Intelligent slipper low-temperature distance measurement device and method

Abstract

The invention discloses an intelligent slipper low-temperature distance measurement device and method. The device comprises a distance detection module, a temperature module, a power management module, a battery, a main control module, and a wireless transmission module. The distance detection module, the wireless transmission module and the temperature module are respectively connected with the main control module, and the main control module is used for the operation coordination of a whole system. The method employs four types of methods to improve the low-temperature ultrasonic ranging precision according to temperature difference, and comprises the steps: correcting a sound speed through temperature; adjusting a driving voltage of an ultrasonic probe; dynamically adjusting the number of transmitted pulses according to the temperature, and adjusting the threshold voltage of a receiving end. Through the adjustment of software and hardware circuits, the device and method improve the distance measurement precision of an intelligent slipper under low temperature, especially in a northern cold region, and plays an important role in preventing a train from escaping and guaranteeing the safety.

Description

Technical field [0001] The invention relates to the field of railway anti-slip, in particular to a method based on ultrasonic ranging and improving the accuracy of iron shoe ranging in a low temperature environment, in particular to an intelligent iron shoe low temperature ranging device and a ranging method. Background technique [0002] In recent years, railway transportation has developed in a fast and efficient direction, which has put forward higher requirements for safety. As the main tool to prevent walking when the train stops, iron shoes play an extremely important role in train operation. At present, traditional mechanical iron shoes can no longer meet the needs of informatization and intelligence, and intelligent iron shoes have emerged. [0003] At present, smart iron shoes widely use ultrasonic distance measurement methods to determine whether the iron shoes are placed in place when the train stops. The application found that temperature has a great influence on the ...

AI Technical Summary

Problems solved by technology

The application found that the temperature has a great influence on the smart iron shoe ranging system: for example, when the temperature drops below zero, the vibration amplitude of the probe decreases, and the echo amplitude decreases. When the selected threshold voltage is constant, the system will misjudge the detection The distance becomes larger

When smart iron shoes are used in cold regions, such as the Northeast region, due to the large ranging error, the popularization and application of smart iron shoes is seriously restricted

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