Emergency information media switching device of lift car and switching method thereof
A switching device and elevator car technology, applied in the direction of transportation and packaging, elevators, etc., can solve the problem of not being able to obtain external emergency information and emergency information
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[0023] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Other embodiments obtained by those skilled in the art without creative efforts all belong to the protection scope of the present invention.
[0024] Such as figure 1 As shown, the elevator car emergency information switching device provided in this embodiment is connected with an FM radio module, a USB interface circuit and a relay driving circuit. Wherein, the contacts of the relay driving circuit are connected with the control button and the audio output port of the player.
[0025] In this embodiment, the switching device includes:
[0026] A sending unit that sends the frequency value of the emergency information stored internally to the FM radio module for the FM radio module to detect whether the emergency information corresponding to the frequency value exists;
[0027] A receiving unit that obtains the detection result fed back ...
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Abstract
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