CN201477570U - Multi-channel isolation analogue signal input data acquisition module - Google Patents
Multi-channel isolation analogue signal input data acquisition module Download PDFInfo
- Publication number
- CN201477570U CN201477570U CN2009202047083U CN200920204708U CN201477570U CN 201477570 U CN201477570 U CN 201477570U CN 2009202047083 U CN2009202047083 U CN 2009202047083U CN 200920204708 U CN200920204708 U CN 200920204708U CN 201477570 U CN201477570 U CN 201477570U
- Authority
- CN
- China
- Prior art keywords
- module
- circuit
- isolated
- input data
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Power Sources (AREA)
Abstract
A multi-channel isolation analogue signal input data acquisition module comprises a signal channel isolation module, a power supply isolation module, an A/D conversion circuit, a single chip and a bus communication processing module; wherein each signal channel of the signal channel isolation module comprises a over-voltage protection circuit, a over-current protection circuit, an anti reverse collection protection circuit, and a passive isolation module. The passive isolation module demodulates and outputs signals, the signal input channels are isolated from each other, the outputs of the channels are common-ground linked and accessed into the A/D conversion circuit, and the signals are then transmitted to the single chip, the bus communication processing module and a host computer in turn. The multi-channel isolation analogue signal input data acquisition module can isolate input channels, accurately collect signals, realize high measurement accuracy, resist interference and improve measurement reliability.
Description
[technical field]
The utility model relates to the data acquisition process field, relates in particular to the isolated analog input data signal acquisition module of a kind of hyperchannel.
[background technology]
Along with science and technology development, the requirement that gather data in fields such as industry spot, power monitoring, Medical Devices, experimental study is also more and more higher.In view of attention degree to its result, and to the acquisition precision of acquisition module, antijamming capability, safe reliability, intelligent degree, communications protocol, mounting meanss etc. all have the higher requirement of ratio, in the on-site data gathering process under normal conditions, need receive the simulating signal of the 4-20mA that transmits by the sensor that is dispersed in zones of different, collection unlike signal simultaneously.
These may be reached tens volts, a few hectovolt or even several kilovolts by the voltage difference between the ground wire of sensor transmissions signal.If directly with common input not with the data collecting module collected of isolation, just have error in data, inaccurate, beat, phenomenon such as interfere with each other between the different passages, also can corrupt data acquisition module and sensor in the time of serious.When needs are gathered multiple signals, isolate between can not realizing mutually, be ubiquitous problem in the domestic and international various like products at present.This just caused cost height, measuring accuracy low, disturbed easily, the problem that reliability is also had a greatly reduced quality needs to be resolved hurrily.Under some complicated industrial occasions, take to cooperate the mode of a plurality of signal isolators to gather accurate signal sometimes.But such mode and be desirable especially is all to adopt this scheme at all occasions on the one hand, and in addition on the one hand, it is also can corresponding raising many that this scheme makes that whole collection Operation System has just taken sizable space, cost.
[summary of the invention]
The isolated analog input data signal acquisition module of hyperchannel that the utility model provides a kind of and can isolate input channel for addressing the above problem, acquired signal is accurate, measuring accuracy is high, be not easy to be interfered, reliability greatly improves.
The technical scheme that the utility model addresses the above problem is: comprised that signalling channel is isolated module and power supply is isolated module, analog to digital conversion circuit, single-chip microcomputer and bus communication are handled module, each signalling channel of isolating in the module in described signalling channel all comprises overvoltage, overcurrent and anti-reverse holding circuit, passive isolation module, passing through overvoltage respectively in turn, behind overcurrent and anti-reverse holding circuit and the passive isolation module, carry out demodulation output by passive isolation module, through a precision resistance current signal is transformed into voltage signal then, flow into a filtering circuit and carry out filtering, described filtering circuit is by 1R2,1R3 and CP1 form; Filtering circuit is connected to a pressure limiting circuit, and described pressure limiting circuit built-in element is spacing chip DP2; Entering into analog to digital conversion circuit at last after voltage signal process filtering and pressure limiting are handled, is to isolate mutually between each signal input channel, and the output terminal of passage then is that common ground enters analog to digital conversion circuit simultaneously; Voltage signal is converted into digital signal through analog to digital conversion circuit, is input to single-chip microcomputer again, and the signal in single-chip microcomputer inside to input carries out various processing, handles module by bus communication afterwards and just can finally export the RS-232 signal to host computer; The chip that analog to digital conversion circuit in the isolated analog input data signal acquisition module of described hyperchannel, single-chip microcomputer, bus communication are handled in the module is all finished power supply by power supply isolation module;
Described overvoltage, overcurrent and anti-reverse holding circuit are made up of a resettable fuse 1F1, anti-reverse diode 1D1 and TVS pipe 1ZD1, the signal that is transmitted by signalling channel at first is concatenated into anti-reverse diode 1D1 then through resettable fuse 1F1, TVS pipe 1ZD1 in parallel again finishes and prevents overvoltage, overcurrent, oppositely inserts and the spike undesired signal is disturbed;
Described power supply is isolated module 8～50VDC through an overvoltage, overcurrent and anti-reverse holding circuit, wave circuit and step-down switching mu balanced circuit to a DC-DC isolation module power supply U9 after filtration then, modular power source U9 isolates one group of positive supply of output and one group of negative supply with the power supply signal of input, power supply process filtering and voltage stabilizer voltage stabilizing, and then carry out Filtering Processing;
Describedly be applied to overvoltage, overcurrent and anti-reverse holding circuit that power supply isolates in the module and comprise a resettable fuse F81 and an anti-reverse protection diode D81, again and receive a TVS pipe ZD81; Described filtering circuit is made up of electrochemical capacitor C81 and a ceramic condenser C82; Described decompression voltage regulator is by switch voltage-stabilizing chip U8 and a diode D82, and 81, one electrochemical capacitor C83 of an inductance L form;
Described single-chip microcomputer comprises zero point correction to digital Signal Processing, the full scale calibration, and linear gauging, the data layout conversion, the communications protocol setting, baud rate is provided with intelligent control technology;
Described passive isolation module is by reconciling circuit, electromagnetic isolation reconciliation circuit demodulation circuit composition., then and receive electrochemical capacitor C81 and ceramic condenser C82, arrive step-down switching voltage stabilizing chip U8,
Described passive isolation module comprises one and reconciles circuit, electromagnetic isolation reconciliation circuit demodulation circuit;
The beneficial effects of the utility model are: since between output of each signal input channel, signal and the accessory power supply all be isolate mutually and isolation voltage up to 3000VDC, so can not produce undesired signals such as circulation when gathering teledata between each passage ground wire because of pressure reduction, make whole signal acquiring system interference free performance stronger.The present invention effectively suppress between the hyperchannel interfere with each other with power supply on EMC disturb, improved the precision of data acquisition, intelligent degree height, volume dwindles greatly, cost is lower.Can be widely used in industrial automation equipment, industry control instrument and meter, reach other measurement instrument manufacturing industry, realize the bus communication between sensor and the host computer, measure the multi-channel long simulating signal accurately and reliably and various sensor signal (comprises thermal resistance, thermopair, foil gauge etc.), the supervision of temperature signal and control, and industry spot Signal Spacing and long line transmission
[description of drawings]
Fig. 1 is the whole principle flow chart of the utility model;
Fig. 2 is that the utility model signalling channel is isolated a bars channel circuit figure in the module;
Fig. 3 (a) is that the utility model power supply is isolated module part circuit diagram;
Fig. 3 (b) is that the utility model power supply is isolated module another part circuit diagram
[embodiment]
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.
Visible with reference to the accompanying drawings the utility model has comprised that signalling channel is isolated module 1 and power supply is isolated module 2; analog to digital conversion circuit 3; single-chip microcomputer 4 and bus communication are handled module 5; its characteristics are; each signalling channel of isolating in the module in described signalling channel all comprises overvoltage; overcurrent and anti-reverse holding circuit 6; passive isolation module 7; passing through overvoltage respectively in turn; behind overcurrent and anti-reverse holding circuit 6 and the passive isolation module 7; carry out demodulation output by passive isolation module 7; described overvoltage; overcurrent and anti-reverse holding circuit 6 are by a resettable fuse 1F1; anti-reverse diode 1D1 and TVS pipe 1ZD1 form; the signal that is transmitted by signalling channel at first is concatenated into anti-reverse diode 1D1 then through resettable fuse 1F1; TVS pipe 1ZD1 parallel connection again finishes preventing overvoltage; overcurrent; oppositely insert and the interference of spike undesired signal.Described passive isolation module 7 comprises one and reconciles circuit, electromagnetic isolation reconciliation circuit demodulation circuit.
Signal is being connected to a precision resistance 1R1 through after the passive isolation module 7, this resistance can transform into voltage signal to current signal, voltage signal carries out filtering through a filtering circuit 8 of being made up of 1R2,1R3 and CP1 again, next through a pressure limiting circuit 9, described pressure limiting circuit 9 built-in elements are spacing chip DP2, and spacing chip DP2 restriction input voltage is too high or too low.
After handling, voltage signal process filtering and pressure limiting enter into analog to digital conversion circuit 3 at last, at analog to digital conversion circuit 3 built-in modulus conversion chip U10; Be to isolate mutually between each signal input channel, the output terminal of passage then is that common ground enters analog to digital conversion circuit 3 simultaneously; Voltage signal is converted into digital signal through analog to digital conversion circuit,
Be input to single-chip microcomputer 4 again, the signal in single-chip microcomputer 4 inside to input carries out various processing, comprises zero point correction, the full scale calibration, and linear gauging, the data layout conversion, the communications protocol setting, baud rate is provided with or the like;
Described power supply is isolated module 2 through an overvoltage, overcurrent and anti-reverse holding circuit; wave circuit and step-down switching mu balanced circuit to a DC-DC isolation module power supply U9 after filtration then; modular power source U9 isolates one group of positive supply of output and one group of negative supply with the power supply signal of input; power supply process filtering and voltage stabilizer voltage stabilizing, and then carry out Filtering Processing.The overvoltage of described isolated from power module 2, overcurrent and anti-reverse holding circuit comprise resettable fuse F81 and an anti-reverse protection diode D81 and a TVS pipe ZD81; resettable fuse F81 be connected in series to anti-reverse protection diode D81 and then and receive TVS pipe ZD81, realize the purpose that prevents that the spike undesired signal from disturbing.
Described filtering circuit comprises electrochemical capacitor C81 and ceramic condenser C82, and described electrochemical capacitor C81 and ceramic condenser C82 are that parallel connection is linked in the circuit.Next be directly connected to step-down switching voltage stabilizing chip U8, switch voltage-stabilizing chip U8 and a diode D82, an inductance L 81, an electrochemical capacitor C83 forms a switch voltage-stabilizing circuit, by stable power voltage to one DC-DC isolation module power supply U9 of this switch voltage-stabilizing circuit output, modular power source U9 isolates one group of positive supply of output and one group of negative supply with the power supply signal of input, wherein positive supply is through electrochemical capacitor C86 filtering, pass through series voltage regulator U3 voltage stabilizing again, pass through electrochemical capacitor C5 and ceramic condenser C6 filtering then, be used for to output terminal single-chip microcomputer 4, pass through inductance L 11 and inductance L 12 and electrochemical capacitor C1 and ceramic condenser C2 filtering at last, be used for powering to modulus conversion chip U10;
And negative supply passes through current-limiting resistance R15 again through electrochemical capacitor C87 filtering, passes through shunt regulator U7 voltage stabilizing and electrochemical capacitor C11 filtering then, is used for powering to modulus conversion chip U10 negative terminal.
Claims (6)
1. isolated input data acquisition module of hyperchannel, comprise signalling channel isolation module (1), power supply is isolated module (2), analog to digital conversion circuit (3), single-chip microcomputer (4) and bus communication are handled module (5), it is characterized in that, each signalling channel that described signalling channel is isolated in the module all comprises overvoltage, overcurrent and anti-reverse holding circuit (6), passive isolation module (7), through a resistance (1R1) current signal is transformed into voltage signal then, flow into a filtering circuit (8) and carry out filtering, filtering circuit (8) is connected to a pressure limiting circuit (9), after pressure limiting circuit output, be input to analog to digital conversion circuit (3), be to isolate mutually between each signal input channel, the output terminal of passage then is that common ground enters analog to digital conversion circuit (3) simultaneously; Be input to single-chip microcomputer (4) from analog to digital conversion circuit (3), handle module (5) by bus communication afterwards and just can final output signal arrive host computer; The chip that analog to digital conversion circuit (3) in the isolated analog input data signal acquisition module of described hyperchannel, single-chip microcomputer (4), bus communication are handled in the module (5) is all finished power supply by power supply isolation module (2).
2. according to the isolated analog input data signal acquisition module of the described hyperchannel of claim 1; it is characterized in that; described overvoltage, overcurrent and anti-reverse holding circuit are made up of a resettable fuse (1F1), anti-reverse diode (1D1) and TVS pipe (1ZD1); the signal that is transmitted by signalling channel at first passes through resettable fuse (1F1) and is concatenated into anti-reverse diode (1D1) then, again TVS pipe in parallel (1ZD1).
3. according to the isolated analog input data signal acquisition module of the described hyperchannel of claim 1; it is characterized in that; described power supply is isolated module 8～50VDC through an overvoltage, overcurrent and anti-reverse holding circuit; wave circuit and step-down switching mu balanced circuit to a DC-DC isolation module power supply (U9) after filtration then, modular power source (U9) is isolated one group of positive supply of output and one group of negative supply with the power supply signal of input.
4. according to the isolated analog input data signal acquisition module of the described hyperchannel of claim 2, it is characterized in that, describedly be applied to overvoltage, overcurrent and anti-reverse holding circuit that power supply isolates in the module and comprise a resettable fuse (F81) and an anti-reverse protection diode (D81), again and receive a TVS and manage (ZD81); Described filtering circuit is made up of an electrochemical capacitor (C81) and a ceramic condenser (C82); Described decompression voltage regulator is by a switch voltage-stabilizing chip (U8) and a diode (D82), an inductance (L81), and an electrochemical capacitor (C83) is formed.
5. according to the isolated analog input data signal acquisition module of the described hyperchannel of claim 1, it is characterized in that described single-chip microcomputer comprises zero point correction to digital Signal Processing, the full scale calibration, linear gauging, data layout conversion, communications protocol is provided with, and baud rate is provided with intelligent control technology.
6. according to the isolated analog input data signal acquisition module of the described hyperchannel of claim 1, it is characterized in that described passive isolation module (7) is by reconciling circuit, electromagnetic isolation reconciliation circuit demodulation circuit composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202047083U CN201477570U (en) | 2009-09-09 | 2009-09-09 | Multi-channel isolation analogue signal input data acquisition module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202047083U CN201477570U (en) | 2009-09-09 | 2009-09-09 | Multi-channel isolation analogue signal input data acquisition module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201477570U true CN201477570U (en) | 2010-05-19 |
Family
ID=42413823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202047083U Expired - Fee Related CN201477570U (en) | 2009-09-09 | 2009-09-09 | Multi-channel isolation analogue signal input data acquisition module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201477570U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645364A (en) * | 2013-11-29 | 2014-03-19 | 湖北迅迪科技有限公司 | Multipath analog signal summation transmitter |
| CN105137234A (en) * | 2015-08-27 | 2015-12-09 | 郑州华力信息技术有限公司 | Multi-channel direct current analog detecting device |
| CN105281748A (en) * | 2014-07-22 | 2016-01-27 | 巨控自动化股份有限公司 | Isolated signal transfer device, isolation signal transmission circuit and isolation signal receiving circuit |
| CN105371969A (en) * | 2015-12-04 | 2016-03-02 | 上海工程技术大学 | Track plate temperature remote monitoring system |
| CN105870901A (en) * | 2016-03-29 | 2016-08-17 | 杭州和利时自动化有限公司 | Protective circuit for current collection channel of controller |
| CN106451772A (en) * | 2016-10-08 | 2017-02-22 | 广州供电局有限公司 | Direct voltage acquisition apparatus |
| CN106444480A (en) * | 2016-08-31 | 2017-02-22 | 湖南千智机器人科技发展有限公司 | Acquisition control module of handheld control equipment |
| CN107085401A (en) * | 2017-06-30 | 2017-08-22 | 中广核达胜加速器技术有限公司 | A kind of multifunctional signal Isolation protector |
| CN107121958A (en) * | 2017-07-06 | 2017-09-01 | 哈工大机器人（合肥）国际创新研究院 | A kind of multichannel mixed signal acquisition system for medical rehabilitation apparatus |
| CN107357248A (en) * | 2017-07-20 | 2017-11-17 | 上海浅雪汽车电子有限公司 | Inertial navigation unit and system |
| CN108181875A (en) * | 2018-03-21 | 2018-06-19 | 恒进感应科技（十堰）股份有限公司 | One kind is used for Induction Heat Treatment Equipment data management and control device |
| CN111093171A (en) * | 2020-03-23 | 2020-05-01 | 北京全路通信信号研究设计院集团有限公司 | BTM data isolation acquisition equipment and acquisition method thereof |
| CN112165256A (en) * | 2020-10-30 | 2021-01-01 | 杭州海兴电力科技股份有限公司 | DC-to-DC isolating switch power supply system for three-phase multifunctional electric energy meter |
-
2009
- 2009-09-09 CN CN2009202047083U patent/CN201477570U/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645364A (en) * | 2013-11-29 | 2014-03-19 | 湖北迅迪科技有限公司 | Multipath analog signal summation transmitter |
| CN103645364B (en) * | 2013-11-29 | 2018-04-27 | 湖北迅迪科技有限公司 | A kind of multipath analog signal summation transmitter |
| CN105281748A (en) * | 2014-07-22 | 2016-01-27 | 巨控自动化股份有限公司 | Isolated signal transfer device, isolation signal transmission circuit and isolation signal receiving circuit |
| CN105281748B (en) * | 2014-07-22 | 2018-04-17 | 巨控自动化股份有限公司 | Isolation instructing signal transfer device and isolation signals transmitting circuit and its receiving circuit |
| CN105137234A (en) * | 2015-08-27 | 2015-12-09 | 郑州华力信息技术有限公司 | Multi-channel direct current analog detecting device |
| CN105371969B (en) * | 2015-12-04 | 2018-02-23 | 上海工程技术大学 | A kind of track plates temperature remote monitoring system |
| CN105371969A (en) * | 2015-12-04 | 2016-03-02 | 上海工程技术大学 | Track plate temperature remote monitoring system |
| CN105870901A (en) * | 2016-03-29 | 2016-08-17 | 杭州和利时自动化有限公司 | Protective circuit for current collection channel of controller |
| CN106444480A (en) * | 2016-08-31 | 2017-02-22 | 湖南千智机器人科技发展有限公司 | Acquisition control module of handheld control equipment |
| CN106451772A (en) * | 2016-10-08 | 2017-02-22 | 广州供电局有限公司 | Direct voltage acquisition apparatus |
| CN107085401A (en) * | 2017-06-30 | 2017-08-22 | 中广核达胜加速器技术有限公司 | A kind of multifunctional signal Isolation protector |
| CN107121958A (en) * | 2017-07-06 | 2017-09-01 | 哈工大机器人（合肥）国际创新研究院 | A kind of multichannel mixed signal acquisition system for medical rehabilitation apparatus |
| CN107121958B (en) * | 2017-07-06 | 2023-08-01 | 合肥哈工力训智能科技有限公司 | Multichannel mixed signal acquisition system for medical rehabilitation equipment |
| CN107357248A (en) * | 2017-07-20 | 2017-11-17 | 上海浅雪汽车电子有限公司 | Inertial navigation unit and system |
| CN107357248B (en) * | 2017-07-20 | 2023-07-04 | 上海浅雪汽车电子有限公司 | Inertial navigation device and system |
| CN108181875A (en) * | 2018-03-21 | 2018-06-19 | 恒进感应科技（十堰）股份有限公司 | One kind is used for Induction Heat Treatment Equipment data management and control device |
| CN111093171A (en) * | 2020-03-23 | 2020-05-01 | 北京全路通信信号研究设计院集团有限公司 | BTM data isolation acquisition equipment and acquisition method thereof |
| CN111093171B (en) * | 2020-03-23 | 2020-07-31 | 北京全路通信信号研究设计院集团有限公司 | BTM data isolation acquisition equipment and acquisition method thereof |
| CN112165256A (en) * | 2020-10-30 | 2021-01-01 | 杭州海兴电力科技股份有限公司 | DC-to-DC isolating switch power supply system for three-phase multifunctional electric energy meter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201477570U (en) | Multi-channel isolation analogue signal input data acquisition module | |
| CN101476903A (en) | General-purpose interface collection system of sensor | |
| CN104410164B (en) | Ii type electric energy efficiency management terminal and system | |
| CN201616023U (en) | Signal isolation conversion output module | |
| CN103901280A (en) | Intelligent thunder and lightning monitoring device | |
| CN208635836U (en) | A kind of CAN bus based power information acquisition system | |
| CN210626919U (en) | High-precision analog quantity data acquisition module based on RS-485 communication | |
| CN201555895U (en) | Single-phase digital current/voltage measuring instrument | |
| CN103337905A (en) | Digitalized protection and measuring/control device integrated with metering function | |
| CN202382873U (en) | Intelligent temperature transmitter | |
| CN202257312U (en) | Temperature control device of intelligent transformer | |
| CN209280821U (en) | A kind of outer electric energy quality monitoring, recording instrument of household portable | |
| CN104697604B (en) | It is a kind of can field calibration capacitance level transducer | |
| CN208283459U (en) | A kind of current monitoring device | |
| CN217159677U (en) | Rotating speed acquisition circuit and rotating speed acquisition device | |
| CN105624734A (en) | Aluminum electrolysis cell anode distributed current precise measuring instrument with self-calibration function | |
| CN105675996B (en) | A kind of power battery internal resistance on-line monitoring system and method | |
| CN209946250U (en) | Three-phase current acquisition circuit based on compensation circuit and acquisition device | |
| CN209783767U (en) | Multichannel thermocouple collection module | |
| CN203216631U (en) | Power transformer Pt100 signal conversion apparatus with lightning-stroke protection | |
| CN203825065U (en) | Circuit used for amplifying input signal of intelligent controller | |
| CN108183727B (en) | Electricity consumption information interference signal filtering device, electricity consumption information acquisition system and method | |
| CN113162057A (en) | Intelligent ammeter box and control method thereof | |
| CN208902784U (en) | Signal isolation circuit is used in a kind of detection | |
| CN203250174U (en) | Voltage measure circuit and automatic change-over switch controller |
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: 20100519 Termination date: 20110909 |