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Alarm input device and method

A technology of alarm input and bias, applied in electrical components, pulse technology, electronic switches, etc., can solve problems such as inability to detect

Pending Publication Date: 2022-04-01
浙江华锐捷技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In this embodiment, an alarm input device and method are provided to solve the problem that the alarm input circuit in the related art cannot detect the switching signal of the switch opening / switch closing to the power supply

Method used

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  • Alarm input device and method

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Embodiment Construction

[0045] In order to understand the purpose, technical solution and advantages of the present application more clearly, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0046] Unless otherwise defined, the technical terms or scientific terms involved in the application shall have the general meanings understood by those skilled in the technical field to which the application belongs. In this application, words like "a", "an", "an", "the", "these" and the like do not denote quantitative limitations, and they may be singular or plural. The terms "comprising", "comprising", "having" and any variants thereof referred to in this application are intended to cover non-exclusive inclusion; for example, processes, methods and The system, product or device is not limited to the steps or modules (units) listed, but may include steps or modules (units) not listed, or may include other steps or modules inherent to the...

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Abstract

The invention relates to an alarm input device and method, and the device comprises a bias voltage applying module, a voltage dividing module, and a control processing module. The bias voltage applying module is used for applying bias voltage to the alarm input port; the bias voltage applying module comprises a bias voltage generating unit and a bias applying unit; the bias voltage generation unit generates a bias voltage, and the bias voltage is applied to the alarm input port through the bias application unit; the voltage dividing module is connected with the alarm input port, and the voltage dividing module is used for carrying out voltage dividing processing on port voltage on the alarm input port to obtain first voltage; the control processing module collects a first voltage and determines an alarm event type according to the first voltage. The input alarm signals are mapped to different voltage intervals, so that different alarm signals can be detected, and the problem that an alarm input circuit in the related technology cannot detect a switch type signal of switching off / switching on to a power supply is solved.

Description

technical field [0001] The present application relates to the technical field of safety protection, in particular to an alarm input device and method. Background technique [0002] In the application of the alarm input of vehicle equipment, in order to adapt to the alarm access of various equipment, the alarm input needs to support switch type signals and level type signals. Among them, the switch-type signal is an external switch, including two cases where the switch is open / closed to the vehicle ground and the switch is opened / closed to the vehicle power supply; the level-type signal means that the connected alarm signal is a level signal, including the vehicle There are two levels of ground and vehicle power. [0003] The existing alarm input circuit implemented by the combination logic composed of transistors can only detect the alarm input of the level type alarm signal and the switch type in which the switch is open / closed to the signal ground, but cannot realize the ...

Claims

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Application Information

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IPC IPC(8): H03K17/94
Inventor 余成林高松全侯梦晓
Owner 浙江华锐捷技术有限公司