Startup and shutdown circuit

A switching circuit and switching technology, applied in computer control, instruments, simulators, etc., can solve problems such as power loss, file system damage, and excessive standby current.
CN103226337AActive Publication Date: 2013-07-31SHENZHEN COMEN MEDICAL INSTR
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENZHEN COMEN MEDICAL INSTR
Publication Date
2013-07-31

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Abstract

The invention relates to a startup and shutdown circuit which comprises a startup key, a startup delay circuit, a startup buffer circuit, a startup and shutdown enabling circuit, a power circuit, a startup level locking circuit, a shutdown detection circuit and a singlechip control circuit, wherein the startup key, the startup delay circuit, the startup buffer circuit and the startup and shutdown enabling circuit are sequentially connected; the startup and shutdown enabling circuit is connected with the power circuit; the power circuit, the startup level locking circuit and the startup delay circuit are sequentially connected; the power circuit is further connected with the startup buffer circuit; and the shutdown detection circuit, the singlechip control circuit and the startup and shutdown enabling circuit are sequentially connected. The startup and shutdown circuit is applicable to a multi-parameter monitor, improves the system stability through hardware startup and software shutdown, has the advantages of simplicity, stability, low standby current, low energy consumption, flexible design and the like, and greatly improves a use effect of a user.
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Description

【Technical field】

[0001] The invention relates to the way of hardware startup and software shutdown of an instrument, in particular to a switch circuit. 【Background technique】

[0002] At present, in the application of medical equipment, there are mainly two ways to design the switch machine circuit, one is to control the switch machine by hardware, and the other is to control the switch machine by software.

[0003] The way of hardware switch is to turn on or off the power of the control system by pressing and disconnecting the power button. The advantage is that the principle is very simple to realize. : When the power switch is turned off, the system power will be turned off immediately, and the configuration data of the monitor cannot be stored by some users. If the key is pressed when the microprocessor is processing key programs or storing key data, the system power will be turned off. It is easy to cause loss of important data and damage to the file system.

[0004] ...

Claims

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