CN105629797B - A kind of output control method and system for N number of output channel - Google Patents
A kind of output control method and system for N number of output channel Download PDFInfo
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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Abstract
The invention discloses a kind of output control method and system for N number of output channel, N is not less than 2, including：The data-signal that channel unit in open state receives corresponding control unit output carries out digital-to-analogue conversion processing, and obtained analog signals are sent to diagnosis unit；Diagnosis unit is acquired after processing and analog-to-digital conversion process analog signals and is respectively sent to each voting unit；The output signal that the digital signal and corresponding control unit that each voting unit is sent according to diagnosis unit are sent obtains the comparison result of corresponding output channel, and is respectively sent to remaining output channel；Voting result is obtained according to the comparison result of N number of output channel；The precedence information for the voting result and acquisition that each channel unit is received according to the output channel where itself respectively, the output state information of each output channel received control the opening and closing of itself.The accuracy of this method is high, and at low cost, the switch speed of output channel is fast.
Description
Technical field
The present invention relates to Data Transmission Controlling fields, more particularly to a kind of output controlling party for N number of output channel
Method and system.
Background technology
In the security system, it often requires that equipment has high reliability and high availability, that is, needs the input and output of equipment
Channel has high reliability.The method that can use many data processings for input channel puts to the vote to data, but
Output channel is needed under normal conditions to carry out output control using hardware means of voting.Also, digital output can make
Voting logic is easily taken out as needed with peripheral components, but analog output will realize that identical function is difficult to.
Output control method in the prior art realizes that three output channels are mutually redundant using three output channels,
Each output channel is made of CPU, channel unit and diagnosis unit.This method is first ranked up output channel, serial number
Smaller priority is higher；CPU calculates data after receiving output data, and according to priority sequence from high to low, really
A fixed output channel carrys out output current value, and remaining output channel will be exported no longer；The output channel passes through diagnosis unit pair
The current value of oneself output is diagnosed, if current value exceeds error range, turns off the output of this output channel, and notify it
The CPU of his output channel carries out electric current output；Otherwise, this output channel keeps electric current output state.
But this method needs each output channel to be equipped with a diagnosis unit, it is of high cost；And each output channel
Only the output of itself is diagnosed respectively, and can not diagnose whether final output is correct, and accuracy is low；Simultaneously because
The diagnosis of each output channel is independent, when having output channel failure to need to switch into row of channels, needs waiting for CPU
The diagnostic result of the signal of transmission, i.e., three output channels needs to rely on the communication cycle of CPU when interacting, therefore causes defeated
Switching can not quickly be made by going out interchannel, be become larger so as to cause live current fluctuation, or even can reach hundred Milliseconds.
Therefore, how to provide switch speed between a kind of at low cost, accuracy is high and output channel it is fast be used for N number of output
The output control method and system in channel are the current problems to be solved of those skilled in the art.
Invention content
The object of the present invention is to provide a kind of output control methods and system for N number of output channel, only pass through one
Diagnosis unit can be final to each output channel output signal whether accurately diagnose, the accuracy of diagnosis is high, subtracts
Small cost；And the signal interaction between CPU need not be carried out, the switch speed of output channel is fast.
In order to solve the above technical problems, the present invention provides a kind of output control method for N number of output channel, packet
It includes：
Channel unit in each output channel obtain respectively the output state information of output channel where itself with
And precedence information, and the output state information of itself is sent to the list of the channel in remaining output channel in addition to itself
Member；Wherein, N is not less than 2；
Channel unit in each output channel receives the data-signal of corresponding control unit output respectively, and will
The data-signal carries out digital-to-analogue conversion and handles to obtain analog signals, the channel unit root in each output channel respectively
Judge whether corresponding analog signals being sent to diagnosis unit according to the open and-shut mode of itself；
The diagnosis unit is acquired processing to the analog signals received, and to collected analog signals into
Row analog-to-digital conversion process；By treated, digital signal is respectively sent to the voting unit in each output channel；
Output signal that voting unit in each output channel is sent according to corresponding control unit and described
The digital signal that diagnosis unit is sent obtains the comparison result of each output channel, and the comparison result is sent to and is removed
Remaining output channel other than itself；
Voting unit in each output channel obtains according to the comparison result of N number of output channel each respectively
The voting result of the output channel, and the voting result is sent to corresponding channel unit；
Channel unit in each output channel respectively according to the precedence information of the output channel where itself with
And the output state information of the voting result, each output channel received controls the opening and closing of itself.
Preferably, this method further includes：
The precedence information of output channel where voting unit in each output channel obtains itself respectively, and root
Select an output channel as main output channel according to the precedence information；
Voting unit in the main output channel, which sends the channel unit in open signal to the main output channel, to be come
Its unlatching is controlled, the voting unit in remaining output channel in addition to main output channel sends shutdown signal to corresponding respectively
Channel unit controls its closing.
Preferably, the voting unit in each output channel is believed according to the output that corresponding control unit is sent
Number and the process of the digital signal comparison result that obtains each output channel that sends of the diagnosis unit be specially：
What the output signal that the control unit in each output channel is sent was sent with the diagnosis unit respectively
Digital signal is compared, and obtains the signal difference of each output channel；
Judge whether the signal difference of each output channel is more than predetermined threshold value respectively, if so, the signal difference
The comparison result for being worth corresponding output channel is mistake, and otherwise, the comparison result of the corresponding output channel of the signal difference is
Correctly.
Preferably, N takes 3.
Preferably, the voting unit in each output channel is respectively according to the comparison of N number of output channel
As a result the voting result of each output channel is obtained, and the voting result is sent to corresponding channel unit；It is each
Channel unit in the output channel is respectively according to the precedence information of the output channel where itself and the table received
Certainly result, the output state information of each output channel are specially come the process of the opening and closing controlled：
Voting unit in each output channel carries out three to the comparison result of three output channels respectively and takes
Two voting process, when being correct there are two the comparison result of the above output channel, the voting result is correct, and the table
Certainly result it can be shown that mistake output channel；When being mistake there are two the comparison result of the above output channel, the table
Certainly result is mistake；
When the voting result is correct, and indicate there are one when the output channel of mistake, it is logical according to each output
The output state information in road judges whether the channel unit in the output channel of the mistake is exporting, if it is, closing
Channel unit in the output channel of the mistake, and open in remaining output channel in addition to the output channel of the mistake
Channel unit in the higher output channel of priority；Otherwise, the opening and closing of the channel unit in three output channels is kept
State is constant；
When the voting result is correct, and indicates not having vicious output channel, three output channels are kept
In channel unit open and-shut mode it is constant；
When the voting result is mistake, the channel unit in three output channels is closed.
Preferably, this method further includes：
The voting result is sent to alarm control unit；
When the voting result is the output channel of mistake there are one the wrong or described voting result is shown, the alarm
Control unit sends alarm signal to warning device and alarms.
In order to solve the above technical problems, the present invention also provides a kind of output control system for N number of output channel, packet
It includes：
Channel unit in each output channel, the output state letter for output channel where obtaining itself respectively
Breath and precedence information, and the output state information of itself is sent to the channel in remaining output channel in addition to itself
Unit；Wherein, N is not less than 2；The data-signal of corresponding control unit output is received respectively, and the data-signal is distinguished
It carries out digital-to-analogue conversion to handle to obtain analog signals, the channel unit in each output channel is according to the open and-shut mode of itself
Judge whether corresponding analog signals being sent to diagnosis unit；Believed respectively according to the priority of the output channel where itself
It ceases and the output state information of voting result, each output channel that receives controls the opening and closing of itself；
The diagnosis unit, for being acquired processing to the analog signals received, and to collected analog quantity
Signal carries out analog-to-digital conversion process；By treated, digital signal is respectively sent to the voting list in each output channel
Member；
Voting unit in each output channel, output signal for being sent according to corresponding control unit and
The digital signal that the diagnosis unit is sent obtains the comparison result of each output channel, and the comparison result is sent
To remaining output channel in addition to itself；Each output is obtained according to the comparison result of N number of output channel respectively
The voting result in channel, and the voting result is sent to corresponding channel unit.
Preferably, N takes 3.
Preferably, it is used between the voting unit in each output channel and is wirelessly connected or is connected by bus.
The present invention provides a kind of output control method and system for N number of output channel, the diagnosis list in the present invention
Member can receive the analog signals that the channel unit in open state is sent in each output channel, therefore can be to each defeated
Go out whether the final output signal in channel is accurately diagnosed, the accuracy of diagnosis is high；And it is only diagnosed by one in the present invention
The diagnostic function of N number of output channel can be realized in unit, reduces cost；In addition, the channel unit in the present invention can be direct
Unlatching and the pass of itself are controlled according to voting result, output state information and the precedence information of output channel where itself
It closes.Therefore the signal interaction between control unit (CPU) need not be carried out, the switch speed of output channel is fast.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of flow chart of the process of output control method for N number of output channel provided by the invention；
Fig. 2 is the flow chart of the process of another output control method for N number of output channel provided by the invention；
Fig. 3 is a kind of structural schematic diagram of output control system for N number of output channel provided by the invention.
Specific implementation mode
Core of the invention is to provide a kind of output control method and system for N number of output channel, only passes through one
Diagnosis unit can be final to each output channel output signal whether accurately diagnose, the accuracy of diagnosis is high, subtracts
Small cost；And the signal interaction between CPU need not be carried out, the switch speed of output channel is fast.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment one
Shown in Figure 1 the present invention provides a kind of output control method for N number of output channel, Fig. 1 is the present invention
A kind of flow chart of the process of the output control method for N number of output channel provided；This method includes：
Step s101：The output state letter of output channel where channel unit in each output channel obtains itself respectively
Breath and precedence information, and the output state information of itself is sent to the channel in remaining output channel in addition to itself
Unit；Wherein, N is not less than 2；
Step s102：Channel unit in each output channel receives the data letter of corresponding control unit output respectively
Number, and data-signal is subjected to digital-to-analogue conversion respectively and handles to obtain analog signals, the channel unit root in each output channel
Judge whether corresponding analog signals being sent to diagnosis unit according to the open and-shut mode of itself；
Step s103：Diagnosis unit is acquired processing to the analog signals received, and to collected analog quantity
Signal carries out analog-to-digital conversion process；By treated, digital signal is respectively sent to the voting unit in each output channel；
Step s104：Output signal that voting unit in each output channel is sent according to corresponding control unit and
The digital signal that diagnosis unit is sent obtains the comparison result of each output channel, and comparison result is sent in addition to itself
Remaining output channel；
Step s105：Voting unit in each output channel obtains respectively according to the comparison result of N number of output channel respectively
The voting result of a output channel, and voting result is sent to corresponding channel unit；
Step s106：Channel unit in each output channel is believed according to the priority of the output channel where itself respectively
It ceases and the output state information of voting result, each output channel that receives controls the opening and closing of itself.
The present invention provides a kind of output control method for N number of output channel, the diagnosis unit in the present invention can
The analog signals that the channel unit in open state is sent in each output channel are received, therefore can be to each output channel
Whether final output signal is accurately diagnosed, and the accuracy of diagnosis is high；And only it is by a diagnosis unit in the present invention
The diagnostic function that N number of output channel can be achieved, reduces cost；In addition, the channel unit in the present invention can be directly according to certainly
Voting result, output state information and the precedence information of output channel where body controls the opening and closing of itself.Therefore
The signal interaction between control unit (CPU) need not be carried out, the switch speed of output channel is fast.
Embodiment two
Shown in Figure 2 the present invention also provides another output control method for being used for N number of output channel, Fig. 2 is this
Flow chart of the another kind that invention provides for the process of the output control method of N number of output channel；This method includes：
Step s201：The priority letter of output channel where voting unit in each output channel obtains itself respectively
Breath, and select an output channel as main output channel according to precedence information；
It is understood that the sequence of the priority of each output channel is determined by the hardware that output channel is located at
, i.e., when the position of each output channel after setting completed, the sequence of the priority of its own also determines therewith.For example, can be with
(i.e. precedence information also refers to compile the priority for indicating each output channel by the way that each output channel is numbered
Number information), it numbers that smaller priority is higher, selects the output channel of highest priority as main output channel.Certainly, of the invention
To whether using number form indicating that priority does not limit.
Step s202：Voting unit in main output channel, which sends the channel unit in open signal to main output channel, to be come
Its unlatching is controlled, the voting unit in remaining output channel in addition to main output channel sends shutdown signal to corresponding respectively
Channel unit controls its closing；
It is understood that having in method provided by the invention and the channel unit in an only output channel can be defeated
Go out signal.
Step s203：The output state letter of output channel where channel unit in each output channel obtains itself respectively
Breath and precedence information, and the output state information of itself is sent to the channel in remaining output channel in addition to itself
Unit；Wherein, N takes 3；
Wherein, output state information here refers to indicate whether the channel unit in output channel is exporting
Information.
Step s204：Channel unit in main output channel receives the data-signal of corresponding control unit output, and will
Data-signal carries out digital-to-analogue conversion and handles to be sent to diagnosis unit after obtaining analog signals；
Step s205：Diagnosis unit is acquired processing to the analog signals received, and to collected analog quantity
Signal carries out analog-to-digital conversion process；By treated, digital signal is respectively sent to the voting unit in each output channel；
It can be seen that the present invention can be diagnosed and controlled to the output of analog signals, wherein analog quantity here
Signal can be current signal, and certainly, the present invention is not particularly limited this；And N number of output channel is single using the same diagnosis
Member is acquired processing, can ensure the consistency for the signal that the voting unit of each output channel receives.
Step s206：What the output signal that the control unit in each output channel is sent was sent with diagnosis unit respectively
Digital signal is compared, and obtains the signal difference of each output channel；
It is understood that control unit needs output data being converted to data format that channel unit can identify again
It is sent to channel unit, similarly, control unit needs output data being converted to the data format that can identify of voting unit again
It is sent to voting unit.
Step s207：Judge whether the signal difference of each output channel is more than predetermined threshold value respectively, if so, signal difference
The comparison result for being worth corresponding output channel is mistake, and otherwise, the comparison result of the corresponding output channel of signal difference is correct；
Certainly, the present invention does not limit the concrete numerical value of predetermined threshold value, and staff can voluntarily set according to actual conditions
It is fixed.
Step s208：Comparison result is sent to remaining output channel in addition to itself；Wherein, N takes 3；
Step s209：Voting unit in each output channel carries out three to the comparison result of three output channels respectively and takes
Two voting process, when being correct there are two the comparison result of the above output channel, voting result is correct, and voting result energy
Enough indicate the output channel to make mistake；When being mistake there are two the comparison result of the above output channel, voting result is mistake；
Step s210：When voting result is correct, and indicate there are one when the output channel of mistake, it is logical according to each output
Whether the channel unit in the wrongheaded output channel of output state information in road is exporting, if it is, closing mistake
Output channel in channel unit, and open except mistake output channel in addition to remaining output channel in priority it is higher
Channel unit in output channel；Otherwise, keep the open and-shut mode of the channel unit in three output channels constant；
Step s211：When voting result is correct, and indicates not having vicious output channel, three output channels are kept
In channel unit open and-shut mode it is constant；
Step s212：When voting result is mistake, the channel unit in three output channels is closed.
It is understood that due to digital signal that each diagnosis unit for receiving of voting unit is sent be it is identical,
The output signal that each corresponding control unit for receiving of voting unit is sent also should be theoretically it is identical, it is therefore, each
The comparison result of output channel should be identical, if it is different, then showing the control unit failure or voting list that have in output channel
First failure if the comparison result of output channel is correct there are two for example, and is mistake there are one the comparison result of output channel
Accidentally, then show the control unit failure in the output channel that comparison result is wrong or voting cell failure.
Wherein, two from three voting process, that is, 3OO2 logical process in the present invention, in the processing, when there is two or more
When the situation of mistake, voting result is mistake.When there are two wrong comparison results, show that the two comparison results correspond to
Two output channels break down (control unit failure or voting cell failure)；When three wrong comparison results of appearance
When, show that corresponding three output channels of these three comparison results break down or diagnosis unit failure.Therefore when voting knot
When fruit mistake, the channel unit in three output channels of Close All is answered, stops output.
In addition, for being compared only with two output channels using three output channels, redundancy option is more, therefore can subtract
The error of small final output signal caused by output channel failure；And if using four output channels, structure mistake
In complexity, and increase cost.
Certainly, the present invention to the concrete numerical value of N and is not specially limited, when N selects other numerical value, at corresponding voting
The logic of reason should also change (as N=3, the logic of voting process is two from three or 3OO2) accordingly.
Preferably, this method further includes：
Voting result is sent to alarm control unit；
When voting result is that mistake or voting result show that alarm control unit is sent there are one when the output channel of mistake
Alarm signal to warning device is alarmed.
Wherein, alarm control unit here can be FPGA, and warning device can be display or buzzer, the present invention
The type of alarm control unit and warning device is not specially limited.
Compared with embodiment one, the present invention has carried out two from three voting process to the comparison result of each output channel, when
The error of final output signal, further improves defeated caused by capable of reducing when control unit failure or voting cell failure
The accuracy gone out；And the present embodiment is being alarmed when voting result shows vicious output channel, can make work people
Member has found that failure occurs in output channel in time, to carry out fault detect.
The present invention also provides a kind of output control systems for N number of output channel, including：
Channel unit 12 in each output channel, the output state information for output channel where obtaining itself respectively
And precedence information, and the output state information of itself is sent to the list of the channel in remaining output channel in addition to itself
Member 12；Wherein, N is not less than 2；Receive respectively corresponding control unit 11 output data-signal, and by data-signal respectively into
Line number mould conversion process obtains analog signals, and the channel unit 12 in each output channel judges according to the open and-shut mode of itself
Whether corresponding analog signals are sent to diagnosis unit 14；Respectively according to the precedence information of the output channel where itself
And the output state information of the voting result, each output channel received controls the opening and closing of itself；
Diagnosis unit 14 for being acquired processing to the analog signals received, and is believed collected analog quantity
Number carry out analog-to-digital conversion process；By treated, digital signal is respectively sent to the voting unit 13 in each output channel；
Voting unit 13 in each output channel, output signal for being sent according to corresponding control unit 11 and
The digital signal that diagnosis unit 14 is sent obtains the comparison result of each output channel, and by comparison result be sent to except itself with
Remaining outer output channel；The voting result of each output channel is obtained according to the comparison result of N number of output channel respectively, and will
Voting result is sent to corresponding channel unit 12.
Wherein, voting unit 13 here includes comparator and voting machine, and when N takes 3, the type of voting machine is two from three
Voting machine.Certainly, the unlimited tabulation of the present invention is determined the type of unit 13, and voting unit 13 can be CPU or logical device or hardware
Circuit, as long as the voting unit 13 of above-mentioned function can be realized within protection scope of the present invention.
Preferably, N takes 3.
Certainly, the present invention does not limit the concrete numerical value of N.
In addition, using being wirelessly connected or connected by bus between voting unit 13 in each output channel.
Preferably, the invention also includes：
Alarm control unit, for receiving voting result, when voting result is that mistake or voting result show that there are one wrong
When the output channel missed, sends alarm signal to warning device and alarm.
Wherein, alarm control unit here can be FPGA, and warning device can be display or buzzer, the present invention
The type of alarm control unit and warning device is not specially limited.
The present invention provides a kind of output control system for N number of output channel, the diagnosis unit in the present invention can
The analog signals that the channel unit in open state is sent in each output channel are received, therefore can be to each output channel
Whether final output signal is accurately diagnosed, and the accuracy of diagnosis is high；And only it is by a diagnosis unit in the present invention
The diagnostic function that N number of output channel can be achieved, reduces cost；In addition, the channel unit in the present invention can be directly according to certainly
Voting result, output state information and the precedence information of output channel where body controls the opening and closing of itself.Therefore
The signal interaction between control unit (CPU) need not be carried out, the switch speed of output channel is fast.
It should be noted that in the present specification, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (9)
1. a kind of output control method for N number of output channel, N number of output channel is mutually redundant, and each output channel is wrapped
Control unit and channel unit are included, for the output channel by sequence, the smaller priority of serial number is higher；It is characterised in that it includes：
Channel unit in each output channel obtains the output state information of output channel where itself and excellent respectively
First grade information, and the output state information of itself is sent to the channel unit in remaining output channel in addition to itself；Its
In, N is not less than 2；
Channel unit in each output channel receives the data-signal of corresponding control unit output respectively, and will be described
Data-signal carries out digital-to-analogue conversion and handles to obtain analog signals respectively, and the channel unit in each output channel is according to certainly
The open and-shut mode of body judges whether corresponding analog signals being sent to diagnosis unit；
The diagnosis unit is acquired processing to the analog signals received, and carries out mould to collected analog signals
Number conversion process；By treated, digital signal is respectively sent to the voting unit in each output channel；
The output signal and the diagnosis that voting unit in each output channel is sent according to corresponding control unit
The digital signal that unit is sent obtains the comparison result of each output channel, and the comparison result is sent to except itself
Remaining output channel in addition；
Voting unit in each output channel obtains according to the comparison result of N number of output channel each described respectively
The voting result of output channel, and the voting result is sent to corresponding channel unit；
Channel unit in each output channel according to the precedence information of the output channel where itself and connects respectively
The output state information of the voting result, each output channel that receive controls the opening and closing of itself.
2. according to the method described in claim 1, it is characterized in that, this method further includes：
The precedence information of output channel where voting unit in each output channel obtains itself respectively, and according to institute
Stating precedence information selects an output channel as main output channel；
Voting unit in the main output channel sends the channel unit in open signal to the main output channel to control
It is opened, and the voting unit in remaining output channel in addition to main output channel sends shutdown signal to corresponding channel respectively
Unit controls its closing.
3. according to the method described in claim 2, it is characterized in that, voting unit in each output channel according to
It is logical that the digital signal that the output signal and the diagnosis unit that corresponding control unit is sent are sent obtains each output
The process of the comparison result in road is specially：
The number that the output signal that control unit in each output channel is sent is sent with the diagnosis unit respectively
Signal is compared, and obtains the signal difference of each output channel；
Judge whether the signal difference of each output channel is more than predetermined threshold value respectively, if so, the signal difference pair
The comparison result for the output channel answered is mistake, and otherwise, the comparison result of the corresponding output channel of the signal difference is correct.
4. according to the method described in claim 3, it is characterized in that, N takes 3.
5. according to the method described in claim 4, it is characterized in that, the voting unit in each output channel is distinguished
The voting result of each output channel is obtained according to the comparison result of N number of output channel, and by the voting result
It is sent to corresponding channel unit；Channel unit in each output channel is respectively according to the output channel where itself
Precedence information and the voting result received, the output state information of each output channel control the unlatching of itself
Process with closing is specially：
Voting unit in each output channel carries out two from three table to the comparison result of three output channels respectively
It certainly handles, when being correct there are two the comparison result of the above output channel, the voting result is correct, and the voting is tied
Fruit it can be shown that mistake output channel；When being mistake there are two the comparison result of the above output channel, the voting knot
Fruit is mistake；
It when the voting result is correct, and indicates there are one when the output channel of mistake, according to each output channel
Output state information judges whether the channel unit in the output channel of the mistake is exporting, if it is, described in closing
Channel unit in the output channel of mistake, and open preferential in remaining output channel in addition to the output channel of the mistake
Channel unit in the higher output channel of grade；Otherwise, the open and-shut mode of the channel unit in three output channels is kept
It is constant；
When the voting result is correct, and indicates not having vicious output channel, keep in three output channels
The open and-shut mode of channel unit is constant；
When the voting result is mistake, the channel unit in three output channels is closed.
6. according to the method described in claim 5, it is characterized in that, this method further includes：
The voting result is sent to alarm control unit；
When the voting result is the output channel of mistake there are one the wrong or described voting result is shown, the controlling alarm
Unit sends alarm signal to warning device and alarms.
7. a kind of output control system for N number of output channel, N number of output channel is mutually redundant, and each output channel is wrapped
Control unit and channel unit are included, for the output channel by sequence, the smaller priority of serial number is higher；It is characterised in that it includes：
Channel unit in each output channel, for obtain respectively the output state information of output channel where itself with
And precedence information, and the output state information of itself is sent to the list of the channel in remaining output channel in addition to itself
Member；Wherein, N is not less than 2；Receive the data-signal of corresponding control unit output respectively, and by the data-signal respectively into
Line number mould conversion process obtains analog signals, and the channel unit in each output channel is sentenced according to the open and-shut mode of itself
It is disconnected whether corresponding analog signals to be sent to diagnosis unit；Respectively according to the precedence information of the output channel where itself
And the output state information of the voting result, each output channel received controls the opening and closing of itself；
The diagnosis unit, for being acquired processing to the analog signals received, and to collected analog signals
Carry out analog-to-digital conversion process；By treated, digital signal is respectively sent to the voting unit in each output channel；
Voting unit in each output channel, output signal for being sent according to corresponding control unit and described
The digital signal that diagnosis unit is sent obtains the comparison result of each output channel, and the comparison result is sent to and is removed
Remaining output channel other than itself；Each output channel is obtained according to the comparison result of N number of output channel respectively
Voting result, and the voting result is sent to corresponding channel unit.
8. system according to claim 7, which is characterized in that N takes 3.
9. system according to claim 7, which is characterized in that used between the voting unit in each output channel
It is wirelessly connected or is connected by bus.
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