CN85100130A - Epidermic muscle-electricity transducer - Google Patents
Epidermic muscle-electricity transducer Download PDFInfo
- Publication number
- CN85100130A CN85100130A CN 85100130 CN85100130A CN85100130A CN 85100130 A CN85100130 A CN 85100130A CN 85100130 CN85100130 CN 85100130 CN 85100130 A CN85100130 A CN 85100130A CN 85100130 A CN85100130 A CN 85100130A
- Authority
- CN
- China
- Prior art keywords
- millimeters
- prestage
- trap level
- electricity
- epidermic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 239000010703 silicon Substances 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract 2
- 239000002184 metal Substances 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000003466 welding Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 1
- 230000003183 myoelectrical effect Effects 0.000 description 1
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- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The present invention is a kind of epidermic muscle-electricity transducer, and it belongs to a kind of pick off that rehabilitation engineering and bio electricity control technology field are used.
Circuit structure of the present invention, by prestage, four parts of amplifier stage, trap level and output stage are formed, and are characterized in: adopt two operational amplifiers of same silicon chip manufacturing to form homophases and connect the prestage of input, the trap level adopts the double T active electric network.
It is 29 millimeters that this epidermic muscle-electricity transducer adopts the micro module welding to be encapsulated in an external diameter, thickness is in 15 millimeters the ambroin box, is 15 grams together with the metal electrode that attaches skin in interior weight, two surface of metal electrode are gold-plated, diameter is 6～8 millimeters, and centre distance can be 20～25 millimeters.
Description
The present invention relates to the pick off that rehabilitation engineering and bio electricity control technology field are used.
The epidermic muscle-electricity transducer circuit of existing West Germany Otto Bo Ke company (otto Bock Ltd.) is made up of prestage, amplifier stage, trap level and four parts of output stage.Prestage adopts an operational amplifier to form differential input form.The trap level adopts passive twin-T network, exists input impedance low, and information loss is big and to the shortcoming a little less than the power frequency interference rejection capability.
The present invention proposes a kind of new circuit structure, and its feature is that two operational amplifiers that adopt same silicon chip to make are formed the prestage that Tong Xiang And connection is imported; The trap level adopts the double T active electric network.
The circuit structure that adopts the present invention to propose, the input impedance height of pick off (greater than 10M Ω), common mode rejection ratio height (greater than 90dB), and the power frequency that has suppressed 50HZ effectively disturbs, and obtained good effect in the clinical practice of myoelectric limb.
Accompanying drawing is a schematic circuit of the present invention.Four operational amplifier (A among the figure
1-4) be integrated on the same silicon chip; W is the gain-adjusted potentiometer, and resistance is 3.3K Ω～5.1K Ω; C
1Be operational amplifier A
1And A
2Capacitance, capacitance is 3.3 μ f～4.7 μ f; Resistance R
13And R
14Be the Proportional Feedback resistance of the active wave invigorating network of double T, resistance is respectively 3.3K Ω and 330 Ω, regulates the Q-value that their ratio can the appropriate change network.
In1 in the accompanying drawing and in2 are two metal electrodes that directly attach skin surface, and out is the output of circuit.The A point connects the metal isolated electrode among the figure.
It is that 29 millimeters of φ, thickness are in 15 millimeters the ambroin box that this epidermic muscle-electricity transducer adopts the welding of microminiature discrete device to be encapsulated in an external diameter, is 15 grams together with the metal electrode that attaches skin in interior weight, surface of metal electrode is gold-plated, diameter is 8 millimeters of φ 6～φ, and centre distance can be 20～25 millimeters.
Claims (3)
1, a kind of epidermic muscle-electricity transducer is made up of prestage, amplifier stage, trap level and four parts of output stage, it is characterized in that adopting two operational amplifiers of same silicon chip manufacturing to form the prestage of importing with being in parallel, and the trap level adopts the double T active electric network.
2,, it is characterized in that two operational amplifier A of prestage by claim 1 described epidermic muscle-electricity transducer
1And A
2Between capacitance is arranged, capacitance is 3.3 μ f～4.7 μ f.
3,, it is characterized in that the trap level adopts the double T active electric network of resistance feedback-type by claim 1 described epidermic muscle-electricity transducer.Feedback resistance is respectively 3.3k Ω and 330 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85100130 CN85100130A (en) | 1985-04-01 | 1985-04-01 | Epidermic muscle-electricity transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85100130 CN85100130A (en) | 1985-04-01 | 1985-04-01 | Epidermic muscle-electricity transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85100130A true CN85100130A (en) | 1986-07-30 |
Family
ID=4790910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85100130 Pending CN85100130A (en) | 1985-04-01 | 1985-04-01 | Epidermic muscle-electricity transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85100130A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101305939B (en) * | 2008-05-26 | 2010-06-02 | 哈尔滨工业大学 | An electric stimulator for sensory feedback of humanoid myoelectric prosthetic hand |
-
1985
- 1985-04-01 CN CN 85100130 patent/CN85100130A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101305939B (en) * | 2008-05-26 | 2010-06-02 | 哈尔滨工业大学 | An electric stimulator for sensory feedback of humanoid myoelectric prosthetic hand |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |