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Method for detecting train beacon misreading
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A technology for detecting trains and beacons, which is applied in the field of missed-reading detection of trains, and can solve the problems of missing beacons and beacons that can no longer be read.
Active Publication Date: 2015-12-30
浙江众合科技股份有限公司
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Problems solved by technology
Although the method of positioning through beacons reduces the uncertainty compared with the method of positioning through wheel speed sensors alone, there are still some problems. The location of the beacons on the ground is wrong, or the beacon antenna is faulty. It will lead to missed reading of the beacon. When the train has passed the actual beacon on the ground, the beacon has not been read by the train, and the beacon can no longer be read
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Embodiment 1
[0025] figure 1 The method for detecting missing beacon readings of a train according to Embodiment 1 of the present invention is shown, and the method specifically includes the following steps:
[0026] Step A1: The maximum possible position of the beacon antenna is periodically provided by the wheel speed sensor;
[0027] Step A2: If the range scanned by the beacon antenna at the maximum possible position in the previous cycle contains the theoretical position of the beacon, add the beacon corresponding to the theoretical position of the beacon to the beacon queue and enter step A3, otherwise enter Step A4;
[0028] Step A3: Detect whether the beacon antenna in the last cycle has read the beacon, and delete the beacon from the beacon queue when it is read;
[0029] Step A4: If the beacon is still in the beacon queue in the next cycle, judge whether it is in the beacon queue again after a delay for a set period of time, if the beacon is still in the beacon queue , it promp...
Embodiment 2
[0037] image 3 Shown is the beacon miss-reading detection method of the train in the second embodiment of the present invention, the method specifically includes the following steps:
[0038] Step B1: obtaining the maximum possible position and the minimum possible position of the beacon antenna;
[0039] Step B2: If the range scanned by the beacon antenna at the maximum possible position in the previous cycle contains the theoretical position of the beacon, add the beacon corresponding to the theoretical position of the beacon to the beacon queue and enter step B3, otherwise enter Step B4;
[0040] Step B3: Detecting whether the beacon antenna in the previous period reads the beacon, and deletes the beacon from the beacon queue when it is read;
[0041] Step B4: Judging whether the range scanned by the beacon antenna at the minimum possible position in the previous cycle contains the theoretical position of the beacon, if yes and the beacon is in the beacon queue, then enter...
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Abstract
The invention discloses a method for detecting train beacon misreading. The method comprises the following steps of acquiring a most probable position and a least probable position of a beacon antenna; adding a beacon which corresponds to a beacon theoretical position into a beacon queue if the range scanned by the beacon antenna in the most probable position in the last period includes the beacon theoretical position; detecting whether the beacon antenna in the last period reads the beacon or not, and deleting the beacon from the beacon queue when the beacon antenna in the last period reads the beacon; judging whether the range scanned by the beacon antenna in the least probable position in the last period includes the beacon theoretical position or not, and judging whether the beacon is in the beacon queue or not; if yes, judging whether the beacon is in the beacon queue or not again after a period of setting time is delayed, and prompting beacon misreading if the beacon is still in the beacon queue. According to the method for detecting the train beacon misreading, the beacon misreading caused by the facts that the beacons on the ground are misarranged in the arrangement process or the beacon antenna is in failure can be detected.
Description
[0001] The patent application of the present invention is a divisional application of the invention title "Missed Reading Detection Method for Train Beacons". The filing date of the original application is February 26, 2014, and the application number is 2014100667481. technical field [0002] The invention relates to the field of urban rail transit control systems, in particular to a method for detecting missing reading of train beacons. Background technique [0003] In modern rail transit control systems, beacons are key equipment for vehicle-to-ground communication, and are widely used in the positioning of urban rail transit trains. Since the theoretical beacon positions of all beacons on the ground that communicate with the train have been stored in the track database, when the train passes a beacon corresponding to the theoretical position of the beacon and reads it through the beacon antenna scanning, it can be called The theoretical value in the track database determ...
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