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Safety protection circuit of electric fan

A technology of safety protection circuit and electric fan, applied in the direction of emergency protection circuit device, circuit device, emergency protection device with automatic disconnection, etc. effect of accident

Inactive Publication Date: 2012-05-16
郑小孩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The electric fans on the market only have the functions of steering and speed regulation. Although the electric fan blades are equipped with metal mesh covers, children can still insert their fingers because of their thinner fingers, which poses a safety hazard. The electric fan does not have touch power-off protection and alarm function

Method used

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  • Safety protection circuit of electric fan
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Embodiment Construction

[0008] The present invention will be further described below in conjunction with accompanying drawing.

[0009] like figure 1 Shown, the present invention comprises microprocessor, the touch sensor that is connected with microprocessor, the switch circuit that is connected with microprocessor, the alarm circuit that is connected with microprocessor, for microprocessor, inductive sensor, switch circuit and alarm circuit A power supply circuit that provides a stable operating voltage. The microprocessor adopts a single-chip microcomputer, the switch circuit adopts a non-contact switch circuit, and the induction sensor is installed on the metal mesh cover of the fan.

[0010] When no one touches the metal mesh cover of the fan, the microprocessor does not work, and the fan motor works normally. If someone touches the metal mesh cover of the fan, the inductive sensor outputs a signal to the microprocessor, and the microprocessor outputs a high level to the switch. The circuit th...

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Abstract

The invention discloses a safety protection circuit of an electric fan and belongs to the technical field of protection of electric appliances. The safety protection circuit of the electric fan comprises a microprocessor, an induction sensor which is connected with the microprocessor, a switching circuit which is connected with the microprocessor, and a power circuit. The safety protection circuit of the electric fan has the advantage that: when a metal mesh cover of the electric fan is touched by a person, the electric fan can timely stop running, and a barking alarm is given, so that an accident can be avoided.

Description

technical field [0001] The invention relates to an electric appliance protection device, in particular to an electric fan safety protection circuit, which belongs to the technical field of electric appliance protection. Background technique [0002] The electric fans on the market only have the functions of steering and speed regulation. Although the electric fan blades are equipped with metal mesh covers, children can still insert their fingers because of their thinner fingers, which poses a safety hazard. Electric fans do not have touch power-off protection and alarm functions. Contents of the invention [0003] Aiming at the deficiencies in the above-mentioned prior art, the present invention provides a safety protection circuit for an electric fan. When someone touches the metal mesh cover of the fan, the fan will stop, and the speaker will emit a sound to give an alarm. [0004] In order to achieve the above object, the technical solution adopted by the present inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H5/12H02H3/04
Inventor 郑小孩
Owner 郑小孩