CN204290935U - Digital data recording system multi-channel analog signal isolation processing module - Google Patents
Digital data recording system multi-channel analog signal isolation processing module Download PDFInfo
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- CN204290935U CN204290935U CN201520001394.2U CN201520001394U CN204290935U CN 204290935 U CN204290935 U CN 204290935U CN 201520001394 U CN201520001394 U CN 201520001394U CN 204290935 U CN204290935 U CN 204290935U
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- analog signal
- signal
- reference voltage
- operation device
- turner
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- 238000002955 isolation Methods 0.000 title claims abstract description 7
- 230000003750 conditioning effect Effects 0.000 abstract description 7
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009897 systematic effect Effects 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Abstract
The utility model relates to a kind of digital data recording system multi-channel analog signal isolation processing module, belongs to the module in airborne avionics recording system.Reference voltage follower is electrically connected with reference voltage scale operation device, reference voltage signal turner order, analog signal follower is electrically connected with analog signal scale operation device, this reference voltage signal turner is connected with analog signal summer respectively with analog signal scale operation device, and this analog signal summer is connected with analog signal turner.Advantage is novel structure, and peripheral circuit is less, and circuit is simple, and real-time is good, and reliability is higher, solves at the bottom of signal condition precision and the problem of poor stability, and the signal distortion through conditioning is not more than 1%, and volume is little, compatible and stability is better.
Description
Technical field
The utility model belongs to the module in airborne avionics recording system, refers in particular to analog signal isolating processing module.
Background technology
In current airborne avionics data recording equipment system, signal conditioning circuit part has two kinds of modes: the first adopts cable directly to connect or electric resistance partial pressure current-limiting mode, this mode is easy to cause the current overload of late-class circuit and distribute inequality cause job insecurity, and signal Adjustment precision does not reach requirement; The isolation of the second signal adopts Phototube Coupling mode, but Phototube Coupling mode does not accomplish to bipolar analog signal the requirement that signal truly reduces, and causes systematic error larger.
Summary of the invention
The utility model relates to a kind of digital data recording system multi-channel analog signal isolation processing module, to solve the job insecurity that signal conditioning circuit exists, the problem that precision is low, systematic error is larger.
The technical scheme that the utility model is taked is: reference voltage follower is electrically connected with reference voltage scale operation device, reference voltage signal turner order, analog signal follower is electrically connected with analog signal scale operation device, this reference voltage signal turner is connected with analog signal summer respectively with analog signal scale operation device, and this analog signal summer is connected with analog signal turner.
The utility model has the advantages that novel structure, peripheral circuit is less, and circuit is simple, real-time is good, and reliability is higher, solves at the bottom of signal condition precision and the problem of poor stability, signal distortion through conditioning is not more than 1%, and volume is little, compatible and stability is better.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Reference voltage follower 1 is electrically connected with reference voltage scale operation device 2, reference voltage signal turner 3 order, analog signal follower 4 is electrically connected with analog signal scale operation device 5, this reference voltage signal turner 3 is connected with analog signal summer 6 respectively with analog signal scale operation device 5, and this analog signal summer 6 is connected with analog signal turner 7.
Operation principle: inputted the preliminary conditioning carrying out signal through reference voltage follower by reference power supply, after carry out the scale operation of voltage to nurse one's health the amplitude of reference voltage through the scale operation device of reference voltage, again after the signal upset that reference voltage signal turner carries out voltage, receive the summing circuit in analog signal conditioner circuit, reference voltage is nursed one's health afterwards and analog signal carries out summation operation;
Analog signal input through analog signal follower carry out analog signal isolation and stable after, again after analog signal scale operation device resize ratio with conditioning after the reference voltage absolute value that carries out analog signal through analog signal summer promote, eventually pass the once inside out that analog signal turner carries out analog signal voltage a Y-axis, the conditioned signal required for output.
As Fig. 2, figure comprise reference voltage modulate circuit, the reference voltage of input 3V exports the signal criterion voltage of-1.5V;
One tunnel analog signal AI1 is undertaken isolating with signal source by U1C voltage follower circuit, and strengthen the carrying load ability of model, at U1D by carrying out reverse add operation with reference voltage, improve the voltage (namely allowing output signal all at more than 0v) that signal exports, nurse one's health for back-end processor carries out sampling after voltage upset.
The utility model module 11 road analog signal conditioner circuit in parallel at most, and the interference that is independent of each other.Every road signal conditioning circuit is separate.
Claims (1)
1. a digital data recording system multi-channel analog signal isolation processing module, it is characterized in that: reference voltage follower is electrically connected with reference voltage scale operation device, reference voltage signal turner order, analog signal follower is electrically connected with analog signal scale operation device, this reference voltage signal turner is connected with analog signal summer respectively with analog signal scale operation device, and this analog signal summer is connected with analog signal turner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520001394.2U CN204290935U (en) | 2015-01-04 | 2015-01-04 | Digital data recording system multi-channel analog signal isolation processing module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520001394.2U CN204290935U (en) | 2015-01-04 | 2015-01-04 | Digital data recording system multi-channel analog signal isolation processing module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204290935U true CN204290935U (en) | 2015-04-22 |
Family
ID=52874061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520001394.2U Expired - Fee Related CN204290935U (en) | 2015-01-04 | 2015-01-04 | Digital data recording system multi-channel analog signal isolation processing module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204290935U (en) |
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2015
- 2015-01-04 CN CN201520001394.2U patent/CN204290935U/en not_active Expired - Fee Related
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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: 20150422 Termination date: 20190104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |