Millimeter-wave radar system
By using millimeter-wave radar systems for sensing and data processing, the limitations of traditional environmental sensors have been addressed, enabling precise control and intelligent response of smart devices and enhancing the intelligence of environmental perception.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- KAIKUTEK INC
- Filing Date
- 2025-12-18
- Publication Date
- 2026-06-30
AI Technical Summary
Traditional environmental sensors have simple outputs and limited practicality, making it impossible to effectively utilize environmental data for precise control of smart devices.
Employing a millimeter-wave radar system, including a millimeter-wave radar sensor, an interactive device, and a control unit, the system operates the interactive device by processing environmental data, enabling precise measurement of the position, velocity, acceleration, and angle of both living and non-living objects, and adjusting the device status based on the sensing results.
It enables precise control and response of intelligent devices, enhances the intelligence of environmental perception and the adaptability of devices, and can perform corresponding device operations based on the presence, location, movement, gestures and postures of living and non-living objects.
Smart Images
Figure CN122307475A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a millimeter-wave radar system, and more particularly to a millimeter-wave radar system for environmental perception. Background Technology
[0002] Environmental sensing is a sensing technology that collects information about the surrounding environment. This information can be used for a variety of purposes, such as understanding the environment, providing information to users, or controlling devices.
[0003] In environmental sensing, a whole group of environmental sensors work together to provide environmental information. In principle, almost any type of sensor can be calibrated as an environmental sensor. Some common environmental sensors include temperature sensors, pressure sensors, water sensors, and object sensors.
[0004] Temperature sensors continuously monitor indoor temperature, and the sensed average temperature can be used to indicate whether the home is maintaining a comfortable temperature. Pressure sensors can be used in conjunction with temperature sensors to generate sensing results of weather conditions around the home. Water sensors can provide information about humidity levels in the home. Object sensors (with RFID tags or GPS trackers) can be placed on key objects or users to provide sensing results about the user and their movements. However, traditional environmental sensors have limited practicality due to their simple output; therefore, a millimeter-wave radar system for environmental sensing is needed. Summary of the Invention
[0005] This invention provides a millimeter-wave radar system, including a millimeter-wave radar sensor, an interactive device, and a control unit. The millimeter-wave radar sensor is used to sense environmental data. The control unit is coupled to the millimeter-wave radar sensor and the interactive device to process the environmental data and operate the interactive device based on the environmental data. Attached Figure Description
[0006] Figure 1 This is a block diagram of a millimeter-wave radar system in an embodiment of the present invention.
[0007] Figure 2 This is a schematic diagram of a millimeter-wave radar system according to an embodiment of the present invention.
[0008] Figure 3 This is a schematic diagram of the response of a millimeter-wave radar system to environmental perception in another embodiment of the present invention.
[0009] List of reference numerals
[0010] 10: Millimeter-wave radar system
[0011] 12: Interactive devices
[0012] 14: Millimeter-wave radar sensor
[0013] 16: Control Unit
[0014] 18: Rotary motor Detailed Implementation
[0015] Millimeter-wave (mmWave) sensing is a non-contact technology that uses millimeter-wave radar sensors to measure position, velocity, acceleration, and angle with millimeter-level accuracy. Millimeter-wave radar systems operate by emitting and receiving millimeter-wave electromagnetic pulses or continuous waves, detecting targets and motion from reflected signals. Additional components such as converters, signal processors, and other embedded technologies enhance the performance of millimeter-wave radar systems and open up new applications. Current applications of millimeter-wave radar technology include tracking human and animal movement, detecting human presence, and monitoring vital signs. These applications span multiple industries, including automotive, meteorology, healthcare, and pet health, and often serve as an alternative to wearable technologies.
[0016] Compared to other radio frequency sensing technologies in the electromagnetic spectrum, such as infrared or ultrawideband, millimeter waves operate in the 10 GHz to 100 GHz range. Typical millimeter wave sensors use the 24 GHz, 60 GHz, and 77 GHz bands, each offering unique advantages for specific applications.
[0017] Figure 1 This is a block diagram of a millimeter-wave radar system 10 according to an embodiment of the present invention. The millimeter-wave radar system 10 may include an interactive device 12, a millimeter-wave radar sensor 14, and a control unit 16; the interactive device 12 may include a rotary motor 18. The millimeter-wave radar sensor 14, the control unit 16, and the rotary motor 18 may be arranged inside the interactive device 12. The control unit 16 may be connected to the millimeter-wave radar sensor 14, the rotary motor 18, and the interactive device 12. The millimeter-wave radar sensor 14 is used to detect environmental data, and the control unit 16 is used to process the environmental data and operate the interactive device 12 according to the environmental data. In one embodiment, the environmental data includes the heart rate, respiratory rate, gestures, posture, position, and / or speed of an organism. In another embodiment, the environmental data includes the position and / or speed of a non-living object.
[0018] In one embodiment, the control unit 16 adjusts the rotation motor 18 based on environmental data to change the orientation of the interactive device 12. For example, the interactive device 12 is a smart fan; the millimeter-wave radar sensor 14 senses the user's position, and the control unit 16 can adjust the rotation motor 18 to point the smart fan at the user. In another example, the interactive device 12 is a spatial speaker; the millimeter-wave radar sensor 14 senses the user's position, and the control unit 16 can adjust the spatial speaker to ensure sound surrounds the user. In yet another embodiment, the millimeter-wave radar sensor 14 senses the position of a non-living object, and the control unit 16 can adjust the interactive device 12 based on the position of the non-living object.
[0019] In one embodiment, the millimeter-wave radar system 10 may include an interactive device 12, a millimeter-wave radar sensor 14, and a control unit 16, while the interactive device 12 does not include a rotary motor 18. The millimeter-wave radar sensor 14 and the control unit 16 may be disposed inside the interactive device 12. The control unit 16 may be connected to the millimeter-wave radar sensor 14 and the interactive device 12. In one embodiment, the control unit 16 turns the interactive device 12 on or off based on environmental data. For example, the interactive device 12 is a smart TV; the millimeter-wave radar sensor 14 senses the user's gestures or postures, and the control unit 16 can adjust or turn the smart TV on / off based on the sensed gestures or postures. In another embodiment, the interactive device 12 is an electric door; the millimeter-wave radar sensor 14 senses the user's gestures or postures, and the control unit 16 can open or close the electric door based on the sensed gestures or postures. In yet another embodiment, the interactive device 12 is an air conditioner; the millimeter-wave radar sensor 14 senses a user's gestures or postures, and the control unit 16 can adjust or turn the air conditioner on / off based on the sensed gestures or postures. In another embodiment, the millimeter-wave radar sensor 14 senses the position and / or movement of a non-living object, and the control unit 16 can turn the interactive device 12 on or off according to the position and / or movement of the non-living object.
[0020] In one embodiment, environmental data includes the organism's heart rate, respiratory rate, gestures, posture, position, and / or speed. Therefore, the millimeter-wave radar sensor 14 can sense the user's presence, position, movement, gestures, and / or posture. The control unit 16 can adjust the interactive device 12 based on the user's presence, position, movement, gestures, and / or posture sensed by the millimeter-wave radar sensor 14.
[0021] Figure 2This is a schematic diagram of a millimeter-wave radar system 10 according to an embodiment of the present invention. The millimeter-wave radar system 10 includes n transmitters and n receivers (Rx1 to Rxn). In one embodiment, the n transmitters transmit frequency-modulated continuous wave (FMCW) signals, which are reflected from a target (e.g., a human) to generate reflected FMCW signals. The reflected FMCW signals are then received by a plurality of receivers Rx1 to Rxn to generate n received FMCW signals.
[0022] The received FMCW signal has a delay relative to the transmitted FMCW signal. Therefore, the distance to the target can be analyzed by calculating the frequency difference between each received FMCW signal and the transmitted FMCW signal. The distance to the target refers to the distance between the target and the array antenna of the millimeter-wave radar system 10. Next, the phase difference between different triangular waves of the received FMCW signal can be analyzed to calculate the velocity of the target. Furthermore, the phase difference between different receivers Rx1 to Rxn can be analyzed to calculate the angle of arrival (AoA) of the target. AoA is the angle from the target to the array antenna of the millimeter-wave radar system 10. The array antenna may include n antenna elements for n transmitters and n receivers. In one embodiment, the transmission and reception of FMCW signals from the array antenna of the millimeter-wave radar system 10 can be used to calculate the distance, velocity, and angle of the target. In another embodiment, the millimeter-wave radar system 10 transmits and receives pulse waves to generate the distance, velocity, and angle of the target.
[0023] In one embodiment, environmental data includes the organism's heart rate, respiratory rate, gestures, posture, position, and / or speed. The control unit 16 can use a machine learning model to adjust the interactive device 12 based on the sensed presence, position, movement, gestures, and / or posture. The machine learning model is trained based on the environmental data and the analysis results of the environmental data. The machine learning model can be applied to environmental perception based on the millimeter-wave radar sensor 14.
[0024] Figure 3 This is a schematic diagram illustrating the response of a millimeter-wave radar system 10 to environmental perception in another embodiment of the present invention. Figure 3In the scenario, there are four users in the environment: User 1 is making a gesture, User 2 is standing, User 3 is sitting, and User 4 is sleeping. Millimeter-wave radar sensor 14 senses the environmental data of users 1 to 4. The analysis results may include User 1 making a gesture at position (x1, y1, z1), User 2 standing at position (x2, y2, z2), User 3 sitting at position (x3, y3, z3), and User 4 sleeping at position (x4, y4, z4). Control unit 16 adjusts interactive device 12 to respond to the analysis results. A gesture made by user 1 at location (x1, y1, z1) may trigger the control of a smart TV, air conditioner, electric door, smart lighting, security monitoring system, and / or other smart devices. A user standing at location (x2, y2, z2) may be detected by millimeter-wave radar sensor 14, and control unit 16 may adjust the smart fan, air conditioner, ambient sound system, and / or other smart devices accordingly. A user sitting at location (x3, y3, z3) may be detected by millimeter-wave radar sensor 14, and control unit 16 may adjust the smart fan, air conditioner, ambient sound system, and / or other smart devices accordingly. A user sleeping at location (x4, y4, z4) may be detected by millimeter-wave radar sensor 14, and control unit 16 may adjust the smart fan, air conditioner, ambient sound system, and / or other smart devices accordingly. In one embodiment, users 1 to 4 may be sensed by one or more millimeter-wave radar systems 10 to adjust interactive devices 12 or more interactive devices 12. The number of millimeter-wave radar systems 10 and the number of interactive devices 12 can be any integer, and are not limited in this invention.
[0025] In summary, the millimeter-wave radar system 10 senses and processes environmental data to adjust the interactive device 12 based on the environmental data, and the millimeter-wave radar sensor 14 can sense the heart rate, respiratory rate, presence, location, movement, gestures and / or posture of an organism, thereby enabling the interactive device to respond to the presence and behavior of the organism.
[0026] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made in accordance with the claims of the present invention should be included within the scope of the present invention.
Claims
1. A millimeter-wave radar system, comprising: A millimeter-wave radar sensor is used to sense environmental data; An interactive device; and A control unit, coupled to the millimeter-wave radar sensor and the interactive device, is used to process the environmental data and operate the interactive device based on the environmental data.
2. The millimeter-wave radar system of claim 1, wherein the environmental data includes the heart rate, respiratory rate, gestures, posture, position, and / or speed of a living object.
3. The millimeter-wave radar system of claim 1, wherein the environmental data includes the position and / or velocity of a non-living object.
4. The millimeter-wave radar system of claim 1, wherein the interactive device includes a rotary motor.
5. The millimeter-wave radar system of claim 4, wherein the control unit adjusts the rotary motor based on the environmental data.
6. The millimeter-wave radar system of claim 5, wherein the rotary motor is used to adjust the rotation direction of the interactive device according to the environmental data.
7. The millimeter-wave radar system of claim 6, wherein the environmental data includes the heart rate, respiratory rate, gestures, posture, position, and / or speed of a living object.
8. The millimeter-wave radar system of claim 6, wherein the environmental data includes the position and / or velocity of a non-living object.
9. The millimeter-wave radar system of claim 1, wherein the control unit turns the interactive device on or off based on the environmental data.
10. The millimeter-wave radar system of claim 9, wherein the environmental data includes the heart rate, respiratory rate, gestures, posture, position, and / or speed of a living object.
11. The millimeter-wave radar system of claim 9, wherein the environmental data includes the position and / or velocity of a non-living object.
12. The millimeter-wave radar system of claim 1, wherein the interactive device is a smart fan, a smart TV, a spatial audio system, an air conditioner, a smart lighting system, a security monitoring system, or an electric door.
13. The millimeter-wave radar system of claim 1, wherein the control unit processes the environmental data according to a machine learning model and operates the interactive device according to the environmental data.
14. The millimeter-wave radar system of claim 1, wherein the millimeter-wave radar sensor transmits a plurality of frequency-modulated continuous wave signals and receives a plurality of reflected frequency-modulated continuous wave signals.
15. The millimeter-wave radar system of claim 14, wherein the control unit generates the distance, velocity, and angle of an object based on the plurality of reflected frequency-modulated continuous wave signals.