CN220438547U - 24GHz human-sensing radar device and display screen - Google Patents
24GHz human-sensing radar device and display screen Download PDFInfo
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- CN220438547U CN220438547U CN202322016672.9U CN202322016672U CN220438547U CN 220438547 U CN220438547 U CN 220438547U CN 202322016672 U CN202322016672 U CN 202322016672U CN 220438547 U CN220438547 U CN 220438547U
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Abstract
The utility model discloses a 24GHz human-sensing radar device and a display screen. The radar device comprises a 24GHz radar Soc circuit, a transmitting-receiving microstrip antenna, an interface circuit and a power supply circuit, and the components are integrated on a millimeter wave radar board. The one-transmitting one-receiving microstrip antenna, the interface circuit and the power supply circuit are all connected with a 24GHz radar Soc circuit; the transmitting and receiving microstrip antennas are symmetrically arranged on two sides of the 24GHz radar Soc circuit; the power supply circuit is connected with the 24GHz radar Soc circuit and provides a linear voltage stabilizing function to supply power to the 24GHz radar Soc circuit; a display screen comprises the 24GHz human-sensing radar device. The electromagnetic wave emitted by the radar device can penetrate through the plastic shell of the display screen, does not need to be perforated, and is easy to install and use. The method does not relate to user privacy and is convenient to apply in home or office places.
Description
Technical Field
The utility model belongs to the fields of display technology and millimeter wave radar, and particularly relates to a 24GHz human-sensing radar device and a display screen.
Background
With the benefit of the progress of policies, markets and technologies, large-size display screens gradually move from professional display fields such as security, traffic, advertisements and the like into commercial and household display fields such as home, meeting rooms, exhibition halls and the like. The television with the large screen can bring better watching experience at home; the movable display screen used in the office place can be used for putting in a computer screen and also can be used as an erasable white board, so that the conference efficiency is improved.
Unlike security, advertising, etc., professional display areas, home and commercial display screens do not need 24 hours of uninterrupted power on, but require manual operation for power off or standby. After the meeting or the showing is finished, the phenomenon that the display screen is forgotten to be closed due to communication and discussion often happens, and direct economic loss and waste of electric power energy are brought. At this time, a sensing device is required to judge whether the display screen is in an unmanned state for a long time, and notify the display screen to enter a shutdown or standby state when the condition is satisfied.
In exhibition halls or similar public places, searching for a remote controller or opening a display screen by a power switch can reduce interaction experience, and a sensing device can be used for judging a fixed gesture to wake up the display screen, so that user experience is improved. Limited by size, cost and installation mode, few display screen installation sensing devices realize the function of saving electricity or waking up.
Along with the progress of millimeter wave radar technology and the industrialization landing under certain application scenes, 24GHz millimeter wave radar technology is mature day by day, and 1-transmission 1-reception range speed measuring radar module cost can be reduced to 10 yuan magnitude, and is just a good opportunity for landing in the application scenes.
Compared with ultrasonic and infrared sensors, the 24GHz millimeter wave radar has the characteristic of all-weather operation in the whole day, and has great advantages in operation reliability and detection distance. Compared with the 60GHz or 77HzG millimeter wave radar, the 24GHz millimeter wave radar can reliably detect the target and simultaneously reduce the cost when the application scene does not need imaging or complex gesture recognition functions.
The 24GHz millimeter wave radar is developed aiming at the application scene of the display screen, so that the energy consumption can be reduced, the user experience is improved, and meanwhile, the method is also assisted in the industrialization landing of the millimeter wave radar.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a miniaturized and low-cost 24GHz human-induced radar device and a display screen so as to solve the problems of electric power energy waste, user experience and the like in the prior art. The radar device can detect the personnel in standing, walking and sitting states, eliminates the interference of micro-motion objects such as curtains and the like through logic judgment, provides reliable personnel existence detection results, and reduces the probability of false alarm and missing alarm. Meanwhile, the gesture wake-up function is realized through detection of the distance threshold and the speed direction, the non-contact operation is realized, and the user experience is improved. The size of the narrow side of the radar module in the device is only 6mm, and the cost is 10 yuan.
In order to achieve the above object, the present utility model is realized by the following technical scheme:
a24 GHz human-sensing radar device comprises a 24GHz radar Soc circuit, a transmitting-receiving microstrip antenna, an interface circuit and a power supply circuit, wherein the components are integrated on a millimeter wave radar board. The one-transmitting one-receiving microstrip antenna, the interface circuit and the power supply circuit are all connected with a 24GHz radar Soc circuit; the transmitting and receiving microstrip antennas are symmetrically arranged on two sides of the 24GHz radar Soc circuit; the power supply circuit is connected with the 24GHz radar Soc circuit and provides a linear voltage stabilizing function to supply power to the 24GHz radar Soc circuit; the interface circuit can provide the functions of a power supply and a communication interface, is used for providing power supply input for the radar access display screen, and simultaneously outputs dormancy and wake-up signals provided by the radar to the display screen.
After the human-sensing radar device is powered on, a 24GHz radar Soc circuit generates a 24-24.25 GHz linear frequency modulation signal, and the echo signal is received and processed to obtain target distance and speed information.
Further, the one-transmission one-reception microstrip antenna is slotted on the microstrip patch.
Further, the width of the slot is 0.9-1.0 mm, and the distance between the feeding point and the edge of the patch is 0.8-0.9 mm.
Further, the millimeter wave radar board adopts a narrow side design, and the size of the narrow side is 6-8 mm.
Further, the microstrip antenna is in a square microstrip patch antenna form, and the size of the microstrip antenna is 3mm x 3mm.
Furthermore, the utility model also provides a display screen, which comprises the 24GHz human-sensing radar device, wherein the 24GHz human-sensing radar device is arranged in the frame at the lower side of the display screen through the inner buckle of the display screen and the supporting table structure.
Further, the width of the supporting table structure is 0.7-0.9 mm, and the avoidance size of the corresponding position of the millimeter wave radar board is 1.1-1.3 mm.
Further, the size of the millimeter wave radar board is clamped and pressed in the display screen to be 2.4-2.6 mm, and the avoidance size of the corresponding position of the millimeter wave radar board is 2.9-3.1 mm.
The utility model has the beneficial effects that: according to the 24GHz human-sensing radar device and the display screen, electromagnetic waves emitted by the radar device can penetrate through the plastic shell of the display screen without opening holes, the 24GHz radar Soc circuit and square microstrip patch antenna hardware architecture is adopted, the minimum size of the narrow side can be only 6mm, and the device is easy to install and use. Meanwhile, the millimeter wave radar does not relate to user privacy, and is convenient to apply in home or office places. The radar device realizes the intelligent standby function of the display screen by reliably detecting the existence state of personnel, and reduces the waste of electric power energy.
Drawings
FIG. 1 is a block diagram showing a 24GHz human-induced radar apparatus according to embodiment 1 of the present utility model;
fig. 2 is a schematic diagram of a display screen structure according to embodiment 2 of the present utility model.
The labels in the figures are as follows:
1. 24GHz radar Soc circuit 21 and transmitting antenna
22. Receiving antenna 3, interface circuit
4. Power management circuit 5 and display screen inner clip
6. Supporting table structure
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more clear, the present utility model will be described in further detail with reference to the following examples and the accompanying drawings. The scope of the utility model is not limited to the following.
Example 1
As shown in FIG. 1, the 24GHz human-sensing radar device consists of a millimeter wave radar board, and comprises a 24GHz radar Soc circuit 1, a receiving and transmitting microstrip antenna (namely a transmitting antenna 21 and a receiving antenna 22), an interface circuit 3 and a power management circuit 4. The transmitting antenna 21 and the receiving antenna 22 are symmetrically arranged on two sides of the 24GHz radar Soc circuit 1; the power management circuit 4 is connected with the 24GHz radar Soc circuit 1 and provides a linear voltage stabilizing function to supply power to the 24GHz radar Soc circuit 1; the interface circuit 3 can provide the functions of a power supply and a communication interface, and is used for supplying power to the radar access display screen and outputting dormancy and wake-up signals provided by the radar to the display screen.
After the 24GHz radar Soc circuit 1 is powered on, a 24-24.25 GHz linear frequency modulation signal is generated, and the echo signal is received and processed by the 24GHz radar Soc circuit 1 to obtain target distance and speed information. Judging whether personnel exist or not through a threshold on the basis, wherein the specific judgment logic in the example is that under the condition that the target detection distance is 0.1 m-5 m, the signal energy value is more than 2000, the signal to noise ratio is more than 10dB, and 7 frames in the 10-frame signal processing result meet the three judgment conditions; if yes, uploading the detection result of the existence of the personnel to a display screen main board through an interface circuit 3 to wake up a display screen; if not, when no person exists for more than 10s, the interface circuit 3 informs the display screen to enter a standby state.
The transmitting antenna 21 and the receiving antenna 22 are square microstrip patch antennas, the number of antenna units is 1, and the function of detecting the wide beam of +/-60 degrees is realized; the square microstrip patch antenna in this example has a size of 3mm by 3mm, so as to reduce the narrow side size of the millimeter wave radar board. The transmitting antenna 21 and the receiving antenna 22 are grooved on the microstrip patch, grooves with the width of 0.91mm are formed on the microstrip patch, a feeder line extends into the middle of the patch for feeding, and the distance between a feeding point and the edge of the patch is 0.85mm, so that the standing wave performance of the antenna is optimized, and the working bandwidth of the antenna is expanded.
The 24GHz radar Soc circuit 1, the transmitting antenna 21, the receiving antenna 22, the interface circuit 3 and the power management circuit 4 are arranged on the same millimeter wave radar board, and the narrow side design is adopted, and in the example, the narrow side size of the millimeter wave radar board is 6mm.
As shown in fig. 2, the 24GHz human-sensing radar apparatus is mounted in the lower side frame of the display screen through the in-screen fastener 5 and the supporting table structure 6. And during installation, the 24G human-sensing radar device is pressed down and slid into the display screen to be clamped, so that the installation is completed. In the embodiment, the width of the supporting table structure is 0.8mm, and the avoidance (layout and wiring inhibition) size of the corresponding position of the millimeter wave radar board and the supporting table contact surface is 1.2mm. In the embodiment, the size of the millimeter wave radar board is 2.5mm when the millimeter wave radar board is buckled in the display screen, and the avoidance size of the corresponding position of the millimeter wave radar board and the buckle contact surface is 3mm.
The circuits are all commercially available devices, and the preferred embodiment is as follows: the 24GHz radar Soc circuit model RC2412_V1.3 and the power management circuit model AMS1117-3.3.
Further, the human-sensing radar device with the 24GHz display screen, which is used for removing interference logic of micro-motion objects such as curtains, comprises the following steps: the distance information R of the display screen and the curtain is preloaded in a 24GHz radar Soc circuit, and when the radar device detects, a detection target within the range of 0.2m of the specified distance R is not judged, so that the interference of micro-motion objects such as the curtain is removed.
Further, according to the 24GHz display screen human-sensing radar device, a wake-up function is realized by detecting distance information and speed direction information of a target. After the 24GHz human-sensing radar device sends out a display screen standby signal and detects that a target enters a set distance threshold (the distance threshold is 0.5m in the example), the speed direction of the target is detected, and after the speed directions of the target approaching to and leaving from the display screen are sequentially detected, the display screen is judged to be a combined gesture under the condition that the absolute value of the speed is more than 0.8m/s, and the display screen is awakened.
The device eliminates interference of micro-motion objects such as curtains and the like through preassembling the distance between the display screen and the curtains, does not judge logic corresponding to the distance target during processing, and improves the existence detection reliability of personnel. The radar device realizes the intelligent standby function of the display screen by reliably detecting the existence state of personnel, and reduces the waste of electric power energy. The device realizes the gesture wake-up function of the display screen through judging the direction of the distance threshold acceleration, and improves the use experience of users.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that the specific embodiments described are illustrative only and not intended to limit the scope of the utility model, and that equivalent modifications and variations of the utility model in light of the spirit of the utility model will be covered by the claims of the present utility model.
Claims (8)
1. A 24GHz human-sensing radar device, characterized by: the antenna comprises a 24GHz radar Soc circuit, a transmitting-receiving microstrip antenna, an interface circuit and a power supply circuit, wherein the components are integrated on a millimeter wave radar board; the one-transmitting one-receiving microstrip antenna, the interface circuit and the power supply circuit are all connected with a 24GHz radar Soc circuit; the transmitting and receiving microstrip antennas are symmetrically arranged on two sides of the 24GHz radar Soc circuit; the power supply circuit is connected with the 24GHz radar Soc circuit.
2. A 24GHz human-sensing radar apparatus according to claim 1, wherein: the one-transmitting one-receiving microstrip antenna is slotted on the microstrip patch.
3. A 24GHz human-sensing radar apparatus according to claim 2, wherein: the width of the slot is 0.9-1.0 mm, and the distance between the feeding point and the edge of the patch is 0.8-0.9 mm.
4. A 24GHz human-sensing radar apparatus according to claim 1, wherein: the millimeter wave radar board adopts a narrow side design, and the size of the narrow side is 6-8 mm.
5. A 24GHz human-sensing radar apparatus according to claim 1, wherein: the microstrip antenna is in a square microstrip patch antenna form, and the size of the microstrip antenna is 3mm x 3mm.
6. A display screen, characterized in that: the display screen comprises the 24GHz human-induced radar device as in any one of claims 1-5, wherein the 24GHz human-induced radar device is mounted in the lower side frame of the display screen through the inner buckle and the supporting table structure of the display screen.
7. A display screen as recited in claim 6, wherein: the width of the supporting table structure is 0.7-0.9 mm, and the avoidance size of the corresponding position of the millimeter wave radar board is 1.1-1.3 mm.
8. A display screen as recited in claim 6, wherein: the size of the millimeter wave radar board is 2.4-2.6 mm, and the avoidance size of the corresponding position of the millimeter wave radar board is 2.9-3.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322016672.9U CN220438547U (en) | 2023-07-30 | 2023-07-30 | 24GHz human-sensing radar device and display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322016672.9U CN220438547U (en) | 2023-07-30 | 2023-07-30 | 24GHz human-sensing radar device and display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220438547U true CN220438547U (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322016672.9U Active CN220438547U (en) | 2023-07-30 | 2023-07-30 | 24GHz human-sensing radar device and display screen |
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| Country | Link |
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| CN (1) | CN220438547U (en) |
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2023
- 2023-07-30 CN CN202322016672.9U patent/CN220438547U/en active Active
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