CN205403922U - Overload detection system of vehicle - Google Patents
Overload detection system of vehicle Download PDFInfo
- Publication number
- CN205403922U CN205403922U CN201620176546.7U CN201620176546U CN205403922U CN 205403922 U CN205403922 U CN 205403922U CN 201620176546 U CN201620176546 U CN 201620176546U CN 205403922 U CN205403922 U CN 205403922U
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- circuit
- vehicle
- weighing sensor
- bridge type
- amplifier
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Abstract
The utility model discloses an overload detection system of vehicle, its characterized in that: include singlechip and RS485 interface circuit, key entry circuit, AD converting circuit, power, buzzer and the LED display circuit be connected with monolithic electromechanics, RS485 interface circuit is connected with the RS485RS232 converter, RS485RS232 converter and upper computer connection, and AD converting circuit is connected with the amplifier, and the amplifier is connected with bridge type weighing sensor. The utility model discloses be equipped with the fixed bridge type weighing sensor's that ins succession steel sheet on the road surface of highway charge mouth, when the automobile process, the weight of vehicle will be come out by the weighing sensor measurement, sends the changer to and handles the back, conveys the computer again, and process analytical judgement will send out police dispatch to overloaded vehicle and report. Its simple structure, to detect precision height, good reliability, convenient operation, monitoring effect good.
Description
Technical field
This utility model relates to technical field of vehicle detection, particularly relates to a kind of vehicle overload detecting system.
Background technology
The facilitation of national economy is proved by the fast development of highway by the economic of sustainable development for many years.But in Automobile Transportation, due to the driving by economic interests, cargo vehicle overloading ubiquity.Overload traveling causes highway badly damaged, causes many pernicious vehicle accidents.
For solving overload of vehicle problem, at present, at the vehicle dynamic weighing system that China widely uses, the scale body of dynamic weigher remains employing scale body platform and bridges on a sensor, the bridge architecture of the simple-beam type that the weight of thing of making to weigh is delivered on sensor through scale structure again, it has the features such as price advantage is big, assembles flexibly and is easily maintained.And, the vehicle dynamic weighing display controller instrument that the domestic precision supporting with it is higher, during at the uniform velocity being weighed within 16km/h is tested, the mean error that single shaft load-carrying is measured is from ± 2%-± 6% not etc., but under more than 16km/h faster speed, fict car weight value can be produced and even can cause that the situation losing axle weight occurs not soon due to detection speed.So, in Dynamic Weighing Technology research in the past few decades, how to keep the stability of accuracy of detection and reducing the impact on detection of the vehicle Negotiation speed, the problem being always up endeavouring to solve.
Utility model content
Because the drawbacks described above of prior art, technical problem to be solved in the utility model is to provide a kind of vehicle overload detecting system, equipped with the steel plate of fixing bridge type weighing sensor of ining succession on the road surface of expressway tol lcollection mouth, when automobile is through out-of-date, the weight of vehicle will be weighed sensor measurement out, after delivering to transmitter process, then is sent to computer, judge by analysis, overloaded vehicle will be sent alarm.Its simple in construction, accuracy of detection height, good reliability, easy to operate, monitoring effect good.
For achieving the above object, this utility model provides a kind of vehicle overload detecting system, it is characterized in that: include single-chip microcomputer and the RS485 interface circuit electrically connected with single-chip microcomputer, input through keyboard circuit, A/D change-over circuit, power supply, buzzer and LED display circuit, described RS485 interface circuit is connected with RS485/RS232 transducer, described RS485/RS232 transducer is connected with host computer, described A/D change-over circuit is connected with amplifier, and described amplifier is connected with bridge type weighing sensor.
Above-mentioned a kind of vehicle overload detecting system, it is characterised in that: described single-chip microcomputer is AT89C51 single-chip microcomputer.
Above-mentioned a kind of vehicle overload detecting system, it is characterised in that: described bridge type weighing sensor adopts bridge type weighing sensor WPL110.
Above-mentioned a kind of vehicle overload detecting system, it is characterised in that: described amplifier adopts OP07 chip.
Above-mentioned a kind of vehicle overload detecting system, it is characterised in that: described A/D change-over circuit adopts the circuit based on A/D conversion chip TLC0838.
Above-mentioned a kind of vehicle overload detecting system, it is characterised in that: described input through keyboard circuit and LED display circuit are connected with single-chip microcomputer by expansion interface chip 8255.
The beneficial effects of the utility model are:
This utility model on the road surface of expressway tol lcollection mouth equipped with the steel plate of fixing bridge type weighing sensor of ining succession, when automobile is through out-of-date, the weight of vehicle will be weighed sensor measurement out, after delivering to transmitter process, it is sent to computer again, judge by analysis, overloaded vehicle will be sent alarm.Its simple in construction, accuracy of detection height, good reliability, easy to operate, monitoring effect good.
Below with reference to accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is described further, to be fully understood from the purpose of this utility model, feature and effect.
Accompanying drawing explanation
Fig. 1 is overall structure block diagram of the present utility model.
Fig. 2 is the detection cell circuit schematic diagram of A/D change-over circuit of the present utility model, amplifier and bridge type weighing sensor composition.
Fig. 3 is input through keyboard circuit schematic diagram of the present utility model.
Fig. 4 is LED display circuit circuit theory diagrams of the present utility model.
Fig. 5 is buzzer circuit circuit theory diagrams of the present utility model.
Detailed description of the invention
As shown in Figure 1, a kind of vehicle overload detecting system, it is characterized in that: include single-chip microcomputer 1 and the RS485 interface circuit 4, input through keyboard circuit 5, A/D change-over circuit 6, power supply 9, buzzer 10 and the LED display circuit 11 that electrically connect with single-chip microcomputer 1, described RS485 interface circuit 4 is connected with RS485/RS232 transducer 3, described RS485/RS232 transducer 3 is connected with host computer 2, described A/D change-over circuit 6 is connected with amplifier 7, and described amplifier 7 is connected with bridge type weighing sensor 8.
In the present embodiment, described single-chip microcomputer 1 is AT89C51 single-chip microcomputer.
In the present embodiment, described bridge type weighing sensor 8 adopts bridge type weighing sensor WPL110.
In the present embodiment, described amplifier 7 adopts OP07 chip.
In the present embodiment, described A/D change-over circuit 6 adopts the circuit based on A/D conversion chip TLC0838.
In the present embodiment, described input through keyboard circuit 5 and LED display circuit 11 are connected with single-chip microcomputer 1 by expansion interface chip 8255.
Wheatstone bridge, amplifier, TLC0838 and single-chip microcomputer are coupled together, just constitutes the acquisition module of native system.Four measured signals are connected into the full-bridge working forms of two differential symmetries, and it is 0-1V that the signal recorded is computed output area, and the input voltage range of TLC0838 is 0-5V, therefore signal need to amplify 5 times.Overall interface circuit is as shown in Figure 2.Wherein, WPL111 bridge type weighing sensor is rational in infrastructure, use simple, convenient installation.Wheatstone bridge has lot of advantages, as suppressed the impact of variations in temperature, it is possible to suppress side force interference, it is possible to solve the compensation problem etc. of LOAD CELLS eaily.Because the sensitivity of full-bridge type equal arm bridge is the highest, each arm parameter is consistent, and the impact of various interference is easily repealed by implication, so LOAD CELLS all adopts full-bridge type equal arm bridge.
To sum up, this utility model adopts AT89C51 single-chip microcomputer as core processor, utilizes bridge type weighing sensor WPL110 to convert automobile-carried weight to voltage signal；Then pass through amplifying circuit convert digital signal to by delivering to A/D conversion chip TLC0838 after voltage signal amplification and calculate loading capacity；The loading capacity of gained will deliver to host computer by RS485 interface circuit, and host computer is made comparisons with the loading capacity of setting and judges whether overload, if overload shows the weight of overload and reports to the police；Parameter can pass through keyboard to set up, and keyboard also can release warning.
Preferred embodiment of the present utility model described in detail above.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all technical staff in the art pass through the available technical scheme of logical analysis, reasoning, or a limited experiment on the basis of existing technology according to design of the present utility model, all should in the protection domain being defined in the patent claims.
Claims (6)
1. a vehicle overload detecting system, it is characterized in that: include single-chip microcomputer (1) and the RS485 interface circuit (4) electrically connected with single-chip microcomputer (1), input through keyboard circuit (5), A/D change-over circuit (6), power supply (9), buzzer (10) and LED display circuit (11), described RS485 interface circuit (4) is connected with RS485/RS232 transducer (3), described RS485/RS232 transducer (3) is connected with host computer (2), described A/D change-over circuit (6) is connected with amplifier (7), described amplifier (7) is connected with bridge type weighing sensor (8).
2. a kind of vehicle overload detecting system as claimed in claim 1, it is characterised in that: described single-chip microcomputer (1) is AT89C51 single-chip microcomputer.
3. a kind of vehicle overload detecting system as claimed in claim 1, it is characterised in that: described bridge type weighing sensor (8) adopts bridge type weighing sensor WPL110.
4. a kind of vehicle overload detecting system as claimed in claim 1, it is characterised in that: described amplifier (7) adopts OP07 chip.
5. a kind of vehicle overload detecting system as claimed in claim 1, it is characterised in that: described A/D change-over circuit (6) adopts the circuit based on A/D conversion chip TLC0838.
6. a kind of vehicle overload detecting system as claimed in claim 1, it is characterised in that: described input through keyboard circuit (5) and LED display circuit (11) are connected with single-chip microcomputer (1) by expansion interface chip 8255.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620176546.7U CN205403922U (en) | 2016-03-09 | 2016-03-09 | Overload detection system of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620176546.7U CN205403922U (en) | 2016-03-09 | 2016-03-09 | Overload detection system of vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205403922U true CN205403922U (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620176546.7U Expired - Fee Related CN205403922U (en) | 2016-03-09 | 2016-03-09 | Overload detection system of vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205403922U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106627138A (en) * | 2016-11-29 | 2017-05-10 | 翁选龙 | Truck overload limiting system |
-
2016
- 2016-03-09 CN CN201620176546.7U patent/CN205403922U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106627138A (en) * | 2016-11-29 | 2017-05-10 | 翁选龙 | Truck overload limiting system |
| CN106627138B (en) * | 2016-11-29 | 2019-03-01 | 翁选龙 | A kind of bogie overload limitation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160727 Termination date: 20170309 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |