CN214312071U

CN214312071U - Intelligent geomagnetic detector

Info

Publication number: CN214312071U
Application number: CN202023295854.7U
Authority: CN
Inventors: 许改英; 倪伟; 闫培峰; 张振宇; 张立; 晋美娟
Original assignee: Shanxi Pingyang Industry Machinery Co Ltd
Current assignee: Shanxi Pingyang Industry Machinery Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-09-28
Anticipated expiration: 2030-12-30

Abstract

The utility model relates to a parking stall detection technology field specifically is an intelligence earth magnetism detector, aims at solving current earth magnetism detector and detects the technical problem that easily receives environmental disturbance, rate of accuracy low. The following technical scheme is adopted: the vehicle monitoring system comprises a power supply, a vehicle detection part, a data processing part and a data wireless transmission part; the vehicle detection part comprises a sensor control circuit and three axial sensors, the three axial sensors are respectively used for detecting X, Y, Z-directional geomagnetic signals, and the sensor control circuit is connected with the three axial sensors; the data processing part comprises a central processing unit which is connected with the sensor control circuit; the data wireless transmission part comprises an Internet of things communication circuit, a wireless network circuit and an SIM card circuit, the Internet of things communication circuit is connected with the wireless network circuit and the SIM card circuit, and the Internet of things communication circuit is connected with the central processing unit.

Description

Intelligent geomagnetic detector

Technical Field

The utility model relates to a parking stall detection technology field specifically is an intelligence earth magnetism detector.

Background

Along with the rapid development of scientific technology, the wisdom parking charging industry has gradually emerged, and present roadside parking management mainly contains personnel in the aspect of vehicle detection technique and patrols and examines, video vehicle detection, earth magnetism vehicle detection technique etc.. The detection technology has advantages and disadvantages according to personnel investment, use environment and self limitation, wherein the geomagnetic and video technology is the leading direction of future development. The earth magnetism that goes on the roadside vehicle in the existing market detects and has very big discrepancy with the parking of actual vehicle to because site environment can produce the factor of interference to the earth magnetism, the earth magnetism detects the rate of accuracy also lower. Therefore, an intelligent geomagnetic detector is urgently needed to solve the problems of being easily interfered by external environment, low in detection accuracy and the like, and is suitable for a parking space monitoring and management system.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving current earth magnetism detector and detect easily receive environmental disturbance, the technical problem that the rate of accuracy is low.

The utility model provides a technical scheme that its technical problem adopted is:

an intelligent geomagnetic detector comprises a power supply, a vehicle detection part, a data processing part and a data wireless transmission part, wherein the vehicle detection part comprises a sensor control circuit and three axial sensors, the three axial sensors are respectively used for detecting geomagnetic signals in the direction of X, Y, Z, and the sensor control circuit is connected with the three axial sensors; the data processing part comprises a central processing unit which is connected with the sensor control circuit; the data wireless transmission part comprises an Internet of things communication circuit, a wireless network circuit and an SIM card circuit, the Internet of things communication circuit is connected with the wireless network circuit and the SIM card circuit, and the Internet of things communication circuit is connected with the central processing unit.

Further, the vehicle detection part adopts an RM3100 sensor suite, and the RM3100 sensor suite is composed of two X/Y-axis magnetic sensors Sen-XY-f, 1Z-axis magnetic sensor Sen-Z-f and 1 ASIC controller MagI²C, the composition is shown.

Furthermore, the central processing unit adopts an MSP430 singlechip.

Further, an N256 module is adopted in the Internet of things communication circuit.

Furthermore, the power supply is formed by connecting a lithium thionyl chloride battery and a lithium ion super capacitor in parallel.

The utility model has the advantages that:

the utility model provides an intelligent geomagnetic detector, which adopts an X/Y/Z triaxial sensor for detection and adopts the Internet of things for communication, thus reducing the interference of the external environment and improving the accuracy of vehicle detection; meanwhile, the parking space monitoring system has the advantages that the parking space occupation or idle state information is acquired in real time, and the information is transmitted to the management system through the wireless data network, so that the geomagnetic monitoring and centralized management of the parking space vehicles are realized, and the problem of investment in parking space manual supervision is solved to a great extent.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Referring to fig. 1, an intelligent geomagnetic detector includes a power supply,The vehicle detection part, the data processing part and the data wireless transmission part; the power supply is formed by connecting a lithium thionyl chloride battery and a lithium ion super capacitor in parallel, the lithium thionyl chloride battery ensures that the working voltage can keep obvious stability in the whole service life, the lithium ion super capacitor greatly improves the energy density of the super capacitor, and simultaneously the characteristics of high power and high cyclicity of the traditional super capacitor are kept, and the lithium thionyl chloride battery and the super capacitor are combined in parallel, so that the low-current long-time power supply of the sensor can be met, and the instant high-power discharge of power supply end voltage drop caused by the fact that the peak current of the module of the Internet of things communication circuit N256 module reaches 1A under the maximum transmitting power level can be met; the vehicle detection part comprises a sensor control circuit and three axial sensors, the sensor control circuit is connected with the three axial sensors, an RM3100 sensor suite is specifically adopted, and the RM3100 sensor suite is composed of two X/Y-axis magnetic sensors Sen-XY-f, 1Z-axis magnetic sensor Sen-Z-f and 1 ASIC controller MagI²The PIN sensor based on the magnetic induction technology has high resolution and repeated data output under ultralow noise, high sampling rate, no hysteresis phenomenon and no need of temperature calibration; the data processing part comprises a central processing unit which is connected with the sensor control circuit, the central processing unit adopts an MSP430 singlechip and has a strong interrupt function, each I/O port corresponds to a plurality of registers of input, output, function selection, interrupt and the like respectively, so that the function ports and the general I/O ports are multiplexed, and the functions to be realized are selected firstly before the same I/O port is operated, thereby greatly enhancing the functions and flexibility of the ports, and conveniently realizing the data communication with the communication circuit and the detection circuit respectively through a chip serial communication interface; the data wireless transmission part comprises an Internet of things communication circuit, a wireless network circuit and an SIM card circuit, the Internet of things communication circuit is connected with the wireless network circuit and the SIM card circuit, the Internet of things communication circuit is connected with the central processing unit, the Internet of things communication circuit adopts an N256 module, the N256 is a multifunctional wireless module based on an MT2625 platform, the design of various terminal wireless products can be more convenient and rapid on the basis of the module, the module defaults to support all-round standard wireless products of the same pathThe function serial port can send AT commands and data through the serial port, and can conveniently set the module into a PSM minimum current mode through the AT commands, the module is an SMT packaged module, the small size of the appearance is only 17.6 mm multiplied by 15.7 mm multiplied by 2.3mm, the requirement of a user on the space size in application can be met, and the function serial port is particularly suitable for the design of various miniaturized products. Specifically, the central processing unit can complete network connection, read information of the SIM card, establish TCP connection and perform remote data transmission to send and receive information and the like by writing different AT commands into the communication circuit of the Internet of things.

The following is a detailed description of the operation process of the intelligent geomagnetic detector:

when the power supply works, the power supply supplies power to the sensor control circuit and the Internet of things communication circuit, the central processing unit supplies power to the XC6206P302 chip with low power, and the chip provides the power supply voltage-stabilizing output to the central processing unit.

When the sensor is used, the current environmental magnetic field is initialized, namely the central processing unit reads the triaxial data of the three axial sensors through the sensor control circuit in the environment without any vehicles and magnetic fields around during installation, and calculates and records the reference value of the background magnetic field as the reference standard; the method comprises the steps that background magnetic field data changes caused when an iron-containing vehicle enters are used for detecting the vehicle, and the central processing unit carries out timing interval detection on magnetic field changes around the geomagnetism on three axial directions of a sensor X axis, a sensor Y axis and a sensor Z axis through setting sampling intervals of the sensor RM 3100; then, the central processing unit carries out special operation on the collected data to judge whether the berth is occupied by the vehicle, and immediately sends the change of the berth occupation and idle information to a berth monitoring management system through a communication module N256 in a wireless way, so as to realize the detection and management of the vehicle.

Typically, during the interval, the internet of things communication circuit operates in a PSM minimum current mode. The central processing unit works in a low power consumption mode, the serial port of the central processing unit uses an interrupt signal, and the local magnetic sensor triggers the serial port of the central processing unit to wake up the local magnetic sensor when the local magnetic sensor has magnetic field data detected at regular time; the central processing unit processes and judges the detection data read by the sensor control circuit, and if the data needing wireless transmission exist, the central processing unit enables the communication circuit of the Internet of things to exit from a minimum current mode and establish TCP connection, and the berth state information or battery power information and the required parameter information are transmitted through the wireless module.

The utility model discloses an intelligence earth magnetism detector is by the battery power supply from the area, buries in the earth's surface during use, and the consumption is lower, and the reason lies in: 1) the vehicle detection part adopts an RM3100 sensor suite, and 70 microamperes are detected during cyclic vehicle detection; 2) the central processing unit adopts an MSP430 singlechip, and the current of the chip is 5 microamperes when the chip is in dormancy under the condition of meeting the requirement of completing the geomagnetic detection function; 3) the communication circuit of the Internet of things adopts an N256 module, the communication circuit is set to be in a PSM minimum current mode in an idle state, the current consumption can reach 4uA in the PSM mode, the power consumption is greatly reduced, the use of the electric quantity of a power supply is reduced, and the maintenance rate of a battery is prolonged. In addition, the communication circuit of the Internet of things adopts the N256 module, the wireless transmission of data is stable and reliable, the real-time performance is strong, the interference of the external environment to signals is avoided, and the wireless communication capability is greatly improved.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides an intelligence earth magnetism detector, includes power, vehicle detection part, data processing part and data wireless transmission part, its characterized in that: the vehicle detection part comprises a sensor control circuit and three axial sensors, the three axial sensors are respectively used for detecting X, Y, Z-directional geomagnetic signals, and the sensor control circuit is connected with the three axial sensors; the data processing part comprises a central processing unit which is connected with the sensor control circuit; the data wireless transmission part comprises an Internet of things communication circuit, a wireless network circuit and an SIM card circuit, the Internet of things communication circuit is connected with the wireless network circuit and the SIM card circuit, and the Internet of things communication circuit is connected with the central processing unit.

2. The method of claim 1An intelligent geomagnetic detector, characterized in that: the vehicle detection part adopts an RM3100 sensor suite, and the RM3100 sensor suite is composed of two X/Y-axis magnetic sensors Sen-XY-f, 1Z-axis magnetic sensor Sen-Z-f and 1 ASIC controller MagI²C, the composition is shown.

3. An intelligent geomagnetic detector according to claim 2, wherein: the central processing unit adopts an MSP430 singlechip.

4. An intelligent geomagnetic detector according to claim 3, wherein: the communication circuit of the Internet of things adopts an N256 module.

5. An intelligent geomagnetic detector according to any one of claims 1 to 4, wherein: the power supply is formed by connecting a lithium thionyl chloride battery and a lithium ion super capacitor in parallel.