CN203554400U - Filter shaping circuit for heart rate collection - Google Patents
Filter shaping circuit for heart rate collection Download PDFInfo
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- CN203554400U CN203554400U CN201320723947.6U CN201320723947U CN203554400U CN 203554400 U CN203554400 U CN 203554400U CN 201320723947 U CN201320723947 U CN 201320723947U CN 203554400 U CN203554400 U CN 203554400U
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- schmidt trigger
- resistance
- polar capacitor
- shaping circuit
- heart rate
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Abstract
Disclosed in the utility model is a filter shaping circuit for heart rate collection. The filter shaping circuit comprises a first resistor, a second resistor, a third resistor, and a fourth resistor, an amplifier, a first polar capacitor, a second polar capacitor, a first schmidt trigger, a second schmidt trigger, a third schmidt trigger, and a direct-current power supply; the first resistor, the second resistor, the polar capacitor, and the second polar capacitor form a filter circuit; the amplifier is used for signal amplification; the first schmidt trigger, the second schmidt trigger, and the third schmidt trigger are used for shaping irregular spike pulses into square-wave pulses; and the output signals can be directly counted by the post-stage single-chip microcomputer. According to the scheme, the voltage signal outputted by the heart rate collection sensor is filtered, amplified and shaped and the square-wave pulse signal that can be counted by the single-chip microcomputer directly can be outputted, thereby realizing accurate collection of the heart rate signal. And the provided filter shaping circuit with the advantages of simple structure and low cost can be applied to various heat rate collection devices like a heat rate collector, a sphygmomanometer, and a pulse rate counter and the like conveniently.
Description
Technical field
The utility model relates to a kind of filtering shaping circuit, relates in particular to a kind of filtering shaping circuit gathering for heart rate.
Background technology
Heart rate, as important vital sign, is comprising abundant human life information.It is now existing that compared with multi-product, after one's own heart rate collector, sphygmomanometer, pulse counting device can gather heartbeat signal, these products are used for carrying out the functions such as daily heart rate test, storage, warning, monitoring in real time, and the old and the weak crowds such as patient, old man, child that can be offer convenience.Existing heart rate gathers product, and its filter amplification circuit is comparatively complicated, and the pulse signal of output is comparatively sharp-pointed, is not suitable for single-chip microcomputer and directly counts.
Utility model content
The purpose of this utility model provides a kind of square-wave pulse of exporting to be convenient to the directly filtering shaping circuit gathering for heart rate of counting with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
Filtering shaping circuit for heart rate collection described in the utility model comprises the first resistance～four resistance, amplifier, the first polar capacitor, the second polar capacitor, the first Schmidt trigger～three Schmidt trigger and DC power supply, the first end of described the first resistance is the signal input part of described filtering shaping circuit, the second end of described the first resistance is connected with the positive pole of described the first polar capacitor with the first end of described the second resistance respectively, the second end of described the second resistance is connected with the positive pole of described the second polar capacitor and the positive signal input of described amplifier respectively, the negative signal input of described amplifier is connected with the first end of described the 4th resistance with the first end of described the 3rd resistance respectively, the second end of described the 4th resistance is connected with the negative pole of described the first polar capacitor, the output of described amplifier successively with described the first Schmidt trigger, described the second Schmidt trigger is connected with described the 3rd Schmidt trigger, the output of described the 3rd Schmidt trigger is the signal output part of described filtering shaping circuit, the cathode power supply input of described amplifier is connected with the positive pole of described DC power supply, the negative power supply input of described amplifier, the negative pole of described the second polar capacitor, the second end of described the 3rd resistance and the negative pole of described DC power supply interconnect.
Particularly, described the first Schmidt trigger～three Schmidt trigger is six reverse Schmidt triggers.
The beneficial effects of the utility model are:
The utility model is by carrying out filtering, amplification and shaping to the voltage signal of heart rate pick-up transducers output, the square-wave pulse signal that output can directly be counted by single-chip microcomputer, thereby realize the accurate collection of heart rate signal, be convenient to various hearts rate and gather the after one's own heart application of rate collector, sphygmomanometer, pulse counting device etc. of apparatus; This filtering shaping circuit is simple in structure, cost is low.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the filtering shaping circuit gathering for heart rate described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Filtering shaping circuit for heart rate collection described in the utility model comprises the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, amplifier A1, the first polar capacitor C1, the second polar capacitor C2, the first Schmidt trigger IC1, the second Schmidt trigger IC2, the 3rd Schmidt trigger IC3 and DC power supply Vcc, the first end of the first resistance R 1 is the signal input part of described filtering shaping circuit, the second end of the first resistance R 1 is connected with the positive pole of the first polar capacitor C1 with the first end of the second resistance R 2 respectively, the second end of the second resistance R 2 is connected with the positive pole of the second polar capacitor C2 and the positive signal input of amplifier A1 respectively, the negative signal input of amplifier A1 is connected with the first end of the 4th resistance R 4 with the first end of the 3rd resistance R 3 respectively, the second end of the 4th resistance R 4 is connected with the negative pole of the first polar capacitor C1, the output of amplifier A1 successively with the first Schmidt trigger IC1, the second Schmidt trigger IC2 is connected with the 3rd Schmidt trigger IC3, the output of the 3rd Schmidt trigger IC3 is the signal output part Uo of described filtering shaping circuit, the cathode power supply input of amplifier A1 is connected with the positive pole of DC power supply Vcc, the negative power supply input of amplifier A1, the negative pole of the second polar capacitor C2, the second end of the 3rd resistance R 3 and the negative pole of DC power supply Vcc interconnect, the first Schmidt trigger IC1, the second Schmidt trigger IC2, the 3rd Schmidt trigger IC3 are six reverse Schmidt trigger HCC40106.
As shown in Figure 1, during application, the first end of the first resistance R 1 is also connected with terminals JP1, it is signal end, cathode power supply end, negative electricity source that terminals JP1 has three terminals, the inner of three terminals is connected with the negative pole of DC power supply Vcc with first first end of resistance R 1, the positive pole of DC power supply Vcc respectively, the outer end of three terminals respectively with the corresponding connection of three terminals of heart rate pick-up transducers.Heart rate pick-up transducers does not illustrate in the drawings, general adopts pressure sensor.The first resistance R 1, the second resistance R 2, the first polar capacitor C1, the second polar capacitor C2 form filter circuit, amplifier A1 amplifies for signal, the first Schmidt trigger IC1, the second Schmidt trigger IC2, the 3rd Schmidt trigger IC3 are for being shaped as square-wave pulse by irregular spike, and the signal of output can directly be counted by the single-chip microcomputer (not shown) of rear class.
Claims (2)
1. the filtering shaping circuit gathering for heart rate, it is characterized in that: comprise the first resistance～four resistance, amplifier, the first polar capacitor, the second polar capacitor, the first Schmidt trigger～three Schmidt trigger and DC power supply, the first end of described the first resistance is the signal input part of described filtering shaping circuit, the second end of described the first resistance is connected with the positive pole of described the first polar capacitor with the first end of described the second resistance respectively, the second end of described the second resistance is connected with the positive pole of described the second polar capacitor and the positive signal input of described amplifier respectively, the negative signal input of described amplifier is connected with the first end of described the 4th resistance with the first end of described the 3rd resistance respectively, the second end of described the 4th resistance is connected with the negative pole of described the first polar capacitor, the output of described amplifier successively with described the first Schmidt trigger, described the second Schmidt trigger is connected with described the 3rd Schmidt trigger, the output of described the 3rd Schmidt trigger is the signal output part of described filtering shaping circuit, the cathode power supply input of described amplifier is connected with the positive pole of described DC power supply, the negative power supply input of described amplifier, the negative pole of described the second polar capacitor, the second end of described the 3rd resistance and the negative pole of described DC power supply interconnect.
2. the filtering shaping circuit gathering for heart rate according to claim 1, is characterized in that: described the first Schmidt trigger～three Schmidt trigger is six reverse Schmidt triggers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320723947.6U CN203554400U (en) | 2013-11-15 | 2013-11-15 | Filter shaping circuit for heart rate collection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320723947.6U CN203554400U (en) | 2013-11-15 | 2013-11-15 | Filter shaping circuit for heart rate collection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203554400U true CN203554400U (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320723947.6U Expired - Fee Related CN203554400U (en) | 2013-11-15 | 2013-11-15 | Filter shaping circuit for heart rate collection |
Country Status (1)
| Country | Link |
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| CN (1) | CN203554400U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075738A (en) * | 2014-07-28 | 2014-10-01 | 成都千嘉科技有限公司 | Flow collection system based on flow metering device |
| CN109727447A (en) * | 2016-06-15 | 2019-05-07 | 湖南工业大学 | Locomotive speed detects method for filtering signals |
| CN111028805A (en) * | 2019-12-20 | 2020-04-17 | 中北大学 | Liquid crystal driving method based on inverter circuit |
-
2013
- 2013-11-15 CN CN201320723947.6U patent/CN203554400U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075738A (en) * | 2014-07-28 | 2014-10-01 | 成都千嘉科技有限公司 | Flow collection system based on flow metering device |
| CN104075738B (en) * | 2014-07-28 | 2016-06-08 | 成都千嘉科技有限公司 | A kind of flow collection system based on flow measurement device |
| CN109727447A (en) * | 2016-06-15 | 2019-05-07 | 湖南工业大学 | Locomotive speed detects method for filtering signals |
| CN111028805A (en) * | 2019-12-20 | 2020-04-17 | 中北大学 | Liquid crystal driving method based on inverter circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20141115 |
|
| EXPY | Termination of patent right or utility model |