CN105162425B - Differential integrator acquisition terminal machine - Google Patents
Differential integrator acquisition terminal machine Download PDFInfo
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- CN105162425B CN105162425B CN201510488186.4A CN201510488186A CN105162425B CN 105162425 B CN105162425 B CN 105162425B CN 201510488186 A CN201510488186 A CN 201510488186A CN 105162425 B CN105162425 B CN 105162425B
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Abstract
The invention discloses differential integrator acquisition terminal machine, including integrator A, integrator B, difference instrument amplifier and wave filter, the integrator A, integrator B and wave filter are both connected on difference instrument amplifier, the Vin1 of input signal all the way signal ends on integrator A are first connected on single-pole double-throw switch (SPDT) S1 fixed end a, single-pole double-throw switch (SPDT) S1 moved end is connected on integrator A, another way input signal Vin2 signal ends on integrator A are first connected on single-pole double-throw switch (SPDT) S2 fixed end a, and single-pole double-throw switch (SPDT) S2 moved end is connected on integrator A；The signal output part of the wave filter is also connected with switching S3 fixed end a, and the moved end for switching S3 is also sequentially connected buffer, switchs S3 fixed end b connection input end of analog signal Vin3 signal ends.The present invention can realize the integral measurement to measured signal by above-mentioned principle, moreover it is possible to analog compensation be carried out to signal condition, skew is small and drift is small.
Description
Technical field
The present invention relates to signal integration fields of measurement, and in particular to differential integrator acquisition terminal machine.
Background technology
People using signal in order to be handled it.For example, it is necessary to be amplified to it when electric signal is small and weak;
, it is necessary to be filtered I when frequency is not suitable for transmission, it is necessary to be modulated and demodulate to it when being mixed with noise;Signal is met
To during distorton, it is necessary to balanced to it;When signal type is many, it is necessary to be identified etc..Signal transacting is exactly in thing
Extraction feature signal in part change procedure, through going to disturb, analyzing, integrating, converting and the processing such as computing, so as to obtain reflection event
The process for the information that change is essential or processor is interested.Imaging signal processing system has been widely used for army in the world today
Thing, industry, high-energy physics, the field such as agricultural and medical treatment.In order to obtain high quality and be easy to the image of observation, it is necessary to original graph
Such as filter as signal carries out front-end processing, amplify function, then measured signal is transferred to host computer.And in this course most
An important step is exactly the integral measurement to measured signal, and requires very high, it is necessary to have very high to the integral measurement of measured signal
Precision, can to signal transacting carry out analog compensation, skew it is small, drift it is small.
The content of the invention
Instant invention overcomes the deficiencies in the prior art, there is provided differential integrator acquisition terminal machine, the device can be realized pair
The integral measurement of measured signal, moreover it is possible to analog compensation is carried out to signal condition, skew is small and drift is small.
To solve above-mentioned technical problem, the present invention uses following technical scheme：Differential integrator acquisition terminal machine, including
Integrator A, integrator B, difference instrument amplifier and wave filter, the integrator A, integrator B and wave filter are both connected to difference
Divide on instrument amplifier, the Vin1 of the input signal all the way signal ends on integrator A first connect single-pole double-throw switch (SPDT) S1 fixed end a
On, single-pole double-throw switch (SPDT) S1 moved end is connected on integrator A, the another way input signal Vin2 signal ends on integrator A
On the fixed end a for first connecting single-pole double-throw switch (SPDT) S2, single-pole double-throw switch (SPDT) S2 moved end is connected on integrator A；The wave filter
Signal output part be also connected with switching S3 port a, the port c for switching S3 is also sequentially connected buffer, go back panel connector and
Electric capacity charge/discharge control circuit, electric capacity charge/discharge control circuit are also connected with integrator A, go back panel connector also while connect integrator A
With integrator B, S3 port b connection input end of analog signal Vin3 signal ends are switched.Switch S3 can access two-way letter simultaneously
Number give buffer.After single-pole double-throw switch (SPDT) S1 moved end is connected with fixed end a, the advanced integrator A that becomes owner of of input signal is accumulated
After partite transport is calculated, signal passes to difference instrument amplifier successively and wave filter be amplified with after filtering process by integrating analog
Signal output also enters to buffer and goes backboard to connect together to the analog signal Vin3 of buffer input component demarcation
Device, signal is passed into electric capacity charge/discharge control circuit, integrator A and integrator B, electric capacity electric discharge control simultaneously by back panel connector
Signal after processing of circuit processed passes to integrator A again, and integrator A passes to difference instrument amplifier again, while integrator B is produced
Raw analog compensation signal is also passed to after difference instrument amplifier is amplified effect, and high accuracy is exported after filtered device filtering
Measured signal imitated output quantity.The simulation for setting integrator B to be used for the signal condition of measured signal in the apparatus is mended
Repay, measured signal is offset during difference integration, small, drift is small, and the measurement accuracy of each device is high, while again by amplification
After filter action, so as to export high-precision integral measurement result.The differential amplifier used in the present apparatus has superelevation defeated
Enter impedance, extremely good CMRR, low input offset, low output impedance, those signals under common-mode voltage can be amplified, so as to
Improve the accuracy of measured signal integral measurement result.
It is described to go back panel connector to be also connected with capture card.Capture card can gathered data information, carry out digital compensation, there is provided
The indexs such as sampling time, acquisition precision and the zero migration of data acquisition.
The fixed end b and single-pole double-throw switch (SPDT) S2 of the single-pole double-throw switch (SPDT) S1 fixed end b are grounded.Quilt need not accessed
When surveying signal, the moved end of single-pole double-throw switch (SPDT) is then grounded.
Input signal Vin1 signal ends and input signal Vin2 signal ends are inputted using SMB coaxial cables.Support high bandwidth
Communication, to adapt to the integral measurement requirement of the neutron imaging signal in high-energy physics field.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the present apparatus can realize the integral measurement structure to measured signal, and integrator B is used for the letter to measured signal
The analog compensation of number conditioning, measured signal is offset during difference integration, small, drift is small, and the measurement accuracy of each device is high,
Simultaneously again after amplification and filter action, so as to export high-precision integral measurement result.
2nd, the differential amplifier used in the present apparatus has a ultra-high input impedance, extremely good CMRR, low input offset,
Low output impedance, those signals under common-mode voltage can be amplified, so as to improve the accuracy of measured signal integral measurement result.
Brief description of the drawings
Fig. 1 is the theory diagram of the present invention.
Embodiment
The present invention is further elaborated below in conjunction with the accompanying drawings, embodiments of the invention not limited to this.
Embodiment 1：
As shown in figure 1, the present invention includes integrator A, integrator B, difference instrument amplifier and wave filter, the integrator
A, integrator B and wave filter are both connected on difference instrument amplifier, the Vin1 signal ends of input signal all the way on integrator A
On the fixed end a for first connecting single-pole double-throw switch (SPDT) S1, single-pole double-throw switch (SPDT) S1 moved end is connected on integrator A, on integrator A
Another way input signal Vin2 signal ends first connect on single-pole double-throw switch (SPDT) S2 fixed end a, single-pole double-throw switch (SPDT) S2 moved end
It is connected on integrator A；The signal output part of the wave filter is also connected with single-pole double-throw switch (SPDT) S3 port a, and single-pole double throw is opened
The port c for closing S3 is also sequentially connected buffer, removes back panel connector and electric capacity charge/discharge control circuit, and electric capacity charge/discharge control circuit is also
Integrator A is connected, goes back panel connector also while connects integrator A and integrator B, single-pole double-throw switch (SPDT) S3 port b connections
Input end of analog signal Vin3 signal ends.
Switch S3 can access two paths of signals simultaneously to buffer.When single-pole double-throw switch (SPDT) S1 moved end is connected with fixed end a
Afterwards, input signal it is advanced become owner of integrator A carry out integral operation after, signal is passed to difference instrument amplifier and filtering successively
Device be amplified with after filtering process by integrating analog signal output to buffer, while also to buffer input component demarcation
Analog signal Vin3 together enter remove back panel connector, by back panel connector by signal simultaneously pass to electric capacity control of discharge
Circuit, integrator A and integrator B, the signal after the processing of electric capacity charge/discharge control circuit pass to integrator A again, and integrator A is passed again
Difference instrument amplifier is passed, while analog compensation signal caused by integrator B is also passed to difference instrument amplifier and put
After big effect, the imitated output quantity of high-precision measured signal is exported after filtered device filtering.Integrator B is set in the apparatus
For the analog compensation of the signal condition to measured signal, measured signal is offset during difference integration, small, drift is small, respectively
The measurement accuracy of device is high, while again after amplification and filter action, so as to export high-precision integral measurement result.This dress
Putting the middle differential amplifier used has ultra-high input impedance, extremely good CMRR, low input offset, low output impedance, energy
Amplify those signals under common-mode voltage, so as to improve the accuracy of measured signal integral measurement result.
Embodiment 2：
The present embodiment is preferably as follows on the basis of embodiment 1：Back panel connector is gone to be also connected with capture card.Capture card can
Gathered data information, carry out digital compensation, there is provided the index such as sampling time, acquisition precision and zero migration of data acquisition.
The fixed end b and single-pole double-throw switch (SPDT) S2 of the single-pole double-throw switch (SPDT) S1 fixed end b are grounded.Quilt need not accessed
When surveying signal, the moved end of single-pole double-throw switch (SPDT) is then grounded.
Input signal Vin1 signal ends and input signal Vin2 signal ends are inputted using SMB coaxial cables.Support high bandwidth
Communication, to adapt to the integral measurement requirement of the neutron imaging signal in high-energy physics field.
The invention can be realized as described above.
Claims (2)
1. differential integrator acquisition terminal machine, it is characterised in that：Including integrator A, integrator B, difference instrument amplifier and filter
Ripple device, the integrator A, integrator B and wave filter are both connected on difference instrument amplifier, defeated all the way on integrator A
Enter signal Vin1 signal ends first to connect on single-pole double-throw switch (SPDT) S1 fixed end a, single-pole double-throw switch (SPDT) S1 moved end is connected to integration
On device A, the another way input signal Vin2 signal ends on integrator A are first connected on single-pole double-throw switch (SPDT) S2 fixed end a, hilted broadsword
Commutator S2 moved end is connected on integrator A；The signal output part of the wave filter is also connected with switching S3 port a, opens
The port c for closing S3 is also sequentially connected buffer, removes back panel connector and electric capacity charge/discharge control circuit, and electric capacity charge/discharge control circuit is also
Integrator A is connected, goes back panel connector also while connects integrator A and integrator B, switch S3 port b connection analog signals
Input Vin3 signal ends；It is described to go back panel connector to be also connected with capture card；Input signal Vin1 signal ends and input signal
Vin2 signal ends are inputted using SMB coaxial cables.
2. differential integrator acquisition terminal machine according to claim 1, it is characterised in that：The single-pole double-throw switch (SPDT) S1's
Fixed end b and single-pole double-throw switch (SPDT) S2 fixed end b is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510488186.4A CN105162425B (en) | 2015-08-11 | 2015-08-11 | Differential integrator acquisition terminal machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510488186.4A CN105162425B (en) | 2015-08-11 | 2015-08-11 | Differential integrator acquisition terminal machine |
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| CN105162425A CN105162425A (en) | 2015-12-16 |
| CN105162425B true CN105162425B (en) | 2018-01-30 |
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| CN106018865B (en) * | 2016-07-08 | 2018-12-21 | 北京天际翔达科技有限公司 | Fully differential signal conditioning circuit applied to current excitation sensor |
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Effective date of registration: 20190227 Address after: 610000 No. 10, 2 2, 88 Jiao Zi Road, Chengdu high tech Zone, Sichuan. Patentee after: Sichuan Xingzhi Zhihui Intellectual Property Operation Co.,Ltd. Address before: 610000 No. 22 Xinwen Road, Chengdu High-tech Zone, Sichuan Province Patentee before: CHENGDU SIBANGLIKE TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20230310 Address after: No. 147, Qingjiang Middle Road, Qingbaijiang District, Chengdu, Sichuan 610000 (in Chengdu Europe Entrepreneurship Yard) Patentee after: Chengdu Zhirong Zhichuang Intellectual Property Operation Co.,Ltd. Address before: 610000 No. 10, 2 2, 88 Jiao Zi Road, Chengdu high tech Zone, Sichuan. Patentee before: Sichuan Xingzhi Zhihui Intellectual Property Operation Co.,Ltd. |