CN106568513A - Sensing device capable of detecting static human body - Google Patents
Sensing device capable of detecting static human body Download PDFInfo
- Publication number
- CN106568513A CN106568513A CN201611057591.1A CN201611057591A CN106568513A CN 106568513 A CN106568513 A CN 106568513A CN 201611057591 A CN201611057591 A CN 201611057591A CN 106568513 A CN106568513 A CN 106568513A
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- CN
- China
- Prior art keywords
- human body
- lcd panel
- sensor
- induction installation
- static
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- 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.)
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- 230000003068 static effect Effects 0.000 title claims abstract description 29
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 16
- 230000006698 induction Effects 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 15
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 2
- 239000007844 bleaching agent Substances 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
- G01J5/34—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using capacitors, e.g. pyroelectric capacitors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a sensing device capable of detecting a static human body. The traditional infrared human body sensor can only detect a moving human body and can not judge the static human body. The device disclosed by the invention is composed of a liquid crystal panel, a pyroelectric sensor and a single chip microcomputer. Power on and power off of the liquid crystal panel are controlled through the single chip microcomputer, and the liquid crystal panel becomes transparent or opaque. In the case of a human body, the intensity of infrared light reaching the sensor changes, voltage is thus generated, and thus, the static human body can be detected. The sensing device capable of detecting a static human body belongs to the technical field of sensors, security and intelligent homes.
Description
Technical field
The invention belongs to sensor, security protection and Smart Home technical field.
Background technology
Pyroelectric human body infrared line sensor is widely used in the industry such as security protection and smart home.But traditional is red
Outer human body sensor can only detect the human body of motion, and static human body cannot be judged.Some are improved to detect static human body
Sensor, or employing mechanical movement means, or needing actively to send infrared ray and having used the evaluation algorithm of complexity, this
Sample can bring the increase of noise and power consumption.
The content of the invention
It is an object of the invention to provide a kind of induction installation of detectable static human body.
Technical scheme is as follows：
A piece of LCD panel is put between human body and pyroelectric sensor, with the power on/off of Single-chip Controlling LCD panel（Frequency 1Hz is left
It is right）So that LCD panel becomes transparent or opaque, and when LCD panel is transparent, infrared ray can pass through, and infrared ray can not when opaque
Pass through（Or have a greater attenuation）, the infra-red intensity for reaching sensor produces change, so as to produce voltage.
Reach this purpose, following points it is noted that：
1. general pyroelectric sensor has the detection unit of two reversal connections, to produce different temperature in two detection units and become
Change, different voltages can be produced, finally externally can just show voltage difference.Accomplish this point, there are following several methods：
1）One in two detection units, so when the LCD panel flashes, the detection being blocked are blocked using LCD panel
Unit is bound to produce electric charge, and the detection to not being blocked is first, even if not producing electric charge because human body is motionless, sensor entirety
Externally can also show pressure reduction；
2）LCD panel blocks two detection units simultaneously, but sensor side is to human body so that human body reaches the distance of two detection units
Difference, when LCD panel flashes, the amplitude for reaching the human body infrared Strength Changes of sensor is different, so as to produce pressure reduction；
2. the infrared ray that common glass is produced to human body（Wavelength 10um or so）There is stronger barrier effect, need using special
Saturating far infrared glass, can be only achieved effect；
3. LCD panel can be from liquid crystal light valve or PDLC PDLCs.If from liquid crystal light valve, tow sides
Polaroid, also tackle human body produce infrared ray effectively just may be used（Infrared ray can penetrate polaroid and form polarized wave）.If
Using PDLC, then require without this；
4. LCD panel can be placed between human body and Fei Nier lens, also can be placed between Fresnel Lenses and sensor.
Description of the drawings
Fig. 1 is LCD panel in the induction installation of the detectable static human body being related in the present invention with respect to rpyroelectric infrared
The mounting means 1 of sensor：Block in two detection units of sensor.
Fig. 2 is LCD panel in the induction installation of the detectable static human body being related in the present invention with respect to rpyroelectric infrared
The mounting means 2 of sensor：LCD panel blocks two detection units of sensor simultaneously, and side is installed to human body.
Fig. 3 is the working state figure of the induction installation of the detectable static human body being related in the present invention：Liquid under normal circumstances
Chip is transparent, and infrared ray can pass through LCD panel.If sensor is not triggered after a period of time, no movement human is illustrated, then
Into static human body detection pattern, LCD panel starts to flash.If after the several seconds, sensor is not triggered yet, illustrate also not static
Human body.Now sensor switching state is for nobody, can external output state switching signal.Then LCD panel is changed into transparent.Such as
Fruit someone passes through, sensor-triggered, then switch sensor states for someone, external output state switching signal.Sensor-triggered
Several seconds after stopping, then static human body detection pattern is carried out, and so on.
Specific embodiment
Put before pyroelectric sensor and a piece of use monolithic processor controlled LCD panel.The mounting means of LCD panel can refer to accompanying drawing
1st, accompanying drawing 2 and its explanation.At ordinary times LCD panel is transparent, and if the human body for moving is through before sensor, sensor can be triggered.
When needs have detected whether static human body, Micro Controller Unit (MCU) driving LCD panel flashes.Now if human body is before sensor, no matter quiet
Only still move, sensor can be triggered.Specific workflow is referring to accompanying drawing 3 and its description of the drawings.
LCD panel is made using saturating far glass, liquid crystal species can select TN type liquid crystal light valves（It is usually used in shutter
3D glasses and electric welder's helmet）, can also use PDLC PDLCs.Liquid crystal light valve compares power saving due to transparent during no power,
Even if but in the clear state, polaroid also can produce certain decay to infrared ray.Common formal PDLC is logical due to needing
Electricity can compare power consumption maintaining pellucidity.This problem can be solved using trans PDLC.
Claims (10)
1. the induction installation of static human body can detect, it is characterised in that：A piece of LCD panel is put before human body sensor, by timing
To LCD panel power on/off, LCD panel bleach or opaque is made so that no matter human body is in static or motion, human body sensor
Receive it is human body infrared all can change, so as to detect human body.
2. the induction installation of detectable static human body according to claim 1, it is characterised in that：Human body sensor can make
Use pyroelectric infrared sensor.
3. the induction installation of detectable static human body according to claim 1, it is characterised in that：LCD panel can be used
PDLC（Polymer Dispersed Liquid Crystals）PDLC, can also use liquid crystal light valve.
4. the induction installation of the detectable static human body according to claim 1 or 3, it is characterised in that：The glass of LCD panel
Glass for infrared rays should be used, it is ensured that the infrared ray that human body is produced can penetrate glass；If LCD panel uses TN type liquid crystal light valves,
Should ensure that the polaroid on LCD panel two sides to human body infrared effective（Infrared ray can penetrate polaroid and form polarized wave）.
5. the induction installation of the detectable static human body according to claim 1 or 3, it is characterised in that：LCD panel can be blocked
One in two detection units of pyroelectric infrared sensor, so when static human body is detected, the detection unit being blocked is due to liquid
Flashing for chip and produce electric charge, even if another detection unit does not produce electric charge, sensor integrally externally can also produce voltage difference.
6. the induction installation of the detectable static human body according to claim 1 or 3, it is characterised in that：LCD panel can be simultaneously
Block two of pyroelectric infrared sensor detection units, the side that now should try one's best is installed to human body, with when ensureing that human body is static to two
The distance of individual detection unit, such sensor is just more sensitive.
7. the induction installation of the detectable static human body according to claim 1 or 3, it is characterised in that：LCD panel can be placed on
Between pyroelectric infrared sensor and Fresnel Lenses, also can be placed between Fresnel Lenses and human body.
8. the induction installation of detectable static human body according to claim 1, it is characterised in that：LCD panel can use monolithic
Machine adds drive circuit to control, it is also possible to directly produce square wave to drive by hardware circuit.
9. the induction installation of detectable static human body according to claim 1, it is characterised in that：If controlled using MCU
LCD panel, can allow at ordinary times MCU in a dormant state, only when needing to be confirmed whether nobody, just wake up MCU and produce PWM ripples,
So MCU can do low power dissipation design.
10. the induction installation of detectable static human body according to claim 1, it is characterised in that：Detect someone or
After nobody, control signal can be sent by means such as IO output/wire communications/wireless telecommunications, both can with independent control other
Equipment, it is also possible to signal to gateway, by gateway control miscellaneous equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611057591.1A CN106568513A (en) | 2016-11-26 | 2016-11-26 | Sensing device capable of detecting static human body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611057591.1A CN106568513A (en) | 2016-11-26 | 2016-11-26 | Sensing device capable of detecting static human body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106568513A true CN106568513A (en) | 2017-04-19 |
Family
ID=58542918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611057591.1A Pending CN106568513A (en) | 2016-11-26 | 2016-11-26 | Sensing device capable of detecting static human body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106568513A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131959A (en) * | 2017-06-26 | 2017-09-05 | 彭云 | Inductor |
| CN108318138A (en) * | 2017-12-29 | 2018-07-24 | 上海瀚决网络科技有限公司 | Thermal infrared detector |
| CN108513625A (en) * | 2017-07-04 | 2018-09-07 | 深圳通感微电子有限公司 | Infrared detector and infrared acquisition method |
| CN108513611A (en) * | 2017-07-04 | 2018-09-07 | 深圳通感微电子有限公司 | Infrared detector and infrared acquisition method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000186909A (en) * | 1998-12-24 | 2000-07-04 | Sharp Corp | Human body detecting unit |
| JP2002341051A (en) * | 2001-05-16 | 2002-11-27 | Matsushita Electric Ind Co Ltd | Human body detection method |
| TW200523344A (en) * | 2003-12-19 | 2005-07-16 | Optrex Kk | Liquid crystal optical device and method for fabricating the same |
| CN102590884A (en) * | 2012-02-15 | 2012-07-18 | 浙江大学 | Human body positioning and following system and method based on pyroelectric infrared sensors |
| CN202903336U (en) * | 2012-11-21 | 2013-04-24 | 南京天溯自动化控制系统有限公司 | Human body detector based on liquid crystal light valve |
| CN103207455A (en) * | 2012-01-12 | 2013-07-17 | 深圳市亿思达显示科技有限公司 | Three-dimensional display device |
| CN104407449A (en) * | 2014-05-04 | 2015-03-11 | 丹阳博来腾光电科技有限公司 | Design method of anti-dazzle liquid crystal automobile meeting mirror and device thereof |
-
2016
- 2016-11-26 CN CN201611057591.1A patent/CN106568513A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000186909A (en) * | 1998-12-24 | 2000-07-04 | Sharp Corp | Human body detecting unit |
| JP2002341051A (en) * | 2001-05-16 | 2002-11-27 | Matsushita Electric Ind Co Ltd | Human body detection method |
| TW200523344A (en) * | 2003-12-19 | 2005-07-16 | Optrex Kk | Liquid crystal optical device and method for fabricating the same |
| CN103207455A (en) * | 2012-01-12 | 2013-07-17 | 深圳市亿思达显示科技有限公司 | Three-dimensional display device |
| CN102590884A (en) * | 2012-02-15 | 2012-07-18 | 浙江大学 | Human body positioning and following system and method based on pyroelectric infrared sensors |
| CN202903336U (en) * | 2012-11-21 | 2013-04-24 | 南京天溯自动化控制系统有限公司 | Human body detector based on liquid crystal light valve |
| CN104407449A (en) * | 2014-05-04 | 2015-03-11 | 丹阳博来腾光电科技有限公司 | Design method of anti-dazzle liquid crystal automobile meeting mirror and device thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131959A (en) * | 2017-06-26 | 2017-09-05 | 彭云 | Inductor |
| WO2019000645A1 (en) * | 2017-06-26 | 2019-01-03 | 彭云 | Sensor |
| CN107131959B (en) * | 2017-06-26 | 2024-02-27 | 彭云 | Inductor |
| CN108513625A (en) * | 2017-07-04 | 2018-09-07 | 深圳通感微电子有限公司 | Infrared detector and infrared acquisition method |
| CN108513611A (en) * | 2017-07-04 | 2018-09-07 | 深圳通感微电子有限公司 | Infrared detector and infrared acquisition method |
| WO2019006663A1 (en) * | 2017-07-04 | 2019-01-10 | 深圳通感微电子有限公司 | Infrared detector, and infrared detection method |
| CN108318138A (en) * | 2017-12-29 | 2018-07-24 | 上海瀚决网络科技有限公司 | Thermal infrared detector |
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Application publication date: 20170419 |
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