CN207850572U - A kind of floor perception abnormity early warning system based on strain transducer - Google Patents
A kind of floor perception abnormity early warning system based on strain transducer Download PDFInfo
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- CN207850572U CN207850572U CN201820117307.3U CN201820117307U CN207850572U CN 207850572 U CN207850572 U CN 207850572U CN 201820117307 U CN201820117307 U CN 201820117307U CN 207850572 U CN207850572 U CN 207850572U
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- strain
- floor
- measuring bridge
- early warning
- warning system
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Abstract
The utility model provides a kind of floor perception abnormity early warning system based on strain transducer, including digital sampling and processing, transmitter module, power module and each detection floor；It includes top plate, lower plywood and strain-measuring bridge to detect floor；Strain-measuring bridge clamping is mounted between top plate and lower plywood；The output signal end of strain-measuring bridge is connected with the input terminal of transmitter module；The output end of transmitter module is connected with the input terminal of digital sampling and processing；Power module is respectively the strain-measuring bridge power supply of digital sampling and processing, transmitter module and each detection floor.Floor perception abnormity early warning system can perceive the posture of people, and have preferable accuracy of detection, reliability and less data amount.
Description
Technical field
The utility model is related to a kind of floors to perceive abnormity early warning system, especially a kind of floor based on strain transducer
Perceive abnormity early warning system.
Background technology
China aging of population accelerates, common old solitary people and the unexpected accidentally tumble of home for the aged old man but cannot by and
Shi Faxian and the report for losing life.Abandoning and judging by accident easily occur in existing wearable gyroscope attitude detection, existing video
Detection method needs complicated video processing and mass data transfers.It is therefore desirable to design, a kind of data volume is small and safety can
The detection early warning system leaned on.
Invention content
The detection early warning system small and safe and reliable the purpose of this utility model is to provide a kind of data volume.
In order to solve the above-mentioned technical problem, the floor provided by the utility model based on strain transducer perceives abnormity early warning
System, including digital sampling and processing, transmitter module, power module and each detection floor；It includes upper to detect floor
Laminate, lower plywood and strain-measuring bridge；Strain-measuring bridge clamping is mounted between top plate and lower plywood；Strain measurement
The output signal end of electric bridge is connected with the input terminal of transmitter module；The output end and digital sampling and processing of transmitter module
Input terminal be connected；Power module is respectively the strain of digital sampling and processing, transmitter module and each detection floor
Measuring bridge is powered.
Further, transmitter module includes precise amplifying circuit and low-pass filter circuit；The strain on each detection floor
The output signal end of measuring bridge is connected with the input terminal of each precise amplifying circuit respectively；The output of each precise amplifying circuit
End is connected with the input terminal of each low-pass filter circuit respectively；The output end of each low-pass filter circuit respectively at data acquisition
The each acquisition port for managing module is connected.
Further, digital sampling and processing includes multi-channel a/d converter, microprocessor and radio communication mold
Block；The input terminal of multi-channel a/d converter is connected with the output end of transmitter module；The output end of multi-channel a/d converter with
The input terminal of microprocessor is connected；The communication ends of microprocessor are connected with wireless communication module.
Further, recessed groove there are four being set on the upper side of lower plywood, is equipped with a branch in four recessed grooves
Dagger；Strain-measuring bridge is made of four varistors, and four varistors are separately fixed on the top of four support columns；
Top plate, which covers, is fixed on the top of lower plywood, and varistor be clamped in top plate downside and support column top it
Between.
Further, a longitudinal wire casing and the longitudinal wire casing of connection and four recess are additionally provided in the upper side of lower plywood
The lateral wire casing of slot；Longitudinal wire casing extends to the edge of lower plywood；The data line of four varistors is by lateral wire casing and longitudinal direction
Wire casing, which is laid, constitutes strain-measuring bridge.
The beneficial effects of the utility model are：Due to the walking of people, the time-division for standing, lie low, lying on one's side, lying prone ground or seat ground
Pressure of the cloth on each detection floor is different, the posture of old man can be distinguished according to these parameters, to according to default
Threshold value control wireless communication module whether send corresponding pre-warning signal；Wheatstone bridge knot is constituted using four varistors
Structure has preferable accuracy of detection and reliability, and has less data amount.
Description of the drawings
Fig. 1 is the overlooking structure diagram of the utility model；
Fig. 2 is the front side structure schematic diagram of the utility model；
Fig. 3 is that the varistor of the utility model constitutes wheatstone bridge configuration schematic diagram；
Fig. 4 is the integrated circuit structural schematic diagram of the utility model.
Specific implementation mode
As shown in Figure 1, the floor perception abnormity early warning system disclosed by the utility model based on strain transducer includes：Base
In strain transducer floor perceive abnormity early warning system, including digital sampling and processing, transmitter module, power module with
And each detection floor；It includes top plate 1, lower plywood 2 and strain-measuring bridge to detect floor；Strain-measuring bridge clamping peace
Between top plate 1 and lower plywood 2；The output signal end of strain-measuring bridge is connected with the input terminal of transmitter module；Become
The output end for sending device module is connected with the input terminal of digital sampling and processing；Power module is respectively data acquisition process mould
The strain-measuring bridge power supply of block, transmitter module and each detection floor.Power module is mainly by coupling transformer, whole
Stream, filtering and power module of voltage regulation composition, AC220V input signals are by transformer coupled, through over commutation, filtering and voltage stabilizing
Generation ± 5V and ± 12V and 2V bridge pressures afterwards are used for system.Wherein, 2V bridges pressure is used to strain-measuring bridge, ± 5V outputs
It is used to precise amplifying circuit and low-pass filtering module, ± 12V is used to digital sampling and processing.
Further, transmitter module includes precise amplifying circuit and low-pass filter circuit；The strain on each detection floor
The output signal end of measuring bridge is connected with the input terminal of each precise amplifying circuit respectively；The output of each precise amplifying circuit
End is connected with the input terminal of each low-pass filter circuit respectively；The output end of each low-pass filter circuit respectively at data acquisition
The each acquisition port for managing module is connected.Precise amplifying circuit and low-pass filter circuit are all made of common data prediction electricity
Road, the strain signal that strain-measuring bridge generates send precise amplifying circuit to be amplified, then filter out height by low-pass filter
After frequency noise, Multichannel data acquisition device is sent to carry out data acquisition.
Further, digital sampling and processing includes multi-channel a/d converter, microprocessor and radio communication mold
Block；The input terminal of multi-channel a/d converter is connected with the output end of transmitter module；The output end of multi-channel a/d converter with
The input terminal of microprocessor is connected；The communication ends of microprocessor are connected with wireless communication module.C8051 may be used in microprocessor
Microcontroller and its peripheral circuit realize that under control of the microprocessor, multi-channel a/d converter completes transmitter output signal
It acquires and is sent to microprocessor and carry out processing and floor pressure state analysis, the possible behavior posture of people on floor is sentenced
Not, and by result wireless module is sent externally to send.
Further, recessed groove 3 there are four being set on the upper side of lower plywood 2, is equipped with one in four recessed grooves 3
Support column 4；Strain-measuring bridge is made of four varistors 5, and four varistors 5 are separately fixed at four support columns 4
On top；Top plate 1 covers the top for being fixed on lower plywood 2, and varistor 5 is clamped in downside and the support of top plate 1
Between the top of column 4.
Further, a longitudinal wire casing 7 and the longitudinal wire casing 7 of connection and four are additionally provided in the upper side of lower plywood 2
The lateral wire casing 6 of recessed groove 3；Longitudinal wire casing 7 extends to the edge of lower plywood 2；The data line of four varistors 5 is by x wire
Slot 6 and longitudinal wire casing 7 are laid and constitute strain-measuring bridge；Longitudinal wire casing 7 extends to outside detection floor, is used for the output of data line
Connection.
Further, four varistors 5 constitute strain-measuring bridge.As shown in figure 3, R1、R2、R3、R4It is four pressure-sensitive
Resistance, when receiving pressure, the resistance value of resistance can change, UiInput voltage when to work, is provided by power module, and
U0For output voltage, it is assumed that the increased resistance value of four varistors is respectively Δ R1、ΔR2、ΔR3、ΔR4, then output voltage U0
It is equal to：
Under normal circumstances, the initial resistance value of four varistors is equal, i.e. R1=R2=R3=R4, bridge balance, electric at this time
Pressure output is 0, when varistor is under pressure effect, can cause the change of four varistor resistance values, to keep output electric
The corresponding variation of pressure life.The voltage of output will be sent after amplification, filtering, acquisition to microprocessor, and microprocessor is according to adopting
Collect output control wireless communication module and sends corresponding pre-warning signal.
Floor disclosed by the utility model based on strain transducer perceives abnormity early warning system when in use, by each inspection
Survey floor splicing and be laid on old man often movable region, due to old man walk, stand, lie low, lie on one's side, lie prone ground or sit ground when
The pressure for being distributed in each detection floor is different, the posture of old man can be distinguished according to these parameters, to according to pre-
If threshold value control wireless communication module whether send corresponding pre-warning signal.
Claims (5)
1. a kind of floor based on strain transducer perceives abnormity early warning system, it is characterised in that：Including data acquisition process mould
Block, transmitter module, power module and each detection floor；Detection floor includes top plate (1), lower plywood (2) and answers
Become measuring bridge；Strain-measuring bridge clamping is mounted between top plate (1) and lower plywood (2)；The output of strain-measuring bridge
Signal end is connected with the input terminal of transmitter module；The input terminal phase of the output end of transmitter module and digital sampling and processing
Even；Power module is respectively that the strain-measuring bridge of digital sampling and processing, transmitter module and each detection floor supplies
Electricity.
2. the floor according to claim 1 based on strain transducer perceives abnormity early warning system, it is characterised in that：Pick-up
Device module includes precise amplifying circuit and low-pass filter circuit；The output signal end point of the strain-measuring bridge on each detection floor
It is not connected with the input terminal of each precise amplifying circuit；The output end of each precise amplifying circuit is electric with each low-pass filtering respectively
The input terminal on road is connected；The output end of each low-pass filter circuit respectively with each acquisition port phase of digital sampling and processing
Even.
3. the floor according to claim 1 based on strain transducer perceives abnormity early warning system, it is characterised in that：Data
Acquisition processing module includes multi-channel a/d converter, microprocessor and wireless communication module；Multi-channel a/d converter it is defeated
Enter end with the output end of transmitter module to be connected；The output end of multi-channel a/d converter is connected with the input terminal of microprocessor；It is micro-
The communication ends of processor are connected with wireless communication module.
4. the floor according to claim 1 based on strain transducer perceives abnormity early warning system, it is characterised in that：Under
Recessed groove (3) there are four being set on the upper side of laminate (2), is equipped with a support column (4) in four recessed grooves (3)；Strain
Measuring bridge is made of four varistors (5), and four varistors (5) are separately fixed on the top of four support columns (4)；
Top plate (1) covers the top for being fixed on lower plywood (2), and varistor (5) is clamped in downside and the support of top plate (1)
Between the top of column (4).
5. the floor according to claim 4 based on strain transducer perceives abnormity early warning system, it is characterised in that：Under
The upper side of laminate (2) is additionally provided with the transverse direction of a longitudinal wire casing (7) and the longitudinal wire casing of connection (7) and four recessed grooves (3)
Wire casing (6)；Longitudinal wire casing (7) extends to the edge of lower plywood (2)；The data line of four varistors (5) is by lateral wire casing (6)
It is laid with longitudinal wire casing (7) and constitutes strain-measuring bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820117307.3U CN207850572U (en) | 2018-01-24 | 2018-01-24 | A kind of floor perception abnormity early warning system based on strain transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820117307.3U CN207850572U (en) | 2018-01-24 | 2018-01-24 | A kind of floor perception abnormity early warning system based on strain transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207850572U true CN207850572U (en) | 2018-09-11 |
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ID=63416163
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820117307.3U Expired - Fee Related CN207850572U (en) | 2018-01-24 | 2018-01-24 | A kind of floor perception abnormity early warning system based on strain transducer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057477A (en) * | 2019-05-09 | 2019-07-26 | 合肥工业大学 | A kind of Signal Measurement System that the multichannel AC/DC for strain force sensor motivates |
| CN111145469A (en) * | 2019-12-30 | 2020-05-12 | 广州享药户联优选科技有限公司 | Method and device for realizing one-key help calling based on intelligent medicine chest |
-
2018
- 2018-01-24 CN CN201820117307.3U patent/CN207850572U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057477A (en) * | 2019-05-09 | 2019-07-26 | 合肥工业大学 | A kind of Signal Measurement System that the multichannel AC/DC for strain force sensor motivates |
| CN111145469A (en) * | 2019-12-30 | 2020-05-12 | 广州享药户联优选科技有限公司 | Method and device for realizing one-key help calling based on intelligent medicine chest |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180911 Termination date: 20200124 |
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| CF01 | Termination of patent right due to non-payment of annual fee |