CN204600471U - A kind of signal supervisory instrument - Google Patents
A kind of signal supervisory instrument Download PDFInfo
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- CN204600471U CN204600471U CN201520226666.9U CN201520226666U CN204600471U CN 204600471 U CN204600471 U CN 204600471U CN 201520226666 U CN201520226666 U CN 201520226666U CN 204600471 U CN204600471 U CN 204600471U
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Abstract
This utility model embodiment discloses a kind of signal supervisory instrument, and this device comprises: fixing band and differential amplifier circuit, wherein, is provided with several electrode slices inside described fixing band; An electrode slice is had at least as emission electrode sheet in several electrode slices described, have two electrode slices in several electrode slices described at least as two collecting electrode sheets, and described two collecting electrode sheets are connected with two inputs of described differential amplifier circuit respectively; All described electrode slices are all arranged on the medial surface of described fixing band, and the mating shapes of the distribution shape of electrode slice on described fixing band and at least one skull suture on the skull of measurand.When this device is for detecting situation in cranium brain, during the location matches of the electrode slice position inside fixing band and a cranium brain skull suture, the electromagnetic wave signal received is more clear, again by differential amplifier circuit process, eliminate the interfering signal be loaded on electrode slice, and then the situation of intracranial can be reacted more accurately.
Description
Technical field
This utility model relates to signal detection technique field, especially relates to a kind of signal supervisory instrument for detecting hydrocephalus or cerebral edema.
Background technology
Electromagnetic wave signal can in media as well with the form Propagation of Energy of ripple, and the electromagnetic wave signal of same frequency has different waveforms when different Propagations, therefore, electromagnetic wave signal can be utilized to distinguish different media.Usually, the method utilizing electromagnetic wave signal to distinguish different medium mainly comprises the following steps: first, each class testing medium is launched to the electromagnetic wave signal of a same frequency, electromagnetic wave signal is propagated in test substance; Then, received through after test substance at electromagnetic wave signal; Finally, compare the similarities and differences between each received electromagnetic wave signal, distinguish different classes of medium thus.
According to the method described above, the impurity in electromagnetic wave signal detection something can be utilized, such as, the hydrops in detection biological tissue or clot etc.First obtain certain frequency electromagnetic signal propagate in pure biological tissue after Wave data, and using this Wave data as normal data, then at the multiple electrode slice of biological tissue's paste outside, each electrode slice has particular community, comprising outwards launching the emission electrode sheet of certain frequency electromagnetic signal, the collecting electrode sheet receiving electromagnetic wave signal and ground electrode sheet.When there is hydrops or clot in somewhere in biological tissue, due to the electromagnetic wave signal of same frequency propagate in biological tissue, hydrops or clot after Wave data different, therefore, if the Wave data of the electromagnetic wave signal received by collecting electrode sheet is different from above-mentioned normal data, there is hydrops or clot in the propagation path of the inherent electromagnetic wave signal of deducibility biological tissue.
When utilizing electromagnetic wave signal to detect biological tissue, medical personnel are needed electrode slice to be affixed to the predeterminated position of measurand, because the technical merit of different medical personnel's adhesive electrode sheet is different.Such as, the electrode slice position of pasting when pasting is different, or electrode slice after pasting is insecure, occurs to loosen or come off, the electromagnetic wave signal that capital causes collecting electrode sheet to receive is interfered, and then cannot reflect the situation of pathological changes in biological tissue accurately, truly.
Utility model content
This utility model embodiments provides a kind of signal supervisory instrument.
In order to solve the problems of the technologies described above, this utility model embodiment discloses following technical scheme:
A kind of signal supervisory instrument, described device comprises: fixing band and differential amplifier circuit, wherein, is provided with several electrode slices inside described fixing band; An electrode slice is had at least as emission electrode sheet in several electrode slices described, have two electrode slices in several electrode slices described at least as two collecting electrode sheets, and these two collecting electrode sheets described are connected with two inputs of described differential amplifier circuit respectively; All described electrode slices are all arranged on the medial surface of described fixing band, and the mating shapes of the distribution shape of electrode slice on described fixing band and at least one skull suture on the skull of measurand.
Preferably, described electrode slice is fixed on described fixing band by the mode of pasting or sew up.
Preferably, described fixing band is one, and described fixing band forms one and closes and the ring-type that can be set on described measurand skull.
Preferably, described fixing band is many, is connected between many described fixing bands, forms the space that can be held the skull of described measurand.
Preferably, the distribution shape of the electrode slice on every bar fixing band respectively from the mating shapes of the different skull suture on the skull of described measurand.
Preferably, described fixing band is elastic webbing.
Preferably, described differential amplifier circuit comprises difference amplifier, for carrying out differential amplification process to the signal received from described two collecting electrode sheets, and obtains echo signal.
From above technical scheme, the beneficial effect of a kind of signal supervisory instrument that this utility model embodiment provides comprises:
When this signal supervisory instrument is for detecting situation in cranium brain, during the mating shapes of the electrode slice shape inside fixing band and a human brain skull suture, when electrode slice is as collecting electrode sheet, the electromagnetic wave signal received is more clear, again by this electromagnetic wave signal by differential amplifier circuit process, eliminate the interfering signal be loaded on collecting electrode sheet, and then the error between the echo signal of acquisition and the actual signal of measurand is reduced, the accuracy of measurement result is improved, and then more can react the situation of intracranial exactly.
Due to the mating shapes of at least one skull suture on the distribution shape of the electrode slice on fixing band and the skull of measurand, and skull suture hinders degree to be less than the degree of skull to electromagnetic obstruction to electromagnetic wave, therefore, stronger electromagnetic wave signal be launched or be received to electrode slice inside fixing band, no matter as emitter stage or receiving pole, can.
In addition, differential amplifier circuit has the effect suppressing interference, therefore the electromagnetic wave signal received, by after differential amplifier circuit, can be eliminated the interfering signal being loaded into receiving terminal because electrode slice stickup is loosening or come off, make the electromagnetic wave signal through differential amplifier circuit output cleaner.
Accompanying drawing explanation
In order to be illustrated more clearly in this utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, for those of ordinary skills, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of a kind of signal supervisory instrument that Fig. 1 provides for this utility model embodiment;
The structural representation of the another kind of signal supervisory instrument that Fig. 2 provides for this utility model embodiment;
The schematic diagram of the mating shapes of any skull suture on the distribution shape of electrode slice and skull in the fixing band of a kind of signal supervisory instrument that Fig. 3 provides for this utility model embodiment;
The schematic diagram that in the fixing band of a kind of signal supervisory instrument that Fig. 4 provides for this utility model embodiment, on the distribution shape of electrode slice and skull, the shape of any skull suture does not match;
The flow chart of a kind of signal detection processing method that Fig. 5 provides for this utility model embodiment;
The circuit diagram of the differential amplifier circuit of a kind of signal supervisory instrument that Fig. 6 provides for this utility model embodiment.
Detailed description of the invention
Technical scheme in this utility model embodiment is understood better in order to make those skilled in the art person, and enable the above-mentioned purpose of this utility model embodiment, feature and advantage become apparent more, below in conjunction with accompanying drawing, technical scheme in this utility model embodiment is described in further detail.
This utility model embodiment provides a kind of signal supervisory instrument, be particularly useful for detecting the skull of measurand, as shown in Figure 1, this signal supervisory instrument comprises: fixing band 1 and differential amplifier circuit 3, wherein, the inner side of fixing band 1 is provided with several electrode slices 2; Have an electrode slice in several electrode slices at least as emission electrode sheet, and this emission electrode sheet is connected with emitter stage.
In said apparatus, have two electrode slices in several electrode slices 2 at least as two collecting electrode sheets, described two electrode slices are set to receiving pole A and receiving pole B respectively, and receiving pole A and receiving pole B are connected with two inputs of differential amplifier circuit 3 respectively.
In said apparatus, all electrode slices 2 are all arranged on the medial surface of fixing band 1, and the mating shapes of the distribution shape of electrode slice 2 on fixing band and at least one skull suture on the skull of measurand.
In the disclosed embodiments, the distribution shape of electrode slice refers to the shape of the line of the central point of multiple electrode slice.
Bones of cerebral cranium is by paired parietal bone, and temporal bone and azygous frontal bone, sieve skeleton, sphenoid bone, occipital bone is totally 8 pieces of bone compositions, is connected, jointly forms cranial cavity between 8 pieces of bones of cerebral craniums by skull suture.Skull suture refers to the gap between skull, and combine with zigzag sutura cranii between each bone of adult's braincap, the position of skull suture is metastable.Collagen fiber are main load units of skull suture.Wherein the junction of frontal bone and both sides parietal bone is coronal suture, and the junction of both sides parietal bone is sagittal suture, and the junction of both sides parietal bone and occipital bone is lambdoid suture, temporal bone and parietal bone, and the junction of sphenoid bone is squamous suture.
The mating shapes of at least one skull suture on the distribution shape of the electrode slice on above-mentioned fixing band and the skull of measurand refers to: the shape of at least one skull suture on the shape of the line of the central point of multiple electrode slice and the skull of measurand coincides, or partial shape overlaps, or the distance of at least one skull suture is less than the width be wired on it on one side of the central point of electrode slice on the line of electrode slice central point and skull, on the skull of i.e. measurand, the shape of at least one skull suture is comprised in the shape area of multiple electrode slices compositions of fixing band, or the half of skull suture or shape over half are all included in the shape area of multiple electrode slice composition.
As shown in Figure 1, in the embodiment of the present application, the fixing band of shown in this device is the first fixing band 1, and when this device only comprises a fixing band, fixing band can form one and close and the ring-type that can be set on described measurand skull.As shown in Figure 1, the first fixing band 1 is circular, and like this when this checkout gear is used for detecting the skull of people, the first fixing band 1 can be enclosed within described crinial bone.
As shown in Figure 1, first fixing band 1 is provided with multiple electrode slice 2, wherein, multiple electrode slice 2 points makes two parts, from Fig. 1, two electrode slices 2 in left side can be one group, and two, right side electrode slice 2 can be one group, and the distribution shape often organizing electrode slice all can with the matching of the shape of of a measurand skull suture.
In embodiment as shown in Figure 1, this device at least needs four electrode pair measured targets to detect, and described four electrodes are connected with electrode slice respectively, and these four electrodes are respectively:
Emission electrode sheet, is connected with emitter stage, for measured target electromagnetic signals;
Two collecting electrode sheets, i.e. receiving pole A and receiving pole B, for receiving the electromagnetic wave signal through measured target, and two electrode slices received are by receiving pole A and receiving pole B, are connected with two inputs of differential amplifier circuit;
Ground electrode sheet, namely with reference to earthing pole.
As shown in Figure 1, wherein emitter stage and receiving pole A are one group in the position that above-mentioned four electrode slices are pasted; Earthing pole and receiving pole B are one group, and are relatively distributed on the medial surface of fixing band 1.Preferably, in other embodiments, signal supervisory instrument can arrange multiple collecting electrode sheet, and the position of described multiple receiving pole electrode slice is not limited to the position of receiving pole A and receiving pole B.
As shown in Figure 1, the electromagnetic wave signal that receiving pole A and receiving pole B receives carries out difference processing through differential amplifier circuit 3, obtains echo signal r (t).Above-mentioned differential amplifier circuit comprises difference amplifier, and this difference amplifier carries out differential amplification process to the electromagnetic wave signal received.
As shown in Figure 6, for the circuit diagram of the differential amplifier circuit that the present embodiment provides, the common mode output circuit comprising difference amplifier U1 and be made up of U2, U3, wherein receiving pole A is connected with the input D_IN+ of differential amplifier circuit, and after resistance R3 and electric capacity C3, as an input+IN of difference amplifier U1; Receiving pole B is connected with another input D_IN-of differential amplifier circuit, and after resistance R4 and electric capacity C4, as another input-IN of difference amplifier U1; The electromagnetic wave signal received, after difference amplifier U1, obtains output signal VOUT, this output signal VOUT and exports echo signal r (t) through resistance R20 again.
As shown in Figure 2, in other embodiment of the application, this checkout gear can comprise: the first fixing band 11 and the second fixing band 12, wherein, the description of the first fixing band 11 in detail can see the description in the last period, second fixing band 12 is semicircular, and the two ends of the second fixing band 12 are all fixed on the first fixing band 11, and the fixed position at the two ends of the second fixing band 12 lays respectively at both sides relative on the first fixing band 11.
In the embodiment of the present application, the second fixing band 12 can be provided with electrode slice, also can not be provided with electrode slice, specifically whether arrange, can unrestricted choice according to actual needs.When the second fixing band 12 is provided with electrode slice, the distribution shape of the electrode slice on the second fixing band 12 is not identical with the distribution shape of the electrode slice on the first fixing band 11, the distribution shape of the electrode slice namely on every bar fixing band respectively from the mating shapes of the different skull suture on the skull of described measurand.
As shown in Figure 3, citing illustrates, three kinds of situations of the mating shapes of at least one skull suture on the distribution shape of the electrode slice on fixing band and the skull of measurand, wherein, solid line represents the line of the central point of 4 electrode slices, and dotted line represents a skull suture on skull.Above Fig. 3 only illustrates three kinds of situations of the mating shapes of a shape skull suture of electrode slice centrage, other situation similar or close to Fig. 3 also belongs to, in the scope of the mating shapes of at least one skull suture on the distribution shape of the electrode slice on described fixing band and the skull of measurand.
As shown in Figure 4, the situation that the shape of at least one skull suture on the distribution shape of the electrode slice on fixing band and the skull of measurand does not match, wherein, solid line represents the line of the central point of 4 electrode slices, and dotted line represents a skull suture on skull.Above Fig. 4 only illustrates two kinds of situations that the shape of a shape skull suture of electrode slice centrage does not match, other is similar to Fig. 4 or close, the situation etc. that such as shape area of multiple electrode slice composition does not comprise any skull suture half or shape over half on cranium brain all belongs to, in the scope that the shape of at least one skull suture on the distribution shape of the electrode slice on described fixing band and the skull of measurand does not match.
In other embodiment of the disclosure, according to actual needs, this signal supervisory instrument can also comprise more fixing band, but is connected between many described fixing bands, forms the space that can be held the skull of described measurand.
In addition, in order to improve the comfortableness when wearing, aforementioned all fixing bands can be all elastic webbing, so in use, can make to be positioned at the skin close contact of electrode slice inside fixing band and measurand.
In the disclosed embodiments, electrode slice 2 can select the mode of stickup and fixing band to fix, and the mode sewed up also can be selected to be sewn on fixing band by electrode slice 2.
This this signal supervisory instrument that disclosure embodiment provides in use, can fixing band be fixed on the skull of measurand, and several electrode slices on fixing band and skull suture are fitted, and the position of two arrays of electrodes sheet on fixing band 11 can fit with the squamous suture of people respectively.
When the some electrode slices on fixing band use as emitter stage, can by skull suture to electromagnetic signals in skull, when the some electrode slices on fixing band use as receiving pole, can receive by skull suture the electromagnetic wave signal transmitted in skull.
Because the main load unit of skull suture is collagen fiber, compare the bony structures of skull, skull suture hinders degree to be less than the degree that skull hinders electromagnetic wave to electromagnetic wave.So when the some electrode slices on fixing band use as emitter stage, the electromagnetic wave signal intensity entered after transmitting in cranial cavity is larger; When the some electrode slices on fixing band use as receiving pole, receive the electromagnetic wave signal intensity sent in cranial cavity larger.Therefore when this checkout gear is used for detecting cerebral edema or hydrocephalus, the electromagnetic wave signal detected is comparatively strong, and then makes the result carrying out measuring according to electromagnetic wave signal accurate.
In addition, when the electrode slice of emitter stage or earthing pole paste occur to loosen time, to cause receiving pole A and receiving pole B may produce some interfering signals, comprise interference noise, and interference noise generally can be equivalent, side by side be loaded on two receiving poles, when through differential amplifier circuit 3, because differential amplifier circuit 3 pairs of common-mode signals have very strong rejection ability, therefore, interfering signal on receiving pole A and receiving pole B is suppressed, namely the echo signal r (t) exported is the electromagnetic difference that receiving pole A and receiving pole B receive, because the interference noise that above-mentioned two signals load is equivalent, so its difference is zero.Therefore, after differential amplifier circuit 3, interference noise is suppressed, obtain clean echo signal, and then overcome electrode slice paste loosen and produce interference noise on the impact of measurement result, improve the accuracy of measurement result, the situation of intracranial edema can be reacted really.
On the basis of said apparatus embodiment, the disclosure embodiment still provides a kind of signal detection processing method.As shown in Figure 5, the method comprises the following steps:
Step S101: control electromagnetic wave signal discharger to emitter stage emitting electromagnetic wave.
Electromagnetic wave signal discharger by preset electromagnetic wave signal by emitter stage to measured target electromagnetic signals, above-mentioned electromagnetic wave signal discharger can be signal generator, and this signal generator can select the electromagnetic wave signal of certain frequency.Before carrying out electromagnetic signals, on fixing band, emission electrode sheet is connected by gauge tap with electromagnetic wave signal discharger, and then in this step, can be connected by least one electrode slice by gauge tap with electromagnetic wave signal discharger.
Step S102: obtain the electromagnetic wave signal received from least two collecting electrode sheets;
As shown in Figure 2, when there being the electrode slice of multiple reception, several electrode slices with one group, emitter stage can be connected to receiving pole A, several electrode slices with earthing pole one group are connected to receiving pole B, and receiving pole A and receiving pole B is as two inputs of differential amplifier circuit.Before execution step S102, the electrode slice of all receptions can be connected by gauge tap with receiving pole, and then in this step, by gauge tap, the collecting electrode sheet of at least two on fixing band can be connected with electromagnetic wave signals receiver.
Step S103: differential amplification process is carried out to the electromagnetic wave signal that described at least two collecting electrode sheets receive, and obtains echo signal r (t).
The electromagnetic wave signal received from least two collecting electrode sheets carries out differential amplification process, and then eliminate because stickup error or electrode slice loosen the interfering signal caused, because differential amplifier circuit has the effect suppressing electromagnetic interference, therefore the electromagnetic wave signal through differential amplifier circuit process is more clear, eliminate interfering signal, make the signal of reception cleaner.Again the echo signal r (t) obtained is carried out digital-to-analogue conversion, the analyses such as orthogonalization process, calculate the situation assessing measurand intracranial.
In addition, due to the mating shapes of a skull suture on the distribution shape of the electrode slice on fixing band and the skull of described measurand, so when on head checkout gear being worn on measurand, the position of a skull suture on the position of emission electrode sheet and the skull of measurand can be made corresponding by the position adjusting checkout gear, the position of the line of the central point of multiple electrode slice can be made to be positioned in skull suture, and then electrode slice is fitted on the skin of measurand along skull suture.
Because the main load unit of skull suture is collagen fiber, compare the bony structures of skull, skull suture hinders degree to be less than the degree that skull hinders electromagnetic wave to electromagnetic wave.So when the electrode slice launched is used as emitter stage, the electromagnetic wave signal intensity entered after transmitting in cranial cavity is larger.
In like manner, when the electrode slice received is used as receiving pole, the electromagnetic wave signal intensity sent in cranial cavity is received larger.
Therefore, when utilizing the method to detect cerebral edema or hydrocephalus, the electromagnetic wave signal detected is comparatively strong, and then makes the result carrying out measuring according to electromagnetic wave signal accurate, can react the situation of intracranial edema really.
The above is only detailed description of the invention of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from this programme principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. a signal supervisory instrument, is characterized in that, described device comprises: fixing band and differential amplifier circuit, wherein,
Several electrode slices are provided with inside described fixing band;
An electrode slice is had at least as emission electrode sheet in several electrode slices described,
Have two electrode slices in several electrode slices described at least as two collecting electrode sheets, and described two collecting electrode sheets are connected with two inputs of described differential amplifier circuit respectively;
All described electrode slices are all arranged on the medial surface of described fixing band, and the mating shapes of the distribution shape of electrode slice on described fixing band and at least one skull suture on the skull of measurand.
2. device according to claim 1, is characterized in that, described electrode slice is fixed on described fixing band by the mode of pasting or sew up.
3. device according to claim 1, is characterized in that, described fixing band is one;
Described fixing band forms one and closes and the ring-type that can be set on described measurand skull.
4. device according to claim 1, is characterized in that, described fixing band is many;
Be connected between many described fixing bands, form the space that can be held the skull of described measurand.
5. device according to claim 4, is characterized in that, the distribution shape of the electrode slice on every bar fixing band respectively from the mating shapes of the different skull suture on the skull of described measurand.
6. the device according to any one of claim 1-5, is characterized in that, described fixing band is elastic webbing.
7. device according to claim 1, is characterized in that,
Described differential amplifier circuit comprises difference amplifier, for carrying out differential amplification process to the signal received from described two collecting electrode sheets, and obtains echo signal.
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| CN201520226666.9U CN204600471U (en) | 2015-04-15 | 2015-04-15 | A kind of signal supervisory instrument |
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| CN201520226666.9U CN204600471U (en) | 2015-04-15 | 2015-04-15 | A kind of signal supervisory instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104757971A (en) * | 2015-04-15 | 2015-07-08 | 重庆博恩富克医疗设备有限公司 | Signal detection device and method |
| WO2016165219A1 (en) * | 2015-04-15 | 2016-10-20 | 重庆博恩富克医疗设备有限公司 | Method and device for controlling electrode plate |
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2015
- 2015-04-15 CN CN201520226666.9U patent/CN204600471U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104757971A (en) * | 2015-04-15 | 2015-07-08 | 重庆博恩富克医疗设备有限公司 | Signal detection device and method |
| WO2016165218A1 (en) * | 2015-04-15 | 2016-10-20 | 重庆博恩富克医疗设备有限公司 | Signal detection device and method |
| WO2016165219A1 (en) * | 2015-04-15 | 2016-10-20 | 重庆博恩富克医疗设备有限公司 | Method and device for controlling electrode plate |
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