CN108332772A - A kind of remote infrared line physical efficiency recovery control system based on graphene - Google Patents
A kind of remote infrared line physical efficiency recovery control system based on graphene Download PDFInfo
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- CN108332772A CN108332772A CN201810128659.3A CN201810128659A CN108332772A CN 108332772 A CN108332772 A CN 108332772A CN 201810128659 A CN201810128659 A CN 201810128659A CN 108332772 A CN108332772 A CN 108332772A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
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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
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
The present invention overcomes the defect of traditional heart rate sensor especially graphene sensing heart rate system, provides a kind of remote infrared line physical efficiency recovery control system based on graphene.The system includes that range ability is big, the graphene sensing heart rate system of high sensitivity.Sensor-based system has flexibility high, and manufacture craft is simple, and production scale is big, it is at low cost the advantages that.Graphene sensing heart rate system proposed in this paper has outstanding sensitivity and larger working range, can have the good linearity within the scope of compared with low pressure and higher pressure.
Description
Technical field
The invention belongs to heart rate sensor fields, and in particular to a kind of remote infrared line physical efficiency recovery control based on graphene
System processed.
Background technology
Flexible mechanics device received the extensive concern of academia and industrial circle in recent years.Compared to conventional rigid substrate device
Part, flexible mechanics device greatly improve the deformability of device on the basis of not sacrificing performance, to adapt to
Increasingly complex application scenarios are especially suitable for wearable application.Graphene is to be stripped out from graphite, be made of carbon atom
Only one layer of atomic thickness two dimensional crystal.It is it is found that the first by single layer atomic building material.Graphene
Although very thin, but very tough material, meanwhile, it has good elasticity, stretch range that can reach own dimensions again
20%.Grapheme material has had benefited from the characteristics such as its unique electricity, mechanics, has been widely used in since 2004 are found
In flexible mechanics device, graphene mechanics device has very high sensitivity.However, there is system in existing graphene mechanics sensor
Standby complex process, disadvantages and the problem such as repeatability is poor with consistency, yields is low.Traditional pressure sensor cannot be real simultaneously
Existing highly sensitive and big working range, cause its application it is limited.There is an urgent need to develop novel pressure sensors, in spirit
Sensitivity and two aspect of working range make a breakthrough simultaneously.
At present there are many pressure sensor using graphene, 2012, A.D.Smith et al. completely proposed suspension
The structure of graphene pressure sensor, as shown in Figure 1, and in the pressure sensor, due to silica and silicon carbide substrate
Property can not show a candle to the inwardness of graphene, this will produce limitation to the structure of sensor with function.And by film thickness shadow
It rings, it typically is thousands of times of single-layer graphene thickness, transducer sensitivity is also impacted, and low-pressure field is not applicable.
O.K.Kwon et al. proposes modified deflocculated graphite alkene pressure sensor, as shown, this pressure sensor
A top plate with cylindrical supporting leg is increased, transmitting the pressure acted on graphene film by supporting leg will become rapidly
Greatly.This follow-on pressure sensor can be used for low pressure detection environment, and sensitivity is high, and the low pressure range linearity is fine,
But the disadvantage is that the high pressure range linearity is poor, and structure size is more than general deflocculated graphite alkene pressure sensor.
J.Ma et al. has studied a kind of optical fiber graphene pressure sensor, is by vitreous silica capillary to single-mode optics
Fine end applies air pressure postcapillary in inside and is tapered, then melts capillary and form air cavity.Graphene film covers
On cylindrical cavity, external pressure variation can be not only detected, and sealing function can be played to cavity.This pressure passes
Sensor is compact-sized, and mechanical strength is good.But the disadvantage is that operating pressure is relatively low, pressure-sensitivity is not high, gas in sealing cavity
Have minor leakage.
Invention content
In view of the above analysis, the main purpose of the present invention is to provide it is a kind of overcome drawbacks described above based on the remote of graphene
Journey infrared ray physical efficiency recovery control system.The system includes that range ability is big, the graphene sensing heart rate system of high sensitivity.It passes
Sensing system has flexibility high, and manufacture craft is simple, and production scale is big, it is at low cost the advantages that.Graphene heart rate proposed in this paper
Sensor-based system has outstanding sensitivity and larger working range, can have good line within the scope of compared with low pressure and higher pressure
Property degree.
The purpose of the present invention is what is be achieved through the following technical solutions.
A kind of remote infrared line physical efficiency recovery control system based on graphene, includes the graphene heart based on pressure detecting
Rate sensor-based system, remote data acquisition system, infrared ranging system and physical efficiency recovery determine system, wherein described be based on pressure
The graphene sensing heart rate system detectio heart rate information of detection, remote data acquisition system acquire the heart rate in a manner of wirelessly
Information determines system to the physical efficiency recovery, and the range-measurement infrared system is run distance using infrared rays survey.
Further, wherein the graphene sensing heart rate system based on pressure detecting includes multilayered structure, from top to bottom according to
Secondary is substrate layer, layer of pressure sensitive, basal layer.
Further, the first pressure sensitivity electrode layer is additionally provided in the substrate layer and layer of pressure sensitive, described pressure-sensitive
The second pressure sensitivity electrode layer is additionally provided in material layer and basal layer.
Further, the layer of pressure sensitive is made of graphene.
Further, the pressure sensitivity electrode layer is metal conductive oxide layer.
Further, the substrate layer and basal layer are the poroid tissue layer of elasticity.
Further, the specific forming step of the layer of pressure sensitive is：By beaker as in cold water, it is dense that 23ml is added
Sulfuric acid, controlled at 0 DEG C；It is added with stirring the solid mixture of 1g graphite powders and 0.5g sodium nitrate；3g high is added by several times again
Potassium manganate, controlling reaction temperature are no more than 20 DEG C；Potassium permanganate removes water-bath after adding, and is then heated to 35 DEG C or so, continues
30min is stirred, deionized water is slow added into, is heated at high temperature to 90 degree, reacts 15min, warm water is diluted to 140ml, and is added
Appropriate 30% hydrogen peroxide makes solution become glassy yellow, weighs the NaOH solution that said products 0.05g is added to 100mL pH=11
In；Ultrasound 90min prepares dispersion liquid at 150W, removes unstripped graphite oxide at high speed；To graphene oxide point
0.1mL hydrazine hydrates are added in dispersion liquid, 2h is reacted at 90 DEG C, graphene dispersing solution is obtained, the dispersion liquid is deposited to pore mistake
It filters on device, using the method for vacuum suction filter, obtains grapheme material layer, then obtained graphene layer is dried up, obtain required
The graphene layer of thickness.
Technical scheme of the present invention has the following advantages：
Graphene sensing heart rate system proposed in this paper has outstanding sensitivity and larger working range, compared with low pressure
With can have the good linearity within the scope of higher pressure.Show that heart rate sensor of the invention is in pressure limit through actual measurement
20kPa has significant performance when hypersensitivity is 17.2kPa-1 (0Pa-2kPa).
Description of the drawings
Fig. 1 is the structure chart of the graphene sensing heart rate system described in the embodiment of the present invention 1.
Wherein 1 is substrate layer, and 2 be the first pressure sensitivity electrode layer, and 3 be layer of pressure sensitive, and 4 be the second pressure sensitivity electrode layer, and 5 be base
Bottom.
Specific implementation mode
Embodiment one
A kind of remote infrared line physical efficiency recovery control system based on graphene of the present invention, includes based on pressure detecting
Graphene sensing heart rate system, remote data acquisition system, infrared ranging system and physical efficiency recovery determine system, wherein described
Graphene sensing heart rate system detectio heart rate information based on pressure detecting, remote data acquisition system acquire in a manner of wirelessly
The heart rate information determines system to the physical efficiency recovery, and the range-measurement infrared system is run distance using infrared rays survey.
Graphene sensing heart rate system construction drawing as shown in Fig. 1, wherein graphene sensing heart rate system includes multilayer
Structure is from top to bottom substrate layer, layer of pressure sensitive, basal layer successively.
The first pressure sensitivity electrode layer is additionally provided in the substrate layer and layer of pressure sensitive, in the layer of pressure sensitive and base
The second pressure sensitivity electrode layer is additionally provided in bottom.
The layer of pressure sensitive is made of graphene.
The pressure sensitivity electrode layer is made of high-molecular organic material.
The substrate layer and basal layer are the poroid tissue layer of elasticity.
The specific forming step of the layer of pressure sensitive is：By beaker as the 23ml concentrated sulfuric acids in cold water, are added, control is warm
Degree is 0 DEG C；It is added with stirring the solid mixture of 1g graphite powders and 0.5g sodium nitrate；3g potassium permanganate, control is added by several times again
Reaction temperature is no more than 20 DEG C；Potassium permanganate removes water-bath after adding, and is then heated to 35 DEG C or so, continues to stir 30min, then
It is slowly added to deionized water, is heated at high temperature to 90 degree, reacts 15min, warm water is diluted to 140ml, and appropriate 30% dioxygen is added
Water makes solution become glassy yellow, weighs said products 0.05g and is added in the NaOH solution of 100mL pH=11；Surpass at 150W
Sound 90min prepares dispersion liquid, removes unstripped graphite oxide at high speed；It is added into graphene oxide dispersion
0.1mL hydrazine hydrates react 2h at 90 DEG C, obtain graphene dispersing solution, the dispersion liquid is deposited to pore filter device, profit
With the method for vacuum suction filter, grapheme material layer is obtained, then obtained graphene layer is dried up, obtain the graphene of required thickness
Layer material.
The first, second pressure sensitivity electrode layer is vertically arranged to be interdigital, setting in this way, when being acted on by pressure,
The variation of variation and graphene layer resistance between measuring electrode can go out acted on pressure size with composite measurement, and
And if carrying out coordinate calibration to electrode layer in advance, specific pressure position can also be measured, the pressure-sensing can be increased
The scope of application of system.
Embodiment two
Identical as embodiment one, the graphene sensing heart rate system of embodiment two is also multilayered structure.The sensing heart rate system
System is from top to bottom substrate layer, the first layer of pressure sensitive, pressure sensitivity electrode layer, the second layer of pressure sensitive, basal layer successively.
First layer of pressure sensitive and the second layer of pressure sensitive are made of graphene.
The pressure sensitivity electrode layer is high-molecular organic material.
The substrate layer and basal layer are the poroid tissue layer of elasticity.
The specific forming step of the graphene is：By beaker as in cold water, the 23ml concentrated sulfuric acids are added, controlled at
0℃；It is added with stirring the solid mixture of 1g graphite powders and 0.5g sodium nitrate；3g potassium permanganate, control reaction is added by several times again
Temperature is no more than 20 DEG C；Potassium permanganate removes water-bath after adding, and is then heated to 35 DEG C or so, continues to stir 30min, then slowly
Deionized water is added, is heated at high temperature to 90 degree, reaction 15min, warm water is diluted to 140ml, and appropriate 30% hydrogen peroxide is added makes
Solution becomes glassy yellow, weighs said products 0.05g and is added in the NaOH solution of 100mL pH=11；It is ultrasonic at 150W
90min prepares dispersion liquid, removes unstripped graphite oxide at high speed；0.1mL is added into graphene oxide dispersion
Hydrazine hydrate reacts 2h at 90 DEG C, obtains graphene dispersing solution, the dispersion liquid is deposited to pore filter device, using true
The method of suction filter obtains grapheme material layer, then obtained graphene layer is dried up, and obtains the graphene layer material of required thickness
Material.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (8)
1. a kind of remote infrared line physical efficiency recovery control system based on graphene, includes the graphene heart rate based on pressure detecting
Sensor-based system, remote data acquisition system, infrared ranging system and physical efficiency recovery determine system, wherein described examined based on pressure
The graphene sensing heart rate system detectio heart rate information of survey, remote data acquisition system acquire the heart rate letter in a manner of wirelessly
It ceases the physical efficiency recovery and determines system, the range-measurement infrared system is run distance using infrared rays survey.
2. the remote infrared line physical efficiency recovery control system according to claim 1 based on graphene, wherein being based on pressure
The graphene sensing heart rate system of detection includes multilayered structure, is from top to bottom substrate layer, layer of pressure sensitive, basal layer successively.
3. the remote infrared line physical efficiency recovery control system based on graphene as claimed in claim 2, wherein in the substrate
It is additionally provided with the first pressure sensitivity electrode layer in layer and layer of pressure sensitive, second is additionally provided in the layer of pressure sensitive and basal layer
Pressure sensitivity electrode layer.
4. the remote infrared line physical efficiency recovery control system based on graphene as claimed in claim 3, wherein the pressure-sensitive material
The bed of material is made of graphene.
5. the remote infrared line physical efficiency recovery control system based on graphene as claimed in claim 4, wherein the pressure sensitivity is electric
Pole layer is metal conductive oxide layer.
6. the remote infrared line physical efficiency recovery control system based on graphene as claimed in claim 5, wherein the substrate layer
It is the poroid tissue layer of elasticity with basal layer.
7. the remote infrared line physical efficiency recovery control system based on graphene as claimed in claim 6, wherein the pressure-sensitive material
The specific forming step of the bed of material is：By beaker as in cold water, the 23ml concentrated sulfuric acids are added, controlled at 0 DEG C；It is added with stirring
The solid mixture of 1g graphite powders and 0.5g sodium nitrate；3g potassium permanganate is added by several times again, controlling reaction temperature is no more than 20 DEG C；
Potassium permanganate removes water-bath after adding, and is then heated to 35 DEG C or so, continues to stir 30min, is slow added into deionized water, high
Temperature is heated to 90 degree, reacts 15min, and warm water is diluted to 140ml, and appropriate 30% hydrogen peroxide, which is added, makes solution become glassy yellow,
Said products 0.05g is weighed to be added in the NaOH solution of 100mLpH=11；Ultrasound 90min prepares dispersion liquid at 150W,
Unstripped graphite oxide is removed under high rotating speed；0.1mL hydrazine hydrates are added into graphene oxide dispersion, are reacted at 90 DEG C
2h obtains graphene dispersing solution, and the dispersion liquid is deposited to pore filter device, using the method for vacuum suction filter, obtains
Grapheme material layer, then obtained graphene layer is dried up, obtain the graphene layer of required thickness.
8. a kind of remote infrared line physical efficiency recovery control system based on graphene, includes the graphene heart rate based on pressure detecting
Sensor-based system, remote data acquisition system, infrared ranging system and physical efficiency recovery determine system, wherein described examined based on pressure
The graphene sensing heart rate system detectio heart rate information of survey, remote data acquisition system acquire the heart rate letter in a manner of wirelessly
It ceasing the physical efficiency recovery and determines system, the range-measurement infrared system is run distance using infrared rays survey,
The graphene sensing heart rate system based on pressure detecting is multilayered structure, and the sensing heart rate system is from top to bottom successively
Substrate layer, the first layer of pressure sensitive, pressure sensitivity electrode layer, the second layer of pressure sensitive, basal layer, first layer of pressure sensitive and
Second layer of pressure sensitive is made of graphene, and the pressure sensitivity electrode layer is high-molecular organic material, the substrate layer and substrate
Layer is the poroid tissue layer of elasticity, and the specific forming step of the graphene is：By beaker as in cold water, the dense sulphur of 23ml is added
Acid, controlled at 0 DEG C；It is added with stirring the solid mixture of 1g graphite powders and 0.5g sodium nitrate；3g Gao Meng are added by several times again
Sour potassium, controlling reaction temperature are no more than 20 DEG C；Potassium permanganate removes water-bath after adding, and is then heated to 35 DEG C or so, continues to stir
30min is mixed, deionized water is slow added into, is heated at high temperature to 90 degree, 15min is reacted, warm water is diluted to 140ml, and is added suitable
Measuring 30% hydrogen peroxide makes solution become glassy yellow, weighs said products 0.05g and is added in the NaOH solution of 100mLpH=11；
Ultrasound 90min prepares dispersion liquid at 150W, removes unstripped graphite oxide at high speed；To graphene oxide dispersion
Middle addition 0.1mL hydrazine hydrates react 2h at 90 DEG C, obtain graphene dispersing solution, and the dispersion liquid is deposited to pore and filters dress
It sets, using the method for vacuum suction filter, obtains grapheme material layer, then obtained graphene layer is dried up, obtain required thickness
Graphene layer material.
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Application publication date: 20180727 |