Multipoint location system for rail vehicle go and back running

Abstract

The invention discloses a multi-point positioning system for rail cars traveling back and forth, which comprises a rail car, a CPU processor (10), a rail car sensor device (11), a frequency conversion governor (12) and a rail car traction motor (13) Composition, wherein, rail car sensing device (11) is provided with signal output line and is connected with CPU processor (10), and the output terminal of CPU processor (10) is connected with described frequency conversion governor (12), and described frequency conversion governor The output end of the speed switch (12) is connected to the traction motor (13) of the rail car, and it is characterized in that: the CPU processor (10) reads the signal sent by the sensor device (11) of the rail car to identify the current position of the rail car and running direction, and output different speed control signals to the frequency conversion speed regulator (12), so as to realize the speed control of the rail car. The invention has strong anti-interference ability, can reflect the accurate position of the rail car in time, controls the running speed of the rail car, can increase or decrease the number of stations arbitrarily, has simple structure, is convenient to use, and has high detection and positioning accuracy.

Description

technical field [0001] The invention belongs to the technical field of rail cars, and in particular relates to a multi-point positioning system for rail cars traveling back and forth. Background technique [0002] Rail vehicles in the transportation field include railways, light rails, subways, etc.; rail vehicles in the industrial field include rail vehicles for various material handling, such as driving, rail cranes, hoisting winches, etc., and various working vehicles that run on the track, such as Coke pushing trucks, coke blocking trucks, coke quenching trucks and coal loading trucks in the coking industry. [0003] In the existing rail car positioning technology, most operators rely on vision and experience to determine whether the rail car is in place and whether it is aligned, often lagging behind or specifying a parking space ahead of time, resulting in frequent manipulation of the controller and reducer. Frequent start and stop, Frequent opening of the hydraulic b...

AI Technical Summary

Problems solved by technology

[0013] 1. The fixed scales are powered in series. Every 30 fixed scales need to be equipped with a power box. The power supply method is complicated and unreliable.

[0014] 2. There is an independent single-chip microcomputer system in each fixed scale, and many interfaces and solder joints in series will greatly reduce the reliability of the system

[0015] 3. The initialization of the infrared coding position detection method is very complicated, and it is necessary to use an intensity detector to detect the intensity of each infrared diode of each fixed scale; use a coding detector to encode the fixed scale; use a position detector to calibrate the movable scale ,Install

[0016] 4. The single-chip microcomputer system and power supply system in the fixed scale are susceptible to electromagnetic interference, such as high-frequency pulses of frequency converters, motor magnetic fields, three-phase AC power supply brush ignition, etc.

[0017] 5. It is required to clean the infrared emission window with a fixed scale every half a month to a month, and the workload is huge

[0018] 6. There are installation errors in fixed scales and fixed standard light-emitting diodes, especially the angle error of diode installation has a great influence and scattering error; infrared coded position detection technology uses infrared light to transmit coded information, which is easily interfered by ambient infrared light

Therefore, the accuracy of infrared code position detection is difficult to reach 10mm, and the control accuracy is even lower

[0019] 7. Since the infrared coding position detection method can only detect position information but not speed information, it cannot achieve better speed control, so its performance is not satisfactory when used for automatic centering

[0025] 1. The displacement or offset of the transmitting device or the receiving device due to mechanical vibration and other reasons causes the receiving device to not receive the photoelectric signal reliably, and cannot generate electrical signals or generate erroneous signals

[0026] 2. Since the photoelectric device is installed on the production site, the photoelectric detection device cannot work reliably due to the influence of the production site environment

[0027] 3. Various electromagnetic interference sources on the production site have great interference on the detection device, resulting in distortion and distortion of the output of the photoelectric detection device, causing the system to malfunction or cause production accidents

[0028] 4. During the operation of the locomotive, the photoelectric detection device will cause misjudgment due to slipping, and cannot correctly detect the running status of the rail car

[0029] 5. It can only detect the position of the rail car, but cannot reflect the current running speed of the rail car in real time

[0030] 6. With the length of the track, the cost of the device will increase accordingly, and the error of the device will also increase cumulatively

[0031] 7. Not suitable for multi-point positioning

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