CN201413570Y - Data acquisition transmission device with photoelectric isolation function - Google Patents
Data acquisition transmission device with photoelectric isolation function Download PDFInfo
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- CN201413570Y CN201413570Y CN 200920032717 CN200920032717U CN201413570Y CN 201413570 Y CN201413570 Y CN 201413570Y CN 200920032717 CN200920032717 CN 200920032717 CN 200920032717 U CN200920032717 U CN 200920032717U CN 201413570 Y CN201413570 Y CN 201413570Y
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- access interface
- isolation
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Abstract
The utility model discloses a data acquisition transmission device with photoelectric isolation function, which comprises a microcontroller unit (MCU), analog access interfaces, digital access interfaces, a memory unit and a real-time clock circuit, and a power supply, wherein the memory unit and the real-time clock circuit are respectively connected with the MCU, and the power supply is used to supply power to electricity-consuming units. A plurality of analog access interfaces and digital access interfaces are arranged. The analog access interfaces sequentially pass through an A/D conversioncircuit and a signal isolation circuit I and then is connected with the MCU. The digital access interfaces sequentially pass through a serial communication module, a signal isolation circuit II and aserial expansion unit and then is connected with the MCU. The power supply passes through a DC/DC power supply isolation module and then respectively supplies power to the A/D conversion circuit andthe serial communication module. The utility model has the advantages that the structure is reasonable, the volume is small, the response speed is fast, the impact resistance capability is strong, andthe signal isolation troubles during the use of the data acquisition device are effectively solved.
Description
Technical field
The utility model relates to a kind of data acquisition transmission instrument, especially relates to a kind of data acquisition transmission instrument with photoelectricity isolation features.
Background technology
At present, employed number is adopted the instrument major part and all is integrated with analog quantity input interface and digital-quantity input interface simultaneously on the market, in order to guarantee the safety of equipment, its signal section has all been adopted isolation; Power unit and system power supply are not isolated.Because number is adopted instrument and generally all used at industrial site, what its digital quantity interface was inserted all is on-the-spot instrument, and like this, the hyperbaric environment of industrial site then may logarithm be adopted the response speed, serviceable life, antijamming capability of instrument etc. and caused certain influence.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, a kind of data acquisition transmission instrument with photoelectricity isolation features is provided, it is rational in infrastructure, volume is little and very fast, the shock-resistant ability of response speed is strong, can effectively solve number and adopt multiple Signal Spacing problem in the instrument use.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of data acquisition transmission instrument with photoelectricity isolation features, comprise microcontroller MCU, the analog quantity access interface, the digital quantity access interface, storage unit and the real time clock circuit that joins with microcontroller MCU respectively, and the power supply that each power unit is powered, the quantity of described analog quantity access interface and digital quantity access interface is a plurality of, it is characterized in that: described analog quantity access interface meets microcontroller MCU successively after A/D change-over circuit and signal isolation circuit one, and described digital quantity access interface is successively through the serial communication module, meet microcontroller MCU behind signal isolation circuit two and the serial ports expansion unit; Described power supply is respectively A/D change-over circuit and serial communication module for power supply after the DC/DC power isolation module.
Described serial communication module is RS232 chip and/or RS485 chip.
Described signal isolation circuit one is a PS2801 photoelectricity coupled circuit.
Described signal isolation circuit two is a HCPL-600 high speed optoelectronic coupled circuit.
The utility model compared with prior art has the following advantages: 1, reasonable in design, have advantages such as response speed is very fast, the life-span is long, volume is little, shock-resistant.2, result of use is good, and its buffer circuit is integrated with power isolation circuit and signal isolation circuit, can suppress system noise effectively, eliminates the interference of ground loop.In addition, in the actual use, adopt the infringement that instrument equipment is caused, adopt the signal incoming end of instrument and be connected to an electric capacity high-voltage capacitance that is 3KV at number earlier, guarantee the reliable and operating personnel's of equipment personal safety in order to prevent the high pressure logarithm.3, the utility model power supply that the digital quantity signal that transmitted and digital quantity hop is used is all kept apart fully; Simultaneously, digital quantity signal and the power supply that analog signals is reached microcontroller MCU after the conversion of A/D change-over circuit also kept apart respectively; Like this, make the simulation part keep apart fully, thereby reduced the interference of simulation part decilog character segment with numerical portion.Through application in practice, after the buffer circuit that employing the utility model is set forth, can guarantee the steady operation of data acquisition transmission instrument, and prolong the service time of equipment.In sum, the utility model is rational in infrastructure, volume is little and very fast, the shock-resistant ability of response speed is strong, can effectively solve number and adopt multiple Signal Spacing problem in the instrument use.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
Description of reference numerals:
1-microcontroller MCU; 2-analog quantity access interface; 3-digital quantity access interface;
The 4-storage unit; The 5-real time clock circuit; The 6-power supply;
The 7-A/D change-over circuit; 8-signal isolation circuit one; 9-serial communication module;
The 9-1-RS232 chip; The 9-2-RS485 chip; 10-signal isolation circuit two;
11-serial ports expansion unit; The 12-DC/DC power isolation module.
Embodiment
As shown in Figure 1, the utility model comprises microcontroller MCU1, analog quantity access interface 2, digital quantity access interface 3, the storage unit 4 and the real time clock circuit 5 that join with microcontroller MCU1 respectively, and the power supply 6 that each power unit is powered.The quantity of described analog quantity access interface 2 and digital quantity access interface 3 is a plurality of.Described analog quantity access interface 2 meets microcontroller MCU1 successively after A/D change-over circuit 7 and signal isolation circuit 1, described digital quantity access interface 3 meets microcontroller MCU1 successively behind serial communication module 9, signal isolation circuit 2 10 and serial ports expansion unit 11; Described power supply 6 is respectively A/D change-over circuit 7 and 9 power supplies of serial communication module after DC/DC power isolation module 12.
Described serial communication module 9 is RS232 chip 9-1 and/or RS485 chip 9-2, and described signal isolation circuit 1 is a PS2801 photoelectricity coupled circuit.Described signal isolation circuit 2 10 is the HCPL-600 signal isolation circuit.
In the present embodiment, the quantity of described analog quantity access interface 2 is three, the signal of its access is specially the voltage and current signal through the scene that related sensor is gathered, three tunnel analog quantity input signals mode and microcontroller MCU1 with spi bus after A/D change-over circuit 7 is converted to digital quantity signal communicates, and A/D change-over circuit 7 has been realized Signal Spacing with the employing PS2801 photoelectricity coupled circuit of communicating by letter between the microcontroller MCU1; Simultaneously, adopt DC/DC power isolation module 12 that power supply 6 and A/D change-over circuit 7 have been carried out effective isolation, realized the independently-powered of A/D change-over circuit 7.
The quantity of described digital quantity access interface 3 is five, specifically comprise 4 road RS232 communication modules and 1 road RS485 communication module, wherein 4 road RS232 communication modules are made up of 2 groups of RS232 chips, the RS485 communication module is made up of one group of RS485 chip, all carried out isolated from power between every group of RS232 chip and RS485 chip and the power supply 6 by DC/DC power isolation module 12, promptly realize the independently-powered of every core assembly sheet, also avoided the phase mutual interference between every core assembly sheet when connection device.In addition, because digital quantity signal in use requires very high transfer rate, common light-coupled isolation can only be played the Signal Spacing effect, and the application scenario that can not satisfy two-forty, the utility model adopts the high speed optoelectronic coupled circuit, both realize the isolation of signal, and also can maximum satisfy the transfer rate of 19200bit/S.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of technical solutions of the utility model according to the utility model technical spirit.
Claims (4)
1. instrument is transmitted in the data acquisition with photoelectricity isolation features, comprise microcontroller MCU (1), analog quantity access interface (2), digital quantity access interface (3), storage unit (4) and the real time clock circuit (5) that joins with microcontroller MCU (1) respectively, and the power supply (6) that each power unit is powered, the quantity of described analog quantity access interface (2) and digital quantity access interface (3) is a plurality of, it is characterized in that: described analog quantity access interface (2) meets microcontroller MCU (1) successively after A/D change-over circuit (7) and signal isolation circuit one (8), and described digital quantity access interface (3) is successively through serial communication module (9), meet microcontroller MCU (1) behind signal isolation circuit two (10) and serial ports expansion unit (11); Described power supply (6) is respectively A/D change-over circuit (7) and serial communication module (9) power supply after DC/DC power isolation module (12).
2. according to the described data acquisition transmission instrument with photoelectricity isolation features of claim 1, it is characterized in that: described serial communication module (9) is RS232 chip (9-1) and/or RS485 chip (9-2).
3. according to claim 1 or 2 described data acquisition transmission instrument with photoelectricity isolation features, it is characterized in that: described signal isolation circuit one (8) is PS2801 photoelectricity coupled circuit.
4. according to claim 1 or 2 described data acquisition transmission instrument with photoelectricity isolation features, it is characterized in that: described signal isolation circuit two (10) is HCPL-600 high speed optoelectronic coupled circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920032717 CN201413570Y (en) | 2009-04-21 | 2009-04-21 | Data acquisition transmission device with photoelectric isolation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920032717 CN201413570Y (en) | 2009-04-21 | 2009-04-21 | Data acquisition transmission device with photoelectric isolation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201413570Y true CN201413570Y (en) | 2010-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920032717 Expired - Fee Related CN201413570Y (en) | 2009-04-21 | 2009-04-21 | Data acquisition transmission device with photoelectric isolation function |
Country Status (1)
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| CN (1) | CN201413570Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809680A (en) * | 2012-08-27 | 2012-12-05 | 北京四方继保自动化股份有限公司 | Anti-interference switching value transmission circuit |
| CN104698967A (en) * | 2015-02-10 | 2015-06-10 | 上海鲍麦克斯电子科技有限公司 | Electric controller analog quantity input system and input method thereof |
| CN106980297A (en) * | 2017-05-15 | 2017-07-25 | 北京康斯特仪表科技股份有限公司 | Multi-path pressure data acquisition circuit and multi-path pressure data collecting 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 |
| CN108648435A (en) * | 2018-07-24 | 2018-10-12 | 安阳智创自动控制技术研究有限公司 | A kind of difunctional transmitted in both directions is intelligent actively to send integrated-control apparatus and method |
| CN109634228A (en) * | 2018-11-16 | 2019-04-16 | 美钻深海能源科技研发（上海）有限公司 | A kind of system and method for remotely controlling with signal acquisition |
| CN110477901A (en) * | 2019-08-27 | 2019-11-22 | 武汉吉星医疗科技有限公司 | A kind of physiological signals acquisition card |
| CN110737236A (en) * | 2019-11-07 | 2020-01-31 | 云南合续环境科技有限公司 | Combined logic control circuit and sewage treatment system |
| WO2021087893A1 (en) * | 2019-11-07 | 2021-05-14 | 云南合续环境科技有限公司 | Combinational logic control circuit, and waste water treatment system |
-
2009
- 2009-04-21 CN CN 200920032717 patent/CN201413570Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809680B (en) * | 2012-08-27 | 2015-01-21 | 北京四方继保自动化股份有限公司 | Anti-interference switching value transmission circuit |
| CN102809680A (en) * | 2012-08-27 | 2012-12-05 | 北京四方继保自动化股份有限公司 | Anti-interference switching value transmission circuit |
| CN104698967B (en) * | 2015-02-10 | 2019-04-05 | 上海鲍麦克斯电子科技有限公司 | A kind of electronic control simulation amount input system and its input method |
| CN104698967A (en) * | 2015-02-10 | 2015-06-10 | 上海鲍麦克斯电子科技有限公司 | Electric controller analog quantity input system and input method thereof |
| CN106980297A (en) * | 2017-05-15 | 2017-07-25 | 北京康斯特仪表科技股份有限公司 | Multi-path pressure data acquisition circuit and multi-path pressure data collecting system |
| CN106980297B (en) * | 2017-05-15 | 2024-05-14 | 北京康斯特仪表科技股份有限公司 | Multichannel pressure data acquisition circuit and multichannel pressure data acquisition 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 |
| CN108648435A (en) * | 2018-07-24 | 2018-10-12 | 安阳智创自动控制技术研究有限公司 | A kind of difunctional transmitted in both directions is intelligent actively to send integrated-control apparatus and method |
| CN109634228A (en) * | 2018-11-16 | 2019-04-16 | 美钻深海能源科技研发（上海）有限公司 | A kind of system and method for remotely controlling with signal acquisition |
| CN110477901A (en) * | 2019-08-27 | 2019-11-22 | 武汉吉星医疗科技有限公司 | A kind of physiological signals acquisition card |
| CN110737236A (en) * | 2019-11-07 | 2020-01-31 | 云南合续环境科技有限公司 | Combined logic control circuit and sewage treatment system |
| WO2021087893A1 (en) * | 2019-11-07 | 2021-05-14 | 云南合续环境科技有限公司 | Combinational logic control circuit, and waste water treatment system |
| US11955968B2 (en) | 2019-11-07 | 2024-04-09 | Yunnan Hexu Environmental Technology Co., Ltd. | Combined logic control circuit and sewage treatment system |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20100224 Termination date: 20110421 |