Displacement anti-theft alarm method

An anti-theft alarm and displacement technology, applied in the direction of anti-theft alarm, anti-theft alarm mechanical start, alarm, etc., can solve the problems of system micro-control error judgment, inaccurate alarm, alarm delay, etc., and achieve accurate and timely displacement alarm mechanism. Eliminate detection inaccuracy and improve timeliness

CN109345744AInactive Publication Date: 2019-02-15SICHUAN CHANGHONG ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-02-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a displacement anti-theft alarm method. In a normal situation, an interrupt detection method is used to monitor the displacement of a monitored item; when a displacement sensordetects the movement of the item, an interrupt signal is generated, a microcontroller receives the interrupt signal through an interrupt interface so as to start a pre-alarm process; after entering the pre-alarm process, a timed detection method is used to monitor the displacement of the monitored item; and if the fact that the item is still moving is determined through the timed detection method, an alarm process is started, and otherwise, the pre-alarm process is exited and an interrupt detection method is re-used to monitor the displacement of the monitored item. According to the displacement anti-theft alarm method, two detection methods adopted in the prior art are improved, so that the displacement alarm mechanisms are more accurate and timely.
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Description

technical field

[0001] The invention relates to the technical field, in particular to a displacement anti-theft alarm method. Background technique

[0002] With the continuous progress of society and the continuous development of science and technology, people's living standards have been greatly improved. Due to the continuous development of the economy, people's awareness of the protection of private property is constantly increasing, thus putting forward new requirements for anti-theft measures.

[0003] There are two detection methods used in traditional displacement detection alarms:

[0004] The first is the method of interrupt detection: that is, when the item moves, the displacement sensor in the item sends a high-level signal, and the interrupt pin of the system MCU (microcontroller) detects the signal sent by the sensor as an alarm.

[0005] The second is the method of timing detection: the system MCU (microcontroller) regularly inquires the state of the displace...

Examples

Embodiment

[0032] The implementation of the method in this embodiment will specifically use a microcontroller (MCU) and a displacement sensor (Displacementsensor), and will involve the concept of an interrupt (Interrupt). The specific explanations are as follows:

[0033] Microcontroller (MCU):

[0034] A single-chip microcomputer that integrates the main parts of a microcomputer on a single chip. The microcontroller was born in the mid-1970s. With the development of technology, its cost is getting lower and lower, and its performance is getting stronger and stronger, which makes its application everywhere and in various fields. Examples include motor control, barcode readers / scanners, consumer electronics, gaming equipment, telephones, HVAC, building security and access control, industrial control and automation, and white goods (washing machines, microwave ovens), etc.

[0035] Displacement sensor:

[0036] Displacement sensor, also known as linear sensor, is a linear device that bel...