CN203169160U - Pulse-beat blood pressure wave strength sensor - Google Patents
Pulse-beat blood pressure wave strength sensor Download PDFInfo
- Publication number
- CN203169160U CN203169160U CN 201320188087 CN201320188087U CN203169160U CN 203169160 U CN203169160 U CN 203169160U CN 201320188087 CN201320188087 CN 201320188087 CN 201320188087 U CN201320188087 U CN 201320188087U CN 203169160 U CN203169160 U CN 203169160U
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- Prior art keywords
- blood pressure
- resistance
- elastomers
- beat pulse
- pressure intensity
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Abstract
The utility model discloses a pulse-beat blood pressure wave strength sensor. The pulse-beat blood pressure wave strength sensor comprises a casing, a contact probe, a circuit board, a lead wire and a four-beam elastic body, wherein the four-beam elastic body is connected with the contact probe, and a strain foil is arranged on a spare beam arm of the four-beam elastic body. The pulse-beat blood pressure wave strength sensor is a force sensor which is high in sensitivity and accuracy and can eliminate errors when a force application position point and a force application angle deviate and accurately measure the pulse-beat blood pressure wave strength.
Description
Technical field
This utility model relates to a kind of pressure transducer, is specifically related to a kind of beat pulse blood pressure intensity of wave sensor.
Background technology
As everyone knows, the usefulness piezoelectric membrane principle that existing pulse test sensor has, the beat pulse number of times can only be tested; What have uses ceramic piezoresistive principles, can measure beat pulse number of times and blood pressure wave mode.And take a broad view of all relevant similar utility model products at present, and adopt the single-sensor head to measure the sensor of beat pulse blood pressure ripple, all can't eliminate because the error that test angle and test position deviation produce.And pulse transducer is a kind of precision instrument, and the pulse pressure signal accuracy of measurement requires very high, tiny deviation also can sentence read result cause bad influence.Therefore, existing product in use can be easily because the load(ing) point of power and load angular deviation and produce very big error, thereby truly have necessity of new product designs.
The utility model content
Technical problem to be solved in the utility model provides a kind of beat pulse blood pressure intensity of wave sensor, and it can eliminate error when force application location is put deviation and application of force angular deviation, measure the force transducer of beat pulse blood pressure intensity of wave accurately.
In order to solve above technical problem, this utility model provides a kind of beat pulse blood pressure intensity of wave sensor, comprise shell, contact probe head, circuit board and lead-in wire, also comprise four beam elastomers, described four beam elastomers are connected with described contact probe head, and elastomeric each beam arm of described four beams is provided with foil gauge.
Preferably, beat pulse blood pressure intensity of wave sensor of the present utility model, elastomeric each beam arm of described four beams is symmetrical structure.
Further, beat pulse blood pressure intensity of wave sensor of the present utility model, described foil gauge are two resistance silicon foil gauges.
A nearlyer step ground, beat pulse blood pressure intensity of wave sensor of the present utility model, described four beam elastomers are connected with a resistance connecting plate, and described circuit connecting plate is connected with the amplifier plate with a temperature-compensating, and described temperature-compensating is connected with described lead-in wire with the amplifier plate.
A nearlyer step ground, beat pulse blood pressure intensity of wave sensor of the present utility model, on described resistance connecting plate, a half-bridge of the synthetic Wheatstone bridge of resistor group on the described four beam elastomers on two beam arms of 180 degree symmetries.
When its contact probe head of beat pulse blood pressure intensity of wave sensor of the present utility model is subjected to beat pulse blood pressure wave power, power is transmitted to four beam elastomers, make four beam elastomer stress deformations produce displacement, strain resistor resistance linear change can linear test arrive beat pulse blood pressure intensity of wave.Each beam stress can both produce linear elasticity deformation, deformation drives and sticks on top silicon strain resistor resistance value linear change, utilize 180 the degree angles two spring beams on four resistance, the resistance of per two symmetries is formed a brachium pontis, four resistance are formed half-bridge, in the time of the applying the position applying angle and deflecting of skew or power taken place of power, the direction that the close point of application or application of force angle are little is stressed big, the resistance variations of 180 degree symmetries is little, the resistance of two symmetries is formed a brachium pontis complementation, can be more the accurately variation of ergometry, reduce because the direction that applies the force deviation or apply power changes the error that causes.
Description of drawings
Below in conjunction with the drawings and specific embodiments this utility model is described in further detail.
Fig. 1 is the schematic perspective view of sensor of the present utility model;
Fig. 2 is three sketch maps of the sensor of an embodiment of this utility model;
Fig. 3 is the exploded perspective sketch map of the sensor of an embodiment of this utility model;
Fig. 4 is the elastomeric beam arm sketch map of four beams of the sensor of an embodiment of this utility model;
Fig. 5 is the sketch map of two resistance strain gages on the legend four beam elastomer beam arms shown in Figure 4;
Fig. 6 is the resistance circuit connection diagram of legend shown in Figure 5.
The specific embodiment
Beat pulse blood pressure intensity of wave sensor of the present utility model, comprise shell, contact probe head, circuit board and lead-in wire, also comprise four beam elastomers, described four beam elastomers are connected with described contact probe head, and elastomeric each beam arm of described four beams is provided with foil gauge.Elastomeric each arm of described four beams is preferably symmetrical structure, and described foil gauge is two resistance silicon foil gauges.Described four beam elastomers are connected with a resistance connecting plate, and described circuit connecting plate is connected with the amplifier plate with a temperature-compensating, and described temperature-compensating is connected with described lead-in wire with the amplifier plate.On described resistance connecting plate, the synthetic Wheatstone bridge of the resistor group on the described four beam elastomers on two beam arms of 180 degree symmetries.
Embodiment one
The beat pulse blood pressure intensity of wave sensor of an embodiment of the present utility model comprises: shell, contact probe head, four beam elastomer, four two resistance silicon foil gauges, plugboard, temperature-compensating and amplifier plate add output lead and form; Wherein, shell plays outside invasion and attack protection to four beam elastomers and other components and parts; Four pairs of two resistance silicon foil gauges are pasted on the four beam elastomers, and four beam elastomers produce displacement when probe is stressed, and the pulling foil gauge makes the resistance linear change; The brachium pontis electric bridge of four pairs of two per two complementations of resistance silicon foil gauge is exported after the stressed deviation complementation.Be connected combination with circuit by this special structural design, make output can eliminate power load(ing) point and power loading angular deviation, plugboard is connected to the temperature-compensation circuit plate with four pairs of two resistance silicon strains and amplifies plate, and output was by lead-in wire output after compensation was amplified.Therefore, when probe was subjected to beat pulse blood pressure wave power, complementary output can reduce to greatest extent because power load(ing) point and angular deviation improve the precision that detects.
As Fig. 1 to the structural representation that Figure 5 shows that above-described embodiment, beat pulse blood pressure intensity of wave sensor comprises: a contact probe head 10, shell 21,22 and 23 cooperates the four beam elastomers 30 of mount of coming together, four pairs of two resistance silicon foil gauges 41～42,43～44,45～46,47～48 stick on four crossbeams 301～304 of four beam elastomers 30, and resistance connecting plate 50, temperature-compensating and amplifier plate 60 and output lead 100 are formed.
Four beam elastomers 30, four beams 301～304 when stressed increase generation linear deformation with the linearity of putting forth effort, make two resistance silicon foil gauges 41～42 of the correspondence that sticks on the beam, 43～44,45～46,47～48 types become, thereby the variation relevant with the line of force takes place in each resistance of two resistance silicon foil gauges, utilize two beams 301 and 303 of 180 degree, brachium pontis 41 of the synthetic Wheatstone bridge of two resistor group of the symmetry on 302 and 304 and 47 brachium pontis, 42 and 48 brachium pontis, 43 and 45 brachium pontis, 44 and 46 brachium pontis, be illustrated in figure 6 as the circuit diagram of above-mentioned Wheatstone bridge, when the angle that applies of the generation skew of the position that applies of power or power deflects, the resistance that the close point of application or application of force angle are little is stressed big, the variation that produces is big, and the variation that the resistance of 180 degree symmetries produces under identical state is little.Original resistance as two resistance equates, owing to apply the power change in location and apply that resistance that the power angular deviation produces becomes big and the difference in change out-phase that diminishes etc., when two resistance of symmetry are formed same brachium pontis, the variation difference-complementary of a brachium pontis of the Wheatstone bridge formed of two resistance then, when the power that ought apply has position and angular deviation like this, the Hui Sitong full-bridge circuit that special circuit is formed and the design of four beam elastomer structures can better reduce because the angle that applies the power position or apply power changes the error that causes, thereby better improve the precision of sensor.
When contact probe head of the present utility model was subjected to beat pulse blood pressure wave power, power was transmitted to four beam elastomers, made four beam elastomer stress deformations produce displacement, and strain resistor resistance linear change can linear test arrive beat pulse blood pressure intensity of wave.When four beam elastomers are stressed, each beam stress can both produce linear elasticity deformation, deformation drives and sticks on top silicon strain resistor resistance linear change, utilize 180 the degree angles two spring beams on four resistance, the resistance of per two symmetries is formed a brachium pontis, four resistance are formed half-bridge, in the time of the applying the position applying angle and deflecting of skew or power taken place of power, the direction that the close point of application or application of force angle are little is stressed big, the resistance variations of 180 degree symmetries is little, the resistance of two symmetries is formed a brachium pontis complementation, and the more accurately variation of ergometry reduces because the direction that applies the force deviation or apply power changes the error that causes.
Claims (5)
1. beat pulse blood pressure intensity of wave sensor, comprise shell, contact probe head, circuit board and lead-in wire, it is characterized in that, also comprise four beam elastomers, described four beam elastomers are connected with described contact probe head, and elastomeric each beam arm of described four beams is provided with foil gauge.
2. beat pulse blood pressure intensity of wave sensor as claimed in claim 1 is characterized in that, elastomeric each beam arm of described four beams is symmetrical structure.
3. beat pulse blood pressure intensity of wave sensor as claimed in claim 2 is characterized in that, described foil gauge is two resistance silicon foil gauges.
4. beat pulse blood pressure intensity of wave sensor as claimed in claim 4, it is characterized in that, described four beam elastomers are connected with a resistance connecting plate, and described circuit connecting plate is connected with the amplifier plate with a temperature-compensating, and described temperature-compensating is connected with described lead-in wire with the amplifier plate.
5. beat pulse blood pressure intensity of wave sensor as claimed in claim 3 is characterized in that, on described resistance connecting plate, and a half-bridge of the synthetic Wheatstone bridge of resistor group on the described four beam elastomers on two beam arms of 180 degree symmetries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320188087 CN203169160U (en) | 2013-04-02 | 2013-04-02 | Pulse-beat blood pressure wave strength sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320188087 CN203169160U (en) | 2013-04-02 | 2013-04-02 | Pulse-beat blood pressure wave strength sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203169160U true CN203169160U (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320188087 Expired - Lifetime CN203169160U (en) | 2013-04-02 | 2013-04-02 | Pulse-beat blood pressure wave strength sensor |
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| Country | Link |
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| CN (1) | CN203169160U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103222859A (en) * | 2013-04-02 | 2013-07-31 | 上海道生医疗科技有限公司 | Pulse beat blood pressure waveform strength sensor |
| CN105310669A (en) * | 2014-06-16 | 2016-02-10 | 北京敏易联传感技术有限公司 | MEMS contact-type force sensor applied to sphygmomanometer and manufacturing method thereof |
| CN111839461A (en) * | 2020-07-27 | 2020-10-30 | 歌尔科技有限公司 | Sensor and intelligent wearable equipment |
-
2013
- 2013-04-02 CN CN 201320188087 patent/CN203169160U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103222859A (en) * | 2013-04-02 | 2013-07-31 | 上海道生医疗科技有限公司 | Pulse beat blood pressure waveform strength sensor |
| CN105310669A (en) * | 2014-06-16 | 2016-02-10 | 北京敏易联传感技术有限公司 | MEMS contact-type force sensor applied to sphygmomanometer and manufacturing method thereof |
| CN111839461A (en) * | 2020-07-27 | 2020-10-30 | 歌尔科技有限公司 | Sensor and intelligent wearable equipment |
| CN111839461B (en) * | 2020-07-27 | 2022-11-22 | 歌尔科技有限公司 | Sensor and intelligent wearable equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130904 |