CN209044686U - A kind of bus positioning and ticket-checking system based on NB-IoT - Google Patents

Abstract

The utility model discloses an NB-IoT-based intelligent bus positioning and ticket checking system, comprising: a positioning module, an NB-IoT communication module, a CPU main control module, a ticket checking module, a PSAM encryption and decryption module, a storage module, and an LCD display module , a voice broadcast module and a power supply module, the positioning module, the NB-IoT communication module, the ticket checking module, the PSAM encryption and decryption module, the storage module, the LCD display module, and the voice broadcast module are all connected with the CPU main control module; the utility model Using NB‑IoT technology for communication can make the communication distance of the intelligent bus system longer, allow more vehicles to connect to the system, and obtain a larger amount of information; NB‑IoT’s high gain and deep coverage capabilities can make up for The shortcomings of the original wireless communication network can effectively feed back the current vehicle's position and status information in real time, and simultaneously synchronize various bill information in a more timely manner, thereby facilitating accurate, effective and timely communication between the bus back-end management and the bus front-end. docking.

Description

A bus positioning and ticket checking system based on NB-IoT

technical field

The utility model relates to the technical field of public transportation and communication, in particular to a bus positioning and ticket checking system based on NB-IoT.

Background technique

The cellular-based Narrow Band Internet of Thing (NB-IoT) has become an important branch of the Internet of Everything; NB-IoT is built on a cellular network and only occupies a bandwidth of about 180KHz, and can be directly deployed in GSM networks, UMTS network or LTE network to reduce deployment costs and achieve smooth upgrades; NB-IoT has four major characteristics: First, wide coverage, which will provide improved indoor coverage. In the same frequency band, NB-IoT has higher gain than existing networks. 20dB, which is equivalent to increasing the coverage area by 100 times; the second is the ability to support massive connections. One NB-IoT sector can support 100,000 connections, supporting low latency sensitivity, ultra-low equipment cost, and low equipment. Power consumption and optimized network architecture; the third is lower power consumption, and the standby time of the NB-IoT terminal module can be as long as 10 years; the fourth is lower module cost, and the enterprise expects a single connected module to not exceed $5.

The existing bus positioning and ticket checking systems are basically based on GSM, 3G and LTE communication connection methods. Because the bus network covers a very wide area, and most buses are in a mobile state during operation, in areas with poor network signal coverage. The segment is prone to increased transmission delay or even transmission failure, resulting in the inability of the bus management department to obtain timely bus positioning information and operation conditions, which brings inconvenience to management.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides a bus positioning and ticket checking system based on NB-IoT, so as to solve the problem of the delay of communication information transmission caused by the current bus management and positioning system due to the wide operating lines and the particularity of being in a moving state. At the same time, it has the function of ticket checking, which is convenient for the bus management department to accurately monitor and grasp the running position and operation status of the bus in real time, so as to better manage and dispatch the bus operation.

For realizing the above-mentioned purpose, the technical scheme that the utility model takes is:

An intelligent bus positioning and ticket checking system based on NB-IoT, comprising: positioning module, NB-IoT communication module, CPU main control module, ticket checking module, PSAM encryption and decryption module, storage module, LCD display module, voice broadcast module and The power supply module, the positioning module, the NB-IoT communication module, the ticket checking module, the PSAM encryption and decryption module, the storage module, the LCD display module, and the voice broadcast module are all connected to the CPU main control module;

The CPU main control module is used to control data communication and operation between each module; the NB-IoT communication module is used for data communication between the terminal of the bus positioning and ticket checking system and the bus management background system database platform; The positioning module is used to locate the bus position in real time, and transmit the real-time position information to the CPU main control module; transmission; the storage module is used for storing user information and interacts with the CPU main control module; the PSAM encryption and decryption module is used for encrypting or decrypting electronic bills, and contains the same key as the mobile intelligent terminal; the LCD display The module is used to display user information; the voice broadcast module is used to broadcast user information by voice; the power module is used to provide power to the terminal of the bus positioning and ticket checking system.

Further, the positioning module adopts GPS/BD dual-mode positioning technology.

Further, the CPU main control module includes an ARM processor chip, DDR and FLASH.

Further, the ticket checking module is one or both of a two-dimensional code module and an NFC module; the two-dimensional code module is used to provide two-dimensional code data to the mobile smart terminal for scanning and payment operations; the NFC module Data communication for payment operations with mobile smart terminals.

Further, the PSAM encryption and decryption module is composed of a PSAM read-write chip and a PSAM card.

Further, the mobile smart terminal is one of a smart phone, a tablet computer or a smart wearable device; the smart wearable device is one of smart glasses, a smart watch, a smart bracelet or a smart ring.

Further, the user information includes consumption amount and bill type.

Further, a bluetooth communication module is also included, and the bluetooth communication module is used for information transmission between the CPU main control module and the bus management background system.

The utility model has the following beneficial effects:

(1) The NB-IoT-based bus positioning and ticket checking system of the present utility model uses NB-IoT technology for communication, which can make the communication distance of the intelligent bus system farther, and allow more vehicles connected to the system. The amount of information is larger; NB-IoT's high gain and deep coverage capabilities can make up for the shortcomings of the original wireless communication network, can effectively feed back the current vehicle position and status information in real time, and can synchronize various bill information in a more timely manner. , so as to facilitate the accurate, effective and timely connection between the bus back-end management and the bus front-end.

(2) Using the bus positioning and ticket checking system of the present utility model, since the power consumption of the NB-IoT communication module is extremely low, the application scope of the intelligent bus system can be greatly expanded. The current power consumption of communication modules based on 2G, 3G and 4G When the bus is not running, the module is turned off, and the status of the bus cannot be monitored at this time. By adopting the technical scheme of the utility model, the all-weather real-time online monitoring of the bus can be realized, and the continuity of the information status can be maintained.

(3) By adopting the technical solution of the present utility model, using the NB-IoT technology, based on the network provided by the operator, the reliability and safety of the intelligent public transportation system can be greatly improved, the safety of communication data can be guaranteed, and the vehicle can be kept running smoothly; and It can reduce the deployment of aggregation gateways, save the overall cost, prolong the service life of the equipment, and reduce the power consumption.

Description of drawings

1 is a schematic structural diagram of the NB-IoT-based bus positioning and ticket checking system of the present invention;

FIG. 2 is a schematic diagram of the protocol framework of the NB-IoT-based bus positioning and ticket checking system of the present invention.

Detailed ways

In order to make those skilled in the art understand the technical solutions of the present invention more clearly, the technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings. The enumerated embodiments are only used to explain the present invention and are not intended to limit the present invention. range.

As shown in FIG. 1 , the present utility model provides an NB-IoT-based intelligent bus positioning and ticket checking system, including: a positioning module, an NB-IoT communication module, a CPU main control module, a ticket checking module, a PSAM encryption and decryption module, Storage module, LCD display module, voice broadcast module and power supply module, the positioning module, NB-IoT communication module, ticket checking module, PSAM encryption and decryption module, storage module, LCD display module, and voice broadcast module are all controlled by the CPU. module connection;

The CPU main control module mainly controls the data communication and operation between the various modules. Specifically, the CPU main control module includes an ARM processor chip, DDR and FLASH. In this embodiment, the ARM processor chip preferably adopts a quad-core. Cortex-A9, the main frequency can reach up to 1.2GHz, the DDR is preferably 2GB DDR3, and the FLASH is preferably 8GB EMMC Flash; the power module mainly provides power for the terminal of the bus positioning and ticket checking system.

As a preferred solution of the present invention, the NB-IoT communication module adopts QUECTEL BC95, which includes a BC95 module and a SIM card, the BC95 module communicates with the CPU main control module through a serial port, and the NB-IoT communication module communicates with the NB-IoT antenna through the NB-IoT antenna. Transmission and reception of communication data; the NB-IoT communication module used in this embodiment has the advantages of ultra-small package size, ultra-high sensitivity, and ultra-wide operating temperature range, and has embedded rich network service protocol stacks, with high NB-IoT gain , the coverage area is wide, so the use of the technical solution of the present utility model can make the communication distance of the intelligent public transportation system farther, allow more vehicles connected to the system, and the amount of information that can be obtained is larger and more timely; this embodiment adopts The NB-IoT communication module also has the characteristics of high performance and low power consumption, which can greatly expand the application scope of the intelligent bus system. The current communication modules based on 2G, 3G and 4G consume a lot of power. When the bus is not running, the module shuts down. At this time, the bus management background cannot monitor the status of the bus. Using the NB-IoT-based intelligent bus positioning and ticket checking system of the present invention, because the NB-IoT communication module consumes very little power, it can run continuously for a long time. There is no need to shut down the bus, so real-time online monitoring of the bus can be realized 24/7, thereby maintaining the continuity of information status.

As a preferred solution of the present invention, the positioning module adopts GPS/BD dual-mode positioning technology. In this embodiment, the u-blox NEO-M8N module is specifically used, which cooperates with the GPS/BD active antenna and is controlled by the CPU through the serial port. The module performs data interactive communication. The positioning module of this embodiment can judge the positioning accuracy according to the latitude, longitude and altitude of the data, and at the same time realize differential positioning to obtain a higher-precision positioning effect; the positioning module receives the positioning information through the GPS and BD antenna, and obtains the running The real-time position of the bus, the CPU main control module collects the real-time position information and transmits it to the bus management background system in real time through the NB-IoT communication module. Because NB-IoT has the ability of high gain and deep coverage, it can accurately and timely The location information of the running bus is sent to the bus management background system, so that the bus management background can obtain the real-time positioning information of each bus in time, which is convenient to manage and supervise the operation status.

As a preferred solution of the present invention, the ticket checking module may include a two-dimensional code module and/or an NFC module, and the two-dimensional code module mainly provides two-dimensional code data to the mobile intelligent terminal for scanning and payment operations. Specifically, two The dimensional code module is interconnected with the CPU main control module through a serial port; the NFC module provides data communication for the mobile smart terminal to perform payment operations. Specifically, the NFC module includes an NFC antenna and a non-contact reading and writing chip. When the mobile smart terminal is close to the NFC When the antenna is used, the mobile smart terminal works in the NFC card simulation mode. The NFC antenna provides a radio frequency field during the entire communication process. The non-contact read-write chip reads the simulated card information in the mobile smart terminal, and then decodes and transmits it to the CPU master through the serial port. module; when the user conducts ticket checking consumption through the ticket checking module, the ticket checking module collects the ticket checking information and transmits it to the CPU main control module. The CPU main control module processes the information collected by the ticket checking module, and then transmits the ticket checking information in real time through the NB-IoT communication module. Upload to the bus management background system; because NB-IoT has the characteristics of high gain and wide coverage, therefore, using the technical scheme of the present utility model can make the ticket information of the bus system terminal more comprehensive and timely synchronized to the bus management background system , so as to facilitate the bus management personnel to view and master all kinds of ticket information in the background.

As a preferred solution of the present invention, the mobile smart terminal is one of a smart phone, a tablet computer or a smart wearable device; preferably, the smart wearable device is one of smart glasses, a smart watch, a smart bracelet or a smart ring a kind of.

The storage module can store user information and perform information interaction with the CPU main control module.

The PSAM encryption and decryption module can encrypt or decrypt electronic bills, and contains the same key as the mobile smart terminal. Specifically, the PSAM encryption and decryption module is composed of a PSAM read-write chip and a PSAM card. The PSAM read-write chip communicates with the CPU master through the I2C bus. The communication content is to configure the communication rate of the PSAM card. The PSAM read-write chip reads the encryption and decryption information on the PSAM card, and then transmits it to the CPU main control chip through the serial port. The encrypted and decrypted content of the PSAM card needs to be matched with the ticket. Types are used in a one-to-one correspondence; the types of bills that can be encrypted or decrypted by the PSAM encryption and decryption module include: CPU card, MI card, UL card, and NFC mobile phone card.

The LCD display module mainly displays the user's consumption amount, check-in type, etc., and further, it can also display information such as account balance, check-in times, positioning status, and real-time Beijing time; It communicates with the control module and refreshes the current state information of human-computer interaction in real time.

The voice broadcast module mainly performs voice broadcast of user information, and the broadcast user information may include consumption amount, ticket checking type, and whether ticket checking is successful, etc., and may also broadcast information such as user balance, ticket checking times, and positioning status as needed; specifically, The voice broadcast module includes a power amplifier module and a speaker. The CPU main control module has a built-in DAC digital-to-analog conversion unit, which is used to output analog audio signals to the power amplifier module for amplification, and adjust the volume of the speaker by adjusting the gain of the power amplifier module.

The steps of using the NB-IoT-based intelligent bus positioning and ticket checking system of the present invention to check tickets are as follows: passengers show the two-dimensional code on the mobile phone APP or enable the NFC payment function, and when getting on the bus, align the two-dimensional code of the mobile phone APP with the two-dimensional Scan the code window, or put the mobile phone with NFC payment function close to the NFC card swiping area, the bus positioning and ticket checking system terminal will identify the corresponding ticket information and query the data on the system terminal, if the ticket exists, it can directly broadcast "Consumption amount" + ticket type + card swipe successfully", if the bus positioning and ticket checking system terminal does not retrieve the ticket locally, upload the ticket to the bus management background through the NB-IoT communication module for query and judgment, and wait for the background ticket inspection result data to be issued Afterwards, relevant voice broadcasts are carried out, and at the same time, the LCD display module displays prompt information, and the driver knows whether the passenger has successfully checked the ticket through the information broadcasted by the voice or the prompt information displayed by the LCD module.

As shown in Figure 2, the terminal of the bus positioning and ticket checking system of the present invention establishes a COAP uplink protocol with the NB-IoT base station through the NB-IoT communication module, and sends the information to the NB-IoT base station, and the NB-IoT base station communicates with the next level. The cloud server establishes the COAP downlink protocol, sends the information to the cloud server, the cloud server receives the information from the NB-IoT base station, and the bus management background system finally obtains the information from the bus positioning and ticket checking system terminal through the cloud server.

Further, it also includes a Bluetooth communication module, which can be used for short-distance information transmission between the CPU main control module and the bus management background system, and the transmission distance is generally within 300 meters. When the bus ends its operation every day and arrives at the bus terminal, a large amount of information can be transmitted through the Bluetooth communication module, such as upgrading and other related business programs.

Further, the NB-IoT-based bus positioning and ticket checking system of the present invention can also be connected to various sensors on the bus and the vehicle status detection interface through the CAN bus, so as to monitor the opening status of the vehicle door, the speed of the bus and the statistics of the bus. Information such as the number of passengers on the bus, so that the bus management background can obtain more comprehensive bus operation status information, which is convenient for management and scheduling.

To sum up, the NB-IoT-based bus positioning and ticket checking system of the present invention uses NB-IoT technology for communication, which can make the communication distance of the intelligent bus system farther, allow more vehicles connected to the system, and can The amount of information obtained is greater; the high gain and deep coverage capabilities of the NB-IoT module can make up for the shortcomings of the original wireless communication network, and can effectively feed back the current vehicle position and status information in real time, while simultaneously synchronizing various Bill information, so as to facilitate the accurate, effective and timely connection between the bus management background and the bus front end.

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above technical features, and should also cover the above technical features or Other technical solutions formed by any combination of its equivalent features.

Claims (2)

1. An intelligent bus positioning and ticket checking system based on NB-IoT is characterized in that, comprising: positioning module, NB-IoT communication module, CPU main control module, ticket checking module, PSAM encryption and decryption module, storage module, LCD display module, voice broadcast module and power supply module, the positioning module, NB-IoT communication module, ticket checking module, PSAM encryption and decryption module, storage module, LCD display module, and voice broadcast module are all connected with the CPU main control module; The NB-IoT communication module adopts QUECTEL BC95, including the BC95 module and the SIM card, and the BC95 module communicates with the CPU main control module through the serial port; The positioning module adopts GPS/BD dual-mode positioning technology, specifically adopts u-blox NEO-M8N module, cooperates with GPS/BD active antenna, and communicates with CPU main control module through serial port; The CPU main control module includes an ARM processor chip, DDR and FLASH; The PSAM encryption and decryption module is composed of a PSAM read-write chip and a PSAM card, and the PSAM read-write chip communicates with the CPU main control module through the I2C bus; The ticket checking module is one or both of a two-dimensional code module and an NFC module; the two-dimensional code module is interconnected with the CPU main control module through a serial port; the NFC module includes an NFC antenna and a non-contact reading and writing chip, It is connected with the CPU main control module through the serial port. 2. The NB-IoT-based intelligent bus positioning and ticket checking system according to claim 1, further comprising a bluetooth communication module, the bluetooth communication module is used for the CPU main control module and the bus management background system to carry out information transmission.