Dynamic-static four-in-one rail pad sensor
A dynamic and static, sensor technology, applied in the direction of instruments, measuring devices, measuring force components, etc., can solve the problems of imperfect sensor functions, inability to measure, and large measurement errors
Active Publication Date: 2012-04-04
HANGZHOU QIANJIANG WEIGHING TECH
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Problems solved by technology
[0009] The present invention aims to solve the problem that the existing rail pad sensor can only measure a vertical force component but not a horizontal force component, resulting in imperfect sensor functions and unscientific and reasonable measurement, or although it can measure vertical force and horizontal force, it cannot measure For the problem of large errors, the dynamic and static four-in-one rail pad sensor of the present invention is provided. The sensor can independently and real-time measure the output signals of different force directions, and can measure both vertical force and horizontal force. And it can eliminate the interference of vertical force on horizontal force signal, and the measurement is accurate
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[0048] The dynamic and static four-in-one rail pad sensor is provided with a plate-shaped elastic body 6 of the pad rail 1, and the front and rear side walls at the left and right ends of the elastic body are respectively symmetrically provided with a blind hole 5, A resistive strain gauge 3 is pasted on the bottom surface of the blind hole, and a wire 10 is connected to the circuit board 14 on the strain gauge. There are also zero point compensation resistors, temperature zero point compensation resistors, and elastic molds that cooperate with the strain gauges to form a circuit in the blind hole. Quantity compensation resistor, sensitivity coefficient compensation resistor and anti-jamming strain gauge, said circuit is vertical output circuit I, vertical output circuit II, horizontal output circuit I and horizontal output circuit II;
[0049] Described vertical output circuit I is made up of strain gauge R13, strain gauge R15, strain gauge R14, strain gauge R16 four strain ga...
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The invention relates to a dynamic-static four-in-one rail pad sensor having the advantages of high detection precision and complete data. In the invention, the front side wall and the rear side wall of two ends of an elastic body are respectively provided with a blind hole (5), and each blind hole is internally provided with a zero compensation resistor, a temperature zero compensation resistor,an elastic modulus compensation resistor, a sensitivity coefficient compensation resistor and an anti-interference strain gage which are matched with stain gages to form circuits; the circuits comprise a vertical output circuit I, a vertical output circuit II, a horizontal output circuit I and a horizontal output circuit II; the positive ends of arch bridges of two stain gages of adjacent bridge arms of the vertical output circuit I and the vertical output circuit II are respectively connected in series with a zero compensation resistor and a temperature zero compensation resistor; the positive ends of arch bridges of two stain gages of adjacent bridge arms of the horizontal output circuit I and the horizontal output circuit II are respectively connected in series with a zero compensationresistor and a temperature zero compensation resistor; output positive ends of two stain gages used as adjacent bridge arms are respectively connected in series with an anti-interference strain gage;and output negative ends of two stain gages used as adjacent bridge arms are respectively connected in series with an anti-interference strain gage. The invention is suitable for being used as a railpad sensor.
Description
technical field [0001] The invention relates to a device for measuring force or stress by using the characteristic that the resistance varies with the magnitude of the applied force. Background technique [0002] A load cell measures force by its response to a load force. The resistance strain type load cell is a change in resistance caused by the deformation of the strain device in the sensor detection circuit system due to the change of the load force. Different resistances output different electrical signal parameters, thereby detecting the magnitude of the load force. Rail pad sensors usually measure the loading weight of vehicles and trains by measuring the pressure of the wheels on the rails. They have been used in various light rails, heavy rails and crane rails without foundation pits and continuous rail weighing occasions. [0003] In rail transportation, truck loading safety is always an important issue in transportation production safety. It is not uncommon for ...
Claims
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IPC IPC(8): G01L5/16G01L1/22
Inventor 顾增华卢颖卓凌行峰
Owner HANGZHOU QIANJIANG WEIGHING TECH