CN216696673U

CN216696673U - Old man's action monitoring system based on millimeter wave radar

Info

Publication number: CN216696673U
Application number: CN202122496081.7U
Authority: CN
Inventors: 张强胜; 吴大军; 张钦尧; 刘峰
Original assignee: Suzhou Milite Intelligent Technology Co ltd
Current assignee: Suzhou Milite Intelligent Technology Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-06-07
Anticipated expiration: 2031-10-15

Abstract

The utility model provides an old man behavior monitoring system based on a millimeter wave radar, which comprises a radar monitoring terminal, wherein the radar monitoring terminal is respectively connected with a radar unit for judging the action condition of a human body, a cellular communication unit for long-distance data transmission, a local area network communication unit for data intercommunication among different monitoring systems and a power supply unit for supplying power to the system; the cellular communication unit is used for uploading feedback data of the radar monitoring terminal to the cloud server, and the cloud server is connected with a smart cloud platform used for providing a house model. The utility model can monitor the indoor activities of the old people all day without wearing sensing equipment and without being influenced by light.

Description

Old man's action monitoring system based on millimeter wave radar

Technical Field

The utility model relates to the technical field of old people behavior monitoring based on a millimeter wave radar, in particular to an old people behavior monitoring system based on the millimeter wave radar.

Background

The doppler effect, which means that the wavelength of the object radiation changes due to the relative motion of the light source and the observer. The accident falling event of 2500 ten thousand of the old people at home occurs every year in China. The scene of the highest falling rate is 3-6 points in the morning, and the bedside (falling bed) accounts for 54%; secondly, the daily activities of the old people account for 28 percent in bathrooms and toilets, while the daily activities of the old people account for 18 percent, and bedrooms, toilets and bathrooms are the highest risk places for the old people to fall down.

However, in the prior art, sensing equipment is usually worn on the body of the old, and the sensing equipment detects the condition of the old, so that the method needs the old to wear the sensing equipment all the time, and the normal life of the old is influenced; when the monitoring method is used for monitoring, the monitoring continuity is influenced by the influence of light.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a millimeter wave radar-based behavior monitoring system for an elderly person, which can monitor indoor activities of the elderly person all day without wearing a sensing device and without being affected by light.

In order to solve the technical problems, the utility model adopts the technical scheme that:

the old man behavior monitoring system based on the millimeter wave radar comprises a radar monitoring terminal, wherein the radar monitoring terminal is respectively connected with a radar unit for judging the action condition of a human body, a cellular communication unit for long-distance data transmission, a local area network communication unit for data intercommunication among different monitoring systems and a power supply unit for supplying power to the system;

the cellular communication unit is used for uploading feedback data of the radar monitoring terminal to the cloud server, and the cloud server is connected with a smart cloud platform used for providing a house model.

Furthermore, the radar unit comprises a radar detector, the radar detector comprises a transmitting antenna and a plurality of receiving antennas, and the receiving antennas are arranged in parallel.

Further, the power supply unit comprises a super capacitor for storing electric energy.

Further, the radar monitoring terminal comprises a U5 processing chip for processing data and giving feedback, and the U5 processing chip is electrically connected with a U1 communication interface for connecting with a cellular communication unit, a U4 communication interface and a U6 communication interface for connecting with a radar unit, and a U2 modulation interface for connecting with a modulator.

Further, the radar unit comprises a U2 detection chip for acquiring millimeter wave data, the output end of the U2 detection chip is connected with a U4 processing chip for determining the action condition of the old, and the U4 processing chip is connected with a J1 communication interface for connecting with the U5 processing chip.

Further, the cellular communication unit comprises a U4A communication chip, and a U3 chip for connecting a mobile network and an E1 antenna for data transmission are connected to the U4A communication chip.

Further, the local area network communication unit comprises a U1 communication chip, and an ANT antenna for data transmission is connected to the U1 communication chip.

Furthermore, the power supply unit comprises a U3 voltage regulating chip, and the input end of the U3 voltage regulating chip is connected with a J2 power-on serial port.

Further, the monitoring system is integrally installed in the small household appliance.

Further, the household appliance comprises a desk lamp base, a socket or a bulb.

The utility model has the advantages and positive effects that:

the monitoring system is integrally installed in a small household appliance, the transmitting antenna of the radar unit emits directional millimeter waves, the millimeter waves are received by the receiving antenna after being reflected by indoor articles and old people, the radar unit determines the indoor position, action state and moving speed of the old people according to the received millimeter waves, the action state of the old people is transmitted to the radar monitoring terminal by the radar unit, the radar monitoring terminal gives feedback on whether the old people fall down according to the action state of the old people and transmits the feedback to the cloud server through the cellular communication unit, the cloud server is combined with a house model to further judge whether the old people fall down, in the whole detection process, the old people do not need to wear any equipment, the monitoring system is installed in the household appliance and detects through the millimeter waves without a camera, the old people do not have a monitored feeling, and the propagation of the millimeter waves is not influenced by light rays, the indoor activity condition of the old can be monitored all day.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

fig. 1 is a system diagram of an elderly behavior monitoring system based on millimeter wave radar of the present invention;

FIG. 2 is a circuit diagram of a radar monitoring terminal of the millimeter wave radar-based elderly behavior monitoring system of the present invention;

FIG. 3 is a circuit diagram of a radar unit of the millimeter wave radar-based elderly behavior monitoring system of the present invention;

fig. 4 is a circuit diagram of a portion of a cellular communication unit of the millimeter wave radar-based elderly behavior monitoring system of the present invention;

fig. 5 is a circuit diagram of a portion of a cellular communication unit of the millimeter wave radar-based elderly behavior monitoring system of the present invention;

FIG. 6 is a circuit diagram of a power supply unit of the millimeter wave radar-based elderly behavior monitoring system of the present invention;

fig. 7 is a circuit diagram of a local area network communication unit of the millimeter wave radar-based elderly behavior monitoring system of the present invention;

fig. 8 is a schematic layout diagram of an embodiment of the system and method for monitoring the behavior of the elderly people based on millimeter wave radar in the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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 a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

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 utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model provides an old man behavior monitoring system based on a millimeter wave radar, which comprises a radar monitoring terminal used for judging whether old man falls down or not, wherein the radar monitoring terminal is respectively connected with a radar unit used for determining the action condition of the old man, a cellular communication unit used for long-distance wireless transmission, a local area network communication unit used for short-distance data intercommunication and a power supply unit used for providing low-voltage direct current.

The radar unit comprises a transmitting antenna which can continuously emit directional millimeter waves and a receiving antenna which receives the reflected millimeter waves. The radar unit determines the action condition of the old people according to the received millimeter wave data, namely the position, the moving speed, the action condition and the like of the old people. Preferably, the number of the receiving antennas is not less than one, and the receiving antennas are arranged in parallel and in a row. So as to obtain the phase difference of the same reflected millimeter wave on different receiving antennas, and further calculate the direction of the reflection point, so as to determine the position of the old.

In practical use, because the detection range of one monitoring system is limited, different rooms are required to be provided with one monitoring system. For example, a monitoring system is respectively arranged in a living room and a bedroom and is used for determining the activity condition of the old people in the living room or the bedroom respectively. The local area network communication unit is used for enabling the monitoring systems in the living room and the bedroom to carry out data intercommunication, obtaining disappearance time data of the old people from the monitoring area of the living room and time data of the old people entering the monitoring area of the bedroom, facilitating obtaining the staying time of the old people in the monitoring blind area, and determining the logic rule whether the moving track of the old people is complex or not.

The radar monitoring terminal acquires data of the radar unit and the local area network communication unit and generates a first logic rule. The radar monitoring terminal carries out first logic operation according to the acquired data, judges whether the moving condition of the old people meets a first logic rule or not, and determines the falling condition of the old people; when the old man is in the blind area position of monitoring area, radar monitor terminal takes notes the position that the old man disappears (different disappearance positions correspond to different monitoring blind areas) and the time of disappearing, if the old man is after the time of staying at the monitoring blind area exceeds the time that first logic rule set for, radar monitor terminal still does not receive old man's activity data, judges promptly that the old man falls down. Even if the indoor environment is complicated, there are many control dead angles, monitoring system still can carry out the whole day control to old man's the condition of falling down.

The cellular communication unit is used for long-distance wireless remote data transmission (the cellular communication unit comprises an 2/3/4/5G wireless network), and uploads feedback given by the radar monitoring terminal, radar unit detection data and local area network communication unit data to the cloud server. The cloud server records the moving condition of the old people and updates the second logic rule for recording the moving condition of the old people at regular time. Because the living habits of people are different along with the time, the logic rules in the cloud server are changed correspondingly, for example, a massage chair is added in the family of the old, and the stay time of the old on the massage chair is increased, namely, the new habit is obtained.

The cloud server carries out second logic operation according to the acquired data, whether the old people fall down is further judged, if the old people are still judged to fall down, the cloud server sends alarm information to a monitoring terminal (on the mobile phone of the family or children of the old people), the monitoring terminal contacts a third party customer service, and the third party customer service is sent to a worker to check the old people, so that whether the old people are safe is determined.

The cloud server and a smart cloud platform for providing the house models are in data intercommunication, when the intelligent monitoring system is used, the monitoring end selects the house models with the same layout as the house of the user in the smart cloud platform, and monitoring systems in different rooms correspond to the types of the rooms. The cloud server draws an operation route of the old people according to the moving path of the old people, wherein the operation route comprises the stay time of the old people in corresponding rooms in different time periods and the disappearance time interval of the monitoring blind area, the second logic rule is supplemented and perfected, and the probability of false alarm is effectively reduced.

In order to facilitate the installation of the detector, the detector can be miniaturized and installed in a household appliance. In order to ensure the installation and the working stability of the monitoring system, the monitoring system is integrally installed in small electric appliances which are frequently used in daily life but do not need to be frequently moved, such as a desk lamp, a plug board or a bulb. Old man forgets easily, forgets easily and charges, and domestic appliance such as desk lamp, picture peg or bulb are direct and domestic circuit intercommunication, need not charge, conveniently use for the old man. And the desk lamp, the plug board or the bulb are small in size and convenient to mount and can be placed at any desired position.

As shown in fig. 6, the power supply unit includes a U3 voltage regulation chip, the input end of the U3 voltage regulation chip is connected with a J2 power-on serial port, the J2 power-on serial port is connected with a household circuit, and the U3 voltage regulation chip converts household alternating current into low-voltage direct current power supply to supply power to the whole monitoring system. Preferably, AMS1117 is selected as the U3 voltage regulation chip. As shown in fig. 2. The radar monitoring terminal comprises a U5 processing chip which is used for data processing and feedback, and preferably, the model can be PIC18F26K 80.

When the desk lamp is frequently turned on or the plugboard is used at high power, the desk lamp or the household plugboard is unstable in power supply, so that the power supply of a power supply is unstable and the data transmission is influenced. The U3 voltage regulation chip can be replaced by a super capacitor, and the super capacitor is used as a power supply. The super capacitor has the advantages of large current, quick charging, long service life and no influence of high temperature, the charging time is shortened, the normal power supply of the super capacitor is not influenced by the self-heating temperature generated during the working of the small household appliance, the current can ensure that the power supply of the monitoring system is sufficient, and the problem of slow data processing and transmission caused by insufficient power supply is avoided.

As shown in fig. 3, the radar unit includes a U2 detection chip for acquiring millimeter wave data, and the U2 detection chip is externally connected to a radar detector for acquiring millimeter wave data. The type of the U2 detection chip can be selected from S3KM 111L. The SDA port, the SCL port, the SPI-SCLK port, the SPI-MOSI0 port, the SPI-CSN port and the TSPI-IO port of the U2 detection chip are connected with the corresponding port of the U4 processing chip, millimeter wave data acquired by the U2 detection chip are transmitted to the U4 processing chip, the U4 processing chip performs logic operation, and the action condition of the old is determined. Namely the action form, the moving speed and the position of the old.

The O-T1 port, the O-T2 port and the RX port of the U4 processing chip are connected with a J1 communication interface, the J1 communication interface is used for being connected with the U5 processing chip, the U4 processing chip transmits the action condition of the old to the U5 processing chip, and the U5 processing chip carries out first logic operation according to the action condition of the old to judge whether the old falls down. The T2X33 port and the R2X33 port of the U5 processing chip are connected with a U4 communication interface and a U5 communication interface, and the U4 communication interface and the U5 communication interface are connected with a J1 communication interface of a radar unit, so that the radar unit with different functions can be conveniently selected according to customer requirements to be connected with the U4 processing chip.

As shown in fig. 2, the SDI port, IRQ port, SCK port, SDO port, CE port, and CSN port of the U5 processing chip are commonly connected to the U2 modulation interface, the U2 modulation interface is connected to a modulator, and the modulator modulates digital signals (such as files) in the U5 processing chip into sound signals capable of being wirelessly transmitted, so as to facilitate wireless transmission of data.

As shown in fig. 2 and 7, the IRQ port, the CE port, the CSN port, and the SCK port of the U5 processing chip are commonly connected to the U1 communication chip, and the RFN port of the U1 communication chip is connected to an ANT antenna, which is used for data transmission with other monitoring systems, so as to obtain the time spent by the elderly from the monitoring area of one monitoring system to the monitoring area of another monitoring system.

As shown in fig. 2 and 4, the T1X33 port, the R1X33 port, the DTR port, and the PEN port of the U5 processing chip are commonly connected to the U1 communication interface, the U1 communication interface is connected to the cellular communication unit, the cellular communication unit uploads the feedback data of the U5 processing chip, the data acquired by the radar unit, and the communication data between the local area network communication units to the cloud server, and the cloud server performs a second logical operation according to the acquired data, thereby further determining the action condition of the elderly person and improving the accuracy of the result.

As shown in fig. 4 and 5, the U4A communication chip is connected with an E1 antenna, and an E1 antenna is used for data transmission. The cellular communication sheet comprises a U4A communication chip, the USIM-CLK port, the USIM-DATA port, the USIM-RST port and the USIM-VDD port of the U4A communication chip are commonly connected with a U3 communication chip, the U3 communication chip is used for connecting a mobile network, and the mobile network connects the monitoring system with the cloud server through a signal base station so as to upload DATA to the cloud server through an E1 antenna.

A level conversion circuit is connected between the U4A communication chip and the U1 communication interface, one end of the level conversion circuit is connected to the TXD1.8 port and the RXD1.8 port of the U4A communication chip respectively, and the other end of the level conversion circuit is connected with the U1 communication interface.

The working principle and the working process of the utility model are as follows:

taking a small household appliance as an example, the socket is connected with a power supply, the super capacitor starts to charge, and power is supplied to the monitoring system. The emitting antenna sends the millimeter wave of assigned direction, and the millimeter wave passes through air propagation, meets old man and other indoor article and reflects back, is received by receiving antenna.

The radar unit obtains data received by the receiving antenna, action information (action state, moving speed and position) of the old man is generated through logical operation, the action information is transmitted to the radar monitoring terminal, the radar monitoring terminal gives feedback whether the old man falls down or not according to the action information of the old man, the cellular communication unit uploads a feedback result and judgment data to the cloud server, the cloud server performs second logical operation according to a second logical rule, whether the old man falls down or not is further judged, if the cloud server still judges that the old man falls down, and the cloud server sends alarm information to the monitoring terminal.

The room configuration shown in fig. 8 is an example, and the activities of the elderly in the living room and the bedroom are recorded by two monitoring systems. The detection area of the monitoring system in the living room corresponds to the shape of the living room, when the old people move in the living room, the radar unit can receive detection waves (millimeter waves reflected from the old people), and the position, the action state and the moving speed of the old people in the living room are determined through the detection waves. When the old man leaves the living room and gets into other regions, the radar unit can't receive the detection ripples, and the position of the detection ripples that receives at last is at the border position of detection area, when recording and save the old man and walk out the surveillance area edge, action state and moving speed to carry out logical operation, judge whether the old man falls down at the border position of detection area.

A house model with the same layout as that of the house of the old person is introduced into the cloud server, and when the old person disappears from the center of the lower edge of the detection area of the living room, the old person is judged to have gone to the balcony. If the old people fall down to the balcony, the old people will not return to the living room for a long time. The radar monitoring terminal records the disappearance position and disappearance time of the old people and uploads the disappearance position and disappearance time to the cloud server, the cloud server judges that the disappearance time of the old people on the balcony does not accord with the logic rule, and the cloud server sends out alarm information. The cloud server sends the alarm information to the monitoring terminal, and the monitoring terminal can contact with the neighbor of the old or a third party person to check the condition of the old.

The monitoring system of the living room detects that the old people disappear from the position obliquely below the living room, uploads the position, time and speed of the old people disappearing to the cloud server through cellular communication, and simultaneously transmits the position, time and speed to the monitoring system in the bedroom through the local area network communication unit. The monitoring system of the bedroom records the disappearance time of the old people and uploads the time to the cloud server through cellular communication.

The cloud server calculates the time when the old person appears in the bedroom according to the speed when the old person disappears, and if the cloud server receives data that the old person enters the bedroom within the set time; the cloud server judges according to the second logic rule that the staying time of the old people still exceeds the set value, the old people is judged to fall down, and the cloud server sends out alarm information. The cloud server sends the alarm information to the monitoring terminal, and the monitoring terminal can contact with the neighbor of the old or a third party person to check the condition of the old.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.

Claims

1. The old man behavior monitoring system based on the millimeter wave radar is characterized by comprising radar monitoring terminals, wherein the radar monitoring terminals are respectively connected with a radar unit for judging the action condition of a human body, a cellular communication unit for remote data transmission, a local area network communication unit for data intercommunication among different monitoring systems and a power supply unit for supplying power to the system;

2. The millimeter wave radar-based elderly behavior monitoring system according to claim 1, wherein the radar unit comprises a radar detector, the radar detector comprises a transmitting antenna and a plurality of receiving antennas, and the receiving antennas are arranged in parallel.

3. The millimeter wave radar-based elderly behavior monitoring system of claim 1, wherein said power supply unit comprises a super capacitor for storing electrical energy.

4. The millimeter wave radar-based elderly behavior monitoring system according to claim 1, wherein the radar monitoring terminal comprises a U5 processing chip for data processing and feedback, the U5 processing chip is electrically connected with a U1 communication interface for connecting with a cellular communication unit, a U4 communication interface and a U6 communication interface for connecting with a radar unit, and a U2 modulation interface for connecting with a modulator.

5. The old man behavior monitoring system based on millimeter wave radar as claimed in claim 1, wherein the radar unit comprises a U2 detection chip for acquiring millimeter wave data, the output end of the U2 detection chip is connected with a U4 processing chip for determining human body action conditions, and the U4 processing chip is connected with a J1 communication interface for connecting with a U5 processing chip.

6. The millimeter wave radar-based elderly behavior monitoring system according to claim 1, wherein the cellular communication unit comprises a U4A communication chip, and the U4A communication chip is connected with a U3 chip for connecting a mobile network and an E1 antenna for data transmission.

7. The millimeter wave radar-based elderly behavior monitoring system according to claim 1, wherein the local area network communication unit comprises a U1 communication chip, and an ANT antenna for data transmission is connected to the U1 communication chip.

8. The old man behavior monitoring system based on millimeter wave radar as claimed in claim 1, wherein the power supply unit comprises a U3 voltage regulation chip, and the input end of the U3 voltage regulation chip is connected with a J2 power-on serial port.

9. The millimeter wave radar-based elderly behavior monitoring system of claim 1, wherein the monitoring system is integrally installed in a small household appliance.

10. The millimeter wave radar-based elderly behavior monitoring system of claim 9, wherein said household appliance comprises a desk lamp base, a socket, or a light bulb.