CN202982024U - Signal following denoising circuit for X-ray machine - Google Patents
Signal following denoising circuit for X-ray machine Download PDFInfo
- Publication number
- CN202982024U CN202982024U CN 201320013100 CN201320013100U CN202982024U CN 202982024 U CN202982024 U CN 202982024U CN 201320013100 CN201320013100 CN 201320013100 CN 201320013100 U CN201320013100 U CN 201320013100U CN 202982024 U CN202982024 U CN 202982024U
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- phase
- amplifier
- signal
- inverse
- circuit
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Abstract
The utility model relates to a signal following denoising circuit for an X-ray machine, and belongs to the technical field of medical instruments. The signal following denoising circuit structurally consists of an in-phase amplifier (1), an inverse-phase amplifier (2), a differential amplifier (3) and an inverse-phase amplifier (4), and is characterized in that signals which are completely the same as the original signals are obtained and sent to the inverse-phase input end of the differential amplifier (3) after input signals pass through the circuit of the inverse-phase amplifier (2); completely inverse-phase signals compared with the original signals are obtained and sent to the in-phase input end of the differential amplifier (3) after the input signals pass through the circuit of the inverse-phase amplifier (2); the parameters of the inverse-phase amplifier (4) are adjusted; completely inverse-phase signals compared with the original input signals are obtained at the output end of the differential amplifier (3); and effective in-phase denoising signals compared with the original input signals are obtained after inverse phase of the inverse-phase amplifier (4). The signal following denoising circuit has the advantages of being simple and reliable in scheme, high in system reliability, convenient for peripheral control, high in precision and outstanding in performance on anti-interfere.
Description
Technical field
This utility model belongs to technical field of medical instruments.
Background technology
In technical field of medical instruments, the medical imaging signal is transferred to after being collected in the process of AD device, inevitably can be subject to the interference of noise, the final quality that affects image, even might damage the AD device of rear end, although filter noise cancellation circuit commonly used has certain effect, existence between output signal and input signal also often appears than the situation of big difference and the situation such as temperature drift is serious.
Summary of the invention
The purpose of this utility model is: the filtering signal of video signal is transferred to the noise jamming that is subject in the process of AD device after being collected, reliability is high, good stability, and temperature drift is little.
the technical solution of the utility model is: its structure is by the positive amplifier, inverting amplifier, differential amplifier, another inverting amplifier forms, it is characterized in that: the signal of input obtains after through the positive amplifier circuit with original identical signal and sends into the negative-phase input of differential amplifier, the signal of input is through obtaining after inverting amplifier circuit with the fully anti-phase signal of original signal and sending into the normal phase input end of differential amplifier, adjust the parameter of differential amplifier, outfan at differential amplifier obtains and the complete anti-phase signal of original input signal, after anti-phase through another inverting amplifier, obtain with original input signal homophase and filtering the useful signal of noise.
The beneficial effects of the utility model are: scheme is simple and reliable, system stability is high, peripheral control is convenient, positive amplifier, inverting amplifier, differential amplifier and inverting amplifier all adopt the LM6643 chip with rail to rail function, it is high that this chip has precision, good stability, especially outstanding aspect anti-interference and resisting temperature drift.
Description of drawings
Fig. 1: a kind of signal for X-ray production apparatus is followed the schematic diagram of filter noise cancellation circuit.
Specific implementation method
with reference to accompanying drawing, its structure is by positive amplifier (1), inverting amplifier (2), differential amplifier (3), inverting amplifier (4) forms, it is characterized in that: the signal of input obtains after through positive amplifier (1) circuit with original identical signal and sends into the negative-phase input of differential amplifier (3), the signal of input is through obtaining with the fully anti-phase signal of original signal and sending into the normal phase input end of differential amplifier (3) after inverting amplifier (2) circuit, adjust the parameter of differential amplifier, outfan at differential amplifier (3) obtains and the complete anti-phase signal of original input signal, after anti-phase through inverting amplifier (4), obtain with original input signal homophase and filtering the useful signal of noise.
Two doors that adopt on the chip LM6643 of the same rail of having to rail function due to positive amplifier (1) and inverting amplifier (2), differential amplifier (3) and inverting amplifier (4) are also two doors that adopt on the chip LM6643 of the same rail of having to rail function, and the LM6643 chip that adopts has rail to rail function, therefore have that scheme is simple, reliability is high, system stability is good, temperature drift is little, capacity of resisting disturbance is strong, can be good at guaranteeing the advantage of the effectiveness of signal.
Claims (1)
1. a signal that is used for X-ray production apparatus is followed the filter noise cancellation circuit, its structure is by positive amplifier (1), inverting amplifier (2), differential amplifier (3), inverting amplifier (4) forms, it is characterized in that: the signal of input obtains after through positive amplifier (1) circuit with original identical signal and sends into the negative-phase input of differential amplifier (3), the signal of input is through obtaining with the fully anti-phase signal of original signal and sending into the normal phase input end of differential amplifier (3) after inverting amplifier (2) circuit, adjust the parameter of differential amplifier, outfan at differential amplifier (3) obtains and the complete anti-phase signal of original input signal, after anti-phase through inverting amplifier (4), obtain with original input signal homophase and filtering the useful signal of noise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320013100 CN202982024U (en) | 2013-01-11 | 2013-01-11 | Signal following denoising circuit for X-ray machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320013100 CN202982024U (en) | 2013-01-11 | 2013-01-11 | Signal following denoising circuit for X-ray machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202982024U true CN202982024U (en) | 2013-06-12 |
Family
ID=48553260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320013100 Expired - Fee Related CN202982024U (en) | 2013-01-11 | 2013-01-11 | Signal following denoising circuit for X-ray machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202982024U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929571A (en) * | 2013-01-11 | 2014-07-16 | 南京普爱射线影像设备有限公司 | Video signal processing circuit |
| CN107483874A (en) * | 2017-10-10 | 2017-12-15 | 佛山市蓝天网络科技有限公司 | Semi-digital building conversational system IP network connector |
-
2013
- 2013-01-11 CN CN 201320013100 patent/CN202982024U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103929571A (en) * | 2013-01-11 | 2014-07-16 | 南京普爱射线影像设备有限公司 | Video signal processing circuit |
| CN107483874A (en) * | 2017-10-10 | 2017-12-15 | 佛山市蓝天网络科技有限公司 | Semi-digital building conversational system IP network connector |
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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: 20130612 Termination date: 20160111 |