CN212569174U - Indoor living body monitoring device - Google Patents
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- CN212569174U CN212569174U CN202021755356.3U CN202021755356U CN212569174U CN 212569174 U CN212569174 U CN 212569174U CN 202021755356 U CN202021755356 U CN 202021755356U CN 212569174 U CN212569174 U CN 212569174U
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Abstract
The utility model provides an indoor live body monitoring devices, wherein, the device includes: the front-end radio frequency module is used for transmitting a first linear frequency modulation pulse signal indoors, receiving a second linear frequency modulation pulse signal reflected on a corresponding reflection path, and generating an output signal according to the first linear frequency modulation pulse signal and the second linear frequency modulation pulse signal; and the central control module is used for processing the output signal to generate two-dimensional frequency domain information, establishing an indoor living body motion frequency model according to the two-dimensional frequency domain information, and carrying out indoor living body monitoring on a room to be monitored according to the indoor living body motion model. From this, not only can accurately carry out the live body monitoring to the room effectively, can avoid appearing invading the condition of tenant privacy effectively moreover.
Description
Technical Field
The utility model relates to an indoor monitoring technology field, concretely relates to indoor live body monitoring devices.
Background
The method directly benefits from the rapid development of national economy and the improvement of the living consumption level of people, the scale of the hotel industry in China is continuously increased, and the hotel industry in China gradually moves to a large-scale and high-quality development era. However, as consumer upgrades, people are also more concerned about hotel safety issues, such as: illegal break-in exists during night rest; whether a situation that one person registers a plurality of persons exists; and the condition that the pet is taken to live in the house without following the rule and system of the restaurant.
In the related art, in order to solve the above problems, video computer vision, infrared imaging, thermal imaging, and other technologies are generally used for indoor living body monitoring. However, when monitoring is performed by adopting technologies such as infrared imaging and thermal imaging, the temperature is easily influenced, so that the monitoring precision is greatly reduced; when the video computer vision technology is adopted for monitoring, the influence of factors such as light or barrier shielding is easily received, so that the monitoring precision is low, and the privacy of the tenant is invaded to a certain extent by the application of vision.
SUMMERY OF THE UTILITY MODEL
The utility model provides a solve above-mentioned technical problem, provide an indoor live body monitoring devices, not only can accurately carry out the live body monitoring to the room effectively, can avoid appearing the condition of invading tenant's privacy moreover effectively.
The utility model adopts the technical scheme as follows:
an indoor living body monitoring device comprising: the front-end radio frequency module is used for transmitting a first linear frequency modulation pulse signal indoors, receiving a second linear frequency modulation pulse signal reflected on a corresponding reflection path, and generating an output signal according to the first linear frequency modulation pulse signal and the second linear frequency modulation pulse signal; and the central control module is used for processing the output signal to generate two-dimensional frequency domain information, establishing an indoor living body motion frequency model according to the two-dimensional frequency domain information, and carrying out indoor living body monitoring on a room to be monitored according to the indoor living body motion model.
The front-end radio frequency module is specifically configured to: and using a phase difference between the first chirp signal and the second chirp signal as a phase of the output signal, and using a frequency difference between the first chirp signal and the second chirp signal as a frequency of the output signal to generate the output signal.
The central control module is specifically configured to: performing one-dimensional FFT processing on the output signal to generate one-dimensional frequency domain information; and performing two-dimensional FFT processing on the one-dimensional frequency domain information to generate two-dimensional frequency domain information.
The front-end radio frequency module is also used for scanning the room to be monitored so as to generate an output signal to be detected; the central control module is specifically configured to perform corresponding processing on the output signal to be detected to generate two-dimensional frequency domain information to be detected, and input the two-dimensional frequency domain information to be detected into the indoor living body motion frequency model to perform indoor living body monitoring on a room to be monitored.
The front-end radio frequency module is further configured to scan the room to be monitored for N times to generate N frames of output signals to be detected, where N is a positive integer greater than or equal to 2; the central control module is specifically configured to perform corresponding processing on the N frames of output signals to be detected to generate N pieces of two-dimensional frequency domain information to be detected, and input the N pieces of two-dimensional frequency domain information to be detected into the indoor living body motion frequency model to perform N times of indoor living body monitoring on a room to be monitored.
The central control module is further configured to: and determining whether the number of times that the living bodies exist in the monitored room and the number of the existing living bodies is M is greater than or equal to N times, and determining that the living bodies exist in the monitored room and the number of the existing living bodies is M when the number of times that the living bodies exist in the monitored room and the number of the existing living bodies is M is greater than or equal to N times, wherein M is a positive integer, and N is less than or equal to N.
The central control module is further configured to: when a living body exists in a monitoring room, the respiratory motion frequency, the heartbeat frequency and the radar scattering sectional area of the living body are obtained, and the living body is classified according to the respiratory motion frequency, the heartbeat frequency and the radar scattering sectional area.
The central control module is further configured to: performing three-dimensional FFT processing on the two-dimensional frequency domain information to be detected to generate three-dimensional frequency domain information to be detected; acquiring distance information and angle information of a living body according to the two-dimensional frequency domain information to be detected and the three-dimensional frequency domain information to be detected; and determining the position information of the living body in the room to be monitored according to the distance information and the angle information.
Indoor living body monitoring device still includes: the alarm module is used for sending out corresponding alarm information according to a monitoring result; the communication module is used for generating corresponding feedback information according to the monitoring result and sending the feedback information to corresponding terminal equipment; and the indoor management module is used for controlling the on/off of the power equipment in the room to be monitored according to the monitoring result.
The utility model has the advantages that:
the utility model discloses a front end radio frequency module is to indoor scanning, not only can accurately carry out the live body to the room effectively and lose the monitoring that falls, can avoid appearing the condition of invading tenant's privacy moreover effectively.
Drawings
Fig. 1 is a schematic block diagram of an indoor living body monitoring device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a front-end rf module according to an embodiment of the present invention;
FIG. 3 is a logic diagram of an indoor in-vivo monitoring method according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a connection relationship between the front-end rf module and the central control module according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a connection relationship between a front-end rf module and a central control module according to another embodiment of the present invention;
fig. 6 is a schematic block diagram of an indoor living body monitoring device according to an embodiment of the present invention;
fig. 7 is a schematic view of a communication mode of a communication module according to an embodiment of the present invention;
FIG. 8 is a logic diagram of an indoor in-vivo monitoring method according to another embodiment of the present invention;
fig. 9 is a schematic view of an installation position of an indoor living body monitoring device in a room according to an embodiment of the present invention;
fig. 10 is a flowchart of an indoor living body monitoring method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Fig. 1 is a block schematic diagram of an indoor living body monitoring device according to an embodiment of the present invention.
It should be noted that the utility model discloses indoor live body monitoring devices can be applied to the live body detection in hotel guest room, also can be applied to other indoor live body detections, specifically do not do the restriction.
As shown in fig. 1, an indoor living body monitoring device 10 according to an embodiment of the present invention may include a front end rf module 100 and a central control module 200.
The front-end radio frequency module 100 is configured to transmit a first chirp signal indoors, receive a second chirp signal reflected on a corresponding reflection path, and generate an output signal according to the first chirp signal and the second chirp signal; the central control module 200 is configured to process the output signal to generate two-dimensional frequency domain information, establish an indoor living body motion frequency model according to the two-dimensional frequency domain information, and perform indoor living body monitoring on a room to be monitored according to the indoor living body motion model.
According to the utility model discloses an embodiment, front end radio frequency module 100 specifically is used for: the phase difference between the first chirp signal and the second chirp signal is taken as the phase of the output signal, and the frequency difference between the first chirp signal and the second chirp signal is taken as the frequency of the output signal to generate the output signal.
Specifically, as shown in fig. 2, the front-end rf module 100 may include a synthesizer 110, a transmitting antenna 120, a receiving antenna 130, and a mixer 140.
Specifically, in the practical application process, as shown in fig. 3, a radar radio frequency front end (front end radio frequency module 100) may first transmit and receive millimeter wave signals (chirp signals) by using a MIMO system with multiple transmission and multiple reception, for example, millimeter waves of 60GHz or 77GHz may be transmitted, so as to intermittently scan an indoor space, and obtain an output signal xout(t) of (d). Therein, as shown in FIG. 2, a first chirp signal x may be generated by a synthesizer 1101(t) and transmits the first chirp signal to the room through the transmitting antenna 120. Object to the first chirp signal x1(t) after reflection, a second chirp signal x can be reflected along the corresponding transmission path2(t) at this time, the second chirp signal x can be captured by the receiving antenna 1302(t) of (d). From the first chirp signal x by means of a mixer 1401(t) and a second chirp signal x2(t) generating an output signal xout(t)。
Wherein the mixer 140 outputs a signal xout(t) has an instantaneous frequency equal to the first chirp signal x1(t) and a second chirp signal x2(t) difference in instantaneous frequency, output signal xout(t) is equal in phase to the first chirp signal x1(t) and a second chirp signal x2(t) phase difference. For example, when the first chirp signal x1(t)＝sin(w1t+φ1) And a second chirp signal x2(t)＝sin(w2t+φ2) Time, output signal xout(t)＝sin[(ω1-ω2)t+(φ1-φ2)]。
It should be noted that, as shown in fig. 4 and 5, the number of the transmitting antennas 120 may include a, and the number of the receiving antennas 130 may include b, where a of the transmitting antennas 120 may constitute a transmitting antenna array, and b of the receiving antennas 130 may constitute a receiving antenna array. Wherein the first chirp signal x may be transmitted by an array of transmit antennas1(t) transmitting to the room, and receiving the echo signal, i.e. the second chirp signal x, by the receiving antenna array2(t) applying the first chirp signal x via the front end RF module 1001(t) and a second chirp signal x2(t) after processing, an output signal x is generatedout(t)。
Further, as a possible implementation, as shown in fig. 4, the front-end rf module 100 generates the output signal xoutAfter (t), the internal SDRAM (synchronous dynamic random access memory) may be used to directly transmit data back to the RAM (random access memory) of the central control module 200 at a certain rate (e.g., 480Mbps) through the Mipi-CSI2 communication interface, and then SPT data processing is performed through the central control module 200.
As another possible implementation, as shown in fig. 5, the front-end rf module 100 generates the output signal xoutAfter (t), the output signal x may be first outputout(t) store in internal RAM (i.e., internal RAM1) for buffering, and then output signal x by EDMA driveout(t) the SPT data is transferred to the internal RAM (i.e., the internal RAM2) of the central control module 200 in the ping-pong mode of operation and stored therein, and finally, the SPT data is processed by the central control module 200.
How to process the output signal by the central control module 200 is described in detail below with reference to specific embodiments.
According to an embodiment of the present invention, the central control module 200 is specifically configured to: performing one-dimensional FFT processing on the output signal to generate one-dimensional frequency domain information; and performing two-dimensional FFT processing on the one-dimensional frequency domain information to generate two-dimensional frequency domain information.
Specifically, the front-end rf module 100 generates the output signal xoutAfter (t), the output signal x can be first corrected by the central control module 200out(t) performing one-dimensional FFT processing to obtain one-dimensional frequency domain information Xout_s(w), e.g. for the output signal xout(t) performing FFT processing in the distance dimension direction, and eliminating stationary clutter components to obtain one-dimensional frequency domain information Xout_s(w), then for one-dimensional frequency domain information Xout_s(w) performing two-dimensional FFT processing, e.g., on one-dimensional frequency domain information Xout_s(w) performing a quadratic FFT process in a velocity dimension direction to generate two-dimensional frequency domain information Xout_ss(w) and based on the two-dimensional frequency domain information Xout_ss(w) establishing an indoor living body motion frequency model.
It should be noted that, in order to further improve the detection accuracy, as shown in fig. 3, the output signal x may be first output through the analog-to-digital conversion module ADCout(t) discrete sampling is carried out on the signals subjected to frequency reduction and filtering to obtain two paths of signals I/Q, and the digital signal X obtained by sampling is usedout_s(t) is stored in the memory of the central control module 200. After acquiring the data in the memory, the central control module 200 may perform the above-mentioned operations to generate the two-dimensional frequency domain information Xout_ss(w), i.e. for the acquired digital signal Xout_s(t) performing one-dimensional FFT processing to obtain one-dimensional frequency domain information Xout_s(w) and based on the one-dimensional frequency domain information Xout_s(w) performing two-dimensional FFT processing to generate two-dimensional frequency domain information Xout_ssAnd (w) establishing a motion frequency model of the living body in the vehicle.
Further, after the indoor living body motion frequency model is established, the indoor living body motion frequency model can be applied to indoor living body monitoring of the room to be monitored.
The following describes how to perform indoor living body monitoring on a room to be monitored according to an indoor living body motion frequency model in detail with reference to specific embodiments.
According to an embodiment of the present invention, the front end rf module 100 is further configured to scan a room to be monitored to generate an output signal to be detected; the central control module 200 is specifically configured to perform corresponding processing on an output signal to be detected to generate two-dimensional frequency domain information to be detected, and input the two-dimensional frequency domain information to be detected into the indoor living body motion frequency model to perform indoor living body monitoring on a room to be monitored.
Specifically, as shown in fig. 3, when the in-vivo monitoring is performed in a room to be monitored, a frame of a first chirp signal may be transmitted into the room to be monitored through the front-end rf module 100, where one frame includes K chirp signals (chirp signals) to complete one-time scanning of the room to be monitored, and a frame of an output signal x to be detected is outputout’(t)。
It should be noted that, in order to improve the detection accuracy, the output signal x to be detected may be first detected by the high-precision analog-to-digital converter ADCout' (t) discrete sampling of the down-converted and filtered signal, i.e. of the output signal x to be detected for one frameout' (t) is sampled, wherein each chirp acquires Q points, and acquires the digital signal X to be detected of one frameout_s' (t) is sent to the memory of the central control module 100(DSP) and stored, and data of K × Q points needs to be stored.
The central control module 200 acquires data in the memory, and firstly detects a frame of digital signal X to be detectedout_s' (t) one-dimensional FFT processing, e.g. of the digital signal X to be detectedout_s' (t) FFT processing is carried out in the distance dimension direction, and static clutter components are removed to generate one-dimensional frequency domain information to be detected, namely distance spectrum information X on the frequency domain is obtainedout_r(w), secondly, for one-dimensional frequency domain information Xout_r(w) the virtual antenna array processing is carried out, namely a virtual array with a plurality of virtual array elements can be formed by using a few antenna array elements, so that the aperture of the antenna array is expanded, and the angle resolution is improved. Then, the distance spectrum information X in the frequency domain is processedout_r(w) performing a two-dimensional FFT process, e.g., a velocity-dimensional FFT process, to obtain a distance velocity spectrumXout_rd(w) is carried out. For distance velocity spectrum Xout_rd(w) calculating the amplitude, performing constant false alarm rate detection processing on the distance dimension and the velocity dimension on the calculated amplitude, and screening the distance dimension and the velocity dimension { s [ l ] meeting the local peak point]And l is the number of the stored peak values, wherein the peak value information comprises distance dimension and speed dimension information, namely two-dimensional frequency domain information to be detected.
Further, for distance spectral information Xout_r(w) FFT processing of antenna direction dimension is carried out to obtain a distance angle spectrum Xout_ra(w) using the peak value { s [ l ]]Sequence from Xout_ra(w) obtaining target living body azimuth angle parameter { DOA [ l ] on frequency domain information]}。
For distance velocity spectrum Xout_rdAnd (w) carrying out CFRA processing to remove the interference caused by clutter interference. Using peak values s l]Sequence from two-dimensional frequency domain information Xout_ss(w) obtaining a target living body motion frequency parameter { Doppler [ l]}. According to the obtained azimuth angle parameter { DOA [ l ] of the target living body]And a target living body motion frequency parameter { Doppler [ l }]And separating the target living body motion frequency parameters. The respiratory motion and the heartbeat motion of the living body in the received signals can cause micro Doppler effect, and the respiratory frequency and the heartbeat frequency of a detection target can be separated through analysis of a micro Doppler frequency domain, wherein the respiratory frequency of a human body is 0.1-0.5Hz, and the heartbeat frequency is 0.8-2Hz, so that whether the living body exists in a room or not and the number of the living bodies can be judged.
And performing Kalman filtering tracking on the target point data set to realize the estimation of the state and the number of the moving targets, and automatically allocating corresponding and unique target IDs to each moving target formed by clustering in the filtering tracking process to realize the detection and counting of the personnel in the monitored area.
According to another embodiment of the present invention, the front end rf module 100 is further configured to scan the room to be monitored N times to generate N frames of output signals to be detected, where N is a positive integer greater than or equal to 2; the central control module 200 is specifically configured to perform corresponding processing on N frames of output signals to be detected to generate N pieces of two-dimensional frequency domain information to be detected, and input the N pieces of two-dimensional frequency domain information to be detected into the indoor living body motion frequency model to perform N times of indoor living body monitoring on a room to be monitored.
According to an embodiment of the present invention, the central control module 200 is further configured to: and determining whether the number of times that the living bodies exist in the monitored room and the number of the existing living bodies is M is greater than or equal to N times, and determining that the living bodies exist in the monitored room and the number of the existing living bodies is M when the number of times that the living bodies exist in the monitored room and the number of the existing living bodies is M is greater than or equal to N times, wherein M is a positive integer, and N is less than or equal to N.
According to an embodiment of the present invention, the central control module 200 is further configured to: when a living body exists in a monitoring room, the respiratory motion frequency, the heartbeat frequency and the radar scattering sectional area of the living body are obtained, and the living body is classified according to the respiratory motion frequency, the heartbeat frequency and the radar scattering sectional area.
Specifically, in order to improve the robustness of the model and ensure that the monitoring result is more accurate, as shown in fig. 3, the room to be monitored may be scanned N times to generate N frames of output signals to be detected, and the above steps may be repeated to generate N pieces of two-dimensional frequency domain information to be detected, and the room to be monitored may be monitored for N times of indoor living body monitoring.
And determining whether the number of times that living bodies exist in the monitored room and the number of the living bodies existing in the monitored room is M is greater than or equal to N times in the scanning times N, and determining that living bodies exist in the monitored room and the number of the living bodies existing in the monitored room is M when the number of times that the living bodies exist in the monitored room and the number of the living bodies existing in the monitored room is M is greater than or equal to N times, wherein M is a positive integer, and N is less than or equal to N.
Further, if n is larger than or equal to P, P is a set number of times, and azimuth angle parameters { DOA [ n ] } of the detected target in n times are consistent, target classification processing is carried out, namely, target two-dimensional frequency domain information is processed according to a target classification function to obtain classification data of related room personnel and pets, and a threshold value of the target classification function is determined and optimized according to a deep learning algorithm. If P < n, repeat the above-mentioned process, scan the indoor space again.
Specifically, for the classification of people and pets in a room, a target classification function can be established according to the radar scattering cross sections of the people and the pets, and the inconsistency of the respiratory motion frequency and the heartbeat frequency, and a threshold value is set. The selected threshold can be subjected to iterative processing according to N times of scanning results, the immune genetic algorithm can well overcome the defect of non-convergence of multiple iterations, and the classification degree of the selected threshold is high.
According to an embodiment of the present invention, the central control module 200 is further configured to: performing three-dimensional FFT processing on the two-dimensional frequency domain information to be detected to generate three-dimensional frequency domain information to be detected; acquiring distance information and angle information of a living body according to two-dimensional frequency domain information to be detected and three-dimensional frequency domain information to be detected; and determining the position information of the living body in the room to be monitored according to the distance information and the angle information.
Specifically, when the presence of a living body in a room is monitored, two-dimensional frequency domain information X to be detectedout_ss' (w) performing FFT processing on dimension of antenna direction to generate three-dimensional frequency domain information X to be detectedout_sss' (w). According to two-dimensional frequency domain information X to be detectedout_ss' (w) and three-dimensional frequency domain information X to be detectedout_sss' (w) the MUSIC spectrum can be obtained, and the distance information and angle information of the living body can be obtained by analyzing the MUSIC spectrum. According to the obtained different angles and distances, the bed and other positions of the room area are divided, and the position information of the living body in the room can be judged.
According to an embodiment of the present invention, as shown in fig. 6, the indoor living body monitoring device 10 further includes: an alarm module 300, a communication module 400 and an indoor management module 500.
The alarm module 300 is configured to send out corresponding alarm information according to a monitoring result; the communication module 400 is configured to generate corresponding feedback information according to the monitoring result, and send the feedback information to the corresponding terminal device; the indoor management module 500 is configured to control on/off of the power devices in the room to be monitored according to the detection result.
It should be noted that, as shown in fig. 7, the communication module 400 may interact data through WiFi, ethernet, CAN, ZigBee, serial ports (RS232, RS485, RS422), 4G, and other network protocols, and send a data signal to a terminal device (guest room management center). Wherein the communication module 400 is used for communication between the central control module 200 and the indoor management module 500.
The alarm module 300 may be disposed inside the indoor living body monitoring device 10 in an internal manner, and may also be disposed outside the indoor living body monitoring device 10 in an external mounting manner, wherein related information may be transmitted to the alarm module 300 through the communication module 400 to alarm through the alarm module.
Specifically, in the practical application process, the central control module 200 may execute a corresponding control strategy according to the monitoring result and the room check-in condition.
Specifically, as a possible implementation, as shown in fig. 8, after the room card is powered on, the front-end rf module 100 starts to operate, and transmits and receives millimeter-wave signals to and from the whole room.
When it is recognized that a pet enters the room, the central control module 200 may generate corresponding feedback information, for example, "someone has the pet to enter the room," and send the feedback information to the corresponding terminal device through the communication module 400, for example, to a computer control end of a hotel front desk, and perform related prompts on the check-in person and the front desk person, so that the condition of illegal check-in exists.
And scanning the room in real time, and judging whether people exist in the current environment or not by combining the motion information and the physiological information of the living body. The bed in the room is a fixed position, the bed and other positions in the room are subjected to fixed position partition scanning, and targets of partition scanning are distinguished, wherein people detected at the bed position are resting people, and people detected at other positions are non-resting people. Correspondingly, the scan results can be divided into four states of Q1, Q2, Q3 and Q4, specifically, as shown in table 1.
TABLE 1
| Status of state | Position of bed | Other positions | Description of the invention |
| Q1 | n1 | 0 | Bed detection n1 persons, other position 0 person |
| Q2 | n2 | m1 | Bed detection n2 persons, other position m1 persons |
| Q3 | 0 | m2 | Bed detecting 0 person, other positions m2 person |
| Q4 | 0 | 0 | Bed position detecting 0 person, other position 0 person |
As shown in table 1, the state Q1 indicates that "there are n1 persons at the bed position detected and 0 person at the other positions" detected; state Q2 indicates "there are n2 persons detected at the bed position, and m1 persons detected at other positions"; state Q3 indicates "bed position detected with 0 persons, other positions with m2 persons"; state Q4 indicates "bed position detected with 0 person and other positions with 0 persons".
For the state Q1, when n1-K >0, where K is the number of checked-in persons registered in the front desk of the room, and it is indicated that the checked-in persons are greater than the number of checked-in persons registered, and there is a violation of checking-in at this time, the central control module 200 may generate corresponding feedback information, and send the feedback information to a corresponding terminal device through the communication module 400, for example, to a computer control terminal of the front desk of the hotel, and prompt passengers in the room, and timely register the information.
In the state Q2, when n2-K is 0 and m1>0, it indicates that the number of persons detected at the bed position is the same as the registered number of persons in the bed, and m1 persons exist at other positions. At this time, the positions of m1 persons at other positions can be continuously detected, wherein when a person exists in the m1 persons at the position of the room door, it indicates that the passenger is in a resting state, and there is an illegal intrusion of the person, at this time, the central control module 200 can generate corresponding feedback information, for example, "there is an illegal intrusion in the passenger room", and send the feedback information to a corresponding terminal device through the communication module 400, for example, to a computer control terminal of a hotel front desk, and send a control instruction to the alarm module 300, so as to control the alarm module 300 to give an alarm to the passenger at rest in the room, and at the same time, the alarm module 300 can give a telephone prompt to the front desk center; when n2-K is less than 0, and n2+ m1 is equal to K, it indicates that some persons in the room have a rest in the bed, and some persons are in other positions in the room, the number of persons in the room is equal to the number of registered persons, and the normal case of the person in the room is the case of the person in the room; when n2-K is less than 0, and n2+ m1 is equal to K, it is indicated that a part of the persons who enter the room have a rest in the bed, but the number of the persons who have a rest is less than the number of the registered persons who enter the room, it is indicated that the persons are still moving, the other part of the persons are in other positions in the room, the total number of the persons in the room is more than the number of the registered persons who enter the room, and at this time, the guests visit and the normal entering situation exist.
In the state Q3, no person at the time of detection is in a rest state, m2>0, and therefore, in this case, the size of m2 is determined, and when m2> K, it means that a guest has visited or entered the door, and when m2< K, it means that the person is not completely in the room after registration at this time, and registration is not affected.
For the state Q4, it is detected that there is no person in the room, and therefore, the central control module 200 may send the information to the indoor management module 500 to control the corresponding power device in the room to be turned off through the indoor management module 500, and only when it is detected that there is a person entering the room, the indoor management module 500 controls the corresponding power device in the room to be turned on again, so that the corresponding power device in the room is turned off when it is monitored that there is no person in the room, and the cost of power resources is saved.
Therefore, the indoor living body monitoring device provided by the embodiment of the utility model adopts the scheme of single-chip integration of the radio frequency front end and the central control module, so that the radar system is small in design and appearance, convenient to install and low in power consumption; can the real-time supervision guest room in the actual number of living and carry the pet figure, and give back this information to hotel proscenium management, and to surging violating the regulations and carrying out the suggestion, guaranteed to live personnel and register safety, monitor the illegal personnel condition of breaking into simultaneously, ensured resting personnel's property and life safety, and under the unmanned circumstances in monitoring room, can also close the corresponding power equipment in room, saved the power resource cost.
It should be noted that the utility model discloses indoor living body monitoring devices 10 can carry out different settings according to indoor overall arrangement, for example, as shown in fig. 9, indoor living body monitoring devices 10 can set up respectively in bedroom and bathroom, adopts multi-device cascade to unify the indoor living body target number who detects and gathers to central control module, from this, can ensure that radar system can scan any corner in the room, has avoided the interference that seat and other debris brought the living body monitoring in the room. The intelligent monitoring system can monitor passengers and pets in a room in real time no matter in a sleep rest state or an active state, can stably and accurately detect target information, and can show excellent living body identification performance by the millimeter wave radar in a narrow and complex space of the room.
In conclusion, according to the utility model discloses indoor living body monitoring devices, through the front end radio frequency module to indoor transmission first chirp signal, and receive the second chirp signal of reflection on the reflection path that corresponds, and generate output signal according to first chirp signal and second chirp signal, and handle output signal through central control module, with generate two-dimensional frequency domain information, and establish indoor living body motion frequency model according to two-dimensional frequency domain information, and treat according to indoor living body motion model and monitor the room and carry out indoor living body monitoring. From this, not only can accurately carry out the live body monitoring to the room effectively, can avoid appearing invading the condition of tenant privacy effectively moreover.
Correspond the indoor live body monitoring devices of above-mentioned embodiment, the utility model discloses still provide an indoor live body monitoring method.
As shown in fig. 10, the method for monitoring living body indoors according to the embodiment of the present invention may include the following steps:
and S1, transmitting the first chirp signal to the indoor and receiving the second chirp signal reflected on the corresponding reflection path.
S2, an output signal is generated based on the first chirp signal and the second chirp signal.
And S3, performing corresponding processing on the output signal to generate two-dimensional frequency domain information, and establishing an indoor living body motion frequency model according to the two-dimensional frequency domain information.
And S4, performing indoor living body monitoring on the room to be monitored according to the indoor living body motion frequency model.
It should be noted that, the details not disclosed in the indoor living body monitoring method according to the embodiment of the present invention refer to the details disclosed in the indoor living body monitoring device according to the embodiment of the present invention, and the details are not described herein.
According to the utility model discloses indoor live body monitoring method, to indoor transmission first chirp signal, and receive the second chirp signal of reflection on the reflection path that corresponds, and according to first chirp signal and second chirp signal generation output signal, and carry out corresponding processing to output signal, with two-dimensional frequency domain information of generation, and according to two-dimensional frequency domain information set up indoor live body motion frequency model, and treat according to indoor live body motion frequency model and monitor the room and carry out indoor live body monitoring. From this, not only can accurately carry out the live body monitoring to the room effectively, can avoid appearing invading the condition of tenant privacy effectively moreover.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The meaning of "plurality" is two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present invention includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (4)
1. An indoor living body monitoring device, comprising:
the front-end radio frequency module is used for transmitting a first linear frequency modulation pulse signal indoors, receiving a second linear frequency modulation pulse signal reflected on a corresponding reflection path, and generating an output signal according to the first linear frequency modulation pulse signal and the second linear frequency modulation pulse signal;
and the central control module is used for processing the output signal to generate two-dimensional frequency domain information, establishing an indoor living body motion frequency model according to the two-dimensional frequency domain information, and carrying out indoor living body monitoring on a room to be monitored according to the indoor living body motion model.
2. The indoor living body monitoring device according to claim 1, further comprising:
and the alarm module is used for sending out corresponding alarm information according to the monitoring result.
3. The indoor living body monitoring device according to claim 2, further comprising:
and the communication module is used for generating corresponding feedback information according to the monitoring result and sending the feedback information to corresponding terminal equipment.
4. The indoor living body monitoring device according to claim 2, further comprising:
and the indoor management module is used for controlling the on/off of the power equipment in the room to be monitored according to the monitoring result.
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