CN210631211U - Heart rate sensor and electronic equipment for collecting heart rate - Google Patents
Heart rate sensor and electronic equipment for collecting heart rate Download PDFInfo
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- CN210631211U CN210631211U CN201920584924.9U CN201920584924U CN210631211U CN 210631211 U CN210631211 U CN 210631211U CN 201920584924 U CN201920584924 U CN 201920584924U CN 210631211 U CN210631211 U CN 210631211U
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Abstract
The utility model discloses a heart rate sensor and gather electronic equipment of heart rate, this heart rate sensor includes the base plate, and light-insulated ground is provided with the first light wave emission module that is used for launching the required green light wave of test heart rate each other on the base plate, the second light wave emission module that is used for launching the required red light wave of test blood oxygen and heart rate and infrared light wave, the first light wave receiving module and the second light wave receiving module that are used for receiving the green light wave, red light wave and the infrared light wave that reflect back; the first light wave receiving modules and the second light wave receiving modules are respectively positioned at two sides of the first light wave transmitting module, and the second light wave transmitting modules are arranged in two groups and are respectively positioned at one sides of the first light wave receiving modules and the second light wave receiving modules, which are far away from the first light wave transmitting module.
Description
Technical Field
The utility model relates to an optical sensor technical field, more specifically relates to an electronic equipment of rhythm of the heart sensor and collection rhythm of the heart.
Background
In modern society, due to factors such as unreasonable life style and dietary structure of people, some cardiovascular diseases such as hypertension and coronary heart disease gradually become common diseases and frequently encountered diseases in clinical medicine, most of the diseases belong to chronic diseases, can only be controlled but cannot be cured, patients need to go to hospitals for examination and take medicines regularly, but the occurrence of sudden conditions still cannot be avoided, so that the heart rate change of the patients needs to be monitored in real time, and the problems are found in time. With the improvement of living standard of people, more and more people begin to keep healthy through scientific sports, and in order to ensure the reasonability of the amount of exercise and the effect of exercise, the people have accepted and accepted more and more widely by using heart rate equipment to monitor the heart rate and reasonably make an exercise plan.
In recent years, blood oxygen sensors, blood pressure sensors and heart rate sensors are applied to products such as intelligent equipment, portable measuring equipment and portable medical instruments. Heart rate sensors currently on the market are generally mainly divided into two forms, a separation scheme and an integration scheme: the separation scheme adopts discrete elements, needs to be carried out for many times during installation, has larger installation position error, increases the position inconsistency between the light-emitting element and the receiving element, causes poor consistency of received signals, has the defects of large size and the like because the separation scheme needs to carry out grating design on a complete machine matching structure, and is more complicated because different LEDs and PD accessories need to be continuously selected for matching in continuous platform updating and updating; the integration scheme in the prior art is mostly an integration mode of a photodiode PD and an LED lamp, and has the defects of large size, low integration level and the like.
In view of the above, a new technical solution is needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a new technical scheme of electronic equipment of rhythm of the heart sensor and collection rhythm of the heart.
According to the utility model discloses a first aspect provides a heart rate sensor, which comprises a substrate, be provided with the optoisolation each other on the base plate:
a first light wave emitting module configured to emit green light waves required for testing a heart rate;
a second light wave emitting module configured to emit red and infrared light waves required for testing blood oxygen and heart rate;
the first light wave receiving module and the second light wave receiving module are configured to receive the reflected green light wave, red light wave and infrared light wave;
the first light wave receiving modules and the second light wave receiving modules are respectively positioned at two sides of the first light wave transmitting module, and the second light wave transmitting modules are arranged in two groups and are respectively positioned at one sides of the first light wave receiving modules and the second light wave receiving modules far away from the first light wave transmitting module;
optionally, the optical transceiver further comprises an isolation grating wall covering the substrate, the isolation grating wall is provided with a plurality of accommodating grooves communicated with the substrate, and the positions of the accommodating grooves correspond to the positions of the first light wave emitting module, the second light wave emitting module, the first light wave receiving module and the second light wave receiving module respectively.
Optionally, the substrate and the isolated grating wall are integrally formed, or the substrate and the isolated grating wall are bonded or welded together.
Optionally, the optical transceiver further includes an analog front end module and a power management module disposed on the substrate, one of the first optical wave receiving module and the second optical wave receiving module is attached to the analog front end module, and the other is attached to the power management module.
Optionally, the analog front end module and/or the power management module are embedded in the substrate.
Optionally, the first light wave emitting module includes three green LED chips, and the three green LED chips are distributed on the same straight line.
Optionally, each group of the second light wave emitting modules includes a red light LED chip and an infrared light LED chip, and the red light LED chip and the infrared light LED chip in each group of the second light wave emitting modules are distributed on a straight line parallel to the three green light LED chips.
Optionally, a transparent colloid is filled in the holding tank of the isolation grating wall, or transparent glass is arranged on the holding tank of the isolation grating wall.
Optionally, the distance between the first light wave transmitting module and the first light wave receiving module and/or the distance between the first light wave transmitting module and the second light wave receiving module is 2.3-3.2 mm; the distance between the second light wave transmitting module and the second light wave receiving module is 6-10 mm.
According to the utility model discloses a second aspect provides an electronic equipment of gathering rhythm of the heart, include as above the rhythm of the heart sensor.
The utility model discloses a heart rate sensor can effectively increase the detection range and the signal strength of blood oxygen signal through respectively setting up a second light wave emission module who is used for transmitting test blood oxygen and the required red light wave of rhythm of the heart and infrared light wave in base plate both sides to can effectively improve the degree of accuracy of this heart rate sensor monitoring, even if this heart rate sensor takes place the slope skew, can record more accurate data equally.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is the utility model relates to a heart rate sensor's structural schematic.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to fig. 1, an embodiment of the present invention provides a heart rate sensor, which includes a substrate, wherein the substrate is a PCB or BT board, and a circuit layout of the heart rate sensor is preset in the PCB or BT board. The substrate is provided with a first light wave emitting module 1 and a second light wave emitting module 2, the first light wave emitting module 1 is configured to emit green light waves required by testing heart rate, and the second light wave emitting module 2 is configured to emit red light waves and infrared light waves required by testing blood oxygen and heart rate; the substrate is further provided with a first light wave receiving module 3 and a second light wave receiving module 4, and the first light wave receiving module 3 and the second light wave receiving module 4 can adopt a photodiode PD for converting optical signals into electrical signals; the first light wave receiving module 3 and the second light wave receiving module 4 are configured to receive the reflected green light wave, the red light wave and the infrared light wave, and the two light wave receiving modules can effectively increase the detection range of the reflected light reception, and can also respectively receive the red light wave, the infrared light wave and the green light wave reflected back from the skin or the blood, so as to respectively test the blood oxygen saturation data, the heart rate data and the like, thereby improving the detection effect. The first light wave receiving modules 3 and the second light wave receiving modules 4 are respectively positioned at two sides of the first light wave transmitting module 1, and the second light wave transmitting modules 2 are arranged in two groups and are respectively positioned at one sides of the first light wave receiving modules 3 and the second light wave receiving modules 4 far away from the first light wave transmitting module 1; that is, the first light wave receiving module 3 is located between the first light wave emitting module 1 and one set of the second light wave emitting modules 2, and the second light wave receiving module 4 is located between the first light wave emitting module 1 and the other set of the second light wave emitting modules 2. The embodiment of the utility model provides a set of second light wave emission module 2 is set up respectively in the both sides of base plate, multiplicable blood oxygen signal's detection range and signal strength, and can effectively improve the degree of accuracy of this heart rate sensor monitoring, if only set up a set of second light wave emission module 2, when heart rate sensor takes place the slope skew then, then can influence the effect of its monitoring, and set up two sets of second light wave emission module 2 then can effectively avoid this problem, even if this heart rate sensor takes place the slope skew, just can record more accurate data.
Further, the heart rate sensor further comprises an isolation grating wall 5 covering the substrate, wherein the isolation grating wall 5 is made of a light-tight material and used for isolating the first light wave emitting module 1, the second light wave emitting module 2, the first light wave receiving module 3 and the second light wave receiving module 4, so that light signals emitted by the first light wave emitting module 1 and the second light wave emitting module 2 can be effectively prevented from being directly sensed by the first light wave receiving module 3 and the second light wave receiving module 4, and the first light wave receiving module 3 and the second light wave receiving module 4 cannot interfere with the first light wave emitting module 1 and the second light wave emitting module 2. The isolation grating wall 5 is provided with a plurality of accommodating grooves 51 communicated with the substrate, and the positions of the accommodating grooves 51 correspond to the positions of the first light wave emitting module 1, the second light wave emitting module 2, the first light wave receiving module 3 and the second light wave receiving module 4, respectively, that is, the first light wave emitting module 1, the first light wave receiving module 3, the second light wave receiving module 4 and each group of second light wave emitting modules 2 are located at the position of one accommodating groove 51, respectively.
In one embodiment, the heart rate sensor further comprises an analog front end module (AFE)6 and a power management module 7 disposed on a substrate, one of the first optical wave receiving module 3 and the second optical wave receiving module 4 is attached to the analog front end module 6, and the other is attached to the power management module 7; the analog front end module 6 is used for feeding back and converting signals; the power management module 7 is used for supplying power to the first light wave transmitting module 1, the second light wave transmitting module 2, the first light wave receiving module 3 and the second light wave receiving module 4.
In one embodiment, the power management module 7 is a PMIC chip, and the PMIC chip can control multiple circuits simultaneously. In one embodiment, the analog front-end module 6 and/or the power management module 7 are/is embedded in the substrate, and the embedding of the analog front-end module 6 and/or the power management module 7 in the substrate can reduce the thickness of the whole heart rate sensor from about 0.7-0.8mm to about 0.4mm, thereby effectively reducing the size of the heart rate sensor.
In one embodiment, the first light wave emitting module 1 comprises three green LED chips, and the three green LED chips are distributed on the same straight line. The green light wave emitted by the green light LED chip can measure the change condition of the density when blood flows in a blood vessel, and heart rate data can be tested after further calculation. Three green LED chips are provided because the intensity of the green light emitted is higher and the green signal returned from the blood is more. And three green glow LED chips are the linear arrangement, can increase the detection range, also have optical signal feedback when this heart rate sensor takes place the slope skew, the condition that the signal can not be detected when only setting up a green glow LED chip can not appear.
In one embodiment, each set of the second light wave emitting modules 2 includes a red LED chip 21 and an infrared LED chip 22, and the red LED chip 21 and the infrared LED chip 22 can be used for testing blood oxygen saturation data, heart rate data, and the like. The red LED chips 21 and the infrared LED chips 22 in each set of the second light wave emitting modules 2 are distributed on a straight line parallel to the three green LED chips, so that the distribution can increase the detection range.
In one embodiment, the distance between the first light wave emitting module 1 and the first light wave receiving module 3 and/or the distance between the first light wave emitting module 1 and the second light wave receiving module 4 is 2.3-3.2mm (if the module size is required, it is not limited to reach the distance between the two light wave receiving modules and the first light wave emitting module 1; however, in order to reduce the module size, the distance between at least one light wave receiving module and the first light wave emitting module 1 must meet 2.3-3.2mm, and of course, it is best if the distance between the two light wave receiving modules and the first light wave emitting module 1 reaches the same); the distance between the second light wave transmitting module 2 and the second light wave receiving module 4 is 6-10 mm. By adjusting the distance between the first light wave emitting module 1 and the first light wave receiving module 3 and the distance between the second light wave emitting module 2 and the second light wave receiving module 4, a better optical distance can be achieved, so that the first light wave receiving module 3 can better receive the green light waves reflected back from the skin or blood, the second light wave receiving module 4 can better receive the red light waves and the infrared light waves reflected back from the skin or blood, or the first light wave receiving module 3 and the second light wave receiving module 4 can simultaneously receive the red light waves, the infrared light waves and the green light waves reflected back from the skin or blood, and the average value is obtained through multiple calculations, thereby being beneficial to realizing accurate detection.
In one embodiment, the substrate is integrally formed with the isolation grating walls 5; in this embodiment, when the SIP package is performed on the heart rate sensor, the isolation grating wall 5 and the substrate are manufactured as a whole by injection molding, then the first optical wave transmitting module 1, the two sets of second optical wave transmitting modules 2, the analog front end module 6 and the power management module 7 are mounted on the substrate in a surface mount manner at positions corresponding to the receiving groove 51 of the isolation grating wall 5, of course, the analog front end module 6 may be embedded in the substrate in advance, one of the first optical wave receiving module 3 and the second optical wave receiving module 4 is mounted on the analog front end module 6, and the other is mounted on the power management module 7, then the electrodes of the first optical wave transmitting module 1, the two sets of second optical wave transmitting modules 2, the first optical wave receiving module 3 and the second optical receiving module 4 are connected to the PCB bonding pad of the substrate by wire bonding, and finally, filling a light-transmitting colloid in the accommodating groove 51 of the isolation grating wall 5, or arranging light-transmitting glass on the accommodating groove 51 of the isolation grating wall 5 in an injection molding press fit or sticking mode.
In one embodiment, the substrate is bonded or welded to the isolation grating walls 5; in this embodiment, before SIP packaging, the heart rate sensor is first formed by injection molding an isolation grating wall 5 matching the shape and size of the substrate through a mold, the isolation grating wall 5 has an accommodating groove 51, and then the first optical wave emitting module 1, the two sets of second optical wave emitting modules 2, the analog front end module 6 and the power management module 7 are mounted on the substrate in a patch manner, of course, the analog front end module 6 may be embedded in the substrate in advance, when mounting, it is noted that the positions of the first optical wave emitting module 1, the two sets of second optical wave emitting modules 2, the analog front end module 6 and the power management module 7 need to correspond to the position of the accommodating groove 51, and then one of the first optical wave receiving module 3 and the second optical wave receiving module 4 is mounted on the analog front end module 6, and the other is mounted on the power management module 7, then, electrodes of the first light wave transmitting module 1, the two groups of second light wave transmitting modules 2, the first light wave receiving module 3 and the second light wave receiving module 4 are connected with a PCB bonding pad of the substrate in a lead bonding mode, and finally, the pre-injection molded isolation grating wall 5 is combined with the substrate into a whole in a bonding or ultrasonic welding mode; the light-transmitting glass can be injected into the accommodating groove 51 of the isolation grating wall 5 in advance in a two-color injection molding manner, and the accommodating groove 51 of the isolation grating wall 5 can be filled with light-transmitting colloid.
In the above two embodiments, no matter the light-transmitting glass or the light-transmitting colloid, the light waves emitted by the first light-wave emitting module 1 and the second light-wave emitting module 2 can be emitted to the outside through the accommodating groove 51 on the isolation grating wall 5, so as to be received by the skin or blood of the human body, and the first light-wave receiving module 3 and the second light-wave receiving module 4 can respectively receive the light waves entering from the corresponding accommodating groove 51 and reflected by the skin or blood of the human body. In addition, the mode of filling the transparent adhesive in the accommodating groove 51 of the isolation grating wall 5 can protect the first light wave emitting module 1, the second light wave emitting module 2, the first light wave receiving module 3 and the second light wave receiving module 4, and the transparent adhesive can fix the above elements after being cured, and the functions of the elements are not affected. The mode that sets up printing opacity glass on the holding tank 51 of keeping apart light grid wall 5 is moulded plastics and is set up also can protect first light wave emission module 1, second light wave emission module 2, first light wave receiving module 3 and second light wave receiving module 4, and the thickness of paying attention to printing opacity glass need not influence whole heart rate sensor's size this moment. Whether the transparent colloid or the transparent glass is adopted, attention needs to be paid to the refractive index of the transparent colloid to be close to that of human skin so as not to influence the test effect.
During actual use, the heart rate sensor measures by adopting a mode of being close to the skin of a human body, light rays emitted by the first light wave emitting module 1 and the second light wave emitting module 2 irradiate the skin of the human body, one part of the light rays can be absorbed by skin soft tissues, and the other part of the light rays is reflected back from the skin or blood and is received by the first light wave receiving module 3 and the second light wave receiving module 4 respectively. Because the difference of oxygen content in blood and the like can cause the difference of red light and infrared light absorption rates, reflected light has weak change, so that the change of output current of the first light wave receiving module 3 and the second light wave receiving module 4 is caused, the change is converted by the analog front end module 6 and then is sent to a processor and other parts for further processing, for example, the oxygen content in blood is calculated by comparing the difference of the intensity of red light signals and infrared light signals, and then the blood oxygen value is obtained; moreover, when the heart beats, blood flows in the skin, so that the blood content in the skin changes, and the heart rate can be calculated by calculating the relation between the change of the red light signal or the infrared light signal and the time. The change in blood content can also be measured by the change in the green signal, and the heart rate data can also be tested by calculating the time dependence of the change in the green signal.
The embodiment of the utility model provides a still provide an electronic equipment of collection rhythm of the heart, it includes as above rhythm of the heart sensor. The electronic equipment for collecting the heart rate can be an intelligent bracelet, an intelligent watch, an intelligent mobile phone, a portable medical device and other electronic products.
The space inside products or consumer electronics products are dressed to intelligence such as above-mentioned intelligence bracelet, intelligent wrist-watch, smart mobile phone is all very compact, and the space that complete machine mainboard and other components and parts occupy is also more, consequently leaves the capacity space of battery just very little, can cause the standby time of complete machine to reduce correspondingly like this. The utility model discloses heart rate sensor measures the wafer seal of parts such as simulation front end module, light wave receiving module, light wave emission module, power management module into a whole through the mode of SIP encapsulation, adjusts the light path design distance of each wafer during the design so that the light path performance reaches best effect. By means of the SIP packaging method, not only can heart rate detection, blood oxygen detection and blood pressure detection be achieved, but also the size of the heart rate sensor can be made to be very small and equal to that of a single PD. And, the embodiment of the utility model provides a go the base plate the inside of heart rate sensor is buried underground to the simulation front end module that originally can only put on the complete machine mainboard, can further reduce the space that occupies the complete machine mainboard like this. The embodiment of the utility model provides a development to terminal customer has reduced the complicated design of unnecessary, and the equipment and the light path design of producing the line are more convenient, reduce and occupy inside space, thereby increase battery capacity extension stand-by time.
Although certain specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A heart rate sensor, comprising a substrate on which are disposed optically isolated from each other:
a first light wave emitting module (1), the first light wave emitting module (1) being configured for emitting green light waves required for testing heart rate;
a second light wave emitting module (2), wherein the second light wave emitting module (2) is configured to emit red light waves and infrared light waves required for testing blood oxygen and heart rate;
a first light wave receiving module (3) and a second light wave receiving module (4), wherein the first light wave receiving module (3) and the second light wave receiving module (4) are configured to receive the reflected green light wave, red light wave and infrared light wave;
the first light wave receiving module (3) and the second light wave receiving module (4) are respectively located on two sides of the first light wave transmitting module (1), and the second light wave transmitting module (2) is provided with two groups and is respectively located on one side, far away from the first light wave transmitting module (1), of the first light wave receiving module (3) and the second light wave receiving module (4).
2. The heart rate sensor according to claim 1, further comprising an isolation grating wall (5) covering the substrate, wherein the isolation grating wall (5) is provided with a plurality of accommodating grooves (51) communicated with the substrate, and the positions of the accommodating grooves (51) correspond to the positions of the first light wave emitting module (1), the second light wave emitting module (2), the first light wave receiving module (3) and the second light wave receiving module (4), respectively.
3. The heart rate sensor according to claim 2, wherein the substrate is integrally formed with the isolation grating wall (5) or the substrate is bonded or welded to the isolation grating wall (5).
4. The heart rate sensor according to claim 1, further comprising an analog front end module (6) and a power management module (7) disposed on a substrate, wherein one of the first light wave receiving module (3) and the second light wave receiving module (4) is attached to the analog front end module (6) and the other is attached to the power management module (7).
5. Heart rate sensor according to claim 4, wherein the analog front end module (6) and/or the power management module (7) are embedded within a substrate.
6. Heart rate sensor according to any one of claims 1-5, characterized in that the first light wave emitting module (1) comprises three green LED chips, and the three green LED chips are distributed on the same straight line.
7. The heart rate sensor according to any one of claims 1 to 5, wherein each set of the second light wave emitting modules (2) comprises one red LED chip (21) and one infrared LED chip (22), and the red LED chip (21) and the infrared LED chip (22) in each set of the second light wave emitting modules (2) are distributed on a straight line parallel to the three green LED chips.
8. The heart rate sensor according to claim 2 or 3, wherein the accommodating groove (51) of the isolation grating wall (5) is filled with a light-transmitting colloid, or the accommodating groove (51) of the isolation grating wall (5) is provided with light-transmitting glass.
9. Heart rate sensor according to any of claims 1-5, wherein the distance between the first light wave emitting module (1) and the first light wave receiving module (3) and/or the first light wave emitting module (1) and the second light wave receiving module (4) is 2.3-3.2 mm; the distance between the second light wave transmitting module (2) and the second light wave receiving module (4) is 6-10 mm.
10. An electronic device for capturing heart rate, characterized in that it comprises a heart rate sensor according to any of claims 1-9.
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| CN201920584924.9U CN210631211U (en) | 2019-04-26 | 2019-04-26 | Heart rate sensor and electronic equipment for collecting heart rate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200605A (en) * | 2019-04-26 | 2019-09-06 | 青岛歌尔智能传感器有限公司 | A kind of heart rate sensor and the electronic equipment for acquiring heart rate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110200605A (en) * | 2019-04-26 | 2019-09-06 | 青岛歌尔智能传感器有限公司 | A kind of heart rate sensor and the electronic equipment for acquiring heart rate |
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