CN111311924A - A system and method for monitoring traffic flow based on pressure sensing - Google Patents

Abstract

The invention relates to a pressure sensing-based vehicle flow monitoring system and method, comprising a cloud platform data management system, a lithium battery module and an intelligent manhole cover module arranged on the manhole cover; the lithium battery module is connected with the intelligent manhole cover module and is an intelligent manhole cover The module provides electrical energy; the smart manhole cover module is used for receiving and processing the vehicle traffic flow data RX passing through the manhole cover, and the cloud platform data management system is used for recording the traffic flow data RX. The present invention is applied to the municipal manhole cover system all over the city roads. By detecting the traffic flow online and analyzing the data in real time, a three-dimensional network of traffic big data is constructed from points to lines and lines to planes, which provides big data support for effectively alleviating the problem of urban traffic congestion. .

Description

A system and method for monitoring traffic flow based on pressure sensing

technical field

The present invention relates to the technical field of electronic information, and more particularly, to a system and method for monitoring traffic flow based on pressure perception.

Background technique

With the continuous development of the city, the number of cars has increased year by year, and the urban traffic pressure has increased. In recent years, smart transportation has found many solutions to solve the problem of urban congestion. However, due to the relatively single data source and high cost of smart transportation, it is impossible to effectively guide and clear vehicles, especially during peak traffic hours, which will still cause local roads. of congestion.

SUMMARY OF THE INVENTION

(1) Technical problems to be solved

In order to solve the problems existing in the prior art, the present invention provides a system and method for monitoring traffic flow based on pressure sensing.

(2) Technical solutions

In order to achieve the above-mentioned purpose, the main technical scheme adopted in the present invention includes:

Design a traffic flow monitoring system based on pressure perception, including a cloud platform data management system, a lithium battery module and an intelligent manhole cover module arranged on the manhole cover; the lithium battery module is connected with the intelligent manhole cover module and provides electrical energy for the intelligent manhole cover module; The intelligent manhole cover module is used to receive and process the vehicle traffic flow data RX passing through the manhole cover, and the cloud platform data management system is used to record the traffic flow data RX.

In the above solution, the smart manhole cover module includes a smart manhole cover circuit control module, a wireless communication module, a smart manhole cover IoT communication module, a pressure sensor module and an ultrasonic sensor module, wherein the smart manhole cover circuit control module and the wireless communication module are respectively , Intelligent manhole cover IoT communication module, pressure sensor module, ultrasonic sensor module connection.

In the above solution, the cloud platform data management system is provided with a daily data recording module.

In the above solution, the intelligent manhole cover circuit control module selects the STM32F103C8T6 integrated control chip.

In the above solution, the intelligent manhole cover IoT communication module selects the BC95-B8 IoT communication chip.

In the above solution, the pressure sensor module is composed of a HX711AD conversion chip and a plurality of pressure sensors, the signal output ends of the plurality of pressure sensors are connected to the signal input end of the HX711AD conversion chip, and the signal output end of the HX711AD conversion chip is connected. Connect with the intelligent manhole cover circuit control module.

The present invention also provides a traffic flow monitoring method using the above-mentioned traffic flow monitoring system. The method includes the following steps: in a state where the manhole cover is closed, when the vehicle is pressed over the manhole cover, the pressure sensor module generates a signal P, and the ultrasonic sensor module generates a signal P. Signal U, the intelligent manhole cover circuit control module receives the signal P generated by the pressure sensor module, the signal U generated by the ultrasonic sensor module and the communication control signal T of the wireless communication module and processes it to obtain the traffic flow data RX, and then the traffic flow data is obtained. RX is sent to the smart manhole cover IoT communication module, the smart manhole cover IoT communication module receives the traffic flow data RX and packages the data, and sends the packaged traffic flow data RX to the cloud platform data management through the radio frequency antenna system.

Preferably, the pressure sensor module generates a signal P and converts and parses the signal P to obtain pressure data, the ultrasonic sensor module receives the echo and generates a signal U, if the pressure data is less than a preset threshold, the pressure sensor module does not Feedback the pressure data to the smart manhole cover IoT communication module, and the ultrasonic sensor module does not feed back the signal U to the smart manhole cover IoT communication module. If the pressure data is greater than or equal to a preset threshold, the pressure sensor module will feed back the pressure data to the smart manhole cover IoT communication module. The manhole cover IoT communication module and the ultrasonic sensor module feed back the signal U to the smart manhole cover IoT communication module.

(3) Beneficial effects

The present invention is applied to the municipal manhole cover system all over the city roads. By detecting the traffic flow online and analyzing the data in real time, the three-dimensional network of traffic big data is constructed from points to lines and lines to planes, so as to provide big data support for effectively alleviating the problem of urban traffic congestion. .

Description of drawings

1 is a schematic block diagram of a pressure sensing-based traffic flow monitoring system provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of a pressure sensor module provided by an embodiment of the present invention.

Detailed ways

In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below with reference to the accompanying drawings and through specific embodiments.

As shown in FIG. 1 , the present invention provides a pressure sensing-based traffic flow monitoring system, which is an intelligent manhole cover system, including a cloud platform data management system, a lithium battery module, and an intelligent manhole cover module disposed on the manhole cover; the lithium The battery module is connected to the smart manhole cover module and provides power for the smart manhole cover module; the smart manhole cover module includes a smart manhole cover circuit control module, a wireless communication module, a smart manhole cover IoT communication module, a pressure sensor module and an ultrasonic sensor module, wherein the The intelligent manhole cover circuit control module is respectively connected with the wireless communication module, the intelligent manhole cover IoT communication module, the pressure sensor module and the ultrasonic sensor module; the cloud platform data management system is provided with a daily data recording module.

In the embodiment of the present invention, the intelligent manhole cover circuit control module selects STM32F103C8T6 integrated control chip; the intelligent manhole cover IoT communication module selects the BC95-B8 IoT communication chip; as shown in FIG. 2 , the pressure sensor module is composed of HX711AD It consists of a conversion chip and a plurality of pressure sensors, the signal output ends of the plurality of pressure sensors are connected to the signal input end of the HX711AD conversion chip, and the signal output end of the HX711AD conversion chip is connected to the STM32F103C8T6 integrated control chip. When the vehicle presses over the manhole cover, the pressure sensor module generates a signal P, and the ultrasonic sensor module generates a signal U. The STM32F103C8T6 integrated control chip receives the signal P generated by the pressure sensor module, the signal U generated by the ultrasonic sensor module, and the signal U generated by the wireless communication module. The communication control signal T is processed and the traffic flow data RX is obtained, and then the traffic flow data RX is sent to the BC95-B8 IoT communication chip. The BC95-B8 IoT chip receives the traffic flow data RX and packs the data, and the packaged The traffic flow data RX is sent to the cloud platform data management system through the radio frequency antenna.

The present invention also provides a traffic flow monitoring method using the above-mentioned intelligent manhole cover system, the method includes the following steps: when a vehicle is pressed over the manhole cover when the manhole cover is closed, the pressure sensor detects the pressure and generates a signal P, the signal P The pressure data is converted and analyzed by the HX711AD conversion chip. The ultrasonic sensor module receives the echo and generates a signal U. If the pressure data is less than the preset threshold, the HX711AD conversion chip does not feed back the pressure data to the STM32F103C8T6 integrated control chip, and the ultrasonic sensor module does not Feedback the signal U to the STM32F103C8T6 integrated control chip. If the pressure data is greater than or equal to the preset threshold, the HX711AD conversion chip feeds back the pressure data to the STM32F103C8T6 integrated control chip, and the ultrasonic sensor module feeds back the signal U to the STM32F103C8T6 integrated control chip, and the STM32F103C8T6 integrated control chip The chip obtains the traffic flow RX through calculation, and the traffic flow data RX is sent to the cloud platform data management system through the BC95-B8 IoT chip.

The accompanying drawings describe the embodiments of the present invention, but the present invention is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only schematic, not restrictive, and those of ordinary skill in the art are familiar with the present invention. Under the inspiration of the present invention, many forms can be made without departing from the scope of the present invention and the protection scope of the claims, which all belong to the protection of the present invention.

Claims (8)

1. A traffic flow monitoring system based on pressure perception, characterized in that it comprises a cloud platform data management system, a lithium battery module and an intelligent manhole cover module arranged on the manhole cover; the lithium battery module is connected to the intelligent manhole cover module and is an intelligent manhole cover module. The manhole cover module provides electric power; the intelligent manhole cover module is used for receiving and processing the vehicle traffic flow data RX passing through the manhole cover, and the cloud platform data management system is used for recording the traffic flow data RX. 2. A pressure sensing-based traffic flow monitoring system according to claim 1, wherein the intelligent manhole cover module comprises an intelligent manhole cover circuit control module, a wireless communication module, an intelligent manhole cover Internet of Things communication module, and a pressure sensor module and an ultrasonic sensor module, wherein the intelligent manhole cover circuit control module is respectively connected with a wireless communication module, an intelligent manhole cover IoT communication module, a pressure sensor module and an ultrasonic sensor module. 3 . The pressure sensing-based traffic flow monitoring system according to claim 1 , wherein a daily data recording module is provided in the cloud platform data management system. 4 . 4 . The pressure sensing-based traffic flow monitoring system according to claim 1 , wherein the intelligent manhole cover circuit control module selects STM32F103C8T6 integrated control chip. 5 . 5 . The pressure sensing-based vehicle flow monitoring system according to claim 1 , wherein the intelligent manhole cover IoT communication module selects BC95-B8 IoT communication chip. 6 . 6 . The pressure sensing-based traffic flow monitoring system according to claim 1 , wherein the pressure sensor module is composed of a HX711AD conversion chip and a plurality of pressure sensors, and the signal output ends of the plurality of pressure sensors are 6 . It is connected with the signal input end of the HX711AD conversion chip, and the signal output end of the HX711AD conversion chip is connected with the intelligent manhole cover circuit control module. 7. A traffic flow monitoring method using the traffic flow monitoring system of claim 2, characterized in that the method comprises the steps of: in a state where the manhole cover is closed, the pressure sensor module generates a signal when the vehicle is pressed over the manhole cover P. The ultrasonic sensor module generates the signal U, and the intelligent manhole cover circuit control module receives the signal P generated by the pressure sensor module, the signal U generated by the ultrasonic sensor module and the communication control signal T of the wireless communication module, and processes them to obtain the traffic flow data RX. , and then send the traffic flow data RX to the smart manhole cover IoT communication module, the smart manhole cover IoT communication module receives the traffic flow data RX and packs the data, and sends the packaged traffic flow data RX to the radio frequency antenna. The cloud platform data management system. 8 . The method for monitoring traffic flow according to claim 7 , wherein the pressure sensor module generates a signal P and converts and analyzes the signal P to obtain pressure data, and the ultrasonic sensor module receives the echo and generates the signal 8 . U, if the pressure data is less than the preset threshold, the pressure sensor module does not feed back the pressure data to the smart manhole cover IoT communication module, and the ultrasonic sensor module does not feed back the signal U to the smart manhole cover IoT communication module, if the pressure data is greater than or equal to the preset threshold, the pressure sensor module feeds back the pressure data to the smart manhole cover IoT communication module, and the ultrasonic sensor module feeds back the signal U to the smart manhole cover IoT communication module.

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