CN214845743U

CN214845743U - Human body induction device and advertising machine

Info

Publication number: CN214845743U
Application number: CN202120718576.7U
Authority: CN
Inventors: 陈永茂; 黄仁植; 谭海锋; 刘敏芝
Original assignee: Shenzhen Baiyuda Technology Co ltd
Current assignee: Shenzhen Baiyuda Technology Co ltd
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2021-11-23
Anticipated expiration: 2031-04-08

Abstract

The utility model relates to a human body induction device and an advertising machine, wherein the human body induction device comprises a radar sensor, a signal receiver and a signal processing unit, wherein the radar sensor comprises a signal transmitter and a signal receiver; and the signal diffuser is positioned on a signal path transmitted by the signal transmitter, the signal diffuser comprises a first diffusion end, a second diffusion end and a third diffusion end, the second diffusion end is respectively connected with the first diffusion end and the third diffusion end, the first diffusion end comprises a first concave surface, the third diffusion end comprises a second concave surface, a signal transmitted by the signal transmitter can be refracted by the first concave surface and the second concave surface to increase an included angle with a horizontal line, the second diffusion end comprises a straight surface, the signal transmitted by the signal transmitter is horizontally emitted by the straight surface, and reflected signals at different positions of a human body are refracted into horizontal signals to the signal receiver by the first concave surface and the second concave surface. The human body induction device can increase the radar beam angle, enlarge the radar detection range and effectively detect the human body at each position.

Description

Human body induction device and advertising machine

Technical Field

The utility model relates to an induction system technical field especially relates to human induction system and advertisement machine.

Background

At present, most taxis are provided with small advertisement machines at armrest boxes, and the advertisement machines can monitor whether passengers are seated in the rear rows of the taxis through radars. As long as the passengers are detected to get on the bus, the advertisement machine can automatically play the advertisements.

As known, the width of a rear-row seat of a taxi is about 150cm, the distance between the backrest of the seat and an advertising machine is about 75cm, the angle of a currently used human body induction radar is about 80 degrees, and the range which can only cover about 120cm of the rear-row actually is calculated according to a trigonometric function. This can cause to be close to both sides door department and have the blind area, when the passenger was close to the door and takes a seat, can appear the unable condition that detects the human body of radar.

SUMMERY OF THE UTILITY MODEL

Therefore, the human body sensing device and the advertising machine are needed to be used for solving the problem that a blind area exists in a human body detected by a radar, and can be used for increasing the beam angle of the radar, expanding the detection range of the radar and effectively detecting the human body at each position.

A human body sensing device comprising:

the radar sensor comprises a signal transmitter and a signal receiver; and

the signal diffuser is located on the signal path of signal transmitter transmission, the signal diffuser includes first diffusion end, second diffusion end and third diffusion end, the second diffusion end respectively with first diffusion end the third diffusion end is connected, first diffusion end includes first concave surface, the third diffusion end includes the second concave surface, the signal that signal transmitter transmitted can pass through first concave surface reaches the contained angle of second concave surface refraction increase and horizontal line, the second diffusion end includes straight face, the signal that signal transmitter transmitted passes through straight face level jets out, the reflection signal warp of human different positions first concave surface the second concave surface refracts into horizontal signal extremely signal receiver.

Above-mentioned human induction system, the horizontal signal that signal transmitter sent can continue sharp transmission through the second diffusion end, other angle signals that signal transmitter sent can pass through first diffusion end, the refraction of third diffusion end, and increase the contained angle between signal transmission line and the water flat line, thereby realize passing through the signal diffuser diffusion back, the beam angle of the signal that signal transmitter sent is bigger, the detection range of coverage is wider, can be fine compensate the human response module's of on-vehicle radar blind area, can effectually detect the human body of each position, even the human body is taken a seat next to the door, also can detect. It should be noted that the beam angle is defined as an angle from the extension of the central axis of the sensor to the outside, where the energy intensity is reduced by half (-3dB), and is called as the beam angle.

In one embodiment, the signal diffuser is a concave lens. The concave lens has a divergence effect, and signals sent by the signal emitter belong to electromagnetic waves and have the same propagation direction and speed as light, so that the concave lens can more conveniently and effectively diverge the signals sent by the signal emitter and enlarge the beam angle of the radar.

In one embodiment, the radar sensor is located at a focal point of the concave lens. The signal transmitter can spread the signals transmitted from all angles to the maximum extent, so that the detection range is wider.

In one embodiment, the signal diffuser is a transparent plastic piece.

In one embodiment, the radar sensor includes a housing, the signal transmitter and the signal receiver are disposed on the housing, the signal diffuser is detachably disposed on the housing, and the signal diffuser is spaced apart from the signal transmitter.

In one embodiment, the radar sensor includes a housing, the signal transmitter and the signal receiver are disposed on the housing, the signal diffuser is integrally formed with the housing, and the signal diffuser is spaced apart from the signal transmitter.

In one embodiment, the concave radian of the first concave surface is the same as the concave radian of the second concave surface.

In one embodiment, the height of the first diffusion end is the same as the height of the second diffusion end.

In one embodiment, the signal emitter is located in the middle of the signal diffuser.

The utility model also provides an advertisement machine, include: the human body sensing device as described above; and the voice player is in wireless signal connection with the signal receiver. Since the advertisement machine comprises the human body sensing device, the advertisement machine at least comprises all the beneficial effects, which are not described herein again. The advertisement player can detect human bodies in a wider range through the human body sensing device, and the signal receiver can send signals to the voice player after receiving the human body detection signals, and the voice player can play advertisements in time.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the human body sensing device of the present invention;

fig. 2 is a schematic view of the sensing structure between the human body sensing device and the human body of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

100. a human body sensing device; 10. a radar sensor; 20. a signal diffuser; 21. a first diffusion end; 22. a second diffusion end; 23. a third diffusion end; 200. a human body.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It is apparent that the specific details set forth in the following description are merely exemplary of the invention, which can be practiced in many other embodiments that depart from the specific details disclosed herein. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 and 2, in an embodiment, a human body sensing device 100 includes: radar sensor 10 and signal diffuser 20. The radar sensor 10 includes a signal transmitter and a signal receiver. The signal diffuser 20 is located on a signal path emitted by the signal emitter, and the signal diffuser 20 includes a first diffusion end 21, a second diffusion end 22 and a third diffusion end 23, and the second diffusion end 22 is connected to the first diffusion end 21 and the third diffusion end 23 respectively. The first diffusion end 21 extends along the height direction and comprises a first concave surface, the third diffusion end 23 extends along the height direction and comprises a second concave surface, and the signal emitted by the signal emitter can be refracted by the first concave surface and the second concave surface to increase the included angle with the horizontal line. The second diffusion end 22 includes a flat surface through which the signal emitted by the signal emitter is emitted horizontally. The reflected signals of different positions of the human body 200 are refracted through the first concave surface and the second concave surface into horizontal signals to the signal receiver.

Referring to fig. 1 and 2, a horizontal signal emitted by the signal emitter of the human body sensing device 100 continues to be linearly transmitted through the second diffusion end 22, other angle signals emitted by the signal emitter are refracted through the first diffusion end 21 and the third diffusion end 23, and an included angle between a signal transmission line and a horizontal line is increased, so that after the signals are diffused through the signal diffuser 20, a beam angle of the signal emitted by the signal emitter is larger, a covered detection range is wider, a blind area of the vehicle-mounted radar human body sensing module can be well compensated, a human body 200 at each position can be effectively detected, and even if the human body 200 is seated next to a vehicle door, the human body 200 can be detected. It should be noted that the beam angle is defined as an angle from the extension of the central axis of the sensor to the outside, where the energy intensity is reduced by half (-3dB), and is called as the beam angle.

In practice, the signal diffuser 20 may be a concave lens and may be made of a transparent plastic. Particularly, the concave lens is made of ABS plastic materials, and the cost is lower. The concave lens has a divergence effect, and signals sent by the signal emitter belong to electromagnetic waves and have the same propagation direction and speed as light, so that the concave lens can more conveniently and effectively diverge the signals sent by the signal emitter and enlarge the beam angle of the radar.

In order to maximize the range of signals emitted from the signal emitter from various angles and to widen the detection range, the radar sensor 10 is located at the focal point of the concave lens.

In one embodiment, radar sensor 10 includes a housing, a signal transmitter and a signal receiver disposed on the housing, a signal diffuser 20 removably disposed on the housing, and signal diffuser 20 spaced from the signal transmitter.

In another embodiment, the radar sensor 10 includes a housing, a signal transmitter and a signal receiver are disposed on the housing, the signal diffuser 20 is integrally formed with the housing, and the signal diffuser 20 is spaced apart from the signal transmitter.

In the embodiment of the signal diffuser 20, the concave curvature of the first concave surface is the same as the concave curvature of the second concave surface, so as to ensure that the signal diffusing refraction angle is consistent whether passing through the first diffusing end 21 or the third diffusing end 23. The first diffusion end 21 may have the same height as the second diffusion end 22, and the signal emitter is located at the middle of the signal diffuser 20.

The utility model also provides an advertisement machine, include: the human body sensing device 100 as described above; and the voice player is in wireless signal connection with the signal receiver. Since the advertisement player includes the human body sensing device 100 as described above, the advertisement player at least includes all the above-mentioned advantages, which are not described herein again. The advertisement player can detect the human body 200 in a wider range through the human body sensing device 100, and after the signal receiver receives a detection signal of the human body 200, the signal receiver can send a signal to the voice player, and the voice player can play advertisements in time.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes, substitutions and improvements can be made, and all of them should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the claims.

Claims

1. A human body sensing device, comprising:

the radar sensor comprises a signal transmitter and a signal receiver; and

2. The body sensing device of claim 1, wherein the signal diffuser is a concave lens.

3. The human body induction device according to claim 2, wherein the radar sensor is located at a focal point of the concave lens.

4. The body sensing device of claim 1, wherein the signal diffuser is a transparent plastic piece.

5. The body sensing device according to claim 1, wherein the radar sensor includes a housing, the signal transmitter and the signal receiver are disposed on the housing, the signal diffuser is removably disposed on the housing, and the signal diffuser is spaced apart from the signal transmitter.

6. The body sensing device according to claim 1, wherein the radar sensor includes a housing, the signal emitter and the signal receiver are disposed on the housing, the signal diffuser is integrally formed with the housing, and the signal diffuser is spaced apart from the signal emitter.

7. The body sensing device of claim 1, wherein the first concave surface has the same concave curvature as the second concave surface.

8. The body sensing device according to claim 1, wherein the first diverging end has a height that is the same as a height of the second diverging end.

9. The body sensing device according to claim 1, wherein the signal emitter is located in a middle portion of the signal diffuser.

10. An advertising machine, comprising: the human body sensing device according to any one of claims 1 to 9; and the voice player is in wireless signal connection with the signal receiver.