Method for digitally displaying alarm unit number

Abstract

The invention provides a method for alarm unit number digital display of an integrated alarm device. The method is that a plurality of resistors with same ohmic value are connected into a series resistor, both ends of the series resistor are imposed with stable voltage, the signal earthed end of a digital voltmeter is connected with one low potential end of the series resistor, the signal input positive end of the digital voltmeter is respectively connected with contacts between each two resistors and one high potential end of the series resistor through a respective group of normally opened contacts of a plurality of relays, the working voltage of the relays are provided by alarm unit circuits that the relays belong to. The invention has simple layout and easy debugging, can be taken as adding a digital display function based on the circuit indicated by the prior indicator, and has the advantages of low cost increase, intuitive number display of the light-emitting digital tube, easy maintenance of the display assembly. The method is feasibly applied in the integrated alarm device with a plurality of alarm units or the multi-address calling prompt system.

Description

technical field [0001] The invention relates to a method for displaying the number of an alarm unit by a digital luminous tube used in an integrated alarm. Background technique [0002] The integrated wired alarms of many alarm units in installation and use indicate the number of the alarm unit with the indicator light through the relay, which has the disadvantages that it needs to be checked nearby and is not intuitive enough. Many people in the industry believe that integrated alarms in wired mode cannot be achieved relatively easily with digital light-emitting tubes to display alarm numbers, which makes traditional integrated alarms show a new look. Contents of the invention [0003] In order to solve the above-mentioned problems, the present invention provides a method for digitally displaying the number of the alarm unit in an integrated alarm. It is the DC voltage or AC voltage of the number of alarm units to ensure that the potential formed on the contact between e...

AI Technical Summary

Problems solved by technology

[0002] The integrated wired alarm of many alarm units in installation and use indicates the number of the alarm unit through the relay with the indicator light, which has the disadvantage of needing to be checked nearby and not intuitive enough

Many people in the industry believe that the wired integrated alarm cannot be achieved relatively easily. The digital light-emitting tube can be used to display the alarm number, which makes the traditional integrated alarm show a new look.

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