CN114280600A - Anti-interference human body existence detection system and method - Google Patents
Anti-interference human body existence detection system and method Download PDFInfo
- Publication number
- CN114280600A CN114280600A CN202111548465.7A CN202111548465A CN114280600A CN 114280600 A CN114280600 A CN 114280600A CN 202111548465 A CN202111548465 A CN 202111548465A CN 114280600 A CN114280600 A CN 114280600A
- Authority
- CN
- China
- Prior art keywords
- detection
- central control
- control mcu
- detection system
- interference
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention belongs to the technical field of intelligent monitoring of Internet of things and discloses an anti-interference human body presence detection system and an anti-interference human body presence detection method. The invention has the beneficial effects that: whether human body exists in the environment can be accurately detected, the installation mode of the device is simple, and the device has certain anti-interference capability.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of intelligent monitoring of the Internet of things, in particular to an anti-interference human body presence detection system and method.
[ background of the invention ]
The smart home is closer to our life, can provide an all-round information interaction function, optimizes the life style of people and improves the safety of home. Nowadays, because people's family and office area constantly improve energy-conserving, intelligent consciousness, when the intelligent house trade realizes comfortable life, still strives to realize the life style of energy-concerving and environment-protective. In the field of human presence detection, a problem has been regarded as an industry pain point, namely that a commonly used infrared sensor for human detection cannot detect a stationary person. The most common phenomenon is that if the induction lamp is in a relatively static state at home, the induction lamp can be automatically extinguished, and the lamp can be continuously lightened only when a secondary action is needed, so that a certain energy-saving effect is achieved, the induction lamp is very inconvenient to use, and the user experience is very poor. The method can not accurately detect the motionless human body, and can not balance the contradiction between convenient use for users and energy conservation and environmental protection.
In the prior art, monitoring technologies for recognizing the existence of a static human body generally adopt infrared induction, ultrasonic detection, microwave detection and the like, and have the problems of low recognition rate, high misjudgment rate, poor user experience and the like. Although the accuracy of detection can be improved by adopting the camera for monitoring, the privacy of a person is easily invaded by adopting the camera, and the application range is small. The above method also has the following problems: (1) the relatively static human presence cannot be detected. (2) The installation requirements are complex.
(3) The detection distance for detecting a stationary human body is short. (4) The radar detection is easily influenced by environmental factors, and the false alarm rate is high.
Therefore, there is a need to provide an anti-interference human body presence detection system and method, which can accurately detect a stationary human body, improve the detection distance of the device while the installation method of the device is simple, and the device has a certain anti-interference capability, so as to avoid false alarm caused by the movement of objects such as curtains, greenery plants, air conditioners, fans, and the like.
[ summary of the invention ]
The invention discloses an anti-interference human body existence detection system and method, which can effectively solve the technical problems related to the background technology.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides an anti-interference human existence detecting system, includes well accuse MCU, millimeter wave radar detecting system, infrared pyroelectric detecting system, power supply system and wireless communication system, millimeter wave radar detecting system with infrared pyroelectric detecting system is used for information acquisition and feeds back information to well accuse MCU, well accuse MCU carries out data processing and sends the result to wireless communication system, wireless communication system is used for feeding back the result to the user, power supply system is used for well accuse MCU millimeter wave radar detecting system infrared pyroelectric detecting system with wireless communication system's power supply.
An anti-interference human presence detection method, comprising the steps of:
s1, the central control MCU sets the following parameters: a large action threshold value macro, b small action threshold value micro, c large action trigger filter value tridely, d small action trigger filter value valid and interference detection time T;
installing the detection equipment in an environment to be detected, electrifying after the installation is finished, and entering an initial detection state;
s2, the millimeter wave detection system detects the environment to be detected to obtain the large action value m of the detection information1And a small action value m2The detection information is fed back to the central control MCU, and the infrared pyroelectric detection system detects the environment to be detected, obtains the detection information and feeds the detection information back to the central control MCU;
s3, judging F by the central control MCU1If F is a value of1The central control MCU outputs a person signal and runs S4 when the person signal is 1; if F1When the signal is 0, the central control MCU outputs a no-man signal and repeatedly operates S3;
wherein F1 ═ AB;
when the infrared pyroelectric detection system detects that a human body moves, B is 1, otherwise, B is 0;
during the time c, if m is constant1A is more than or equal to a, the A is 1, otherwise, the A is 0;
s4, the central control MCU judges whether m is1A, if yes, the central control MCU outputs a person signal and repeatedly operates S4; if not, thenExecution of S5;
s5, the central control MCU outputs a human signal and carries out interference detection, wherein the interference detection comprises the following steps:
s51, the central control MCU judges whether m times are continued for d times within the T time2<b, if yes, outputting an unattended signal, and executing S3; if not, a person signal is output, and S4 is performed.
As a preferred improvement of the present invention: c ═ c1×c2；
Wherein c is1Time consumed for shaking the human body;
c2is a positive number.
As a preferred improvement of the present invention: c is mentioned1＝0.25 second, c2＝2。
The invention has the following beneficial effects:
1. the invention uses the millimeter wave radar technology to realize static target detection, the detection distance is relatively far, the millimeter wave components are small in size and easy to install, radar application parameters are set when the equipment leaves a factory according to the actual environment background noise data acquisition of various scenes, the daily-used various application scenes can be met, and the equipment can be installed and used without being configured and debugged after being purchased by a user, and is simple to install;
2. on the basis of millimeter wave radar detection, an infrared pyroelectric detection system is added, and then the infrared pyroelectric detection system and the millimeter wave radar detection system are subjected to fusion processing through a data algorithm combined with the infrared pyroelectric detection system and the pyroelectric detection system, so that false alarm caused by movement of objects such as curtains, green plants, air conditioners and fans can be avoided, the anti-jamming capability of the device is improved, and the detection result of the device is more accurate.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic block diagram of an anti-interference human presence detection system of the present invention;
fig. 2 is a flow chart of an anti-interference human presence detection method of the present invention.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following 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 should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides an anti-interference human body existence detection system which comprises a central control MCU, a millimeter wave radar detection system, an infrared pyroelectric detection system, a power supply system and a wireless communication system, wherein the millimeter wave radar detection system and the infrared pyroelectric detection system are used for collecting information and feeding back the information to the central control MCU, the central control MCU is used for carrying out data processing and sending a result to the wireless communication system, the wireless communication system is used for feeding back the result to a user, and the power supply system is used for supplying power to the central control MCU, the millimeter wave radar detection system, the infrared pyroelectric detection system and the wireless communication system.
As an implementation manner, as shown in fig. 1, the core components of the anti-interference human presence detection system mainly include a central control MCU, a millimeter wave radar detection system, an infrared pyroelectric detection system, a power supply system, and a wireless communication system. The power supply system is used for providing power supplies of all other systems, and the central control MCU is a core control center of the system and is also a hardware support for data collection, processing and analysis. The millimeter wave radar detection system is composed of a millimeter wave radar sensor and a radar sensor data acquisition module, and the infrared pyroelectric detection system is composed of an infrared pyroelectric sensor and an infrared sensor data acquisition module. The radar sensor data acquisition module is used for detecting the application of the radar sensor, and the infrared sensor data acquisition module is used for detecting the application of the infrared pyroelectric sensor. The wireless communication system is used for connecting the detection state information of the equipment to the cloud platform and the APP in a wireless mode, and is convenient for a user to check and configure other secondary application functions. It should be further noted that other components may be employed to achieve the above-mentioned effects, which are within the inventive concept of the present invention and are within the scope of the present invention.
The invention provides an anti-interference human body presence detection system, which is innovatively designed aiming at the defects of incapability of detecting a static target, complex installation requirement, short detection distance of a static human body, high false alarm rate and the like in the field of human body presence detection at present. The anti-interference human body existence detection system uses a millimeter wave radar technology to realize the detection of static targets, the wave beam of millimeter waves is narrow, the wave beam of millimeter waves is much narrower than that of microwaves under the same antenna size, and small targets which are closer to each other can be distinguished or the details of the targets can be observed more clearly. The millimeter wave radar technology is used for static human body detection, and the farthest static detection distance can reach 7 meters. In addition, compared with microwaves, millimeter wave components are much smaller in size and easier to miniaturize, relevant radar application parameters are set before equipment leaves a factory according to environment background noise data acquisition of various scenes in practice, various application scenes in daily use can be met, users do not need to configure and debug after purchasing, and the millimeter wave components are installed and used immediately and are simple to install. The problems that the existing device cannot detect a static target, the installation requirement is complex and the static detection distance is short are solved. On the basis of millimeter wave radar detection, infrared pyroelectric detection is added, two detection results are combined, false alarm caused by movement of objects such as curtains, green plants, air conditioners and fans can be avoided, and the problem that the device false alarm rate is high due to the fact that a millimeter wave radar detection system is used for detection independently is solved.
The invention also provides an anti-interference human body existence detection method, which comprises the following steps:
s1, the central control MCU sets the following parameters: a large action threshold value macro, b small action threshold value micro, c large action trigger filter value tridely, d small action trigger filter value valid and interference detection time T;
installing the detection equipment in an environment to be detected, electrifying after the installation is finished, and entering an initial detection state;
s2, the millimeter wave detection system detects the environment to be detected to obtain the large action value m of the detection information1And a small action value m2And feeding back the detection information to the central control MCU for infrared pyroelectric detectionThe system detects the environment to be detected, obtains detection information and feeds the detection information back to the central control MCU;
s3, judging F by the central control MCU1If F is a value of1The central control MCU outputs a person signal and runs S4 when the person signal is 1; if F1When the signal is 0, the central control MCU outputs a no-man signal and repeatedly operates S3;
wherein F1 ═ AB;
when the infrared pyroelectric detection system detects that a human body moves, B is 1, otherwise, B is 0;
during the time c, if m is constant1A is more than or equal to a, the A is 1, otherwise, the A is 0;
s4, the central control MCU judges whether m is1A, if yes, the central control MCU outputs a person signal and repeatedly operates S4; if not, go to S5;
s5, the central control MCU outputs a human signal and carries out interference detection, wherein the interference detection comprises the following steps:
s51, the central control MCU judges whether m times are continued for d times within the T time2<b, if yes, outputting an unattended signal, and executing S3; if not, a person signal is output, and S4 is performed.
Specifically, the detection flow of the device is as shown in fig. 2, and the device is powered on and enters an initial detection state. The system of the central control MCU sets related application parameters of the radar sensor and the sensitivity of the infrared sensor by default. The application parameters of the radar sensor are macro, micro, tridely and valid. macro is the large action threshold, micro is the small action threshold, tridely is the large action trigger filter value, and validity is the small action trigger filter value. The purpose of the macro is to judge that the detected target is detected when the amplitude of the activity of the detected target exceeds a set value, namely, to detect a person. The purpose of setting the micro is to determine that the detected object leaves the detection area when the micro motion of the detected object is lower than the set value and exceeds a certain detection number, namely, no person is detected. The validity is the number of times of detection of the micro signal, and is used for filtering out part of the interference signal. trigely is used for filtering large action trigger signals, by which value interfering signals can be rejected when there are occasional signals in the environment above the large action threshold. c ═ c1×c2Wherein c is1Time taken for shaking the human body (measured by experiment), c2Is a positive number. In this embodiment c1＝0.25 second, c2＝2. It means that the presence is determined only when the macro-motion trigger is continuously detected within 0.5S. When the human body is still and does not act, only breathing action and heartbeat action exist, and the setting of the threshold value of the microth is smaller than the value of the microth fed back by the breathing and heartbeat actions, so that the human body in a static state can be detected. The sensitivity of the infrared sensor indicates that the human body can output a human motion signal when having displacement movement, otherwise, the human motion signal can not be output. Therefore, the micro-motion detection and the infrared motion detection of the radar are combined, and the good anti-interference effect is achieved. The threshold value of the millimeter wave radar is subjected to analog measurement in various environments in advance, the threshold value range is set before delivery, a value range book can be prepared, and a user can adjust the threshold value according to the used environment.
A large motion threshold value, a small motion threshold value, b, a large motion trigger filter value, c, and a small motion trigger filter value, d, and the sensitivities of the infrared sensors are set to S and F1＝AB。
The large action value output by the radar sensor is m1Every 10MS detection, and every 100MS output m1The value is obtained. When m is continuously detected within time c1A is ≧ a, the value of A is 1, indicating a human signal. The output value of the infrared sensor is B, the B value is output once every 200ms, and when the human body has displacement movement action, the B value is 1.
That is, when the radar detects that a person exists and the infrared detection of the movement of the person, the system judges that the person exists, F1Is 1, a presence message is output. Thus, when the environment in the detection range has the conditions such as curtain flutter, multi-leafy green vegetation wind blow, air conditioner and fan rotation, m is at the moment1And a, the radar output value A becomes 1. However, at this time, since the infrared sensor does not detect the human body displacement movement, if the infrared output value B is still 0, F1The value of (d) is 0. The system can not output the existence information of people, effectively filters the interference and avoids misinformation.
And when the system detects that people exist in the environment, outputting the existence of people and carrying out continuous detection. Human movement in the environment, m1A, therefore, the detection of large motion only needs to be carried out by the millimeter wave radar. When the human body leaves the detection area, or is still, m1<and a, judging whether a person exists in the detection environment or not according to the small action value. The millimeter wave radar detects human bodies, and m may exist at a certain moment due to different installation positions2<b, in order to avoid false alarm, setting a small-action trigger filter value, and judging whether m times of m are continued or not2<And b, judging whether a person exists in the environment, and improving the anti-interference capability of the detection system.
The working principle is as follows: the invention uses the millimeter wave radar technology to realize static target detection, the detection distance is relatively long, the millimeter wave components are small in size and easy to install, radar application parameters are set when the equipment leaves a factory according to the environment background noise data acquisition of various actual scenes, the daily-used application scenes can be met, and the equipment can be installed and used without being configured and debugged after being purchased by a user, and is simple to install. On the basis of millimeter wave radar detection, an infrared pyroelectric detection system is added, and then the infrared pyroelectric detection system and the millimeter wave radar detection system are subjected to fusion processing through a data algorithm combined with the infrared pyroelectric detection system and the pyroelectric detection system, so that false alarm caused by movement of objects such as curtains, green plants, air conditioners and fans can be avoided, the anti-jamming capability of the device is improved, and the detection result of the device is more accurate.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the specification and the embodiments, which are fully applicable to various fields of endeavor for which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (4)
1. An anti-interference human presence detection system, characterized by: the millimeter wave radar detection system and the infrared pyroelectric detection system are used for collecting information and feeding back the information to the central control MCU, the central control MCU is used for carrying out data processing and sending results to the wireless communication system, the wireless communication system is used for feeding back the results to a user, and the power supply system is used for supplying power to the central control MCU, the millimeter wave radar detection system, the infrared pyroelectric detection system and the wireless communication system.
2. A detection method according to claim 1 for an anti-tamper human presence detection system, comprising the steps of:
s1, the central control MCU sets the following parameters: a large action threshold value macro, b small action threshold value micro, c large action trigger filter value tridely, d small action trigger filter value valid and interference detection time T;
installing the detection equipment in an environment to be detected, electrifying after the installation is finished, and entering an initial detection state;
s2, the millimeter wave detection system detects the environment to be detected to obtain the large action value m of the detection information1And a small action value m2The detection information is fed back to the central control MCU, and the infrared pyroelectric detection system detects the environment to be detected, obtains the detection information and feeds the detection information back to the central control MCU;
s3, judging F by the central control MCU1If F is a value of1The central control MCU outputs a person signal and runs S4 when the person signal is 1; if F1When the signal is 0, the central control MCU outputs a no-man signal and repeatedly operates S3;
wherein F1 ═ AB;
when the infrared pyroelectric detection system detects that a human body moves, B is 1, otherwise, B is 0;
during the time c, if m is constant1A is more than or equal to a, the A is 1, otherwise, the A is 0;
s4, the central control MCU judges whether m is1A, if yes, the central control MCU outputs a person signal and repeatedly operates S4; if not, go to S5;
s5, the central control MCU outputs a human signal and carries out interference detection, wherein the interference detection comprises the following steps:
s51, the central control MCU judges whether m times are continued for d times within the T time2<b, if yes, outputting an unattended signal, and executing S3; if not, a person signal is output, and S4 is performed.
3. The anti-interference human presence detection method according to claim 2, characterized in that: c ═ c1×c2；
Wherein c is1Time consumed for shaking the human body;
c2is a positive number.
4. The anti-interference human presence detection method according to claim 3, characterized in that: c is mentioned1＝0.25 second, c2＝2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111548465.7A CN114280600A (en) | 2021-12-17 | 2021-12-17 | Anti-interference human body existence detection system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111548465.7A CN114280600A (en) | 2021-12-17 | 2021-12-17 | Anti-interference human body existence detection system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114280600A true CN114280600A (en) | 2022-04-05 |
Family
ID=80872809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111548465.7A Pending CN114280600A (en) | 2021-12-17 | 2021-12-17 | Anti-interference human body existence detection system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114280600A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115656999A (en) * | 2022-12-20 | 2023-01-31 | 广州鲁邦通物联网科技股份有限公司 | Elevator personnel presence detection method based on PIR and PCR sensors |
-
2021
- 2021-12-17 CN CN202111548465.7A patent/CN114280600A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115656999A (en) * | 2022-12-20 | 2023-01-31 | 广州鲁邦通物联网科技股份有限公司 | Elevator personnel presence detection method based on PIR and PCR sensors |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111671352B (en) | Automatic door induction triggering area adjusting method | |
| EP3963554A1 (en) | Machine learning motion sensing with auxiliary sensors | |
| EP3745371A1 (en) | Smoke detection method, smoke detection device, smoke alarm and storage medium | |
| CN111664557A (en) | Air conditioner PMV control method and system fusing biological radar detection technology | |
| Ha et al. | Development of PIR sensor based indoor location detection system for smart home | |
| CN103375869A (en) | Air conditioner control method, device and air conditioner | |
| CN109541580B (en) | Electrical equipment control method and device and electrical equipment | |
| CN104700543A (en) | Microwave-induced detection method and device used for safety protection | |
| CN114280600A (en) | Anti-interference human body existence detection system and method | |
| CN107801125A (en) | A kind of intelligent sound box control system with microwave radar sensing | |
| CN113767302A (en) | System and method for radar-based detection of people in a room | |
| CN113377019A (en) | Monitoring equipment and method and intelligent household system | |
| CN105066350B (en) | Temperature control equipment, humidity control system and temprature control method | |
| US20230055654A1 (en) | State Detection | |
| Hammoud et al. | Ultrasense: A self-calibrating ultrasound-based room occupancy sensing system | |
| CN108954513A (en) | A kind of air-conditioning system based on body-sensing intelligent control | |
| CN113791403A (en) | Human body existence judgment method and system | |
| CN105890770A (en) | Human body state detection device based on pyroelectric technology | |
| CN213129347U (en) | Obstacle and cliff detection device based on TOF sensor and cleaning robot | |
| Bai et al. | Enhancement of the complement of an embedded surveillance system with PIR sensors and ultrasonic sensors | |
| CN112378033A (en) | Air conditioner control method and system | |
| CN220552975U (en) | Human body detection sensor | |
| CN113960692B (en) | Sensing method and device of millimeter wave, electronic equipment and storage medium | |
| CN112669562A (en) | Computer internet of things fire early warning system | |
| CN109917374A (en) | A kind of indoor detection method using Distributed Network Radar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |