CN100367005C - Detecting method for vehicle tire and detecting sensor - Google Patents
Detecting method for vehicle tire and detecting sensor Download PDFInfo
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- CN100367005C CN100367005C CNB2005100942259A CN200510094225A CN100367005C CN 100367005 C CN100367005 C CN 100367005C CN B2005100942259 A CNB2005100942259 A CN B2005100942259A CN 200510094225 A CN200510094225 A CN 200510094225A CN 100367005 C CN100367005 C CN 100367005C
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Abstract
The present invention discloses a method and a sensor for detecting vehicle tyres. The present invention is characterized in that the sensor comprises a lining core provided with a detecting circuit board provided with an electrode, wherein an electric isolation layer is placed on the circuit board and has an opening hole in a position corresponding to the electrode on the circuit board; an elastic conductive layer is placed on the electric isolation layer, and an elastic shell body is placed on the elastic conductive layer and is fixedly connected with the lining core. When no vehicles pass, the electrode is in off state; when vehicles pass, the conductive layer is pressed to be attached to the electrode, and the electrode is in an on state to output a signal. The sensor of the present invention is simple in structure, detects the quantity of tyres by on and off states of a plurality of signal circuits, is capable of working in various kinds of severe environment, is basically not disturbed by external environment factors and is high in accuracy rate and durable.
Description
Technical field
The present invention relates to a kind of sensor, specifically is sensor and detection method that a kind of vehicle tyre detects.
Background technology
According to the requirement of mandatory standard GB 1589-2004 " road vehicle contour dimension, axle load and quality limit value ", correctly discern the vehicle tyre number, be very important technology in highway transport vehicle weight metering charging system, the overrun and overload detection system.
Detect the vehicle tyre number, come down to by some, keep at a certain distance away and sensor that vertical direction of traffic distributes, detect the pick-up unit of tyre width.Present widely used detecting sensor has LOAD CELLS, microswitch, optoelectronic switch and Hall switch etc. near switch.Its major defect is promising: 1, detecting sensor is used the pick-up unit of LOAD CELLS, does not have the machinery motion, good seal performance.But because of load-bearing that structure is limit is limited in scope, weak output signals and be subject to disturb, elastic body easily is hit and transships the generation permanent strain.Because of the open-air work temperature difference is big, so the output signal temperature is floated seriously, the post-processed fault rate is high.2, detecting sensor is used the pick-up unit of Switch sensor, and output signal is not subject to by force disturb.But tangible mechanical shift motion is arranged, poor sealing performance, pick-up unit overall failure rate is very high.3, other detecting sensor is as the piezoelectric class.This type of sensor high speed performance is good, but internal resistance is very high, is subject to disturb.Maximum shortcoming is to be difficult for detecting low-speed motion object (is vehicle below 10 kilometers as speed per hour), can not detect static or near stationary object (is vehicle below 5 kilometers as speed per hour).
In sum, since use at present the vehicle tyre testing environment be open-air 24 hours round-the-clock, disturbing effects such as rainwater, ice and snow, sand and dust and sunlight direct projection, make the device of these detecting sensors and installation and measuring sensor occur the major defect that some are difficult to overcome inevitably, cause measuring ability to lose efficacy at last.The result is that the tire discrimination is low, and even can't work.
Summary of the invention
The vehicle tyre detection method and the sensor that the purpose of this invention is to provide a kind of brand new, conducting and disconnection by signal circuit detect tire quantity, it can be worked in the various rugged surroundings, not disturbed by the external environment factor, the accuracy rate height is durable in use.
Technical scheme of the present invention is as follows:
The vehicle tyre detection method is characterized in that setting up a signal output apparatus, and this circuit normality is open circuit, and its open end is a positive and negative electrode, and when vehicle tyre did not pass through, both positive and negative polarity was disconnected, this circuit no signal output; Elastic conducting layer is installed above positive and negative electrode, and when vehicle tyre passed through, tire compressing elastic conducting layer was connected elastic conducting layer and positive and negative electrode, circuit output signal, and then definite tire passes through.
The vehicle tyre detecting sensor, it is characterized in that including the lining core, on the described lining core testing circuit plate is installed, on the testing circuit plate electrode is arranged, be placed with electricity isolated layer on the described circuit board, the electrode corresponding position of electricity isolated layer and circuit board has perforate, and described electricity isolated layer top is placed with elastic conducting layer, be placed with elastic shell on the described elastic conducting layer, elastic shell and the fixed installation of lining core.
Described sensor is characterized in that cavity is arranged at described lining core top, and described circuit board top electrode position is corresponding with cavity, and lining core central authorities are through holes, and the lead of circuit board passes through hole and draws.
Described sensor is characterized in that the described elastic shell back side is a cavity, and described lining core is fixedly mounted in the cavity.
Described sensor is characterized in that described conductive layer is stainless steel substrates, iron plate, conductive rubber slice, and described electricity isolated layer is sheet rubber, plastic sheet or the insulating trip of middle perforate, and described circuit board top electrode is the gate-shaped electrode that is columnar protrusions.
Described sensor is characterized in that described elastic shell is the garden post shapes, and its surface is protruding cambered surface.
The present invention is main material with rubber, flexible housing, conductive layer, separation layer, the circuit board that is printed on two gate-shaped electrodes, lining core and export two core lead lines and form.
The housing upper surface is a protruding cambered surface, and distortion maximum in cambered surface center causes the conductive layer centre during carrying, sees through the separation layer center pit with two gate-shaped electrode short circuits on the circuit board.Be low resistive state between output lead two heart yearns this moment, and it is effective to be output signal.
Advantage of the present invention:
1, do not have the machinery motion, only exist the distortion of rubber and compressibility to change;
2, good seal performance, 120 hours electric properties of water logging and function are unaffected;
3, load-bearing scope is big, 6 kilograms ± 1 kilogram of lower limit, and the upper limit then is the load-bearing upper limit of installation frame;
4, detection speed accommodation from static 0 km/hour to 50 kms/hour;
5, the output signal internal resistance is low, is not more than 4 Ω (containing 10 meters long cable two heart yearn resistance), and antijamming capability is very strong.
6, temperature adaptation scope depends on elastomeric material, and output signal does not exist temperature to float.
Therefore, the invention solves be extensive use of at present LOAD CELLS, microswitch, optoelectronic switch, Hall switch and near switch etc. as the major defect that the tire checking sensor exists, make the highway transport vehicle tire checking accuracy can be up to 100%.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
Embodiment
Referring to accompanying drawing.
A kind of vehicle tyre detecting sensor, include lining core 5, there is through hole 6 in described lining core 5 central authorities, the center of top of lining core 5 has a cavity 7, on the lining core 5 testing circuit plate 4 is installed, two gate-shaped electrodes that are columnar projections are arranged on the testing circuit plate 4, the position of two gate-shaped electrodes is corresponding with cavity 7, the lead of circuit board 4 passes through hole 6 and draws, be placed with the electricity isolated layer 3 that sheet rubber is made on the described circuit board 4, the electrode corresponding position of electricity isolated layer 3 and circuit board 4 has perforate 8, and perforate 8 is positioned at the central authorities of electricity isolated layer 3, also corresponding with the electrode area on the circuit board 4, described electricity isolated layer 3 tops are placed with elastic conducting layer 2, are placed with elastic shell 1 on the described conductive layer 2, and elastic shell 1 is similar to the bottle cap shape, the elastic shell back side is a cavity, and lining core 5 is fixedly mounted in this cavity.Elastic shell 1 is made by rubber, is the garden post shapes, and its upper surface is a cambered surface.
During work, this sensor is installed in the mounting hole on the tire loading plate, elastic shell 1 surface and tire loading plate surface and ground level, when doughnut during not by this sensor, gate-shaped electrode is in off-state, and testing circuit is high resistant output; When doughnut is pushed down elastic shell 1 upper surface, elastic shell 1 surface modification, to lower recess, elastic conducting layer 3 is also thereupon to lower recess, because electricity isolated layer central authorities are through hole, conductive lamination is to gate-shaped electrode, conduction electrode, at this moment testing circuit is low-resistance output, and a plurality of keeping at a certain distance away and sensor that vertical direction of traffic distributes measured tire quantity by detecting tyre width.
Claims (1)
1. the vehicle tyre detection method is characterized in that setting up a signal output apparatus, and this circuit normality is open circuit, and its open end is a positive and negative electrode, when vehicle tyre does not pass through, and not conducting of both positive and negative polarity, this circuit no signal output; Elastic conducting layer is installed above positive and negative electrode, and when vehicle tyre passed through, tire compressing elastic conducting layer was connected elastic conducting layer and positive and negative electrode, circuit output signal, and then definite tire passes through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100942259A CN100367005C (en) | 2005-09-01 | 2005-09-01 | Detecting method for vehicle tire and detecting sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100942259A CN100367005C (en) | 2005-09-01 | 2005-09-01 | Detecting method for vehicle tire and detecting sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1749698A CN1749698A (en) | 2006-03-22 |
| CN100367005C true CN100367005C (en) | 2008-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100942259A Active CN100367005C (en) | 2005-09-01 | 2005-09-01 | Detecting method for vehicle tire and detecting sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN100367005C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2908509B1 (en) * | 2006-11-15 | 2009-02-20 | Michelin Soc Tech | METHOD FOR DATASING AN OUTSTANDING ANGULAR POSITION OF A SENSOR CARRIED BY A TIRE |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5633525A (en) * | 1979-08-28 | 1981-04-04 | Topy Ind Ltd | Inspecting method of shearing strength in automobile wheel |
| CN1046244A (en) * | 1989-04-02 | 1990-10-17 | 周宗扬 | Multifunctional warning device and elastic deformation switch |
| CN2316647Y (en) * | 1997-12-04 | 1999-04-28 | 郭黎明 | Automobile tyre detector |
| GB2395791A (en) * | 2001-09-18 | 2004-06-02 | Charlesworth Frank | Electronic tyre inspection system |
| CN2819350Y (en) * | 2005-09-01 | 2006-09-20 | 合肥市正茂称重系统有限公司 | Tyre inspecting sensor of vehicle |
-
2005
- 2005-09-01 CN CNB2005100942259A patent/CN100367005C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5633525A (en) * | 1979-08-28 | 1981-04-04 | Topy Ind Ltd | Inspecting method of shearing strength in automobile wheel |
| CN1046244A (en) * | 1989-04-02 | 1990-10-17 | 周宗扬 | Multifunctional warning device and elastic deformation switch |
| CN2316647Y (en) * | 1997-12-04 | 1999-04-28 | 郭黎明 | Automobile tyre detector |
| GB2395791A (en) * | 2001-09-18 | 2004-06-02 | Charlesworth Frank | Electronic tyre inspection system |
| CN2819350Y (en) * | 2005-09-01 | 2006-09-20 | 合肥市正茂称重系统有限公司 | Tyre inspecting sensor of vehicle |
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| Publication number | Publication date |
|---|---|
| CN1749698A (en) | 2006-03-22 |
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Owner name: HEFEI CITY ZHENGMAO SCIENCE AND TECHNOLOGY CO.,LT Free format text: FORMER OWNER: ZHENGMAO WEIGHING SYSTEM CO., LTD., HEFEI CITY Effective date: 20080418 |
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Effective date of registration: 20080418 Address after: No. 92, science Avenue, hi tech Development Zone, Anhui, Hefei Patentee after: Hefei Zhengmao Technology Co. Ltd. Address before: No. 92, science Avenue, hi tech Development Zone, Anhui, Hefei Patentee before: Zhengmao Weighing System Co., Ltd., Hefei City |