Alarm device based on safe distance recognition
An alarm device and safety distance technology, applied in the field of alarm, can solve the problems of complex system, short distance of anti-lost device, limited application range, etc., and achieve the effect of good flexibility, simple structure and strong versatility
Inactive Publication Date: 2013-09-18
FUJIAN NORMAL UNIV
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The aircraft model anti-lost device with patent No. ZL201120514707.6 includes STM32 processor, GPS module, GSM module and barometric altitude module. The system is complex and suitable for special fields.
The patent application No. CN201210301006.3 applies for a mutually locating anti-lost device, which uses CSS real-time positioning method to solve the problem that the previous anti-lost device has a short distance and cannot determine the direction. Accurate positioning of the relative position between transmitters, but requires the support of the base station, the application range is limited and the cost is high
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[0016] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0017] figure 1 Among them, 101 is the microprocessor A; 102 is the wireless transceiver; 103 is the keyboard; 104 is the indicator light; 105 is the sound and light alarm circuit. The wireless transceiver (102), the keyboard (103), the indicator light (104) and the sound and light alarm circuit (105) are respectively connected with the microprocessor (101).
[0018] right figure 2 The workflow of the system is described as follows:
[0019] Step 201: power on, and initialize the I / O ports, registers, timers T1 and T2 of the processor, and the output power of the wireless transceiver.
[0020] Step 202: Respond to the safety distance adjustment button in an interrupted manner, and modify the corresponding output power of the wireless transceiver according to the set safety distance.
[0021] Step 203: The radio frequency module of the wir...
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The invention relates to an alarm device based on safe distance recognition. The alarm device is composed of a microprocessor, a wireless transceiver, a keyboard, an indicator light and a sound-light alarm circuit, wherein the wireless transceiver, the keyboard, the indicator light and the sound-light alarm circuit are connected with the microprocessor respectively. Communication between the alarm devices is performed, the safe distance is variable, connection is built in a request-response mode, when the distance between the alarm devices is within the safe distance range, the detection-loopback process is continuously repeated, and when the distance between the alarm devices exceeds the safe distance, the alarm devices start the sound-light alarm circuits. The alarm device is simple in structure, good in flexibility, high in universality and capable of being used in any needed occasion and preventing children, pets, valuables and the like from being lost and stolen.
Description
technical field [0001] The invention relates to an alarm field, in particular to an alarm device based on safe distance identification. Background technique [0002] At present, there are various alarm devices with functions such as anti-lost, search, and warning on the market, and there are many solutions for them, such as the pet anti-lost device whose application number is CN201010548238.X, the sensor exists alone on the owner , when the pet is about 50 meters away from the owner with the anti-lost device, the sensor in the owner's hand will automatically send out a warning sound, but the sensing distance cannot be adjusted. The aircraft model anti-lost device with patent No. ZL201120514707.6 includes STM32 processor, GPS module, GSM module and barometric altitude module. The system is complex and suitable for special fields. The patent application No. CN201210301006.3 applies for a mutually locating anti-lost device, which uses CSS real-time positioning method to solve ...
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IPC IPC(8): G08B21/24
Inventor 施文灶王平黄晞
Owner FUJIAN NORMAL UNIV