CN109394185A - Blood vessel sensing device with calibration function - Google Patents
Blood vessel sensing device with calibration function Download PDFInfo
- Publication number
- CN109394185A CN109394185A CN201811402306.4A CN201811402306A CN109394185A CN 109394185 A CN109394185 A CN 109394185A CN 201811402306 A CN201811402306 A CN 201811402306A CN 109394185 A CN109394185 A CN 109394185A
- Authority
- CN
- China
- Prior art keywords
- signal
- blood vessel
- analog
- processing circuit
- skin characteristic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The blood vessel sensing device with calibration function that the invention discloses a kind of includes an analog processing circuit, a signal generating circuit and a DC voltage circuit for detecting.The analog processing circuit has an optical sensing module.One of optical sensing module photosensory assembly generates the analog signal comprising a skin characteristic signal and a blood vessel feature signal according to a reflection light signal.The skin characteristic signal and the blood vessel feature signal respectively correspond the skin characteristic and blood vessel feature of user.The signal generating circuit is electrically connected to the analog processing circuit, the analog signal is converted to a compensating signature.The DC voltage circuit for detecting is electrically connected to the signal generating circuit.The DC voltage circuit for detecting compensates the analog processing circuit according to the compensating signature, to reduce the skin characteristic signal in the analog signal.
Description
The application is 201510400468.4 divisional application, the July 9 2015 applying date of parent application, application number
201510400468.4 being the blood vessel sensing device with calibration function with invention and created name.
Technical field
The present invention relates to blood vessel detection technology fields, more particularly to the blood vessel sensing device with calibration function.
Background technique
With the development of science and technology movement, body-building and health-related products lead the development trend of wearable device.It is wearable
Device has light and handy convenient characteristic, carries convenient for user to operate its application program at any time.Due to wearable device
It is to be attached to human body surface tissue, such as wrist, biometric sensor can also be arranged in wearable device, to supervise at any time
Survey the physiology and/or psychologic status of user.For example, biometric sensor can be blood vessel sensor, wearable dress
The parameters such as the rhythm of the heart data using blood vessel sensor detecting user, breath rhythm are set, and are displayed on the screen for reference.So
And vascular tissue is buried under skin surface, different users have different skin colors, skin roughness or sebum
The accuracy of thickness degree, traditional blood vessel sensor is bad, it is difficult to effectively differentiate the difference of these skin surface features and correct mistake
Filter out required blood vessel characteristic parameter.
Summary of the invention
The main purpose of the present invention is to provide one kind, it is intended to solve the bad technology of the accuracy of traditional blood vessel sensor
Problem.
To achieve the above object, the present invention provides a kind of blood vessel sensing device with calibration function, described to have correction
The blood vessel sensing device of function includes:
One analog processing circuit has an optical sensing module, and one of optical sensing module photosensory assembly is according to a reflected light
Signal generates the analog signal comprising a skin characteristic signal and a blood vessel feature signal, and wherein the skin characteristic signal is corresponding
The skin characteristic of one user, the blood vessel feature signal correspond to the blood vessel feature of the user；
One signal generating circuit is electrically connected to the analog processing circuit, the analog signal is converted to compensation news
Number；And
One DC voltage circuit for detecting, is electrically connected to the signal generating circuit, and the DC voltage circuit for detecting is according to the benefit
It repays signal and compensates the analog processing circuit, to reduce the skin characteristic signal in the analog signal；
The optical sensing module also has a switch and a charging capacitor, which is electrically connected to the charging capacitor, the sense
Between optical assembly and the signal generating circuit, which changes the gate voltage of the switch to control the charging
The level of charge of capacitor compensates the analog processing circuit whereby.
Preferably, which is to open the switch to charge to the charging capacitor, deducts a direct current whereby
Voltage value reduces the skin characteristic signal in the analog signal.
Preferably, which is a N-type MOS transistor, a p-type MOS transistor or a transmission gate.
Blood vessel sensing device of the invention can deduct tissue surface because of skin when detecting different colour of skin surface textures automatically
Redundancy interference voltage value caused by skin feature signal improves blood vessel feature signal in the analog signal of analog processing circuit output end
In ratio.The present invention uses DC voltage circuit for detecting dynamic calibration analog processing circuit, and analog processing circuit deducts in advance
Skin characteristic signal can just export analog signal, therefore the data volume of analog signal can substantially reduce, and reduce in blood vessel sensing device
The operation of other electronic building bricks/conversion metrics demand makes blood vessel sensing device have both low-power consumption, small area and high sensing precision
Advantage.
Detailed description of the invention
Fig. 1 is the schematic diagram of the blood vessel sensing device of first embodiment of the invention；
Fig. 2 is the schematic diagram of the blood vessel sensing device of second embodiment of the invention；
Fig. 3 is the schematic diagram of the blood vessel sensing device of third embodiment of the invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Referring to Fig. 1, Fig. 1 is the schematic diagram of the blood vessel sensing device 10 of first embodiment of the invention.Blood vessel sensing device
10 include analog processing circuit 12, signal generating circuit 14 and DC voltage circuit for detecting 16.Blood vessel sensing device 10 is usual
It applies in smartphone, smart watch or other wearable platforms, is using analog processing circuit 12 with non-intrusion type
Light sensation technology goes sensing user's (human body to be measured) surface texture and generates corresponding analog signal, and analog signal can wrap simultaneously
The blood vessel feature signal of skin characteristic signal and tissue bottom containing tissue surface.Wherein, skin characteristic signal corresponds to user
Skin characteristic, such as the colour of skin or roughness；Blood vessel feature signal then corresponds to the blood vessel feature of user, such as vessel retraction variation
Amount.For blood vessel sensing device 10, the skin characteristic signal in analog signal is redundancy noise.
According to race and/or the difference of living habit, different users have different skin characteristic signals, such as deep skin
The skin characteristic signal of color user proportion in analog signal is larger, and the skin characteristic signal of shallow colour of skin user is interrogated in simulation
Proportion is smaller in number.If the analog signal inner skin feature signal ratio that analog processing circuit 12 obtains is excessive, blood vessel sense
Survey device 10 will be difficult to discrimination blood vessel feature signal therein, can not provide correct rhythm of the heart data and corresponding mood and/or
Pressure index is referred to for user.Therefore, blood vessel sensing device 10 is to utilize signal generating circuit 14 by analog processing circuit 12
Analog signal be converted to compensating signature.When sensing the surface texture of the different colours of skin, DC voltage circuit for detecting 16 can be according to
It goes dynamic to compensate analog processing circuit 12 according to compensating signature, the skin characteristic signal in analog signal is deducted, to lower skin-color
Interference of the color or roughness to blood vessel sensing result.
In the first embodiment, analog processing circuit 12 has optical sensing module 18 and gain module 20.Optical sensing module
18 usable non-intrusion type light sensation technologies, such as light volume (photoplethysmogram) technology etc., by penetrating to the skin
Beneath light signal removes sensing because light caused by vessel retraction changes, and generates corresponding analog signal.For example, light sensation
Surveying module 18 includes photosensory assembly 24, and the wave-length coverage of a light signal corresponds to the sensing range of photosensory assembly 24.Light signal
Usually black light signal to avoid environmental background noise jamming.The light signal is launched into the surface texture of user, and
Photosensory assembly 24 can generate photosensitive signal in the reflection light signal that user's surface texture is formed according to light signal.Wherein photosensitive news
Number correspondence parameter containing user's skin characteristic signal and blood vessel feature signal.
Gain module 20 is electrically connected between optical sensing module 18 and signal generating circuit 14, for amplifying optical sensing module
18 photosensitive signal, and corresponding analog signal is generated by the output end of analog processing circuit 12；Signal generating circuit 14 is electrically connected
It is connected between analog processing circuit 12 and DC voltage circuit for detecting 16, for converting the analog signal of analog processing circuit 12
It is used at compensating signature for DC voltage circuit for detecting 16.Signal generating circuit 14 can be analog-digital converter, can will simulate
Signal is converted into the compensating signature of digital kenel.In order to lower interference of the skin characteristic signal to blood vessel sensing result, first is real
Applying example is that a first switch 26 is arranged in optical sensing module 18, be connected electrically in photosensory assembly 24 and signal generating circuit 14 it
Between.Blood vessel sensing device 10 dynamically compensates the gate voltage of first switch 26 using DC voltage circuit for detecting 16, by change
Its gate voltage controls the photosensitive signal amount by first switch 26.For example, DC voltage circuit for detecting 16 can be used to reduce
The gate voltage of first switch 26 reduces the flow that photosensitive signal passes through first switch 26, deducts (or reducing ratio) with corresponding
It is under the jurisdiction of the DC voltage value of skin characteristic signal, it is complete to retain blood needed for the analog signal that analog processing circuit 12 exports
Pipe feature signal.
Referring to Fig. 2, Fig. 2 is the schematic diagram of the blood vessel sensing device 10 ' of second embodiment of the invention.Second embodiment
In, with first embodiment have the function of the component structure having the same of identical number and, be not repeated to illustrate in this.Blood vessel sense
The optical sensing module 18 ' for surveying device 10 ' also has second switch 28 and charging capacitor 30, and second switch 28 is connected electrically in charging
Between capacitor 30, photosensory assembly 24 and signal generating circuit 14.DC voltage circuit for detecting 16 is the lock for changing second switch 28
Pole tension is to control the level of charge of charging capacitor 30, to achieve the purpose that dynamic compensates analog processing circuit 12.Specifically,
DC voltage circuit for detecting 16 can open second switch 28 and charge to charging capacitor 30, and the photosensitive signal of part is passing through
Charging capacitor 30 can be flowed to via second switch 28 when node A, imply that the direct current for corresponding to skin characteristic signal in photosensitive signal
Voltage value can be deducted (or reducing ratio).The opening degree of second switch 28 is bigger, and the photosensitive deducted numerical value of signal is bigger,
The analog signal of 12 output end of analog processing circuit can completely retain (or retaining in a large proportion) important blood vessel feature news
Number.
Referring to Fig. 3, Fig. 3 is the schematic diagram of the blood vessel sensing device 10 " of third embodiment of the invention.3rd embodiment
In, with previous embodiment have the function of the component structure having the same of identical number and, be not repeated to illustrate in this.Gain mould
Block 20 ' can synchronize the blood vessel feature signal and skin characteristic signal in amplification analog signal.In order to reduce redundancy from analog signal
Skin characteristic signal, 3rd embodiment is that compensating electric capacity 32 is arranged in the gain module 20 ', and blood vessel sensing device 10 " utilizes
DC voltage circuit for detecting 16 changes the offset voltage value of compensating electric capacity 32, controls gain module 20 ' whereby to analog signal
Amount of gain.In the beneficiating process of analog signal, although the gain of skin characteristic signal and blood vessel feature signal is suitable, penetrate
The deductible skin characteristic signal value of compensating electric capacity, therefore blood vessel sensing device 10 " can reach by the amount of gain for changing analog signal
Reduce the purpose that skin characteristic signal forms interference to blood vessel sensing result.
For synthesis, blood vessel sensing device of the invention, being capable of deduction group automatically when detecting different colour of skin surface textures
Surface layer is knitted because of redundancy interference voltage value caused by skin characteristic signal, improves blood vessel feature signal in analog processing circuit output end
Analog signal in ratio.The DC voltage circuit for detecting operation of first embodiment is electrically connected to the first of photosensory assembly and opens
It closes, limits the signal circulation of first switch to deduct the direct current of corresponding skin characteristic signal from the photosensitive signal of photosensory assembly
Pressure value；The DC voltage circuit for detecting of second embodiment separately operates the second switch for being electrically connected to charging capacitor, by adjustment the
Two switch on the charge volume that degree determines charging capacitor, deduct specific DC voltage value with corresponding.Wherein first and second
The switch of embodiment can be N-type MOS transistor, p-type MOS transistor or transmission gate.The DC voltage of 3rd embodiment
Circuit for detecting is then to reach deduction by the amount of gain of control gain module or reduce the mesh of analog signal inner skin feature signal
's.Therefore, the present invention uses DC voltage circuit for detecting dynamic calibration analog processing circuit, and analog processing circuit deducts skin in advance
Skin feature signal can just export analog signal, therefore the data volume of analog signal can substantially reduce, and reduce its in blood vessel sensing device
The operation of its electronic building brick/conversion metrics demand makes blood vessel sensing device have both the excellent of low-power consumption, small area and high sensing precision
Point.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (3)
1. a kind of blood vessel sensing device with calibration function, which is characterized in that the blood vessel with calibration function senses dress
It sets, includes:
One analog processing circuit has an optical sensing module, and one of optical sensing module photosensory assembly is according to a reflection light signal
The analog signal comprising a skin characteristic signal and a blood vessel feature signal is generated, wherein the skin characteristic signal corresponding one is used
The skin characteristic at family, the blood vessel feature signal correspond to the blood vessel feature of the user；
One signal generating circuit is electrically connected to the analog processing circuit, the analog signal is converted to a compensating signature；With
And
One DC voltage circuit for detecting, is electrically connected to the signal generating circuit, which interrogates according to the compensation
Number the analog processing circuit is compensated, to reduce the skin characteristic signal in the analog signal；
The optical sensing module also has a switch and a charging capacitor, which is electrically connected to the charging capacitor, this photosensitive group
Between part and the signal generating circuit, which changes the gate voltage of the switch to control the charging capacitor
Level of charge, compensate the analog processing circuit whereby.
2. blood vessel sensing device as described in claim 1, which is characterized in that the DC voltage circuit for detecting is to open the switch
It charges to the charging capacitor, deducts a DC voltage value whereby to reduce the skin characteristic signal in the analog signal.
3. blood vessel sensing device as described in claim 1, which is characterized in that the switch is a N-type MOS transistor, a P
Type MOS transistor or a transmission gate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014106317369 | 2014-11-11 | ||
| CN201410631736 | 2014-11-11 | ||
| CN201510400468.4A CN105581788B (en) | 2014-11-11 | 2015-07-09 | Blood vessel sensing device with calibration function |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510400468.4A Division CN105581788B (en) | 2014-11-11 | 2015-07-09 | Blood vessel sensing device with calibration function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109394185A true CN109394185A (en) | 2019-03-01 |
| CN109394185B CN109394185B (en) | 2021-04-27 |
Family
ID=55921972
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510400468.4A Active CN105581788B (en) | 2014-11-11 | 2015-07-09 | Blood vessel sensing device with calibration function |
| CN201811402306.4A Active CN109394185B (en) | 2014-11-11 | 2015-07-09 | Blood vessel sensing device with correction function |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510400468.4A Active CN105581788B (en) | 2014-11-11 | 2015-07-09 | Blood vessel sensing device with calibration function |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN105581788B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4198988A (en) * | 1978-07-26 | 1980-04-22 | Nasa | Pulse transducer with artifact signal attenuator |
| WO2004052190A1 (en) * | 2002-12-10 | 2004-06-24 | Koninklijke Philips Electronics N.V. | A wearable device for bioelectrical interaction with motion artifact correction means |
| CN1600271A (en) * | 2003-09-24 | 2005-03-30 | 株式会社日立制作所 | Optical measurement apparatus and blood sugar level measuring apparatus using the same |
| CN1627916A (en) * | 2002-02-05 | 2005-06-15 | 坦西斯医药股份有限公司 | Method and apparatus for non-invasively measuring hemodynamic parameters using parametrics |
| CN102099671A (en) * | 2008-05-20 | 2011-06-15 | 大学健康网络 | Device and method for fluorescence-based imaging and monitoring |
| CN102131457A (en) * | 2008-08-29 | 2011-07-20 | 吉兰诺瓦公司 | Non-invasive method for estimating of the variation of the glucose level in the blood of a person and apparatus for carrying out the method |
| WO2012096582A1 (en) * | 2011-01-12 | 2012-07-19 | Mecsense As | Sensor device for sensing body fluid density and/or membrane resistance |
| CN102858242A (en) * | 2010-04-27 | 2013-01-02 | 艾迪完整应用有限公司 | Device for non-invasively measuring glucose |
| CN104000563A (en) * | 2011-01-24 | 2014-08-27 | 株式会社Act医疗服务 | Vessel pulse wave measurement system |
| US20140296657A1 (en) * | 2013-04-02 | 2014-10-02 | Mediguide Ltd. | Enhanced compensation of motion in a moving organ using processed reference sensor data |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6616613B1 (en) * | 2000-04-27 | 2003-09-09 | Vitalsines International, Inc. | Physiological signal monitoring system |
| US7024248B2 (en) * | 2000-10-16 | 2006-04-04 | Remon Medical Technologies Ltd | Systems and methods for communicating with implantable devices |
| US9668695B2 (en) * | 2004-08-11 | 2017-06-06 | University Of Florida Research Foundation, Inc. | Pulse oximeter probes and methods for using the same |
| CN101129260A (en) * | 2005-04-19 | 2008-02-27 | 许建平 | Device for measuring vascellum and method for implementing the same |
-
2015
- 2015-07-09 CN CN201510400468.4A patent/CN105581788B/en active Active
- 2015-07-09 CN CN201811402306.4A patent/CN109394185B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4198988A (en) * | 1978-07-26 | 1980-04-22 | Nasa | Pulse transducer with artifact signal attenuator |
| CN1627916A (en) * | 2002-02-05 | 2005-06-15 | 坦西斯医药股份有限公司 | Method and apparatus for non-invasively measuring hemodynamic parameters using parametrics |
| WO2004052190A1 (en) * | 2002-12-10 | 2004-06-24 | Koninklijke Philips Electronics N.V. | A wearable device for bioelectrical interaction with motion artifact correction means |
| CN1600271A (en) * | 2003-09-24 | 2005-03-30 | 株式会社日立制作所 | Optical measurement apparatus and blood sugar level measuring apparatus using the same |
| CN102099671A (en) * | 2008-05-20 | 2011-06-15 | 大学健康网络 | Device and method for fluorescence-based imaging and monitoring |
| CN102131457A (en) * | 2008-08-29 | 2011-07-20 | 吉兰诺瓦公司 | Non-invasive method for estimating of the variation of the glucose level in the blood of a person and apparatus for carrying out the method |
| CN102858242A (en) * | 2010-04-27 | 2013-01-02 | 艾迪完整应用有限公司 | Device for non-invasively measuring glucose |
| WO2012096582A1 (en) * | 2011-01-12 | 2012-07-19 | Mecsense As | Sensor device for sensing body fluid density and/or membrane resistance |
| CN104000563A (en) * | 2011-01-24 | 2014-08-27 | 株式会社Act医疗服务 | Vessel pulse wave measurement system |
| US20140296657A1 (en) * | 2013-04-02 | 2014-10-02 | Mediguide Ltd. | Enhanced compensation of motion in a moving organ using processed reference sensor data |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109394185B (en) | 2021-04-27 |
| CN105581788B (en) | 2019-02-12 |
| CN105581788A (en) | 2016-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10624542B2 (en) | Circuits and methods for photoplethysmographic sensors | |
| DE102016123440A1 (en) | Cardiac monitor systems on portable devices | |
| US20180238734A1 (en) | Methods and systems for modulation and demodulation of optical signals | |
| US20210212581A1 (en) | Method and apparatus for providing biometric information by electronic device | |
| CN109924960A (en) | A kind of blood oxygen saturation, the calculation method and wearable device of heart rate value and pressure rating | |
| CN102389299A (en) | Plethysmogram sensor | |
| CN103152476A (en) | Mobile phone capable of detecting skin state and use method thereof | |
| CN108520241A (en) | Fingerprint collecting method, device based on optical finger print technology and user terminal | |
| Widanti et al. | Stress level detection using heart rate, blood pressure, and GSR and stress therapy by utilizing infrared | |
| CN106137176A (en) | Optical sensing device and operation method thereof | |
| TWI541005B (en) | Vessel sensing device with automatic amendment function | |
| CN104188645B (en) | The measurement method of wearable device and the basal heart rate based on the wearable device | |
| CN105581788B (en) | Blood vessel sensing device with calibration function | |
| EP3657369A3 (en) | Electronic device and method for obtaining information associated with fingerprint | |
| CN104202932A (en) | Portable electronic device and intelligent shell color changing method | |
| US20160029967A1 (en) | Wearable physiological measurement device and signal comparison method thereof | |
| CN105266759A (en) | Physiological signal detection device | |
| DE2720925A1 (en) | Jewellery providing optic and acoustic signals - using light emitting diodes or liq. crystals controlled via microphone to strengthen feeling between wearer and viewer | |
| CN206236165U (en) | A kind of family endowment Intelligent flat computer | |
| CN205031220U (en) | Intelligent skin health detector | |
| CN109976555A (en) | A kind of frequency calibrating method and device | |
| CN106504235A (en) | Rhythm of the heart method based on image procossing | |
| CN205054207U (en) | A wrist formula device for human health monitoring | |
| CN104161499A (en) | Control method used for accurately measuring pulses by means of PVDF pulse sensor | |
| Nawito et al. | A programmable energy efficient readout chip for a multiparameter highly integrated implantable biosensor system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |