Train approach alarming trigger device and method

Abstract

The invention discloses a train approach alarming trigger device. The device adopts an orthogonal Doppler radar detection technique, under the circumstance that detection equipment does not need to be mounted on an upper track, for example, the device can be mounted outside a train track guard railing and within the range of 30 meters away from a train track, both train approach detection and train approach direction detection can be realized, and trigger signals are provided for a train approach alarming device. The device comprises a radar sensor module, a Doppler signal amplification conditioning module, a power management module, a dual-backup physical isolation wireless receiving and dispatching module (a radio frequency processing module 1 and a radio frequency processing module 2), an MCU module, a minimum system, a serial communication module, an outside watchdog module and the like. The device has the outstanding characteristics that the Doppler radar detection technique is adopted, the device has a low power consumption control mode, the dual-backup physical isolation wireless receiving and dispatching module is used for reliably uploading detection information, a solar electricity supplying scheme can be supported, reliable stable trigger signals are provided for train approach alarming, and besides, the device is convenient to mount and high in applicability.

Description

technical field [0001] The invention relates to an early warning signal for a train approaching alarm system, and is applicable to the field of train approaching direction and speed detection, in particular to a train approaching alarm triggering device and method invented by adopting orthogonal Doppler radar detection technology. Background technique [0002] In recent years, with the rapid development of my country's economy, railways have become the main means of transportation in my country and also the main economic artery of China. With the third major speed increase of my country's railways and the operation of high-speed trains such as high-speed rail and EMUs, the speed of railway trains The minimum speed is 120km / h, and the maximum speed is close to 300km / h. In order to ensure the safety and smoothness of the railway, the departments of railway vehicles, public works and electric services must frequently maintain the railway facilities. [0003] Traditional train ar...

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Problems solved by technology

The disadvantage is the waste of human resources, which is greatly affected by environmental factors, such as blind spots of communication signals, insufficient power supply of equipment, etc.

[0005] Option 2. Using the magnetic head installed on the track for induction has the following problems: the installation of the magnetic head must be carried out on the train track, and the installer has safety risks, and must be installed during the construction skylight period, which is very troublesome; when the train track is overhauled, it is necessary to Remove the magnetic head before overhauling the sunroof, and then install it back after the overhaul is completed, which is very troublesome to maintain; the magnetic head is heavy and needs to occupy warehouses and maintenance vehicles, which is very unsuitable for mobile operations

In the case of very heavy transportation tasks, it is impossible to interrupt the busy transportation for this kind of maintenance and construction. Therefore, when the staff worked online in the past, in order to ensure the safety of the on-site construction personnel, a relatively long protection zone was set in advance. A number of guards are required to observe on both sides every 2km from the construction site to remind trains to pass, such as figure 1 As shown, this approach wastes human resources. Sometimes due to the long protection interval, natural conditions such as climate and human factors, the protection personnel often fail to notify the on-site construction personnel in time, which is likely to pose a threat to the personal safety of the construction personnel.

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