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Prevent closing of elevator doors when passengers approach, stand near or at the door edge, even from a flat angle. 2.5 cm from elevator cabin. 3.0 cm from elevator lobby. 50 cm for door horizontal sensing. 1.8 m for door vertical sensing. Should not fail if any fail-safe related to safety device fails.
The cost would be around $31.7 million to install, plus $5 million in annual maintenance costs. [157] Since the clocks are based on the Transit Wireless Wi-Fi, installation of each set of displays would cost $211,000 at every aboveground station (which did not have Transit Wireless as of 2016 [update] ) and $54,000 at every underground station ...
For example, elevators are equipped with an interlock that prevents the moving elevator from opening its doors and prevents the stationary elevator (with open doors) from moving. Interlocks may include sophisticated elements such as curtains of infrared beams , photodetectors , simple switches , and locks .
Half-height platform edge doors, also known as automatic platform gates, are cheaper to install than full-height platform screen doors, which require more metallic framework for support. Some railway operators may therefore prefer such an option to improve safety at railway platforms and, at the same time, keep costs low and non-air-conditioned ...
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Many regional trains in Germany come with platform gap fillers, such as the Bombardier Talent 2. [1] On subway networks, they have also become more common, as evidenced by the Nuremberg U-Bahn whose 1970s first generation VAG Class DT1 do not have them but whose VAG Class DT3 of the 2000s and 2010s and VAG Class G1 of the 2020s come equipped with automatic gap fillers.
Nevertheless, the LTA reversed its decision and made plans to install half-height platform screen doors in all elevated stations on 25 January 2008. [ 82 ] [ 83 ] The first platform screen doors by ST Electronics [ 84 ] were installed at Jurong East , Pasir Ris , and Yishun stations in 2009 under trials to test their feasibility.
Actuator Sensor Interface (AS-Interface or ASi) is an industrial networking solution (Physical Layer, Data access Method and Protocol) used in PLC, DCS and PC-based automation systems. It is designed for connecting simple field I/O devices (e.g. binary ON/OFF devices such as actuators, sensors, rotary encoders, analog inputs and outputs, push ...
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