CN203164634U - Digital quantity acquisition system provided with anti-electromagnetic interference circuit - Google Patents
Digital quantity acquisition system provided with anti-electromagnetic interference circuit Download PDFInfo
- Publication number
- CN203164634U CN203164634U CN 201320175386 CN201320175386U CN203164634U CN 203164634 U CN203164634 U CN 203164634U CN 201320175386 CN201320175386 CN 201320175386 CN 201320175386 U CN201320175386 U CN 201320175386U CN 203164634 U CN203164634 U CN 203164634U
- Authority
- CN
- China
- Prior art keywords
- acquisition system
- digital quantity
- electromagnetic interference
- usb
- module
- 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
- 238000004891 communication Methods 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Landscapes
- Power Sources (AREA)
Abstract
The utility model discloses a digital quantity acquisition system provided with an anti-electromagnetic interference circuit. The digital quantity acquisition system comprises a microprocessor, a USB interface power supplying circuit, a digital quantity input interface and a communication module, wherein the digital quantity input interface is connected with the microprocessor through a buffer, and the USB interface power supplying circuit includes a USB conversion module. One end of the USB conversion module is connected with the microprocessor, and the other one end of the USB conversion module is connected with an outer end through a USB interface. The digital quantity acquisition system is characterized in that the digital quantity input interface is also provided with an anti-interference module. According to the digital quantity acquisition system of the utility model, a USB power supplying mode is adopted, and the system is powered by a USB conversion chip, and therefore, the digital quantity acquisition system only needs to be inserted in a main control USB interface to obtain a power source; and the digital quantity input end is provided with the anti-interference module used for performing attenuation on phenomena such as electromagnetic interference, electrical frequency interference and surge, and therefore, the digital quantity acquisition system can be protected.
Description
Technical field
The utility model relates to a kind of digital data acquisition system that is provided with anti-electromagnetic interference (EMI) circuit.
Background technology
A large amount of digital data acquisition devices is adopted in Industry Control, testing ground etc., is used for the on-the-spot running situation of monitoring, needs a lot of sockets to go to satisfy power supply like this, makes that wiring is very inconvenient, and the staff walks about difficultly, is arrived by the electric wire lift-over with tripping easily; Have the electromagnetic interference (EMI) phenomenon in a lot of places very serious now, often the acquisition channel to the digital quantity harvester causes influences such as electromagnetic interference (EMI), electricity frequently disturb, surge, thereby makes Information Monitoring make a mistake or lost efficacy.
The utility model content
The purpose of this utility model namely is to overcome the deficiency of present technology, a kind of digital data acquisition system that is provided with anti-electromagnetic interference (EMI) circuit is provided, and the existing digital data acquisition device of solution often disturbs or surges because of electromagnetic interference (EMI), electricity frequency Information Monitoring mistake or failure phenomenon take place.
The utility model is achieved through the following technical solutions: the digital data acquisition system that is provided with anti-electromagnetic interference (EMI) circuit, comprise microprocessor, USB interface feed circuit, digital-quantity input interface and communication module, described digital-quantity input interface is connected to microprocessor by impact damper, the USB interface feed circuit comprise the USB modular converter, USB modular converter one end is connected to microprocessor, the other end is connected to the outer end by USB interface, and described digital-quantity input interface place also is provided with anti-tampering module.
Described anti-tampering module comprises common mode part and differential mode part.
Described common mode partly comprises inductance L
1, L
2And capacitor C
1, C
2
Described differential mode partly comprises resistance R
1And capacitor C
3
Be connected with reseting module and clock module on the described microprocessor.
Be connected with the state indicating module on the described microprocessor.
The beneficial effects of the utility model are:
(1) adopting the USB powering mode, is system's power supply by a USB conversion chip, makes this device only need namely obtain power supply on the USB interface of insertion master control;
(2) at the digital quantity input end an anti-tampering module is set, is used for electromagnetic interference (EMI), electricity are disturbed and phenomenon such as surge decays frequently, protected acquisition system.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the circuit diagram of anti-tampering module.
Embodiment
The utility model is described in further detail below in conjunction with embodiment, but structure of the present utility model is not limited only to following examples:
[embodiment]
As shown in Figure 1, be provided with the digital data acquisition system of anti-electromagnetic interference (EMI) circuit, comprise microprocessor, USB interface feed circuit, digital-quantity input interface and communication module, described digital-quantity input interface is connected to microprocessor by impact damper, the USB interface feed circuit comprise the USB modular converter, USB modular converter one end is connected to microprocessor, and the other end is connected to the outer end by USB interface, and described digital-quantity input interface place also is provided with anti-tampering module.
As shown in Figure 2, the circuit diagram of anti-tampering module, single anti-tampering module input is introduced the input of two-way digital quantity, general digital data acquisition equipment comprises the input of multi-path digital amount, namely need a plurality of anti-tampering modules to be used, anti-tampering module comprises common mode part and differential mode part, and common mode partly comprises inductance L
1, L
2And capacitor C
1, C
2, inductance L
1, L
2Be used for attenuate high frequency and disturb capacitor C
1, C
2Be Y electric capacity, be used for high frequency common mode is disturbed the introducing the earth; Differential mode partly comprises resistance R
1With the X capacitor C
3Be used for suppressing superpotential and disturb, anti-tampering module is mainly protected whole acquisition system.
Be connected with reseting module and clock module on the described microprocessor, it is the PCF8563 chip that clock module adopts model, and reseting module adopts the MAX6315 chip.
Be connected with the state indicating module on the described microprocessor, the state indicating module is display, is used for showing the communications status of digital-quantity input interface.
The microprocessor of present embodiment adopts the chip of S3C2410 model; The USB modular converter of present embodiment adopts the AIC1526 chip, and the electric current of 500MA is provided to system.
The utility model obtains power supply by USB port, need not the access of external power source, has made things convenient for use.
In the utility model, the digital-quantity input interface external device sends to microprocessor with the status information of equipment, sends to host computer by communication module after the microprocessor processes data.
Claims (6)
1. be provided with the digital data acquisition system of anti-electromagnetic interference (EMI) circuit, comprise microprocessor, USB interface feed circuit, digital-quantity input interface and communication module, described digital-quantity input interface is connected to microprocessor by impact damper, the USB interface feed circuit comprise the USB modular converter, USB modular converter one end is connected to microprocessor, the other end is connected to the outer end by USB interface, it is characterized in that: described digital-quantity input interface place also is provided with anti-tampering module.
2. the digital data acquisition system that is provided with anti-electromagnetic interference (EMI) circuit according to claim 1, it is characterized in that: described anti-tampering module comprises common mode part and differential mode part.
3. the digital data acquisition system that is provided with anti-electromagnetic interference (EMI) circuit according to claim 2, it is characterized in that: described common mode partly comprises inductance L
1, L
2And capacitor C
1, C
2
4. the digital data acquisition system that is provided with anti-electromagnetic interference (EMI) circuit according to claim 2, it is characterized in that: described differential mode partly comprises resistance R
1And capacitor C
3
5. the digital data acquisition system that is provided with anti-electromagnetic interference (EMI) circuit according to claim 1 is characterized in that: be connected with reseting module and clock module on the described microprocessor.
6. the digital data acquisition system that is provided with anti-electromagnetic interference (EMI) circuit according to claim 1 is characterized in that: be connected with the state indicating module on the described microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320175386 CN203164634U (en) | 2013-04-10 | 2013-04-10 | Digital quantity acquisition system provided with anti-electromagnetic interference circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320175386 CN203164634U (en) | 2013-04-10 | 2013-04-10 | Digital quantity acquisition system provided with anti-electromagnetic interference circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203164634U true CN203164634U (en) | 2013-08-28 |
Family
ID=49025806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320175386 Expired - Fee Related CN203164634U (en) | 2013-04-10 | 2013-04-10 | Digital quantity acquisition system provided with anti-electromagnetic interference circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203164634U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111127705A (en) * | 2019-11-21 | 2020-05-08 | 广东名门锁业有限公司 | An intelligent door lock that actively defends against electromagnetic interference |
-
2013
- 2013-04-10 CN CN 201320175386 patent/CN203164634U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111127705A (en) * | 2019-11-21 | 2020-05-08 | 广东名门锁业有限公司 | An intelligent door lock that actively defends against electromagnetic interference |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203164634U (en) | Digital quantity acquisition system provided with anti-electromagnetic interference circuit | |
| CN202393824U (en) | Arrester signal acquisition device for protecting series compensation capacitor | |
| CN203014297U (en) | Split-type wire groove | |
| CN202998167U (en) | Protocol converter | |
| CN204334565U (en) | A power line carrier repeater | |
| CN202583796U (en) | Hot-pluggable multichannel analogue output module | |
| CN203405491U (en) | Support plate circuit used for electrical energy collection terminal and support plate | |
| CN204440391U (en) | A kind of full isolated form RS485 bus transceiver | |
| CN104102149A (en) | Anti-interference digital-quantity acquisition system | |
| CN205142178U (en) | Low -power consumption isolated form MBUS is from quick -witted | |
| CN204304610U (en) | A kind of power distribution network intelligent acquisition control device | |
| CN203482204U (en) | USB-optical fiber Ethernet converter | |
| CN202587019U (en) | Hot-plug Ethernet communication module | |
| CN106533403A (en) | High-performance isolation, distribution and amplification equipment | |
| CN105739362A (en) | Transformer station measurement and control protection device | |
| CN206021057U (en) | A kind of master ＆ slave control system for using two connecting lines | |
| CN204795461U (en) | Network distribution frame based on POE power | |
| CN204289914U (en) | A kind of common RJ45 network information module lightning protection device | |
| CN203339426U (en) | Power socket | |
| CN202838115U (en) | Computer mainboard with display device | |
| CN203455657U (en) | Input expansion module | |
| CN202583748U (en) | Communication module based on serial bus | |
| CN203675104U (en) | Communication module of indoor energy efficiency management terminal | |
| CN202267958U (en) | Universal serial bus (USB) interface circuit of electronic dictionary | |
| CN202231718U (en) | Separated electric power broadband modem module |
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: 20130828 Termination date: 20140410 |