CN210867773U

CN210867773U - NB-IoT-based equipment positioning device and system

Info

Publication number: CN210867773U
Application number: CN201922422222.3U
Authority: CN
Inventors: 李健诚; 李文; 游鸿东; 蔡水彬; 雒弦
Original assignee: Xiamen Elite Electric Co ltd
Current assignee: Xiamen Elite Electric Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-06-26
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses an equipment positioning device and system based on NB-IoT, wherein the positioning device comprises an MCU module, an NB-IoT module, an accelerometer module, a positioning module and a power supply module; the MCU module is connected with the accelerometer module through an I2C interface to receive acceleration information of equipment; the MCU module is connected with the positioning module through an LEUART interface to receive the position information of the equipment; the MCU module is connected with the NB-IoT module through a UART interface so as to send the acceleration information and the position information of the equipment to a remote control platform; the power supply module is respectively connected with the MCU module, the NB-IoT module, the accelerometer module and the positioning module to supply power. The invention has the characteristics of low power consumption and low cost, can accurately position the equipment and effectively prevent the equipment from being stolen.

Description

NB-IoT-based equipment positioning device and system

Technical Field

The utility model relates to a location technical field, in particular to equipment positioner based on NB-IoT.

Background

In recent years, along with the continuous development of Chinese economy, although the public transportation operation capacity is continuously improved, the public travel requirement cannot be well met, and electric vehicles and motorcycles are deeply loved by a large number of consumers by virtue of the advantages of environmental protection, convenience, economy, practicability and the like. As expected by the industry research institute, the quantity of electric vehicles in China will exceed 3 hundred million in the next 5 years. However, the lack of effective management of the electric vehicle causes serious potential safety hazards to owners and drivers of the electric vehicle due to traffic safety problems, robbery and the like in the driving process. Meanwhile, a plurality of electric vehicles do not register and record, and a plurality of problems are brought to law enforcement work.

In order to solve the problems, some manufacturers propose solutions using the RFID technology, which require a collector to be erected at each large intersection, and have high construction cost, limited coverage and poor effect. Some manufacturers have adopted locator solutions and most often 2G \3G \4G network communications. However, the power consumption of such products is generally high, and the cost of such positioning devices is relatively high due to the relatively high price of the 3G \4G communication module. For these reasons, intelligent trackers based on vehicle positioning have been difficult to spread over large areas. With the advent of the technology of NB-IoT of the internet of things, NB-IoT networks and NB-IoT modules in the LPWA field have advantages over 2G/3G/4G networks and modules, so that NB-IoT can better address the positioning requirement in this field. Therefore, the application of NB-IoT technology on locators is currently the preferred choice.

The main advantages of NB-IoT communication are:

1. big linking: with the same base station, NB-IoT may provide 50-100 times the number of accesses over existing wireless technologies. One sector can support 10 ten thousand connections, and support low delay sensitivity, ultra-low equipment cost, low equipment power consumption and optimized network architecture.

2. Wide coverage: the NB-IoT indoor coverage capability is strong, the gain is improved by 20dB compared with that of LTE, and the capability of the coverage area is improved by 100 times. The system can meet the wide coverage requirement of rural areas, and is also applicable to factories and underground garages with the requirement on deep coverage.

3. Low power consumption: the low power consumption characteristic is an important index of the application of the Internet of things, and particularly for some devices and occasions where batteries cannot be replaced frequently, such as various sensing and monitoring devices arranged in remote areas of mountain wildlands, the devices and the occasions cannot be charged like smart phones one day, and the service life of the batteries as long as several years is the most essential requirement.

4. The cost is low: NB-IoT requires no re-networking and both radio frequency and antenna are essentially multiplexed.

Therefore, the coverage of the locator network can be greatly improved by the characteristics of the NB-IoT, and the positioning problem of the electric vehicle and the motorcycle can be effectively solved by the base station positioning function which is expected to be realized subsequently. In view of the future keeping quantity of electric vehicles and motorcycles, public safety and the requirement of vehicle owners on the positioning rigidity of the vehicles, the NB-IoT intelligent tracker has wide application prospect and huge demand market.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art, provide an equipment positioner and system based on NB-IoT with low-power consumption and low cost.

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

in one aspect, the present invention provides an NB-IoT based device positioning apparatus, which is disposed on a device, and includes: the system comprises an MCU module, an NB-IoT module, an accelerometer module, a positioning module and a power supply module; the MCU module is connected with the accelerometer module through an I2C interface to receive acceleration information of equipment; the MCU module is connected with the positioning module through an LEUART interface to receive the position information of the equipment; the MCU module is connected with the NB-IoT module through a UART interface so as to send the acceleration information and the position information of the equipment to a remote control platform; the power supply module is respectively connected with the MCU module, the NB-IoT module, the accelerometer module and the positioning module to supply power.

Preferably, the MCU module comprises a chip with the model of EFM32ZG, and the EFM32ZG chip adopts a 32-bit ARMCortex-M0+ processor.

Preferably, the NB-IoT module includes a chip of model ST 1328; and the ST1328 chip is packaged by adopting LCC.

Preferably, the accelerometer module comprises a chip with a model number of LIS2DH 12; the LIS2DH12 chip is a 3-axis linear acceleration sensor, and a temperature sensor is embedded in the chip.

Preferably, the positioning module comprises a chip with a model number HD 8020.

Preferably, the power module comprises a voltage reduction constant voltage chip, a standby lithium battery charging chip and a voltage stabilization chip; the input end of the voltage reduction constant voltage chip is connected with a lithium battery of equipment, and the output end of the voltage reduction constant voltage chip is connected with the input end of the voltage stabilization chip and the input end of the standby lithium battery charging chip; the output end of the standby lithium battery charging chip is connected with the voltage stabilizing chip to supply power when the voltage reducing constant voltage chip has no output power supply; the output end of the voltage stabilizing chip is respectively connected with the MCU module, the NB-IoT module, the accelerometer module and the positioning module to supply power; the lithium battery of the equipment is powered by an external power supply.

Preferably, the type of the pressure-reducing constant-voltage chip is H6203; the model of the standby lithium battery charging chip is H4054; the model of the voltage stabilizing chip is R1114.

Preferably, the voltage stabilization chip comprises one or more blocks.

Preferably, the apparatus includes an electric vehicle and a motorcycle.

In another aspect, an NB-IoT based device positioning system includes the device positioning apparatus, a remote control platform, and a user terminal; the MCU module is connected with the NB-IoT module through a UART interface so as to send the acceleration information and the position information of the equipment to the remote control platform; and the remote control platform sends information to the user terminal.

The utility model provides a beneficial effect that technical scheme brought is:

(1) the MCU module of the utility model adopts an EFM32ZG chip, the chip adopts a 32-bit ARM Cortex-M0+ processor, the highest rate is 24MHz, and the MCU module has the advantages of high efficiency, low power consumption and the like; the MCU module is communicated with the accelerometer module through I2C to acquire acceleration information; the network data transmission function is realized by communication between UART and NB-IoT module; the LEUART is communicated with a positioning module to realize the acquisition of positioning data;

(2) the utility model discloses a NB-IoT module adopts ST1328 chip, ST1328 is a section high performance, low-power consumption's NB-IoT wireless communication module, and its size only is 18mm × 16mm × 2.2.2 mm, can satisfy the demand of equipment to small-size module product furthest, effectively help the customer to reduce the product size and optimize product cost simultaneously, in addition, ST1328 chip adopts integrated form antenna design (PCB inboard antenna), makes further reduce cost under the prerequisite of guarantee NB-IoT and location baseband signal;

(3) the utility model adopts the mode of an external power supply and a standby battery to supply power, and supplies power through the external power supply in the normal use process; when the equipment positioning device is illegally detached, sheared and the like, the equipment positioning device continuously sends positioning information through the power supply of the standby battery.

The present invention will be described in further detail with reference to the drawings and examples, but the present invention is not limited to the examples.

Drawings

FIG. 1 is a block diagram of the positioning device of the present invention;

FIG. 2 is a block diagram of the circuit structure of the device positioning apparatus of the present invention;

fig. 3 is a circuit diagram of the MCU module of the present invention;

fig. 4 is a circuit diagram of an NB-IoT module of the present invention; wherein (a) represents an ST1328 chip; (b) representing a SIM card chip;

fig. 5 is a circuit diagram of a connection module between the MCU module and the NB-IoT module of the present invention; wherein, (a) represents a scene that the NB-IoT module is a transmitting end and the MCU module is a receiving end; (b) representing a scene that an NB-IoT module is a receiving end and an MCU module is a transmitting end;

fig. 6 is a circuit diagram of an accelerometer module of the present invention;

fig. 7 is a circuit diagram of a positioning module of the present invention;

fig. 8 is a circuit diagram of the power module of the present invention.

Detailed Description

Referring to fig. 1 and fig. 2, in one aspect, the present invention provides an NB-IoT based device positioning apparatus, which is disposed on a device, and includes: MCU module 10, NB-IoT module 20, accelerometer module 30, positioning module 40, and power module 50; the MCU module 10 is connected with the accelerometer module 30 through an I2C interface to receive acceleration information of equipment; the MCU module 10 is connected with the positioning module 40 through an LEUART interface to receive the position information of the equipment; the MCU module 10 is connected with the NB-IoT module 20 through a UART interface to send the acceleration information and the position information of the device to a remote control platform; the power module 50 is connected to the MCU module 10, the NB-IoT module 20, the accelerometer module 30, and the positioning module 40 respectively for supplying power.

Specifically, in order to prevent the device locating device from being detached by a device picker or a thief after the device is lost, the device locating device may be installed in a hidden place of the device. In this embodiment, the device includes an electric vehicle or a motorcycle, but may also be other devices, such as various smart meters.

Referring to fig. 3 to 8, the MCU module 10 includes a chip model EFM32ZG, and the EFM32ZG chip employs a 32-bit ARM Cortex-M0+ processor.

The NB-IoT module 20 comprises a chip with a model number of ST1328, ST1328 is a high-performance and low-power consumption NB-IoT wireless communication module, the size of the NB-IoT wireless communication module is only 18mm × 16mm × 2.2.2 mm, the requirement of terminal equipment on a small-size module product can be met to the maximum extent, meanwhile, the ST1328 is effectively helped to reduce the product size and optimize the product cost, abundant external interfaces and protocol stacks are provided for the ST1328, meanwhile, an Internet of things cloud platform of China telecom, China Mobile and China Unicom is supported, and great convenience is provided for application of a client.

ST1328 adopts LCC encapsulation that is easier to weld, and the production of module fast can be realized to standard SMT equipment, provides reliable connected mode for the customer to application demand under the complex environment is satisfied.

Specifically, the EFM32ZG chip is connected to the ST1328 chip through an EFM32_ RXD interface and an EFM32_ TXD interface for sending and receiving messages. The ST1328 chip comprises a VIO18 interface, a BC30_ TXD interface and a BC30_ RXD interface. The EFM32_ RXD interface, the BC30_ TXD interface and the VIO18 interface are connected through a triode Q2, wherein the EFM32_ RXD interface is connected with a collector electrode of a triode Q2, the BC30_ TXD interface is connected with an emitter electrode of a triode Q2, and the VIO18 interface is connected with a base electrode of a triode Q2. The EFM32_ TXD interface, the BC30_ RXD interface and the VIO18 interface are connected through a transistor Q3, wherein the EFM32_ TXD interface is connected with an emitter electrode of a transistor Q3, the BC30_ RXD interface is connected with a collector electrode of a transistor Q3, and the VIO18 interface is connected with a base electrode of a transistor Q3.

The accelerometer module 30 comprises a chip of type LIS2DH 12; the LIS2DH12 chip is an ultra-low power consumption high performance 3-axis linear acceleration sensor, can support I2C and SPI output, 2 independently programmable interrupt generators, and is embedded with a temperature sensor, and can stably operate in the temperature range of-40 ℃ to +85 ℃.

Specifically, the EFM32ZG chip and the LIS2DH12 chip are connected via a 2D _ SCL and a 2D _ SDA to perform message transmission and reception.

The positioning module 40 includes a chip with model number HD 8020. The HD8020 is an SOC chip product which can realize a single chip solution and meet navigation and positioning requirements of position sensing, logistics transportation and the like. Seamless positioning can be realized even in dense urban canyons, and the method has short positioning time and excellent cruising ability. The HD8020 is internally provided with an intelligent power supply for controlling, so that a flexible power supply mode and the lowest power consumption can be realized, the micro-voltage backup mode can realize the extremely low power consumption under the condition of not completely turning off the power supply, and meanwhile, the capability of communicating with external equipment under the deep sleep mode is reserved. The main technical characteristics are as follows: 1) support multimode GNSS satellite signal reception, 2) support big dipper satellite navigation positioning system, 3) interference detection, dynamic filtering interference, 4) peripheral hardware pin allocation can be configured, 5) intelligent power management, 6) wide voltage range.

Specifically, the EFM32ZG chip and the LIS2DH12 chip are connected through a GPS _ TXD and a GPS _ RXD for transmitting and receiving messages.

The power module 50 comprises a voltage reduction and constant voltage chip, a standby lithium battery charging chip and a voltage stabilization chip; the input end of the voltage reduction constant voltage chip is connected with a lithium battery of equipment, and the output end of the voltage reduction constant voltage chip is connected with the input end of the voltage stabilization chip and the input end of the standby lithium battery charging chip; the output end of the standby lithium battery charging chip is connected with the voltage stabilizing chip to supply power when the voltage reducing constant voltage chip has no output power supply; the output end of the voltage stabilizing chip is respectively connected with the MCU module 10, the NB-IoT module 20, the accelerometer module 30 and the positioning module 40 to supply power; the lithium battery of the equipment is powered by an external power supply.

The model of the pressure-reducing constant-voltage chip is H6203; the model of the standby lithium battery charging chip is H4054; the model of the voltage stabilizing chip is R1114. In this embodiment, the voltage regulator chip includes one or more blocks.

The equipment positioning device of the invention uses the mode of an external power supply and a standby battery to supply power, and supplies power through the external power supply in the normal use process. When the equipment is illegally dismantled, cut off and other abnormal conditions, the equipment positioning device continuously sends positioning information through the power supply of the standby battery.

Specifically, the power module 50 supplies power to the MCU module 10 and the accelerometer module 30 through a VDD33 interface; the power module 50 supplies power to the NB-IoT module 20 through a VDD33NB interface; the power module 50 supplies power to the positioning module 40 through the VDD33 GPS. In addition, the power module 50 is connected with the MCU module 10 through a GPS _ V33_ EN to control whether to provide power for the positioning module 40; the power module 50 is connected to the MCU module 10 through NB _ V33_ EN to control whether to provide power to the NB-IoT module 20.

In another aspect, an NB-IoT based device positioning system includes the device positioning apparatus, a remote control platform, and a user terminal; the MCU module 10 is connected with the NB-IoT module 20 through a UART interface to send the acceleration information and the position information of the device to the remote control platform; and the remote control platform sends information to the user terminal.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. An NB-IoT based device location apparatus, the device location apparatus disposed on a device, comprising: the system comprises an MCU module, an NB-IoT module, an accelerometer module, a positioning module and a power supply module; the MCU module is connected with the accelerometer module through an I2C interface to receive acceleration information of equipment; the MCU module is connected with the positioning module through an LEUART interface to receive the position information of the equipment; the MCU module is connected with the NB-IoT module through a UART interface so as to send the acceleration information and the position information of the equipment to a remote control platform; the power supply module is respectively connected with the MCU module, the NB-IoT module, the accelerometer module and the positioning module to supply power.

2. An NB-IoT based device location apparatus as recited in claim 1, wherein:

the MCU module comprises a chip with the model of EFM32ZG, and the EFM32ZG chip adopts a 32-bit ARM Cortex-M0+ processor.

3. An NB-IoT based device location apparatus as recited in claim 1, wherein:

the NB-IoT module comprises a chip with model number ST 1328; and the ST1328 chip is packaged by adopting LCC.

4. An NB-IoT based device location apparatus as recited in claim 1, wherein:

the accelerometer module comprises a chip with the model number LIS2DH 12; the LIS2DH12 chip is a 3-axis linear acceleration sensor, and a temperature sensor is embedded in the chip.

5. An NB-IoT based device location apparatus as recited in claim 1, wherein:

the positioning module comprises a chip with the model number HD 8020.

6. An NB-IoT based device location apparatus as recited in claim 1, wherein:

the power supply module comprises a voltage reduction constant voltage chip, a standby lithium battery charging chip and a voltage stabilization chip; the input end of the voltage reduction constant voltage chip is connected with a lithium battery of equipment, and the output end of the voltage reduction constant voltage chip is connected with the input end of the voltage stabilization chip and the input end of the standby lithium battery charging chip; the output end of the standby lithium battery charging chip is connected with the voltage stabilizing chip to supply power when the voltage reducing constant voltage chip has no output power supply; the output end of the voltage stabilizing chip is respectively connected with the MCU module, the NB-IoT module, the accelerometer module and the positioning module to supply power; the lithium battery of the equipment is powered by an external power supply.

7. An NB-IoT based device location apparatus as recited in claim 6, wherein:

the model of the pressure-reducing constant-voltage chip is H6203; the model of the standby lithium battery charging chip is H4054; the model of the voltage stabilizing chip is R1114.

8. An NB-IoT based device location apparatus as recited in claim 6, wherein:

the voltage stabilizing chip comprises one or more blocks.

9. An NB-IoT based device location apparatus as recited in claim 1, wherein:

the device comprises an electric vehicle and a motorcycle.

10. An NB-IoT based device positioning system, comprising the device positioning apparatus of any of claims 1 to 9, further comprising a remote control platform and a user terminal; the MCU module is connected with the NB-IoT module through a UART interface so as to send the acceleration information and the position information of the equipment to the remote control platform; and the remote control platform sends information to the user terminal.