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CN-121995515-A - Intelligent high-precision in-out recognition device and control method thereof

CN121995515ACN 121995515 ACN121995515 ACN 121995515ACN-121995515-A

Abstract

The invention discloses an intelligent high-precision in-out recognition device and a control method thereof, wherein the device comprises a separator, a mounting bracket and a detection device, the mounting bracket is arranged on the separator, the detection device is fixed on the mounting bracket, the fixed position is higher than the height of a human body, the detection device internally comprises two PCBA modules, a first infrared array sensor and a second infrared array sensor, the two PCBA modules are connected in a relatively rotatable mode and form an adjustable included angle alpha, the first infrared array sensor and the second infrared array sensor are respectively fixed on the two PCBA modules, the detection surfaces of the first infrared array sensor and the second infrared array sensor face downwards, and the optical axes of the first infrared array sensor and the second infrared array sensor incline downwards and intersect to form an infrared detection area. The device and the control method thereof solve the contradictory requirements that strict access management is required to be realized and personal privacy is required to be protected in the sensitive area.

Inventors

  • PENG XIAOZHAN
  • XU DEHUI

Assignees

  • 上海烨映微电子科技股份有限公司

Dates

Publication Date
20260508
Application Date
20260209

Claims (7)

  1. 1. The intelligent high-precision access identification device comprises a separator (1), a mounting bracket (2) and a detection device (3), wherein the mounting bracket (2) is arranged on the separator (1), the detection device (3) is fixed on the mounting bracket (2) and is positioned higher than the human body, the detection device (3) internally comprises two PCBA modules (301), a first infrared array sensor (302) and a second infrared array sensor (303), and is characterized in that the two PCBA modules (301) are connected in a relatively rotatable mode and form an adjustable included angle alpha, the first infrared array sensor (302) and the second infrared array sensor (303) are respectively fixed on the two PCBA modules (301), the detection surfaces of the first infrared array sensor (302) and the second infrared array sensor (303) face downwards, and an infrared detection area (304) is formed by the downward inclination of the optical axes of the first infrared array sensor (302) and the second infrared array sensor (303).
  2. 2. The intelligent high-precision entrance and exit recognition device according to claim 1, further comprising a height adjusting device, wherein the detection device (3) is adjustably fixed on the mounting bracket (2) through the height adjusting device.
  3. 3. The intelligent high-precision entrance and exit recognition device according to claim 1, wherein the adjustable range of the included angle alpha is 70-100 degrees, and the included angle alpha is adjusted through manual or electric driving.
  4. 4. A control method of an intelligent high-precision entrance and exit recognition device, adopting the intelligent high-precision entrance and exit recognition device according to any one of claims 1-3, characterized by comprising the following steps: Opening the first infrared array sensor (302) and the second infrared array sensor (303), and adjusting an included angle alpha between the two PCBA modules (301) to change the included angle between two optical axes of the first infrared array sensor (302) and the second infrared array sensor (303), so as to calibrate the infrared detection area (304); After calibration, when a person enters or leaves the infrared detection area (304), the first infrared array sensor (302) and the second infrared array sensor (303) scan sequentially according to a preset pixel scanning sequence, and perform person entering and exiting identification judgment according to the change of the pixel coordinate points corresponding to the detected temperature change of the human body.
  5. 5. The method for controlling an intelligent high-precision entrance and exit recognition device according to claim 4, wherein the step of performing personnel entrance recognition judgment according to the change of the pixel coordinate point corresponding to the detected temperature change of the human body comprises the steps of: If the second infrared array sensor (303) detects that the change sequence of the pixel coordinate points corresponding to the human body temperature change is (1, n) > (2, n) > (3, n) > (4, n) > (5, n) > (6, n) > (7, n) > (8, n), and then the first infrared array sensor (302) detects that the change sequence of the pixel coordinate points corresponding to the human body temperature change is (h, n) > (g, n) > (f, n) > (e, n) > (d, n) > (c, n) > (b, n) > (a, n), the human operator is judged to enter.
  6. 6. The method according to claim 5, wherein if the order of change of the pixel coordinate points corresponding to the change of the human body temperature detected by the second infrared array sensor (303) is (1, 1) > (2, 1) > (3, 1) > (4, 1) > (5, 1) > (6, 1) > (7, 1) > (8, 1), and then the order of change of the pixel coordinate points corresponding to the change of the human body temperature detected by the first infrared array sensor (302) is (h, 1) > (g, 1) > (f, 1) > (e, 1) > (d, 1) > (c, 1) > (b, 1) > (a, 1), it is determined that the person enters from one side edge; If the second infrared array sensor (303) detects that the change sequence of the pixel coordinate points corresponding to the human body temperature change is (1, 8) > (2, 8) > (3, 8) > (4, 8) > (5, 8) > (6, 8) > (7, 8) > (8, 8), and then the first infrared array sensor (302) detects that the change sequence of the pixel coordinate points corresponding to the human body temperature change is (h, 8) > (g, 8) > (f, 8) > (e, 8) > (d, 8) > (c, 8) > (b, 8) > (a, 8), the person is judged to enter from the edge of the other side.
  7. 7. The method for controlling an intelligent high-precision entrance/exit recognition device according to claim 4, wherein the step of performing a person-exit recognition judgment based on a change in a pixel coordinate point corresponding to a detected change in a human body temperature, comprises: If the first infrared array sensor (302) detects that the change sequence of the pixel coordinate points corresponding to the human body temperature change is (a, n) > (b, n) > (c, n) > (d, n) > (e, n) > (f, n) > (g, n) > (h, n), and then the second infrared array sensor (303) detects that the change sequence of the pixel coordinate points corresponding to the human body temperature change is (8, n) > (7, n) > (6, n) > (5, n) > (4, n) > (3, n) > (2, n) > (1, n), the judgment is that the person leaves.

Description

Intelligent high-precision in-out recognition device and control method thereof Technical Field The invention belongs to the field of personnel passing management, and particularly relates to an intelligent high-precision entry and exit recognition device and a control method thereof. Background Firstly, under the requirement of digital transformation rigidity, various industries are carrying out digital and intelligent upgrading. The people stream data is taken as basic data of operation, management and safety, and the automatic and accurate acquisition is a primary link. Secondly, equipment is a trend of replacing manual work, safety and compliance requirements are improved in the field of secret related fields, countries have extremely strict regulations on personnel flow management in secret related places, traceability and auditability are required, and traditional manual registration is low in efficiency and easy to tamper. Thirdly, public safety and fire control, namely fire control channel occupation and important area overman early warning are rigid requirements. Traffic hubs such as airports need to monitor regional population in real time to cope with emergencies. Fourth, privacy protection regulations are increasingly strict, and with the deep implementation of regulations such as "network security laws" and "personal information protection laws", risks and legal costs of abusing cameras are dramatically increased, and a solution that can accurately manage and not infringe personal privacy is needed in the market. Disclosure of Invention In order to solve the contradictory requirements of realizing strict access management and protecting personal privacy in sensitive areas, the invention provides a safe, reliable and efficient intelligent high-precision access identification device and a control method thereof, which can be widely applied to fire-fighting channels, confidential places, libraries, enterprise office areas, unmanned hotels, airplane hatches, airport security inspection channels and other access scenes needing access management. In order to achieve the above purpose, the present invention adopts the following technical scheme: In one embodiment of the invention, an intelligent high-precision access identification device is provided, the device comprises a separator, a mounting bracket and a detection device, the mounting bracket is arranged on the separator, the detection device is fixed on the mounting bracket, the fixed position is higher than the height of a human body, the detection device internally comprises two PCBA modules, a first infrared array sensor and a second infrared array sensor, the two PCBA modules are connected in a relatively rotatable mode and form an adjustable included angle alpha, the first infrared array sensor and the second infrared array sensor are respectively fixed on the two PCBA modules, the detection surfaces of the first infrared array sensor and the second infrared array sensor face downwards, and the optical axes of the first infrared array sensor and the second infrared array sensor face downwards and intersect to form an infrared detection area. Further, the device also comprises a height adjusting device, and the detecting device is adjustably fixed on the mounting bracket through the height adjusting device. Further, the included angle alpha can be adjusted within the range of 70 degrees to 100 degrees by manual or electric driving. In an embodiment of the present invention, a control method for an intelligent high-precision in-out recognition device is also provided, and the intelligent high-precision in-out recognition device includes the following steps: The first infrared array sensor and the second infrared array sensor are started, and the included angle alpha between the two PCBA modules is adjusted to change the included angle between the two optical axes of the first infrared array sensor and the second infrared array sensor, so that the infrared detection area is calibrated; After calibration is completed, when a person enters or leaves the infrared detection area, the first infrared array sensor and the second infrared array sensor sequentially scan according to a preset pixel scanning sequence respectively, and the person entering and exiting identification judgment is carried out according to the change of the pixel coordinate points corresponding to the detected temperature change of the human body. Further, according to the change of the pixel coordinate point corresponding to the detected temperature change of the human body, the personnel entering identification judgment is performed, including: And if the second infrared array sensor detects that the change sequence of the pixel coordinate points corresponding to the human body temperature change is (1, n) > (2, n) > (3, n) > (4, n) > (5, n) > (6, n) > (7, n) > (8, n), and then the first infrared array sensor detects that the change sequence of the pixel coordinate points co