CN103462595A - Portable sensor assembly - Google Patents

Abstract

The invention discloses a portable sensor assembly, which belongs to the technical field of a pulse sensor. The portable sensor assembly has the main technical scheme that the portable sensor assembly comprises a casing made of metal, a pulse sensing mechanism is arranged in the casing, and consists of a PCB (printed circuit board), a piezoelectric film and a pulse contact, the piezoelectric film is arranged on the PCB, the pulse contact is tightly pasted on the outer side of the piezoelectric film, a piezoelectric film vibration stroke work cavity corresponding to the piezoelectric film is arranged on the PCB, a positive electrode and a negative electrode of the PCB are mutually connected with a positive electrode and a negative electrode of the piezoelectric film, the PCB is connected with an external data collecting instrument through a circuit, a contact extending-out hole adapting to the pulse contact is formed in the casing, and the pulse contact is in contact with the human body. The invention aims at providing the portable sensor assembly with the advantages that the structure is reasonable, the size is small, and the carrying is convenient. The portable sensor assembly is used for detecting the pulse of the human body.

Description

A kind of portable sensor assembly

Technical field

The present invention relates to a kind of pulse transducer, more particularly, relate in particular to a kind of portable sensor assembly.

Background technology

Pulse wave is one of important parameter of cardiovascular system of human body.When the periodic contraction of heart and diastole, ventricle is injected aortal blood flow and will be set out and propagate along the tremulous pulse piping with the autonomous initiatively root of the form of ripple, and this ripple is exactly pulse wave.Pulse wave transmits in the tremulous pulse piping, and constantly reflection in the branches at different levels of downstream diverse location, make pulse wave not only will be subject to the impact of heart itself, also can be subject to various physiological and pathological factors flowing through in tremulous pulsies at different levels and branch as the impact of vascular resistance, vessel wall elasticity and blood stickiness etc., thereby the reflection wave strength reflected from the downstream peripheral arterial and waveform will have very big-difference with different physiological and pathological factors vary simultaneously.Therefore extract the foundation of the physiological and pathological information of human body as clinical diagnosis and treatment from pulse wave, always be subject to the attention of China and foreign countries' medical circle.

In prior art, the device that uses piezoelectric to make, be converted to Voltage-output to the conversion of electric energy by pulse wave by mechanical energy, is modal pulse wave measurement method, and measuring the arterial pressure change with piezoelectric transducer is known technology.Its implementation, for by the piezoelectric transducer unit is placed on the human body artery surface, brings tension variation to measure endovascular pressure state by experiencing tremulous pulse.Artery diameter is generally 1.2mm-2.4mm, and the pressure variation caused in order to be checked through accurately tremulous pulse need to cover sensor the top of tremulous pulse as far as possible.

In traditional pulse wave detects, disturbing with comfort level is usually a subject matter.Carry out continuous monitoring for meeting in the life occasion, power consumption is also a subject matter.

The pulse wave sensor detected based on mechanical energy traditionally requires the detected person to take particular pose, and takes the mode of pressing, and to overcome interfering signal, meeting blood stream pressure can be conducted and identify clearly.

In addition, along with the development of technology, wearable technology enters people's the visual field, and the science and technology of the equipment of the clothes that can directly be through with it or be integrated into the user or accessory is mainly explored and created to wearable technology.Realize fast data acquisition, by ultrafast sharing contents ability, keep efficiently social contact by " inherent connective ".Break away from traditional handheld device and obtain seamless access to netwoks experience.And this is applied to medical domain, the combined type portable sensor, for every data of human body quickly and easily, will be an important trend of future development.

Summary of the invention

The object of the invention is to for above-mentioned the deficiencies in the prior art, a kind of rational in infrastructure, portable sensor assembly that volume is little and easy to carry is provided.

Technical scheme of the present invention is achieved in that a kind of portable sensor assembly, comprise metal housing, be provided with the pulse sensing mechanism in wherein said housing, described pulse sensing mechanism by pcb board, be arranged on the piezoelectric membrane on pcb board and be adjacent to the pulse contact that is arranged on the piezoelectric membrane outside and form; Described pcb board is provided with the piezoelectric membrane vibrations stroke working chamber corresponding with piezoelectric membrane, and the both positive and negative polarity of described pcb board and the both positive and negative polarity of piezoelectric membrane interconnect, and described pcb board is connected with external data collection instrument circuit; Described housing is provided with the contact adapted with the pulse contact and stretches out hole, and described pulse contact contacts with human body.

In above-mentioned a kind of portable sensor assembly, described piezoelectric membrane is tightened and is covered on pcb board.

In above-mentioned a kind of portable sensor assembly, described pcb board wherein one side is anodal, and another side is negative pole; Described piezoelectric membrane is comprised of pvdf membrane and the anodal coating and the negative pole coating that are arranged on the pvdf membrane both sides, and described anodal coating is positioned on the pvdf membrane that the outline ofpcb board 2 positive poles is corresponding, and described negative pole coating covers on the another side of pvdf membrane; Described anodal coating contacts with the positive pole-face laminating of pcb board, and described negative pole coating is connected with the negative pole face of pcb board after bending by edge; Described negative pole coating contacts with housing.

In above-mentioned a kind of portable sensor assembly, a described pcb board wherein side is extended with the electrode connection-peg be connected with the external data collection instrument, and the positive pole of described pcb board all is connected with the electrode connection-peg with negative pole; Be provided with the connection-peg adapted with the electrode connection-peg and stretch out hole on housing.

In above-mentioned a kind of portable sensor assembly, described pulse contact is comprised of silica gel solid fixed platform and the silica gel contact be arranged on the silica gel solid fixed platform, and described pulse contact is folded between housing and pulse sensing mechanism.

In above-mentioned a kind of portable sensor assembly, it is 1～2.4mm that described silica gel contact is positioned at the height that hull outside divides.

In above-mentioned a kind of portable sensor assembly, described silica gel contact and the contacted end of human body are arcuate structure.

In above-mentioned a kind of portable sensor assembly, described housing is comprised of the upper casing cooperatively interacted and lower casing, and described pulse sensing mechanism, upper casing and lower casing are screwed and connect into integral body; Described connection-peg stretches out hole and is arranged on lower casing; Described contact stretches out hole and is arranged on upper casing.

After the present invention adopts said structure, by piezoelectric membrane, with the ingenious of pcb board, coordinate, make the present invention with respect to prior art, have advantages of following:

(1) the arc contact jaw of silica gel contact, can receive the pulse vibration signal well, and utilize the silica gel pulse vibrations transfer surface of silica gel solid fixed platform bottom, the pulse vibration signal is delivered on piezoelectric membrane fully, thus the sensitivity that has improved sensor.

(2) by the structure of piezoelectric membrane packing pcb board, piezoelectric membrane is tightened on pcb board, to reach the high sensitivity effect, then fixes by the hole that is mounted with at four angles, to reach stable high sensitivity and the long life.

(3) dexterously the piezoelectric membrane signal of telecommunication is drawn by the electrode connection-peg, make the signal output connector of this sensor versatile and flexible, can weld, can peg graft.

(4) the folding packing of the negative pole coating edge of piezoelectric membrane is on pcb board negative pole face, and the turned up portion of the negative pole coating of piezoelectric membrane contacts with metal shell under the extruding of soft pulse contact, by the conduction formation ground connection of metal shell and skin; Simultaneously, can draw negative pole on the anodal side of pcb board again, the interference of outer signals to piezoelectric membrane that utilized metal shell to shield well.

(5) piezoelectric membrane on pcb board vibrations stroke working chamber, when having solved well piezoelectric membrane and carrying out the pulse shock detection, needed piston type vibrations space, greatly improve this transducer sensitivity.

(6) pcb board coordinates with the ingenious of piezoelectric membrane, realizes the microminiaturization of sensor, and thickness can reach 2 millimeters, can be arranged on easily user's clothes and reach on the equipment and article of wearing with oneself, realizes obtaining quickly and easily the human pulse data.

The accompanying drawing explanation

Below in conjunction with the embodiment in accompanying drawing, the present invention is described in further detail, but do not form any limitation of the invention.

Fig. 1 is decomposition texture schematic diagram of the present invention;

Fig. 2 is the structural representation of piezoelectric membrane of the present invention and pcb board.

In figure: housing 1, contact stretch out hole 1a, connection-peg stretches outhole 1b,upper casing 1c,lower casing 1d,pcb board 2, piezoelectric membrane vibrationsstroke working chamber 2a, electrode connection-peg 2b, piezoelectric membrane 3,pvdf membrane 3a,anodal coating 3b,negative pole coating 3c, pulse contact 4, silica gel solidfixed platform 4a,silica gel contact 4b.

The specific embodiment

Consult shown in Fig. 1, a kind of portable sensor assembly of the present invention, comprise metal housing 1, be provided with the pulse sensing mechanism in housing 1, described pulse sensing mechanism bypcb board 2, be arranged on the piezoelectric membrane 3 onpcb board 2 and be adjacent to the pulse contact 4 that is arranged on piezoelectric membrane 3 outsides and form; Described piezoelectric membrane 3 is preferably to tighten and covers onpcb board 2, can significantly improve like this sensitivity of detection.Describedpcb board 2 is provided with the piezoelectric membrane vibrationsstroke working chamber 2a corresponding with piezoelectric membrane 3, and the implant in piezoelectric membrane vibrationsstroke working chamber 2a can be air, can be also vacuum structure; The both positive and negative polarity of the both positive and negative polarity of describedpcb board 2 and piezoelectric membrane 3 interconnects, and describedpcb board 2 is connected with external data collection instrument circuit, this structure, and piezoelectric membrane 3 is connected with outside bypcb board 2, can significantly dwindle the volume of sensor; Described housing 1 is provided with the contact adapted with pulse contact 4 and stretches out hole 1a, and described pulse contact 4 contacts with human body.

Preferably, consult shown in Fig. 2, in the present embodiment, describedpcb board 2 wherein one side is anodal, and another side is negative pole; Described piezoelectric membrane 3 is comprised ofpvdf membrane 3a and theanodal coating 3b and thenegative pole coating 3c that are arranged onpvdf membrane 3a both sides,pvdf membrane 3a corresponding to outline that describedanodal coating 3b is positioned atpcb board 2 positive poles goes up, and describednegative pole coating 3c covers on the another side ofpvdf membrane 3a; Describedanodal coating 3b contacts with the positive pole-face laminating ofpcb board 2, and describednegative pole coating 3c is connected with the negative pole face ofpcb board 2 after bending by edge; Describednegative pole coating 3c contacts with housing 1.Particularly, the part ofparcel pcb board 2, piezoelectric membrane 3 is wrapped in the positive pole-face ofpcb board 2 part in addition only the negative pole coating, and the back side of negative pole coating is uncoated insulation material.And describedpcb board 2 a wherein side is extended with the electrode connection-peg 2b be connected with the external data collection instrument, the positive pole of describedpcb board 2 all is connected with electrode connection-peg 2b with negative pole; Be provided with the connection-peg adapted with electrode connection-peg 2b and stretch outhole 1b on housing 1.Above-mentioned structure, the structure of piezoelectric membrane 3packing pcb boards 2, be tightened onpcb board 2 piezoelectric membrane 3, can reach the high sensitivity effect; , dexterously the signal of telecommunication of piezoelectric membrane 3 is drawn by electrode connection-peg 2b simultaneously, make the signal output connector of this sensor versatile and flexible, can weld, can peg graft.And the negative pole bread folding of piezoelectric membrane 3 is onpcb board 2 negative pole faces, the turned up portion of thenegative pole coating 3c of piezoelectric membrane 3 contacts with metal shell under the extruding of soft pulse contact 4, by the conduction formation ground connection of metal shell and skin; Simultaneously, can draw negative pole on the anodal side ofpcb board 2 again, the interference of outer signals to piezoelectric membrane that utilized metal shell to shield well.

Simultaneously, the pulse contact 4 described in the present embodiment is comprised of silica gel solid fixedplatform 4a and thesilica gel contact 4b be arranged on silica gel solid fixedplatform 4a, and described pulse contact 4 is folded between housing 1 and pulse sensing mechanism; And the height that describedsilica gel contact 4b is positioned at housing 1 outer part is 1～2.4mm.Describedsilica gel contact 4b and the contacted end of human body are arcuate structure, and the arcuate structure ofsilica gel contact 4b and suitable height are felt comfortable while not only making human body contact withsilica gel contact 4b, and can be received well the pulse vibration signal.Simultaneously, flexiblesilica gel contact 4b is at the interior extruding housing of housing 1, make housing 1 form sealing, shielding noise interference, waterproof, dust protection, pushsilica gel contact 4b simultaneously and make the vibrations transfer surface of silica gel solidfixed platform 4a produce the nature projection along piezoelectric membrane vibrationsstroke working chamber 2a;

Further, in order to make installation and easy to maintenance, housing 1 is comprised of theupper casing 1c cooperatively interacted andlower casing 1d, and described pulse sensing mechanism,upper casing 1c andlower casing 1d are screwed and connect into integral body; Described connection-peg stretches outhole 1b and is arranged onlower casing 1d; Described contact stretches out hole 1a and is arranged on upper casing 1c.Simultaneously, be equipped with the locating hole corresponding with screw atpcb board 2, piezoelectric membrane 3 and silica gel solidfixed platform 4a, whole sensor is fixed connection by screw, thenegative pole coating 3c of piezoelectric membrane 3 is contacted better with housing 1, reach stable high sensitivity and than the purpose of long life simultaneously.

During use, sensor cluster of the present invention is fixed on the corresponding position of human body by external fixation device, the position of adjustingsilica gel contact 4b, connect the external data collection instrument, can carry out the collection of data.

Above illustrated embodiment is better embodiment of the present invention, only be used for facilitating explanation the present invention, not the present invention is done to any pro forma restriction, have and usually know the knowledgeable in technical field under any, if in the scope that does not break away from technical characterictic that the present invention carries, utilize disclosed technology contents to do the local equivalent embodiment that changes or modify, and do not break away from technical characterictic content of the present invention, all still belong in the scope of the technology of the present invention feature.

Claims (8)

1. a portable sensor assembly, comprise metal housing (1), it is characterized in that, described housing is provided with the pulse sensing mechanism in (1), described pulse sensing mechanism by pcb board (2), be arranged on the piezoelectric membrane (3) on pcb board (2) and be adjacent to the pulse contact (4) that is arranged on piezoelectric membrane (3) outside and form; Described pcb board (2) is provided with the piezoelectric membrane vibrations stroke working chamber (2a) corresponding with piezoelectric membrane (3), the both positive and negative polarity of the both positive and negative polarity of described pcb board (2) and piezoelectric membrane (3) interconnects, and described pcb board (2) is connected with external data collection instrument circuit; Described housing (1) is provided with the contact adapted with pulse contact (4) and stretches out hole (1a), and described pulse contact (4) contacts with human body.

2. a kind of portable sensor assembly according to claim 1, is characterized in that, described piezoelectric membrane (3) is tightened and covered on pcb board (2).

3. a kind of portable sensor assembly according to claim 1, is characterized in that, described pcb board (2) wherein one side is anodal, and another side is negative pole; Described piezoelectric membrane (3) is comprised of pvdf membrane (3a) and the anodal coating (3b) and the negative pole coating (3c) that are arranged on pvdf membrane (3a) both sides, described anodal coating (3b) is positioned at the pvdf membrane (3a) corresponding to outline of pcb board 2 positive poles and goes up, and described negative pole coating (3c) covers on the another side of pvdf membrane (3a); Described anodal coating (3b) contacts with the positive pole-face laminating of pcb board (2), and described negative pole coating (3c) is connected with the negative pole face of pcb board (2) after bending by edge; Described negative pole coating (3c) contacts with housing (1).

4. a kind of portable sensor assembly according to claim 3, it is characterized in that, described pcb board (a 2) wherein side is extended with the electrode connection-peg (2b) be connected with the external data collection instrument, and the positive pole of described pcb board (2) all is connected with electrode connection-peg (2b) with negative pole; Be provided with the connection-peg adapted with electrode connection-peg (2b) and stretch out hole (1b) on housing (1).

5. a kind of portable sensor assembly according to claim 1, it is characterized in that, described pulse contact (4) is comprised of silica gel solid fixed platform (4a) and the silica gel contact (4b) that is arranged on silica gel solid fixed platform (4a), and described pulse contact (4) is folded between housing (1) and pulse sensing mechanism.

6. a kind of portable sensor assembly according to claim 5, is characterized in that, the height that described silica gel contact (4b) is positioned at the outer part of housing (1) is 1～2.4mm.

7. according to the described a kind of portable sensor assembly of claim 5 or 6, it is characterized in that, described silica gel contact (4b) is arcuate structure with the contacted end of human body.

8. a kind of portable sensor assembly according to claim 4, it is characterized in that, described housing (1) is comprised of the upper casing cooperatively interacted (1c) and lower casing (1d), and described pulse sensing mechanism, upper casing (1c) and lower casing (1d) are screwed and connect into integral body; Described connection-peg stretches out hole (1b) and is arranged on lower casing (1d); Described contact stretches out hole (1a) and is arranged on upper casing (1c).

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