Alarm circuit capable of setting parameter for detecting earthquake precursor
A technology of alarm circuits and precursors, applied in alarms, instruments, etc., can solve problems that do not involve earthquake precursors
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 refer to figure 1 . The single-chip microcomputer adopts PIC16C57 eight-bit single-chip microcomputer.
 The invention includes a thermocouple temperature sensor, which is placed in well water in an earthquake-prone area, and the thermocouple temperature sensor is connected with an A / D converter, and the A / D converter and a group of light touch keys are connected with the input end of a single chip microcomputer. connection, the output end of the single chip microcomputer is respectively connected with the liquid crystal display screen and the input end of the switch tube, and the output end of the switch tube is connected with the buzzer and the light emitting diode respectively. The single-chip software compares the current well water temperature measured with the previous well water temperature measured by the thermocouple temperature sensor stored in the single-chip memory, and can measure the abnormal change of the well water temperature, the measurement an...
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