CN208156833U - Bathroom tumble sensing device - Google Patents
Bathroom tumble sensing device Download PDFInfo
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- CN208156833U CN208156833U CN201820804922.1U CN201820804922U CN208156833U CN 208156833 U CN208156833 U CN 208156833U CN 201820804922 U CN201820804922 U CN 201820804922U CN 208156833 U CN208156833 U CN 208156833U
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Abstract
A kind of bathroom tumble sensing device includes a thermoelectric pile array sensor and a signal processor.The infrared ray that the one indoor user of bath of thermoelectric pile array sensor sensing is radiated, and export corresponding one first sensing signal.Signal processor and thermoelectric pile array sensor are electrically connected, the first sensing signal exported to receive thermoelectric pile array sensor, to form one thermal imagery of M × N number of pixel, when wherein signal processor is fallen according to thermal imagery identification user, an alarm signal is exported.The resolution ratio that above-mentioned bathroom tumble sensing device is formed by thermal imagery is lower, therefore does not have the doubt of individual privacy, in addition, thermoelectric pile array sensor can differentiate user's movement or fall, therefore can reduce rate of false alarm.
Description
【Technical field】
The utility model is a kind of related sensing device, especially a kind of bathroom tumble sensing device.
【Background technique】
According to statistical data, tumble is to cause the second largest reason of old man's accident injury death, is only second to traffic accident.Fall
Caused actual bodily harm, heavy then fracture or head injury, increases morbidity and the death rate.And the place occurred most frequently of falling
It is exactly parlor, bedroom and bathroom in known family.To increase personnel rescuing rate and saving medical care cost, it is necessary in major accident
It can be detected when generation, or can then be cried for help in Emergency time.
A kind of existing fall detector is with wearable accelerometer.However, for wearing habit, common people
Can back off wearable fall detector when bathroom is had a bath, therefore develop another contactless bathroom fall detection at present
Device.The existing contactless bathroom fall detector of one kind is with IP video camera or near infrared ray video camera sensing user in bathroom
Interior activity, however, IP video camera or near infrared ray video camera have a doubt of individual privacy, and the image of IP video camera also have by
The doubt that hacker captures, therefore above-mentioned contactless bathroom fall detector can not popularity.Another contactless bathroom
Fall detector is the movement that user is sensed with burnt electric-type sensor.However, burnt electric-type sensor is to belong to mobile sensing
Device, that is, then non-output signal in the case that user is mobile, therefore, burnt electric-type sensor such as fails to be sentenced in moment of falling
It is disconnected, then lose warning effect.In addition, burnt electric-type sensor leads to higher wrong report if it can not differentiate user's movement or tumble
Rate, and the trigger delay again of burnt electric-type sensor also influences the reaction time of sensing.
In view of this, provide a kind of contactless bathroom tumble sensing device and can real-time detection and accurate judgement use
Family tumble is the target that current pole need to make great efforts.
【Utility model content】
The utility model provides a kind of bathroom tumble sensing device, is to sense user institute spoke with thermoelectric pile array sensor
The infrared ray penetrated, and form corresponding thermal imagery.Since to be formed by thermal imagery resolution ratio lower for thermoelectric pile array sensor,
Therefore the doubt of individual privacy is not had.In addition, thermoelectric pile array sensor be the infrared ray that is radiated of real-time sensing user into
Row judgement, therefore user's movement can be differentiated or fallen, and then reduce rate of false alarm.
The bathroom tumble sensing device of an embodiment of the present invention includes a thermoelectric pile array sensor and a signal
Processor.The infrared ray that the one indoor user of bath of thermoelectric pile array sensor sensing is radiated, and export corresponding 1 the
One sensing signal.Signal processor and thermoelectric pile array sensor are electrically connected, defeated to receive thermoelectric pile array sensor institute
The first sensing signal out, to form one thermal imagery of M × N number of pixel, wherein signal processor identifies user according to thermal imagery
When tumble, an alarm signal is exported.
The schema elaborate appended by specific embodiment cooperation below, when the mesh for being easier to understand the utility model
, technology contents, feature and its it is reached the effect of.
【Detailed description of the invention】
Fig. 1 is a schematic diagram, shows the bathroom tumble sensing device of an embodiment of the present invention in the indoor configuration of bath.
Fig. 2 is a schematic diagram, shows the bathroom tumble sensing device of an embodiment of the present invention.
Fig. 3 is a flow chart, shows the operation steps of the bathroom tumble sensing device of an embodiment of the present invention.
Fig. 4 to fig. 6 is a schematic diagram, shows that the bathroom tumble sensing device of an embodiment of the present invention is formed by one
Thermal imagery.
Fig. 7 is a schematic diagram, shows the bathroom tumble sensing device of another embodiment of the utility model.
【Symbol description】
1 bathroom
10 bathroom tumble sensing devices
101 thermoelectric pile array sensors
101a thermoelectric pile array sensor chip
101b lens
101c thermistor
102 signal processors
102a signal amplifier
102b microcontroller
102c non-voltile memory
102d communication interface
11 wireless communication modules
12 proximity senses
20 users
20a high temperature pixel
30 shower nozzles
40 gateways
50a, 50b mobile Internet access device
60 servers
70 internets
HI thermal imagery
The top HIa image
The lower part HIb image
S31~S36 step
PSS pixel selection signal
The first sensing signal of SS1
The second sensing signal of SS2
WS alarm signal
【Specific embodiment】
It will be described each embodiment of the utility model below, and cooperate schema as illustration.In addition to multiple detailed description
Except, the utility model also can be widely performed in other embodiments, the substitution easily of any embodiment, modification,
Equivalence changes are included in the scope of the utility model, and are subject to claim.In the description of specification, in order to
So that reader is had more complete understanding to the utility model, provides many specific details；However, the utility model may omit
It is still implementable under the premise of part or all of specific detail.Moreover, it is well known that the step of or component be not described in details
In, unnecessary limitation is formed to avoid to the utility model.Same or similar component will be with same or like symbol in schema
It number indicates.It is specifically intended that schema is only to illustrate to be used, and the not actual size of proxy component or quantity, some details
It may not draw completely, in the hope of the succinct of schema.
Fig. 1 is please referred to, the bathroom tumble sensing device 10 of an embodiment of the utility model is set in a bathroom 1,
User 20 is judged by the thermal imagery that the infrared ray that is radiated of a user 20 in sensing bathroom 1 is formed, and according to thermal imagery
Whether fall.In general, the sensing range of bathroom tumble sensing device 10 can cover the indoor scope of activities of bath it is more big more
It is good.Referring to figure 2., the bathroom tumble sensing device 10 of an embodiment of the utility model includes a thermoelectric pile array sensor
101 and a signal processor 102.Thermoelectric pile array sensor 101 is radiated infrared to the user 20 that senses in bathroom 1
Line, and export corresponding one first sensing signal SS1.
In an embodiment, thermoelectric pile array sensor 101 includes a thermoelectric pile array sensor chip 101a and one saturating
Mirror 101b.Thermoelectric pile array sensor chip 101a can sense the infrared ray that user 20 is radiated, and export corresponding one first
Sensing signal SS1.The resolution ratio of thermoelectric pile array sensor chip 101a is M × N pixel, it is to be understood that a in order to reduce
The doubt of people's privacy, M and N at least one be less than or equal to 128.In an embodiment, M and N at least one
Less than or equal to 64 or 32.For example, the resolution ratio of thermoelectric pile array sensor chip 101a can for 8 × 8,16 × 16,32 ×
32,64 × 64 or 128 × 128 pixel.Or M and N can be to be different, such as the resolution ratio of thermoelectric pile array sensor chip 101a
It can be 16 × 8,32 × 16,64 × 32 or 128 × 32 pixels.Lens 101b is set to the one of thermoelectric pile array sensor chip 101a
The front end of sensing face to define a sensing range of thermoelectric pile array sensor chip 101a, that is, senses visual angle (such as 60 degree),
As indicated by the dashed line in figure 1.In a preferred embodiment, thermoelectric pile array sensor 101 further includes a thermistor 101c.Temperature-sensitive
Resistance 101c senses an environment temperature and exports one second sensing signal SS2.Thermistor 101c can compensate for thermoelectric pile array sense
Chip 101a is surveyed, to obtain accurate sensing result.
Signal processor 102 and thermoelectric pile array sensor 101 are electrically connected.Signal processor 102 receives thermoelectric pile number
The first sensing signal SS1 that group sensor 101 is exported, to form one thermal imagery of M × N number of pixel.In an embodiment, heat
The resolution ratio of image is equal to the resolution ratio of thermoelectric pile array sensor chip 101a, and therefore, the M and N of thermal imagery are equal to M above-mentioned
And N.In an embodiment, in order to reduce hsrdware requirements or increase the speed of data processing, the resolution ratio of thermal imagery is smaller than
The resolution ratio of thermoelectric pile array sensor chip 101a.For example, the resolution ratio of thermoelectric pile array sensor chip 101a be 64 ×
32 pixels, and thermal imagery can be 32 × 16 pixels.
Above description is connected, signal processor 102 judges whether user 20 falls according to thermal imagery, if so, output one
Alarm signal WS.Illustrate after how judging the method appearance whether user 20 falls.In an embodiment, signal processor 102 is wrapped
Containing a signal amplifier 102a, a microcontroller 102b, a non-voltile memory 102c and a communication interface 102d.At signal
102 output pixel selection signal PSS of device to thermoelectric pile array sensor chip 101a is managed, thermoelectric pile array sensor chip 101a then will
First sensing signal SS1 of selected sensor pixel is exported to signal amplifier 102a, and the first sensing signal SS1 is amplified
Input microcontroller 102b.It is understood that the signal of thermoelectric pile array sensor chip 101a output is at a fairly low, and therefore, letter
Number amplifier 102a may be selected low to make up for voltage calculation amplifier, such as ST Micro TSZ121.Microcontroller 102b is built-in
Thermoelectric pile array sensor chip 101a the first sensing signal SS1 exported is converted into digital letter by digital to analog converter
Number.Likewise, the resistance value of thermistor 101c is also converted via microcontroller 102b built-in digital to analog converter, with
Learn environment temperature.Non-voltile memory 102c can be used to store thermoelectric pile array sensor chip 101a and thermistor 101c
Correction parameter, to be used to calculate the body temperature and/or program and alarm settings value etc. of measured user 20.Communication interface
102d is then used to export alarm signal WS to a wireless communication module 11, as shown in Figure 7.For example, communication interface 102d
It can be IC bus (Inter-Integrated Circuit Bus, I2C), universal asynchronous receiver/transmitter (UART)
(Universal Asynchronous Receiver/Transmitter, UART), serial peripheral interface (Serial
Peripheral Interface, SPI) or universal serial bus (Universal Serial Bus, USB), analog voltage formula
Or logic IO output.It is understood that non-voltile memory 102c and communication interface 102d can be integrated into microcontroller
Become one chip, such as microcontroller STM8L151G6U6 in 102b.
Referring to figure 3., to illustrate the operation workflow of the bathroom tumble sensing device of the utility model.Firstly, signal processing
Device 102 scans each pixel (S31) of thermoelectric pile array sensor 101, to form a thermal imagery.In order to promote the reaction of judgement
Time, in an embodiment, signal processor 102 is by thermal imagery binary conversion treatment (S32).For example, signal processor 102
The temperature that each pixel of thermoelectric pile array sensor 101 can be sensed is compared with a reference value, when if more than this reference value
It is indicated with 1, such as Fig. 4, Fig. 5 and hatched example areas shown in fig. 6, being less than this reference value is indicated with 0, so can be by thermal imagery
0 and 1 is reduced to indicate.To simplify the explanation, the pixel of hatched example areas is known as high temperature pixel.
Next, it is determined that whether there is user 20 to enter bathroom (S33).If entering bathroom without user 20, repeatedly step S31
To step S33, persistently to have detected whether that user 20 enters bathroom.In an embodiment, referring to figure 4., signal processor 102
The high temperature pixel 20a for representing user can be picked out from thermal imagery HI, for example, the quantity of the high temperature pixel of cluster be greater than or
When equal to a predetermined value, it can determine that the high temperature pixel of cluster is user, so can determine whether there is user in bathroom.Yu Yishi
It applies in example, signal processor 102 also can be by the thermal imagery HI for comparing front and back different time, and recognizes the pixel for representing user
Whether 20a does not cross the boundary of thermal imagery HI to judge that user enters or leave bathroom.It is understood that the utility model
The factors such as the setting position of bathroom tumble sensing device and bathroom moving-wire (such as doorway position) will affect the picture for representing user
Plain 20a is from the left border, right side boundary or lower boundary of thermal imagery HI into or out of the range of thermal imagery HI.
If step S33 determines there is user 20 in bathroom, judge to bathe whether indoor user 20 falls (S34).If it is not, weight
Multiple step S31 to step S34 bathes whether indoor user 20 falls with lasting detection.Referring to figure 5. and Fig. 6, wherein Fig. 5
Show that user is the state of normal stand, and Fig. 6 then shows that user is the state fallen.In an embodiment, signal processor
102 can divide thermal imagery HI for top image HIa and lower part image HIb, when the pixel for representing user in the image HIa of top
The reduction amount of 20a is greater than or equal to one first setting value (such as reducing 50% or 80%), and pixel 20a does not cross thermal imagery
The boundary of HI, that is, when user does not leave bathroom, signal processor 102 can determine whether that user falls.It is understood that this reality
When being equal to or less than the height of user with the height of the setting position of novel bathroom tumble sensing device, user's normal stand
The upper half and lower half for the occupying thermal imagery HI pixel 20a that state is presented average compared with energy.And when the utility model
When the height of the setting position of bathroom tumble sensing device is greater than the height of user, picture that the state of user's normal stand is presented
Plain 20a will be skewed towards the lower half of thermal imagery HI.Therefore, the size for how dividing the region of top image and lower part image can be by
To the influence of the setting position of the bathroom tumble sensing device of the utility model.In an embodiment, the region of top image HIa
More than or equal to the region of lower part image HIb, but not limited to this.
It is noted that signal processor 102 also can judge in other ways whether user falls.In an embodiment
In, signal processor 102, which can calculate, represents a horizontal width of the pixel 20a of user (as shown in figs.5 and 6 in thermal imagery
X-direction pixel number) an and vertical height (pixel number of Y direction as shown in figs.5 and 6), and by picture
The horizontal width of plain 20a and vertical height judge the posture of user.For example, when the horizontal width of pixel 20a and
When one ratio of vertical height is greater than or equal to one second setting value (being greater than equal to 1.5 or 2), signal processor 102 is
It can determine whether that user falls.It should also be noted that in order to avoid bathing indoor other heat sources (such as hot water of shower nozzle outflow) quilt
It is mistaken for user, the bathroom tumble sensing device 10, user 20 and the indoor other heat sources of bath of the utility model not Ying Tong
It is always on.For example, please refer to Fig. 1, user 20 and the indoor other heat sources (such as shower nozzle 30) of bath it is online with
User 20 and bathroom tumble sensing device 10 it is online between should be in one compared with mitre.
Referring again to Fig. 3, above description is connected, when judging that user falls, signal processor 102 is an exportable warning
Signal WS (S36).It is understood that it also may be that simple user's posture changes that the state of pixel 20a, which changes, therefore, it is
Reduction rate of false alarm, signal processor 102 start a timer after can falling judging user, and judge whether that timing terminates
(S35).If timing not yet terminates, step S31 to step S35 is repeated, whether tumble state is maintained with lasting detection user 20.
If timing terminates to can determine that user falls, signal processor 102 exports alarm signal WS (S36) immediately at this time, and continues to detect
Whether the posture of user changes.
The work of bathroom tumble sensing device 10 comprising a thermoelectric pile array sensor 101 and a signal processor 102
It is larger to make power consumption, and according to operation workflow shown in Fig. 3, bathroom does not have to still need to continue when user whether useful in detection bathroom
Family so causes power consumption to further increase.In order to reduce power consumption, to adapt to work under battery context, Fig. 7 is please referred to,
In an embodiment, the bathroom tumble sensing device of the utility model further includes a proximity sense 12.Proximity sense 12 can
Whether sensing user enters bathroom, and an enabling signal is exported when user enters bathroom, to start thermoelectric pile array sensor
101 start to work.In an embodiment, proximity sense 12 can be the burnt electric-type sensor of a number.Preferably, proximity sense
12 can be the burnt electric-type sensor of a number of low consumption manifold formula.For example, the number of low consumption manifold formula burnt electric-type sensor
Static power consumption stream is between 1-6 micromicroamperes.
Referring again to Fig. 7, in an embodiment, the bathroom tumble sensing device of the utility model further includes a wireless communication
Module 11 is electrically connected with signal processor 102.Signal processor 102 can be believed in the transmission of module 11 warning by wireless communication
Number WS is to alarming devices such as an external electronics, such as buzzer, cresset or mobile Internet access device.In an embodiment, this
The bathroom tumble sensing device of utility model further includes a gateway (gateway) 40, communicates to connect with wireless communication module 11.
Signal processor 102 module 11 and gateway 40 can transmit the shifting of alarm signal WS to local side by wireless communication
Dynamic Internet device 50a or the remote mobile Internet device 50b or the server 60 in cloud that link internet (Internet) 70 etc.
External electronic.For example, the bathroom tumble sensing device of the utility model will bathe the alarm signal of indoor user tumble
When WS is sent to mobile Internet access device 50a or 50b, user outside bathroom or long-range save from damage or healthcare givers can take relatively
The adequate measure answered.In an embodiment, wireless communication module 11 can be wireless local area network module (WLAN), Bluetooth communication mould
Block, purple honeybee communication module (ZigBee) or frequency are 1Ghz twireless radio-frequency communication below (RF) module.
In summary, the bathroom tumble sensing device of the utility model is to sense user institute spoke with thermoelectric pile array sensor
The infrared ray penetrated, and form corresponding thermal imagery.Since to be formed by thermal imagery resolution ratio lower for thermoelectric pile array sensor,
Therefore the doubt of individual privacy is not had.In addition, being different from conventionally employed burnt electric-type sensor, the utility model uses thermoelectric pile
Array sensor can sense the infrared ray that user is radiated in real time and judge, thus can understand differentiate user movement or
It falls, and then reduces rate of false alarm.
Embodiment described above is only the technical idea and feature to illustrate the utility model, and purpose makes to be familiar with this
The personage of skill can understand the content of the utility model and implement accordingly, when cannot with restriction the utility model patent
Range should cover according to equivalent change or modification made by the revealed spirit of the utility model in the utility model generally
The scope of the patents in.
Claims (18)
1. a kind of bathroom tumble sensing device, which is characterized in that include：
One thermoelectric pile array sensor, the infrared ray radiated to sense the indoor user of a bath, and export corresponding
One first sensing signal；And
One signal processor is electrically connected at the thermoelectric pile array sensor, receives first sensing signal, to form M × N number of
One thermal imagery of pixel, and according to the thermal imagery identify the user fall when, export an alarm signal.
2. tumble sensing device in bathroom as described in claim 1, which is characterized in that the thermoelectric pile array sensor includes：
One thermoelectric pile array sensor chip, the infrared ray radiated to sense the user, and export it is corresponding this first
Sensing signal；And
One lens are set to the front end of a sensing face of the thermoelectric pile array sensor chip, to define the thermoelectric pile array sense
Survey a sensing range of chip.
3. tumble sensing device in bathroom as described in claim 1, which is characterized in that the thermoelectric pile array sensor includes a heat
Quick resistance, to sense an environment temperature and export one second sensing signal, wherein the signal processor is according to first sense
It surveys signal and the body temperature of the user is calculated in second sensing signal, and form the thermal imagery.
4. tumble sensing device in bathroom as described in claim 1, which is characterized in that the signal processor includes：
One signal amplifier is electrically connected, to amplify first sensing signal with the thermoelectric pile array sensor；
One non-voltile memory stores a correction parameter of the thermoelectric pile array sensor；
One microcontroller is electrically connected, wherein the microcontroller foundation with the signal amplifier and the non-voltile memory
The body temperature of the user is calculated in first sensing signal and the correction parameter, and forms the thermal imagery；And
One communication interface is electrically connected, to transmit the alarm signal to outside with the microcontroller.
5. tumble sensing device in bathroom as claimed in claim 4, which is characterized in that the communication interface includes that integrated circuit is total
Line, universal asynchronous receiver/transmitter (UART), serial peripheral interface or universal serial bus.
6. tumble sensing device in bathroom as claimed in claim 4, which is characterized in that the microcontroller, the non-voltile memory
And the communication interface is integrated into an one chip.
7. tumble sensing device in bathroom as described in claim 1, which is characterized in that further include：
One proximity sense to sense the user into the bathroom, and exports an enabling signal, to start the thermoelectric pile number
Group sensor.
8. tumble sensing device in bathroom as claimed in claim 7, which is characterized in that the proximity sense includes the burnt electricity of a number
Formula sensor.
9. tumble sensing device in bathroom as claimed in claim 7, which is characterized in that the proximity sense includes low consumption manifold formula
The burnt electric-type sensor of a number.
10. tumble sensing device in bathroom as claimed in claim 7, which is characterized in that the proximity sense includes that a number is burnt
Electric-type sensor, static power consumption stream is between 1-6 micromicroamperes.
11. tumble sensing device in bathroom as described in claim 1, which is characterized in that further include：
One wireless communication module is electrically connected with the signal processor, and wherein the signal processor passes through the radio communication mold
Block transmits the alarm signal to an external electronic.
12. tumble sensing device in bathroom as claimed in claim 11, which is characterized in that the wireless communication module includes one wireless
Local area network module, bluetooth communication, purple honeybee communication module (ZigBee) or wireless radio-frequency communication module.
13. tumble sensing device in bathroom as claimed in claim 11, which is characterized in that further include：
One gateway (gateway) communicates to connect with the wireless communication module, to receive the alarm signal, and transmits the warning
Signal is to an alarming device or a server.
14. tumble sensing device in bathroom as described in claim 1, which is characterized in that the signal processor binary conversion treatment should
Thermal imagery.
15. tumble sensing device in bathroom as described in claim 1, which is characterized in that the signal processor divides the thermal imagery
For top image and lower part image and the signal processor, the pixel reduction amount of the user is greater than in the top image
Or it is equal to one first setting value, and when pixel of the user does not cross the boundary of the thermal imagery exports the alarm signal.
16. tumble sensing device in bathroom as claimed in claim 15, which is characterized in that the region of the top image is greater than or waits
In the region of the lower part image.
17. tumble sensing device in bathroom as described in claim 1, which is characterized in that the signal processor calculates the thermal imagery
In the user a horizontal width and a vertical height, and be greater than in a ratio of the horizontal width and the vertical height or
The alarm signal is exported when equal to second setting value.
18. tumble sensing device in bathroom as described in claim 1, which is characterized in that M and N at least one be less than or
Equal to 128.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820804922.1U CN208156833U (en) | 2018-05-28 | 2018-05-28 | Bathroom tumble sensing device |
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| CN201820804922.1U CN208156833U (en) | 2018-05-28 | 2018-05-28 | Bathroom tumble sensing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109717770A (en) * | 2018-12-05 | 2019-05-07 | 浙江金迪控股集团有限公司 | A kind of domestic intelligent bathroom cabinet |
| CN111334986A (en) * | 2018-12-19 | 2020-06-26 | 众智光电科技股份有限公司 | Clothes treating device |
| CN111504476A (en) * | 2019-01-31 | 2020-08-07 | 众智光电科技股份有限公司 | Infrared temperature sensor |
| CN113888834A (en) * | 2021-10-09 | 2022-01-04 | 杭州耶利米信息科技有限公司 | Emergency alarm system in bathroom and corollary equipment and method |
-
2018
- 2018-05-28 CN CN201820804922.1U patent/CN208156833U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109717770A (en) * | 2018-12-05 | 2019-05-07 | 浙江金迪控股集团有限公司 | A kind of domestic intelligent bathroom cabinet |
| CN111334986A (en) * | 2018-12-19 | 2020-06-26 | 众智光电科技股份有限公司 | Clothes treating device |
| CN111504476A (en) * | 2019-01-31 | 2020-08-07 | 众智光电科技股份有限公司 | Infrared temperature sensor |
| CN113888834A (en) * | 2021-10-09 | 2022-01-04 | 杭州耶利米信息科技有限公司 | Emergency alarm system in bathroom and corollary equipment and method |
| CN113888834B (en) * | 2021-10-09 | 2023-04-11 | 浙江杰翎健康科技有限公司 | Emergency alarm system in bathroom and corollary equipment and method |
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