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Simplified gnss positioning method and device for internet of things terminal

A technology of an Internet of Things terminal and a positioning method, which is applied in the field of GNSS positioning methods and devices capable of realizing the method, can solve the problem of not having high requirements for real-time performance (such as meeting the requirements within 100 meters, etc., and achieves flexible and diverse implementation methods. Reduced power consumption and cost savings

Active Publication Date: 2021-07-13
NURLINK TECH NANJING LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

IoT terminals require positioning chips with as low power consumption and cost as possible, but do not have high requirements for positioning accuracy, sensitivity, positioning time, and real-time performance (for example, within 100 meters to meet the requirements), and do not need to communicate with wireless Simultaneously
However, in the prior art, there is no positioning chip that can match the above-mentioned requirements.

Method used

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  • Simplified gnss positioning method and device for internet of things terminal
  • Simplified gnss positioning method and device for internet of things terminal
  • Simplified gnss positioning method and device for internet of things terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] It should be noted that an existing IoT communication chip includes a radio frequency unit, an ADC analog-to-digital conversion unit, a baseband circuit, a storage unit, and a general-purpose processor (DSP). Therefore, based on the IoT communication chip, we can obtain GNSS signals. The innovation of the present invention lies in the use of off-line processing method for satellite search and positioning: by opening the radio frequency unit and baseband circuit in the IoT communication chip to store GNSS signals for a short period of time, and then closing the front-end radio frequency and baseband circuit parts, Then use the processor to capture and search for satellites and locate. The radio frequency unit and the baseband circuit here may be existing components in the communication chip, or may be related hardware specially set for the GNSS positioning function in the communication chip.

[0038] More specifically, the simplified GNSS positioning method for IoT term...

Embodiment 2

[0049] This example provides a simplified GNSS positioning device implemented in an IoT communication chip at a near-zero cost, that is, the relevant hardware in the IoT wireless communication chip (including radio frequency, analog-to-digital converter ADC, baseband processing circuit, storage unit, processor / DSP), its hardware architecture is as Figure 4 As shown, it is the radio frequency unit, ADC analog-to-digital conversion unit, baseband circuit, storage unit and general-purpose processor (DSP) that are connected in sequence in the wireless communication chip of the Internet of Things. In this example, no dedicated GNSS hardware is provided, and only the non-real-time offline method provided in Embodiment 1 needs to be implemented in software. The positioning device provided in this example, that is, the existing IoT communication chip, does not require additional modifications to the hardware, and the cost is extremely low.

Embodiment 3

[0051] This example provides a simplified GNSS positioning device implemented in an IoT communication chip at a near-zero cost. Its hardware architecture is as follows: Figure 5 As shown, only the GNSS dedicated baseband circuit unit is set, and the GNSS dedicated baseband circuit unit is respectively connected with the existing ADC analog-to-digital conversion unit and the storage unit in the wireless communication chip of the Internet of Things, and the non-real-time provided in the first embodiment is implemented in software. offline method. The positioning device provided in this example adds a very small amount of GNSS dedicated hardware to the existing IoT communication chip, and the cost is extremely low.

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PUM

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Abstract

The invention discloses a simplified GNSS positioning method and device that can be used for Internet of Things terminals. The GNSS signal is stored for a period of time, and then a radio frequency unit and a baseband circuit are turned off, and a processor is used to capture, search and locate satellites. The present invention can implement GNSS positioning technology in the terminal chip of the Internet of Things, greatly saves costs, reduces power consumption, and can adapt to many positioning requirements of the Internet of Things. Based on this method, the present invention can be realized in hardware in the communication chip of the Internet of Things without hardware modification. For the Internet of Things terminals without positioning requirements, it is only necessary to turn off the GNSS function in the software settings to avoid any unnecessary hardware or software costs . In addition, the present invention also provides a variety of hardware implementation methods. According to the needs, the original Internet of Things communication chip can be partially or completely used, and multiple GNSS dedicated hardware can also be set. The implementation methods are flexible and diverse, and the scope of application is wide.

Description

technical field [0001] The invention belongs to the technical field of Internet of Things positioning, and relates to a GNSS positioning method for an Internet of Things terminal and a device capable of realizing the method. Background technique [0002] A large number of IoT terminals have positioning requirements, such as assets that need to be tracked, shared bicycles, wearable devices, and smart public devices (such as manhole covers, trash cans, and other mobile devices). Many of the application scenarios are in outdoor open areas, for example, locators used in animal husbandry to track cattle and sheep, tracking of manhole covers, trash cans, etc., recovery tracking of large-capacity batteries, tracking of dock containers, etc. [0003] At present, the GNSS positioning chips in the consumer electronics market are designed for mobile phones, personal navigation devices and automobiles. The product form is a GNSS chipset, or a separate GNSS chip SOC, or integrated in a w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W52/02H04W64/00H04W88/06H04B1/40
CPCH04B1/40H04W4/02H04W52/0209H04W64/003H04W88/06Y02D30/70
Inventor 鲁郁
Owner NURLINK TECH NANJING LTD