric control unit of locomotive |
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Application publication date: 20130724 |