CN206044621U - A kind of optical scanning formula heart rate monitor and wrist heart rate monitor - Google Patents

Abstract

The utility model proposes a kind of optical scanning formula heart rate monitor and wrist heart rate monitor.The optical scanning formula heart rate monitor includes heart rate sensor, and heart rate sensor includes：Near-infrared laser emitter, launches first laser；Branch optical waveguide component, receives first laser and branch is second laser and reference light；Light guides output block, receives and adjust second laser to form the 3rd laser, enables the 3rd laser to incide blood vessel, and light guiding output block includes the 1 multichannel optical waveguide array for arriving M or 1 to N optical waveguide switches；Light guides input block, receives and adjusts from the 4th laser of vasoreflex to form the 5th laser, and light guiding input block includes 1 to M multichannel optical waveguide array or 1 to N optical waveguide switches；Receiving light path part.A kind of optical scanning formula heart rate monitor and wrist heart rate monitor that this utility model is provided, can in real time, continuously, accurately measure the heart rate and the rhythm of the heart of human body in tranquillization and motion.

Description

A kind of optical scanning formula heart rate monitor and wrist heart rate monitor

Technical field

This utility model belongs to pulse wave monitoring technical field in electronic medical equipment, is related to using optics carry out Measurement, more particularly to a kind of optical scanning formula heart rate monitor and wrist heart rate monitor.

Background technology

Heart rate, is the frequency of heartbeat；The rhythm of the heart, is the rhythm and pace of moving things of heartbeat.Heart rate and the rhythm of the heart are all the sound of body, The health status of reflection body.Arrhythmia such as one of cardiovascular disease is exactly the change of heart rate or the rhythm of the heart.Heart rate, especially The maximum heart rate that can be reached when heart rate in motion and motion, and weigh body health situation, whether there is cardiovascular disease and pre- Show one of important indicator of mortality risk.The age it is close with sex identical in the case of, heart rate can reflect motion intensity, Property, energy metabolism, oxygen consumption, lactic acid accumulation, body whether fatigue, and post exercise recover etc..For example pass through heart rate Calorie that body is consumed in motor process etc. can be quantified.Using heart rate as the measurement criteria moved, we can control The intensity of motion, density and amount, realize that sport and body-building is scientific, find the suitable exercise heart rate area of oneself, reach safely, have Effect, the motion for preventing injury or body-building purpose.Additionally, the utility data storehouse that continuous record is generated not only can self monitor health Situation, and medical personnel and the potential cardiovascular risk of medical research early discovery, the such as start-stop of arrhythmia episode can be coordinated With the impact of persistent period or autonomic nerve to the rhythm of the heart (not normal).

Heart rate monitor mainly has two big class at present：Using amperometric aroused in interest have pectoral girdle formula (electrocardiosignal heart rate monitor) and Using photoelectricity volume measurement method without pectoral girdle formula (photoelectricity heart rate monitor).

Electrocardiosignal heart rate monitor needs to wear heart rate pectoral girdle, and its measuring principle is similar with electrocardiogram.Two in front of heart rate pectoral girdle The induction apparatuss with pole piece are contained in side, can sense the change of the current amplitude produced during each heart beating, by Radio Transmission Technology It is sent to heart rate monitor and is converted into heart beating numerical value (bpm, heart beating per minute).Remain most accurately currently with the heart rate monitor of pectoral girdle Civil heart rate measuring device, in being adapted to move mainly due to this quasi-instrument, the measurement of continuous heart rate, is to have deep love for sport and body-building The first-selection of personage.But inconvenience is worn in presence, motion mesothorax Tape movement produces the discomfort such as friction, inconvenient clear after motion Wash, it is of long duration the problems such as can produce abnormal flavour.

Photoelectricity heart rate monitor measuring principle is that in cardiac cycle, volume can change and cause based on the blood in blood vessel Change of the hemoglobin to light volume reflection.This kind of heart rate monitor is typically the form of wrist-watch or bracelet.Equipped with luminous on wrist-watch (ring) LED and light sensor:The emitting led light wave for sending certain wavelength (red or green, mostly green glow), light sensor can connect Receive the reflected light of arm skin and sense the change of distribution of light intensity and be converted into heart rate.Periphery blood volume is most when the heart contracts Absorbing amount is also maximum, and the light intensity for detecting is minimum.And in diastole, contrast, the light intensity for detecting are maximum, The light intensity Unlimited cycle that optical receiver is received changes in pulsating nature.Time between two maximums or two minima Removed by 60s and obtain heart rate (bpm, heart beating per minute).

The advantage of photoelectricity heart rate monitor be without the need for pectoral girdle, it is easy to carry, can be with test constantly heart rate.But it is based on light electric intensity Signal it is extremely faint, and be highly susceptible to the impact of various factors.When external interference it is slightly larger, for example motion when, just Can cause that measurement data is inaccurate, error is big.In addition, motion light emitters/optical receiving set is occurred with the relative position of blood vessel Change, more causes the accuracy for measuring and effectiveness to reduce.Therefore it is only suitable for measuring under rest state, holds in uncomfortable resultant motion The measurement of continuous heart rate.For realize it is reliable monitor, can increase the irradiated area of light source, photo-detector is also to be designed to be received not With the reflection at position.So more luminous energy are wasted in invalid irradiation in fact, and only very least a portion of reflected light is really carried There is the information of pulse in blood vessel.Therefore, also there is power consumption height, stand-by time.The Mio alpha in the current U.S. 2heart rate monitor watch, apple watch, FITBOX HXM, Adidas SMART RUN heart rate monitors, and Semen setariae bracelet light sensation version adopts this technology.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of optical scanning formula heart rate monitor and wrist heart rate monitor, can be real When, it is continuous, accurately measure tranquillization and centre of motion rate and the rhythm of the heart.

To solve above-mentioned technical problem, this utility model provides a kind of optical scanning formula heart rate monitor, including heart rate sensor, The heart rate sensor includes：

Near-infrared laser emitter, launches first laser；

Branch optical waveguide component, receives the first laser and branch is second laser and reference light；

Light guides output block, receives and adjusts the second laser to form the 3rd laser, enable the 3rd laser Blood vessel is incided enough, the light guiding output block includes the 1 multichannel optical waveguide array for arriving M or 1 to N optical waveguide switches；

Light guides input block, receives and adjusts from the 4th laser of the vasoreflex to form the 5th laser, described Light guiding input block includes the 1 multichannel optical waveguide array for arriving M or 1 to N optical waveguide switches；

Receiving light path part, including double optical interferometers, reception the 5th laser and the reference light are Jing after two-way interference Form the 6th laser；

Wherein M, N are integer and are more than 1.

According to one embodiment of the present utility model, described 1 to M multichannel optical waveguide array includes multistage 1 to 2 light splitting Optical path unit, in the transmission light path on all M roads is provided with phase controlling part to change the phase place of light beam in the transmission light path； Described 1 to N optical waveguide switch includes multistage 1 to 2 optical waveguide switch unit, double in each described optical waveguide switch unit Transmission light path is provided with the phase controlling part.

According to one embodiment of the present utility model, the phase controlling part includes being arranged in the transmission light path Metallic film, the phase controlling part adjust the material of the transmission light path by heating is powered to the metallic film Refractive index.

According to one embodiment of the present utility model, the phase controlling part includes liquid crystal layer and bipolar electrode, the liquid Crystal layer is arranged in the transmission light path, and the bipolar electrode is arranged on the liquid crystal layer, and the phase controlling part is by changing Become the voltage of the bipolar electrode to adjust the refractive index of the liquid crystal layer.

According to one embodiment of the present utility model, the phase controlling part includes polymeric layer and bipolar electrode, described Polymeric layer is arranged in the transmission light path, and the bipolar electrode is arranged on the polymeric layer, the phase controlling part The refractive index of the polymeric layer is adjusted by the voltage of the change bipolar electrode.

According to one embodiment of the present utility model, also including the first lenticule and the second lenticule, the 3rd laser The blood vessel is reached through first lenticule；It is defeated that 4th laser reaches the light guiding through second lenticule Enter part.

According to one embodiment of the present utility model, first lenticule and the second lenticule are layer structure, comprising Multilamellar has the silicon oxynitride layer of different refractivity.

According to one embodiment of the present utility model, first lenticule and light guiding output block one into Type, second lenticule and light guiding input block are integrally formed.

This utility model additionally provides a kind of wrist heart rate monitor, including table body and the watchband being connected with the table body, described Table body includes aforesaid optical scanning formula heart rate monitor.

According to one embodiment of the present utility model, the table body also includes message processing module, display module and wireless Transport module, described information processing module are electrically connected the optical scanning formula heart rate monitor, the display module and the nothing Line transport module.

A kind of optical scanning formula heart rate monitor and wrist heart rate monitor that this utility model is provided, interfere former using optical scanning formula Reason is dynamic accurately and reliably to record by measuring return optical path and phase contrast between laser beam and reference light of reflection,arterial The amplitude of contraction and diastole of the arteries and veins in each cardiac cycle.Blood vessels caliber in paradoxical expansion diastole to maximum, in heart Minimum is contracted to during relaxing period, by continuous measurement can the monitoring rhythm of the heart change, therefore, it is possible to it is real-time, continuous, accurately survey Amount tranquillization and centre of motion rate and the rhythm of the heart.

Description of the drawings

It is this utility model to be further understood to provide including accompanying drawing, they are included and constitute of the application Point, accompanying drawing shows embodiment of the present utility model, and plays a part of to explain this utility model principle together with this specification. In accompanying drawing：

Fig. 1 shows the structural representation of the heart rate sensor of this utility model one embodiment.

Fig. 2 shows the structure of the multichannel optical waveguide array of the 1 to M of the heart rate sensor of this utility model one embodiment Schematic diagram.

Fig. 3 shows that the structural representation of N optical waveguide switches is arrived in the 1 of the heart rate sensor of this utility model one embodiment Figure.

Fig. 4 A show the structural representation of common fiber waveguide in prior art.

Fig. 4 B are the overlooking the structure diagrams of Fig. 4 A.

Fig. 5 A are the structural representations () that phase controlling part is provided with Fig. 4 A.

Fig. 5 B are the structural representations (two) that phase controlling part is provided with Fig. 4 A.

Fig. 5 C are the structural representations (three) that phase controlling part is provided with Fig. 4 A.

Fig. 6 A show an output channel and the first lenticular perspective of light guiding output block of the present utility model Figure.

Fig. 6 B are the side structure schematic diagrams of Fig. 6 A.

Fig. 7 shows the structural representation of the branch optical waveguide component of the heart rate sensor of this utility model one embodiment Figure.

Fig. 8 shows the structural representation of the receiving light path part of the heart rate sensor of this utility model one embodiment.

Fig. 9 shows the structural representation of the photo-detector of the heart rate sensor of this utility model one embodiment.

Figure 10 shows the structural representation of one embodiment of wrist heart rate monitor of the present utility model.

Figure 11 shows the structural representation of one embodiment of wrist heart rate monitor table body of the present utility model.

Specific embodiment

Now with detailed reference to Description of Drawings embodiment of the present utility model.In the case of any possible, all attached Same or analogous part will be represented in figure using identical labelling.Although additionally, the term used in this utility model It is to select from public term, but some terms mentioned in this utility model description is probably applicant Come selection, the explanation in the relevant portion of description herein of its detailed meanings by his or her judgement.In addition, it is desirable to not only Pass through used actual terms, and the meaning for being also to be contained by each term is understanding this utility model.

This utility model provides a kind of a kind of using CVD technology realization, the optical scanning based on fiber waveguide platform Formula heart rate monitor.The optical scanning formula heart rate monitor includes heart rate sensor.Fig. 1 shows the heart rate of this utility model one embodiment The structural representation of sensor.As shown in figure 1, heart rate sensor 11 includes near-infrared laser emitter 20, branch fiber waveguide portion Part 70, light guiding output block 40, light guiding input block 50 and receiving light path part 80.Wherein, near-infrared laser emitter 20 launch first laser 121.Branch optical waveguide component 70 receives first laser 121 and branch first laser 121 is swashed for second Light 124 and reference light 122.The light beam of second laser 124 is introduced in light guiding output block 40, and light guiding output block 40 connects Second laser 124 is received and is adjusted to form the 3rd laser 43, the 3rd laser 43 can incide blood vessel 101.As illustrated, blood vessel The fluctuation profile 102 of pulse wave is labelled with 101.The information of pulse wave is loaded with from the 4th laser 53 of the reflection of blood vessel 101, Light guiding input block 50 is received and exports the 5th laser 125 after adjusting the 4th laser 53.5th laser 125 and reference light 122 Realize that two-way is interfered on receiving light path part 80, received light path part is after 80s to form the 6th laser 123.

To improve the detection effectiveness of laser beam, a kind of heart rate sensor 11 of the present utility model is to second laser 124 And the 4th the directivity of laser 53 (reflected light light beam) be all controlled by, vascular pulsation most strength can be found with adjust automatically. Light guides output block 40 and light guiding input block 50 to realize the incident and outgoing of laser beam respectively.Wherein light guiding output Part 40 includes 1 to M multichannel optical waveguide array or 1 to N optical waveguide switches, and wherein M, N are for integer and are more than 1；Likewise, light Guiding input block 50 includes 1 to M multichannel optical waveguide array or 1 to N optical waveguide switches, and wherein M, N are for integer and are more than 1.

Specifically, as shown in figure 1, fluctuate the mark of profile 102 is the tube wall of the blood vessel 101 that pulse wave is caused Volt, pulse rise and fall and can change the light beam of exploring laser light.3rd laser 43 (incident beam) reaches blood vessel 101, via 101 table of blood vessel The light path of the 4th laser 53 (the reflected beams) of cutaneous reflex changes, so as to cause the phase place change of laser beam.Each Individual cardiac cycle can all produce the peak value of a diastole, and the frequency that peak value repeats is exactly heart rate.

Further, heart rate sensor 11 also includes photo-detector 30.Photo-detector 30 receives the 6th laser 123 (interferes Signal), the 6th laser 123 contains the abundant information of the pulse wave of blood vessel 101, and these interference signals are turning through modulus sampling Change, rear stage data processing unit such as monitoring station etc. can be passed to carry out pulse wave after the operation such as denoising Deng data analysiss so as to obtaining heart rate.

In one embodiment, 1 to M multichannel optical waveguide array includes multistage 1 to 2 light splitting optical path unit, and arrives 1 Each output light path after the multichannel light splitting on M roads is provided with phase controlling part.Fig. 2 shows this utility model one embodiment Pulse wave sensor 1 to M multichannel optical waveguide array structural representation.The light wave on 1 to 8 tunnels is illustrated that in figure Array 46 is led, 3 grade 1 to 2 of light splitting optical path unit 41 is included, phase controlling part 42 is provided with each output light path.The 124 Jing of dual-laser light splitting optical path units 41 at different levels form 8 tunnel output lights, and phase controlling part 42 can be adjusted per output light all the way Phase place, all phase controlling parts 42 can co-ordination, realize the Angle ambiguity of the 3rd laser 43 (incident beam).

In another embodiment, 1 to N multichannel optical waveguide switch includes multistage 1 to 2 optical waveguide switch unit, and Phase controlling part is provided with double transmission light paths of each optical waveguide switch unit.Fig. 3 shows one reality of this utility model Apply example pulse wave sensor 1 to N optical waveguide switches structural representation.The fiber waveguide on 1 to 8 tunnels is illustrated that in figure Switch 47, includes 3 grade 1 to 2 of optical waveguide switch unit 71, sets in double transmission light paths of each optical waveguide switch unit 71 There is phase controlling part 42.124 Jing of second laser optical waveguide switch units 71 at different levels form 8 tunnel output lights.Phase controlling part The phase place of 42 output lights that can adjust each optical waveguide switch unit 71, i.e., carry out channel selecting to output light.All phase places Control unit 42 can co-ordination, realize the 3rd laser 43 (incident beam) passage control.In one embodiment, light wave Switch element 71 is led using MZI (Mach-Zehnder interferometer, Mach-Cen Deer interferometers) structure.

In the same manner, light guiding input block 50 can also be include 1 to M multichannel optical waveguide array or 1 to N fiber waveguide open Close, wherein M, N are integer and are more than 1.Light guiding input block 50 can be controlled by the angle of reflected light light beam or passage.

Even if heart rate sensor 11 is changed with the relative position of blood vessel 101, output block 40 and light are guided by light Guiding control of the input block 50 to the directivity of laser beam, remains to keep the effectiveness of detection.For example walking, running In motor process, heart rate sensor 11 can be changed with the relative position of blood vessel 101, the signal to noise ratio drop of receiving light path part 80 It is low, after finding that signal to noise ratio is reduced heart rate sensor 11 can closed loop change phase controlling part 42, by phase controlling part 42 To adjust the angle or passage of laser beam, so as to ensure that the 3rd laser 43 can be incided on blood vessel 101, and the 5th laser energy Received by receiving light path part 80, and then realize the effectiveness of detection, reduced power consumption and improve sensitivity.

Fig. 4 A show the structural representation of common fiber waveguide in prior art.Fig. 4 B are that the plan structure of Fig. 4 A is illustrated Figure.As illustrated, transmission channel (basic waveguiding structure) generally includes substrate 61, covering 62 and core waveguide 66.Laser beam Can enter from the side of core waveguide 66, opposite side goes out.

Fig. 5 A are the structural representations () that phase controlling part is provided with Fig. 4 A.Fig. 5 B are provided with Fig. 4 A The structural representation (two) of phase controlling part.Fig. 5 C are the structural representations that phase controlling part is provided with Fig. 4 A (3).Unrestricted as an example, phase controlling part 42 can be one kind of following 3 kinds of structures.

With reference to Fig. 5 A, phase controlling part 42 includes the metallic film 63 being arranged on the covering 62 of output light path.Change speech It, metallic film 63 can be deposited on covering 62.Phase controlling part 42 is by the heating that is powered to metallic film 63 to adjust The refractive index of covering 62.

With reference to Fig. 5 B, phase controlling part 42 includes liquid crystal cell layer 64,67 and bipolar electrode 65.Liquid crystal cell layer 64,67 Can be liquid crystal packaged glass layer and liquid crystal material layer respectively.Liquid crystal cell layer 64,67 is stacked on the covering 62 of output light path, Liquid crystal material can be injected on covering 62 in processing technology, bipolar electrode 65 is arranged on liquid crystal layer 64.The folding of liquid crystal material The rate of penetrating can be changed by electric field, and phase controlling part 42 adjusts liquid crystal cell layer 64,67 by the voltage of change bipolar electrode 65 Refractive index.

With reference to Fig. 5 C, phase controlling part 42 includes polymeric layer 68 and bipolar electrode 65.Polymeric layer 68 is arranged on output On the covering 62 of light path, polymeric material can be injected on covering 62 in processing technology, bipolar electrode 65 is arranged on polymer On layer 68.Because the refractive index of polymeric material again may be by electric field change, phase controlling part 42 is by changing The voltage of bipolar electrode 65 is adjusting the refractive index of polymeric layer 68.

In one embodiment of the present utility model, heart rate sensor 11 also includes the first lenticule and the second lenticule. 3rd laser 43 reaches blood vessel 101 through the first lenticule, and the 4th laser 53 reaches light guiding input unit through the second lenticule Part 50.It is preferred that the first lenticule and light guiding output block 40 are integrally formed.First lenticule can be by wafer growth Technique productions, the first lenticule are arranged on the outfan of waveguide array 41.

It should be understood that the first lenticule and the second lenticule can also realize light beam using discrete optical lenses Focussing force.

Fig. 6 A show an output channel and the first lenticular perspective of light guiding output block of the present utility model Figure.Fig. 6 B are the side structure schematic diagrams of Fig. 6 A.With an output channel of the outfan of light guiding output block 40 and one Illustrate as a example by first lenticule 48.With reference to Fig. 6 B, left side is an output of the outfan of light guiding output block 40 Path, right side are the first lenticulees 48.Output channel (basic waveguiding structure) is including substrate 61, covering 62 and core waveguide 66. Covering 62 is grown in substrate 61 by high-temperature oxidation process, and core waveguide 66 runs through the output channel and the first lenticule 48. First lenticule 48 is layer structure, has the silicon oxynitride of different refractivity comprising the multilamellar being arranged on around core waveguide 66 Layer 69-1,69-2,69-3.Each layer silicon oxynitride layer 69-1,69-2,69-3 is grown on next layer by deposition process.It is true On, the silicon oxynitride layer of two-layer or three layers can be set below core waveguide 66, it is also possible to below core waveguide 66 The silicon oxynitride layer of two-layer or three layers is set, and each layer passes through process reform into the silicon oxynitride layer with different refractivity. From core waveguide 66 more away from silicon oxynitride layer refractive index it is lower.Example is embodied as with multichannel optical waveguide array, laser beam from The left side of core waveguide 66 enters, and what is given off by the first lenticule 48 is all identical elliptic conic shape light beam, and these are ellipse Conical shaped beam shooting angle is consistent.Guide defeated as the phase place of each light beam of the 3rd laser 43 is controlled by its corresponding light Go out the phase controlling of part 40, when these light beams are superimposed in far field, according to different controlled phases, far field beams can be in difference Locus form controllable constructive or destructive interferences, that is to say, that the controllable convergence and scanning of laser beam can be realized. In actual applications, these controllable focus on light beam can be set the precalculated position corresponding with blood vessel 101.

The structure and operation principle of the second lenticule 52 is identical with the first lenticule 48.Swash from the 4th of the reflection of blood vessel 101 the Light 53 reaches light guiding input block 50 through the second lenticule.

On the other hand, using the sharpest edges of near-infrared laser emitter 20 be laser have high luminous efficiency and Luminous intensity, and the light beam of near infrared laser has good directivity, effectively can focus on needs the blood vessel of monitoring Position.Simultaneously as the good live width quality of near infrared laser so that the light returned from vasoreflex with this L.Lucidus Turcz. of part Examine after light converges, realize relevant detection.

Fig. 7 shows the structural representation of the branch optical waveguide component of the pulse wave sensor of this utility model one embodiment Figure.As illustrated, branch optical waveguide component 70 includes a 2X2 photo-coupler 71.Photo-coupler 71 realizes 1 to 2 light splitting work( Energy.First laser 121 is split into second laser 124 and reference light 122.

Fig. 8 shows the structural representation of the receiving light path part of the pulse wave sensor of this utility model one embodiment Figure.Receiving light path part 80 includes double optical interferometers of a 2X4, and this pair of optical interferometer is combined by the bonder 71 of four 2X2 Form.Reference light 122 produces with two pair mutually long/cancellation outputs sixth through receiving light path part 80 with the 5th laser 125 Laser 123.

Fig. 9 shows the structural representation of the photo-detector of the pulse wave sensor of this utility model one embodiment.Light Detector 30 is made up of two independent balanced detectors 31,32, with balance type structure.Balanced detector 31,32 is visited respectively Two couple for surveying the 6th laser 123 mutually grows/cancellation output signal.

This utility model also describes a kind of wrist heart rate monitor.Figure 10 shows the one of wrist heart rate monitor of the present utility model The structural representation of individual embodiment.As illustrated, the watchband that the wrist heart rate monitor 100 is included table body 110 and is connected with table body 110 120, table body 110 includes aforesaid optical scanning formula heart rate monitor.Watchband 120 is suitable to the wrist of laminating user, further increases The detection accuracy of wrist heart rate monitor 100.Wrist heart rate monitor 100 measures the heart rate of human body by optical scanning formula heart rate monitor.

Figure 11 shows the structural representation of one embodiment of wrist heart rate monitor table body of the present utility model.As schemed Show, table body 110 also includes (built-in) message processing module 112, display module 114 and wireless transport module 116.Information processing mould Block 112 is electrically connected optical scanning formula heart rate monitor 118, display module 114 and wireless transport module 116.Message processing module 112 obtain heartbeat signal (pulse wave frequency) from optical scanning formula heart rate monitor 118 and change deliberately acquired heartbeat signal Jumping figure.Message processing module 112 can show beats by display module 114.Message processing module 112 will can also be obtained The heartbeat signal for obtaining or the beats obtained after conversion are wirelessly transmitted to ancillary equipment by wireless transport module 116, such as electricity On the intelligent artifacts such as brain, mobile phone or iPAD, off-line analysiss, display processing and long-range monitoring are carried out in order to ancillary equipment.

It should be understood that table body 110 can be with built-in timing module, three axle Gravity accelerometers, GPS location/lead Model plane block or physiologic information monitoring modular.These modules are coordinated so that wrist with the heart rate sensor of optical scanning formula heart rate monitor 118 Formula heart rate monitor 100 remembers the characteristics of step, alarm clock, multi-functional detection such as positioning/navigation with recording various physiological parameters, such as.

A kind of heart rate sensor and wrist heart rate monitor that this utility model is provided employs coherence detection, is greatly improved The signal to noise ratio of receiving terminal.Meanwhile, the mode for employing optical waveguide array or optical waveguide switch with reference to phase controlling is poly- to change The directivity of burnt laser beam to improve the utilization rate of laser energy, so as to reduce the requirement to near-infrared laser transmitter power And the overall power consumption of system is reduced accordingly.So that wrist heart rate monitor has small volume, easy to carry, low in energy consumption, stand-by time Long the features such as, can real-time detection analysis human heart rate and the rhythm of the heart function, user can not affect work, study and transport On the premise of dynamic, the health status of itself are conveniently and efficiently understood；In real time, accurately, uninterruptedly can also record at the volley Heart rate, realizes safe and effective body-building purpose.Testing result can be wirelessly transmitted to mobile phone by the radio transmitting device which has And store, shown with mobile phone app, can also upload onto the server, analyze for big data and process, and assist long-range curing Treat.

Those skilled in the art can be obvious, can carry out various modifications and change to above-mentioned example embodiment of the present utility model Type is without departing from spirit and scope of the present utility model.Accordingly, it is intended to make this utility model cover in appended claims And its in the range of equivalent arrangements to modification of the present utility model and modification.

Claims (10)

1. a kind of optical scanning formula heart rate monitor, it is characterised in that including heart rate sensor, the heart rate sensor includes：

Near-infrared laser emitter, launches first laser；

Branch optical waveguide component, receives the first laser and branch is second laser and reference light；

Light guides output block, receives and adjusts the second laser to form the 3rd laser, the 3rd laser is entered Blood vessel is mapped to, the light guiding output block includes the 1 multichannel optical waveguide array for arriving M or 1 to N optical waveguide switches；

Light guides input block, receives and adjusts from the 4th laser of the vasoreflex to form the 5th laser, and the light draws Leading input block includes the 1 multichannel optical waveguide array for arriving M or 1 to N optical waveguide switches；

Receiving light path part, including double optical interferometers, receive the 5th laser and the reference light and are formed Jing after two-way interference 6th laser；

Wherein M, N are integer and are more than 1.

2. a kind of optical scanning formula heart rate monitor as claimed in claim 1, it is characterised in that described 1 to M multichannel fiber waveguide battle array Row include multistage 1 to 2 light splitting optical path unit, and it is described to change that phase controlling part is provided with the transmission light path on all M roads The phase place of light beam in transmission light path；Described 1 to N optical waveguide switch includes multistage 1 to 2 optical waveguide switch unit, in each institute The double transmission light paths stated in optical waveguide switch unit are provided with the phase controlling part.

3. a kind of optical scanning formula heart rate monitor as claimed in claim 2, it is characterised in that the phase controlling part includes setting The metallic film in the transmission light path is put, the phase controlling part is by the heating that is powered to the metallic film to adjust The refractive index of the material of the transmission light path.

4. a kind of optical scanning formula heart rate monitor as claimed in claim 2, it is characterised in that the phase controlling part includes liquid Crystal layer and bipolar electrode, the liquid crystal layer are arranged in the transmission light path, and the bipolar electrode is arranged on the liquid crystal layer, described Phase controlling part adjusts the refractive index of the liquid crystal layer by the voltage of the change bipolar electrode.

5. a kind of optical scanning formula heart rate monitor as claimed in claim 2, it is characterised in that the phase controlling part includes gathering Compound layer and bipolar electrode, the polymeric layer are arranged in the transmission light path, and the bipolar electrode is arranged on the polymeric layer On, the phase controlling part adjusts the refractive index of the polymeric layer by the voltage of the change bipolar electrode.

6. a kind of optical scanning formula heart rate monitor as claimed in claim 1, it is characterised in that also including the first lenticule and second Lenticule, the 3rd laser reach the blood vessel through first lenticule；4th laser is micro- through described second Lens reach the light and guide input block.

7. a kind of optical scanning formula heart rate monitor as claimed in claim 6, it is characterised in that first lenticule and second micro- Lens are layer structure, have the silicon oxynitride layer of different refractivity comprising multilamellar.

8. a kind of optical scanning formula heart rate monitor as claimed in claim 6, it is characterised in that first lenticule and the light Guiding output block is integrally formed, and second lenticule and light guiding input block are integrally formed.

9. a kind of wrist heart rate monitor, it is characterised in that the watchband being connected including table body and with the table body, the table body include as The arbitrary described optical scanning formula heart rate monitor of claim 1 to 8.

10. a kind of wrist heart rate monitor as claimed in claim 9, it is characterised in that the table body also include message processing module, Display module and wireless transport module, described information processing module are electrically connected the optical scanning formula heart rate monitor, described aobvious Show module and the wireless transport module.