CN102519511B - Indication verification apparatus of automobile instrument and verification method thereof - Google Patents
Indication verification apparatus of automobile instrument and verification method thereof Download PDFInfo
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- CN102519511B CN102519511B CN2011104375277A CN201110437527A CN102519511B CN 102519511 B CN102519511 B CN 102519511B CN 2011104375277 A CN2011104375277 A CN 2011104375277A CN 201110437527 A CN201110437527 A CN 201110437527A CN 102519511 B CN102519511 B CN 102519511B
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Abstract
The invention discloses an indication verification apparatus of an automobile instrument which comprises an instrument controller, a memory, a stepping motor, and an instrument pointer controlled by the stepping motor. The instrument controller is connected with the memory, and an output terminal of the instrument controller is connected with the stepping motor. The above structure and method are employed, and the structure and method have the following advantages: (1) firstly, motor step values of a plurality of scale points of the instrument are calibrated, then a scale value between each two adjacent scale points is calibrated, and accurate precision of instrument pointer indication scale is ensured; (2) the structure and the method are suitable for a plurality of automobile instruments.
Description
Technical field
The present invention relates to the automobile instrument technical field, particularly a kind of indication calibration equipment and method of calibration thereof of automobile instrument.
Background technology
Automobile instrument adopts pointer-type more at present, by stepper motor drive finger, is realized the indication of each meter pointer.But due to the machinery assembling, the instrument board, the othernesses such as motor, when producing, if the number of motor steps of each scale of instrument is not adjusted to control, that will cause each gauge outfit indication of each instrument to have than relatively large deviation, and the pointer pointing accuracy is poor, affects client's judgement.
Summary of the invention
Technical matters to be solved by this invention is, for the deficiencies in the prior art, to provide indication calibration equipment and the method for calibration thereof of the automobile instrument that a kind of pointer pointing accuracy is high.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of indication calibration equipment of automobile instrument, the gauge pointer that comprises instrument controller, storer, stepper motor, step motor control, described instrument controller is connected with storer, and the output terminal of described instrument controller is connected with stepper motor.
Described instrument controller adopts Micro-processor MCV.
Described stepper motor is connected with described gauge pointer.
A kind of method of calibration of indication calibration equipment of automobile instrument, described method comprises the following steps:
A) the meter dial value is divided into a plurality of calibration points, the acquiescence motor step numerical value of the first calibration points in the instrument controller read memory, the control step motor is walked corresponding step number, pointer is indicated to position corresponding to this step number, if there is deviation the first calibration points position of pointer and instrument, namely adjust motor step numerical value, until the pointer indication is consistent with the first calibration points, and the motor step numerical value after calibrating is written in corresponding storage address unit, the acquiescence motor step numerical value before covering;
B) next calibration points is carried out to the calibration as step a, until complete the calibration of a plurality of calibration points;
C) the motor step numerical value of the scale value between every two adjacent calibration points is calculated.
In described step c, computing formula is: establish input signal X0 between X1 and X2, the motor step numerical value that X1 and X2 are corresponding is respectively Y1 and Y2, described input signal X0 motor step numerical value Y0=Y2+k (X0-X2) now, wherein k=(Y1-Y2)/(X1-X2).
The present invention adopts said structure and method, has the following advantages: 1, first the motor step numerical value of a plurality of calibration points of instrument is calibrated, then often the scale value between adjacent two calibration points is calibrated, and has guaranteed the accurate precision of gauge pointer indicating graduation; 2, applicable multiple automobile instrument.
The accompanying drawing explanation
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments;
Fig. 1 is logical organization block diagram of the present invention;
Fig. 2 is circuit structure diagram of the present invention;
Fig. 3 is the software flow pattern of a plurality of calibration points checking procedures in the present invention;
Fig. 4 is the checking procedure software flow pattern of scale value between adjacent calibration points in the present invention;
In Fig. 1～Fig. 2,1, instrument controller; 2, storer; 3, stepper motor.
Embodiment
Indication calibration equipment as Fig. 1～a kind of automobile instrument shown in Figure 2, the gauge pointer that comprises instrument controller 1, storer 2, stepper motor 3, step motor control, instrument controller 1 is connected with storer 2, and the output terminal of instrument controller 1 is connected with stepper motor 3.Instrument controller 1 adopts Micro-processor MCV.MCU can adopt chip AT89C51.Stepper motor 3 is connected with described gauge pointer.
A kind of method of calibration of indication calibration equipment of automobile instrument, method comprises the following steps:
A) the meter dial value is divided into a plurality of calibration points, the acquiescence motor step numerical value of the first calibration points in the instrument controller read memory, the control step motor is walked corresponding step number, pointer is indicated to position corresponding to this step number, if there is deviation the first calibration points position of pointer and instrument, namely adjust motor step numerical value, until the pointer indication is consistent with the first calibration points, and the motor step numerical value after calibrating is written in corresponding storage address unit, the acquiescence motor step numerical value before covering;
B) next calibration points is carried out to the calibration as step a, until complete the calibration of a plurality of calibration points;
C) the motor step numerical value of the scale value between every two adjacent calibration points is calculated.
In step c, computing formula is: establish input signal X0 between X1 and X2, the motor step numerical value that X1 and X2 are corresponding is respectively Y1 and Y2, described input signal X0 motor step numerical value Y0=Y2+k (X0-X2) now, wherein k=(Y1-Y2)/(X1-X2).
Figure 3 shows that the software flow pattern of a plurality of calibration points checking procedures in the present invention;
In step 100, step starts, and flow process enters step 101;
In step 101, system communicates by diagnosis and instrument, and flow process enters step 102;
In step 102, system is sent diagnostic command, the acquiescence motor step numerical value of the first calibration points in the instrument controller read memory, and flow process enters step 103;
In step 103, instrument controller receives diagnostic command, and Driving Stepping Motor is walked corresponding step number, and pointer is indicated to position corresponding to this step number, and flow process enters step 104;
In step 104, system is adjusted motor step numerical value, sends the number of motor steps after adjusting by diagnosis, and flow process enters step 105;
In step 105, instrument controller receives diagnostic command, the number of motor steps after Driving Stepping Motor is walked to adjust, and pointer is indicated to position corresponding to this step number, and flow process enters step 106;
In step 106, the motor step numerical value after calibration is written in corresponding storage address unit, the acquiescence motor step numerical value before covering, flow process enters step 107;
In step 107, next calibration points is calibrated, until complete the calibration of a plurality of calibration points.
Fig. 4 is the checking procedure software flow pattern of scale value between adjacent calibration points in the present invention;
In step 200, step starts, and flow process enters step 201;
In step 201, detect external input signal, flow process enters step 202;
In step 202, judge that this input signal is affiliated interval, flow process enters step 203;
In step 203, calculate the motor step numerical value that this signal is corresponding, flow process enters step 204;
In step 204, the control step motor is walked corresponding step number.
The present invention is used for various automobile instrument gauge outfits, because each gauge outfit table board of automobile instrument all can have corresponding scale value, and as fuel gauge, full oil level F, 7/8,3/4,5/8,1/2,1/4, alarm set point, empty oil level E etc.The fuel gauge of take is example.Choose wherein six calibration points and expire oil level F, 3/4,1/2,1/4, alarm set point, empty oil level E as corresponding number of motor steps checkpoint.Wherein, full oil level F is the first calibration points, and 3/4 oil level is the second calibration points, the like.In storer, input signal corresponding to these six calibration points and corresponding acquiescence motor step numerical value are being stored in corresponding address, when doing the number of motor steps verification, at first need to communicate by diagnosis and instrument, start communication.Diagnosis of partial can be with reference to the KWP2000 diagnosing protocol.At first oil level F is expired in verification.After communicating by letter successfully, then another sends diagnostic command, in this order, contains the acquiescence motor step numerical value Y1 of full oil level F.After instrument received this order, the control step motor was walked corresponding step number, and pointer is indicated to position corresponding to this step number.If with the full oil level F of scale of table board, deviation is arranged, namely adjust the motor step numerical value in diagnostic command, increase or reduce, until the pointer indication is consistent with scale mark.At this moment the motor step numerical value after calibrating is written in corresponding storage address unit, the default value Y1 before covering.After the complete scale of verification, the next checkpoint of verification and then, until complete all checkpoints.
After completing the motor for instrument verification, instrument operation main control software.When instrument connects, external input signal X0 detected, main control software calculates the interval range that judgement X0 is in the corresponding input signal X of storer, the motor step numerical value of read memory.In the interval range of an input signal X, motor step numerical value is done linear process.Calculate like this and now input corresponding motor step numerical value Y0.Between X1 and X2, so corresponding input signal motor step numerical value at this moment can calculate Y0=Y2+k (X0-X2), wherein k=(Y1-Y2)/(X1-X2) such as input signal X0.
Due to Y1, the motor step numerical value such as Y2, all through verification, by similar method, just can calculate the motor step numerical value that all external input signals are corresponding relatively accurately.Thereby also just guaranteed corresponding certain input signal, realized that motor for instrument accurately indicates.
The above is exemplarily described the present invention by reference to the accompanying drawings; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as the various improvement of having adopted method design of the present invention and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection scope of the present invention.
Claims (2)
1. the method for calibration of the indication calibration equipment of an automobile instrument, the indication calibration equipment of described automobile instrument comprises the gauge pointer of instrument controller (1), storer (2), stepper motor (3), step motor control, described instrument controller (1) is connected with storer (2), the output terminal of described instrument controller (1) is connected with stepper motor (3), described instrument controller (1) adopts Micro-processor MCV, described stepper motor (3) is connected with described gauge pointer, is characterised in that: described method comprises the following steps:
A) the meter dial value is divided into a plurality of calibration points, the acquiescence motor step numerical value of the first calibration points in the instrument controller read memory, the control step motor is walked corresponding step number, pointer is indicated to position corresponding to this step number, if there is deviation the first calibration points position of pointer and instrument, namely adjust motor step numerical value, until the pointer indication is consistent with the first calibration points, and the motor step numerical value after calibrating is written in corresponding storage address unit, the acquiescence motor step numerical value before covering;
B) next calibration points is carried out to the calibration as step a, until complete the calibration of a plurality of calibration points;
C) the motor step numerical value of the scale value between every two adjacent calibration points is calculated.
2. the method for calibration of the indication calibration equipment of a kind of automobile instrument according to claim 1, it is characterized in that: in described step c, computing formula is: establish input signal X0 between X1 and X2, the motor step numerical value that X1 and X2 are corresponding is respectively Y1 and Y2, described input signal X0 motor step numerical value Y0=Y2+k(X0-X2 now), k=(Y1-Y2 wherein)/(X1-X2).
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| CN2011104375277A CN102519511B (en) | 2011-12-23 | 2011-12-23 | Indication verification apparatus of automobile instrument and verification method thereof |
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| CN2011104375277A CN102519511B (en) | 2011-12-23 | 2011-12-23 | Indication verification apparatus of automobile instrument and verification method thereof |
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| CN102519511B true CN102519511B (en) | 2013-11-27 |
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Families Citing this family (8)
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| CN106404033A (en) * | 2016-08-03 | 2017-02-15 | 重庆盟讯电子科技有限公司 | Automobile instrument panel automatic detection system based on angle sensor |
| CN109682443A (en) * | 2017-10-19 | 2019-04-26 | 华晨汽车集团控股有限公司 | A kind of control method of automobile fuel gauge |
| CN108663079A (en) * | 2018-04-10 | 2018-10-16 | 航天科技控股集团股份有限公司 | A kind of full-automatic pointer regulation method |
| CN108507604A (en) * | 2018-04-10 | 2018-09-07 | 航天科技控股集团股份有限公司 | A kind of full-automatic pointer regulation system |
| CN109238338A (en) * | 2018-09-28 | 2019-01-18 | 大陆汽车车身电子系统（芜湖）有限公司 | A method of calibration instrument cluster pointer |
| CN110207744A (en) * | 2019-06-27 | 2019-09-06 | 上海仪电汽车电子系统有限公司 | A kind of Meter Test system and method |
| CN110865078A (en) * | 2019-11-27 | 2020-03-06 | 航天科技控股集团股份有限公司 | System and method for detecting pointer indication accuracy |
| CN112781642B (en) * | 2020-12-30 | 2022-09-27 | 北京青云航空仪表有限公司 | Calibration method of pointer instrument |
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| GB1241942A (en) * | 1967-04-15 | 1971-08-04 | John Rawcliffe | Improvements in or relating to the calibration of instruments |
| AUPQ592700A0 (en) * | 2000-02-29 | 2000-03-23 | Australian Arrow Pty Ltd | Instrument reference system |
| JP3813587B2 (en) * | 2003-01-30 | 2006-08-23 | 東芝エルエスアイシステムサポート株式会社 | Motor control circuit, semiconductor integrated circuit, pointing device, and motor control method |
| CN201060207Y (en) * | 2007-05-30 | 2008-05-14 | 刘海泉 | Stepping motor type engine speed hours meter |
| CN201352125Y (en) * | 2009-02-11 | 2009-11-25 | 哈尔滨威帝汽车电子有限公司 | Stepping motor automobile combined instrument |
| CN101493346B (en) * | 2009-02-16 | 2012-09-19 | 中国人民解放军空军航空大学 | Indicating instrument precision correcting method and off-line maintenance bench |
| CN102129217B (en) * | 2010-11-25 | 2013-02-06 | 埃泰克汽车电子(芜湖)有限公司 | Device for verifying accuracy of automobile instrument clock and verifying method thereof |
| CN202372199U (en) * | 2011-12-23 | 2012-08-08 | 埃泰克汽车电子(芜湖)有限公司 | Indication calibrating device of automobile instrument |
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Owner name: BOSCH AUTOMOBILE MULTIMEDIA (WUHU) CO., LTD. Free format text: FORMER OWNER: EITAIKE AUTOCAR ELECTRONICS (WUHU) CO., LTD. Effective date: 20131205 |
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Effective date of registration: 20131205 Address after: 241000 Anhui city of Wuhu Province Silver Lake Economic and Technological Development Zone No. 48 North Road Patentee after: BOSCH multimedia (Wuhu) Co., Ltd. Address before: 241000 Anhui city of Wuhu Province Silver Lake Economic and Technological Development Zone No. 48 North Road Patentee before: ATECH Automotive (Wuhu) Co., Ltd. |
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Address after: 241000 Anhui city of Wuhu Province Silver Lake Economic and Technological Development Zone No. 48 North Road Patentee after: Bertek automotive electronics (Wuhu) Co., Ltd Address before: 241000 Anhui city of Wuhu Province Silver Lake Economic and Technological Development Zone No. 48 North Road Patentee before: Bosch Car Multimedia (Wuhu) Co.,Ltd. |