CN210185565U - Interpolation array signal detection structure of PPG sensor - Google Patents
Interpolation array signal detection structure of PPG sensor Download PDFInfo
- Publication number
- CN210185565U CN210185565U CN201920578415.5U CN201920578415U CN210185565U CN 210185565 U CN210185565 U CN 210185565U CN 201920578415 U CN201920578415 U CN 201920578415U CN 210185565 U CN210185565 U CN 210185565U
- Authority
- CN
- China
- Prior art keywords
- light
- pieces
- photosensitive
- signal
- photoelectric receiving
- 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.)
- Active
Links
Images
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses an interleaved array signal detection structure of a PPG sensor, which comprises a basal disc, a plurality of luminous elements and a plurality of photosensitive elements, wherein the luminous elements and the photosensitive elements are arranged on the basal disc; the photosensitive pieces are arranged in a square array, the light-emitting pieces are evenly arranged in the square array, and the photosensitive pieces receive light emitted by the light-emitting pieces. The limit of the traditional single-wavelength photoelectric sensor on the medical value of human physiological signal monitoring and the range of a detection signal object is broken through, the problems of the utilization rate of light energy and the illumination intensity received by a photosensitive element are solved in a compromise mode, the signal intensity and effective signal components of PPG are improved, and the rear-end PPG signal processing device is convenient to process signals.
Description
Technical Field
The utility model relates to a biological signal sensor field especially relates to an insert array signal detection structure between PPG sensor.
Background
The detection of human body motion heart rate by using a photoplethysmography (PPG) technology is an application of an infrared nondestructive detection technology in biomedicine. The heart rate is calculated from the obtained pulse waveform by utilizing a photoelectric sensor to detect the difference of the reflected light intensity after the absorption of blood and tissues of a human body, tracing the change of the volume of a blood vessel in a cardiac cycle.
Currently, photoelectric structures with single wavelength are mature in the market, for example, most heart rate photoelectric detection sensors adopt a single 520nm LED and photoelectric receiving tube combined structure, blood oxygen photoelectric detection sensors adopt a single 650nm LED and photoelectric receiving tube combined structure, and other wavelength photoelectric monitoring is still under search. The current technical means is difficult to realize the integration of the multi-wavelength photoelectric transceiving module at the chip level, and under the limitation of the condition, the correlation among various human physiological indexes has to be ignored, so that the medical value of the monitored physiological signals is limited, and the monitoring object range of the photoelectric sensor is also limited.
Meanwhile, the combined structure of the LED lamp and the photoelectric receiving tube of most of PPG photoelectric detection sensors in the current market has the problems of unreasonable optical structure design and low light energy utilization efficiency, so that the PPG signal intensity and effective signal components in the PPG signals received by the photoelectric receiving tube are low.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention provides an interleaved array signal detection structure of a PPG sensor, which includes a base plate, and a plurality of light emitting elements and a plurality of light sensing elements disposed on the base plate; the photosensitive pieces are arranged in a square array, the light-emitting pieces are evenly arranged in the square array, and the photosensitive pieces receive light emitted by the light-emitting pieces.
Each light emitting piece emits light with different wavelengths, and each light sensing piece is provided with a filter device aiming at the different wavelengths; the light emitting piece is an LED lamp, and the light sensing piece is a photoelectric receiving tube.
Preferably, the plurality of light emitting elements are 4 LED lamps, and the plurality of light sensing elements are 9 photoelectric receiving tubes; the 9 photoelectric receiving tubes are arranged in a square matrix, and the LED lamp is arranged in the center of the adjacent 4 photoelectric receiving tubes.
The other is that the plurality of light emitting members are 12 LED lamps, and the plurality of light sensing members are 9 photoelectric receiving tubes; the 9 photoelectric receiving tubes are arranged in a square matrix, and the LED lamp is arranged between the adjacent 2 photoelectric receiving tubes.
The beneficial effects of the utility model reside in that: the limit of the traditional single-wavelength photoelectric sensor on the medical value of human physiological signal monitoring and the range of a detection signal object is broken through, the problems of the utilization rate of light energy and the illumination intensity received by a photosensitive element are solved in a compromise mode, the signal intensity and effective signal components of PPG are improved, and the rear-end PPG signal processing device is convenient to process signals.
Drawings
FIG. 1 is a first embodiment of the present solution;
fig. 2 is a second embodiment of the present solution.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
An interleaved array signal detection structure of a PPG sensor comprises a base plate, a plurality of light emitting elements and a plurality of light sensitive elements, wherein the plurality of light emitting elements and the plurality of light sensitive elements are arranged on the base plate; the photosensitive pieces are arranged in a square array, the light-emitting pieces are evenly arranged in the square array, and the photosensitive pieces receive light emitted by the light-emitting pieces.
By using the interleaved structure, the problems of light energy utilization rate and illumination intensity received by the photosensitive element can be solved. Through the interpolation, the waste of the light source of the light-emitting element is reduced, and the utilization rate is improved; meanwhile, the illumination intensity of the photosensitive element can be improved, and the photosensitive element is prevented from being unevenly illuminated. The intensity of the received PPG signal is effectively increased, and the signal to noise ratio of the PPG signal is increased, so that the rear-end PPG signal processing device can conveniently process the signal, and more accurate human body parameters can be obtained.
Each light emitting piece emits light with different wavelengths, and each light sensing piece is provided with a filter device aiming at the different wavelengths; the light emitting piece is an LED lamp, and the light sensing piece is a photoelectric receiving tube.
In a first embodiment of the present disclosure, as shown in fig. 1, the light emitting elements are 4 LED lamps, and the light sensing elements are 9 photoreceiving tubes; the 9 photoelectric receiving tubes are arranged in a square matrix, and the LED lamp is arranged in the center of the adjacent 4 photoelectric receiving tubes.
The 9 photoelectric receiving tubes and the 4 LED lamps are positioned on the same plane, and the 8 photoelectric receiving tubes are arranged in a 3-by-3 matrix by taking the middle photoelectric receiving tube as a center. The 4 LED lamps are arranged in parallel around the middle photoelectric receiving tube, and each LED lamp is arranged at the center of a diagonal position of the photoelectric receiving tube.
In a first embodiment of the present disclosure, as shown in fig. 2, the light emitting elements are 12 LED lamps, and the light sensing elements are 9 photoreceiving tubes; the 9 photoelectric receiving tubes are arranged in a square matrix, and the LED lamp is arranged between the adjacent 2 photoelectric receiving tubes.
The 9 photoelectric receiving tubes and the 12 LED lamps are positioned on the same plane, and the 12 LED lamps are arranged around the middle photoelectric receiving tube in parallel and are positioned at the central positions in every two adjacent photoelectric receiving tubes. The other photoelectric receiving tubes are arranged at equal intervals in a 3-by-3 matrix by taking the middle photoelectric receiving tube as a center.
According to the method for detecting the PPG sensor built-in surrounding type signal of the light emitting part, the light emitting part and the light sensitive part with the same wavelength form an acquisition group, the acquisition groups with different wavelengths are arranged, and the PPG signal of the physiological characteristics of the heart rate, the blood oxygen or the blood sugar of a human body is acquired.
Preferably, a 520nm light source is adopted to acquire a heart rate physiological characteristic PPG signal; collecting a blood oxygen physiological characteristic PPG signal by adopting a 650nm light source; and collecting a blood sugar physiological characteristic PPG signal by adopting a 800-950 nm light source.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (5)
1. An interleaved array signal detection structure of a PPG sensor is characterized by comprising a base plate, a plurality of light emitting parts and a plurality of light sensitive parts, wherein the plurality of light emitting parts and the plurality of light sensitive parts are arranged on the base plate; the photosensitive pieces are arranged in a square array, the light-emitting pieces are evenly arranged in the square array, and the photosensitive pieces receive light emitted by the light-emitting pieces.
2. The structure of claim 1, wherein each light emitting element emits light at a different wavelength, and each light sensing element has a filter device for the different wavelength.
3. The structure of claim 1, wherein the light emitting element is an LED lamp, and the light sensing element is a photo receiver tube.
4. The structure of claim 1, wherein the plurality of light emitting elements are 4 LED lamps, and the plurality of light sensing elements are 9 photoreceiving tubes; the 9 photoelectric receiving tubes are arranged in a square matrix, and the LED lamp is arranged in the center of the adjacent 4 photoelectric receiving tubes.
5. The structure of claim 1, wherein the plurality of light emitting elements are 12 LED lamps, and the plurality of light sensing elements are 9 photoreceiving tubes; the 9 photoelectric receiving tubes are arranged in a square matrix, and the LED lamp is arranged between the adjacent 2 photoelectric receiving tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920578415.5U CN210185565U (en) | 2019-04-25 | 2019-04-25 | Interpolation array signal detection structure of PPG sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920578415.5U CN210185565U (en) | 2019-04-25 | 2019-04-25 | Interpolation array signal detection structure of PPG sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210185565U true CN210185565U (en) | 2020-03-27 |
Family
ID=69878482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920578415.5U Active CN210185565U (en) | 2019-04-25 | 2019-04-25 | Interpolation array signal detection structure of PPG sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210185565U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115500800A (en) * | 2022-03-25 | 2022-12-23 | 张烁 | Wearable physiological parameter detection system |
| WO2023246276A1 (en) * | 2022-06-21 | 2023-12-28 | 荣耀终端有限公司 | Ppg module, measuring method for ppg signals and electronic device |
| CN115500800B (en) * | 2022-03-25 | 2024-10-25 | 张烁 | Wearable physiological parameter detection system |
-
2019
- 2019-04-25 CN CN201920578415.5U patent/CN210185565U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115500800A (en) * | 2022-03-25 | 2022-12-23 | 张烁 | Wearable physiological parameter detection system |
| CN115500800B (en) * | 2022-03-25 | 2024-10-25 | 张烁 | Wearable physiological parameter detection system |
| WO2023246276A1 (en) * | 2022-06-21 | 2023-12-28 | 荣耀终端有限公司 | Ppg module, measuring method for ppg signals and electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2002359673B2 (en) | High performance fluorescent optical sensor | |
| CN103876726B (en) | A kind of intelligent cardiac monitor device based on potential and photoelectric detecting method | |
| CN104224144B (en) | Photoplethysmographic photoelectric testing sensor | |
| CN110179438A (en) | Encirclement type signal detection structure and method built in a kind of illuminating part of PPG sensor | |
| CN210810971U (en) | Light sensing part built-in surrounding type signal detection structure of PPG sensor | |
| KR102209580B1 (en) | Ppg sensor package | |
| CN210185565U (en) | Interpolation array signal detection structure of PPG sensor | |
| CN103519826A (en) | Reflection-type blood oxygen saturation gauge and measuring method thereof | |
| FI3758606T3 (en) | A method of selecting the intensity of a light source for monitoring an analyte in blood, and a device thereof | |
| CN210300958U (en) | Built-in surrounding type signal detection structure of illuminating part of PPG sensor | |
| CN110823369B (en) | Reflection-type photoelectric volume wave analog calibration method and device | |
| CN210185571U (en) | Parallel type signal detection structure of PPG sensor | |
| US20220039708A1 (en) | Pulse oximetry using ambient light | |
| CN111329463A (en) | Motion artifact elimination system based on PPG heart rate measurement and implementation method thereof | |
| CN2362122Y (en) | Reflecting blood oxygen saturation monitoring instrument | |
| Wolling et al. | Unity in diversity: sampling strategies in wearable photoplethysmography | |
| CN217638657U (en) | Optical system of blood coagulation analyzer for dual-wavelength synchronous detection | |
| CN203524682U (en) | Reflective oxygen saturation measuring apparatus | |
| CN213606380U (en) | Reflection type pulse oximetry LED sensing device | |
| CN110179437A (en) | Encirclement type signal detection structure and method built in a kind of sensitive piece of PPG sensor | |
| CN216569946U (en) | Photoelectric signal acquisition device for noninvasive detection of heart rate and blood oxygen | |
| CN216569945U (en) | Photoelectric signal acquisition device for noninvasive detection of blood glucose | |
| CN204394526U (en) | Near infrared tissue oxygenation saturation Non-invasive detection probe | |
| CN216569947U (en) | Photoelectric signal acquisition device for noninvasive blood oxygen detection | |
| TWI815498B (en) | Sensing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 529, unit 1, building 10, poly champagne international, No. 77, Tianmu Road, hi tech Zone (West), Chengdu, Sichuan 610000 Patentee after: Chengdu weikexin Microelectronics Co.,Ltd. Address before: 610000, No. 6, 1, 1, Renhe street, 39 hi tech Zone, Sichuan, Chengdu Patentee before: Chengdu weikexin Microelectronics Co.,Ltd. |