CN201215589Y - Multi-path low noise charge sensitive amplifier circuit system for deep space detection - Google Patents
Multi-path low noise charge sensitive amplifier circuit system for deep space detection Download PDFInfo
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- CN201215589Y CN201215589Y CNU2008200804050U CN200820080405U CN201215589Y CN 201215589 Y CN201215589 Y CN 201215589Y CN U2008200804050 U CNU2008200804050 U CN U2008200804050U CN 200820080405 U CN200820080405 U CN 200820080405U CN 201215589 Y CN201215589 Y CN 201215589Y
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- charge sensitive
- sensitive amplifier
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Abstract
The utility model relates to a multi-path low-noise charge sensitive amplifier circuit system for the deep space exploration, belonging to the deep space exploration technology, which is specially used by a space X-ray detector, is a multi-path circuit. The multi-path low-noise charge sensitive amplifier circuit system comprises 20 paths of simulation signal input ends, 20 paths of signal control ends and a simulation signal output end, wherein the simulation signal input ends and the signal control ends have the same number, each signal control end is used to control the input of the corresponding each path of simulation signal through an external M C U, thereby controlling the input signals. Signals are amplified passing through a value-separating capacitance and then a high-gain charge sensitive amplifier after being input, signals which are amplified are secondly amplified by a high speed operational amplifier after passing through an R C filtering circuit, then are input into a follower passing through a differential circuit and a integrating circuit, and finally are controlled through entering into a simulation switch. The utility model is a circuit system with high input impedance, low noise and high gain.
Description
Technical field
The utility model relates to the survey of deep space technical field, is a kind of survey of deep space multichannel low-noise charge sensitive amplifier circuit system, is applicable to the amplification of small-signal such as electric charge in the survey of deep space.
Background technology
At present, space exploration needs high reliability, low-power consumption, lightweight detector circuit.But the charge sensitive amplifier circuit that is applicable to survey of deep space all has shortcomings such as complex structure, power consumption are big, and charge amplifier generally is the single channel (see figure 3), multiplex circuit design more complicated (seeing Fig. 2,4), and in survey of deep space, do not use.
The utility model content
The purpose of this utility model is to disclose a kind of survey of deep space multichannel low-noise charge sensitive amplifier circuit system, is the multiplex circuit design, and the circuit with high input impedance, low noise, high-gain is the special use of space X ray detector.
For achieving the above object, technical solution of the present utility model is:
A kind of survey of deep space multichannel low-noise charge sensitive amplifier circuit system for the special use of space X ray detector, is a multiplex circuit, comprises a plurality of input end of analog signal, a plurality of signal controlling end and an analog signal output; Its input end of analog signal is identical with signal controlling terminal number order, and each signal controlling end is controlled the input of pairing each road simulating signal by external microcontroller, can control input signal like this;
After the signal input, pass through earlier every value electric capacity, pass through the charge amplifier of high-gain again, signal is amplified, amplifying signal is by behind the RC filtering circuit, after by high speed operation amplifier signal being amplified once more, by differentiating circuit and integrating circuit again, the input follower enters analog switch at last and controls.
Described multichannel low-noise charge sensitive amplifier circuit system, its space X ray detector is surveyed high pressure and is added on the detector by pull-up resistor, detector detect signal that X ray and high energy particle produce respectively the input end of analog signal by separately be input into circuit;
After the signal input, pass through earlier every value electric capacity, pass through the charge amplifier of high-gain again, signal is amplified, amplifying signal is by behind the RC filtering circuit, after by high speed operation amplifier signal being amplified once more, by differentiating circuit and integrating circuit again, the input follower enters analog switch at last and controls.
Described multichannel low-noise charge sensitive amplifier circuit system, its each oneway circuit structure is:
One input end of analog signal, every value condenser network, charge sensitive amplifier circuit, RC filtering circuit, operation amplifier circuit, differentiating circuit and integrating circuit, follower, analog switch and an analog signal output are electrically connected by the standard order; Analog switch is through its signal controlling end and external microcontroller interactive communication.
Described multichannel low-noise charge sensitive amplifier circuit system, its described multiplex circuit is 20 the tunnel; Input end of analog signal is identical with signal controlling terminal number order, and number is 20.
Difference with the prior art of the present utility model is, way is many, is 20 the tunnel, and each road can be controlled by external microcontroller.
The beneficial effects of the utility model are, are that multiplex circuit simple in structure, that power consumption is little designs, and in light weight, have high reliability, advantage of low power consumption.In the development and production of space probe, under weight, space condition of limited, improve the signal to noise ratio (S/N ratio) of signal to greatest extent.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model;
Fig. 2 is a prior art circuits schematic diagram 1;
Fig. 3 is a prior art circuits schematic diagram 2;
Fig. 4 is a prior art circuits schematic diagram 3;
Fig. 5 is a circuit diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a survey of deep space multichannel low-noise charge sensitive amplifier circuit of the present utility model system, wherein, and pull-up resistor 1, every value resistance 2, charge amplifier 3, RC circuit 4, amplifier circuit 5, differentiating circuit 6, integrating circuit 7, follower 8, signal input 9, analog switch 10, signal output part 11, signal controlling end 12.
In Fig. 1, circuit has 20 input end of analog signal and an analog signal output and 20 signal controlling ends and forms, each signal controlling end is controlled the input of pairing each road simulating signal by external microcontroller, can control input signal like this.Signal input back is passed through earlier every value electric capacity, and signal passes through the charge amplifier of high-gain again, and signal is amplified.Signal amplifies signal by high speed operation amplifier more once more by behind the RC filtering circuit, and by differentiating circuit and integrating circuit, the input follower enters analog switch again and controls.
Survey of deep space multichannel low-noise charge sensitive amplifier circuit is a multiplex circuit, and each oneway circuit structure is:
One input end of analog signal, every value condenser network, charge sensitive amplifier circuit, RC filtering circuit, operation amplifier circuit, differentiating circuit and integrating circuit, follower, analog switch and an analog signal output are electrically connected by the standard order; Analog switch is through signal controlling end and external microcontroller interactive communication.
Workflow of the present utility model is: the space X ray detector is surveyed high pressure and is added on the detector by pull-up resistor, detector passes through every value electric capacity to the signal of X ray and high energy particle generation, by the charge amplifier of high-gain, signal is amplified again.Amplifying signal is by the RC filtering circuit, by high speed operation amplifier signal carried out after secondary amplifies, by differentiating circuit and integrating circuit again, pass through follower again, enter analog switch and control and export to data acquisition circuit, after the AD conversion, export from bus.
Claims (4)
1. a survey of deep space multichannel low-noise charge sensitive amplifier circuit system for the special use of space X ray detector, is a multiplex circuit, comprises a plurality of input end of analog signal, a plurality of signal controlling end and an analog signal output; It is characterized in that: input end of analog signal is identical with signal controlling terminal number order, and each signal controlling end is controlled the input of pairing each road simulating signal by external microcontroller, so that input signal is controlled;
After the signal input, pass through earlier every value electric capacity, pass through the charge amplifier of high-gain again, signal is amplified, amplifying signal is by behind the RC filtering circuit, after by high speed operation amplifier signal being amplified once more, by differentiating circuit and integrating circuit again, the input follower enters analog switch at last and controls.
2. multichannel low-noise charge sensitive amplifier circuit according to claim 1 system, it is characterized in that: the space X ray detector is surveyed high pressure and is added on the detector by pull-up resistor, detector detect signal that X ray and high energy particle produce respectively the input end of analog signal by separately be input into circuit;
After the signal input, pass through earlier every value electric capacity, pass through the charge amplifier of high-gain again, signal is amplified, amplifying signal is by behind the RC filtering circuit, after by high speed operation amplifier signal being amplified once more, by differentiating circuit and integrating circuit again, the input follower enters analog switch at last and controls.
3. multichannel low-noise charge sensitive amplifier circuit according to claim 1 system, it is characterized in that: each single channel structure is:
One input end of analog signal connects after connecting charge sensitive amplifier circuit output again after the output of value condenser network, after connecting the output of RC filtering circuit again, after the concatenation operation amplifier circuit amplifies again, after connecting the differentiating circuit signal differentiation again, after connecting the integrating circuit signal integration again, after connecting follower again, connect the analog switch of one 20 road signal common again, a simulating signal control end is connected with analog switch; Analog switch is controlled simulating signal output through its signal controlling end and external microcontroller interactive communication.
4. multichannel low-noise charge sensitive amplifier circuit according to claim 1 and 2 system, it is characterized in that: described multiplex circuit is 20 the tunnel; Input end of analog signal is identical with signal controlling terminal number order, and number is 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200804050U CN201215589Y (en) | 2008-05-07 | 2008-05-07 | Multi-path low noise charge sensitive amplifier circuit system for deep space detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200804050U CN201215589Y (en) | 2008-05-07 | 2008-05-07 | Multi-path low noise charge sensitive amplifier circuit system for deep space detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201215589Y true CN201215589Y (en) | 2009-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200804050U Expired - Fee Related CN201215589Y (en) | 2008-05-07 | 2008-05-07 | Multi-path low noise charge sensitive amplifier circuit system for deep space detection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102857193A (en) * | 2012-08-27 | 2013-01-02 | 北京瑞利分析仪器有限公司 | Multichannel integral circuit module, multichannel circuit module group and spectrometer |
| CN103279049A (en) * | 2013-06-17 | 2013-09-04 | 成都荣耀科技有限公司 | Circuit amplifying collected signal and arranged in transformer substation air conditioner intelligent control system |
| CN112468149A (en) * | 2020-11-10 | 2021-03-09 | 上海航天控制技术研究所 | Device for inhibiting fluctuation of switching output signals of channels of multi-channel selector |
-
2008
- 2008-05-07 CN CNU2008200804050U patent/CN201215589Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102857193A (en) * | 2012-08-27 | 2013-01-02 | 北京瑞利分析仪器有限公司 | Multichannel integral circuit module, multichannel circuit module group and spectrometer |
| CN103279049A (en) * | 2013-06-17 | 2013-09-04 | 成都荣耀科技有限公司 | Circuit amplifying collected signal and arranged in transformer substation air conditioner intelligent control system |
| CN112468149A (en) * | 2020-11-10 | 2021-03-09 | 上海航天控制技术研究所 | Device for inhibiting fluctuation of switching output signals of channels of multi-channel selector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090401 Termination date: 20140507 |