Multi-sensor low-power vehicle detection system and method based on adaptive environment
A vehicle detection and multi-sensor technology, applied in the field of multi-sensor low-power vehicle detection system based on adaptive environment, to achieve the effect of wireless data transmission, small size, and quick laying
Active Publication Date: 2020-06-19
NANJING UNIV OF SCI & TECH
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Problems solved by technology
[0006] The purpose of the present invention is to provide a vehicle detection system and method based on self-adaptive environment multi-sensor low power consumption, to solve the problems of existing roadside parking lot management and other problems
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Embodiment Construction
[0028] Combine Figure 1-Figure 4 , A low-power vehicle detection system based on adaptive environment multi-sensor, including several parking nodes, a convergence node and data monitoring terminal;
[0029] The parking space node is installed under each parking space, and each parking space node includes a first single-chip microcomputer, a first wireless communication module, a geomagnetic sensor and a power supply. The geomagnetic sensor is used to detect the size of the geomagnetic field of the parking space. Set the threshold, wake up the first single-chip computer in the dormant state, and send the parking space number and geomagnetic intensity value to the sink node through the first wireless communication module;
[0030] The convergence node includes a second single-chip microcomputer, a second wireless communication module, a GPRS communication module and a microwave radar detector 1;
[0031] During initialization, the second wireless communication module is used to recei...
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The invention relates to a multi-sensor low power consumption vehicle detection system and method based on an adaptive environment. A parking space node is installed in each parking space, when a vehicle enters or leaves the parking space, the geomagnetic field size of the parking space is changed obviously, a parking space node in a dormant state is woken, a parking space number and a parking space state are sent to a sink node, the sink node receives related data and read a Received Signal Strength Indication (RSSI) value, at the same time a microwave radar detector on the sink node of the area is started, the parking space which is calibrated in advance subjected to distance measurement again, and the state of the parking space at that time is determined when the vehicle enters or leaves. When the parking space information can not be detected by the RSSI value due to external factors such as a parking lot parking space environment or weather, a geomagnetic sensor is started as an auxiliary detection mode, and the reliability and accuracy of the method are improved.
Description
Technical field [0001] The invention relates to a vehicle detection technology for parking spaces in a parking lot, in particular to a low-power vehicle detection system and method based on an adaptive environment multi-sensor. Background technique [0002] With the rapid development and practical needs of the intelligent transportation industry, vehicle information collection has covered parking lots, streets and highways on a large scale. At present, the commonly used methods of collecting vehicle information in the world mainly include loop coils, video, and ultrasound. [0003] The toroidal coil has high precision and simple structure, but it cannot be widely used due to the need to cut roads for installation and maintenance. Its main working principle is designed according to the electromagnetic field coupling principle. When a certain frequency current passes through the toroidal coil, when a ferromagnetic vehicle passes through the toroidal coil, eddy currents are generated...
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IPC IPC(8): G08G1/14
CPCG08G1/147
Inventor 吴键李雄雄周建荣魏健何旭峰崔兴梅
Owner NANJING UNIV OF SCI & TECH