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Composite precise positioning system and positioning method thereof

A technology of precise positioning and positioning method, applied in the field of positioning system, can solve problems such as inability to receive satellite signals, weak signals, and interference from environmental factors, and achieve the effects of high positioning accuracy, low energy consumption, and stable positioning performance

Inactive Publication Date: 2015-04-29
SHANGHAI CRIMINAL SCI TECH RES INST +1
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AI Technical Summary

Problems solved by technology

However, due to the limitation of GPS positioning accuracy, there is still a lack of means to achieve precise orientation and positioning of the target within 10 meters, especially in indoor environments, where satellite signals cannot be received or the signals are very weak
At the same time, there is also a method of ranging only by using the signal strength RSSI, but it is greatly disturbed by environmental factors

Method used

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  • Composite precise positioning system and positioning method thereof
  • Composite precise positioning system and positioning method thereof
  • Composite precise positioning system and positioning method thereof

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Embodiment

[0025] Such as figure 1 , figure 2 and image 3 As shown, the composite precise positioning system includes a master node unit 1, a slave node unit 2 and a monitoring center 3, and the slave node 2, as an object to be positioned, has its own positioning function, and it is connected with the master node unit 1 and the monitoring center 3 connected via wireless communication.

[0026] Wherein, the master node unit 1 includes an active RFID module 5; the slave node unit 2 includes a microcontroller 4, an active RFID module 5, a GNSS module 6, a GSM module 7 and a power supply module 8, and the microcontroller 4. The active RFID module 5, the GNSS module 6 and the GSM module 7 are respectively connected to the power supply module 8, and the GNSS module 6 and the GSM module 7 are all connected to the microcontroller 4 through a serial port.

[0027] The locating function of described active RFID (active radio frequency identification) module 5 is to adopt the method for combin...

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Abstract

The embodiment of the invention discloses a composite precise positioning system which comprises a main node unit, a slave node unit serving as a positioned object, and a monitoring center, wherein the slave node unit is connected with the main node unit and the monitoring center in a wireless communication manner respectively; the main node unit comprises an active RFID (radio frequency identification) module; the slave node unit comprises a microcontroller, an active RFID module, a GNSS (global navigation satellite system) module, a GSM (global system for mobile communications) module and a power supply module; the microcontroller, the active RFID module, the GNSS module and the GSM module are electrically connected with the power supply module respectively; both the GNSS module and the GSM module are connected with the microcontroller through serial ports. The embodiment of the invention further discloses a positioning method of the composite precise positioning system. With the adoption of the positioning system and the positioning method, high-precision positioning can be realized.

Description

technical field [0001] The invention relates to a positioning system, in particular to a miniature composite precise positioning system based on RFID, GSM and GNSS and a positioning method thereof. Background technique [0002] At present, the common tracking and positioning equipment on the market usually integrates GPS and GSM, uses GPS for precise positioning, and uses GSM for base station positioning and positioning information transmission. However, due to the limitation of GPS positioning accuracy, there is still a lack of means to achieve precise orientation and positioning of the target within 10 meters, especially in indoor environments, where satellite signals cannot be received or the signals are very weak. At the same time, there is also a method of using only the signal strength RSSI for ranging, but it is greatly disturbed by environmental factors. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/48
CPCG01S19/48
Inventor 陈伟李凌云孙奋进崔恒荣严岩董立敏糜忠良蔡伟思田巍刘文斌周涛朱浩
Owner SHANGHAI CRIMINAL SCI TECH RES INST
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