CN2600844Y - Loop redundancy control device - Google Patents
Loop redundancy control device Download PDFInfo
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- CN2600844Y CN2600844Y CN 03220136 CN03220136U CN2600844Y CN 2600844 Y CN2600844 Y CN 2600844Y CN 03220136 CN03220136 CN 03220136 CN 03220136 U CN03220136 U CN 03220136U CN 2600844 Y CN2600844 Y CN 2600844Y
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Abstract
The utility model relates to a safety device of multi-channel loop, in particular to a loop redundancy control device, which comprises a central processing device. The utility model is structurally characterized in that: the utility model further comprises a switch conversion device and a signal tracing device, wherein the switch conversion device and the signal tracking device are respectively connected with the central processing device; output end of the switch conversion device is connected with input end of the controlled equipments; the signal tracking device is provided with a port for connection with the main controller. The utility model has the advantages of that: the utility model is capable of hot backup redundancy, compared with loop controllers, thus can be used for loop redundancy control for single loop control in medium and small enterprises, without the need of controllers of complicated functions; being of simple control contents and inherent control programs, the utility model has a simple structure, a low cost and favorable economical efficiency.
Description
Technical field
The utility model relates to a kind of safety feature with hyperchannel loop, particularly a kind of loop redundancy control apparatus.
Background technology
Circuit control device of the prior art includes a central processing unit, it receives the controlling and driving signal of master controller, and according to central processing unit intrinsic control program send steering order, to control the controll plant in this loop, this circuit control device generally is applicable to by master controller the loop of single or minority is controlled.The master controller here is meant and can carries out the device that multiloop is provided with control by programming or other modes, as PLC or DCS etc.But this circuit control device does not possess redundant effect is not arranged, can't receive control signal and feedback signal, can't follow the tracks of and hot backup redundancy yet the state of a control of master controller.If in the time of need carrying out redundancy, then need adopt two cover master controllers to carry out redundancy backup, promptly first master controller is as control commonly used, and second master controller is as Redundant Control, can control tracking by setting between first master controller and second master controller, thereby reach the effect of hot backup redundancy, but in medium and small sized enterprises, the loop of its control is often comparatively single, if adopt master controller such as PLC to carry out hot backup redundancy, then have the following disadvantages: follow the tracks of that 1, complexity being set, need the professional carefully to be provided with; 2, owing to the complex structure of PLC, loop general more at quantity, that control is complicated is controlled, and in medium-sized and small enterprises, the loop of its required redundancy is few, and control is simple, if adopt PLC to carry out redundancy, then cause the waste that wastes of equipment self, and cause with high costs thus.
Invention constitutes
The purpose of this utility model is to overcome weak point of the prior art and provides a kind of and can carry out hot backup redundancy, loop redundancy control apparatus simple in structure, with low cost simultaneously to single loop.
The purpose of this utility model can realize by following approach:
The loop redundancy control apparatus, include a central processing unit, its structural feature is, also include switch transition device and signal trace device, the switch transition device is connected with central processing unit respectively with the signal trace device, and switch transition device control output end is connected with the input end of controlled plant, and signal trace device one port then is connected with master controller.
When master controller is in this machine state of a control, its can be by the loop redundancy control apparatus the control output end of switch transition device controlled plant is controlled, and send its control signal to central processing unit through its signal output part by the signal trace device at any time, make central processing unit can handle and store this control signal at any time, so that get involved state of a control at any time, can cut the state of control at any time so the loop redundancy control apparatus is in the retentive control communication, promptly this redundancy control apparatus is in the hot backup redundancy state of a control;
When master controller breaks down, the switch transition device will receive the fault-signal of master controller, and being connected of cut-out and master controller, and drop into the loop redundancy control apparatus controlled plant is controlled, this moment, the loop redundancy control apparatus was in this machine state of a control, the control signal that central processing unit institute when cutting off main controller controls handles and stores is as the init state of control, and by the signal trace device with the signal input part of state of a control information conveyance to master controller.
Because when the master controller operate as normal, redundancy control apparatus receive the control signal of master controller at any time, when breaking down with convenient master controller, redundancy control apparatus can be cut state of a control at any time, and do not influence its production control, realize that steady unperturbed switches, and like this, just can carry out Redundant Control to circuit controls by redundancy control apparatus, make it to realize and to guarantee continuity production, also realized steady unperturbed switching controls simultaneously.
Because in the medium-sized and small enterprises control system, general need slave mode single to certain or the loop that minority is important be carried out Redundant Control, only need to adopt controller this moment with specific independent algorithm, and the central processing unit in the redundancy control apparatus of loop described in the utility model has promptly comprised this specific independent algorithm, so the loop redundancy control apparatus can carry out Redundant Control at the loop of single or minority, its control content is simple, its control program can intrinsicization, so it is simple in structure, with low cost.
The utility model can also further be specially:
The signal trace device comprises tracking signal receiving trap and tracking signal dispensing device, and the two is connected with central processing unit respectively.
The tracking signal receiving trap receives the control information of master controller when redundancy control apparatus is in the Redundant Control state, and the tracking signal dispensing device sends the control information of this machine to master controller when redundancy control apparatus is in this machine state of a control.Like this, no matter be that master controller switches to redundancy control apparatus, or redundancy control apparatus switches to master controller, all can carry out the tracking of control information, thereby realize the steady and unperturbed of control transformation.
The switch transition device includes signal receiving device, standard apparatus, comparison means and switch switching device shifter, the input end of signal receiving device is connected with the fault-signal output terminal of master controller, and the output terminal of output terminal and standard apparatus is connected with two input ends of comparison means respectively, and the output terminal of comparison means is connected with the control input end of switch switching device shifter.
When signal receiving device received the signal of master controller, it will compare by comparison means with the reference value in the standard apparatus, if this signal is a control signal, then by the switch switching device shifter this control signal was sent on the controlled plant; If this signal is a fault-signal, then by the switch switching device shifter will with the cut-out that is connected of master controller, issue a signal transmitted to central processing unit simultaneously, central processing unit will be cut control after receiving this signal, and send and control signal to controlled plant, carry out the control of this machine, cut off the reception of tracking signal simultaneously, begin the tracking output of this machine control signal.
The utility model can also further be specially:
Also include feedback signal receiving trap and feedback signal dispensing device, the two is connected with central processing unit respectively, the feedback signal receiving trap is connected with the signal output part of controlled plant by a signal feedback device, and the feedback signal dispensing device then is connected with the receiving end of master controller.
The feedback signal receiving trap passes to the slave mode information of controlled plant by signal feedback device the central processing unit of loop redundancy control apparatus, after central processing unit receives feedback information by the feedback signal receiving trap, handle and store, and this feedback information sent to master controller by the feedback signal dispensing device, no matter be master controller or redundancy control apparatus like this, but equal receiving feedback information, and controlled plant is carried out regulating and controlling: when the loop redundancy control apparatus is in the Redundant Control state, can handles and store to this feedback information according to feedback information; When being in this machine state of a control, then with the init state of this feedback information as foundation setting or access control, thereby the steady and unperturbed of further having realized Redundant Control switches.
Signal feedback device can also have following implementation:
The feedback signal receiving trap comprises control signal feedback receiving trap and measuring-signal feedback receiving trap, and signal feedback device comprises control signal feedback assembly and measuring-signal feedback assembly, and the two is connected with measuring-signal feedback receiving trap with control signal feedback receiving trap respectively.
Because control signal and measuring-signal can be one group of complementary feedback signals, control signal can be a kind of status information that controlled plant is controlled, and measuring-signal then is the in check procedural information of controlled plant self.For example: control signal is a valve position signal, and measuring-signal then is a flow measurement signal, and controller can be controlled according to flow measurement signal and valve position signal: too small when flow, then transfer big valve position; Excessive when flow, then turn valve position down; Excessive or too small when flow, all can't adjust valve position, then send alerting signal.Certainly can also only control by measuring feedback signal.
Another signal output part of measuring-signal feedback assembly is connected with the input end of master controller.
The feedback of control signal can be delivered to redundancy control apparatus by controlled plant, and then sends to master controller by the signal trace device of redundancy control apparatus, makes master controller and redundancy control apparatus all can receive the feedback of control signal.
The feedback of measuring-signal then can be delivered to redundancy control apparatus and master controller respectively by controlled plant, and like this, the two also all can receive the feedback of measuring-signal.
Central processing unit, the switch transition device, the signal trace device, feedback signal receiving trap and feedback signal dispensing device comprise that model is the chip of 89C51RD2, JP300 output interface and input circuit, input circuit comprises that model is 4051 gating chip, ICL7135 integration chip and 74HC244 extended chip, wherein 12～14 pin of output interface JP300 respectively with 11 pin of 89C51RD2,10 pin, 14 pin connect, 3 pin of 74HC244,5 pin, 7 pin, 9 pin, 12 pin, 14 pin, 16 pin are connected with 39～32 pin of 89C51RD2 respectively with 18 pin, 2 pin of 74HC244,4 pin, 6 pin, 8 pin, 11 pin, 13 pin, 15 pin, 17 pin then respectively with 13～16 pin of ICL7135,27～28 pin, 23 pin connect, 10 pin of ICL7135 are connected with 4051 3 pin, and 4051 2 pin connect the input end of master controller.
Like this, the JP300 output interface is as the signal output part of loop redundancy control apparatus, both its control output, feedback send and follow the tracks of output and all can realize by this output interface, and it is followed the tracks of input, feedback input and fault-signal input and all can realize by input circuit.
In sum, the utility model carries out redundancy by adopting redundancy control apparatus to control system, so can be when master controller breaks down, at any time put into operation, with the master controller of acting for sb controlled plant is controlled, like this, even master controller is uncontrollable, do not influence the operation of controlled plant yet, thereby realized and guaranteed the continuity of producing.Simultaneously, because redundancy control apparatus is followed the tracks of the control information of master controller at any time,, can realize that also steady the and unperturbed of controlling switches so realizing on the redundant basis.
Description of drawings
Figure 1 shows that the structural framing synoptic diagram of the utility model most preferred embodiment;
Figure 2 shows that the structural representation of the utility model most preferred embodiment;
Figure 3 shows that the circuit diagram of the utility model most preferred embodiment;
Below we are further described the utility model in conjunction with the embodiments.
Specific embodiment
Most preferred embodiment:
With reference to accompanying drawing 1, the loop redundancy control apparatus includes central processing unit 3, switch transition device 4 and signal trace device 5, and switch transition device 4 is connected with central processing unit 3 respectively with signal trace device 5; And a control output end of switch transition device 4 is connected with the input end of controlled plant 2, and 5 in signal trace device is connected with master controller 1, and a control output end of central processing unit 3 is connected with another input end of controlled plant 2 simultaneously.
With reference to accompanying drawing 2, signal trace device 5 comprises tracking signal receiving trap 51 and tracking signal dispensing device 52, the two is connected with central processing unit 3 respectively, and the signal output part of master controller 1 is connected with the input end of tracking signal receiving trap 51 and the output terminal of tracking signal dispensing device 52 respectively with signal input part.Switch transition device 4 includes signal receiving device 41, standard apparatus 42, comparison means 43 and switch switching device shifter 44, the input end of signal receiving device 41 is connected with the fault-signal output terminal of master controller 1, and the output terminal of output terminal and standard apparatus 42 is connected with two input ends of comparison means 43 respectively, and the output terminal of comparison means 43 is connected with the control input end of switch switching device shifter 44.The loop redundancy control apparatus also includes feedback signal receiving trap 6 and feedback signal dispensing device 7, the two is connected with central processing unit 3 respectively, feedback signal receiving trap 6 is connected with the signal output part of controlled plant 2 by a signal feedback device 8, and feedback signal dispensing device 7 then is connected with the receiving end of master controller 1; The feedback signal receiving trap comprises control signal feedback receiving trap 61 and measuring-signal feedback receiving trap 62, and signal feedback device 8 comprises control signal feedback assembly 81 and measuring-signal feedback assembly 82, the two is connected with measuring-signal feedback receiving trap 62 with control signal feedback receiving trap 61 respectively, and another signal output part of measuring-signal feedback assembly 82 is connected with the input end of master controller 1.
With reference to accompanying drawing 3, central processing unit 3, switch transition device 4, signal trace device 5, feedback signal receiving trap 6 and feedback signal dispensing device 7 comprise that model is the chip of 89C51RD2, JP300 output interface and input circuit, input circuit comprises that model is 4051 gating chip, ICL7135 integration chip and 74HC244 extended chip, wherein 12～14 pin of output interface JP300 respectively with 11 pin of 89C51RD2,10 pin, 14 pin connect, 3 pin of 74HC244,5 pin, 7 pin, 9 pin, 12 pin, 14 pin, 16 pin are connected with 39～32 pin of 89C51RD2 respectively with 18 pin, 2 pin of 74HC244,4 pin, 6 pin, 8 pin, 11 pin, 13 pin, 15 pin, 17 pin then respectively with 13～16 pin of ICL7135,27～28 pin, 23 pin connect, 10 pin of ICL7135 are connected with 4051 3 pin, and 4051 2 pin connect the input end of master controller.The JP300 output interface is as the signal output part of loop redundancy control apparatus, and both its control output, feedback sends and follow the tracks of output and all can realize by this output interface, and it is followed the tracks of input, feedback input and fault-signal input and all can realize by input circuit.
It is same as the prior art that the utility model is not stated part.
Claims (7)
1, loop redundancy control apparatus, include a central processing unit (3), it is characterized in that, also include switch transition device (4) and signal trace device (5), switch transition device (4) is connected with central processing unit (3) respectively with signal trace device (5), and the control output end of switch transition device (4) is connected with the input end of controlled plant (2), and a port of signal trace device (5) then is connected with master controller (1).
2, loop according to claim 1 redundancy control apparatus is characterized in that signal trace device (5) comprises tracking signal receiving trap (51) and tracking signal dispensing device (52), and the two is connected with central processing unit (3) respectively.
3, loop according to claim 1 redundancy control apparatus, it is characterized in that, switch transition device (4) includes signal receiving device (41), standard apparatus (42), comparison means (43) and switch switching device shifter (44), the input end of signal receiving device (41) is connected with the fault-signal output terminal of master controller (1), and the output terminal of output terminal and standard apparatus (42) is connected with two input ends of comparison means (43) respectively, and the output terminal of comparison means (43) is connected with the control input end of switch switching device shifter (44).
4, loop according to claim 1 redundancy control apparatus, it is characterized in that, also include feedback signal receiving trap (6) and feedback signal dispensing device (7), the two is connected with central processing unit (3) respectively, feedback signal receiving trap (6) is connected with the signal output part of controlled plant (2) by a signal feedback device (8), and feedback signal dispensing device (7) then is connected with the receiving end of master controller (1).
5, loop according to claim 4 redundancy control apparatus, it is characterized in that, feedback signal receiving trap (6) comprises control signal feedback receiving trap (61) and measuring-signal feedback receiving trap (62), and signal feedback device (8) comprises control signal feedback assembly (81) and measuring-signal feedback assembly (82), and the two is connected with measuring-signal feedback receiving trap (62) with control signal feedback receiving trap (61) respectively.
6, loop according to claim 5 redundancy control apparatus is characterized in that another signal output part of measuring-signal feedback assembly (82) is connected with the input end of master controller (1).
7, loop according to claim 1 redundancy control apparatus, it is characterized in that, central processing unit (3), switch transition device (4), signal trace device (5), feedback signal receiving trap (6) and feedback signal dispensing device (7) comprise that model is the chip of 89C51RD2, JP300 output interface and input circuit, input circuit comprises that model is 4051 gating chip, ICL7135 integration chip and 74HC244 extended chip, wherein 12～14 pin of output interface JP300 respectively with 11 pin of 89C51RD2,10 pin, 14 pin connect, 3 pin of 74HC244,5 pin, 7 pin, 9 pin, 12 pin, 14 pin, 16 pin are connected with 39～32 pin of 89C51RD2 respectively with 18 pin, 2 pin of 74HC244,4 pin, 6 pin, 8 pin, 11 pin, 13 pin, 15 pin, 17 pin then respectively with 13～16 pin of ICL7135,27～28 pin, 23 pin connect, 10 pin of ICL7135 are connected with 4051 3 pin, and 4051 2 pin connect the input end of master controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03220136 CN2600844Y (en) | 2003-02-25 | 2003-02-25 | Loop redundancy control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03220136 CN2600844Y (en) | 2003-02-25 | 2003-02-25 | Loop redundancy control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2600844Y true CN2600844Y (en) | 2004-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03220136 Expired - Fee Related CN2600844Y (en) | 2003-02-25 | 2003-02-25 | Loop redundancy control device |
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| Country | Link |
|---|---|
| CN (1) | CN2600844Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101689042B (en) * | 2007-07-12 | 2012-09-19 | 菲尼克斯电气公司 | Safety apparatus for the multichannel control of a safety device |
| CN102681435A (en) * | 2011-03-10 | 2012-09-19 | 陈丰 | Emergency controller based on automatic control system |
-
2003
- 2003-02-25 CN CN 03220136 patent/CN2600844Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101689042B (en) * | 2007-07-12 | 2012-09-19 | 菲尼克斯电气公司 | Safety apparatus for the multichannel control of a safety device |
| CN102681435A (en) * | 2011-03-10 | 2012-09-19 | 陈丰 | Emergency controller based on automatic control system |
| CN102681435B (en) * | 2011-03-10 | 2014-04-16 | 陈丰 | Emergency controller based on automatic control system |
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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: 20040121 Termination date: 20110225 |