CN207603616U - Tiny signal collector - Google Patents
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- CN207603616U CN207603616U CN201721742870.1U CN201721742870U CN207603616U CN 207603616 U CN207603616 U CN 207603616U CN 201721742870 U CN201721742870 U CN 201721742870U CN 207603616 U CN207603616 U CN 207603616U
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Abstract
The utility model is related to a kind of tiny signal collectors.The tiny signal collector, including：First order amplifier unit, second level amplifier unit, third level amplifier unit, voltage follow unit and microcontroller.The tiny signal collector first can carry out voltage bias processing to the tiny signal；Then first order signal enhanced processing is carried out, and first order low-pass filtering treatment is carried out while first order signal processing, again second level signal enhanced processing is carried out after the first high-pass filtering processing, and second level low-pass filtering treatment is carried out while the signal processing of the second level, third level signal enhanced processing is carried out after the second high-pass filtering processing again, AD collection voltages follow that treated signal.Amplified by multilevel signal, can be very good to control the best magnification of every level-one amplifier after the processing such as multiple-stage filtering and voltage follow, improve signal-to-noise ratio to the full extent；And it can realize dynamic control amplification factor in a manner that dynamic adjusts resistance value.
Description
Technical field
The utility model is related to data acquisition technology field more particularly to a kind of tiny signal collectors.
Background technology
The core of tiny signal acquisition technique is signal amplification, at present acquisition of the major part data collector to tiny signal
All it is directly to carry out AD acquisitions by way of one stage signal amplification and after corresponding filtering process.
Such method there are the defects of it is more：
One is that resolution ratio is inadequate if amplification factor is too small, if the excessive electricity that can be acquired more than AD of amplification factor
Press range；
One be amplifier chip amplification factor it is limited, if amplification factor about close to the full scale amplification factor of chip,
Noise after then amplifying is excessive, directly affects the signal-to-noise ratio of signal after amplification；
In addition, different sensor signals is inconsistent, need the multiple amplified also inconsistent, such method can not be adjusted automatically
Whole amplification factor can only adjust amplification factor by manually changing resistance value, largely reduce the operable of equipment
Property.
Utility model content
(1) technical problems to be solved
In order to preferably adjust amplification factor, the utility model provides a kind of tiny signal collector, including：The first order is transported
Put unit, second level amplifier unit, third level amplifier unit, voltage follow unit and microcontroller.The tiny signal collector can
First to carry out voltage bias processing to the tiny signal；Then first order signal enhanced processing is carried out, and in first order signal
First order low-pass filtering treatment is carried out while processing, then is carried out at the signal amplification of the second level after the first high-pass filtering processing
Reason, and second level low-pass filtering treatment is carried out while the signal processing of the second level, then carried out after the second high-pass filtering processing
Third level signal enhanced processing, AD collection voltages follow that treated signal.Amplified by multilevel signal, multiple-stage filtering and electricity
Pressure can be very good to control the best magnification of every level-one amplifier after the processing such as following, and improve signal-to-noise ratio to the full extent；And
And it can realize dynamic control amplification factor in a manner that dynamic adjusts resistance value.
(2) technical solution
In order to achieve the above object, the main technical schemes that the utility model uses include：
A kind of tiny signal collector, the tiny signal collector include：First order amplifier unit, second level amplifier list
Member, third level amplifier unit, voltage follow unit and microcontroller；
The first order amplifier unit be used for tiny signal carry out voltage bias processing, to voltage bias treated letter
Number first order signal enhanced processing is carried out, and first order low-pass filtering treatment is carried out while first order signal processing, to the
Signal after one stage signal enhanced processing and first order low-pass filtering treatment carries out the first high-pass filtering processing；
The second level amplifier unit is used to put the signal progress second level signal that the first order amplifier unit exports
Big processing, and second level low-pass filtering treatment is carried out while the signal processing of the second level, to second level signal enhanced processing and
Signal after the low-pass filtering treatment of the second level carries out the second high-pass filtering processing；
The third level amplifier unit is used to put the signal progress third level signal that the second level amplifier unit exports
Big processing；
The voltage follow unit is used to carry out voltage follow processing to the signal that the third level amplifier unit exports；
The microcontroller is used to carry out AD acquisitions to the signal that the voltage follow unit exports.
Optionally, the first order amplifier unit, including：First order amplifier input resistance (1), first order amplifier feedback electricity
It hinders (2), the first compensating electric capacity (3), first order amplifier (14), power cathode (15), the first filter capacitor (16), the first amplifier is inclined
Voltage (17) is put, initial tiny signal inputs (18)；
Increase by first compensating electric capacity (3) on the first order amplifier feedback resistance (2), for low-pass filtering, filtering
High-frequency noise.
Optionally, the first order amplifier (14) is for being amplified bias voltage processing, the first order amplifier
(14) the first amplification factor is G1=RA3/RA2；
Wherein, RA2 is the resistance value of first order amplifier input resistance (1), and RA3 is the resistance of first order amplifier feedback resistance (2)
Value.
Optionally, the first amplifier bias voltage (17) is REF1V65, and the first amplifier bias voltage (17) is used for
Signal is biased to 0V~AV3V3.
Optionally, the second level amplifier unit, including：First coupled capacitor (4), second level amplifier input resistance (5),
Amplifier power supply anode (6), the second filter capacitor (7), second level amplifier feedback resistance (8), the second compensating electric capacity (9), the second level
Amplifier exports (10), second level amplifier (11), third filter capacitor (12), the second amplifier bias voltage (13)；
Increase by first coupled capacitor (4) and the second level amplifier on the signal of the first order amplifier unit output
Input resistance (5) filters for low-frequency noise；
Increase by second compensating electric capacity (9) on the second level amplifier feedback resistance (8), for low-pass filtering；
Second amplification factor of the second level amplifier (11) is G2=RA5/RA4；
The second level amplifier exports (10) for exporting the signal after the signal enhanced processing of the second level；
Wherein, RA4 is the resistance value of second level amplifier input resistance (5), and RA5 is the resistance of second level amplifier feedback resistance (8)
Value.
Optionally, the third level amplifier unit, including：First signal inputs (21), the second coupled capacitor (22), third
Grade amplifier input resistance (23), third amplifier bias voltage (24), third level amplifier feedback resistance (25), third level amplifier
(26), amplifier feedback resistance output terminal and signal output end (27), digital regulation resistance positive pole (28), digital regulation resistance power supply
Cathode (29), digital regulation resistance clock line (30), digital regulation resistance (31), digital regulation resistance data/address bus (32).
Optionally, the third amplification factor of the third level amplifier (26) is G3=(VERSB+ VRESW)/RA6；
Wherein, RA6 is the resistance value of third level amplifier input resistance (23), and VERSB is third level amplifier feedback resistance (25)
Resistance value, VRESW is the output of amplifier feedback resistance output terminal and signal output end (27).
Optionally, the voltage follow unit, including：Second signal inputs (41), power supply follower (42), voltage follow
Device positive polarity (43), the 4th filter capacitor (44), voltage follower power supply cathode (45), signal output (46).
Optionally, the microcontroller, including：I2C clock lines (51), I2C data/address bus (52), reference voltage (53), the
One divider resistance (54), AD signals input (55), the second divider resistance (56), microcontroller (57), microcontroller power supply anode (58),
Microcontroller power supply cathode (59), monolithic processor resetting pin (60) reset pull-up resistor (61), microcontroller PDI emulation interfaces
(62)。
Optionally, the VERSB and VRESW is by the digital regulation resistance clock line (30), microcontroller (57),
Digital regulation resistance (31), digital regulation resistance data/address bus (32) change.
(3) advantageous effect
The beneficial effects of the utility model are：Tiny signal collector includes first order amplifier unit, second level amplifier list
Member, third level amplifier unit, voltage follow unit and microcontroller.The tiny signal collector can first to the tiny signal into
The processing of row voltage bias；Then first order signal enhanced processing is carried out, and the first order is carried out while first order signal processing
Low-pass filtering treatment, then second level signal enhanced processing is carried out, and in second level signal processing after the first high-pass filtering processing
While carry out second level low-pass filtering treatment, then through the second high-pass filtering processing after carry out third level signal enhanced processing, AD
Collection voltages follow that treated signal.Amplified by multilevel signal, can be fine after the processing such as multiple-stage filtering and voltage follow
Best magnification of the control per level-one amplifier, improve signal-to-noise ratio to the full extent；And resistance value is adjusted by dynamic
Mode can realize dynamic control amplification factor.
Description of the drawings
Fig. 1 is a kind of first order of tiny signal collector, the second level amplifier that the utility model one embodiment provides
Schematic diagram；
Fig. 2 is the third level amplifier schematic diagram of a kind of tiny signal collector that the utility model one embodiment provides；
Fig. 3 is the voltage follow schematic diagram of a kind of tiny signal collector that the utility model one embodiment provides；
Fig. 4 is the Fundamentals of Mono-Chip Computers figure of a kind of tiny signal collector that the utility model one embodiment provides.
Specific embodiment
It is below in conjunction with the accompanying drawings, right by specific embodiment in order to understand in order to preferably explain the utility model
The utility model is described in detail.
Current major part data collector is all by way of one stage signal amplification to the acquisition of tiny signal and correspondence
Filtering process after directly carry out AD acquisitions.But different sensor signals is inconsistent, needs the multiple amplified also inconsistent, this
Kind of method can not adjust automatically amplification factor, amplification factor can only be adjusted by manually changing resistance value, largely dropped
The low operability of equipment.
In order to preferably adjust amplification factor, the utility model provides a kind of tiny signal collector, including：The first order is transported
Put unit, second level amplifier unit, third level amplifier unit, voltage follow unit and microcontroller.The tiny signal collector can
First to carry out voltage bias processing to the tiny signal；Then first order signal enhanced processing is carried out, and in first order signal
First order low-pass filtering treatment is carried out while processing, then is carried out at the signal amplification of the second level after the first high-pass filtering processing
Reason, and second level low-pass filtering treatment is carried out while the signal processing of the second level, then carried out after the second high-pass filtering processing
Third level signal enhanced processing, AD collection voltages follow that treated signal.Amplified by multilevel signal, multiple-stage filtering and electricity
Pressure can be very good to control the best magnification of every level-one amplifier after the processing such as following, and improve signal-to-noise ratio to the full extent；And
And it can realize dynamic control amplification factor in a manner that dynamic adjusts resistance value.
The present embodiment provides a kind of tiny signal collector, which includes：First order amplifier unit, the
Two level amplifier unit, third level amplifier unit, voltage follow unit and microcontroller.
1st, first order amplifier unit
1) first order amplifier unit is used to carry out voltage bias processing to tiny signal, to voltage bias treated signal
First order signal enhanced processing is carried out, and first order low-pass filtering treatment is carried out while first order signal processing, to first
Signal after grade signal enhanced processing and first order low-pass filtering treatment carries out the first high-pass filtering processing.
2) first order amplifier unit, including：First order amplifier input resistance (1), first order amplifier feedback resistance (2), the
One compensating electric capacity (3), first order amplifier (14), power cathode (15), the first filter capacitor (16), the first amplifier bias voltage
(17), initial tiny signal input (18).
Increase the first compensating electric capacity (3) on first order amplifier feedback resistance (2), for low-pass filtering, filter high frequency noise.
First amplifier bias voltage (17) is REF1V65, and the first amplifier bias voltage (17) by signal for being biased to 0V
~AV3V3.
First order amplifier (14) is for being amplified bias voltage processing, the first times magnification of first order amplifier (14)
Number is G1=RA3/RA2.
Wherein, RA2 is the resistance value of first order amplifier input resistance (1), and RA3 is the resistance of first order amplifier feedback resistance (2)
Value.
2nd, second level amplifier unit
1) amplifier unit in the second level is used to carry out second level signal enhanced processing to the signal that first order amplifier unit exports,
And second level low-pass filtering treatment is carried out while the signal processing of the second level, it is low to second level signal enhanced processing and the second level
Pass filter treated signal carries out the second high-pass filtering processing.
2) second level amplifier unit, including：First coupled capacitor (4), second level amplifier input resistance (5), amplifier power supply
Anode (6), the second filter capacitor (7), second level amplifier feedback resistance (8), the second compensating electric capacity (9), the output of second level amplifier
(10), second level amplifier (11), third filter capacitor (12), the second amplifier bias voltage (13).
Increase the first coupled capacitor (4) and second level amplifier input resistance (5) on the signal of first order amplifier unit output,
It is filtered for low-frequency noise.
Increase the second compensating electric capacity (9) on second level amplifier feedback resistance (8), for low-pass filtering.
Second amplification factor of second level amplifier (11) is G2=RA5/RA4.
Second level amplifier exports (10) for exporting the signal after the signal enhanced processing of the second level.
Wherein, RA4 is the resistance value of second level amplifier input resistance (5), and RA5 is the resistance of second level amplifier feedback resistance (8)
Value.
For example, with reference to the first order shown in FIG. 1, second level amplifier schematic diagram, which includes：First order amplifier input electricity
It hinders (1), first order amplifier feedback resistance (2), the first compensating electric capacity (3), the first coupled capacitor (4), second level amplifier input electricity
It hinders (5), amplifier power supply anode (6), the second filter capacitor (7), second level amplifier feedback resistance (8), the second compensating electric capacity
(9), second level amplifier output (10), second level amplifier (11), third filter capacitor (12), the second amplifier bias voltage (13),
First order amplifier (14), power cathode (15), the first filter capacitor (16), the first amplifier bias voltage (17), initial small letter
Number input (18).
After tiny signal inputs the SignalIn inputs of (18) by initial tiny signal, the biasing of the first amplifier is first passed through
The REF1V65 of voltage (17) carries out voltage bias, and between signal is biased to 0V~AV3V3, while bias voltage increases over the ground
First filter capacitor (16) is to increase stability.
Enter first order amplifier (14) after bias voltage, to carry out first order signal amplification, wherein amplification factor G1 is by the
The RA2 of level-one amplifier input resistance (1) and the RA3 of first order amplifier feedback resistance (2) are determined：G1=RA3/RA2.
The RA3 of first order amplifier feedback resistance (2) increases compensating electric capacity CA3 (first compensating electric capacity in Fig. 1
(3)), play the role of low-pass filtering, high-frequency noise is filtered.
The amplification output of first order signal increases high-pass filtering CA4 (the first coupled capacitor (4) in Fig. 1), RA4 (in Fig. 1
Second level amplifier input resistance (5)), low-frequency noise is filtered；Enter second level amplifier (11) later and carry out second level signal
Amplification, second level signal amplification factor G2 is by the RA4 of second level amplifier input resistance (5) and second level amplifier feedback resistance (8)
RA5 determine：G2=RA5/RA4.
The RA5 of second level amplifier feedback resistance (8) increases compensating electric capacity CA5 (second compensating electric capacity in Fig. 1
(9)), low-pass filtering, the signal V1 after finally output two-stage signal is amplified pass through second level amplifier and export (10) again.
3rd, third level amplifier unit
1) third level amplifier unit is used to carry out third level signal enhanced processing to the signal that second level amplifier unit exports.
2) third level amplifier unit, including：First signal inputs (21), the second coupled capacitor (22), and third level amplifier is defeated
Enter resistance (23), third amplifier bias voltage (24), third level amplifier feedback resistance (25), third level amplifier (26), amplifier is anti-
Feed resistance output terminal and signal output end (27), digital regulation resistance positive pole (28), digital regulation resistance power cathode (29),
Digital regulation resistance clock line (30), digital regulation resistance (31), digital regulation resistance data/address bus (32).
The third amplification factor of third level amplifier (26) is G3=(VERSB+VRESW)/RA6.
Wherein, RA6 is the resistance value of third level amplifier input resistance (23), and VERSB is third level amplifier feedback resistance (25)
Resistance value, VRESW is the output of amplifier feedback resistance output terminal and signal output end (27).
For example, with reference to third level amplifier schematic diagram shown in Fig. 2, the signal V1 after the amplifier of the second level is defeated from two level amplifier
After going out (10), high pass filter is carried out again by the CA5 of the second coupled capacitor (22) and the RA6 of third level amplifier input resistance (23)
Wave.
Then, third level signal amplification is carried out into third level amplifier (26), G3 is by third for third level signal amplification factor
The RA6 and the VRESB of third level amplifier feedback resistance (25) of grade amplifier input resistance (23), amplifier feedback resistance output terminal and
The VRESW of signal output end (27) is determined：G3=(VERSB+VRESW)/RA6.
4th, voltage follow unit
1) voltage follow unit is used to carry out voltage follow processing to the signal that third level amplifier unit exports.
2) pressure follows unit, including：Second signal inputs (41), power supply follower (42), voltage follower positive polarity
(43), the 4th filter capacitor (44), voltage follower power supply cathode (45), signal output (46).
For example, voltage follow schematic diagram shown in Fig. 3, signal after three-level is amplified, increase power supply follower (42) into
Row voltage follow, it is ensured that without departing from the AD measurement ranges of microcontroller after signal amplification, while increase the driving energy of signal
Power, so that the numerical stability of AD acquisitions is reliable.
5th, microcontroller
1) microcontroller is used to carry out AD acquisitions to the signal that voltage follow unit exports.
2) microcontroller, including：I2C clock lines (51), I2C data/address bus (52), reference voltage (53), the first divider resistance
(54), AD signals input (55), the second divider resistance (56), microcontroller (57), microcontroller power supply anode (58), monolithic are electromechanical
Source cathode (59), monolithic processor resetting pin (60) reset pull-up resistor (61), microcontroller PDI emulation interfaces (62).
For example, Fundamentals of Mono-Chip Computers figure shown in Fig. 4, by voltage follow, treated that final signal is exported by signal
(46), AD acquisitions are carried out into microcontroller by AD signals input (55).
In addition, because different sensor signal values differs greatly, if unified use a kind of amplification factor, can not obtain best
Effect, therefore third level amplification factor must be dynamically adjustable, the resistance value for changing third level feedback resistance by dynamic is dynamic to realize
State adjusts the function of amplification factor；The present embodiment use high-accuracy high-resolution digital regulation resistance (31), microcontroller (57) with
The digital regulation resistance clock line (30) of the form control digital regulation resistance of I2C agreements and digital regulation resistance data/address bus (32), from
And change VRESB, amplifier feedback resistance output terminal and the signal output of the third level amplifier feedback resistance (25) of digital regulation resistance
The VRESW of (27), that is, the feedback resistance value of third level amplifier are held, so as to fulfill the amplification factor of third level amplifier is changed.
Tiny signal collector through this embodiment enters the first order after tiny signal can be first passed through to voltage bias
Signal amplifies, while filters high-frequency noise by first order low-pass filtering；Low-frequency noise is filtered after high-pass filtering, into
Enter second level signal amplification, second level low-pass filtering again filters high-frequency noise；Using high-pass filtering by low-frequency noise mistake
Filter is amplified into third level signal, and third level signal amplification factor allows dynamic to adjust, and is flexibly changed by digital regulation resistance and put
Big multiple；Voltage follow is finally entered, to ensure that the signal after amplification filtering process can be measured by Chip Microcomputer A/D.
Furthermore it is possible to flexibly control the amplification factor of tiny signal, no matter amplification factor is high again, it is also ensured that amplifies it
Signal afterwards is within the AD measurement ranges of microcontroller；Signal-to-noise ratio can be largely improved after multistage amplification filtering.
Specifically：
1) ensure that the signal after amplification can really be surveyed：Assuming that there are negative voltages for initial signal, can be led after signal amplification
Negative voltage partial loss is caused, also just can not really measure signal value；Simultaneously, it is ensured that the signal after amplifying may not exceed list
Piece machine AD measurement ranges.
2) in multistage amplification, filtering, noise section can be filtered, while ensure passing through for signal section, improves letter
It makes an uproar ratio.
3) afterbody amplification factor can be controlled flexibly, be widely portable to the sensor of various tiny signals.
Tiny signal collector provided in this embodiment, including：First order amplifier unit, second level amplifier unit, third
Grade amplifier unit, voltage follow unit and microcontroller.The tiny signal collector first can carry out voltage to the tiny signal
Bias treatment；Then first order signal enhanced processing is carried out, and first order low pass filtered is carried out while first order signal processing
Wave processing, then second level signal enhanced processing is carried out, and while the signal processing of the second level after the first high-pass filtering processing
Second level low-pass filtering treatment is carried out, then third level signal enhanced processing, AD acquisition electricity are carried out after the second high-pass filtering processing
Pressure follows that treated signal.Amplified by multilevel signal, can be very good to control after the processing such as multiple-stage filtering and voltage follow
Per the best magnification of level-one amplifier, signal-to-noise ratio is improved to the full extent；It and can in a manner that dynamic adjusts resistance value
To realize dynamic control amplification factor.
It should be clear that the utility model is not limited to specific configuration described above and shown in figure and place
Reason.For brevity, it is omitted here the detailed description to known method.In the above-described embodiments, if having been described and illustrated
Dry specific step is as example.Those skilled in the art can make various change after the spirit of the utility model is understood
Become, modification and addition.
Finally it should be noted that：Above-described each embodiment be merely to illustrate the technical solution of the utility model rather than
It is limited；Although the utility model is described in detail with reference to the foregoing embodiments, those of ordinary skill in the art
It should be understood that：It can still modify to the technical solution recorded in previous embodiment or to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or substitutions, it does not separate the essence of the corresponding technical solution the utility model
The range of each embodiment technical solution.
Claims (10)
1. a kind of tiny signal collector, which is characterized in that the tiny signal collector includes：First order amplifier unit, the
Two level amplifier unit, third level amplifier unit, voltage follow unit and microcontroller；
The first order amplifier unit is used to carry out voltage bias processing to tiny signal, to voltage bias treated signal into
Row first order signal enhanced processing, and first order low-pass filtering treatment is carried out while first order signal processing, to the first order
Signal after signal enhanced processing and first order low-pass filtering treatment carries out the first high-pass filtering processing；
The second level amplifier unit is used to carry out at the signal amplification of the second level signal that the first order amplifier unit exports
Reason, and second level low-pass filtering treatment is carried out while the signal processing of the second level, to second level signal enhanced processing and second
Signal after grade low-pass filtering treatment carries out the second high-pass filtering processing；
The third level amplifier unit is used to carry out at the third level signal amplification signal that the second level amplifier unit exports
Reason；
The voltage follow unit is used to carry out voltage follow processing to the signal that the third level amplifier unit exports；
The microcontroller is used to carry out AD acquisitions to the signal that the voltage follow unit exports.
2. tiny signal collector according to claim 1, which is characterized in that the first order amplifier unit, including：The
Level-one amplifier input resistance (1), first order amplifier feedback resistance (2), the first compensating electric capacity (3), first order amplifier (14), power supply
Cathode (15), the first filter capacitor (16), the first amplifier bias voltage (17), initial tiny signal input (18)；
Increase by first compensating electric capacity (3) on the first order amplifier feedback resistance (2), for low-pass filtering, filter high-frequency
Noise.
3. tiny signal collector according to claim 2, which is characterized in that the first order amplifier (14) is for inclined
It puts voltage and is amplified processing, the first amplification factor of the first order amplifier (14) is G1=RA3/RA2；
Wherein, RA2 is the resistance value of first order amplifier input resistance (1), and RA3 is the resistance value of first order amplifier feedback resistance (2).
4. tiny signal collector according to claim 2, which is characterized in that the first amplifier bias voltage (17) is
REF1V65, the first amplifier bias voltage (17) by signal for being biased to 0V~AV3V3.
5. tiny signal collector according to claim 1, which is characterized in that the second level amplifier unit, including：The
One coupled capacitor (4), second level amplifier input resistance (5), amplifier power supply anode (6), the second filter capacitor (7), second level fortune
Put feedback resistance (8), the second compensating electric capacity (9), second level amplifier output (10), second level amplifier (11), third filter capacitor
(12), the second amplifier bias voltage (13)；
Increase by first coupled capacitor (4) and second level amplifier input on the signal of the first order amplifier unit output
Resistance (5) filters for low-frequency noise；
Increase by second compensating electric capacity (9) on the second level amplifier feedback resistance (8), for low-pass filtering；
Second amplification factor of the second level amplifier (11) is G2=RA5/RA4；
The second level amplifier exports (10) for exporting the signal after the signal enhanced processing of the second level；
Wherein, RA4 is the resistance value of second level amplifier input resistance (5), and RA5 is the resistance value of second level amplifier feedback resistance (8).
6. tiny signal collector according to claim 1, which is characterized in that the third level amplifier unit, including：The
One signal inputs (21), the second coupled capacitor (22), third level amplifier input resistance (23), third amplifier bias voltage (24),
Third level amplifier feedback resistance (25), third level amplifier (26), amplifier feedback resistance output terminal and signal output end (27), number
Potentiometer positive pole (28), digital regulation resistance power cathode (29), digital regulation resistance clock line (30), digital regulation resistance
(31), digital regulation resistance data/address bus (32).
7. tiny signal collector according to claim 6, which is characterized in that the third of the third level amplifier (26) is put
Big multiple is G3=(VERSB+VRESW)/RA6；
Wherein, RA6 is the resistance value of third level amplifier input resistance (23), and VERSB is the resistance of third level amplifier feedback resistance (25)
Value, VRESW are the output of amplifier feedback resistance output terminal and signal output end (27).
8. tiny signal collector according to claim 1, which is characterized in that the voltage follow unit, including：Second
Signal inputs (41), power supply follower (42), voltage follower positive polarity (43), the 4th filter capacitor (44), voltage follow
Device power supply cathode (45), signal output (46).
9. tiny signal collector according to claim 7, which is characterized in that the microcontroller, including：I2C clock lines
(51), I2C data/address bus (52), reference voltage (53), the first divider resistance (54), AD signals input (55), the second partial pressure electricity
It hinders (56), microcontroller (57), microcontroller power supply anode (58), microcontroller power supply cathode (59), monolithic processor resetting pin (60), it is multiple
Position pull-up resistor (61), microcontroller PDI emulation interfaces (62).
10. tiny signal collector according to claim 9, which is characterized in that the VERSB and the VRESW pass through
The digital regulation resistance clock line (30), microcontroller (57), digital regulation resistance (31), digital regulation resistance data/address bus (32) change
Become.
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| CN201721742870.1U CN207603616U (en) | 2017-12-14 | 2017-12-14 | Tiny signal collector |
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| CN201721742870.1U CN207603616U (en) | 2017-12-14 | 2017-12-14 | Tiny signal collector |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107911120A (en) * | 2017-12-14 | 2018-04-13 | 北京雨根科技有限公司 | Tiny signal acquisition method and tiny signal collector |
| CN110377087A (en) * | 2019-05-24 | 2019-10-25 | 湖南银河电气有限公司 | A kind of amplitude regulation arrangement based on digital regulation resistance |
| CN111307180A (en) * | 2020-04-14 | 2020-06-19 | 国网河南省电力公司信息通信公司 | Method for reducing power supply noise of optical balance receiver for optical cable detection |
| CN115235514A (en) * | 2022-09-26 | 2022-10-25 | 天津大学 | Signal processing method, device and system for angular vibration sensor |
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2017
- 2017-12-14 CN CN201721742870.1U patent/CN207603616U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107911120A (en) * | 2017-12-14 | 2018-04-13 | 北京雨根科技有限公司 | Tiny signal acquisition method and tiny signal collector |
| CN107911120B (en) * | 2017-12-14 | 2023-12-12 | 北京雨根科技有限公司 | Micro signal acquisition method and micro signal acquisition device |
| CN110377087A (en) * | 2019-05-24 | 2019-10-25 | 湖南银河电气有限公司 | A kind of amplitude regulation arrangement based on digital regulation resistance |
| CN111307180A (en) * | 2020-04-14 | 2020-06-19 | 国网河南省电力公司信息通信公司 | Method for reducing power supply noise of optical balance receiver for optical cable detection |
| CN111307180B (en) * | 2020-04-14 | 2021-10-15 | 国网河南省电力公司信息通信公司 | Method for reducing power supply noise of optical balance receiver for optical cable detection |
| CN115235514A (en) * | 2022-09-26 | 2022-10-25 | 天津大学 | Signal processing method, device and system for angular vibration sensor |
| CN115235514B (en) * | 2022-09-26 | 2023-02-03 | 天津大学 | Signal processing method, device and system for angular vibration sensor |
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