CN101382469A - Dynamic calibration apparatus for portable brake tester - Google Patents
Dynamic calibration apparatus for portable brake tester Download PDFInfo
- Publication number
- CN101382469A CN101382469A CNA200810218449XA CN200810218449A CN101382469A CN 101382469 A CN101382469 A CN 101382469A CN A200810218449X A CNA200810218449X A CN A200810218449XA CN 200810218449 A CN200810218449 A CN 200810218449A CN 101382469 A CN101382469 A CN 101382469A
- Authority
- CN
- China
- Prior art keywords
- brake tester
- turning axle
- dynamic calibration
- treatment module
- control treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a dynamic calibrating device of a portable braking tester, which comprises a control treatment module and a stander; a horizontal rotating shaft and a driving mechanism which drives the rotating shaft are movably arranged on the stander, the rotating shaft is provided with an acceleration sensor fixing mechanism and also an angle sensor which moves synchronously with the rotating shaft; and both the driving mechanism and the angle sensor are electrically connected with the control treatment module which is also provided with a connecting port which can be electrically connected with the braking tester to be calibrated. The device can realize dynamic calibration, with accurate and reliable calibration result, high calibration efficiency, and good operability and repeatability, can guarantee personal and property safety, and greatly reduces the cost of the dynamic calibration.
Description
Technical field
The present invention relates to a kind of dynamic calibration apparatus of portable brake tester.
Background technology
The dynamic calibration of portable brake performance tester, can carry out according to 7.2 of JJF 1168-2007 " portable brake performance tester calibrating standard " in theory at present, that is: select the test vehicle of a stable performance, by the requirement of related description book car speed is taken into account by the school portable brake performance tester and to be installed on the test vehicle together, and connect foot pedal.
Test site and method are pressed GB7258-2004 " motor vehicle security of operation technical conditions " respective specified.
When car speed is about 30km/h, 50km/h, carry out brake test, the average retardation rate that fully sends (be MFDD, below the identical) error of indication of each point, each time measurement is calculated in each duplicate measurements 3 times.
But there are the following problems for this calibration steps:
1, the test findings influence of factors such as vehicle performance, test site situation, vehicle driver's skill level and driving habits, weather that is put to the test is difficult to guarantee good test repeatability;
2, introduced metrograph in the test, be used for the speed and the operating range of experiment with measuring vehicle, the actual performance of metrograph directly influences test findings, and this dynamic calibration method belongs to relative method.
Therefore, domestic Measuring and testing mechanism only does static calibration to portable brake performance tester present stage, is difficult to carry out dynamic calibration.
Summary of the invention
The object of the present invention is to provide a kind of calibrating installation of portable brake tester, this device can carry out dynamic calibration to portable brake tester, calibration result accurately and reliably, the calibration efficiency height, operability and good reproducibility, can ensure the person and property safety, reduce the cost of dynamic calibration significantly.
The present invention is achieved through the following technical solutions:
A kind of dynamic calibration apparatus of portable brake tester, this calibrating installation comprises control treatment module and frame, the turning axle of the movable level that is provided with reaches and this is rotated shaft-driven driving mechanism on frame, on turning axle, be provided with the acceleration transducer fixed mechanism, also be provided with the angular transducer that is synchronized with the movement with turning axle, driving mechanism, angular transducer all are electrically connected with control treatment module, are provided with the connectivity port that can be electrically connected with brake tester to be calibrated on control treatment module.
Described control treatment module comprises PC and the single-chip microcomputer that is electrically connected mutually; PC is a PC, as desktop computer or laptop computer.
Described driving mechanism comprises stepper motor and the motor driver that is electrically connected with stepper motor, and this motor driver and described control treatment module are electrically connected.
Between described stepper motor and described turning axle, be provided with shaft coupling, between described angular transducer and described turning axle, also be provided with shaft coupling.
Between described stepper motor and described shaft coupling, be provided with speed reduction unit.
Described acceleration transducer fixed mechanism comprises overturn platform and is located at fixture on this overturn platform.
Between described overturn platform and described turning axle, be provided with governor motion.
Dynamic calibration method of the present invention comprises the steps: at least
A, the acceleration transducer of brake tester to be calibrated is installed on the acceleration transducer fixed mechanism;
B, control treatment module controlling and driving mechanism are rotated by the drive mechanism turning axle;
C, angular transducer transfer to control treatment module with the angle signal of turning axle that different time is surveyed, and brake tester transfers to control treatment module with different time institute measuring acceleration signal;
D, control treatment module are according to the angle signal of being imported, calculate actual deceleration degree-time curve, control treatment module is according to the acceleration signal of being imported, calculate brake tester actual measurement retarded velocity-time curve, and with actual deceleration degree-time curve with the actual measurement retarded velocity-time curve compare, by calculating the average retardation rate error of indication of fully sending.
Wherein, in described a step, described acceleration transducer is installed on the described acceleration transducer fixed mechanism, and described acceleration transducer is positioned at directly over the axis of described turning axle, in described b step, under the control of described control treatment module, described turning axle adopts relatively low rotating speed rotation.
It should be noted that described brake tester is a portable brake tester to be calibrated, described acceleration transducer is the acceleration transducer of this portable brake tester.
Description of drawings
Fig. 1 is the stereographic map of the dynamic calibration apparatus of portable brake tester;
Fig. 2 is the front elevation of Fig. 1;
Fig. 3 is the structured flowchart of the present invention when calibrating;
Description of reference numerals:
1, stepper motor, 2, speed reduction unit, 3, shaft coupling, 4, frame, 5, turning axle, 6, overturn platform, 7, governor motion, 8, shaft coupling, 9, angular transducer, 10, motor driver, 11, PC, 12, single-chip microcomputer, 13, brake tester, 14, the connectivity port, 15, acceleration transducer.
Embodiment
As shown in Figures 1 to 4, a kind of dynamic calibration apparatus of portable brake tester, this calibrating installation comprises control treatment module and frame 4, on frame 4 turning axle 5 of the movable level that is provided with and and driving mechanism that this turning axle 5 is driven, on turning axle 5, be provided with the acceleration transducer fixed mechanism, also be provided with the angular transducer 9 that is synchronized with the movement with turning axle 5, driving mechanism, angular transducer 9 all are electrically connected with control treatment module, are provided with the connectivity port 14 that can be electrically connected with brake tester 13 to be calibrated on control treatment module.
Described control treatment module comprises PC 11 (being commonly called as host computer) and the single-chip microcomputer 12 (being commonly called as slave computer) that is electrically connected mutually, described driving mechanism comprises stepper motor 1 and the motor driver 10 that is electrically connected with stepper motor 1, and this motor driver 10 is electrically connected with single-chip microcomputer 12; Between stepper motor 1 and turning axle 5, be provided with speed reduction unit 2 and shaft coupling 3, between angular transducer 9 and turning axle 5, also be provided with shaft coupling 8; Described acceleration transducer fixed mechanism comprises overturn platform 6 and is located at fixture (not shown) on this overturn platform 6, be provided with governor motion 7 between overturn platform 6 and turning axle 5.
The new dynamic calibration method of this practicality comprises the steps:
A, the acceleration transducer 15 of brake tester to be calibrated 13 is installed on the overturn platform 6;
Single-chip microcomputer 12 in b, the control treatment module is by motor driver 10 controlling and driving mechanisms, by 5 rotations of drive mechanism turning axle;
C, angular transducer 9 transfer to PC 11 with the angle signal of institute's turning axle that different time is surveyed 5, and brake tester 13 transfers to PC 11 with different time institute measuring acceleration signal;
D, PC 11 are according to the angle signal of being imported, calculate theoretical retarded velocity-time curve, PC 11 is according to the acceleration signal of being imported, calculate brake tester actual measurement retarded velocity-time curve, and with actual deceleration degree-time curve with the actual measurement retarded velocity-time curve compare, by calculating the MFDD error of indication of brake tester 13.
Wherein, in aforementioned a step, described acceleration transducer 15 is installed on the overturn platform 6, and described acceleration transducer 15 is positioned at directly over the axis of turning axle 5, in aforementioned b step, under the control of single-chip microcomputer 12, turning axle 5 adopts relatively low rotating speed rotation.
Particularly, the technical solution adopted in the present invention is: the variation of acceleration is by acceleration transducer 15 low speed rotation realization continuously in perpendicular of portable brake performance tester 13, according to retarded velocity in the car brakeing process and time relation, several desirable braking deceleration-time curves have been designed according to different initial velocity, PC 11 is converted into the control data coding, by single-chip microcomputer 12 control motor drivers 10, drive stepping motor 1 and speed reduction unit 2 drive overturn platform 6 low speed rotation (the initial and done state of overturn platform 6 is a horizontality) in perpendicular; PC 11 interconnects with angular transducer 9, the angle signal value of sampling angle sensor 9, and the corner-time data of record overturn platform 6 is converted to acceleration-time curve subsequently; When the acceleration transducer 15 of brake tester 13 is followed overturn platform 6 rotations, brake tester 13 is noted the acceleration-time curve of measurement, be transferred to PC 11, acceleration-time curve obtains speed-time curve by integration, integration can be apart from-time curve once more, and then can calculate the initial speed of braking of GB7258-2004 " motor vehicle security of operation technical conditions " (or its latest edition) and GA/T 485-2004 " portable brake performance tester " (or its latest edition) regulation, braking distance, the brake coordination time, braking ability evaluating values such as MFDD, by relatively drawing the various errors of indication of brake tester 13, finish the calibration of brake performance tester 13.
The present invention has following advantage:
1, need not special test road surface, test vehicle, driver and metrograph, whole dynamic calibration process is in the laboratory Finish, and realized automation, the efficient height, operability and good reproducibility can ensure the person and property safety;
2, owing to adopt absolute calibration, calibration result accurately and reliably;
3, can test with higher vehicle initial velocity (speed of a motor vehicle is greater than 50km/h);
4, decrease the cost of dynamic calibration.
Claims (8)
1, a kind of dynamic calibration apparatus of portable brake tester, it is characterized in that, this calibrating installation comprises control treatment module and frame, the turning axle of the movable level that is provided with reaches and this is rotated shaft-driven driving mechanism on frame, on turning axle, be provided with the acceleration transducer fixed mechanism, also be provided with the angular transducer that is synchronized with the movement with turning axle, driving mechanism, angular transducer all are electrically connected with control treatment module, are provided with the connectivity port that can be electrically connected with brake tester to be calibrated on control treatment module.
2, the dynamic calibration apparatus of portable brake tester according to claim 1 is characterized in that described control treatment module comprises PC and the single-chip microcomputer that is electrically connected mutually.
3, the dynamic calibration apparatus of portable brake tester according to claim 1 is characterized in that, described driving mechanism comprises stepper motor and the motor driver that is electrically connected with stepper motor, and this motor driver and described control treatment module are electrically connected.
4, as the dynamic calibration apparatus of portable brake tester as described in the claim 3, it is characterized in that, between described stepper motor and described turning axle, be provided with shaft coupling, between described angular transducer and described turning axle, also be provided with shaft coupling.
5, as the dynamic calibration apparatus of portable brake tester as described in the claim 4, it is characterized in that, between described stepper motor and described shaft coupling, be provided with speed reduction unit.
6, the dynamic calibration apparatus of portable brake tester according to claim 1 is characterized in that, described acceleration transducer fixed mechanism comprises overturn platform and is located at fixture on this overturn platform.
7, as the dynamic calibration apparatus of portable brake tester as described in the claim 6, it is characterized in that, between described overturn platform and described turning axle, be provided with governor motion.
8, a kind of dynamic calibration apparatus of portable brake tester, it is characterized in that, this calibrating installation comprises control treatment module and frame, the turning axle of the movable level that is provided with reaches and this is rotated shaft-driven driving mechanism on frame, on turning axle, be provided with the acceleration transducer fixed mechanism, the acceleration transducer of brake tester to be calibrated is installed on this acceleration transducer fixed mechanism, also be provided with the angular transducer that is synchronized with the movement with turning axle, driving mechanism, angular transducer, brake tester to be calibrated all are electrically connected with control treatment module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810218449XA CN101382469A (en) | 2008-10-17 | 2008-10-17 | Dynamic calibration apparatus for portable brake tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810218449XA CN101382469A (en) | 2008-10-17 | 2008-10-17 | Dynamic calibration apparatus for portable brake tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101382469A true CN101382469A (en) | 2009-03-11 |
Family
ID=40462426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810218449XA Pending CN101382469A (en) | 2008-10-17 | 2008-10-17 | Dynamic calibration apparatus for portable brake tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101382469A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832836A (en) * | 2010-04-28 | 2010-09-15 | 吉林大学 | Dynamic calibration device of drum reaction braking checkout stand |
| CN101943626A (en) * | 2010-08-19 | 2011-01-12 | 吉林大学 | Dynamic calibration device of counter-force roller braking bench based on hydraulic servo |
| CN101846589B (en) * | 2009-03-24 | 2013-06-05 | 京元电子股份有限公司 | Turnover testing module and testing system thereof |
| CN107024357A (en) * | 2017-05-04 | 2017-08-08 | 河南省计量科学研究院 | A kind of portable brake performance tester calibrating installation and its calibration method |
| WO2020114005A1 (en) * | 2018-12-05 | 2020-06-11 | 贝兹维仪器(苏州)有限公司 | Sensor test device having vibration and rotation functions |
-
2008
- 2008-10-17 CN CNA200810218449XA patent/CN101382469A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846589B (en) * | 2009-03-24 | 2013-06-05 | 京元电子股份有限公司 | Turnover testing module and testing system thereof |
| CN101832836A (en) * | 2010-04-28 | 2010-09-15 | 吉林大学 | Dynamic calibration device of drum reaction braking checkout stand |
| CN101832836B (en) * | 2010-04-28 | 2012-02-01 | 吉林大学 | Dynamic calibration device of drum reaction braking checkout stand |
| CN101943626A (en) * | 2010-08-19 | 2011-01-12 | 吉林大学 | Dynamic calibration device of counter-force roller braking bench based on hydraulic servo |
| CN101943626B (en) * | 2010-08-19 | 2012-08-08 | 吉林大学 | Dynamic calibration device of counter-force roller braking bench based on hydraulic servo |
| CN107024357A (en) * | 2017-05-04 | 2017-08-08 | 河南省计量科学研究院 | A kind of portable brake performance tester calibrating installation and its calibration method |
| WO2020114005A1 (en) * | 2018-12-05 | 2020-06-11 | 贝兹维仪器(苏州)有限公司 | Sensor test device having vibration and rotation functions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101373168B (en) | Dynamic calibration method of portable brake tester | |
| CN105307913B (en) | Method and apparatus for determining braking moment on braking equipment used for rail vehicle | |
| CN101173878B (en) | Static and dynamic acceleration testing device | |
| CN101382469A (en) | Dynamic calibration apparatus for portable brake tester | |
| CN201335773Y (en) | Dynamic calibrating device of portable braking tester | |
| CN107655700A (en) | A kind of determination method and device of road resistance of taxing | |
| CN109664762A (en) | A kind of vehicle speed-limiting control system and control method | |
| CN104502114A (en) | Automobile pedal mechanism force displacement testing stand | |
| WO2023010939A1 (en) | Dynamic calculation method and apparatus for mass of electric vehicle | |
| CN201955190U (en) | Automobile clutch pedal detecting instrument | |
| CN2708293Y (en) | Test-bed for automobile ABS performance | |
| CN208537186U (en) | A kind of tooling measuring braking system performance for simulating whole vehicle state | |
| CN103575933A (en) | Vibration engine revolution speed gauge calibration device and method | |
| CN103293007B (en) | A kind of agricultural vehicle performance detection method and detecting instrument thereof | |
| CN205538230U (en) | Automobile operation stability rack test test bench | |
| CN208476549U (en) | A kind of tooling measuring braking system performance for simulating whole vehicle state | |
| CN207095869U (en) | Vehicles Brake Test Bench dynamic calibration instrument | |
| CN208568218U (en) | The torsional rigidity test of vehicular platform of passenger car torsion beam | |
| CN106092613B (en) | A kind of brake pressure indirect measurement method based on rotary drum revolution speed sensing | |
| CN112781880B (en) | Starting jitter testing method for electric drive assembly | |
| CN207074107U (en) | Pedal assembly spring F S curve detection devices | |
| CN114236264B (en) | Anti-interference capability detection system of whole vehicle electronic power steering system | |
| CN104502113A (en) | Novel automobile mechanism force displacement test stand | |
| CN115482693A (en) | Training method and device for road test detection technology of commercial vehicle | |
| CN109425472A (en) | Pedal assembly spring F-S curve detection equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090311 |