CN206593590U - A kind of steering wheel angle measurement apparatus for driving data acquisition system - Google Patents
A kind of steering wheel angle measurement apparatus for driving data acquisition system Download PDFInfo
- Publication number
- CN206593590U CN206593590U CN201720162396.9U CN201720162396U CN206593590U CN 206593590 U CN206593590 U CN 206593590U CN 201720162396 U CN201720162396 U CN 201720162396U CN 206593590 U CN206593590 U CN 206593590U
- Authority
- CN
- China
- Prior art keywords
- foil gauge
- steering wheel
- wheel angle
- data acquisition
- bridge circuit
- 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.)
- Expired - Fee Related
Links
Landscapes
- Steering Controls (AREA)
Abstract
The utility model discloses a kind of steering wheel angle measurement apparatus for driving data acquisition system, measurement apparatus includes dynamometry housing, strain tube and data acquisition and control module, wherein shaft gear is equipped with dynamometry housing, the central shaft of shaft gear is connected with the rotating shaft of steering wheel for vehicle, shaft gear is meshed with being located at the rack of dynamometry housing side, strain tube is located at the respective side of rack, spring is equipped with strain tube, spring is connected with rack, foil gauge is also equipped with strain tube, foil gauge is connected with data collection and control module, data collection and control module can receive and handle the data that foil gauge is transmitted.Measuring method is：Step one：Calibration experiment is carried out in advance；Step 2：Fitting function is set in advance in steering wheel angle analog controller；Step 3：Calculate steering wheel rotation angle.Beneficial effect：It is easy to separation to assemble and Measuring error；Effectively reduce measuring system cost.
Description
Technical field
The utility model is related to a kind of steering wheel angle measurement apparatus, more particularly to a kind of to be used for driving data acquisition system
Steering wheel angle measurement apparatus.
Background technology
Currently, the acquisition technique of driving data is basis and the necessary links of driver's behavioral study, in running car
The behavioral study of driver has great significance, and the relevant information for obtaining driver's operation steering wheel is during driving data is gathered
An important ring.Driver rotate steering wheel whether and corresponding rotational angle all directly reflect driver manipulation be intended to
And vehicle running state.Existing steering wheel angle measurement apparatus and method for driving data acquisition system, which is often used, to be turned
Angle transducer, measuring system cost is high, and is difficult to the accurate measurement of steering wheel angle.China Patent Publication No. is
CN104236449A, publication date is 2014.12.24, in the invention that a kind of entitled steering wheel angle sensor is shown
Hold, rotational angle is obtained by handling the pulse signal that three magnet-sensitive elements are produced using photoelectric coding principle, to using ring
Border proposes higher requirement, and shock resistance is poor.
The content of the invention
The purpose of this utility model be in order to solve present in existing driving data acquisition system measurement cost it is high and
A kind of steering wheel angle for driving data acquisition system for being difficult to the problem of steering wheel angle is accurately measured and providing
Measurement apparatus.
The steering wheel angle measurement apparatus for driving data acquisition system that the utility model is provided includes dynamometry shell
Shaft gear, the central shaft and vehicle of shaft gear are equipped with body, strain tube and data acquisition and control module, wherein dynamometry housing
The rotating shaft of steering wheel is connected, and shaft gear is meshed with being located at the rack of dynamometry housing side, and strain tube is located at the correspondence of rack
Spring is equipped with side, strain tube, spring is connected with rack, foil gauge is also equipped with strain tube, foil gauge is adopted with data
Collection and control module are connected, and data collection and control module can receive and handle the data that foil gauge is transmitted.
The modulus of shaft gear is 2.5, and provided with seven teeth, shaft gear is assembled in dynamometry housing by the bearing at two ends,
Bearing is deep groove ball bearing 1622.
The modulus of rack is 2.5, and provided with 24 teeth, the two ends of rack are spacing provided with smooth section progress.
The position dress of correspondence shaft gear in fixed seat, fixed seat is provided with the position of the bottom correspondence shaft gear of dynamometry housing
Equipped with holddown spring.
Foil gauge is provided with eight, wherein the first foil gauge and the second foil gauge are located on the lateral wall on strain tube top, the
Three foil gauges and the 4th foil gauge are symmetrically arranged on the lateral wall of strain tube bottom, and the first foil gauge and the second foil gauge are connected to
Between a points and b points of both arms half-bridge circuit, the 3rd foil gauge and the 4th foil gauge are connected to the c points and d points of both arms half-bridge circuit
Between, the 5th foil gauge and the 6th foil gauge are connected between a points and d points of both arms half-bridge circuit, in both arms half-bridge circuit
B points and c points between be connected with the 7th foil gauge and the 8th foil gauge, data collection and control module should by wire and first
Become piece, the second foil gauge, the 3rd foil gauge and the 4th foil gauge to be connected.
Include power supply, bridge circuit, steering wheel angle analog controller, master control switch in data collection and control module
And protective resistance, wherein power supply directly powers for bridge circuit, and the voltage of bridge circuit output acts on steering wheel angle simulation
On controller, master control switch is located on the connection line of power supply and bridge circuit, and protective resistance is located at bridge circuit and steering wheel
On the connection line of corner simulation controller.
The steering wheel rotation angle measurement method for driving data acquisition system that the utility model is provided, its method is such as
It is lower described：
Step one：Calibration experiment is carried out in advance, determines to be fitted between bridge circuit output voltage and steering wheel rotation angle
Function；
Step 2：Fitting function between output voltage and steering wheel rotation angle is set in advance in steering wheel angle mould
Intend in controller；
Step 3：When driver rotates steering wheel, pass through the fitting set in advance in steering wheel angle analog controller
Function calculates steering wheel rotation angle.
Foil gauge, power supply, steering wheel angle analog controller, master control switch and protective resistance described in the utility model
It is the assembling of existing equipment, therefore, concrete model and specification are not repeated further.
Operation principle of the present utility model：
When driver rotate steering wheel when, shaft gear pinion rack motion while compression or elongation strain cylinder in
Spring, so that strain tube is because stress is of different sizes and produces different degrees of miniature deformation, miniature deformation changes assembling
The resistance size of foil gauge, causes the change of voltage Y in both arms half-bridge circuit on strain tube lateral wall, so that passing through
The fitting function set in advance in steering wheel angle analog controller calculates steering wheel rotation angle.
The beneficial effects of the utility model：
The measurement apparatus that the utility model is provided is simple in construction, using being detachably connected between each part, is easy to point
From assembling and Measuring error；And the accurate survey of steering wheel rotation angle is realized in the case of without using angular transducer
Amount, effectively reduces measuring system cost；The measurement apparatus and method that the utility model is provided are scientific research, teaching has been provided
A kind of steering wheel angle measurement apparatus and method for driving data acquisition system of effect, is realizing that steering wheel angle accurately surveys
Measurement cost is also saved while amount.
Brief description of the drawings
Fig. 1 is device overall structure diagram described in the utility model.
Fig. 2 is device decomposition texture schematic diagram described in the utility model.
Fig. 3 is dynamometry housing cross section structure diagram described in the utility model.
Fig. 4 is that both arms half-bridge circuit described in the utility model arranges schematic diagram.
Fig. 5 is data collection and control modular structure schematic diagram described in the utility model.
1st, dynamometry housing 2, strain tube 3, data collection and control module 4, shaft gear 5, central shaft 6, rack 7,
Spring 8, bearing 9, smooth section 10, fixed seat 11, holddown spring 12, the first foil gauge 13, the second foil gauge 14,
Three foil gauges 15, the 4th foil gauge 16, the 5th foil gauge 17, the 6th foil gauge 18, the strain of the 7th foil gauge the 19, the 8th
Piece 20, power supply 21, bridge circuit 22, steering wheel angle analog controller 23, master control switch 24, protective resistance.
Embodiment
Refer to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5：
The steering wheel angle measurement apparatus for driving data acquisition system that the utility model is provided includes dynamometry shell
Shaft gear 4, the central shaft of shaft gear 4 are equipped with body 1, strain tube 2 and data acquisition and control module 3, wherein dynamometry housing 1
5 are connected with the rotating shaft of steering wheel for vehicle, and shaft gear 4 is meshed with being located at the rack 6 of the side of dynamometry housing 1, and strain tube 2 is located at
Spring 7 is equipped with the respective side of rack 6, strain tube 2, spring 7 is connected with rack 6, strain is also equipped with strain tube 2
Piece, foil gauge is connected with data collection and control module 3, and data collection and control module 3 can receive and handle foil gauge
The data transmitted.
The modulus of shaft gear 4 is 2.5, and provided with seven teeth, shaft gear 4 is assembled in dynamometry housing 1 by the bearing 8 at two ends
Interior, bearing 8 is deep groove ball bearing 1622.
The modulus of rack 6 is 2.5, provided with 24 teeth, and the two ends of rack 6 carry out spacing provided with smooth section 9.
Correspondence shaft gear 4 in fixed seat 10, fixed seat 10 is provided with the position of the bottom correspondence shaft gear 4 of dynamometry housing 1
Position be equipped with holddown spring 11.
Foil gauge is provided with eight, wherein the first foil gauge 12 and the second foil gauge 13 are located at the lateral wall on the top of strain tube 2
On, the 3rd foil gauge 14 and the 4th foil gauge 15 are symmetrically arranged on the lateral wall of the bottom of strain tube 2, the first foil gauge 12 and second
Foil gauge 13 is connected between a of both arms half-bridge circuit points and b points, and the 3rd foil gauge 14 and the 4th foil gauge 15 are connected to both arms
Between the c points and d points of half-bridge circuit, the 5th foil gauge 16 and the 6th is connected between a points and d points of both arms half-bridge circuit should
Become piece 17, the 7th foil gauge 18 and the 8th foil gauge 19, data acquisition are connected between the b points and c points of both arms half-bridge circuit
And control module 3 passes through wire and the first foil gauge 12, the second foil gauge 13, the 3rd foil gauge 14 and the phase of the 4th foil gauge 15
Even.
Include in data collection and control module 3 power supply 20, bridge circuit 21, steering wheel angle analog controller 22,
Master control switch 23 and protective resistance 24, wherein power supply 20 are directly powered for bridge circuit 21, and the voltage that bridge circuit 21 is exported is made
With on steering wheel angle analog controller 22, master control switch 23 is located at power supply 20 with the connection line of bridge circuit 21, protecting
Shield resistance 24 is located on the connection line of bridge circuit 21 and steering wheel angle analog controller 22.
The steering wheel rotation angle measurement method for driving data acquisition system that the utility model is provided, its method is such as
It is lower described：
Step one：Calibration experiment is carried out in advance, determines to intend between the output voltage of bridge circuit 21 and steering wheel rotation angle
Close function；
Step 2：Fitting function between output voltage and steering wheel rotation angle is set in advance in steering wheel angle mould
Intend in controller 22；
Step 3：When driver rotates steering wheel, pass through the plan set in advance in steering wheel angle analog controller 22
Close function and calculate steering wheel rotation angle.
Foil gauge, power supply 20, steering wheel angle analog controller 22, master control switch 23 and guarantor described in the utility model
Shield resistance 24 is the assembling of existing equipment, therefore, and concrete model and specification are not repeated further.
Operation principle of the present utility model：
When driver rotates steering wheel, the pinion rack 6 of shaft gear 4 compression or elongation strain cylinder 2 while motion
Interior spring 7, so that strain tube 2 is because stress is of different sizes and produces different degrees of miniature deformation, miniature deformation changes
The resistance size of foil gauge on the lateral wall of strain tube 2 is assemblied in, causes the change of voltage Y in both arms half-bridge circuit, from
And make to calculate steering wheel rotation angle by the fitting function set in steering wheel angle analog controller 22 in advance.
In the rating test of the utility model measuring method, bridge circuit output voltage Y is obtained by voltmeter measurement.
Fitting function acquisition methods (utilizing taylor multinomials) are as described below：
Experimental calibration obtains m group bridge circuit output voltages and steering wheel angle data：
| k | 1 | 2 | … | m |
| Steering wheel angle x | x1 | x2 | … | xm |
| Output voltage Y | Y1 | Y2 | … | Ym |
Independent variable vector is built in software matlab：Steering wheel angle x=[x1、x2 … xm], input m group corners are defeated
Enter data；Build the vectorial bridge circuit output voltage of dependent variable：Y=[Y1、Y2 … Ym], input corresponding m groups electric bridge output electricity
Pressure.
The exponent number c of fit equation is determined by following matlab programs first:
For i=1:5
y2=polyfit (x, y, i)；
Y=polyval (y2,x)；
if sum(Y-y)2<0.1% inequality 1, c=i% determines fit equation exponent number c value break；end；end；
Fit equation exponent number c of the exponent number of fit equation when error amount quadratic sum is less than 0.1 is now obtained, if needed
Higher precision is wanted to change the numerical value of constant term on the right side of inequality 1.
The following input function in matlab windows：
y1=polyfit (x, y, c)
Polynomial fit function coefficient can be obtained by pressing enter key：
a0、a1……、an
aiIt is corresponding xn-iCoefficient, so just can be written can obtain fitting function：
Wherein n is fit equation exponent number.
Obtained after the fitting function between electric 21 output voltages of electric bridge and steering wheel angle, will be fitted by calibration experiment
Function is set in advance in steering wheel angle analog controller 22.Hereafter, electricity is sent into steering wheel angle analog controller 22
After the output voltage of bridge circuit 21, steering wheel angle analog controller 22 is exportable corresponding steering wheel angle signal, that is, is obtained
Steering wheel rotation angle.
Claims (6)
1. a kind of steering wheel angle measurement apparatus for driving data acquisition system, it is characterised in that：Include dynamometry housing,
Shaft gear, central shaft and the vehicle side of shaft gear are equipped with strain tube and data acquisition and control module, wherein dynamometry housing
It is connected to the rotating shaft of disk, shaft gear is meshed with being located at the rack of dynamometry housing side, and strain tube is located at the respective side of rack,
Spring is equipped with strain tube, spring is connected with rack, is also equipped with foil gauge on strain tube, foil gauge and data acquisition and
Control module is connected, and data collection and control module can receive and handle the data that foil gauge is transmitted.
2. a kind of steering wheel angle measurement apparatus for driving data acquisition system according to claim 1, its feature
It is：The modulus of described shaft gear is 2.5, and provided with seven teeth, shaft gear is assembled in dynamometry housing by the bearing at two ends
Interior, bearing is deep groove ball bearing 1622.
3. a kind of steering wheel angle measurement apparatus for driving data acquisition system according to claim 1, its feature
It is：The modulus of described rack is 2.5, and provided with 24 teeth, the two ends of rack are spacing provided with smooth section progress.
4. a kind of steering wheel angle measurement apparatus for driving data acquisition system according to claim 1, its feature
It is：The portion of correspondence shaft gear in fixed seat, fixed seat is provided with the position of the bottom correspondence shaft gear of described dynamometry housing
Position is equipped with holddown spring.
5. a kind of steering wheel angle measurement apparatus for driving data acquisition system according to claim 1, its feature
It is：Described foil gauge is provided with eight, wherein the first foil gauge and the second foil gauge are located on the lateral wall on strain tube top,
3rd foil gauge and the 4th foil gauge are symmetrically arranged on the lateral wall of strain tube bottom, the first foil gauge and the connection of the second foil gauge
Between a points and b points of both arms half-bridge circuit, the 3rd foil gauge and the 4th foil gauge are connected to the c points and d of both arms half-bridge circuit
Between point, the 5th foil gauge and the 6th foil gauge are connected between a points and d points of both arms half-bridge circuit, in both arms half-bridge electricity
The 7th foil gauge and the 8th foil gauge are connected between the b points and c points on road, data collection and control module passes through wire and first
Foil gauge, the second foil gauge, the 3rd foil gauge and the 4th foil gauge are connected.
6. a kind of steering wheel angle measurement apparatus for driving data acquisition system according to claim 1, its feature
It is：Include power supply, bridge circuit, steering wheel angle analog controller, master control in described data collection and control module
Switch and protective resistance, wherein power supply are directly powered for bridge circuit, and the voltage of bridge circuit output acts on steering wheel angle
On analog controller, master control switch is located on the connection line of power supply and bridge circuit, and protective resistance is located at bridge circuit with turning
To on the connection line of disk corner simulation controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720162396.9U CN206593590U (en) | 2017-02-23 | 2017-02-23 | A kind of steering wheel angle measurement apparatus for driving data acquisition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720162396.9U CN206593590U (en) | 2017-02-23 | 2017-02-23 | A kind of steering wheel angle measurement apparatus for driving data acquisition system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206593590U true CN206593590U (en) | 2017-10-27 |
Family
ID=60125454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720162396.9U Expired - Fee Related CN206593590U (en) | 2017-02-23 | 2017-02-23 | A kind of steering wheel angle measurement apparatus for driving data acquisition system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206593590U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006337A (en) * | 2019-03-20 | 2019-07-12 | 安徽中科大国祯信息科技有限责任公司 | A kind of gatage sensor |
-
2017
- 2017-02-23 CN CN201720162396.9U patent/CN206593590U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006337A (en) * | 2019-03-20 | 2019-07-12 | 安徽中科大国祯信息科技有限责任公司 | A kind of gatage sensor |
| CN110006337B (en) * | 2019-03-20 | 2023-10-03 | 安徽中科大国祯信息科技有限责任公司 | Gate opening sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106839970B (en) | A kind of steering wheel angle measurement apparatus and method for driving data acquisition system | |
| CN105151047B (en) | A kind of automobile side slip angle measurement method | |
| CN103968976A (en) | System and method for detecting vehicle wheel movement state vector | |
| CN101893472B (en) | Method and device for measuring tonnage of automobile | |
| TW201307145A (en) | Pedaling torque sensor device for each cyclist's leg and power meter apparatus | |
| CN101608960B (en) | Method for determining paste position of strain gauge of sensor | |
| CN206593590U (en) | A kind of steering wheel angle measurement apparatus for driving data acquisition system | |
| EP2682733A1 (en) | Method and system for estimating the effort generated by the contact of a tire with the road in an instrumented tire | |
| CN111198062A (en) | Strain type six-dimensional force sensor | |
| EP3628377A1 (en) | Direct force measurement device for crank | |
| CN104075832B (en) | A kind of sensor construction for Wheel axle identifier, axle identification method and system | |
| CN203869794U (en) | Wheel motion state vector acquisition apparatus | |
| CN210981808U (en) | Steering shaft power-assisted automobile electric power steering system test bed | |
| CN106335584A (en) | Double-wheel balance vehicle control system | |
| CN207173874U (en) | A kind of power monitoring sensor for bicycle pedal | |
| CN206648764U (en) | A kind of automobile steering gear rack force measuring device | |
| CN205891147U (en) | Helping hand bicycle central axis formula torque sensor | |
| CN1220037C (en) | Miniature all-plane 6D force and moment sensor | |
| CN205426392U (en) | Dot matrix pressure detecting system based on flexible pressure drag material | |
| CN107784891B (en) | Steering feel simulation and rotation angle measurement device for simulation driving system | |
| CN107591053A (en) | A kind of steering feel simulation and climb displacement device applied to driving simulator | |
| CN113562066B (en) | Wire-controlled steering system and fault diagnosis method | |
| CN105005303A (en) | Vertical and balanced robot | |
| CN109910061B (en) | Separated magnetic double encoder | |
| CN206593587U (en) | A kind of pedal travel measurement apparatus for driving data acquisition system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171027 Termination date: 20200223 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |