Ultrasonic parking space detector and parking space guiding system of parking lots
A parking space detector and ultrasonic technology are applied in the field of ultrasonic parking space detectors and parking space guidance systems in parking lots, which can solve the problems of not being able to know quickly, the number of manageable parking spaces is small, and the parking space information cannot be effectively communicated.
Active Publication Date: 2014-04-16
SHENZHEN JIESHUN SCI & TECH IND
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Problems solved by technology
The problem with the current parking space guidance system in the parking lot is that the number of parking spaces that the system can manage is small, and the parking space information between different parking lots cannot be effectively communicated.
When the car owner fails to find a suitable parking space in one parking lot, he cannot quickly learn the parking space information of other nearest parking lots
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[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with preferred specific embodiments.
[0026] This embodiment is a parking space guidance system in a parking lot, which consists of an information query management system, at least one central control device, and a plurality of management units; the central control device and the information query management system are connected through the Internet; A node controller connected to the device, and multiple parking space detectors connected to the node controller.
[0027] Such as figure 1 , figure 2 As shown, the information query management system is composed of a server, a parking space information query terminal, and a locator. The server is connected to the central control device of the management unit through the Internet to receive the parking space information transmitted by the central control device; the parking space information query termin...
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The invention discloses an ultrasonic parking space detector and a parking space guiding system of parking lots. The ultrasonic detector comprises a MCU (Microprogrammed Control Unit) processing circuit, an ultrasonic probe driving circuit, an ultrasonic probe, an ultrasonic detection circuit and a signal analysis circuit, wherein the analysis circuit comprises a signal amplification circuit, a reactance value of an alternating-current negative feedback capacitor in the amplification circuit reduces with reduction of temperature, so that an amplification factor of the amplification circuit can be automatically increased when temperature reduces, and temperature automatic-detection and compensation can be implemented. The parking space guiding system of the parking lots is provided with the parking space detector. In comparison with the prior art, the detector and the system provided by the invention have the following benefits of: improving accuracy of the detector in low temperature environment, and implementing information communication among different parking lots.
Description
technical field [0001] The invention relates to a traffic control system, in particular to an ultrasonic parking space detector and a parking space guidance system in a parking lot. Background technique [0002] At present, most of the detectors used in the market for detecting parking spaces in parking lots are composed of an ultrasonic transmitter and an ultrasonic receiver. There are many restrictions on frequency selection, filtering, and signal amplification. In actual use, the failure rate and error rate are high, and the parking space cannot be detected accurately, especially because the ultrasonic wave is a mechanical wave, which is a waveform generated by mechanical vibration. The amplitude of the mechanical vibration directly determines the strength of the ultrasonic wave, and the material The hardness of the ultrasonic wave determines its amplitude. The temperature has a great influence on the hardness of the material. Therefore, the temperature has a great influ...
Claims
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IPC IPC(8): G08G1/14G01S15/04
Inventor 唐健石木生
Owner SHENZHEN JIESHUN SCI & TECH IND