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

Inactive Publication Date: 2008-12-24
谭启仁
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But the prior art does not involve the de

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  • Alarm circuit capable of setting parameter for detecting earthquake precursor

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Embodiment Construction

[0008] refer to figure 1 . The single-chip microcomputer adopts PIC16C57 eight-bit single-chip microcomputer.

[0009] 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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Abstract

The invention relates to an earthquake precursor detection and alarm circuit with parameters settable. The earthquake precursor detection and alarm circuit comprises a thermocouple temperature sensor and is characterized in that the thermocouple temperature sensor is arranged in well water in the area where the earthquake occurs frequently and is connected with an A/D converter; while the A/D converter is connected with a set of slight contact keys and an SCM input terminal; an SCM output terminal is respectively connected with an LCD and the input terminal of a switch tube, and the output terminal of the switch tube is respectively connected with a buzzer and an LBD. The strengthened earthquake precursor detection and alarm circuit has the advantages that the abnormal change of the well water temperature can be deemed to be the precursor of the earthquake; before the severe earthquake occurs, the abnormal change of the well water temperature can be detected and the comparison of the detected current well water temperature with the last detected well water temperature by the thermocouple temperature sensor and stored in an SCM memory is carried out by SCM software, then the alarming signal of the abnormal change of the well water temperature is sent, which has comparatively high reference value for the forecast of the earthquake. Parameters such as the intervals of detection and update and the amplitude value of the abnormal change of the well water temperature can be set by the set of slight contact keys.

Description

technical field [0001] The invention relates to a detection and alarm circuit, in particular to an earthquake precursor detection and alarm circuit whose parameters can be set. Background technique [0002] The prior art earthquake alarm device relates to the alarm when a strong earthquake occurs. Most families can know the earthquake in an instant through the alarm signal and immediately take necessary protective measures to escape, actively avoid self-rescue, and avoid being passively smashed. But the prior art does not involve the detection and alarm of earthquake precursors. The so-called earthquake precursor in this case refers to the abnormal change of well water temperature before the earthquake. Contents of the invention [0003] The purpose of the present invention is to provide a parameter-settable earthquake precursor detection and alarm circuit. [0004] The technical scheme that the present invention solves its technical problem is: comprise thermocouple tem...

Claims

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Application Information

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IPC IPC(8): G08B21/10
Inventor 谭启仁
Owner 谭启仁
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