Method for improving accuracy of geomagnetic parking stall detector
A parking space detector and accuracy technology, which is applied in the field of improving the accuracy of geomagnetic parking space detectors, to achieve the effects of improving practicability and reliability, improving accuracy, and detecting accurately
Inactive Publication Date: 2012-01-18
东莞市帕马智能停车服务有限公司
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Problems solved by technology
[0007] The purpose of the present invention is to overcome the deficiencies of the prior art, to propose a method for improving the accuracy of the geomagnetic parking space detector, to solve the problem of misdetection caused by the geomagnetic sensor being affected by the temperature difference in the environment, the unidirectional geomagnetic reading and the reading oscillation, and improving the accuracy of the geomagnetic parking space detector. Accuracy of parking space detection
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[0027] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0028] A method for improving the accuracy of a geomagnetic parking space detector is as follows: figure 2 Realized on the geomagnetic parking space detector shown. The geomagnetic parking space detector includes a central processing unit module, a power management module, a geomagnetic sensor, a temperature sensor and a wireless communication module. The module is connected with the central processor module, geomagnetic sensor, temperature sensor and wireless communication module and provides power for each module. The central processor module is equipped with geomagnetic parking space detection software. The geomagnetic sensor is used to collect the data of the geomagnetic sensor. The temperature sensor And the wireless communication module is used to collect the data of the temperature sensor and can communicate with other parking space de...
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The invention relates to a method for improving the accuracy of a geomagnetic parking stall detector, which comprises the following steps: (1) acquiring a temperature characteristic curve of a geomagnetic sensor; (2) recording an initialized temperature value and data of the geomagnetic sensor when initializing the geomagnetic parking stall detector; (3) reading data of a current temperature sensor and the geomagnetic parking stall detector in real time; (4) judging whether the ambient temperature difference of a current temperature value and the initialized temperature value exceeds a temperature threshold or not and executing the step (6) if the ambient temperature does not exceed the temperature threshold; (5) carrying out temperature compensation on the data of the current geomagneticsensor according to the temperature characteristic curve to obtain data of the geomagnetic sensor subjected to the temperature compensation; and (6) judging whether vehicles exist or not according tothe data of the geomagnetic sensor. The invention solves the problem that mistaken detection on the geomagnetic sensor caused by the environment influence, unidirectional read of the geomagnetic sensor and read shake, improves the accuracy of the geomagnetic parking stall detection as well as the practicability and the reliability of the geomagnetic parking stall detector in an environment with larger temperature change.
Description
technical field [0001] The invention belongs to the field of parking space detectors, in particular to a method for improving the accuracy of geomagnetic parking space detectors. Background technique [0002] The use of geomagnetic sensors for parking space detection is a new method of parking space detection in recent years, which is more and more popular among parking equipment suppliers and parking lot operators. Geomagnetic sensors mainly use the influence of vehicles on the earth's magnetic field to complete vehicle detection. Compared with traditional geomagnetic induction coils, ultrasonic parking space detectors, video parking space detectors, etc. There are advantages in many aspects, and it has become a very important vehicle detection device. However, the existing geomagnetic parking space detectors still have some false detections in practical applications, which are mainly caused by the following factors: [0003] (1) The geomagnetic sensor itself is greatly a...
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IPC IPC(8): G08G1/123G08G1/042G08G1/048
Inventor 刘征
Owner 东莞市帕马智能停车服务有限公司