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1. Implementation background
The East Line of the Hong Kong Metro is the main link connecting Hung Hom in Hong Kong with Shenzhen Luohu, Lok Ma Chau, and even mainland China. It carries hundreds of thousands of people, or even millions of people, every 3 minutes. The train service on the whole line is approximately 30 units.
Because the train service time is as long as 18 hours a day, and the stay time at each station is as short as 1 minute, in the past, it was difficult for the subway to check the health of the vehicle in real time. The power system, power supply system, etc. often experience abnormalities during train operation after high temperature or long-term operation, causing trains to be paralyzed on the road for many times, and railway traffic conditions are delayed for several hours. Multiple trains are stranded, and tourists travel on the mainland during peak hours. It is difficult to estimate the economic losses caused during the period, the peak period of Hong Kong people’s return to their hometown, and the peak period of commuting.
The train immediately returned to the main plant, but the engineers were unable to test and inspect hundreds of important equipment on each train one by one. The inspection takes a long time, and it also requires experienced technicians to judge the possible problems of the train during operation based on the train’s condition in the factory. Each component is expensive, but testing is extremely lacking.
2. RFID temperature control can also be the doctor of the train
The Hong Kong Metro has used the RFID active products of Baorong Yingfeng (Bisha) Technology for a long time in the past, and has full confidence in Baorong Yingfeng’s products. Under the innovative thinking of subway technical engineers, in response to the new technical needs of the subway, Baorong Yingfeng (Bisha) re-developed a recording-type high-temperature and high-precision RFID temperature tag to provide the power supply and engine installed in the subway train. On the components, through the temperature analysis, whether the instrument becomes warmer, it may enter abnormal operation and may malfunction.
The excellent performance of the temperature label is as follows:
The tag can record and store information such as temperature points, clocks, tag battery status, etc. The storage space is up to 1000 pieces of information. When the train passes the station, the temperature information can be completely transmitted in less than 20 seconds. The control center can view the health status of each device. Realize real-time reports every minute.
The temperature tag collects the ambient temperature and supports ultra-high temperature, that is, 0~+200℃. Using the superior PT100 temperature probe, the label temperature calibration report has been certified by authoritative organizations including the National Bureau of Metrology.
The temperature label can be tightly attached to the instrument, and the fixed method currently provides circular and cylindrical probes, which greatly reduces the temperature difference caused by poor contact.
The existing probe cable supports high temperature resistance of +220℃, has the characteristics of compression and tension resistance, and the length of the probe cable can be up to 300cm, which can be flexibly installed in various harsh environments under the car.
The label has an advanced power-saving mode and an open setting function. The user independently sets the temperature label sending interval, receiving interval, recording start, and recording interval. When the train returns to the terminal at night, it enters the stop recording mode.
From the start of the system to the present, the east line of the Hong Kong Metro has sent back information through temperature control, and successfully detected train failures in advance, preventing the train from becoming paralyzed on the road. The inspection technicians of the main plant changed the inspection process and connected to each station through the WIFI network to receive the equipment temperature information of each train, so as to realize remote diagnosis and repair immediately after returning to the factory.
Baorong Yingfeng (Bisha) RFID active temperature control has become an excellent doctor’s earpiece for online diagnosis of valuable equipment in industry, transportation and other industries, solving problems for operation and maintenance departments.
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Shenzhen Baorong Yingfeng Technology Co., Ltd.
For more information: 0755-26880962
E-mail:[email protected]
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