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System and method for detecting absolute position of rail heavy equipment

A technology of absolute position and detection system, applied in measurement devices, conversion sensor output, instruments, etc., can solve the problems of insufficiency of laser ranging, easy to be interfered by external electromagnetic waves, and high cost of coding cables, and achieve the effect of expanding the measurement range.

Pending Publication Date: 2020-11-10
DALIAN HUARUI HEAVY IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned detection products have certain defects, for example: the encoder needs to be compensated and calibrated for wheel-rail slippage; the encoding cable is expensive and susceptible to external electromagnetic wave interference; laser ranging cannot meet the harsh environment such as on-site dust and smoke

Method used

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  • System and method for detecting absolute position of rail heavy equipment
  • System and method for detecting absolute position of rail heavy equipment
  • System and method for detecting absolute position of rail heavy equipment

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0043]In order to apply to the positioning detection of wheel-rail running equipment in various harsh working conditions, the present invention provides an absolute position detection system for rail heavy machinery equipment, such as figure 1 As shown, it includes: a code tape 1, a reading head 2, and a decoder 3; the code tape 1 is fixedly installed above the track and parallel to the track; the reading head 2 is fixedly connected to the rail heavy machinery equipment 4 through a bracket 5 , and rides on the code tape 1, and walks on the code tape 1 with the track crane equipment 4; the decoder 3 is connected to the reading head 2 through an optical fiber.

[0044] During specific implementation, preferably, the code strip 1 is a steel strip, such as figure 2 As shown, it is a schematic diagram of code tape 1 of 9-bit serial cyclic coding, and 0 or 1 is engraved on the steel tape according to a series of binary code sequences, and the holes in it represent 0. According to ...

Embodiment 2

[0062] Such as Figure 5 As shown, (on the basis of Embodiment 1), the present invention also provides a method for detecting the absolute position of rail heavy machinery equipment, comprising the steps of:

[0063] S1. The reading head 2 is fixedly connected to the track heavy machine equipment 4 through the bracket 5, and rides on the code belt 1 and walks on the code belt 1 with the track heavy machine equipment 4;

[0064] S2, the decoder 3 transmits the transmission signal to the reading head 2 through an optical fiber;

[0065] S3. The reading head 2 collects the physical code of the current position on the code strip 1, and sends the collected physical code back to the decoder 3 through an optical fiber;

[0066] The physical encoding of the current position on the code tape 1 collected by the reading head 2 includes: the optical fiber transmitting device 6 emits visible red light through the code tape 1 to the optical fiber receiving device 7; the optical information...

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Abstract

The invention provides a system and a method for detecting the absolute position of rail heavy machine equipment. The system comprises a code band, a reading head and a decoder, the code belt is fixedly arranged above the rail and is parallel to the rail; the reading head is fixedly connected with the track heavy machine equipment through a bracket, is straddled on the code belt and runs on the code belt along with the rail heavy machine equipment; and the decoder is connected with the reading head through an optical fiber. A code belt manufactured based on a serial cyclic coding rule is mainly utilized, a reading head runs on the code belt installed parallel to a rail in a straddling mode along with heavy machine equipment, codes of the current position on the code belt are read through an optical fiber transmitting and receiving sensor, and then code belt physical codes of the current position are converted into continuous absolute position values through a decoder. The continuous absolute position values are output to a PLC upper computer. Position information read by the detection system is not affected by wheel rail slipping, smoke dust, electromagnetic interference and the like.

Description

technical field [0001] The present invention relates to the technical field of automation control, in particular, to a system and method for detecting the absolute position of rail heavy machinery equipment. Background technique [0002] In the domestic and foreign markets, the mobile position detection of heavy machinery wheel-rail equipment mainly adopts the following types: rotary encoders, encoding cables, laser ranging and other products. However, the above-mentioned detection products have certain defects. For example, the encoder needs compensation and calibration for wheel-rail slippage; the encoding cable is expensive and susceptible to external electromagnetic interference; laser ranging cannot meet the harsh environment such as on-site dust and smoke. Contents of the invention [0003] According to the technical problems raised above, a system and method for detecting the absolute position of rail heavy machinery equipment are provided. The present invention ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/347B66C13/16
CPCG01D5/34707G01D5/34792B66C13/16
Inventor 向召洋李昕闫成彦吴阳闻宇王静于兴高
Owner DALIAN HUARUI HEAVY IND GRP CO LTD