CN206497161U - A kind of battery-powered signal acquisition circuit of single-lithium-battery - Google Patents
A kind of battery-powered signal acquisition circuit of single-lithium-battery Download PDFInfo
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- CN206497161U CN206497161U CN201621459879.7U CN201621459879U CN206497161U CN 206497161 U CN206497161 U CN 206497161U CN 201621459879 U CN201621459879 U CN 201621459879U CN 206497161 U CN206497161 U CN 206497161U
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- Prior art keywords
- lithium battery
- connection
- circuit
- battery
- analog
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 54
- 239000003381 stabilizer Substances 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000003750 conditioning effect Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 1
- 108091000080 Phosphotransferase Proteins 0.000 description 1
- 102000001253 Protein Kinase Human genes 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 102000020233 phosphotransferase Human genes 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 108060006633 protein kinase Proteins 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
The utility model is related to a kind of battery-powered signal acquisition circuit of single-lithium-battery, belongs to electricity field, and industry is monitored applied to structure safety and Health.It includes sensor, analog switch, ratio attenuator, I/V converters, integrator, instrument amplifier, frequency overlapped-resistable filter, analog-digital converter, microcontroller, USB interface, lithium battery, LDO voltage stabilizer, common-mode voltage output module, single lithium battery charging circuit, lithium battery voltage sample circuit；The utility model passes through on center voltage that signal condition to power supply is powered, that is common-mode voltage, realize the single supply signal transacting of single lithium battery, considerably reduce the complexity of circuit and the power consumption of system, so as to reduce design difficulty and cost, realize that low-power consumption and ting model provide feasible program for measuring apparatus.
Description
Technical field
The utility model is related to a kind of battery-powered signal acquisition circuit of single-lithium-battery, belongs to electricity field, applied to knot
Structure safety and Health monitors industry.
Background technology
Prior art：Current signal collecting device, either multi-Channels Data Acquisition or Portable data acquisition instrument,
Internal signal modulate circuit typically all uses dual power supply to meet the measurement dynamic range of maximum.Although dual power supply is supplied
Electricity may bring certain performance advantage, such as the index such as measurement range and signal to noise ratio, but in order to realize dual power supply,
It can then bring that complex circuit designs, circuit are bulky, power consumption is high, need to use DCDC devices to introduce ripple and noise etc., with
Current signal acquisition circuit develops towards ting model, low-power consumption, inexpensive direction to run in the opposite direction.
The content of the invention
The purpose of this utility model is to provide a kind of single-lithium-battery battery-powered signal acquisition circuit, it is only necessary to single-unit lithium
Battery can meet the measurement of most of industrial signal, can meet measurement under conditions of low cost, low-power consumption, small size
It is required that.
The utility model to achieve these goals, is adopted the following technical scheme that：
A kind of battery-powered signal acquisition circuit of single-lithium-battery, it includes sensor, analog switch, ratio attenuator, I/V
Converter, integrator, instrument amplifier, frequency overlapped-resistable filter, analog-digital converter, microcontroller, USB interface, lithium battery, LDO
Voltage-stablizer, common-mode voltage output module, single lithium battery charging circuit, lithium battery voltage sample circuit；
Sensor is connected with ratio attenuator, I/V converters, integrator respectively by analog switch；
Ratio attenuator, I/V converters, integrator are connected by analog switch with instrument amplifier, instrument amplifier with
Frequency overlapped-resistable filter is connected, and frequency overlapped-resistable filter is connected with analog-digital converter, and analog-digital converter is connected with microcontroller；
Microcontroller is connected with analog switch, single lithium battery charging circuit, USB interface respectively, USB interface and single-unit lithium
Battery charger is connected；
Single lithium battery charging circuit is connected with lithium battery, and lithium battery is connected with lithium battery voltage sample circuit, lithium battery
It is connected with LDO voltage stabilizer, LDO voltage stabilizer is connected with mode voltage output module；Mode voltage output module is connected with analog-digital converter.
Lithium battery is the function mould in whole signal chains by common-mode voltage output module after LDO voltage stabilizer voltage stabilizing
Block ratio attenuator, I/V converters, integrator, instrument amplifier, frequency overlapped-resistable filter, analog-digital converter provide quiescent operation
Point so that system can be operated under single supply condition of power supply.
The signal of sensor output, is switched by analog switch, in conditioning to corresponding functional circuit.
USB interface is that lithium battery is charged by single lithium battery charging circuit.
Lithium battery voltage sample circuit is sampled to lithium battery, and be acquired by analog-digital converter be then forwarded to it is micro-
Controller obtains system charge value.
Ratio attenuator, I/V converters, integrator, instrument amplifier, frequency overlapped-resistable filter are by common-mode voltage output module
Quiescent operation voltage is provided.
The utility model realization principle：This circuit is by power management module, signal handover module, Signal-regulated kinase, letter
Four modules compositions of number measurement module.
（1）Power management module：Single lithium battery provides charging current by single lithium battery special charging chip first, uses
In when battery electric quantity is low, to lithium battery power supply；The output of lithium battery connects a LDO voltage stabilizing chip, for microcontroller
Power supply is provided with analog circuit, is isolated wherein being powered to numerical portion and analog portion by a magnetic bead, to reduce digital section
Divide the interference to analog portion；Lithium battery output has been also connected with a resistance sampling circuit, for monitoring lithium battery voltage, works as electricity
When measuring too low, enter park mode and prompting charge information for system；The voltage of LDO voltage-stablizers output passes through precision resistance
Partial pressure obtains one and half pressure signals, and the signal is referred to as common-mode voltage VCM, for measured signal to be nursed one's health to common-mode voltage,
It is easy to the processing and collection of signal.
（2）Signal handover module：Input realizes the switching survey of voltage, electric current, electric charge common signal by analog switch
Amount, the switch-over control signal is provided by microcontroller；
（3）Signal-regulated kinase：Comprising ratio attenuator, integrator, I/V converters, frequency overlapped-resistable filter, for surveying
Measure conditioning and the filtering process of signal；
（4）Signal measurement module：Built-in ADC MCU and associated logic control signal.
The beneficial effects of the utility model：
The utility model is by center voltage that signal condition to power supply is powered, i.e. common-mode voltage realizes single-unit
The single supply signal transacting of lithium battery, considerably reduces the complexity of circuit and the power consumption of system, so that it is difficult to reduce design
Degree and cost, realize that low-power consumption and ting model provide feasible program for measuring apparatus.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model；
Fig. 2 is instrument amplifier circuit schematic diagram of the present utility model；
Fig. 3 is frequency overlapped-resistable filter circuit diagram of the present utility model；
Fig. 4 is power module part of the present utility model and cell voltage sampling schematic diagram；
Fig. 5 is common-mode voltage output circuit schematic diagram of the present utility model.
Embodiment
1 ~ 5 pair of the utility model is described in detail below in conjunction with the accompanying drawings：
A kind of battery-powered signal acquisition circuit of single-lithium-battery, it include sensor 1, analog switch 2, ratio attenuator 3,
I/V converters 4, integrator 5, instrument amplifier 6, frequency overlapped-resistable filter 7, analog-digital converter 8, microcontroller 9, usb 10,
Lithium battery 11, LDO voltage stabilizer 12, common-mode voltage output module 13, single lithium battery charging circuit 14, lithium battery voltage sampling electricity
Road 15；
Sensor 1 is connected with ratio attenuator 3, I/V converters 4, integrator 5 respectively by analog switch 2；
Ratio attenuator 3, I/V converters 4, integrator 5 are connected by analog switch 2 with instrument amplifier 6, instrument amplification
Device 6 is connected with frequency overlapped-resistable filter 7, and frequency overlapped-resistable filter 7 is connected with analog-digital converter 8, analog-digital converter 8 and microcontroller 9
Connection；
Microcontroller 9 is connected with analog switch 2, single lithium battery charging circuit 14, usb 10 respectively, usb 10
It is connected with single lithium battery charging circuit 14；
Single lithium battery charging circuit 14 is connected with lithium battery 11, and lithium battery 11 connects with lithium battery voltage sample circuit 15
Connect, lithium battery 11 is connected with LDO voltage stabilizer 12, LDO voltage stabilizer 12 is connected with mode voltage output module 13；Mode voltage output module
13 are connected with analog-digital converter 8.
Lithium battery 11 is in whole signal chains by common-mode voltage output module 13 after the voltage stabilizing of LDO voltage stabilizer 12
Functional module ratio attenuator 3, I/V converters 4, integrator 5, instrument amplifier 6, frequency overlapped-resistable filter 7, analog-digital converter 8
There is provided quiescent point so that system can be operated under single supply condition of power supply.
The signal that sensor 1 is exported, is switched by analog switch 2, in conditioning to corresponding functional circuit.
Usb 10 is that lithium battery 11 is charged by single lithium battery charging circuit 14.
Lithium battery voltage sample circuit 15 is sampled to lithium battery 11, and is acquired and is sent out again by analog-digital converter 8
Give microcontroller 9 and obtain system charge value.
Ratio attenuator 3, I/V converters 4, integrator 5, instrument amplifier 6, frequency overlapped-resistable filter 7 are defeated by common-mode voltage
Go out module 13 and quiescent operation voltage is provided.
In the circuit specific implementation process, most critical is exactly that whole signal chains need signal being operated in a common mode electricity
On pressure point, and the partial pressure for being provided with a resistance of this common-mode voltage is produced by voltage follower again, and it will be supplied to
Integrating circuit, I/V converters, attenuator, a medium voltage operating point of instrument amplifier.
And the numerical portion power supply of whole circuit is powered, in order to reach the maximum power supplying efficiency of lithium battery, it is necessary to using LDO
The TPS73733 of the three terminal regulator of type, such as TI companies.Single-lithium-battery electrolytic battery charger can use the MAX8895 of Maxim, can
Carried out by USB2.0 interfaces to lithium cell charging.
For integrator and attenuator, because all using the circuit topology of operational amplifier anti-phase input, so only need to by
Common-mode voltage VCM is connected to the homophase input section of amplifier.
The REF ends output common mode voltage VCM of instrument amplifier can allow instrument amplifier to be operated in single supply state.
Claims (1)
1. a kind of battery-powered signal acquisition circuit of single-lithium-battery, it is characterised in that：It includes sensor（1）, analog switch
（2）, ratio attenuator（3）, I/V converters（4）, integrator（5）, instrument amplifier（6）, frequency overlapped-resistable filter（7）, modulus turn
Parallel operation（8）, microcontroller（9）, USB interface（10）, lithium battery（11）, LDO voltage stabilizer（12）, common-mode voltage output module
（13）, single lithium battery charging circuit（14）, lithium battery voltage sample circuit（15）；
Sensor（1）Pass through analog switch（2）Respectively with ratio attenuator（3）, I/V converters（4）, integrator（5）Connection；
Ratio attenuator（3）, I/V converters（4）, integrator（5）Pass through analog switch（2）With instrument amplifier（6）Connection, instrument
Table amplifier（6）With frequency overlapped-resistable filter（7）Connection, frequency overlapped-resistable filter（7）With analog-digital converter（8）Connection, analog-to-digital conversion
Device（8）With microcontroller（9）Connection；
Microcontroller（9）Respectively with analog switch（2）, single lithium battery charging circuit（14）, USB interface（10）Connection, USB connects
Mouthful（10）With single lithium battery charging circuit（14）Connection；
Single lithium battery charging circuit（14）With lithium battery（11）Connection, lithium battery（11）With lithium battery voltage sample circuit（15）
Connection, lithium battery（11）With LDO voltage stabilizer（12）Connection, LDO voltage stabilizer（12）With mode voltage output module（13）Connection；Mould electricity
Press output module（13）With analog-digital converter（8）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621459879.7U CN206497161U (en) | 2016-12-29 | 2016-12-29 | A kind of battery-powered signal acquisition circuit of single-lithium-battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621459879.7U CN206497161U (en) | 2016-12-29 | 2016-12-29 | A kind of battery-powered signal acquisition circuit of single-lithium-battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206497161U true CN206497161U (en) | 2017-09-15 |
Family
ID=59801618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621459879.7U Withdrawn - After Issue CN206497161U (en) | 2016-12-29 | 2016-12-29 | A kind of battery-powered signal acquisition circuit of single-lithium-battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206497161U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646056A (en) * | 2016-12-29 | 2017-05-10 | 江西飞尚科技有限公司 | Signal collection circuit and method for single-lithium-battery power supply |
| CN116299005A (en) * | 2023-02-07 | 2023-06-23 | 江南大学 | Power battery health state prediction method based on AAF and deep learning |
-
2016
- 2016-12-29 CN CN201621459879.7U patent/CN206497161U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646056A (en) * | 2016-12-29 | 2017-05-10 | 江西飞尚科技有限公司 | Signal collection circuit and method for single-lithium-battery power supply |
| CN106646056B (en) * | 2016-12-29 | 2024-02-20 | 江西飞尚科技有限公司 | Signal acquisition circuit powered by single lithium battery and acquisition method thereof |
| CN116299005A (en) * | 2023-02-07 | 2023-06-23 | 江南大学 | Power battery health state prediction method based on AAF and deep learning |
| CN116299005B (en) * | 2023-02-07 | 2023-09-05 | 江南大学 | Power battery health state prediction method based on AAF and deep learning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170915 Effective date of abandoning: 20240220 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170915 Effective date of abandoning: 20240220 |