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Method for counting number of people based on millimeter wave radar

A technology of millimeter-wave radar and the number of people, which is applied in radio wave measurement system, radio wave reflection/reradiation, measurement device, etc., can solve the problem that it is difficult to balance the application economy and accuracy of people detection and counting, Achieve the effect of great cost control advantage, low radar signal power and high accuracy

Inactive Publication Date: 2019-11-26
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods are limited by cost, accuracy, and difficulty in implementation, making it difficult to strike a balance between economy and accuracy in the application of people detection and counting

Method used

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  • Method for counting number of people based on millimeter wave radar

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Embodiment 1

[0030] A method for counting the number of people based on millimeter-wave radar, which is used to monitor the number of people entering and leaving a meeting room, specifically includes the following steps:

[0031] Step 1: Install the radar at a certain height on the wall of the conference room, and make the radar field of view cover the entrance and exit area of ​​the conference room, and transmit electromagnetic wave signals and receive echo signals in the range of the conference room through the millimeter-wave radar. Such as figure 2 Shown is a schematic diagram of a meeting room from above. The indoor size of the meeting room in this embodiment is 8m*6m, where A is a schematic diagram of the radar and its radiation direction, and the dotted line area where B is located is the entrance and exit area of ​​the meeting room personnel.

[0032] Step 2: When someone enters or exits the meeting room, the radar outputs multiple target point information corresponding to the hum...

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Abstract

The invention discloses a personnel counting method based on a millimeter-wave radar, and the method comprises the steps: A, installing the millimeter-wave radar at a certain height position in a measured space, enabling a field of view of the millimeter-wave radar to cover an entrance and exit region of the measured space, transmitting an electromagnetic wave signal to a measured space range through the millimeter wave radar, and receiving an echo signal; B, outputting multiple pieces of target point information corresponding to the human body by the the millimeter wave radar according to specific setting of CFAR threshold parameters; C, clustering the target points, and representing the movement track of a person by using the clusters; and D, setting a counting boundary, and judging whether the person enters or leaves the measured space according to the characteristic that the track passes through the counting boundary. According to the method, the millimeter wave radar is used for transmitting radio waves to directly irradiate a to-be-measured space, the position and the movement track of the people target are measured according to reflected electromagnetic wave signal, whetherthe people target is located in the area or not is judged, and thus the purpose of counting the number of people in a specific range is achieved.

Description

technical field [0001] The invention relates to the technical field of radar applications, in particular to a method for counting the number of people based on millimeter wave radar. Background technique [0002] Personnel detection and quantity statistics are indispensable data in many existing scenarios, such as airports, shopping malls, chain stores, stations, museums, conference rooms, etc. Personnel detection and data estimation play an important role in safety management and improving the overall service level. important role. Common people detection technology mainly uses a single face recognition method, which is less accurate, such as when facing away from the camera. The access control system of RFID technology can monitor the entrance and exit of the area, but it needs to equip everyone with corresponding tags and deploy a large number of card reading devices, which is costly and poor in scalability and versatility. With the advancement of science and technology...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/88G01S13/72G01S13/58G01S13/42
CPCG01S13/88G01S13/72G01S13/42G01S13/58
Inventor 周杨万潇刘传银刘贤洪
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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