CN210027120U - A car intelligence seat for monitoring children's safety - Google Patents
A car intelligence seat for monitoring children's safety Download PDFInfo
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- CN210027120U CN210027120U CN201920252945.0U CN201920252945U CN210027120U CN 210027120 U CN210027120 U CN 210027120U CN 201920252945 U CN201920252945 U CN 201920252945U CN 210027120 U CN210027120 U CN 210027120U
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Abstract
The utility model relates to a car intelligent seat and control method for monitoring children's safety belongs to the car supervisory equipment field. The intelligent automobile seat comprises a seat body, an intelligent seat cushion and a safety belt automatic adjusting and loosening device. This intelligent seat can real-time detection children's information such as rhythm of the heart, breathing and position of sitting to with the real-time feedback of the information that detects to car front end display screen and long-range cell-phone end, can be simultaneously through the effectual enhancement of the automatically regulated take-up unit of safety belt under dangerous condition and protect children's safety, especially be suitable for to the condition that nobody watched children.
Description
Technical Field
The utility model relates to a car intelligence seat for monitoring children's safety belongs to the car supervisory equipment field.
Background
Along with the improvement of living standard of people, more and more families can buy child safety seat in order to guarantee the safety of children's trip, and child safety seat on the existing market is various, and the price also is the difference respectively. According to market research, the child safety seat that exists in the market now has developed towards intelligent direction, but to effectively adjusting children's position of sitting, the safety seat of real-time detection children's physiological information still has very big market breach, still has a lot of children at present and causes the accident because of not taking care of when taking the car, even dies, and the main reason is exactly that children are when taking danger family's discovery untimely, can't guarantee child's safety.
SUMMERY OF THE UTILITY MODEL
The utility model provides a car intelligence seat and control method for monitoring children's safety has solved untimely and inaccuracy of present car safety seat when monitoring children's safe state, simultaneously the utility model discloses a car intelligence seat adopts intelligent cushion and the intelligent mode of backing up and combining together to monitor children's physiological signal simultaneously, has improved the accuracy of monitoring, the utility model discloses a manual regulation safety belt's inconvenience among the prior art has been solved to safety belt automatically regulated elasticity function.
The utility model adopts the following technical scheme:
the utility model discloses an automobile intelligent seat for monitoring child safety, which comprises a seat body, wherein the seat body is provided with a headrest, a head protecting sleeve and a safety belt; an intelligent back cushion and an intelligent cushion are respectively arranged in the chair back part and the cushion part on the chair body; a driving motor device capable of adjusting the tightness of the safety belt is arranged in the seat body; the intelligent back cushion and the intelligent cushion are respectively connected with the circuit control module; the circuit control module is used for receiving data monitored by the intelligent back cushion and the intelligent cushion and feeding back the data to the driving motor device, and the driving motor device adjusts the tightness of the safety belt.
The utility model discloses an automobile intelligent seat for monitoring children safety, the intelligent back cushion and the intelligent cushion respectively comprise a piezoelectric cable sensor and a seat cushion fabric wrapped outside; the piezoelectric cable sensor is coiled; the piezoelectric cable sensor is connected with the lead; the piezoelectric cable sensor is connected with the circuit control module through a lead.
The utility model discloses an automobile intelligent seat for monitoring children's safety, piezoelectric cable sensor include first insulating layer, first electrode layer, second insulating layer; the upper end surface of the first electrode layer is covered with a first insulating layer; the lower end face of the second electrode layer covers the second insulating layer; the first electrode layer and the second electrode layer are respectively connected with a lead; a piezoelectric film layer is arranged between the first electrode layer and the second electrode layer; the first insulating layer and the second insulating layer are made of flexible insulating glue materials.
The utility model discloses an automobile intelligent seat for monitoring children's safety, piezoelectric film layer constitute by first black phosphorus layer, PVDF piezoelectric film layer, second black phosphorus layer; a PVDF piezoelectric film layer is arranged between the first black phosphorus layer and the second black phosphorus layer; the piezoelectric film layer is round; the circular shapes are arranged in a matrix within the piezoelectric cable sensor.
A car intelligence seat for monitoring children's safety, cushion portion in still be equipped with capacitanc pressure sensor, capacitanc pressure sensor distributes at the seat of cushion portion and is located the edge of seat.
The utility model discloses an automobile intelligent seat for monitoring children safety, be equipped with the pressure sensor array between third electrode layer and the fourth electrode layer; the upper end surface of the third electrode layer and the lower end surface of the fourth electrode layer are respectively wrapped by the third insulating layer and the fourth insulating layer;
the third electrode layer and the fourth electrode layer are respectively connected with the circuit control module through leads;
the pressure sensor array consists of a plurality of capacitance pressure sensors; the plurality of capacitive pressure sensors are arranged in a square matrix; each of the capacitive pressure sensors is connected to the third electrode layer and the fourth electrode layer, respectively, via a lead-out electrode.
The third electrode layer and the fourth electrode layer are connected with the circuit control module through lead-out wires.
A control method for monitoring children's safety's car intelligent seat, the step is as follows:
1) when the seat detects that a person sits on the seat, the intelligent back cushion and the intelligent cushion respectively collect signals of human sitting posture and human heart rate respiration; and through filtering processing; performing calculations based on waveform processing and frequency;
2) the intelligent back cushion detects the human heart rate respiration signals, determines whether the back of the human body leans against the seat back, and sends out alarm signals to the terminal if the human heart rate respiration signals are not detected; judging whether the intelligent back cushion detects that the human heart rate respiration signal accords with a normal value, if so, judging that the human sitting posture is in a safe state, and finishing the detection;
3) detecting that the heart rate and respiration signals of the human body do not accord with the normal value by the intelligent back cushion in the step 2); the intelligent cushion detects whether the stress area and the stress size of the cushion edge are increased; if the stress area and the stress magnitude of the edge of the cushion are increased and the heart rate respiration signal is not detected and monitored, the human body is judged to incline forwards in a sitting posture;
4) and when the human body sitting posture is judged to incline forwards, an actuating signal is sent to the driving motor, and the driving motor drives the safety belt to be tightened, so that the human body sitting posture returns to a safe state.
The utility model discloses a control method for monitoring car intelligent seat of children's safety, step 1) in intelligent back of body pad and intelligent cushion through the signal that piezoelectric cable sensor obtained after low pass filters, transmit for microprocessor through AD conversion, obtain original BCG signal; detecting the peak value of the signal by adopting a differential threshold method, and calculating the heart rate value according to the characteristics of the BCG signal; and (3) decomposing and reconstructing signals in a 10-scale mode by using a sym8 wavelet basis function to extract respiratory waves, and calculating to obtain the respiratory rate.
The utility model discloses a control method for monitoring child safety's car intelligent seat, step 2) in the terminal be circuit control module, bluetooth module and display module; the intelligent back cushion and the intelligent cushion transmit signals to the circuit control module for calculation, and a heart rate value and a breathing rate are obtained and transmitted to the display module through the Bluetooth module for display;
and the circuit control module also sends information to the mobile phone end of the user in real time through the wireless module.
The utility model discloses a control method for monitoring children's safety's car intelligent seat, the signal that intelligent back cushion and intelligent cushion obtained through piezoelectric cable sensor adopts second order difference threshold value detection algorithm; according to the algorithm, after an original BCG signal is subjected to low-pass filtering, the position of a J wave is positioned by setting an amplitude threshold value according to the IJK waveform characteristics in the BCG signal; obtaining a heart rate value by calculating the interval of the J waves; and comparing the calculated heart rate and respiration rate with normal values, if the difference between the result and the normal values is larger, judging that the heart rate and the respiration are abnormal, and starting an alarm function.
Advantageous effects
The utility model provides an automobile intelligent seat for monitoring children's safety can real-time detection children's physiological information to realize the automatic elasticity function of safety belt according to the information that detects, adjust children's position of sitting, can feed back the state that detects to the user through wireless module, bluetooth module in real time simultaneously, increased the security in the driving car process, the security that takes the car to children improves greatly;
the utility model provides a car intelligence seat for monitoring children's safety, its piezoelectric cable sensor are the form distribution of coiling form concentric circles on the mat, and such overall arrangement has increased area of contact, save material. The black phosphorus film and the PVDF film are adopted, and the corrugated structure of the black phosphorus film increases the sensitivity of the piezoelectric cable sensor, so that the measurement result is more accurate.
The utility model provides a control method for monitoring children's safety's car intelligent seat, its safety belt automatically regulated take-up unit have solved the problem that the driver can not in time park for children's adjustment safety belt at the in-process of driving. The circuit of the intelligent cushion part is made of flexible materials, so that the cost is saved, and the intelligent cushion is easy to accept by the public. The intelligent chair cushion combined with the intelligent cushion and the intelligent back cushion is adopted, so that the detection result is more accurate and reliable.
Drawings
FIG. 1 is a main body diagram of the intelligent seat of the present invention;
FIG. 2 is a diagram of the intelligent seat cushion of the vehicle of the present invention;
FIG. 3 is a top view of the intelligent cushion of the present invention;
FIG. 4 is a diagram of a piezoelectric film structure in a piezoelectric cable sensor;
FIG. 4a is a schematic diagram of the black phosphorus crystal structure;
FIG. 5 is a schematic view of the piezoelectric cable sensor from the outside to the inside;
FIG. 6 is a schematic diagram of a capacitive pressure sensor array;
FIG. 6a is a schematic view of a layered structure of a capacitive pressure sensor array;
FIG. 6b is a schematic view of a third electrode layer of the capacitive pressure sensor array;
FIG. 6c is a schematic view of a fourth electrode layer of the capacitive pressure sensor array;
FIG. 7 is a diagram of an automatic belt tensioner adjustment;
FIG. 8 is a block diagram of a measurement circuit;
FIG. 9 is a flow chart of a measurement method;
fig. 10 is a heart rate calculation flow chart.
The meaning of the reference numerals in the figures:
1 is a headrest, 2 is a head protection sleeve, 3 is a first safety belt, 5 is a second safety belt, 8 is a third safety belt, 4 is a shoulder belt, 6 is a first buckle, 7 is a second buckle, 9 is a base, 10 is an intelligent seat, 11a is an intelligent cushion, 11b is an intelligent back cushion, 12 is a seat cushion fabric, 13 is a piezoelectric cable sensor, 14 is a first lead, 15 is a second lead, 16 is a circuit control module, 17 is a first insulating layer, 18 is a first electrode layer, 19 is a first black phosphorus layer, 20 is a piezoelectric film layer, 21 is a second black phosphorus layer, 22 is a second electrode layer, 23 is a second insulating layer, 24 is a black phosphorus crystal structure, 25 is a third insulating layer, 26 is a third electrode layer, 27 is a pressure sensor array, 28 is a fourth electrode layer, 29 is a fourth insulating layer, 30 is a third electrode lead-out wire, 31 is a fourth electrode lead-out wire, 32 is a single capacitive lead-out sensor, 32a is a first capacitive pressure sensor electrode, 32b is a second capacitive pressure sensor electrode, 33 is a stepping motor, 34 is a fourth safety belt, and 35 is a rotating shaft.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the following description will clearly and completely describe the technical solution of the embodiments of the present invention by combining the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
As shown in fig. 1 and 2: the utility model provides an intelligent seat, including seat main part, intelligent seat cushion part and safety belt automatically regulated take-up unit part. The seat body comprises a headrest 1, a head protection sleeve 2, a first safety belt 3, a second safety belt 5, a third safety belt 8, a shoulder belt 4, a first buckle 6, a second buckle 7 and a base 9; an intelligent back cushion 11b is arranged below the headrest 1; the intelligent cushion 11a is arranged below the seat; the upper part and the lower part of the shoulder belt 4 are respectively connected with a safety belt I3 and a safety belt II 5; the other end of the safety belt II 5 is connected with the buckle I6, and the safety belt III 8 is connected with the buckle II 7; the first buckle 6 is connected with the second buckle 7; the other end of the first safety belt 3 passes through the inside of the backrest and is connected with a rotating shaft 35, and a motor 33 inside the backrest is connected with the rotating shaft 35.
The utility model discloses an intelligence cushion and intelligent chair pad breathe synchronous detection to children's rhythm of the heart, and measuring result is more accurate reliable. The intelligent back cushion 11b and the intelligent seat cushion 11a mainly include a seat cushion fabric 12, an internal piezoelectric cable sensor 13, a lead 14 and a lead 15 led out by the piezoelectric sensor, and a circuit control module 16.
The intelligent back cushion 11b and the intelligent cushion 11a both comprise a built-in piezoelectric cable sensor part, a circuit control module part and a capacitive thin film sensor part, wherein two leads are led out from a first electrode layer and a second electrode layer by the piezoelectric cable sensor part to be connected with the nearby circuit control module part, the lower surface of the piezoelectric cable sensor part is connected with the upper surface of the capacitive thin film sensor part through a flexible insulating glue layer, the upper surface and the lower surface of a pressure sensor array of the capacitive thin film sensor part are respectively a third electrode layer and a fourth electrode layer, and measuring electrodes are led out from the third electrode layer and the fourth electrode layer to be connected with a multi-path analog switch of the circuit control module part; and a microprocessor of the circuit control module part is connected with a motor of the automatic tightness adjusting device part of the safety belt, so that the automatic tightness adjusting function of the safety belt is realized.
As shown in fig. 3, 4, and 5: the piezoelectric cable sensor comprises the following components in sequence from outside to inside: the piezoelectric film comprises a first insulating layer 17, a first electrode layer 18 and a piezoelectric film layer 20, wherein the piezoelectric film layer 20 is a PVDF piezoelectric film layer, a second electrode layer 22 and a second insulating layer 23; the piezoelectric film layer sequentially comprises a first Black Phosphorus (BP) layer 19 and a second black phosphorus layer 21 from top to bottom, the first insulating layer 17 and the second insulating layer 23 are made of flexible insulating glue materials respectively, and two leads are led out of the first electrode layer 18 and the second electrode layer 22 respectively and are connected with the circuit control module. As shown in fig. 4a, the crystal structure 24 of the first black phosphorus layer 19 and the second black phosphorus layer 21 has a unique corrugated structure, which can effectively enhance the sensitivity of the piezoelectric cable sensor, the piezoelectric film is distributed in the form of concentric circles in the piezoelectric cable sensor, and the piezoelectric cable sensor is distributed on the mat in the form of a coil in the form of concentric circles.
Further, as shown in fig. 8, the circuit control module includes: the device comprises a power supply module, a sensor module, a signal processing module, a signal acquisition and analysis module, a signal sending module and a motor driving module; the power supply module comprises a reference voltage source, an analog power supply and a digital power supply; the reference voltage source provides power for the sensor module, the analog power source provides power for the signal processing module, and the digital power source provides power for the signal acquisition and analysis module, the motor driving module and the signal sending module; the signal processing module mainly comprises a circuit for amplifying signals output by the piezoelectric cable sensor, a low-pass filtering and power frequency interference processing circuit and a multi-channel analog switch for processing output signals of the capacitive thin film pressure sensor array; the signal acquisition and analysis module comprises an AD converter and an STM32ZGT6 microprocessor which are arranged in the STM32, the AD converter receives the output signal of the piezoelectric cable sensor processed by the signal processing module and converts the output signal into a digital signal to be transmitted to the STM32, the STM32 carries out software filtering, physiological signal waveform extraction and signal frequency calculation on the received signal and transmits the result to an automobile display screen and a remote mobile phone terminal through a Bluetooth module and a wireless module; the signal sending module comprises a wireless module and a Bluetooth module; the motor driving module comprises an ULN2003 drive and a stepping motor, and the ULN2003 drive is connected with the STM32 to control the stepping motor.
Further, as shown in fig. 6, the capacitance film sensor part is a pressure sensor array 27 composed of a plurality of capacitance pressure sensors, and the capacitance pressure sensors are arranged in rows and columns at equal intervals, the utility model adopts an array 27 form of capacitance pressure sensors with 4 × 4 density placed in unit area, and each capacitance pressure sensor is led out a first capacitance pressure sensor electrode 32a and a second capacitance pressure sensor electrode 32 b; each first capacitive pressure sensor electrode 32a is connected with a third electrode lead-out wire 30 in the corresponding third electrode layer 26 above the pressure sensor, and each second capacitive pressure sensor electrode 32b is connected with a fourth electrode lead-out wire 31 in the corresponding fourth electrode layer below the pressure sensor, so that a single pressure sensor signal lead-out is formed, and the pressure distribution condition of a child sitting on the pressure sensor can be known after all signals of all capacitive pressure sensors are output.
As shown in fig. 6a, 6b, and 6c, the upper and lower surfaces of the capacitive pressure sensor array are respectively provided with a third electrode layer 26 and a fourth electrode layer 28, each capacitive pressure sensor is respectively connected to the third electrode layer 26 and the fourth electrode layer 28 through electrodes led out from the third electrode layer 26 and the fourth electrode layer 28, and finally connected to a multi-way analog switch of the circuit control part through electrodes led out from the third electrode layer 26 and the fourth electrode layer 28, the microcontroller controls the analog switch to switch and select each electrode, so as to obtain output values of different capacitive pressure sensors, and the upper surface of the third electrode layer 26 and the lower surface of the fourth electrode layer 28 of the pressure sensor array are respectively provided with a flexible insulating glue layer. The flexible insulating glue layer is formed by a third insulating layer 25 and a fourth insulating layer 29.
The capacitive pressure sensor array can collect stress data in real time and feed back the data to a microprocessor, the size of pressure born by different positions and the sitting posture state of a child can be detected in real time through the change conditions, when the child leans forward and other dangerous sitting postures, the pressure borne by the pressure sensor array distributed at the edge of the intelligent cushion can be obviously increased, and meanwhile, because the body leans forward, the intelligent back cushion cannot contact people, and no signal is output. And under the safe state, the stress of the pressure sensor in the intelligent chair cushion is basically the same.
As shown in fig. 7, the automatic seat belt adjusting and tightening device comprises a stepping motor 33, a rotating shaft 35 and a seat belt four 34, wherein one end of the stepping motor 33 is connected with the microprocessor of the circuit control module 16, the other end of the stepping motor is connected with the rotating shaft 35, the seat belt 34 is wound on the rotating shaft 35, and the seat belt 34 is connected with the seat belt one 3.
The stepping motor 33 is connected with a microprocessor of the circuit control module part, the microprocessor carries out filtering processing, signal extraction and signal frequency calculation on the output signals of the piezoelectric cable sensor, compares the final calculated value with a preset normal value, correspondingly controls the stepping motor 33 according to the final result, if the comparison shows that the child has large physical movement or has forward leaning body or other unsafe sitting postures, the microprocessor drives the motor to work, the motor drives the rotating shaft to rotate clockwise, the safety belt part connected to the rotating shaft is tensioned, the sitting postures of the child are adjusted, the child returns to the safe state again, the tensioning degree of the safety belt is further controlled by monitoring the respiration rate and the heart rate in real time, the danger of the tension of the safety belt is avoided, and meanwhile, information is transmitted to a remote mobile phone end and a display screen at the front end of the automobile through the wireless module and the Bluetooth module, and mastering the state of the child in real time.
The utility model also provides a measuring method of car intelligence seat, characterized by, including following step:
(1) when a person sits on the intelligent seat, the sensor in the intelligent seat cushion starts to collect signals, the signals are amplified through the signal conditioning circuit, filtered through the low-pass filter and then transmitted to the microprocessor through AD conversion, and original BCG signals are obtained;
(2) and designing a direct FIR filter to filter the original signal. Generating a filter coefficient by using an FDAtool tool of Matlab, leading the filter coefficient into STM32, and calling a library function ARM _ fir _ f32 provided by an ARM official to filter the BCG signal;
the specific scheme is as follows: the capacitance type pressure sensor array transmits collected information to a multi-channel analog switch of a circuit control part, the collected information is transmitted to STM32 through a capacitance converter, STM32 controls the analog switch to switch and select each electrode, and then different capacitance values are obtained to judge the change condition of pressure, and then the signals are further processed through software filtering.
(3) And detecting the peak value of the signal by adopting a differential threshold method, and calculating the heart rate value according to the characteristics of the BCG signal.
(4) And (3) decomposing and reconstructing signals by 10 scales by using the sym8 wavelet basis function to extract respiratory waves and calculate the respiratory rate.
(5) Comparing the calculation result with a preset normal value, sending the result to a display screen at the front end of the automobile through a Bluetooth module, and sending the result to a remote mobile phone terminal through a wireless module to realize the real-time performance of detection; meanwhile, the microprocessor controls the motor according to the comparison result, and further realizes the function of automatically adjusting tightness of the safety belt.
Further, as shown in fig. 10, the utility model discloses a second order difference threshold value detection algorithm carries out the calculation of heart rate value, according to the obvious IJK wave form characteristic of BCG signal wave, fixes a position the position of J ripples through setting for the range threshold value, then obtains the heart rate value through the interval of calculating the J ripples.
And further, comparing the calculated heart rate and breathing rate with normal values, if the difference between the result and the normal values is larger, judging that the heart rate and the breathing are abnormal, and starting an alarm function.
Furthermore, the utility model judges whether the child is in the safe state through the output signal of the intelligent cushion, as shown in fig. 9, firstly, judge whether the intelligent cushion has the heart rate and the respiration signal, if the alarm function of the mobile phone and the automobile is not directly started, if the heart rate respiration signal exists, further judge whether the intelligent back cushion has the heart rate and the respiration signal, increase the accuracy and the reliability of the judgment result, if the intelligent back cushion has the heart rate respiration signal output, the back of the child is against the back of the intelligent chair and is in the safe state, then enter the step of judging whether the heart rate and the respiration are normal, if the intelligent back cushion does not have the heart rate respiration signal, the child is not against the intelligent chair back, further judge whether the child is in the safe state, if the lower edge of the intelligent cushion is close to the pressure signal of the edge part of the intelligent chair and the pressure signal of the original child sitting on the intelligent chair are obviously increased, the method comprises the steps of showing that a dangerous state that a body of a child leans forward occurs at the moment, driving a rotating shaft to work by a microprocessor driving motor at the moment, achieving an automatic tensioning function of a safety belt, simultaneously displaying that the safety belt is tensioned automatically by a mobile phone and a display screen of an automobile, detecting whether the heart rate and respiration of the child are normal in real time in the tensioning process of the safety belt so as to avoid the danger caused by the over-tensioning of the safety belt, simultaneously judging whether an intelligent back cushion has a heart rate respiration signal or not in real time, stopping tensioning of the safety belt if the heart rate respiration signal exists, displaying that the automatic adjustment of the safety belt is completed on the mobile phone and the display screen of the automobile, and; if the lower edge pressure signal of the chair cushion is not increased compared with the pressure signal when the child just sits on the intelligent chair, the child is still in a safe sitting posture state, the step of judging whether the heart rate and the breath are normal is carried out, and finally the whole process is finished.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. An intelligent automobile seat for monitoring the safety of children comprises a seat body, wherein a headrest, a head protection sleeve and a safety belt are arranged on the seat body; the method is characterized in that: an intelligent back cushion and an intelligent cushion are respectively arranged in the chair back part and the cushion part on the chair body; a driving motor device capable of adjusting the tightness of the safety belt is arranged in the seat body; the intelligent back cushion and the intelligent cushion are respectively connected with the circuit control module; the circuit control module is used for receiving data monitored by the intelligent back cushion and the intelligent cushion and feeding back the data to the driving motor device, and the driving motor device adjusts the tightness of the safety belt.
2. The car smart seat for monitoring child safety of claim 1, wherein: the intelligent back cushion and the intelligent cushion respectively consist of a piezoelectric cable sensor and a chair cushion fabric wrapped outside; the piezoelectric cable sensor is coiled; the piezoelectric cable sensor is connected with the lead; the piezoelectric cable sensor is connected with the circuit control module through a lead.
3. The car smart seat for monitoring child safety of claim 2, wherein: the piezoelectric cable sensor comprises a first insulating layer, a first electrode layer, a second electrode layer and a second insulating layer; the upper end surface of the first electrode layer is covered with a first insulating layer; the lower end face of the second electrode layer covers the second insulating layer; the first electrode layer and the second electrode layer are respectively connected with a lead; a piezoelectric film layer is arranged between the first electrode layer and the second electrode layer; the first insulating layer and the second insulating layer are made of flexible insulating glue materials.
4. A car smart seat for monitoring child safety according to claim 3, characterized in that: the piezoelectric film layer consists of a first black phosphorus layer, a PVDF piezoelectric film layer and a second black phosphorus layer; a PVDF piezoelectric film layer is arranged between the first black phosphorus layer and the second black phosphorus layer; the piezoelectric film layer is round; the circular shapes are arranged in a matrix within the piezoelectric cable sensor.
5. The car smart seat for monitoring child safety of claim 1, wherein: the cushion part is internally provided with a capacitance type pressure sensor which is distributed on the seat surface of the cushion part and is positioned at the edge of the seat surface.
6. The car smart seat for monitoring child safety of claim 5, wherein: the electrode structure also comprises a third electrode layer and a fourth electrode layer; a pressure sensor array is arranged between the third electrode layer and the fourth electrode layer; the upper end surface of the third electrode layer and the lower end surface of the fourth electrode layer are respectively wrapped by the third insulating layer and the fourth insulating layer;
the third electrode layer and the fourth electrode layer are respectively connected with the circuit control module through leads;
the pressure sensor array consists of a plurality of capacitance pressure sensors; the plurality of capacitive pressure sensors are arranged in a square matrix; leading-out electrodes of each capacitive pressure sensor are connected to the third electrode layer and the fourth electrode layer respectively; the third electrode layer and the fourth electrode layer are connected with the circuit control module through lead-out wires.
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| CN201920252945.0U CN210027120U (en) | 2019-02-28 | 2019-02-28 | A car intelligence seat for monitoring children's safety |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109733257A (en) * | 2019-02-28 | 2019-05-10 | 南京信息工程大学 | It is a kind of for monitoring the automobile intelligent seat and control method of children's safety |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109733257A (en) * | 2019-02-28 | 2019-05-10 | 南京信息工程大学 | It is a kind of for monitoring the automobile intelligent seat and control method of children's safety |
| CN109733257B (en) * | 2019-02-28 | 2023-09-26 | 南京信息工程大学 | Automobile intelligent seat for monitoring child safety and control method |
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