CN2591872Y - Communication interface conversion device of single-loop regulator - Google Patents
Communication interface conversion device of single-loop regulator Download PDFInfo
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- CN2591872Y CN2591872Y CN 02246120 CN02246120U CN2591872Y CN 2591872 Y CN2591872 Y CN 2591872Y CN 02246120 CN02246120 CN 02246120 CN 02246120 U CN02246120 U CN 02246120U CN 2591872 Y CN2591872 Y CN 2591872Y
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- 238000004891 communication Methods 0.000 title claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 title claims description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 230000011664 signaling Effects 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 4
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000013519 translation Methods 0.000 description 2
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The utility model provides an one set is with the differential drive serial communication interface of non-standard, convert the general serial communication interface of computer into, send converting circuit to adopt two-way receiver IC75108, receive single loop regulator signal, convert differential level signal into single-ended level signal, receive converting circuit and adopt two-way driver IC75110, convert single-ended signal into bi-polar differential signal, and realize that the computer carries out data communication with many single loop regulators, guarantee that data transmission is accurate.
Description
Technical field:
The utility model relates to a kind of interface arrangement of communication level signal conversion, particularly relates to a kind of single-loop regulator communication interface conversion equipment.
Background technology:
In the prior art, single-loop regulator is a kind of On-line Control instrument with very strong operational capability and control ability, because this adjuster has microprocessor, its adjusting function is good, use flexibly, its control performance is safe and reliable, is widely used at the petrochemical industry production field.Along with development of computer, realize that single-loop regulator and computer data transmitted mutually in recent years, at first will solve single-loop regulator and computer communication problem.The single-loop regulator of present domestic application, major part all are the import loose mails of introducing, own assembling production.In the former design, the communication interface of single-loop regulator is an off-gauge differential driving serial communication interface (as a Japanese fuji FC series single-loop regulator), finish computer and single-circuit communication, must rely on single-loop regulator manufacturer that supporting communication controller is provided, but because the fewer of application that cost an arm and a leg of communication controller.CN1289960 discloses a kind of communication interface device of miniature recording meter, has realized that RS232 level and oxide semiconductor level or Transistor-Transistor Logic level change mutually.CN2438276 discloses a kind of Communication Interface Converter, has mainly solved device signal not altogether and the narrow defective of power supply voltage range.
Summary of the invention:
The purpose of this utility model provides a kind of single-loop regulator communication interface conversion equipment, can be with off-gauge differential driving serial communication interface, be converted to the serial communication interface of computer general-purpose, and realize that computer and many single-loop regulators carry out data communication.
Single-loop regulator communication interface conversion equipment of the present utility model includes guard shield, single loop sends signaling conversion circuit to computer, single loop receiving computer signaling conversion circuit, power supply, wherein single loop to computer transmission signaling conversion circuit is: adopt two-way receiver IC75108 device U1, receiver IC75108 device U2, receive the single-loop regulator signal, with the differential level conversion of signals of single-loop regulator output is single-ended level signal, input 1 connecting resistance R7 and the anti-interference filtration circuit of IC75108 device U2, input 2 connecting resistance R8 and anti-interference filtration circuit receivers, IC75108 device U1, has the control ability of forbidding and allowing transfer of data, input 12 and the divider resistance R1 of U1, R2 connects, input 12 is 1/2VCC, input 11 meets inhibit signal INH, when signal is high level, U1 allows transfer of data, the output 9 of U1 is connected with the transmission strobe pulse end 5 of U2, U2 is in running order, the output 4 output high level signal drive IC 1488 device U4 of U2, the input 13 of U4,12 export TXD signals through level conversion from output 11 with the signal that receives sends to computer, and TXD is connected with the Data Receiving line of computer RS232 communication interface circuit; Single loop receiving computer signaling conversion circuit is: the data transmission line of computer RS232 communication interface circuit is connected with the RXD signal of IC1489 device U6, the input 13 of U6 is connected with current potential biasing resistor R10, input 12 is connected with external capacitor C5, when input 13 input signals are low level, U6 output 11 output high level signals, the logic input terminal 1 of control bidirectional drive IC75110 device U3, the DTR holding wire of computer RS232 communication interface is connected the input 10 of IC1489 device U5, input 10 meets a current potential biasing resistor R11, when the input of U5 is low level, the output 8 output high level of U5, that is controlling IC75110 device U3 forbids input 3, because bidirectional drive IC75110 device U3 input 2, forbid input 10, meet current potential biasing resistor R9, input 2, forbid that input 10 keeps positive potential, allow to send data, this moment, bidirectional drive IC75110 device U3 was converted to the both-end differential signal with single-ended signal, through U3 output 13,12 send, and it and single-loop regulator send line+TX,-TX is connected.
By above-mentioned circuit conversion, the standard deviation parallel circuit is converted to the serial communication interface of computer general-purpose, realized that computer and many single-loop regulators carry out data communication, transfer of data is accurate.Every group interface can drive 15 single-loop regulators with bus mode.
The utility model has been realized single loop communication controller production production domesticization, has realized that input cost is low, and applied range has been realized Computer Optimizing Control simultaneously, improves the process units automatic control level.
Description of drawings:
Fig. 1 is single-loop regulator communication interface change-over circuit figure.
The circuit symbol explanation: U1 is the end of IC75108, and U2 is the other end of IC75108, and U3 is IC75110, and U4 is IC1488, and U5 is the end of IC1489, and U6 is the other end of IC1489.
Fig. 2 is a single-loop regulator communication interface structure chart
Embodiment
Embodiment:
The high-low level signal controlling of the INH holding wire of IC7510811 end the output level of IC75108 in the accompanying drawing 1, whether the output that this level is being controlled other end IC75108 allows, 6 ends of IC75108 are total gating signals of this integrated circuit, 8 ends are gating signals of this logical circuit, high level is effective, the 12 end input signals of IC75108 are obtained by two 1K Ω electric resistance partial pressures, and it is determining the INH keying level.The single-loop regulator communication data sends and to be :+RX ,-RX differential level signal is converted to the 4 ends output of single-ended level signal through IC75108 through 1 end and 2 ends of IC75108,5 ends are gating signals of this logical circuit, high level is effective, 4 ends of IC75108 output to 12 ends and 13 ends of IC1488 circuit, through the 11 ends output of level translation output signal TXD through the IC1488 circuit, TXD is connected with the Data Receiving line of computer RS232 communication interface circuit.The single-loop regulator communication data receives: the data transmission line of computer RS232 communication interface circuit is connected with 13 end RXD of IC1489 circuit, through level translation output through 11 ends of IC1489 1 end to the IC75110 circuit, through level conversion by 13 ends of IC75110 circuit and 12 ends be output as single-loop regulator receive line+TX ,-TX is connected, 10 ends of IC75110 circuit are total gating signals of this integrated circuit, 3 ends are gating signals of this logical circuit, high level is effective, and 2 ends are input control levels of this logical circuit.The 8 end DTR holding wires of computer RS232 communication interface IC1489 are being controlled 3 ends of IC75110, and it is the gating signal of this logical circuit, and whether the output of controlling IC75110 allows, to guarantee reliability of data transmission.
Communication modes between computer and the single-loop regulator is a master-slave mode, has only the operation of computer bitcom just can cause communication.Be the state that single-loop regulator always is in the communication command of waiting for that computer is sent, oneself can not initiatively send information or ask for information to computer.
Communication between computer and the single-loop regulator is finished like this.At first, computer sends a communication command on network, on the network each adjuster all has different identification codes, can only there be a single-loop regulator to discern on the bus network, receiving the adjuster of order analyzes the head of order, make corresponding action according to order, and then send a palindrome information to computer.
Claims (2)
1, a kind of single-loop regulator communication interface conversion equipment, include guard shield, single loop sends signaling conversion circuit to computer, single loop receiving computer signaling conversion circuit, power supply, it is characterized in that single loop sends signaling conversion circuit to computer and adopts two-way receiver IC75108 device (U1), receiver IC75108 device (U2), the input (12) of IC75108 device (U1) and divider resistance (R1), (R2) connect, input (11) meets inhibit signal INH, (U1) output (9) is connected with the transmission strobe pulse end (5) of (U2), the input (13) of output (U2) (4) and current potential biasing resistor (R6) and IC1488 device (U4), (12) connect, single loop receiving computer signaling conversion circuit is that the data wire of computer RS232 communication interface is connected with the RXD signal of IC1489 device (U6), (U6) input (13) is connected with current potential biasing resistor (R10), input (12) is connected with external capacitor (C5), IC1489 device (U6) output (11) links to each other with the logic input terminal (1) of IC75110 device (U3), the DTR holding wire of computer RS2 32 communication interfaces is connected the input (10) of IC1489 device (U5), the input (10) of IC1489 device (U5) connects a current potential biasing resistor (R11), IC1489 device (U5) output (8) links to each other with (3) end of IC75110 device (U3), IC75110 device (U3) input (2), forbid that input (10) connects current potential biasing resistor (R9), signal is by IC75110 device (U3) output (13), (12) output.
2, communication interface conversion equipment as claimed in claim 1 is characterized in that input (1) connecting resistance (R7) and anti-interference filtration circuit, input (2) connecting resistance (R8) and the anti-interference filtration circuit receivers of IC75108 device (U2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02246120 CN2591872Y (en) | 2002-09-13 | 2002-09-13 | Communication interface conversion device of single-loop regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02246120 CN2591872Y (en) | 2002-09-13 | 2002-09-13 | Communication interface conversion device of single-loop regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2591872Y true CN2591872Y (en) | 2003-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02246120 Expired - Lifetime CN2591872Y (en) | 2002-09-13 | 2002-09-13 | Communication interface conversion device of single-loop regulator |
Country Status (1)
| Country | Link |
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| CN (1) | CN2591872Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1855750B (en) * | 2005-04-20 | 2010-09-01 | 周宗善 | Anti-interfere mono-end signal transmitting method and device |
| CN101304393B (en) * | 2007-02-16 | 2013-07-17 | 西姆特科加拿大有限公司 | Multi-media digital interface systems and methods |
-
2002
- 2002-09-13 CN CN 02246120 patent/CN2591872Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1855750B (en) * | 2005-04-20 | 2010-09-01 | 周宗善 | Anti-interfere mono-end signal transmitting method and device |
| CN101304393B (en) * | 2007-02-16 | 2013-07-17 | 西姆特科加拿大有限公司 | Multi-media digital interface systems and methods |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120913 Granted publication date: 20031210 |