CN109343516A - A method of measurement assessment engine controller AD conversion precision - Google Patents
A method of measurement assessment engine controller AD conversion precision Download PDFInfo
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- CN109343516A CN109343516A CN201811511242.1A CN201811511242A CN109343516A CN 109343516 A CN109343516 A CN 109343516A CN 201811511242 A CN201811511242 A CN 201811511242A CN 109343516 A CN109343516 A CN 109343516A
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- engine controller
- assessment engine
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
The invention discloses a kind of methods of measurement assessment engine controller AD conversion precision, this method is to input corresponding predeterminated voltage to each channel AD of controller respectively using the voltage output interface of HIL rack, to measure the conversion accuracy for assessing the channel AD compared with the predeterminated voltage in each channel AD is detected the port voltage that the channel AD obtains with monitoring software.Operation of the present invention is simple, high-efficient, workload is small.
Description
Technical field
The present invention relates to controller detection technique fields, more specifically, it relates to a kind of measurement assessment engine control
The method of device AD conversion precision.
Background technique
AD converter, that is, analog-digital converter or abbreviation ADC refer to an electronics by analog-signal transitions for digital signal
Element, common analog-digital converter are the digital signals that an input voltage signal is converted to an output.It is existing to hair
The AD lane testing of motivation controller is taken with the potentiometer in the Europe 0-1000 come the input voltage of adjusting controller, test
Process needs to be measured and recorded the virtual voltage of director port, while the end that Read Controller monitoring software is shown with multimeter
Mouth voltage, virtual voltage and port voltage are compared and seek deviation, to obtain the precision in the channel AD.
Existing test method has the disadvantage that: 1, needing to use potentiometer, need manually to adjust progress resistance tune
It saves to change given voltage, operation repeats cumbersome；2, the AD number of channels that engine controller needs to measure is more, heavy workload,
With potentiometer manual setting mode inefficiency.
Summary of the invention
The technical problem to be solved by the present invention is to be directed to the above-mentioned deficiency of the prior art, the present invention provides a kind of operation letter
The method of the measurement assessment engine controller AD conversion precision single, high-efficient, workload is small.
The technical scheme is that a kind of method of measurement assessment engine controller AD conversion precision, this method are
Each channel AD of controller is given to input corresponding predeterminated voltage respectively using the voltage output interface of HIL rack, it will be each described
The predeterminated voltage in the channel AD to measure assesses the channel AD compared with monitoring software detecting the port voltage that the channel AD obtains
Conversion accuracy.
As a further improvement, specifically measurement evaluation process includes that steps are as follows,
S1, the channel AD of the voltage output Interface and Controler of HIL rack is connected one to one using cable；
S2, the predeterminated voltage for setting each channel AD in HIL rack according to the measurement range in each channel AD；
S3, it each channel AD is detected according to monitoring software obtains the port voltage in each channel AD；
S4, it the predeterminated voltage in each channel AD is subtracted obtains the conversion essence in each channel AD divided by predeterminated voltage after port voltage
Degree.
Further, the predeterminated voltage is 0~5V analog voltage.
Further, the cable is flexible shielded cable.
Further, the HIL rack includes sequentially connected operation interface, processor and I/O interface module, described
Voltage output interface be set to the I/O interface module, the operation interface is used to set the default electricity in each channel AD
Pressure, and send the preset voltage value in each channel AD to the processor, the processor is by each preset voltage value
It is sent to the I/O interface module, the I/O interface module connects according to each preset voltage value from corresponding voltage output
Mouth output voltage.
Beneficial effect
Compared with prior art, the present invention having the advantage that are as follows:
1, easy to operate, measurement efficiency is high, gives predeterminated voltage using HIL rack manual function precision and gives the channel AD, only
It needs directly to give on HIL rack upper computer software, workload is small, the large number of channel engine controller AD
Predeterminated voltage can be once assigned, multiple channels AD can be disposably measured, measurement efficiency greatly improves；
2, accuracy is high, and HIL rack given voltage is accurate, can be used as standard voltage source, does not need to recycle multimeter
Opposite end mouthful virtual voltage measures.
Detailed description of the invention
Fig. 1 is the block diagram of traditional technology；
Fig. 2 is block diagram of the invention.
Specific embodiment
The present invention is described further for specific embodiment in reference to the accompanying drawing.
Refering to fig. 1-2, a method of measurement assessment engine controller AD conversion precision, this method is using HIL platform
The voltage output interface of frame gives each channel AD of controller to input corresponding predeterminated voltage respectively, by the default electricity in each channel AD
Pressure assesses the conversion accuracy in the channel AD with measurement compared with detecting the port voltage that the channel AD obtains with monitoring software.
Specific measurement evaluation process includes that steps are as follows,
S1, the channel AD of the voltage output Interface and Controler of HIL rack is connected one to one using cable；
S2, the predeterminated voltage for setting each channel AD in HIL rack according to the measurement range in each channel AD；
S3, it each channel AD is detected according to monitoring software obtains the port voltage in each channel AD；
S4, it the predeterminated voltage in each channel AD is subtracted obtains the conversion essence in each channel AD divided by predeterminated voltage after port voltage
Degree.
Predeterminated voltage is 0~5V analog voltage, can specifically be surveyed according to actual use situation setting, such as a certain channel AD
The analog voltage of amount is usually 0~3V, then can input 2.5V voltage to the channel AD；Cable is flexible shielded cable, with can
The interference and extraneous interference that cable is sold off is effectively reduced, guarantee measurement accuracy.
HIL rack includes sequentially connected operation interface, processor and I/O interface module, and voltage output interface is set to I/O
Interface module, operation interface are used to set the predeterminated voltage in each channel AD, and send the preset voltage value in each channel AD to handling
Each preset voltage value is sent I/O interface module by device, processor, and I/O interface module is according to each preset voltage value from corresponding
Voltage output interface output voltage.
Operation of the present invention is simple, and measurement efficiency is high, and it is logical to AD to give predeterminated voltage using HIL rack manual function precision
Road, it is only necessary to which directly given on HIL rack upper computer software, workload is small, large number of engine controller
The channel AD can once assign predeterminated voltage, can disposably measure multiple channels AD, and measurement efficiency greatly improves；Accuracy
Height, HIL rack given voltage is accurate, can be used as standard voltage source, do not need to recycle multimeter opposite end mouthful virtual voltage into
Row measurement.
What has been described above is only a preferred embodiment of the present invention, it should be pointed out that for those skilled in the art,
Without departing from the structure of the invention, several modifications and improvements can also be made, these all will not influence implementation of the present invention
Effect and patent practicability.
Claims (5)
1. a kind of method of measurement assessment engine controller AD conversion precision, it is characterised in that: this method is using HIL rack
Voltage output interface give each channel AD of controller to input corresponding predeterminated voltage respectively, by the default of each channel AD
Voltage assesses the conversion accuracy in the channel AD with measurement compared with detecting the port voltage that the channel AD obtains with monitoring software.
2. a kind of method of measurement assessment engine controller AD conversion precision according to claim 1, it is characterised in that:
Specific measurement evaluation process includes that steps are as follows,
S1, the channel AD of the voltage output Interface and Controler of HIL rack is connected one to one using cable；
S2, the predeterminated voltage for setting each channel AD in HIL rack according to the measurement range in each channel AD；
S3, it each channel AD is detected according to monitoring software obtains the port voltage in each channel AD；
S4, it the predeterminated voltage in each channel AD is subtracted obtains the conversion accuracy in each channel AD divided by predeterminated voltage after port voltage.
3. a kind of method of measurement assessment engine controller AD conversion precision according to claim 1, it is characterised in that:
The predeterminated voltage is 0~5V analog voltage.
4. a kind of method of measurement assessment engine controller AD conversion precision according to claim 2, it is characterised in that:
The cable is flexible shielded cable.
5. a kind of method of measurement assessment engine controller AD conversion precision according to any one of claims 1-4,
It is characterized by: the HIL rack includes sequentially connected operation interface, processor and I/O interface module, the voltage
Output interface is set to the I/O interface module, and the operation interface is used to set the predeterminated voltage in each channel AD, concurrently
Send the preset voltage value in each channel AD to the processor, each preset voltage value is sent institute by the processor
I/O interface module is stated, the I/O interface module exports electricity from corresponding voltage output interface according to each preset voltage value
Pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811511242.1A CN109343516A (en) | 2018-12-11 | 2018-12-11 | A method of measurement assessment engine controller AD conversion precision |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811511242.1A CN109343516A (en) | 2018-12-11 | 2018-12-11 | A method of measurement assessment engine controller AD conversion precision |
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| CN109343516A true CN109343516A (en) | 2019-02-15 |
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| CN201811511242.1A Pending CN109343516A (en) | 2018-12-11 | 2018-12-11 | A method of measurement assessment engine controller AD conversion precision |
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| CN105680860A (en) * | 2015-12-28 | 2016-06-15 | 深圳市思达仪表有限公司 | Circuit and method for improving analog-digital conversion precision of single chip computer |
| CN107132408A (en) * | 2017-06-28 | 2017-09-05 | 同济大学 | Commercial electric detonator tube resistor safety instrumentation and method |
| CN108663212A (en) * | 2018-04-25 | 2018-10-16 | 中汽研（天津）汽车工程研究院有限公司 | One kind is for engine pedestal to target vehicle run signal simulation system |
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|---|---|---|---|---|
| CN1354503A (en) * | 2000-11-22 | 2002-06-19 | 三菱电机株式会社 | Testing device and method for semiconductor integrated circuit |
| KR20070056929A (en) * | 2005-11-29 | 2007-06-04 | 요코가와 덴키 가부시키가이샤 | Ic tester |
| CN102435930A (en) * | 2011-09-29 | 2012-05-02 | 福建三元达软件有限公司 | Circuit board testing device and testing method thereof |
| CN102818984A (en) * | 2012-08-15 | 2012-12-12 | 浙江大学 | Method for rapidly testing optical fibre gyro signal processing circuit |
| CN103634009A (en) * | 2013-12-06 | 2014-03-12 | 上海贝电实业（集团）股份有限公司 | Method for improving analog-to-digital conversion accuracy of analog quantity collection device |
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Application publication date: 20190215 |
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