CN113433543A - Intelligent seat board for detecting sedentary state of human body and detection method - Google Patents
Intelligent seat board for detecting sedentary state of human body and detection method Download PDFInfo
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- G—PHYSICS
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- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
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- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/08—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
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Abstract
An intelligent seat card comprising: the device comprises a main control module, and a detection module, a storage module, an interface display module, an indication reminding module, a timing module and a communication module which are electrically connected with the main control module; the detection module is used for detecting the sedentary state of the human body; the storage module is used for prestoring the posture profile data of each angle when a person faces the intelligent seat plate and sits on the seat; the interface display module is used for displaying employee information, meeting notification information and/or sedentary state reminding information; the indication reminding module is used for sending out sound, light and/or vibration reminding signals when detecting that the human body is in a sedentary state; the timing module is used for recording the time when a person is on the seat and the time when the person leaves the seat; the communication module is used for communicating with the background server and the mobile terminal.
Description
Technical Field
The invention belongs to the field of seat cards, and particularly relates to an intelligent seat card.
Background
With the increasing popularization of automatic office work, the office work of enterprise employees is mainly performed by indoor office work, usually by computers sitting in front of seats, and the long-time computer office work in front of the seats can bring various sub-health problems of various parts such as waist, neck, shoulders and the like to the employees; meanwhile, after long-time sitting, the blood in the body is concentrated in the lower half of the body, the blood flowing and circulating speed is reduced, and the upper half of the body is easy to have insufficient blood supply, so that not only is the health greatly damaged, but also the working efficiency is gradually reduced.
Currently, more and more businesses and employees have become increasingly aware of this problem, and various types of sedentary reminders have also emerged. In the prior art, most sedentariness reminding devices can be realized only by means of wearable equipment, and the purpose of sedentariness reminding is achieved by accurately measuring various physiological parameters of a human body through the wearable equipment. This kind of technique often because need wear specific equipment or contact with the human body through equipment, often the operation is comparatively troublesome, leads to the actual availability factor to be lower, and brings unnecessary trouble for staff's official working. Some sedentariness reminding devices collect human body parameters such as respiration and heartbeat through a non-contact sensor or detect human body states in an infrared mode, or perform image recognition through a complex algorithm to finish the purpose of sedentariness reminding, for example, an optical camera acquires external images and performs human body state detection through algorithm operation.
Disclosure of Invention
In view of the problems of low use efficiency and high cost in the prior art, the invention provides the intelligent seat plate for detecting the sedentary state of the human body and the detection method.
The technical scheme of the invention is as follows: an intelligent seat card comprising: the device comprises a main control module, and a detection module, a storage module, an interface display module, an indication reminding module, a timing module and a communication module which are respectively and electrically connected with the main control module;
the interface display module comprises a display screen and corresponding circuit elements, wherein the display screen is used for displaying the identity of the employee, the conference notice and other related information and/or providing reminding information such as sedentary state.
The indication reminding module is used for sending out reminding signals such as sound, light and/or vibration when detecting that the human body reaches a sedentary state.
The timing module is used for recording the time of the staff on the seat and the time of leaving the seat.
The communication module comprises a wireless communication unit, is used for communicating with the background server and the mobile terminal, and for example, sends the return seat reminding data to the mobile terminal through the wireless communication unit; meanwhile, data such as seat leaving time and the like can be sent to the background server, and data such as conference notification and the like can be received from the background server.
The storage module comprises a storage unit for prestoring the posture profile data of each angle when the staff sits on the seat.
The detection module is used for detecting human sedentariness state, includes: a millimeter wave radar; the millimeter wave radar includes: a repetition interval pulse signal generator, a pulse signal receiver and an antenna array; the repetition interval pulse signal generator sends millimeter waves through the antenna array, and the pulse signal receiver receives millimeter wave signals reflected back through the antenna array and sends the reflected signals to the main control module. Because the millimeter wave signal is not influenced by light, sunshine and other environments, the reliability and the use efficiency are greatly improved.
The antenna array may further comprise a plurality of transmit sub-apertures coupled to the repetition interval pulse signal generator and a plurality of receive sub-apertures coupled to the pulse signal receiver; the repetition interval pulse signal generator generates pulse radar signals with a preset transmission period and transmits the pulse radar signals by a plurality of transmitting sub-apertures; the plurality of receiving sub-apertures respectively receive reflected signals of the millimeter waves emitted by the emitting sub-apertures after the millimeter waves are reflected by a human body facing to one side of the front face of the intelligent seat plate. The pulse signal receiver receives a reflected signal from each of the plurality of receiving sub-apertures and sends the reflected signal to a master control module.
When a worker comes to a seat and sits down to start working, the detection module receives a reflection signal through the millimeter wave radar and sends the transmission signal to the main control module, the main control module analyzes and calculates the reflection profile and then compares the reflection profile with the posture profile data of each angle of the worker sitting on the seat prestored in the storage module, if the judgment is consistent, the worker is judged to sit on the seat, the timing module starts to record the time of sitting on the seat, and when the time exceeds the preset time, the human body is judged to reach a long-time sitting state; the reminding module sends out sound, light and/or vibration information to remind workers.
A method for detecting the sedentary state of a human body through the intelligent seat plate comprises the following steps: the detection module transmits a pulse radar signal and receives a reflected signal, then the reflected signal data is sent to the main control module, the main control module calculates a reflected contour and then compares the reflected contour with the posture contour data, if the reflected contour is consistent with the posture contour data, the person is judged to sit on the seat, the time of sitting on the seat is recorded, and when the time exceeds the preset time, the person is judged to reach a sedentary state. The process of calculating the reflection profile includes: the main control module receives the reflection signal, generates a time domain signal of a channel corresponding to the reflection signal, generates a plurality of overlapped beams of each signal reflection point according to the reflection signal and the time domain signal, further calculates a distance matrix of each signal reflection point of each channel, and calculates a distance-Doppler domain image of each signal reflection point through a Doppler compression function according to the distance matrix of each signal reflection point; and executing target detection processing on the output of the Doppler compression function of each channel, detecting each signal reflection point through a plurality of parallel target detection signal processing paths, discarding each signal reflection point beyond a preset range, and drawing a reflection profile according to each signal reflection point which is obtained by multiple detections and conforms to the preset range. The reflection outline is compared with the posture outline of each angle of the intelligent seat board when the person faces the seat, the posture outline is pre-stored in the storage module, if the posture outline is consistent with the posture outline, the person is judged to sit on the seat, the time of the person sitting on the seat is recorded and detected by the timing module, when the time of the person sitting on the seat exceeds the preset time, the interface display module displays the sedentary state reminding information, and the reminding module is indicated to send out sound, light and/or vibration reminding signals.
When the detection result is not matched with the pre-stored posture outline of each angle when the person faces the intelligent seat plate and sits on the seat, the person is judged to leave the seat at the moment, and the timing module starts to record the time of leaving the seat until the person is detected to sit on the seat again; and when the time of leaving the seat exceeds the preset time, sending a seat returning reminding message to the mobile terminal through the communication module to remind the staff of returning the seat. The intelligent seat board synchronizes the working state of the staff to the intelligent seat board through the communication module, the intelligent seat board adjusts the working state of the detection module according to the working state of the staff, when the staff is normally on duty, the pulse signals are continuously transmitted according to a preset period to detect the sedentary state of the human body, and when the staff is in a meeting or an outwork state, the detection is stopped; and when the working state of the staff is on duty, the intelligent seat board can record the time of the staff leaving the seat, and when the time of leaving the seat exceeds the preset time, the intelligent seat board sends a reminding message to the mobile terminal to remind the staff of leaving the seat for too long.
The invention provides an intelligent seat plate for detecting the sedentary state of a human body and a detection method, wherein a millimeter wave radar comprising a pulse signal generator with repeated intervals, a pulse signal receiver, a plurality of transmitting sub-apertures coupled to the pulse signal generator with repeated intervals and a plurality of antenna arrays coupled to the receiving sub-apertures of the pulse signal receiver is used for transmitting and receiving reflected signals, and the reflection profile of each reflection point is calculated and compared with preset posture profile data to detect the sedentary state.
Drawings
Fig. 1 is a schematic diagram of an overall architecture of an intelligent seat plate provided by an embodiment of the present application;
FIG. 2 is a schematic process flow diagram of a process for detecting a person sitting in a seat according to an embodiment of the present application;
FIG. 3 is a schematic process flow diagram provided by an embodiment of the present application when a person is detected to be out of a seat;
fig. 4 is a schematic view of a communication framework between an intelligent seat card and a mobile terminal and a background server according to an embodiment of the present application.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to specific examples, and it is apparent that the described examples are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person skilled in the art without inventive step are within the scope of protection of the present invention.
An intelligent seat board provided by the embodiment of the invention is shown in fig. 1 and comprises: the device comprises a main control module, and a detection module, a storage module, an interface display module, an indication reminding module, a timing module and a communication module which are electrically connected with the main control module;
the interface display module comprises a display screen and corresponding circuit elements, wherein the display screen can be an ink screen and an LED screen and is used for displaying staff information in a normal working state, and when the intelligent seat plate communication module receives a meeting notice from the background server, the intelligent seat plate communication module is also used for displaying meeting notice information and displaying sedentary state reminding information when detecting that a human body is in a sedentary state.
The indication reminding module comprises a warning lamp, a loudspeaker and/or a vibration motor and corresponding circuit elements and is used for sending out sound, light and/or vibration reminding signals when detecting that the human body is in a sedentary state.
The timing module is used for recording the time when a person is on the seat and the time when the person leaves the seat. Recording of the time of sitting on the seat is started when it is first detected that a person is sitting on the seat, when the time reaches a preset sedentary time, for example: sedentary time can be set to 2 hours; and then the time is sent to the main control module, the main control module controls the interface display module to display the sedentary state reminding information, and the reminding module is indicated to send out reminding signals such as sound, light and/or vibration. When the people sees sedentary reminding signal and leaves the seat rest, for taking into account work efficiency this moment, prevent that the staff from leaving the seat for a long time, when detecting that the people has left the seat, the timing module is starting to record the time of leaving the seat, when the time of leaving the seat reaches the warning time that sets up in advance, for example: the reminder time when leaving the seat can be set to 20 minutes; and sending the time to a main control module, and sending the reminding information to a mobile terminal held by the staff by the main control module through a communication module to remind the staff to return to the seat to carry out work. The communication module comprises a wireless communication unit, the wireless communication unit is used for communicating with the background server and the mobile terminal, sending the seat returning reminding data to the mobile terminal through the wireless communication unit, sending the seat leaving time data to the background server and receiving the conference notification data from the background server.
The storage module comprises a storage unit, and in a specific embodiment, the storage unit is a storage device such as a Flash memory, an SRAM (static random access memory) or a ROM (read only memory); the intelligent seat sign is used for prestoring the posture profile data of each angle when a person sits on the seat facing the intelligent seat sign.
The detection module is used for detecting human sedentariness state, includes: a millimeter wave radar; the millimeter wave radar includes: a repetition interval pulse signal generator, a pulse signal receiver and an antenna array;
the antenna array comprises a plurality of transmit sub-apertures coupled to the repetition interval pulse signal generator and a plurality of receive sub-apertures coupled to the pulse signal receiver; the repetition interval pulse signal generator generates pulse radar signals with a preset transmission period and transmits the pulse radar signals by a plurality of transmitting sub-apertures; in one embodiment, to prevent mutual interference between channels, it is possible to generate pulse signals with different frequencies, and each transmit sub-aperture transmits pulse signals with different frequencies.
The plurality of receiving sub-apertures respectively receive reflected signals of the millimeter waves emitted by the emitting sub-apertures after the millimeter waves are reflected by a human body facing to one side of the front face of the intelligent seat plate. The pulse signal receiver receives a reflected signal from each of the plurality of receiving sub-apertures and sends the reflected signal to a master control module.
Under one embodiment, the method for detecting the sedentary state of the human body through the intelligent seat plate comprises the following steps: the detection module transmits a pulse radar signal and receives a reflected signal, then the reflected signal data is sent to the main control module, the main control module calculates a reflected contour and then compares the reflected contour with the posture contour data, if the reflected contour is consistent with the posture contour data, the person is judged to sit on the seat, the time of sitting on the seat is recorded, and when the time exceeds the preset time, the person is judged to reach a sedentary state. The process of calculating the reflection profile includes: the main control module receives the reflection signal, generates a time domain signal of a channel corresponding to the reflection signal, generates a plurality of overlapped beams of each signal reflection point according to the reflection signal and the time domain signal, further calculates a distance matrix of each signal reflection point of each channel, and calculates a distance-Doppler domain image of each signal reflection point through a Doppler compression function according to the distance matrix of each signal reflection point; executing target detection processing on the output of the Doppler compression function of each channel, detecting each signal reflection point through a plurality of parallel target detection signal processing paths, abandoning each signal reflection point beyond a preset range, drawing a reflection profile according to each signal reflection point which is obtained by multiple detections and accords with the preset range, and comparing the reflection profile with the posture profile of each angle, which is prestored in a storage module and is used when a person faces the intelligent seat plate to sit on the seat. As shown in fig. 2, if the reflection profile matches the comparison result of the posture profiles of the angles, which are pre-stored in the storage module, of the person sitting on the seat facing the intelligent seat plate, it is determined that the person is sitting on the seat, the time for the person to sit on the seat is recorded and detected by the timing module, and when the time for the person to sit on the seat exceeds the preset time, a reminding message is sent. In a specific embodiment, the reminding information can display the sedentary state reminding information through the interface display module, and simultaneously instruct the reminding module to send out sound, light and/or vibration reminding signals.
As shown in fig. 3, when the detection result does not match the pre-stored posture profile of each angle of the person sitting on the seat facing the intelligent seat plate, it is determined that the person has left the seat at the time, and the timing module starts to record the time of leaving the seat until the sitting on the seat is detected again; and when the time of leaving the seat exceeds the preset time, sending a seat returning reminding message through the communication module to remind the staff of returning the seat. In a specific embodiment, the employee is reminded to return the seat by sending a return seat reminding message to the mobile terminal held by the employee through the communication module. The mobile terminal can be a mobile phone, and the employee downloads a corresponding APP capable of recording the working state of the employee on the mobile phone, for example: working states such as on duty, leave asking, field work and the like. Fig. 4 shows a schematic diagram of a communication framework between an intelligent seat plate and a mobile terminal and a background server, wherein the intelligent seat plate synchronizes the working state of a staff to the intelligent seat plate from the background server or the mobile terminal through a communication module, the intelligent seat plate adjusts the working state of a detection module according to the working state of the staff, when the staff is normally on duty, the detection of the sitting state of the human body is performed according to a pulse signal continuously transmitted in a preset period, and when the staff is in a meeting or an outing state, the detection is stopped; and when the working state of the staff is on duty, the intelligent seat board records the time of the staff leaving the seat, and when the time of leaving the seat exceeds the preset time, the intelligent seat board sends a reminding message to the mobile terminal to remind the staff of leaving the seat for too long time, and sends the time data of leaving the seat to the background server. In a specific embodiment, the preset time may also be set to a certain interval range, for example, 10 to 30 minutes, and multiple reminders are sent according to the length of time for leaving the seat, and when the time for leaving the seat exceeds the upper limit, the time data of leaving the seat of the employee is sent to the background server, so as to manage the working condition of the employee.
It is to be noted that when referring to the present invention, such terms as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (11)
1. An intelligent seat plate for detecting a sedentary state of a human body, comprising: the device comprises a main control module, and a detection module, a storage module, an interface display module, an indication reminding module, a timing module and a communication module which are respectively and electrically connected with the main control module;
the detection module is used for detecting the sedentary state of the human body;
the storage module is used for prestoring gesture profile data of each angle when a person faces the intelligent seat plate and sits on the seat;
the interface display module is used for displaying employee information and/or providing reminding information;
the indication reminding module is used for sending out a reminding signal when detecting that the human body reaches a sedentary state;
the timing module is used for recording the time when a person is on the seat and the time when the person leaves the seat;
the communication module is used for communicating with the background server and the mobile terminal;
the method is characterized in that: the detection module comprises: a millimeter wave radar, the millimeter wave radar comprising: the radar signal transmitting and receiving device comprises a pulse signal generator with repeated intervals, a pulse signal receiver and an antenna array for transmitting and receiving pulse radar signals; the repetition interval pulse signal generator sends millimeter waves through the antenna array, and the pulse signal receiver receives millimeter wave signals reflected back through the antenna array and sends the reflected signals to the main control module.
2. The intelligent seat sign according to claim 1, wherein: the antenna array includes a plurality of transmit sub-apertures coupled to the repetition interval pulse signal generator and a plurality of receive sub-apertures coupled to the pulse signal receiver.
3. The intelligent seat sign according to claim 2, wherein: the repetition interval pulse signal generator generates pulse radar signals with a preset transmission period and transmits the pulse radar signals by a plurality of transmitting sub-apertures; and the receiving sub-apertures respectively receive reflected signals of pulse signals transmitted by the transmitting sub-apertures after the pulse signals are reflected by a human body.
4. The intelligent seat post of claim 3, wherein: the pulse signal receiver receives a reflected signal from each of the plurality of receive sub-apertures and sends the reflected signal to the master control module.
5. A method for detecting the sedentary state of a human body through the intelligent seat board as claimed in any one of claims 1 to 4, wherein the method comprises the following steps: the detection module transmits pulse millimeter wave radar signals and receives reflected signals, then sends the reflected signal data to the main control module, the main control module calculates a reflection profile and then compares the reflection profile with the posture profile data, if the reflection profile is consistent with the posture profile data, the person is judged to sit on the seat, the time of sitting on the seat is recorded, and when the time exceeds the preset time, the person is judged to reach a sedentary state.
6. The method of claim 5, wherein: the method of calculating the reflection profile comprises: the main control module receives the reflection signal, generates a time domain signal of a channel corresponding to the reflection signal, generates a plurality of overlapped beams of each signal reflection point according to the reflection signal and the time domain signal, further calculates a distance matrix of each signal reflection point of each channel, and calculates a distance-Doppler domain image of each signal reflection point through a Doppler compression function according to the distance matrix of each signal reflection point; and executing target detection processing on the output of the Doppler compression function of each channel, detecting each signal reflection point through a plurality of parallel target detection signal processing paths, discarding each signal reflection point beyond a preset range, and drawing a reflection profile according to each signal reflection point which is obtained by multiple detections and conforms to the preset range.
7. The method of claim 5, wherein: after the human body is judged to be in the sedentary state, the intelligent seat board sends out a reminding signal.
8. The method of claim 7, wherein: the reminding signal comprises: the interface display module displays sedentary state reminding information and indicates the reminding module to send out sound, light and/or vibration reminding signals.
9. The method of claim 5, wherein: and the main control module compares the reflection profile with the posture profile data, if the reflection profile and the posture profile do not accord with each other, the main control module judges that the person leaves the seat at the moment, and the timing module starts to record the time of leaving the seat until the person is detected to sit on the seat again.
10. The method of claim 9, wherein: and when the time for leaving the seat exceeds the preset time, sending a seat returning reminding message to the mobile terminal through the communication module to remind the staff of returning the seat.
11. The intelligent seat post of claim 10, wherein: the communication module is also used for synchronizing the working state of the staff and detecting the sedentary state only when the staff is in a normal on duty state.
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| CN202010145593.6A CN113433543A (en) | 2020-03-05 | 2020-03-05 | Intelligent seat board for detecting sedentary state of human body and detection method |
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| CN202010145593.6A CN113433543A (en) | 2020-03-05 | 2020-03-05 | Intelligent seat board for detecting sedentary state of human body and detection method |
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