CN206773946U

CN206773946U - A kind of wireless type geomagnetic parking stall detector based on NB IoT

Info

Publication number: CN206773946U
Application number: CN201720458488.1U
Authority: CN
Inventors: 何庆强; 王久渊
Original assignee: Sichuan Keyuan Core Technology Co Ltd
Current assignee: Sichuan Keyuan Core Technology Co Ltd
Priority date: 2017-04-27
Filing date: 2017-04-27
Publication date: 2017-12-19
Anticipated expiration: 2027-04-27

Abstract

The utility model belongs to Internet of Things application, parking lot management, technical field of intelligent traffic, particularly relates to a kind of wireless type geomagnetic parking stall detector based on NB IoT.The utility model includes geomagnetic sensor, processor and power supply, and the geomagnetic sensor passes through I²C interface is established with processor and communicated to connect；Characterized in that, also pass through I including NFC module and NB IoT wireless transport modules, the NFC module²C interface is established with processor and communicated to connect；The NB IoT wireless transport modules are established by UART interface and processor and communicated to connect；The power supply is used for the work power supply for geomagnetic sensor, processor, NFC module and NB IoT modules.The beneficial effects of the utility model are, directly by wagon detector information reporting to operator wireless network, no longer need aggregation gateway, reduce aggregation gateway deployment, installation is simple, supported without network technician, holistic cost (equipment cost, lower deployment cost, maintenance cost) declines 30% or so.

Description

A kind of wireless type geomagnetic parking stall detector based on NB-IoT

Technical field

The utility model belongs to Internet of Things application, parking lot management, technical field of intelligent traffic, particularly relates to one Wireless type geomagnetic parking stall detector of the kind based on NB-IoT.

Background technology

At present, as China's economy constantly increases, living standards of the people improve constantly, city automobile owning amount drastically on Rise, how efficient and rational to have managed curb parking, it becomes possible to effective stopping at release difficulty problem.

In general, open curb parking management mainly uses labor management method, it is completely dependent on people and does opening Formula curb parking management.But face following problem：1. toll administration is chaotic：Arbitrary imposition of fees, charging are forbidden, and charge dispute is more, charge Member practices fraud, and operation is more, and personation fee-collector claims for charge at random；2. operation management efficiency is low：Fee-collector's management region is limited, and difficult charge is to supervise Pipe, escaping arrearage can not recovery；3. operation management human cost is high；4. fee-collector's longevity of service, salary and conditions is low, and attraction is not Foot, flow of personnel are fast.

In order to change the status quo, based on technology of Internet of things, parking lot management technology has been achieved for the development advanced by leaps and bounds, and leads to Cross and wagon detector is installed on the ground of parking stall, vehicle occupied information is reported by operator wireless network using double bounce technology (wagon detector gives information reporting to wireless aggregation gateway by the short distance such as ZigBee communications, and wireless aggregation gateway is led to again 2G/3G/4G networks are crossed to report), intelligent management is then carried out by parking management platform, ultimately formed using sensor as section Point, the huge network based on network technology, database technology, middleware Technology, improve the operational efficiency of relevant industries. Car owner can be convenient to inquire about periphery roadside free time parking stall, self-service completion inquiry and payment by cell phone application；Proprietor can be by stopping Car management platform carries out stall system real-time management in real time, if it is desired, can also dock government's traffic administration, be easy to city parking Violation management.In whole managing system of car parking, data source of the parking space detector as parking lot management, occupy important Status, but used parking space detector still suffers from some following deficiency in the market：

First, radio communication typically uses unauthorized frequency range, such as：470MHz, 433MHz, etc., establish privately wireless LAN, electromagnetic signal there may be signal interference problem, and whole network stability security is poor, may cause parking space information It is inaccurate.

Second, wireless aggregation gateway limited coverage area, usual one wireless aggregation gateway can only manage dozens of parking stall, Under efficiency is relatively low, more parking stalls are controlled by way of increasing wireless repeater, but need extra increase equipment, together When, wireless aggregation gateway needs power supply unit, and equipment cost and lower deployment cost are higher.

3rd, distinct device producer uses privately owned wireless short-range communications, nothing between the product of distinct device producer Method is compatible, and product does not have universality.

Utility model content

The purpose of this utility model be in view of the shortcomings of the prior art part, using based on cellular arrowband Internet of Things (Narrow Band-Internet of Things, NB-IoT) technology, there is provided one kind has low cost, generalization, low-power consumption Wireless type geomagnetic parking stall detector.

The technical solution of the utility model is：A kind of as shown in figure 1, wireless type geomagnetic parking stall detection based on NB-IoT Device, including geomagnetic sensor, processor and power supply, the geomagnetic sensor pass through I²C interface is established with processor and communicated to connect； Characterized in that, also including NFC module and NB-IoT wireless transport modules, the NFC module passes through I²C interface is built with processor Vertical communication connection；The NB-IoT wireless transport modules are established by UART interface and processor and communicated to connect；The power supply is used In the work power supply for geomagnetic sensor, processor, NFC module and NB-IoT modules；

As shown in Fig. 2 the geomagnetic sensor is the axle magnetoresistive transducer HMC5883L of Honeywell three, for gathering space The magnetic field in 3 directions, the chip include 16 pin interfaces, wherein No. 1 pin and No. 16 pins are I²C interface, No. 1 pin connect Serial clock signal, No. 16 pins connect serial data signal, and No. 15 pins are data ready interrupt pin；

As shown in figure 3, the processor uses model STM8L151C8T6 single-chip microcomputer, the single-chip microcomputer draws including 48 Pin interface, using No. 37 pins and No. 38 pins as I²No. 37 pins of C interface, wherein single-chip microcomputer connect the axle magnetic of Honeywell three Sensor HMC5883L No. 16 pins are hindered, No. 38 pins of single-chip microcomputer connect the axle magnetoresistive transducer HMC5883L's of Honeywell three No. 1 pin；The axle magnetoresistive transducer HMC5883L of Honeywell three No. 15 pins, single-chip microcomputer are connect using No. 45 pins of single-chip microcomputer The axle magnetoresistive transducer HMC5883L of Honeywell three level of No. 15 is controlled by No. 45 pins, passes through I²C interface is read suddenly The magnetic field signal data that the axle magnetoresistive transducer HMC5883L of Ni Weier tri- are collected；It is fixed in memory inside the single-chip microcomputer There is the program module that vehicle judges, for judging to obtain storing cycle data according to the Magnetic Field data received；

As shown in figure 4, the NB-IoT wireless transport modules use SARA-N modules, the module connects including 64 pins Mouthful, wherein 10-13 pins are UART interface, and 41-44 pins are used in corresponding single-chip microcomputer as UART interface；Its In, No. 10 pins of SARA-N modules send data terminal for request, connect No. 44 pins of single-chip microcomputer；No. 11 of SARA-N modules Pin is clear to send data terminal, connects No. 43 pins of single-chip microcomputer；No. 12 pins of SARA-N modules send for serial data End, connect No. 42 pins of single-chip microcomputer；No. 13 pins of SARA-N modules are serial data receiving terminal, connect No. 41 of single-chip microcomputer Pin；No. 20 pins of the reseting port connection single-chip microcomputer of SARA-N modules；The wireless data of SARA-N modules sends enabled connect Mouth is pin 62, connects No. 21 pins of single-chip microcomputer；The wireless signal transmission interface of SARA-N modules is No. 56 pins；Single-chip microcomputer Obtained storing cycle data are sent to by SARA-N modules by UART interface, while SARA-N moulds are controlled by No. 21 pins The level of No. 62 pins of group, control SARA-N modules carry out wireless data transmission；

As shown in figure 5, the NFC module uses model M24SR16-YMN6172 chip, the chip draws including 8 Pin, wherein 5, No. 6 pins are I²C interface, No. 5 pins are serial data interface, connect No. 38 pins of single-chip microcomputer, No. 6 pins For serial clock interface, No. 37 pins of single-chip microcomputer are connected；No. 1 pin of M24SR16-YMN6172 chips is received for wireless signal Enable port is sent out, connects No. 36 pins of single-chip microcomputer；Single-chip microcomputer controls the 1 of M24SR16-YMN6172 chips by No. 36 pins The level of number pin, the data that control M24SR16-YMN6172 chips receive pass through I²C interface is transferred to single-chip microcomputer.

Scheme of the present utility model, primarily directed to the problem of radio communication is present in the prior art, by NB-IoT technologies It is incorporated into wireless type geomagnetic parking stall detector, the communication of existing geomagnetic parking stall detector is improved. In scheme of the present utility model, the axle magnetoresistive transducer HMC5883L of Honeywell three of use, the magnetic in 3 directions can be gathered , in single-chip microcomputer, vehicle parking is carried out according to the magnetic field collected to be judged as prior art, therefore the utility model is direct Corresponding program module has been used to be judged, not carrying out any applicability to the part changes.

After single-chip microcomputer obtains vehicle parking information, directly related data can be sent out by NB-IoT wireless transport modules Operator wireless network is sent to, it can be seen from Fig. 4, the wireless signal transmission interface of NB-IoT wireless transport modules draws for No. 56 Pin, its No. 56 pins are antenna input interface, and it uses wide variety of 3GPP telecommunication standard technologies in global range, therefore can Fundamentally to solve problems of the prior art.

Also proposed NFC module in scheme of the present utility model simultaneously because wireless type geomagnetic parking stall detector in itself The scope of application it is wider, use environment is again changeable, it is understood that there may be is frequently necessary to carry out associated adjustment or more new liter to itself Situations such as level, NFC module are a kind of modes for effectively solving the problem, its current application technology comparative maturity.

The beneficial effects of the utility model are：

(1) there is cost degradation：The utility model directly by wagon detector information reporting to operator wireless network, no Aggregation gateway is needed again, reduces aggregation gateway deployment, and installation is simple, is supported without network technician, holistic cost (equipment cost, lower deployment cost, maintenance cost) declines 30% or so.

(2) there is generalization：The utility model radio communication is using wide variety of 3GPP communication standards in global range Technology, focusing on low-power consumption and extensively cover Internet of Things, there is provided operator grade network guarantee, reliance security are greatly improved, after Continuous intelligent car position dilatation is simple, without considering Web-compatible sex chromosome mosaicism；There is superpower resistance to compression energy using integrated structure design Power and higher classification of waterproof, small volume is easy for installation, and parking lot will not be damaged, and is adapted to different application environment, can be wide It is general to be used for common road, elevated bridge, open parking ground.Realize that single geomagnetic parking stall detector function exists using NFC modes Line updates and upgrading, or realizes wide area by NB-IoT wireless transport module SARA-N series modules using operator wireless network The geomagnetic parking stall detector function online updating of net and upgrading, support is provided for the extension of follow-up function, can be quickly and easily Realize model change.

(3) there is low-power consumption：The present invention uses low-power scm and geomagnetic sensor, and wireless transport module is only by result Not timing reports operator wireless network, remaining time in a dormant state, NFC module work only in system online upgrading Make, between remaining timesharing big absolutely in a dormant state, therefore at utmost reduce system power dissipation, self-contained battery is once full of It is sustainable using as long as the several years after electricity.

Brief description of the drawings

Fig. 1 is logical construction schematic diagram of the present utility model；

Fig. 2 is the axle magnetoresistive transducer HMC5883L chip interfaces of Honeywell three and its peripheral circuit schematic diagram；

Fig. 3 is STM8L151C8T6 interface microcontrollers and its peripheral circuit schematic diagram；

Fig. 4 is SARA-N modules interface and its peripheral circuit schematic diagram；

Fig. 5 is M24SR16-YMN6172 chip interfaces and its peripheral circuit schematic diagram.

Embodiment

The technical solution of the utility model is had described in detail in utility model content part, it is necessary to which supplement is：

In wireless type geomagnetic parking stall detector described in the utility model in actual use, it is for parking lot Example, be only used in below parking stall install wireless type geomagnetic parking stall detector of the present utility model (an including magnetoresistive transducer, one Single-chip minimum system, a NB-IoT wireless transport module, a NFC module, and a power module), operator The situation of each parking stall is received by wireless network, whether vehicle, phase are such as parked come direct viewing parking stall by handheld device It is corresponding to provide corresponding APP for client's use, it can intuitively find that parking stall can be used, in use of the present utility model During need not additionally connect up, there is the advantages of easy to install, easy care, user or manager can monitor parking lot in real time Parking stall occupancy situation.

Claims

1. a kind of wireless type geomagnetic parking stall detector based on NB-IoT, including geomagnetic sensor, processor and power supply, describedly Magnetic Sensor passes through I²C interface is established with processor and communicated to connect；It is characterized in that, also wireless including NFC module and NB-IoT Transport module, the NFC module pass through I²C interface is established with processor and communicated to connect；The NB-IoT wireless transport modules lead to Cross UART interface and establish communication connection with processor；It is geomagnetic sensor, processor, NFC module and NB- that the power supply, which is used for, The work power supply of IoT modules；

The geomagnetic sensor is the axle magnetoresistive transducer HMC5883L of Honeywell three, for gathering the magnetic field in 3 directions in space, The chip of the axle magnetoresistive transducer HMC5883L of model Honeywell three includes 16 pin interfaces, wherein No. 1 pin and No. 16 pins are I²C interface, No. 1 pin connect serial clock signal, and No. 16 pins connect serial data signal, and No. 15 pins are data Prepare interrupt pin；

The processor uses model STM8L151C8T6 single-chip microcomputer, and the single-chip microcomputer includes 48 pin interfaces, using 37 Number pin and No. 38 pins are as I²No. 37 pins of C interface, wherein single-chip microcomputer connect the axle magnetoresistive transducer of Honeywell three HMC5883L No. 16 pins, No. 38 pins of single-chip microcomputer connect the axle magnetoresistive transducer HMC5883L of Honeywell three No. 1 pin； The axle magnetoresistive transducer HMC5883L of Honeywell three No. 15 pins are connect using No. 45 pins of single-chip microcomputer, single-chip microcomputer passes through No. 45 Pin controls the axle magnetoresistive transducer HMC5883L of Honeywell three level of No. 15, passes through I²C interface reads Honeywell three The magnetic field signal data that axle magnetoresistive transducer HMC5883L is collected；Vehicle is installed with memory inside the single-chip microcomputer to sentence Disconnected program module, for being judged to obtain storing cycle data according to the Magnetic Field data received；

The NB-IoT wireless transport modules use SARA-N modules, and the module includes 64 pin interfaces, and wherein No. 10-13 is drawn Pin is UART interface, using 41-44 pins as UART interface in corresponding single-chip microcomputer；Wherein, the 10 of SARA-N modules Number pin sends data terminal for request, connects No. 44 pins of single-chip microcomputer；No. 11 pins of SARA-N modules are clear to send number According to end, No. 43 pins of single-chip microcomputer are connected；No. 12 pins of SARA-N modules are serial data transmitting terminal, connect the 42 of single-chip microcomputer Number pin；No. 13 pins of SARA-N modules are serial data receiving terminal, connect No. 41 pins of single-chip microcomputer；SARA-N modules Reseting port connects No. 20 pins of single-chip microcomputer；It is pin 62 that the wireless data of SARA-N modules, which sends enabled interface, and connection is single No. 21 pins of piece machine；The wireless signal transmission interface of SARA-N modules is No. 56 pins；Single-chip microcomputer is incited somebody to action by UART interface To storing cycle data be sent to SARA-N modules, while pass through the electricity that No. 21 pins control SARA-N No. 62 pins of module Flat, control SARA-N modules carry out wireless data transmission；

The NFC module uses model M24SR16-YMN6172 chip, and the chip includes 8 pins, wherein 5, No. 6 are drawn Pin is I²C interface, No. 5 pins are serial data interface, connect No. 38 pins of single-chip microcomputer, and No. 6 pins are serial clock interface, Connect No. 37 pins of single-chip microcomputer；No. 1 pin of M24SR16-YMN6172 chips is that wireless signal receives and dispatches enable port, connection No. 36 pins of single-chip microcomputer；Single-chip microcomputer controls the level of No. 1 pin of M24SR16-YMN6172 chips, control by No. 36 pins The data that M24SR16-YMN6172 chips processed receive pass through I²C interface is transferred to single-chip microcomputer.