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Single-key multi-purpose method and device with voltage protection function

A technology of voltage protection and function, applied in the field of single-key multi-purpose method and device, which can solve the problems of high production cost of gas detection and alarm instruments, and achieve the effect of low cost, few components and parts, and reduced production cost

Pending Publication Date: 2022-07-22
河南省保时安电子科技有限公司
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Problems solved by technology

[0003] In order to solve the problem that the existing high-integration, high-precision, and high-priced chips are used to realize the voltage protection function, resulting in high production costs of gas detection and alarm instruments, the present invention provides a single-key multi-purpose method and device with voltage protection function

Method used

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  • Single-key multi-purpose method and device with voltage protection function
  • Single-key multi-purpose method and device with voltage protection function
  • Single-key multi-purpose method and device with voltage protection function

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Embodiment Construction

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments.

[0030] Embodiment of the single-key multi-purpose method with voltage protection function:

[0031] like figure 1 As shown, a single-key multi-purpose method with voltage protection function is provided, comprising the following steps:

[0032] Step S101, obtain the button signal, the power control signal and the voltage signal of the external power adapter; when at least one of the button signal, the power control signal and the voltage signal of the external power adapter is at a high level, make The enable terminal of the power supply chip is used to control the power supply chip to output the power output signal.

[0033] Among them, the but...

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Abstract

The invention discloses a single-key multi-purpose method and device with a voltage protection function, and relates to the technical field of instrument application. When at least one of a key signal, a power supply control signal and a voltage signal of an external power adapter is at a high level, an enabling end of a power supply chip is enabled so as to control the power supply chip to output a power supply output signal; and when it is detected that the voltage value corresponding to the power supply output signal is not within the set voltage range, the enabling end of the power supply chip is disabled to control the power supply chip to stop outputting the power supply output signal so as to realize a voltage protection function. According to the invention, fewer separated components are adopted, the voltage protection function is realized, the circuit is simple and reliable, fewer components are used, the cost is low, and the production cost of the instrument is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of instrumentation applications, in particular to a single-key multi-purpose method and device with a voltage protection function. Background technique [0002] At present, with the development of industrial technology, various instruments and meters are widely used, especially the application of gas detection alarms in mining, chemical industry and other industries. Due to the special use environment of gas detection alarms, the alarms are required to be safe , stability, compactness, few buttons, and many functions. For this reason, in order to realize the multi-purpose function of a single button, industry technicians have proposed different power-on circuits, button use circuits, and voltage protection circuits. The existing technology uses high integration, High-precision, high-priced chips or related devices realize the function of voltage protection, which makes the cost of using the gas detection and...

Claims

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Application Information

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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/24215
Inventor 步东伟曹振亚白俊伟
Owner 河南省保时安电子科技有限公司
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