Speed-measuring function test platform for vehicle-mounted system for measuring speed based on speed sensor

A speed sensor and acceleration sensor technology, applied in railway vehicle testing, linear/angular velocity measurement, velocity/acceleration/impact measurement, etc., can solve problems such as high test environment requirements, unsatisfactory test results, and complicated implementation.

Active Publication Date: 2015-05-20
SHANGHAI FUXIN INTELLIGENT TRANSPORTATION SOLUTIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of method has high requirements on the test environment, is more complicated to implement, and has certain risks, and the test effect is not ideal.

Method used

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  • Speed-measuring function test platform for vehicle-mounted system for measuring speed based on speed sensor
  • Speed-measuring function test platform for vehicle-mounted system for measuring speed based on speed sensor
  • Speed-measuring function test platform for vehicle-mounted system for measuring speed based on speed sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] The speed measurement function test platform of the vehicle system based on the speed sensor speed measurement, such as figure 1 As shown, it includes traction brake position module, traction brake acceleration calculation module, wheel speed calculation module and parameter setting module;

[0073] The traction brake position module is used to obtain the position of the traction brake lever;

[0074] The traction braking acceleration calculation module is used to calculate the traction braking acceleration of the locomotive according to the position of the traction brake lever, and output it to the wheel speed calculation module and the vehicle-mounted system based on speed sensor speed measurement;

[0075] The wheel speed calculation module is used to calculate the locomotive speed, speed sensor pulse count, and speed sensor count pulse width according to the traction braking acceleration of the locomotive, and output the speed sensor pulse count and speed sensor cou...

Embodiment 2

[0093] Based on the speed measurement function test platform of the vehicle-mounted system based on the speed sensor speed measurement of Embodiment 1, the traction braking acceleration calculation module of the locomotive is calculated in the following manner to obtain the traction braking acceleration of the locomotive:

[0094] a train =a f +g*i+h;

[0095] a f = k * mg μ tc - F c - F b - F tn ...

Embodiment 3

[0130] Based on the first embodiment, the speed measurement function test platform of the vehicle-mounted system based on the speed sensor speed measurement, the locomotive wheel speed calculation module includes the first pulse count output module of the first speed sensor, the second pulse count output module of the first speed sensor, and the second pulse count output module of the first speed sensor. The first pulse count output module of the second speed sensor, the second pulse count output module of the second speed sensor;

[0131] The first pulse count output module of the first speed sensor is used to output the first pulse count of the first speed sensor to the vehicle-mounted system based on the speed sensor speed measurement;

[0132] The second pulse count output module of the first speed sensor is used to output the second pulse count of the first speed sensor to the vehicle-mounted system based on the speed sensor speed measurement;

[0133] The first pulse cou...

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Abstract

The invention discloses a speed-measuring function test platform for a vehicle-mounted system for measuring the speed based on a speed sensor. A test object is the speed-measuring function of the vehicle-mounted system for measuring the speed based on the speed sensor; speed sensor or acceleration sensor information which is calculated through the set model is input into the vehicle-mounted system; and testing of the speed-measuring algorithm function of the vehicle-mounted system can be achieved for testing personnel on a software view. The testing platform is capable of acquiring acceleration information which is close to that of a real vehicle as much as possible by vehicle stress analysis without complicated speed-measuring filtering and slipping judgment algorithms, and simulating the vehicle slipping scene through dynamic slip rate control, so that the input signal of the vehicle-mounted system is relatively close to that of the real vehicle, and a relatively accurate test effect is achieved.

Description

technical field [0001] The invention relates to the field of urban rail transit safety signals, in particular to a speed measurement function test platform of a vehicle system based on speed sensor speed measurement. Background technique [0002] In the field of urban rail transit safety signals, train speed and distance measurement (referred to as speed measurement and distance measurement) is one of the key technologies of the Automatic Train Protection (ATP) system of safety integrity level SIL4 in the on-board signaling system. [0003] At present, the ATP system generally uses speed measuring equipment such as speed sensors, coded odometers or radar speedometers to measure the angular velocity of the locomotive wheels or the distance traveled by the wheels. These external devices are usually installed on the brake axle of the train. Analyze the sensor signal of the speed measuring device to calculate the wheel speed and travel distance. [0004] IEEE1474.1 Communicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61C17/00G01P3/481
CPCG01M17/08G01P3/481
Inventor 朱罕袁亮杜建新王庆胜张艳
Owner SHANGHAI FUXIN INTELLIGENT TRANSPORTATION SOLUTIONS
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