CN201184844Y - Portable braking property tester - Google Patents
Portable braking property tester Download PDFInfo
- Publication number
- CN201184844Y CN201184844Y CNU200720199070XU CN200720199070U CN201184844Y CN 201184844 Y CN201184844 Y CN 201184844Y CN U200720199070X U CNU200720199070X U CN U200720199070XU CN 200720199070 U CN200720199070 U CN 200720199070U CN 201184844 Y CN201184844 Y CN 201184844Y
- Authority
- CN
- China
- Prior art keywords
- pedal force
- force sensor
- performance tester
- pedal
- brake performance
- 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 - Lifetime
Links
Images
Landscapes
- Braking Elements And Transmission Devices (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model discloses a portable braking performance tester having pedal force test function, which comprises an acceleration sensor, an A/D converter, a microprocessor, keys, a lattice liquid crystal display, a brake pedal tip switch, a USB interface and an RS232 serial output interface. The portable braking performance tester is characterized in that a pedal force sensor is arranged under a vehicle brake pedal; the pedal force sensor and the acceleration sensor are connected with the microprocessor through the A/D sensor. The portable braking performance tester has the advantages that the pedal force sensor is added to the portable braking performance tester so that the tester has the additional function of testing the pedal force, thus overwhelming the defect that a user generally needs an additional pedal force tester for testing the pedal force, reducing the cost and meeting the requirements of the user.
Description
Technical field
The utility model relates to a kind of traffic hazard and reconnoitres the instrument of testing with vehicle braking performances, is to be the improvement of ZL200310108237.3 portable brake performance tester performance to the patent No..
Background technology
The development of national economy be unable to do without transport by road, and transport by road must can guarantee safe driving.The quality of vehicle braking performances is one of key factor that influences safe driving.The patent No. is the requirement that the ZL200310108237.3 portable brake performance tester has satisfied the road examination basically, and there is Chinese character to show, functions such as wireless communication interface, but requirement according to GB GB7258-2004 " motor vehicle security of operation technical conditions ", in test braking ability parameter, the retarded velocity of fully sending (MFDD), the brake coordination time, initial speed of braking, in the time of braking distance etc., also have difference restriction to pedal force according to different automobile types, instrument does not have this function at present, still needing is equipped with a cover Brake Pedal Force Tester in addition, brings the increase of cost and the inconvenience of use to the user.
Summary of the invention
The purpose of this utility model is that to overcome the existing patent No. be the deficiency of ZL200310108237.3 portable brake performance tester, and a kind of portable brake performance tester that contains the pedal force measurement function is provided.
Technical scheme of the present utility model is: a kind of portable brake performance tester, it comprises acceleration transducer, A/D converter, microprocessor, button, lattice lcd, brake pedal contact switch, USB interface, RS232 serial output interface, be characterized in, be equipped with the pedal force sensor under the vehicle braked pedal, described pedal force sensor is connected with microprocessor by A/D converter with acceleration transducer.
Described pedal force sensor comprises elastic body, strain ga(u)ge, thermoset resin cementing agent and temperature, sensitivity, zero compensation element, strain ga(u)ge sticks on elastic body strain regions surface with the thermoset resin cementing agent, and four sheet resistance strainometers connect into the Wheatstone bridge circuit.
Described elastic body is to be formed by block of metal materials processing, and the centre is the rood beam structure, and there is the supporting of spoke-like on both sides.
Described pedal force sensor is equipped with the stainless steel diaphragm that is used for protection against the tide in that all envelope is full with fluid sealant through zero crossing, temperature zero point, sensitivity and temperature control compensation back on fluid sealant.
The pedal force sensor elastomer is the same with other resistance-strain type elastic body, its principle of work is based on the strain principle of metallic elastic body deformability principle and strain ga(u)ge, under external force promptly, strain ga(u)ge is out of shape together with elastic body and changes the physical phenomenon of resistance value.Strain ga(u)ge sticks on pedal force elastic body strain regions surface securely with the thermoset resin cementing agent, four sheet resistance strainometers connect into the Wheatstone bridge circuit, under external force, strain ga(u)ge changes resistance value with the distortion of pedal force sensor elastomer, thereby makes strain bridge produce a voltage output signal that is directly proportional with external force.
The beneficial effects of the utility model are, portable brake performance tester set up the pedal force sensor, makes instrument increase the function of pedal force test, overcome the user and still needed when the test pedal force and be equipped with the shortcoming of Brake Pedal Force Tester in addition, reduce cost, satisfied user's requirement.
Description of drawings
Fig. 1 is the signal processing unit theory diagram of portable brake performance tester;
Fig. 2 is the front view that comprises the pedal force sensor construction of brake pedal;
Fig. 3 is the vertical view of the pedal force sensor construction of brakeless pedal;
Embodiment
By shown in Figure 1, a kind of portable brake performance tester, it comprises acceleration transducer, A/D converter, microprocessor, button, lattice lcd, brake pedal contact switch, USB interface, RS232 serial output interface, be characterized in, be equipped with the pedal force sensor on the vehicle braked pedal, described pedal force sensor is connected with microprocessor by A/D converter with acceleration transducer.
By Fig. 2, shown in Figure 3, the pedal force sensor comprises pedal 1, elastic body 3, strain ga(u)ge 2, thermoset resin cementing agent 4 and temperature, sensitivity, zero compensation element, sticking 4 (the using the H-610 cementing agent) of strain ga(u)ge 2 usefulness thermoset resin cementing agents are attached to the strain regions surface of elastic body 3, and four sheet resistance strainometers connect into the Wheatstone bridge circuit.Elastic body 3 is to be formed by block of metal materials processing, and the utility model adopts superior alloy steel 40GrNiMoA, is the rood beam structure in the middle of the elastic body 3, and there is the supporting of spoke-like on both sides.
The cable exit of described pedal force sensor adopts rubber ring to be connected with seal socket, between web member and the cable, seal with heat-shrinkable T bush, anti-sealing and moisture enter elastic body from cable one end, sensor with compensating element, after zero crossing, temperature zero point, sensitivity and temperature control compensation, all envelope is full with fluid sealant 6 (the fluid sealant model is 703) in the upper and lower groove of elastic body, pasting thickness in the elastic body top and bottom with the high-performance adhesive glue then is the stainless steel diaphragm 5 of 0.12mm, has improved the moistureproof ability of pedal force sensor.
This pedal force sensor bulk is little, in light weight, high duty alloy steel, all-sealed structure, because no movable web member, and be subjected to force direction that bigger selectivity is arranged, vast market prospect will be arranged.
The range ability of pedal force sensor is selected:
According to the requirement of GB7258-2004, in braking performance test, remove and to test MFDD, t
Association, outside the parameter such as braking distance, also to detect pedal force, the brake pedal force when carrying out the braking ability check by the requirement of 7.13.1.3 bar should meet following requirement:
When a) being fully loaded with check
Hydraulic braking system: pedal force, passenger car≤500N
Other motor vehicle≤700N
When b) zero load is checked
Hydraulic braking system: pedal force, passenger car≤400N
Other motor vehicle≤450N
When two-wheeled, motor cycle combination and trail bike were checked, pedal force should be greater than 400N.When tricar, motor tricycle and tractor transportation unit were checked, pedal force should be greater than 600N.
Analysis-by-synthesis the requirement of GB to the pedal force sensor, in conjunction with some companion module requirements of this instrument, the range of pedal force sensor is 0～1000N, synthesis precision is ± 2%, power supply is 3V.DC.Through lab investigation and on-the-spot practical probation, the technical indicator of pedal force sensor is:
1. range; 0～1000N;
2. synthesis precision≤± 2%
3. sensitivity: 1mv/v
4. output, input impedance: 〉=350 Ω;
5. temperature range :-10～+ 55 ℃
Signal processing unit is the core ingredient of portable vehicle brake performance tester.Acceleration transducer and pedal force sensor two paths of signals are behind A/D converter, enter microprocessor and carry out data processing, data after microprocessor will be handled are delivered to lattice lcd and are shown measurement result, test curve, directly store data, and can select as required data are delivered to computing machine and printer by the RS232 serial communication, or deliver to computing machine by USB interface, can also data be delivered to the computing machine of master control room by wireless communication module on the spot.
Brake performance tester in use, be to vehicle kinetic measurement in the process of moving, the whole measuring process time is shorter, if want true reflected measurement process, this just needs the response time of instrument enough fast, and bigger memory data output will be arranged, also to sample simultaneously in addition to acceleration transducer and pedal force sensor.Therefore, the embedded microprocessor of FLASH type that here we adopted carries two-way and has the AD converter that 16 bit resolutions, programmable transition speed maximum can reach 1Msps; The memory space of its flash memory is up to 64K.
Under the braking test pattern, microprocessor is after receiving the brake pedal signal, at once begin to deposit the retarded velocity and the pedal force of AD converter sampling in the gauge internal storer, then, calculate brake coordination time, initial speed of braking, the average retardation rate that fully sends, braking distance, average pedal force according to the built-in computing formula of microprocessor.
Claims (5)
1. portable brake performance tester, it comprises acceleration transducer, A/D converter, microprocessor, button, lattice lcd, brake pedal contact switch, USB interface, RS232 serial output interface, it is characterized in that, be equipped with the pedal force sensor on the vehicle braked pedal, described pedal force sensor is connected with microprocessor by A/D converter with acceleration transducer.
2. portable brake performance tester according to claim 1, it is characterized in that, described pedal force sensor comprises pedal (1), elastic body (3), strain ga(u)ge (2), thermoset resin cementing agent and temperature, sensitivity, zero compensation element, described strain ga(u)ge (3) sticks on the strain regions surface of elastic body (3) with thermoset resin cementing agent (4), and four sheet resistance strainometers connect into the Wheatstone bridge circuit.
3. portable brake performance tester according to claim 2 is characterized in that, described elastic body is to be formed by block of metal materials processing, and the centre is the rood beam structure, and there is the supporting of spoke-like on both sides.
4. portable brake performance tester according to claim 1, it is characterized in that, described pedal force sensor is equipped with the stainless steel diaphragm (5) that is used for protection against the tide in that all envelope is full with fluid sealant (6) through zero crossing, temperature zero point, sensitivity and temperature control compensation back on fluid sealant.
5. portable brake performance tester according to claim 1 is characterized in that, the range of described pedal force sensor is 0～1000N.
Portable brake performance tester according to claim 1 is characterized in that, the cable exit of described pedal force sensor adopts rubber ring to be connected with seal socket, between web member and the cable, seals with heat-shrinkable T bush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720199070XU CN201184844Y (en) | 2007-12-11 | 2007-12-11 | Portable braking property tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720199070XU CN201184844Y (en) | 2007-12-11 | 2007-12-11 | Portable braking property tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201184844Y true CN201184844Y (en) | 2009-01-21 |
Family
ID=40272584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720199070XU Expired - Lifetime CN201184844Y (en) | 2007-12-11 | 2007-12-11 | Portable braking property tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201184844Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852665A (en) * | 2010-06-13 | 2010-10-06 | 重庆大学 | Method and system for testing brake pressure without dismantling rail transit brake system |
| CN103792096A (en) * | 2014-02-27 | 2014-05-14 | 上海西派埃自动化仪表工程有限责任公司 | Portable brake performance tester with embedded electronic gyroscope and test method |
| CN104280159A (en) * | 2014-10-17 | 2015-01-14 | 中国铁道科学研究院铁道建筑研究所 | Resilient base plate sensor |
| CN104833518A (en) * | 2014-12-19 | 2015-08-12 | 北汽福田汽车股份有限公司 | Vehicle brake test device and method |
| CN104990652A (en) * | 2015-05-22 | 2015-10-21 | 杨文俊 | Device of automobile brake pedal force meter and hand brake control force meter |
| CN107727415A (en) * | 2017-12-04 | 2018-02-23 | 广东泓胜科技股份有限公司 | A kind of portable automobile wheel braking ability dynamic testing method and system |
| CN111537237A (en) * | 2020-04-29 | 2020-08-14 | 江西江铃集团新能源汽车有限公司 | Equipment fixing device and braking performance testing system |
-
2007
- 2007-12-11 CN CNU200720199070XU patent/CN201184844Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852665A (en) * | 2010-06-13 | 2010-10-06 | 重庆大学 | Method and system for testing brake pressure without dismantling rail transit brake system |
| CN101852665B (en) * | 2010-06-13 | 2011-10-05 | 重庆大学 | Method and system for testing brake pressure without dismantling rail transit brake system |
| CN103792096A (en) * | 2014-02-27 | 2014-05-14 | 上海西派埃自动化仪表工程有限责任公司 | Portable brake performance tester with embedded electronic gyroscope and test method |
| CN104280159A (en) * | 2014-10-17 | 2015-01-14 | 中国铁道科学研究院铁道建筑研究所 | Resilient base plate sensor |
| CN104833518A (en) * | 2014-12-19 | 2015-08-12 | 北汽福田汽车股份有限公司 | Vehicle brake test device and method |
| CN104990652A (en) * | 2015-05-22 | 2015-10-21 | 杨文俊 | Device of automobile brake pedal force meter and hand brake control force meter |
| CN107727415A (en) * | 2017-12-04 | 2018-02-23 | 广东泓胜科技股份有限公司 | A kind of portable automobile wheel braking ability dynamic testing method and system |
| CN111537237A (en) * | 2020-04-29 | 2020-08-14 | 江西江铃集团新能源汽车有限公司 | Equipment fixing device and braking performance testing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201184844Y (en) | Portable braking property tester | |
| CN201107258Y (en) | Continuous road surface friction coefficient test device | |
| CN101893472B (en) | Method and device for measuring tonnage of automobile | |
| CN201974224U (en) | Vehicle high-speed dynamic weighing system | |
| CN203337111U (en) | Hoop type optical fiber grating reinforcement meter | |
| CN102072791B (en) | Dynamic-static four-in-one rail pad sensor | |
| CN201177565Y (en) | Double counterweight loading type automobile electric power-assisted steering system checking platform | |
| CN202903128U (en) | Strain measuring device for concrete structural body | |
| CN103551921B (en) | Piezoresistive integrated three-dimensional turning force sensor | |
| CN103017967B (en) | Underwater spoke type force sensor | |
| CN201459598U (en) | Bridge basin-shaped rubber support seat with monitoring configuration | |
| CN201440092U (en) | Piezoelectric type dynamic bar-shaped weighing plate | |
| CN202994144U (en) | Digital inclinator based on accelerometer | |
| CN109141933A (en) | A kind of hub-type sensor dynamometric system | |
| CN213068495U (en) | Highway road surface compressive capacity detection device | |
| CN206038328U (en) | Dull and stereotyped brake test bench | |
| CN207850503U (en) | A kind of driving weight intelligent monitor system | |
| CN201297956Y (en) | A bridge automobile dynamic weighting plate | |
| CN202869443U (en) | Integrated displacement and rotation angle sensor with fiber Bragg gratings | |
| CN208520454U (en) | Bar shaped stress-type dynamic vehicle weighing device | |
| CN202547757U (en) | Single-point small-range solder sealing sensor | |
| CN1952626A (en) | Vehicular weighing digital measurer | |
| CN203116829U (en) | Dynamic vehicle weighing device | |
| CN208424122U (en) | Hub motor of electric bicycle with built-in power-assisted sensor | |
| CN203572563U (en) | Dynamic vehicle weighing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090121 |