CN110327052B - Sign monitoring system based on intelligent seat - Google Patents
Sign monitoring system based on intelligent seat Download PDFInfo
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- CN110327052B CN110327052B CN201910555478.3A CN201910555478A CN110327052B CN 110327052 B CN110327052 B CN 110327052B CN 201910555478 A CN201910555478 A CN 201910555478A CN 110327052 B CN110327052 B CN 110327052B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1118—Determining activity level
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
- A61B5/18—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state for vehicle drivers or machine operators
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
- A61B5/6891—Furniture
Abstract
The invention relates to a sign monitoring system based on an intelligent seat, which comprises a signal input unit, a background noise unit, a signal acquisition and front-end processing unit, a wireless signal transmitting unit, a cloud database and a vehicle-mounted database, wherein the signal input unit is a non-invasive sensor arranged at the back and the cushion of the intelligent seat and comprises a plurality of groups of polarized polymer films made of flexible electromechanical transduction materials, the background noise unit is a non-invasive sensor arranged at the rest positions of the intelligent seat and comprises a group of polarized polymer films made of flexible electromechanical transduction materials and a vibrator arranged at the middle position of the films, and the signal acquisition and front-end processing unit processes acquired signals to convert the acquired signals into fatigue signs of a human body and sends the results to the cloud database and the vehicle-mounted database through the wireless signal transmitting unit for feedback. Compared with the prior art, the method has the advantages of high sensitivity, capability of acquiring more accurate human fatigue sign information and the like.
Description
Technical Field
The invention relates to the technical field of functional devices, in particular to a physical sign monitoring system based on an intelligent seat.
Background
In daily life, standing and sitting postures are the basis of human activities. Among them, the sitting posture is a behavior mainly generated depending on the seat (the lying posture is an extension of the sitting posture). By collecting the medical characteristic quantity of the sitting posture, the system can intervene or feed back the people keeping the active sitting posture or prompt other people to feed back the people in the passive sitting posture. For example, in a hospital, a patient is often in a hospital bed or a wheelchair, and through monitoring and feedback of vital signs, hospital staff or related personnel can be prompted in time to assist treatment or rehabilitation of the patient; in daily life, such as work, fatigue signs generated by workers keeping sitting postures for a long time can be monitored, the workers are prompted to have proper rest or activity, and the work quality and efficiency are improved; or during sleep, the sleep quality of the person is reflected by the monitored physical signs; in the process of using the vehicle, for passengers, especially for passengers with diseases, vital signs of the passengers need to be monitored, and sudden conditions are handled timely; this monitoring is also of considerable importance to the driver, for example, in cases where the driver is suffering from a sudden illness, where the driver may be assisted in parking safely and doing a task to keep passengers out, and in other cases where monitoring and feedback on specific signs is required.
The fatigue driving seriously jeopardizes the road traffic safety, the accident risk in the fatigue driving state is high, the accident consequence is serious under the condition of frequent fatigue driving, and the fatigue driving problem is legally difficult to solve due to the deficiency of the fatigue driving objective measurement method. Therefore, the fatigue driving problem is mainly prevented, a vehicle-mounted fatigue monitoring system is developed, the state of a driver is monitored in real time, and intervention is made, so that the method is an important and effective means for preventing fatigue driving. Wherein a fatigue monitoring system is the core of this approach. The fatigue monitoring indexes can be classified into invasive indexes or non-invasive indexes, the traditional measuring method of the invasive indexes can interfere with normal driving, and the measuring method of the new generation of non-invasive indexes requires that the normal driving is not interfered in the measurement and is more suitable for the actual application condition, so that the problem that the prior art is urgently needed to solve is to research a sensing part which has the characteristics of light weight, good flexibility, thin film type and the like in the measuring method.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a physical sign monitoring system based on an intelligent seat.
The purpose of the invention can be realized by the following technical scheme:
a smart seat based vital signs monitoring system comprising:
(1) the sensor module of setting on intelligent seat body, this module includes:
the signal input unit is used for acquiring the signals of a seat back and a seat cushion of a driver in the driving process according to a non-invasive sensor arranged at the position of the seat back or the seat cushion of the intelligent seat, the non-invasive sensor of the signal input unit comprises a plurality of groups of polarized polymer films made of flexible electromechanical transduction materials, the polarized polymer films are arranged in a double-sided conductive single-sided adhesive tape after being connected through a conductive double-sided adhesive tape, a conductive electrode is led out from the polarized polymer films, and a conductive electrode is led out from the double-sided conductive single-sided adhesive tape;
preferably, the signal input unit includes one, two or three sets of polarized polymer films, each set including two polarized polymer films having the same area.
The background noise unit is used for acquiring background noise signals according to non-invasive sensors arranged at other positions of the intelligent seat, the non-invasive sensors of the background noise unit comprise a group of polarized polymer films made of piezoelectric electret materials, the polarized polymer films are arranged in a double-sided conductive single-sided adhesive tape which is folded in half after being connected through a conductive double-sided adhesive tape, conductive electrodes are led out of the polarized polymer films, the conductive electrodes are led out of the double-sided conductive single-sided adhesive tape, the double-sided conductive single-sided adhesive tape is installed on a U-shaped support, and a vibrator is arranged at the center of the double-sided conductive single-sided adhesive tape. Preferably, the background noise unit is arranged on the back side of the chair back, the back side of the headrest or right below the chair of the intelligent chair.
And the signal acquisition and front-end processing unit is used for collecting and processing the signals acquired by the signal input unit and the background noise unit.
And the wireless signal transmitting unit is used for wirelessly transmitting the results processed by the signal acquisition and front-end processing unit.
(2) And a cloud database: and the processing unit is used for receiving the processing result sent by the wireless signal transmitting unit under the wifi condition.
(3) And a vehicle-mounted database: the wireless signal transmitting unit is used for receiving the processing result sent by the wireless signal transmitting unit under the non-wifi condition.
In the driving process of a driver, the signal input unit acquires medical characterization signals of human bodies at the chair back and the chair cushion, the background noise unit acquires background noise signals, the signals are processed and converted into human fatigue signs through the signal acquisition and front-end processing unit, the acquired results are sent to the cloud database or the vehicle-mounted database through the wireless signal transmitting unit, and feedback and intervention are made by combining the converted human fatigue signs.
The preparation process of the signal input unit of the non-invasive sensor comprises the following steps:
1) selecting a polymer film material, carrying out uniform polarization treatment on the film through grid charging, and carrying out thermal aging treatment to prepare one group, two groups or three groups of polarized polymer films with the same area;
2) attaching a layer of conductive double-sided adhesive to the charged side of the first polarized polymer film, leading out a first conductive electrode from the conductive double-sided adhesive, and protecting the first conductive electrode by adopting an insulating material;
3) bonding the charged side of the second polarized polymer film with the other side of the conductive double-sided adhesive tape in the step 2);
4) if two groups or three groups of polarized polymer films are adopted, the other group or two groups of polarized polymer films form the polarized polymer films with a double-layer structure according to the steps 2) to 3), the polarized polymer films of all groups are arranged side by side, and the electrodes led out from the previous group are connected into the conductive double-sided adhesive tape used by the next group;
5) and placing the first polarized polymer film and the last polarized polymer film in the double-folded double-sided conductive single-sided adhesive tape, and leading out another conductive electrode from the double-sided conductive single-sided adhesive tape to obtain a signal input unit of the non-invasive sensor of the flexible film.
Preferably, when one set of polarized polymer films is used, the length of the double-sided conductive single-sided tape is 42cm, and the width of the double-sided conductive single-sided tape is 5.2cm, when two sets of polarized polymer films are used, the length of the double-sided conductive single-sided tape is 82cm, and the width of the double-sided conductive single-sided tape is 5.2cm, and when three sets of polarized polymer films are used, the length of the double-sided conductive single-sided tape is 42cm, and the width of the double-sided conductive single-sided tape is 15 cm.
The preparation process of the background noise unit of the non-invasive sensor comprises the following steps:
1) selecting a polymer film material, carrying out uniform polarization treatment on the film through grid charging, and carrying out thermal aging treatment to prepare a group of polarized polymer films with the same area;
2) attaching a layer of conductive double-sided adhesive to the charged side of the first polarized polymer film, leading out a first conductive electrode from the conductive double-sided adhesive, and protecting the first conductive electrode by adopting an insulating material;
3) bonding the charged side of the second polarized polymer film with the other side of the conductive double-sided adhesive tape in the step 2);
4) and placing a group of polarized polymer films in the folded double-sided conductive single-sided adhesive tape, leading out another conductive electrode from the double-sided conductive single-sided adhesive tape, installing the double-sided conductive single-sided adhesive tape on the U-shaped bracket, and arranging a vibrator at the center position of the double-sided conductive single-sided adhesive tape to obtain a background noise unit of the non-invasive sensor of the flexible film.
Preferably, the area of said polarised polymer film is 20cm x 4 cm.
Preferably, the contact area of the conductive electrode is 1cm x 1cm, the width of the wire is 1cm, and the length of the wire is 4.5 cm.
Compared with the prior art, the invention has the following advantages:
1) the signal input unit of the invention adopts a sensor formed by flexible electromechanical transduction materials (such as flexible piezoelectric electret films) to meet the requirements of a new generation of non-invasive sensors, has light weight and good flexibility, can be made into any shape and size, can improve the sensitivity of the sensor, can still acquire the medical characterization information of a human body within a certain distance even if not directly contacting the human body, and is more suitable for the actual application condition;
2) the placement positions of the non-invasive sensor and the background noise unit of the signal input unit are flexible (such as a chair cushion and a backrest), a plurality of flexible film type sensors can be arranged at different positions to prove mutually, meanwhile, when the non-invasive sensor is in contact with a human body, signals received by the non-invasive sensor contain signals of required medical representation and stray signals such as vehicle running and bumping signals, when an oscillator (without medical representation signals) is used, the signal input unit can only receive the stray signals such as vehicle running and bumping signals, the stray signals can be collected by the sensor, further, signals generated in the running process of an automobile can be removed, and more accurate human body fatigue sign information can be obtained;
3) the invention has simple structure, low cost and wide application range.
Drawings
FIG. 1 is a connection block diagram of a sensor module in a smart seat based sign monitoring system according to the present invention;
FIG. 2 is a data flow diagram of a smart chair based vital signs monitoring system according to the present invention;
fig. 3 is a schematic structural diagram of a signal input unit in embodiment 1 of the present invention;
FIG. 4 is a schematic diagram of installation positions of a signal input unit and a background noise unit in the intelligent seat based physical sign monitoring system of the present invention;
FIG. 5 is a schematic diagram of an external connection relationship of a signal input unit in the intelligent seat based physical sign monitoring system of the present invention;
FIG. 6 is a schematic diagram of an external connection relationship of a background noise unit in the intelligent seat based physical sign monitoring system of the present invention;
the reference numbers in the figures indicate:
1. the multifunctional chair comprises a first polarized polymer film, 2, a conductive double-sided adhesive tape, 3, a first conductive electrode, 4, a second polarized polymer film, 5, a double-sided conductive single-sided adhesive tape, 6, a second conductive electrode, 7, a chair back, 8, a chair cushion, 9, a signal input unit, 10, a background noise unit, 11, a headrest, 12, an intelligent chair, 13, limbs, 14, clothes, 15, a signal input unit, 16, a background noise unit, 17, a vibrator, 18 and a U-shaped bracket.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
Example 1
As shown in fig. 1 and 2, the invention relates to a physical sign monitoring system based on an intelligent seat, which comprises a sensor module, a cloud database and a vehicle-mounted database. The sensor module is arranged on the intelligent seat body, and is in wireless connection with the cloud database and the vehicle-mounted database.
The sensor module comprises a signal input unit, a background noise unit, a signal acquisition and front-end processing unit and a wireless signal transmitting unit. The intelligent seat body is provided with a seat back and a seat cushion, the signal input unit is installed at the seat back 7 or the seat cushion 8, and background noise units can be arranged at other positions of the seat body, such as the back side of the seat back 7, the back side of a headrest 11, the right lower side of the seat and the like.
The signal acquisition and front-end processing unit is respectively in wireless connection with the signal input unit and the background noise unit, is in wireless connection with the vehicle-mounted database through the wireless signal transmitting unit and is in wireless data communication with the cloud database. The wireless signal transmitting unit is connected with the signal acquisition and front-end processing unit, and the wireless signal transmitting unit can be arranged on the intelligent seat body or in the vehicle body.
The signal input unit is a non-invasive sensor which is made of flexible electromechanical transduction material (preferably flexible piezoelectric electret film), as shown in fig. 3, and comprises a first polarized polymer film 1, a conductive double-sided adhesive tape 2, a first conductive electrode 3, a second polarized polymer film 4, a double-sided conductive single-sided adhesive tape 5 and a second conductive electrode 6.
The specific preparation process comprises the following steps:
(1) selecting a polymer film material, such as a flexible piezoelectric electret film, and uniformly polarizing the film by grid charging to prepare two polymer films 1 and 4 with the same area polarization of 20cm by 4 cm.
(2) A layer of conductive double-sided adhesive tape 2(19cm x 3.5cm) is attached to the charged side of the first polarized polymer film 1, a first conductive electrode 3 is led out from the conductive double-sided adhesive tape 2, the contact area is 1cm x 1cm, the wiring width is 1cm, the wiring length is 4.5cm, and the first conductive electrode 3 is protected by adopting an insulating material.
(3) The charged side of the second polarized polymer film 4 is bonded to the other side of the conductive double-sided tape 2.
(4) A first polarized polymer film 1 and a second polarized polymer film 4 with a double-layer structure are placed in a double-folded double-sided conductive single-sided tape 5 (the length is 42cm and the width is 5.2cm), a second conductive electrode 6 is led out from the double-sided conductive single-sided tape 5, the contact area is 1cm x 1cm, the wiring width is 1cm, and the wiring length is 4.5cm, so that the non-invasive sensor of the flexible film is obtained.
The background noise unit is also a non-invasive sensor. The background noise unit is made of a piezoelectric electret material, the specific preparation process of the background noise unit is the same as that of the signal input unit in structure, and the difference is that the background noise unit is formed by placing a group of polarized polymer films on a double-sided conductive single-sided adhesive tape which is folded in half, the double-sided conductive single-sided adhesive tape is installed on a U-shaped support 18, a vibrator 17 is arranged in the center of the double-sided conductive single-sided adhesive tape and used for obtaining a noise signal generated in the running process of a vehicle, and the background noise signal can be obtained through the conversion of a vibration signal and an electric signal of the vibrator.
The signal acquisition and front-end processing unit converts the electric signals into medical characteristics through a computer algorithm, and establishes the relationship between the medical characteristics and human fatigue signs through a large amount of experimental data. Preferably, the signal acquisition and front-end processing unit can adopt a part of the sleep detector 2.0 split type sensor, which contains corresponding functions.
The wireless signal transmitting unit is driven by a low-power consumption wireless chip, and preferably, the wireless signal transmitting unit can adopt a part of the sleep detector 2.0 host machine with corresponding functions.
The signal input unit and the background noise unit are placed in the mode shown in fig. 4, and the signal acquisition and front-end processing unit is connected with an external cloud database or a vehicle-mounted database, so that the normal work can be realized.
The working principle of the invention is as follows:
when the non-invasive sensor is in contact with a human body, signals received by the non-invasive sensor contain signals of required medical representation and stray signals such as vehicle driving and bumping signals, when the vibrator is used (without medical representation signals), the sensor can only receive the stray signals such as vehicle driving and bumping signals, the sensor can be used for collecting the stray signals, and then signals generated in the driving process of the vehicle can be eliminated, so that more accurate human body fatigue sign information can be acquired. In the driving process of a driver, a signal input unit acquires medical characterization signals of a human body at a chair back and a chair cushion, a background noise unit acquires background noise signals, the signals are calculated and converted into medical characterization signals through a signal acquisition and front-end processing unit and then converted into human fatigue signs, the acquired results are sent to a cloud database or a vehicle-mounted database through a wireless signal transmitting unit, and the cloud database or the vehicle-mounted database performs feedback and intervention in combination with the converted human fatigue signs to reduce the accident rate of fatigue driving.
Example 2
The signal input unit in this embodiment includes four polarized polymer films, two conductive double-sided tapes, and three conductive electrodes. The specific preparation process comprises the following steps:
(1) selecting a polymer film material, cutting the polymer film material into four films with the same area of 20cm x 4cm, and uniformly polarizing the films by charging a-1600 kV grid mesh to prepare the four polarized polymer films.
(2) Attaching a first conductive double-sided adhesive (19cm by 3.5cm) to one side of the first polarized polymer thin film, leading out a first conductive electrode from the first conductive double-sided adhesive, wherein the contact area is 1cm by 1cm, the wiring width is 1cm, and the wiring length is 4.5cm, and protecting the first conductive electrode by adopting an insulating material.
(3) The charged side of the second polarized polymer film is bonded to the other side of the first conductive double sided tape.
(4) And attaching a second conductive double-sided adhesive tape to the charged side of the third polarized polymer film, leading out a second conductive electrode from the second conductive adhesive, wherein the contact area is 1cm x 1cm, the wiring width is 1cm, and the wiring length is 4.5cm, and adopting an insulating material for protection.
(5) And (3) bonding the charged side of the fourth polarized polymer film with the other side of the second conductive double-sided adhesive tape, connecting the electrode combined in the step (3) into the second conductive double-sided adhesive tape to form a strip, and bonding the charged side of the fourth polarized polymer film with the other side of the second conductive double-sided adhesive tape.
(6) And (3) placing the polarized polymer film with the double-layer structure in a folded double-sided conductive single-sided adhesive tape (the length is 82cm and the width is 5.2cm), and leading out a third conductive electrode from the double-sided conductive single-sided adhesive tape, wherein the contact area is 1cm x 1cm, the wiring width is 1cm, and the wiring length is 4.5cm, so that the non-invasive sensor of the flexible film is obtained.
The background noise unit is made of a piezoelectric electret material, the specific preparation process of the background noise unit is the same as that of the signal input unit in structure, and the difference is that the background noise unit is formed by placing a group of polarized polymer films on a double-sided conductive single-sided adhesive tape which is folded in half, the double-sided conductive single-sided adhesive tape is installed on a U-shaped support 18, and a vibrator 17 is arranged in the center of the double-sided conductive single-sided adhesive tape and used for acquiring a noise signal generated in the driving process of a vehicle. Other structures and operation principles of this embodiment are the same as those of embodiment 1.
Example 3
The signal input unit in this embodiment includes six polarized polymer films, three conductive double-sided adhesive, and three conductive electrodes. The specific preparation process comprises the following steps:
(1) selecting a polymer film material, cutting the polymer film material into six films with the same area of 20cm x 4cm, and uniformly polarizing the films by charging a-1600 kV grid mesh to manufacture six polarized polymer films.
(2) Attaching a first conductive double-sided adhesive (19cm by 3.5cm) to one side of the first polarized polymer thin film, leading out a first conductive electrode from the first conductive double-sided adhesive, wherein the contact area is 1cm by 1cm, the wiring width is 1cm, and the wiring length is 4.5cm, and protecting the first conductive electrode by adopting an insulating material.
(3) The charged side of the second polarized polymer film is bonded to the other side of the first conductive double sided tape.
(4) And attaching a second conductive double-sided adhesive (19cm by 3.5cm) to the charged side of the third polarized polymer film, leading out a second conductive electrode from the second conductive double-sided adhesive, wherein the contact area is 1cm by 1cm, the wiring width is 1cm, and the wiring length is 4.5cm, and adopting an insulating material for protection.
(5) And (3) bonding the charged side of the fourth polarized polymer film with the other side of the second conductive double-sided adhesive tape, connecting the electrode combined in the step (3) into the second conductive double-sided adhesive tape to form a strip, and bonding the charged side of the fourth polarized polymer film with the other side of the second conductive double-sided adhesive tape.
(6) And attaching a third conductive double-sided adhesive 2(19cm by 3.5cm) to the charged side of the fifth polarized polymer film, leading out a third conductive electrode from the third conductive double-sided adhesive, wherein the contact area is 1cm by 1cm, the wiring width is 1cm, and the wiring length is 4.5cm, and adopting an insulating material for protection.
(7) And (4) connecting the electrodes combined in the step (5) into a third conductive double-sided adhesive tape, discharging the electrodes side by side, and bonding the charged side of the sixth polarized polymer film with the other side of the third conductive double-sided adhesive tape.
(8) And (3) placing the film with the double-layer structure in a folded double-sided conductive single-sided adhesive tape (the length is 42cm and the width is 15cm), and leading out a fourth conductive electrode from the double-sided conductive single-sided adhesive tape, wherein the contact area is 1cm by 1cm, the wiring width is 1cm, and the wiring length is 4.5 cm. A non-invasive sensor of the flexible film is obtained.
The background noise unit is made of a piezoelectric electret material, the specific preparation process of the background noise unit is the same as that of the signal input unit in structure, and the difference is that the background noise unit is formed by placing a group of polarized polymer films on a double-sided conductive single-sided adhesive tape which is folded in half, the double-sided conductive single-sided adhesive tape is installed on a U-shaped support 18, and a vibrator 17 is arranged in the center of the double-sided conductive single-sided adhesive tape and used for acquiring a noise signal generated in the driving process of a vehicle. Other structures and operation principles of this embodiment are the same as those of embodiment 1.
The signal input unit and the background noise unit are arranged at more flexible positions (such as a chair cushion and a backrest), a plurality of flexible film type sensors can be arranged at different positions to be mutually verified, meanwhile, when the non-invasive sensor is in contact with a human body, signals received by the non-invasive sensor contain signals with required medical characteristics and stray signals such as vehicle running and bumping signals, when an oscillator (without medical characteristic signals) is used, the stray signals such as the vehicle running and bumping signals can be only received, the stray signals can be collected by the sensor, signals generated in the running process of an automobile can be eliminated, and more accurate human body fatigue sign information can be acquired.
The non-invasive sensor adopts flexible electromechanical transduction materials (such as flexible piezoelectric electret films) to meet the requirements of a new generation of non-invasive sensors, has light weight and good flexibility, can be made into any shape and size, has high sensitivity, can still acquire medical characterization information of a human body within a certain distance even if not directly contacted with the human body, and is more suitable for actual application conditions.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and those skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A vital signs monitoring system based on an intelligent seat, the system comprising:
the sensor module of setting on intelligent seat body, this module includes:
the signal input unit is used for acquiring the signals of a seat back and a seat cushion of a driver in the driving process according to a non-invasive sensor arranged at the position of the seat back or the seat cushion of the intelligent seat, the non-invasive sensor of the signal input unit comprises a plurality of groups of polarized polymer films made of flexible electromechanical transduction materials, the polarized polymer films are arranged in a double-sided conductive single-sided adhesive tape after being connected through a conductive double-sided adhesive tape, a conductive electrode is led out from the polarized polymer films, and a conductive electrode is led out from the double-sided conductive single-sided adhesive tape; the signal input unit comprises one group, two groups or three groups of polarized polymer films, and each group comprises two polarized polymer films with the same area;
the non-invasive sensor of the background noise unit comprises a group of polarized polymer films made of piezoelectric electret materials, the polarized polymer films are connected through a conductive double-sided adhesive tape and then arranged in a double-sided conductive single-sided adhesive tape which is folded in half, conductive electrodes are led out from the polarized polymer films, the conductive electrodes are led out from the double-sided conductive single-sided adhesive tape, the double-sided conductive single-sided adhesive tape is arranged on a U-shaped bracket, and a vibrator is arranged at the center of the double-sided conductive single-sided adhesive tape;
the signal acquisition and front-end processing unit is used for collecting and processing the signals acquired by the signal input unit and the background noise unit;
the wireless signal transmitting unit is used for wirelessly transmitting the results of the signal acquisition and the processing of the front-end processing unit;
cloud database: the wireless signal transmitting unit is used for transmitting a wireless signal to the wireless signal transmitting unit;
a vehicle-mounted database: the wireless signal transmitting unit is used for transmitting a wireless signal to the wireless signal transmitting unit;
in the driving process of a driver, a signal input unit acquires medical characterization signals of human bodies at a chair back and a chair cushion, a background noise unit acquires background noise signals, the signals are processed and converted into human fatigue signs through a signal acquisition and front-end processing unit, the acquired results are sent to a cloud database or a vehicle-mounted database through a wireless signal transmitting unit, and feedback and intervention are performed by combining the converted human fatigue signs;
the preparation process of the signal input unit of the non-invasive sensor comprises the following steps:
1) selecting a polymer film material, carrying out uniform polarization treatment on the film through grid charging, and carrying out thermal aging treatment to prepare one group, two groups or three groups of polarized polymer films with the same area;
2) attaching a layer of conductive double-sided adhesive to the charged side of the first polarized polymer film, leading out a first conductive electrode from the conductive double-sided adhesive, and protecting the first conductive electrode by adopting an insulating material;
3) bonding the charged side of the second polarized polymer film with the other side of the conductive double-sided adhesive tape in the step 2);
4) if two groups or three groups of polarized polymer films are adopted, the other group or two groups of polarized polymer films form the polarized polymer films with a double-layer structure according to the steps 2) to 3), the polarized polymer films of all groups are arranged side by side, and the electrodes led out from the previous group are connected into the conductive double-sided adhesive tape used by the next group;
5) and placing the first polarized polymer film and the last polarized polymer film in the double-folded double-sided conductive single-sided adhesive tape, and leading out another conductive electrode from the double-sided conductive single-sided adhesive tape to obtain a signal input unit of the non-invasive sensor of the flexible film.
2. The smart seat based signs monitoring system of claim 1, wherein the background noise unit of the non-invasive sensor is prepared by:
1) selecting a polymer film material, carrying out uniform polarization treatment on the film through grid charging, and carrying out thermal aging treatment to prepare a group of polarized polymer films with the same area;
2) attaching a layer of conductive double-sided adhesive to the charged side of the first polarized polymer film, leading out a first conductive electrode from the conductive double-sided adhesive, and protecting the first conductive electrode by adopting an insulating material;
3) bonding the charged side of the second polarized polymer film with the other side of the conductive double-sided adhesive tape in the step 2);
4) and placing a group of polarized polymer films in the folded double-sided conductive single-sided adhesive tape, leading out another conductive electrode from the double-sided conductive single-sided adhesive tape, installing the double-sided conductive single-sided adhesive tape on the U-shaped bracket, and arranging a vibrator at the center position of the double-sided conductive single-sided adhesive tape to obtain a background noise unit of the non-invasive sensor of the flexible film.
3. A smart seat-based signs monitoring system according to claim 1 or 2, wherein the polarized polymer film has an area of 20cm x 4 cm.
4. A smart seat based signs monitoring system according to claim 1 or 2 wherein the conductive electrode has a contact area of 1cm x 1cm, a wire width of 1cm and a wire length of 4.5 cm.
5. A smart chair based signs monitoring system as claimed in claim 1 or 2, wherein the double-sided conductive single-sided tape is 42cm long and 5.2cm wide when a set of polarized polymer films is used, 82cm long and 5.2cm wide when two sets of polarized polymer films are used, and 42cm long and 15cm wide when three sets of polarized polymer films are used.
6. The smart seat-based signs monitoring system of claim 1, wherein the background noise unit is disposed on a back side of a chair back, a back side of a headrest, or directly under the smart seat.
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| CN201910555478.3A CN110327052B (en) | 2019-06-25 | 2019-06-25 | Sign monitoring system based on intelligent seat |
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| CN110327052B true CN110327052B (en) | 2022-04-05 |
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