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Method for detecting people in vehicle, radar and vehicle

A technology for personnel detection and detection, which is applied to personnel detection in vehicles, radar and vehicles. In this field, it can solve the problems that the personnel monitoring technology in the vehicle is easily affected by the environment and the detection accuracy, so as to achieve the effect of improving the detection accuracy of personnel, stable operation, and ensuring the safety of personnel

Active Publication Date: 2019-05-21
WHST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a method for detecting people in a vehicle, a radar and a vehicle, so as to solve the problems that the existing technology for monitoring people in a vehicle is easily affected by the environment and has low detection accuracy.

Method used

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  • Method for detecting people in vehicle, radar and vehicle
  • Method for detecting people in vehicle, radar and vehicle
  • Method for detecting people in vehicle, radar and vehicle

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0043] see figure 1 , which is a schematic flow diagram of an embodiment of the method for detecting people in a vehicle provided by this embodiment, and is described in detail as follows:

[0044] Step S101 , acquiring multiple target echo signals when there are people in the vehicle, and performing preprocessing on each target echo signal to obtain multiple digital target signals.

[0045] Optionally, in this embodiment, multiple target echo signals reflected by targets in the vehicle may be obtained through a MIMO system. The MIMO system can generate a virtual array, that is, a few antenna array elements can be used to form a virtual array with multiple virtual array elements, thereby expanding the aperture of the antenna array and improving the angular resolution.

[0046] For an example, see figure 2 , the specific implementation process of obtaining multiple digital target signals by preprocessing each target echo signal described in step S101 may include:

[0047] S...

Embodiment 2

[0084] Corresponding to the method for detecting people in a vehicle described in Embodiment 1 above, this embodiment provides a radar for detecting people in a vehicle. For details, see Figure 5 , is a schematic structural diagram of the vehicle occupant detection radar in this embodiment. For ease of description, only the parts related to this embodiment are shown.

[0085] The vehicle occupant detection radar includes: a MIMO system 100 and a central processing unit 200 . Wherein, the central processing unit 200 may include: a radio frequency front-end module 210 , a digital processing system 220 and a microprocessor 230 . The MIMO system 100 is connected to the CPU 200 .

[0086] Specifically, the microprocessor 230 is used to configure the parameters of the radio frequency front-end module 210, so that the radio frequency front-end module 210 sends the millimeter wave signal to the MIMO system 100; the MIMO system 100 is used to transmit the millimeter wave signal acc...

Embodiment 3

[0102] Based on the radar for detecting people in the vehicle provided by the second embodiment above, a vehicle is provided in the third embodiment, including a vehicle-mounted central control system, an alarm device, a ventilation system controller and a vehicle-mounted ventilation device, as well as any The vehicle occupant detection radar described above also has the beneficial effect of any one of the vehicle occupant detection radars in the second embodiment above.

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Abstract

The invention is applicable to the technical field of vehicle-mounted radars and provides a method for detecting people in a vehicle, a radar and a vehicle. The method comprises the following steps of: acquiring a plurality of paths of target echo signals when people are in the vehicle, and preprocessing each path of target echo signals to obtain a plurality of paths of digital target signals; calculating a CAPON spectrum of the plurality paths of digital target signals to obtain target two-dimensional thermodynamic diagram information, and establishing an in-vehicle people identification model according to the target two-dimensional thermodynamic diagram information; acquiring multiple paths of echo signals to be detected in the vehicle, repeating the steps of preprocessing and calculating the CAPON spectrum to obtain the two-dimensional thermodynamic diagram information to be detected, and determining whether people are in the vehicle or not according to the in-vehicle people identification model and the two-dimensional thermodynamic diagram information to be detected. The embodiment of the invention is not influenced by the environment, can accurately detect whether a resident person exists in the vehicle, and ensures the personal safety of resident children or people who are inconvenient to move in the vehicle.

Description

technical field [0001] The invention belongs to the technical field of vehicle radar, and in particular relates to a method for detecting people in a vehicle, a radar and a vehicle. Background technique [0002] Traditional automobile personal safety protection is aimed at vehicles in the driving process, such as airbags, safety belts and other protective devices, as well as alarm devices such as rear-end collision alarms, to prevent personal accidents. However, with the frequent news of deaths of people in parked vehicles, especially children and infants, due to staying in closed vehicles for a long time, symptoms such as heatstroke and hypoxia will appear as the temperature changes in the vehicle and the accumulation of harmful gases. , Because such people do not have certain behavioral capabilities, they cannot call the police for help, nor can they take self-rescue measures for ventilation, which eventually leads to tragedy. Therefore, it is extremely important to config...

Claims

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Application Information

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IPC IPC(8): B60R21/015G01S7/41
Inventor 包红燕秦屹焦子朋任玉东张昆尹学良
Owner WHST CO LTD
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