CN103156617A - Sensor for thorax-abdomen respiratory movement wave shapes - Google Patents
Sensor for thorax-abdomen respiratory movement wave shapes Download PDFInfo
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- CN103156617A CN103156617A CN2011104055762A CN201110405576A CN103156617A CN 103156617 A CN103156617 A CN 103156617A CN 2011104055762 A CN2011104055762 A CN 2011104055762A CN 201110405576 A CN201110405576 A CN 201110405576A CN 103156617 A CN103156617 A CN 103156617A
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Abstract
The invention relates to a sensor for measuring thorax-abdomen respiratory movement wave shapes and belongs to the technical field of medical monitoring. The sensor is manufactured by means of the amorphous wire giant stress impedance effect. The sensor is tied to a part of the thorax-abdomen to be measured by a specially equipped thorax-abdomen belt. Due to the respiratory movement, the circumference of the thorax-abdomen is changed, the change of the circumference conducts acting force to a sensor probe through the thorax-abdomen belt, and the respiratory movement wave shapes of a human body are obtained by signal extraction, signal amplification and signal filtering. The sensor for the thorax-abdomen respiratory movement wave shapes has the advantages of being high in sensitivity, small in size, strong in anti-interference performance, low in power consumption and the like. The defects that currently, a breath sensor is large in size and not high in sensitivity are solved. The novel breath sensor is widely applied to respiratory monitoring, sleep respiratory disturbance monitoring, critical patient monitoring and clinic in medicine and home health care.
Description
Technical field
What the present invention relates to is a kind of sensor that utilizes the measurement human body breast abdominal respiration moving wave shape of amorphous wire giant stress impedance effect development.Belong to the medical monitoring technical field.
Background technology
Along with scientific and technological development and social progress, the use of the monitoring instrument that human body breast abdominal respiration is moved also constantly increases.Sensor for breast abdominal respiration motion monitoring mainly contains three classes at present: the first kind adopts electrode detector respiratory thoracic impedance to change, and obtains associated electrical signals.Equations of The Second Kind adopts the elasticity inductance band that ties up to breast abdominal part periphery, detects the relevant displacement signal of respiratory mesothorax abdomen perimeter change.The 3rd class adopts the elastoresistance band that ties up to breast abdominal part periphery, obtains the resistance change signal relevant to respiratory.In actual applications, aforesaid way Shortcomings part all.The invalid breathing caused due to upper respiratory tract obstruction at first kind device None-identified.The Equations of The Second Kind device easily is subject to the electromagnetic interference of environment, simultaneously on the low side to the useful signal detection sensitivity.The 3rd class device is current widely used a kind of mode, and sensitivity is higher.But, because its strain resistor coefficient of strain adopted is limited, in order to improve the sensitivity of sensor, needing to increase the length of strain beam, the volume of probe just is difficult to do little like this; On the other hand, in order to reduce volume, sensitivity will reduce.Little and highly sensitive be difficult to of volume reaches simultaneously like this.It is little that we are badly in need of a kind of volume, and stable performance is highly sensitive, New pattern chest abdominal respiration moving wave shape sensor with low cost
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Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of volume little, stable performance, highly sensitive, with low cost New pattern chest abdominal respiration moving wave shape sensor.The present invention has utilized the giant stress impedance effect (GSI) of amorphous wire, the waveform of the measure of the change breast abdominal respiration motion by measuring the stress that the motion of breast abdominal respiration acts on probe.So-called giant stress impedance effect refers to that the impedance of amorphous wire when the axial stress of non-crystalline material (amorphous wire) changes also can significantly change.In the process of monitoring human breast abdominal respiration motion, the breast bellyband that sensor is specially joined by it lies in breast abdominal part detected part, human body changes because respiratory movement causes breast abdominal part girth, this variation makes stressed the changing of strain beam on sensor probe by the breast bellyband, strain beam generation miniature deformation, and then make stressed the changing of amorphous wire on strain beam, thereby the impedance meeting of described amorphous wire changes.The variation of impedance is changed into to the variation of voltage signal by signal extracting circuit, then send voltage amplifier circuit to, through bandwidth-limited circuit, obtain the signal in human body respiration motion frequency scope, thereby obtain the waveform of human body breast abdominal respiration motion.
For this reason, technical scheme of the present invention is: a kind of breast abdominal respiration moving wave shape sensor, it is comprised of amorphous wire sensor probe, signal extracting circuit, voltage amplifier circuit, bandwidth-limited circuit, it is characterized in that: described amorphous wire sensor probe is to be CoFeNbSiB by wherein being installed with main component, 30 to 40 microns of diameters, outside is coated with 5 microns glass, and has the amorphous wire of giant stress impedance effect and the PU material composition of its strain beam depended on and parcel thereof; The breast bellyband that sensor is specially joined by it lies in breast abdominal part detected part, human body changes because respiratory movement causes breast abdominal part girth, this variation makes stressed the changing of strain beam on sensor probe by the breast bellyband, strain beam generation miniature deformation, and then make stressed the changing of amorphous wire on strain beam, thereby the impedance meeting of described amorphous wire changes; Signal extracting circuit converts the variable quantity of the impedance of amorphous wire to the variable quantity of voltage; Described voltage variety is a kind of small-signal, this signal is sent into described voltage amplifier circuit and is amplified, amplifying signal is sent into to described bandwidth-limited circuit and carry out denoising, the bandwidth-limited circuit bandwidth is 0.2HZ to 0.5HZ, and the signal of output just can reflect the situation of breast abdominal respiration motion like this.
The present invention compared with prior art, have following distinguishing feature and good effect: 1, the power sensitive material amorphous wire of this breast abdominal respiration moving wave shape sensor has giant stress impedance effect (GSI), its coefficient of strain is than high 1 to 2 order of magnitude of traditional strain resistor, therefore sensitivity is higher, volume is less, and cost is lower.
The accompanying drawing explanation
Accompanying drawing 1 is the electric circuit constitute figure of the present invention.
The specific embodiment
As shown in Figure 1, the present invention is comprised of amorphous wire sensor probe 1, signal extracting circuit 2, voltage amplifier circuit 3, bandwidth-limited circuit 4.Described amorphous wire sensor probe 1 is comprised of the PU material of amorphous wire and its strain beam depended on and parcel.Described amorphous wire main component is CoFeNbSiB, and 30 to 40 microns of its diameters, wrapped up one deck glass on the surface of amorphous wire, and the thickness of glass is 5 microns.This amorphous wire is to axial STRESS VARIATION sensitivity, and when STRESS VARIATION, the impedance meeting of amorphous wire changes thereupon, i.e. giant stress impedance effect (GSI).In amorphous wire sensor probe 1, strain beam adopts the PCB circuit board, 1 millimeter of thickness, housing is square, 14 millimeters of the length of sides, endoporus is circular, 10 millimeters of diameters, square overlaps with circular central, on a pair of diagonal angle, the circular hole that a diameter is 2 millimeters is respectively arranged on the square frame, probe is fixed on to the two ends of breast bellyband with screw through circular hole, the active force be subject on the breast bellyband so just can be transformed on strain beam, foursquare another to a pad is respectively arranged on diagonal angle, for welding amorphous wire, the pretightning force that 0.2N will be arranged during the welding amorphous wire, after amorphous wire has welded, with two wires, the signal on the amorphous wire pad is drawn, then probe placement is wrapped up it with the PU material in the probe die cavity, put into vacuum drying oven, Temperature Setting is 120 degrees centigrade, ripening 5 hours, the amorphous wire probe completes like this.
Amorphous wire sensor probe 1 encourages by pulse current, makes it have giant stress impedance effect (GSI), by signal extracting circuit 2, the variation of impedance is converted to the variation of voltage.The breast bellyband that sensor is specially joined by it lies in breast abdominal part detected part, human body changes because respiratory movement causes breast abdominal part girth, this variation is transmitted to active force on the strain beam on sensor probe by the breast bellyband, when human body is exhaled, breast abdominal part girth is elongated, it is large that the pulling force of the breast bellyband that strain beam circular hole place is subject to becomes, whole strain beam becomes flat, the distance at amorphous wire pad two ends shortens, pretightning force 0.2N is arranged while welding due to amorphous wire, the power that amorphous wire is subject to reduces, it is large that impedance becomes, it is large that voltage signal becomes, in like manner, when human body is air-breathing, breast abdominal part girth shortens, the pulling force of the breast bellyband that strain beam circular hole place is subject to diminishes, whole strain beam returns to original state, it is large that the power that amorphous wire is subject to becomes, impedance diminishes, voltage signal diminishes.
Because the voltage order of magnitude of signal extracting circuit output is very little, by voltage amplifier circuit 3 by its amplification.In respiratory waveform signal after amplification, noise is arranged, be input in bandwidth-limited circuit 4, the passband of bandwidth-limited circuit be 0.2HZ to 0.5HZ, this frequency range is the frequency range of human body respiration, after band filter 4, the signal of output just can reflect the situation of breast abdominal respiration motion.
The present invention is simple in structure, reasonable in design, utilize the giant stress impedance effect of new material amorphous wire to be made into the power sensing probe, in the monitoring of breast abdominal respiration, the active force that the variation of breast abdominal part girth is produced converts corresponding voltage signal to and carries out signal processing, obtains the waveform of human body breast abdominal respiration motion.This invents novel in design, with high content of technology, with low cost, in the medical monitoring technical field of non-crystalline material, has filled up domestic blank.
The above; it is only better embodiment of the present invention; should not be regarded as limitation of the scope of the invention; and the claim scope that the present invention advocates is not limited to this; all personages who is familiar with this field skill; the disclosed technology contents according to the present invention, can think easily and equivalence change, all should fall within the scope of protection of the present invention.
Claims (1)
1. a breast abdominal respiration moving wave shape sensor, it is comprised of amorphous wire sensor probe, signal extracting circuit, voltage amplifier circuit, bandwidth-limited circuit, it is characterized in that: described amorphous wire sensor probe is to be CoFeNbSiB by wherein being installed with main component, 30 to 40 microns of diameters, outside is coated with 5 microns glass, and has the amorphous wire of giant stress impedance effect and the PU material composition of its strain beam depended on and parcel thereof; The breast bellyband that sensor is specially joined by it lies in breast abdominal part detected part, human body changes because respiratory movement causes breast abdominal part girth, this variation makes stressed the changing of strain beam on sensor probe by the breast bellyband, strain beam generation miniature deformation, and then make stressed the changing of amorphous wire on strain beam, thereby the impedance meeting of described amorphous wire changes; Signal extracting circuit converts the variable quantity of the impedance of amorphous wire to the variable quantity of voltage; Described voltage variety is a kind of small-signal, this signal is sent into described voltage amplifier circuit and is amplified, amplifying signal is sent into to described bandwidth-limited circuit and carry out denoising, the bandwidth-limited circuit bandwidth is 0.2HZ to 0.5HZ, and the signal of output just can reflect the situation of breast abdominal respiration motion like this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104055762A CN103156617A (en) | 2011-12-08 | 2011-12-08 | Sensor for thorax-abdomen respiratory movement wave shapes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104055762A CN103156617A (en) | 2011-12-08 | 2011-12-08 | Sensor for thorax-abdomen respiratory movement wave shapes |
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| CN103156617A true CN103156617A (en) | 2013-06-19 |
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| CN2011104055762A Pending CN103156617A (en) | 2011-12-08 | 2011-12-08 | Sensor for thorax-abdomen respiratory movement wave shapes |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068027A (en) * | 2015-07-17 | 2015-11-18 | 袁丽 | Intelligent magnetic sensor and vehicle detection method based on same |
| CN107273857A (en) * | 2017-06-19 | 2017-10-20 | 深圳市酷浪云计算有限公司 | The recognition methods of athletic performance and device, electronic equipment |
Citations (5)
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|---|---|---|---|---|
| CN86106763A (en) * | 1986-02-12 | 1988-04-20 | 输出技术公司 | Multiple ventilation monitor and method |
| JP2002078684A (en) * | 2000-09-08 | 2002-03-19 | Japan Science & Technology Corp | Pneumoencephalogram sensor |
| JP2006340820A (en) * | 2005-06-08 | 2006-12-21 | Institute Of National Colleges Of Technology Japan | Body motion sensing sensor, and body motion monitoring system using it |
| CN101822542A (en) * | 2010-04-28 | 2010-09-08 | 上海诺诚电气有限公司 | Thoracic abdominal breathing detector and method for detecting breathing |
| CN202397473U (en) * | 2011-12-08 | 2012-08-29 | 浩华科技实业有限公司 | Chest-abdominal portion respiratory movement waveform sensor |
-
2011
- 2011-12-08 CN CN2011104055762A patent/CN103156617A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106763A (en) * | 1986-02-12 | 1988-04-20 | 输出技术公司 | Multiple ventilation monitor and method |
| JP2002078684A (en) * | 2000-09-08 | 2002-03-19 | Japan Science & Technology Corp | Pneumoencephalogram sensor |
| JP2006340820A (en) * | 2005-06-08 | 2006-12-21 | Institute Of National Colleges Of Technology Japan | Body motion sensing sensor, and body motion monitoring system using it |
| CN101822542A (en) * | 2010-04-28 | 2010-09-08 | 上海诺诚电气有限公司 | Thoracic abdominal breathing detector and method for detecting breathing |
| CN202397473U (en) * | 2011-12-08 | 2012-08-29 | 浩华科技实业有限公司 | Chest-abdominal portion respiratory movement waveform sensor |
Non-Patent Citations (2)
| Title |
|---|
| 王潇睿: "基于非晶丝SI效应的阵列压力传感器研究", 《中国农业大学硕士学位论文》 * |
| 赵玉华等: "非晶合金CoFeNbSiB的纳米晶化及磁性", 《材料研究学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068027A (en) * | 2015-07-17 | 2015-11-18 | 袁丽 | Intelligent magnetic sensor and vehicle detection method based on same |
| CN107273857A (en) * | 2017-06-19 | 2017-10-20 | 深圳市酷浪云计算有限公司 | The recognition methods of athletic performance and device, electronic equipment |
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Application publication date: 20130619 |