Ultra-low power consumption wireless geomagnetic type vehicle detector and control method thereof

Abstract

The invention discloses an ultra-low power consumption wireless geomagnetic type vehicle detector and a control method thereof. In order to prevent the unnecessary electric energy consumption during the conveying process and the storage process of the wireless geomagnetic type vehicle detector, a mercury switch is serially connected between a battery and a circuit board, and when the wireless geomagnetic type vehicle detector is not in use, the wireless geomagnetic type vehicle detector can be arranged in an inverted manner, and therefore the power off can be realized, and the zero power consumption effect can be realized. An LDO-0 circuit is additionally provided, and power supply voltage of a wireless communication module, power supply voltage of a MCU processing unit, and power supply voltage of a magnetic acquisition module are reduced, and then the working current of the whole wireless geomagnetic type vehicle detector can be reduced. During the working of the wireless geomagnetic type vehicle detector, only the MCU processing unit and the wireless communication module are required to work continuously, and the magnetic acquisition module is not required to work constantly, and therefore the LDO-0 circuit is additionally provided, and then the MCU processing unit is used to control the interruptible power supply of the magnetic acquisition module, and the power can be supplied before the magnetic field acquisition, and the power can be cut off after the completion of the magnetic field acquisition.

Description

technical field [0001] The invention relates to the field of low power consumption design of a wireless sensor network, in particular to an ultra-low power consumption wireless geomagnetic vehicle detector and a control method thereof. Background technique [0002] Wireless sensor network is one of the new technologies that will bring about major changes to human life, and can be widely used in military, medical, environmental monitoring, smart cities, and smart home fields. [0003] The emerging wireless geomagnetic vehicle detection system is one of the typical applications of wireless sensor network technology, which overcomes the problem of complex wiring and difficult construction of traditional ground induction coil vehicle detectors. However, due to the use of primary lithium batteries for power supply, the service life has become one of the key constraints. [0004] The current known wireless geomagnetic vehicle detector composition block diagram is as follows: fig...

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Problems solved by technology

[0005] Adopting method 1 will make the vehicle detector bulky, inconvenient to install and maintain, cause serious damage to the road surface, and is not convenient for large-scale promotion and use; adopting method 2 will reduce the power at the expense of wireless communication distance and quality. For the purpose of energy consumption, the installation requires high orientation and angle, and more signal repeaters need to be installed. This method increases the difficulty and cost of installation and debugging, and it is often difficult to find a suitable place to install the signal in the actual use process. repeater

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