Device and method for realizing one-key startup and shutdown functions of portable instrument
A key switch, portable technology, applied in the electronic field, can solve the problems of high cost, technical difficulty, power loss, etc., and achieve the effect of low cost, simple implementation method, stable and reliable function
Active Publication Date: 2013-05-08
CHINA GEOKON INSTR
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Problems solved by technology
[0003] Aiming at the problems that the existing one-button on / off method still has power loss and high cost and technical difficulty in the shutdown state, the present invention provides a new type of device for realizing the one-button on / off function of a portable instrument, which can truly It meets the technical requirements of zero power consumption in the shutdown state, and also has the advantages of simple structure, reliable performance and low cost
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Embodiment Construction
[0030] The present invention will be described below in conjunction with the accompanying drawings.
[0031] The invention discloses a device for realizing the one-button on / off function of a portable instrument. The preferred structural block diagram of the device is as follows: figure 1 As shown, it includes a latching relay and a latching relay switch setting circuit 9 and a latching relay switch reset circuit 10 respectively connected to the latching relay. The magnetic latching relay switch setting circuit 9 comprises a button, a photoelectric coupler and a first relay drive circuit connected in turn by the power supply, the input end of the photocoupler is connected with the terminal of the button, and the other terminal of the button is connected with the power supply, and the photoelectric coupler The output terminal of the device is connected with a terminal of the first relay drive circuit, and the other terminal of the first relay drive circuit is connected with the...
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The invention relates to a device and method for realizing one-key start and stop functions of a portable instrument. The device comprises a magnetic latching relay and a magnetic latching relay switch setting circuit and a magnetic latching relay switch reset circuit which are connected with the magnetic latching relay respectively, wherein the magnetic latching relay switch setting circuit is used for picking up a key switch status signal and triggering the magnetic latching relay to make a moving contact of the magnetic latching relay be in a setting status so as to realize startup; the magnetic latching relay switch setting circuit is also used for supplying power to the magnetic latching relay switch reset circuit; and a counter is arranged in the magnetic latching relay switch resetcircuit and is used for counting the picked odd and even key switch status signals and triggering the magnetic latching relay to make the moving contact of the magnetic latching relay be in a reset status so as to realize shutdown by a change of a count value of the counter. The device can truly reach technical requirements of zero power consumption in the shutdown status and is simple in structure, reliable in performance and low in cost.
Description
technical field [0001] The invention relates to the field of electronic technology, in particular to a device and method for realizing the one-button on / off function of a portable instrument. Background technique [0002] In the field of electronic technology, portable instruments and equipment have been widely used. Generally, portable instruments or equipment need to consider power saving, so it is inevitable to set the power-on / off function. The switch function can be realized by various methods and means. The simplest method is to use a mechanical switch to directly connect or cut off the power supply. This method was widely used in early equipment, but due to the appearance, volume, assembly process, and the peak current flowing through the switch, the mechanical switch is too high. Large and many other reasons are gradually replaced by other switch circuit realization methods. Current electronic products generally use thin-film keys and the panel of the product to be...
Claims
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IPC IPC(8): H03K17/94H03K17/78
Inventor 毛良明沈省三江修
Owner CHINA GEOKON INSTR