CN104655244A - Axle measuring type dynamic vehicle weighing system - Google Patents
Axle measuring type dynamic vehicle weighing system Download PDFInfo
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- CN104655244A CN104655244A CN201310594183.XA CN201310594183A CN104655244A CN 104655244 A CN104655244 A CN 104655244A CN 201310594183 A CN201310594183 A CN 201310594183A CN 104655244 A CN104655244 A CN 104655244A
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Abstract
An axle measuring type dynamic vehicle weighing system adopts the structure that a field cabinet is arranged on the ground at the side of a road, an exhaust fan is arranged on the field cabinet, a display is arranged on the field cabinet, a temperature controller, a lightning arrester, a heating plate and an industrial computer are fixedly arranged in the field cabinet, an amplifying signal conditioning board, an AD624 and an DA726 which are electrically connected in sequence are arranged in the industrial computer, one sensor consists of an upper plate, a lower plate, a left side sealing plate, a right side sealing plate and a connection cable, a strain disc is clung to the inner wall of each upper plate, and the sensors are electrically connected with the amplifying signal conditioning board in the industrial computer. The axle measuring type dynamic vehicle weighing system avoids high probability of errors caused by a manual method, reduces the labor intensity and improves the working efficiency.
Description
Technical field
The present invention relates to a kind of weighing system, especially a kind of Axle Measuring formula dynamic vehicle weighing system.
Background technology
Along with the high speed development of Chinese national economy, automobile pollution is increasing, and traffic volume of highway increases rapidly, the overload of vehicle and driving over the speed limit, and can cause highway, bridge is subjected to serious destruction and causes traffic hazard.Dynamic vehicle weighing system may be used for overload of vehicle and the monitoring of driving over the speed limit and management, is the ideal equipment of traffic administration.This system is primarily of the formation such as sensor, weighing instrument.Difference is asked when its major function is used to measure in locality, the tire force of special time driving vehicle, front and back wheel are passed through, the axle calculating vehicle weighs, travel speed, the relevant parameters such as the correct decision number of axle, tire number and vehicle, and process, show, print and store these information, thus realize automatically, not parking meter.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of Axle Measuring formula dynamic vehicle weighing system.
For the technical scheme solving the problems of the technologies described above employing is: Axle Measuring formula dynamic vehicle weighing system, road ground is arranged field cabinet, field arranges exhaust fan cashier's office in a shop, field arranges display cashier's office in a shop, field cabinet internal fixtion is provided with temperature controller, lightning arrester, heating plate, industrial computer, the amplifying signal conditioning plate, AD624 and DA726 that are electrically connected successively is comprised in industrial computer, sensor is made up of upper plate, lower plate, left and right sides shrouding and stube cable, foil gauge is close on upper plate inwall, and sensor is electrically connected with the amplifying signal conditioning plate in industrial computer.
Highway is arranged two sensors, temperature controller adopts thermal resistance type XMT-122 type, lightning arrester TWDB2303 type.
This beneficial effect of the invention is: this weighing system it can be widely used in the occasions such as automatic traffic investigation, Fare Collection System, traffic safety management, carry out real-time vehicle management and perform Transportation Strategies.Overcome the mistakes and omissions that manual method easily occurs, reduce labour intensity, increase work efficiency.
Accompanying drawing explanation
Fig. 1 is weighing system schematic diagram;
Fig. 2 is vehicle weighing system structural representation;
Fig. 3 is amplifying signal conditioning plate circuit diagram.
Embodiment
The principle of system as shown in Figure 1, the pressure transducer be arranged on highway becomes the pressure information that wheel presses through sensor into voltage signal output, again simulation small voltage after filtering, amplify, become digital signal by A/D change-over circuit, CPU process is delivered to as sampled value, calculate the weight pressing through sensor wheel, send display to demonstrate detection data, data are sent in storer simultaneously and save, to further process.The parameter that system will calculate has each wheel wheel load, every root axle axle weight, car weight, the number of axle, wheelbase, vehicle, speed, acceleration etc.
Weighing system as shown in Figure 2, Axle Measuring formula dynamic vehicle weighing system, road ground is arranged field cabinet, field arranges exhaust fan cashier's office in a shop, field arranges display cashier's office in a shop, field cabinet internal fixtion is provided with temperature controller, lightning arrester, heating plate, industrial computer, the amplifying signal conditioning plate, AD624 and DA726 that are electrically connected successively is comprised in industrial computer, sensor is made up of upper plate, lower plate, left and right sides shrouding and stube cable, foil gauge is close on upper plate inwall, and sensor is electrically connected with the amplifying signal conditioning plate in industrial computer.Highway is arranged two sensors, temperature controller adopts thermal resistance type XMT-122 type, lightning arrester TWDB2303 type.Primarily of an industrial computer and several piece sensor composition.Sensor adopts by bended plate type strain transducer.This sensor construction is simple, and lighter in weight, performance is good, and precision is high.One piece of sensor is made up of upper plate, lower plate (base plate), left and right sides shrouding and stube cable, and foil gauge is close on upper plate inwall.Each track is wide 3 meters, with two pieces of sensors, and long 1.5 meters of every block sensor.In cabinet, temperature controller adopts common thermal resistance type XMT-122 type, by its control to well heater and electric fan, ensures that instrument is operated between one 10 DEG C one 25 DEG C.Adopt TWDB2303 type lightning arrester, take shelter from the thunder for single phase poaer supply 220V civil power, its discharge capacity 10KW, operation voltage 620V, response time are less than 50nS.Main frame is the industrial control computer by the design of AT/IST bus standard, and electronic component used all screens by industrial standard.
When vehicle pressure on a sensor time, sensor upper plate is out of shape, and inside sensor, foil gauge resistance value becomes large.Sensor is equivalent to an arm resistance and receives in electric bridge, and according to bridge balance principle, Uo exports a voltage signal be directly proportional to wheel weight.
Signal conditioning circuit as shown in Figure 3.Main Function is that the weak voltage signals that bridge box exports is carried out 10000 times of amplifications.AD624 is high precision low noise operational amplifier, input offset voltage 0.25uV, wide-band amplify in maximum nonlinear distortion 0.001%, 25MHZ; OP 1 is high-precision low-drift operational amplifier, and input offset voltage is 10uV, and offset voltage temperature coefficient is that 0.2uv% is without the need to external compensation and external protection element.In figure, AD624 and combined switch SW forms 1000 times of amplifying circuits, and U2 forms third-order low-pass filter, and U3 is lO times of amplifying circuit.The PCL-1800A/D plate of system, PCL-1800 is that 16 Channel 12-Bit resolution A/D export, and sample frequency is 330KHZ.Because its input channel is many, sample frequency is high, can ensures complete to collect each channel signal, system can be detected multiple track simultaneously.In addition liquid crystal display and facial mask keyboard can be connect with the 16 railway digital signal input and output mouths that A/D plate PCL-1800 provides; The DA plate that system is selected is DAC-726.It is that 12,6 tunnel resolution D/A exports.Each passage can be arranged to following several scope: 0-5V; 0-1OV;-5-+5V;-10-+10V and 4-20MA electric current loop export.
Claims (2)
1. Axle Measuring formula dynamic vehicle weighing system, it is characterized in that: road ground is arranged field cabinet, field arranges exhaust fan cashier's office in a shop, field arranges display cashier's office in a shop, field cabinet internal fixtion is provided with temperature controller, lightning arrester, heating plate, industrial computer, the amplifying signal conditioning plate, AD624 and DA726 that are electrically connected successively is comprised in industrial computer, sensor is made up of upper plate, lower plate, left and right sides shrouding and stube cable, foil gauge is close on upper plate inwall, and sensor is electrically connected with the amplifying signal conditioning plate in industrial computer.
2. Axle Measuring formula dynamic vehicle weighing system according to claim 1, is characterized in that: highway is arranged two sensors, and temperature controller adopts thermal resistance type XMT-122 type, and lightning arrester is TWDB2303 type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310594183.XA CN104655244A (en) | 2013-11-21 | 2013-11-21 | Axle measuring type dynamic vehicle weighing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310594183.XA CN104655244A (en) | 2013-11-21 | 2013-11-21 | Axle measuring type dynamic vehicle weighing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104655244A true CN104655244A (en) | 2015-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310594183.XA Pending CN104655244A (en) | 2013-11-21 | 2013-11-21 | Axle measuring type dynamic vehicle weighing system |
Country Status (1)
| Country | Link |
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| CN (1) | CN104655244A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696232A (en) * | 2017-10-20 | 2019-04-30 | 山东省交通科学研究院 | The automatic calibration method of road axle load spectrum detection system |
-
2013
- 2013-11-21 CN CN201310594183.XA patent/CN104655244A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696232A (en) * | 2017-10-20 | 2019-04-30 | 山东省交通科学研究院 | The automatic calibration method of road axle load spectrum detection system |
| CN109696232B (en) * | 2017-10-20 | 2021-02-19 | 山东省交通科学研究院 | Automatic calibration method of road axle load spectrum detection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150527 |
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| WD01 | Invention patent application deemed withdrawn after publication |