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Underwater electronic switch tremble eliminating method

A technology of electronic switch and working voltage, which is applied in the electronic field, can solve the problems of increasing the manufacturing cost of electronic switches, and achieve the effect of huge cost advantage

Active Publication Date: 2018-03-09
杭州培宇电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods will increase the manufacturing cost of electronic switches, which is obviously unacceptable in mass production

Method used

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  • Underwater electronic switch tremble eliminating method
  • Underwater electronic switch tremble eliminating method
  • Underwater electronic switch tremble eliminating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] refer to figure 1 , the electronic switch is connected in series with the pull-up resistor, the other end of the electronic switch is grounded, the other end of the pull-up resistor is inserted into the power supply V, the connection point of the pull-up resistor and the electronic switch is connected to the I / O interface of the I / O chip, and the I / O The output end of the chip is connected with the motherboard.

[0031] refer to figure 2 , the waveform of the power supply V is a half-sine wave. The section of the sinusoidal waveform of the power supply V is a high-voltage section, while the other sections are low-voltage sections. Put the disconnected electronic switch into water, and in the high voltage section, an electric field is formed between the two contacts of the electronic switch. Under the action of the electric field, the negatively charged particles in the water move from the ground contact (low potential contact) of the electronic switch to the contact...

Embodiment 2

[0041] The difference between the second embodiment and the first embodiment is that the output voltage waveform of the power supply V in the second embodiment is a square wave, refer to image 3 . Compared with the power supply whose output voltage waveform is a sine half wave, the power supply V whose output voltage waveform is a square wave, in its high-level section, the trend of the speed change of negatively charged particles in water moving between the two contacts of the electronic switch Better prediction—that is, the change trend of water resistance is better judged, which is convenient for debugging and shortens the debugging time.

Embodiment 3

[0043] This embodiment is directed to electronic switches made of highly reactive metals. The following is a detailed description of common copper sheet electronic switches:

[0044] Because copper is more reactive than steel, copper chip switches are more susceptible to corrosion underwater than stainless steel chip switches. Therefore, to make the copper sheet electronic switch use underwater, it is particularly important to prolong its service life.

[0045] refer to Figure 5 , the electronic switch is connected in series with the pull-up resistor, the other end of the pull-up resistor is connected to the power supply V1, and the other end of the electronic switch is connected to the power supply V2.

[0046] refer to Figure 6 , the output voltage waveforms of the power supply V1 and the power supply V2 are both sine waves, and the output voltage waveform of the power supply V1 and the voltage output waveform of the power supply V2 have the same cycle and the phase dif...

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PUM

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Abstract

The invention discloses an underwater electronic switch tremble eliminating method. According to the method, periodic high and low work alternate voltages are provided for an electronic switch, the water resistance characteristic is utilized, the proper sampling time is selected through debugging, and accurate signals are acquired and analyzed to determine whether the underwater electronic switchis pressed. Compared with modes of coating waterproof adhesive in the electronic switch or ameliorating the structure of the electronic switch to make the electronic switch have the waterproof structure, the method is advantaged in that a software and hardware combination mode is employed, on the condition that waterproof treatment is not carried out, the electronic switch is made to work normallyunderwater, and the great cost advantage is realized.

Description

technical field [0001] The invention relates to the field of electronic technology, more specifically, it relates to a debounce method for an electronic switch used underwater. Background technique [0002] In some cases, it is desirable to operate electronic switches underwater. However, due to the conductivity of water, an electronic switch placed in water will be turned on by water even if it is not pressed. Such as figure 1 , which is a common connection method between electronic switches and chips. The electronic switch SB is connected in series with the pull-up resistor R, the other end of the pull-up resistor R is connected to the power supply V1, and the other end of the electronic switch SB is grounded, and the connection point between the electronic switch SB and the pull-up resistor R is connected to the I / O interface of the chip . When the SB is disconnected, the I / O interface of the chip is a high-level input; and when the SB is closed, the I / O interface of ...

Claims

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Application Information

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IPC IPC(8): G05B19/042
CPCG05B19/0425G05B2219/2612
Inventor 应立荣
Owner 杭州培宇电子有限公司