CN105987398B - Combustion control device and combustion system - Google Patents
Combustion control device and combustion system Download PDFInfo
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- CN105987398B CN105987398B CN201610158040.8A CN201610158040A CN105987398B CN 105987398 B CN105987398 B CN 105987398B CN 201610158040 A CN201610158040 A CN 201610158040A CN 105987398 B CN105987398 B CN 105987398B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
- F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/26—Details
- F23N5/265—Details using electronic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2223/00—Signal processing; Details thereof
- F23N2223/06—Sampling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2231/00—Fail safe
- F23N2231/10—Fail safe for component failures
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Safety Devices In Control Systems (AREA)
Abstract
The present invention relates to combustion control device and combustion system, combustion control device (1) has：Output circuit (102), to the output signal (VOUT) of side's contact supply two-value of abnormality detection element (6~9)；Input circuit (103) generates the input signal (VIN) of two-value corresponding with the signal of the opposing party's contact output from abnormality detection element；Sampling portion (105), become the sampling that input signal is carried out in the first period (T1) of the first logic level (H) in output signal, and become the sampling that input signal is carried out in the second phase (T2) of the second logic level (L) in output signal；Abnormality detection element state determination unit (1061) judges the state of the supervision object of abnormality detection element according to the sampling result of first period；And fault determination unit (1062), judge that output circuit and input circuit have fault-free according to the sampling result of the second phase.According to the present invention, in Combustion System, the judgement precision of the abnormality detections elements such as interlocker is improved.
Description
Technical field
The present invention relates to a kind of combustion control devices and combustion system more particularly to one kind can carry out high-precision combustion
Burn the combustion control device of security control.
Background technology
In general, in the operation control system of combustion furnace, by combustion control device, monitoring on one side is set to combustion furnace
Flame, in-furnace temperature, the pressure of combustion air, pressure of fuel of supplied burner of burner etc. carry out burning control on one side
System, therefore ensures that the safety of burning.Specifically, combustion control device carries out such control：By the safety with combustion furnace
The reflection of the states such as relevant gas pressure, air pressure is run into the state of abnormality detection element, only in the abnormality detection element
State represent normal in the case of license combustion furnace run (referring for example to patent document 1).
Here, above-mentioned abnormality detection element refers to the connection obtained according to the state of supervision object between two contacts
And the element of the construction of a certain state in disconnecting, for example, commonly known as interlocker, limiter.As above-mentioned interlocker,
Air pressure lower limit interlocker, the gas for the supply state for monitoring fuel that the supply of combustion air is whether there is it has been known that there is such as monitoring
Body upper pressure limit interlocker and gas pressure lower limit interlocker etc..
General interlocker has this construction：Containing the switch being arranged between two contacts, according to the output of sensor
Switch the on-off of the switch.This interlocker carries out such control：When supervision object is normal, by switch connection
Between connecting two contacts, in supervision object exception, switch is disconnected so as to disconnect between two contacts.
In previous combustion control device, such as recorded in non-patent literature 1, to interlocker with above-mentioned construction
Whether the contact input pulse signal of one side from the contact of the opposing party of above-mentioned interlocker exports to sentence according to above-mentioned pulse signal
The disconnection and connection of the fixed interlocker.
Existing technical literature：
Patent document 1：Japanese Unexamined Patent Publication 2010-286128 bulletins
Non-patent literature 1：《Firing baked, Yu Ji Intraoperative The processed (uses combustion completion control with い U Application ト ロ ー ラ development safely
The exploitation of the controller of technology processed)》, bear pool hero one, azbil Technical Review, in January, 2011 distribution, Ah Zi times that
Co., Ltd..
Problems to be solved by the invention：
However, in combustion system, need that rapid to stop burning dynamic when being abnormal in the operation control system of combustion furnace
Work ensures safety, on the other hand needs to realize stable combustion event when the operation control system of combustion furnace is normal.Therefore, with
The relevant abnormality detection such as the interlocker of security control is required swiftness and high-precision.For example, the prison for such as interlocker
Depending on object (gas pressure, air pressure etc.) exception directly result in like that combustion furnace the major accidents such as explosion abnormal requirement
That detects is swiftness, and on the other hand, for failure of the peripheral circuit of interlocker etc., error detection leads to combustion event in order to prevent
Stop and require high measurement accuracy.
But above-mentioned previous interlocking determination method is that solely basis is input to Combustion System dress by interlocking
The presence or absence of pulse signal put judges come the input interlocked, it is impossible to whether there is exception to interlocking and whether there is fault progress area
Do not judge, therefore, for supervision object judgement it is swiftness perhaps very fully, but be difficult to deserve to be called for the precision of judgement
Fully.
For example, in the combustion system with combustion furnace large-scale as the steel stove of factory etc., each interlocker is being connected
In the case of reaching hundreds of meters with the wiring of combustion control device, the increase of the dead resistance ingredient of above-mentioned wiring, thus easily by
To the influence of the very noisy from power source, the frequency converter close to wiring etc..In addition, above-mentioned wiring is often stopped up by more
It is laid with, therefore, during to a wiring transmission pulse signal, which becomes noise it is possible that be induced to other wirings
Ingredient.When this noise transmission is to above-mentioned wiring, it's hard to say the determination method of previous interlocking can obtain adequately judging essence
Degree.
Invention content
It is an object of the present invention to the judgement precision of the abnormality detections elements such as interlocker is improved in Combustion System.
The combustion control device (1,10) of the present invention has：Output circuit (102), the output circuit is to according to supervision object
State obtain two contacts between connection or disconnection in a certain state abnormality detection element (6~9) a side contact supply
To the output signal (VOUT) of two-value；Input circuit (103_1~103_n), the input circuit will be from being supplied to output signal
For the signal of the contact output of the opposing party of abnormality detection element as inputting, the logic level of signal of the generation with being inputted is corresponding
Two-value input signal (DIN_1~DIN_n)；Sampling portion (105), the sampling portion become the first logic level in output signal
(H) sampling of input signal is carried out in first period (T1), and becomes the second of the second logic level (L) in output signal
The sampling of input signal, abnormality detection element state determination unit (1061), the abnormality detection element state are carried out in period (T2)
Determination unit judges the state of the supervision object of the abnormality detection element according to the sampling result of the first period in sampling portion；And
Fault determination unit (1062), the fault determination unit judge output electricity according to the sampling result of the second phase in sampling portion
Road and input circuit have fault-free.
In above-mentioned combustion control device, it is configured to：Abnormality detection element state determination unit is by referring to continuous N
The sampling value of (N be more than 2 integer) secondary first period, in the signal (VIN_1~VIN_ for detecting to input to input circuit
N) in the case where the continuous n times of the logic level of first period is the first logic levels, judge the monitoring pair of abnormality detection element
It is the second logic level in logic level continuous n times of the signal for detecting to input to input circuit in first period as normal
In the case of, judge that the supervision object of abnormality detection element is abnormal.
In above-mentioned combustion control device, it is configured to：Fault determination unit by referring to continuous M (M for 2 with
On integer) secondary second phase sampling value, in logic electricity of the signal in the second phase for detecting to input to input circuit
Flat continuous N time is in the case of the second logic level, judges that at least one party of output circuit and input circuit breaks down.
In above-mentioned combustion control device, M >=N can be set as.Moreover, M and N are arbitrary.
In above-mentioned combustion control device, it is configured to：Sampling portion is switched in output signal from the second logic level
After have passed through (Td1) at the first time after first logic level, the sampling of first period is carried out.
In above-mentioned combustion control device, it is configured to：Sampling portion is switched in output signal from the first logic level
After have passed through the second time (Td2) after second logic level, the sampling of the second phase is carried out.
In above-mentioned combustion control device, it can be set as at the first time below the second time.Moreover, at the first time and the
Two times were arbitrary.
In above-mentioned combustion control device, it is configured to：Judged with multiple by sampling portion, abnormality detection element state
The function module (110) that portion and fault determination unit are formed, each function module is by different multiple program processing apparatus
(101a, 101b) is respectively constituted.
In above-mentioned combustion control device, there can also be control unit (11), the control unit is according to abnormality detection element shape
The operation of the judgement output control burner (43) of state determination unit and fault determination unit.
The combustion system (500) of the present invention, with above-mentioned combustion control device (1) and is arranged on combustion chamber (40)
Said burner that is interior, being controlled by above-mentioned combustion control device.
In addition, in the above description, it is sub as an example, represent the inscape pair with inventing with the reference marks with parantheses
The inscape on drawing answered.
Invention effect：
By described above, according to the present invention, sentencing for the abnormality detections element such as interlocker can be improved in Combustion System
Determine precision.
Description of the drawings
Fig. 1 is the figure of the composition for the combustion system for representing to have the combustion control device involved by embodiment.
Fig. 2 is the figure of the composition for the safety control for representing the combustion control device involved by embodiment.
Fig. 3 be for illustrate the combustion control device involved by embodiment with the relevant determination processing of interlocker when
Sequence figure.
Fig. 4 is the flow with the relevant determination processing of interlocker for representing the combustion control device involved by embodiment
Flow chart.
Fig. 5 is the flow of the flow for the interlocking input determination processing for representing the combustion control device involved by embodiment
Figure.
Fig. 6 is the flow of the flow for the fault determination processing for representing the combustion control device involved by embodiment
Figure.
Fig. 7 is the safety control represented with the combustion control device involved by multiple microcontroller implementation embodiments
When configuration example figure.
Specific embodiment
In the following, with reference to attached drawing, embodiments of the present invention will be described.
(composition of combustion system)
Fig. 1 is the figure of the composition for the combustion system for representing to have the combustion control device involved by present embodiment.
Combustion system 500 shown in the figure is to make the system of burning Indoor Combustion by burner.As combustion system
500, it can be fired with large scale industries such as the steel stoves of the back yard industries such as exemplified deodorization stove and heating furnace combustion furnace, factory etc.
Burn stove.
Specifically, combustion system 500 have burner 4, fuel flow path 2, air flow circuit 3, controller 5, as different
Normal detecting element crosses heating limiter 6 and interlocker 7~9 and combustion control device 1.
Burner 4 includes temperature sensor 41,42, main burner 43, igniter 44, flame detector 45 and igniting
Device (igniter) 46.Main burner 43 is configured in combustion chamber 40, to being heated in combustion chamber 40.Igniter 44 be for
The burner of igniting main burner 43.Igniter (IG) 46 is for the device to burner ignition, including for example lighting a fire
Transformer and electrode bar generate the spark of high voltage by the ignition transformer, thus by the electrode bar to igniting
Device 44 is lighted a fire.Flame detector 45 is the device for the flame for detecting the presence of the generation of main burner 43.Temperature sensor 41 is detection
The sensor of temperature in combustion chamber 40, the measured temperature of the sensor are used for the temperature control in combustion chamber 40.Temperature
Sensor 42 is the sensor for detecting the temperature in combustion chamber 40, and the measured temperature of the sensor is used in combustion chamber 40
The detection of abnormal high temperature state.
Fuel flow path 2 is the flow path for supplying fuel to burner 4.Fuel flow path 2 is by being externally supplied fuel
Primary flow path 2a and first flow path 2b and second flow path the 2c composition from primary flow path 2a bifurcateds.First flow path 2b connects with main burner 43
It connects, second flow path 2c is connect with igniter 44.The fuel for being supplied to primary flow path 2a as a result, is fed to main burner 43 and ignites
Device 44.In addition, first flow path 2b is equipped with safety shutoff valve 21,22, second flow path 2c is equipped with safety shutoff valve 23,24.Safety is cut
Only valve 21~24 for example, by 11 control valve of burner control opening and closing.
One end of air flow circuit 3 is connect with air blower 31, and the other end is connect with first flow path 2b.It will by first flow path 2b
It is supplied together to main burner 43 from the air (air) that air blower 31 is discharged and fuel (gas).
Controller 5 is that a kind of temperature instruction adjusts meter (TIC：Temperature indicating controller),
The control signal of combustion control device is directed to so that 40 in combustion chamber according to the generation of the measured temperature of temperature sensor 41
Temperature becomes target temperature.
It is a kind of overheat preventer for being used for detecting 40 abnormal high temperature in combustion chamber to cross heating limiter 6.Cross heating limit
Device 6 processed is made of two contacts, the switch 60 being configured between the contact and switch driving part 61, which sentences
Whether the measured temperature for determining temperature sensor 42 is more than the set temperature being previously set, according to judgement output control switch 60
On-off.For example, switch driving part 61 connects switch 60 when the measured temperature of temperature sensor 42 is more than set temperature
It is logical, disconnect switch 60 when the measured temperature of temperature sensor 42 is no more than set temperature.
Interlocker (air pressure switch) 7 is set to air flow circuit 3, is a kind of sky for detecting and supplying to air flow circuit 3
The pressure of gas whether be more than set setup pressure value air pressure lower limit interlocker.Specifically, interlocker 7 is by two
The switch 70 and switch driving part 71 of contact, configuration between the contact are formed, which judges to be surveyed by sensor
Whether the air pressure in air flow circuit 3 gone out is more than the setup pressure value being previously set, according to judgement output control switch 70
On-off.For example, air pressure of the switch driving part 71 in air flow circuit 3 will switch 70 when being more than setup pressure value
It connects, the air pressure in air flow circuit 3 disconnects switch 70 when being no more than setup pressure value.
Interlocker (gas pressure switch) 8 is set to primary flow path 2a, is a kind of fuel for detecting and supplying to primary flow path 2a
Whether the pressure of (gas) is more than the gas pressure lower limit interlocker of threshold pression value being previously set.Specifically, interlocker 8
It is made of two contacts, the switch 80 being configured between the contact and switch driving part 81, which judges by passing
Whether the gas pressure in primary flow path 2a that sensor is measured is more than threshold pression value, according to connecing for judgement output control switch 80
Switching is opened.For example, gas pressure of the switch driving part 81 in primary flow path 2a connects switch 80 when being more than threshold pression value,
Gas pressure in primary flow path 2a disconnects switch 80 when being no more than threshold pression value.
Interlocker (gas pressure switch) 9 is set to first flow path 2b, is that a kind of detection is supplied to main burner 43
Whether the pressure of fuel (gas) is more than the gas pressure upper limit interlocker of pressure upper limit value being previously set.Specifically, connection
Lock device 9 is made of two contacts, the switch 90 being configured between the contact and switch driving part 91, which sentences
Whether the gas pressure in the fixed first flow path 2b measured by sensor is more than pressure upper limit value, according to judgement output control switch
90 on-off.For example, gas pressure of the switch driving part 91 in first flow path 2b will be opened when being no more than pressure upper limit value
It closes 90 to connect, switch 90 is disconnected when the gas pressure in first flow path 2b is more than pressure upper limit value.
In addition, in the following description, it sometimes will be as with according between the state of supervision object two contacts of control
It the interlocker 7~9 of the abnormality detection element of connection and the construction disconnected and crosses heating limiter 6 and is referred to as " limitation interlocking
Device ".
(composition of combustion control device)
Combustion control device 1 is the device for safely controlling the burning of the burner in combustion chamber 40.Such as Fig. 1 institutes
Show, combustion control device 1 is made of burner control 11 and safety control 10.
Burner control 11 is that one kind is controlled by controlling the operation of burner (main burner 43 and igniter 44)
The device of burning in combustion chamber 40 processed.Specifically, burner control 11 is sent out according to aftermentioned safety control 10
Instruction (notification signal 14), the flame sensing signal that sends out of the control signal that sends out of controller 5 and flame detector 45, control
Thus the opening and closing of safety shutoff valve 21~24 processed and the startup of igniter 46 carry out deferring to the master of set ignition order
The igniting of burner 43.
In addition, Fig. 1 shows a case that the tool of combustion system 500 there are one main burner 43, and have in combustion system more
In the case of a main burner, multiple burner controls can be set and this is controlled by single safety control 10
A little burner controls, the multiple burner control set for each main burner and corresponding main burner are carried out
Control.
Safety control 10 is a kind of safe operation for combustion system 500 in order to prevent combustion system 500
Explosion etc. and monitor it is each limitation interlocker state, judgement burner operation the objectionable device of license.Specifically,
Safety control 10 is according to interlocker 7~9 and crosses contact state (the disconnect or connection) generation of heating limiter 6 and represents combustion
The objectionable notification signal 14 of license of burner operation is simultaneously supplied to burner control 11, thereby indicates that burner operation
Permit and disapprove (supply and stopping to the fuel of each burner etc.).
It, can exemplified safe general rule (such as the JIS B based on industrial combustion furnace as safety control 10
8415 etc.) the limitation interlocking modules for being used for monitoring limitation interlocker of manufacture are set corresponding with above-mentioned safe general rule special
Programmable logic controller (PLC) (so-called safety PLC) with software etc..
Safety control 10 applies side's contact of each limitation interlocker pulse signal, and to joining from each limitation
The logic level of the signal of the opposing party's contact output of lock device is judged, so as to judge the state of each limitation interlocker.
Specifically, safety control 10 carries out interlocking input determination processing, interlocking input determination processing is basis
Pulse signal for the first logic level during judge from each logic level of input signal for sending out of limitation interlocker
The state of each limitation interlocker.In addition, safety control 10 carries out fault determination processing, at the fault judgement
Reason is electric for the logic of input signal sent out from each limitation interlocker during the second logic level according to pulse signal
Equal the failure to judge aftermentioned output circuit 102 and input circuit 103.
In the following, the composition and its action to safety control 10 are described in detail.
It is sub as an example in addition, in the description of the present application, by the first logic level as " high (H) level ", by the
Two logic levels are illustrated as " low (L) level ".
(composition of safety control)
Fig. 2 is the figure of the composition of the safety control 10 for the combustion control device 1 for representing embodiment.
As shown in Fig. 2, safety control 10 is by multiple external terminals, microcontroller (MCU) 101, output circuit 102, n
(n is more than 1 integer) a input circuit 103_1,103_n are formed.In addition, in fig. 2, in fig. 2, as above-mentioned multiple outer
Portion's terminal only illustrates Stateful Inspection related terminal COM, IN_1~IN_n with limitation interlocker.
Terminal COM is the external terminal for exporting aftermentioned output signal VOUT, with forming each limitation interlocker
Switch one end (side's contact) jointly connect.Such as shown in Fig. 2, terminal COM by wiring 12 respectively with interlocker 7
The contact a of a side of switch 70, the switch 80 of interlocker 8 a side contact a ... and the one of the switch 90 of interlocker 9
The contact a connections of side.In addition, be not shown in figure, but the side's contact for crossing the switch 60 of heating limiter 6 is also connected to terminal
COM。
Terminal IN_1~IN_n corresponds to each limitation interlocker setting, is that one kind is used for inputting from corresponding limitation connection
The external terminal of signal that lock device is sent out.Such as shown in Fig. 2, terminal IN_1 passes through wiring 13_1 and the switch 70 of interlocker 7
The opposing party contact b connections, terminal IN_2 connect by wiring 13_2 with the contact b of the opposing party of the switch 80 of interlocker 8,
Terminal IN_n is connect by wiring 13_n with the contact b of the opposing party of the switch 90 of interlocker 9.In addition, it is not shown in figure, still
The contact for crossing the opposing party of the switch 60 of heating limiter 6 is also connected to corresponding input terminal.
Output circuit 102 is the circuit for the output signal VOUT that generation is used for the two-value supplied to each limitation interlocker.
Specifically, output circuit 102 generates the two-value synchronous with the reference pulse signal PS that aftermentioned pulse generating unit 104 is generated
Output signal VOUT, and export and give terminal COM.
Specifically, for example as shown in Fig. 2, output circuit 102 by buffer circuit BF, photoelectrical coupler PC1, resistance R1,
And PNP transistor Q1 is formed.Output circuit 102 makes to be electrically insulated, and will be defeated from MCU101 between external terminal COM and MCU101
The pulse signal of such as 0-3.3V (or 5.0V) gone out is converted into the output signal VOUT of the two-value of such as 0V-24V and exports
Give terminal COM.For example, from MCU101 export reference pulse signal PS be H (such as 3.3V) when, connect transistor Q1 simultaneously export
The output signal VOUT of+24V, when the reference pulse signal PS exported from MCU101 is L (such as 0V), "off" transistor Q1.This
In the case of kind, if the contact connection of the limitation interlocker of access point, passes through the pull down resistor of aftermentioned input circuit 103
R3, R4 make output signal VOUT become 0V.On the other hand, if the contact of the limitation interlocker of access point disconnects, terminal
COM becomes high resistance.
Input circuit 103_1~103_n corresponds to each limitation interlocker setting.Input circuit 103_1~103_n (systems
It is known as " input circuit 103 " during title) it will export from corresponding each limitation interlocker and (be referred to as to corresponding terminal IN_1~IN_n
When be known as " terminal IN ") signal VIN_1~VIN_n (during general designation be known as " signal VIN ") as input, generation is with being inputted
Input signal DIN_1~DIN_n (being known as " input signal DIN " during general designation) of the corresponding two-value of logic level of signal VIN.Example
Such as, Fig. 2 shows circuits below：The signal exported by terminal IN_1 inputs from the opposing party's contact b of the switch 70 of interlocker 7
The input circuit 103_1 of VIN_1；The signal exported by terminal IN_2 inputs from the opposing party's contact b of the switch 80 of interlocker 8
The input circuit 103_2 of VIN_2；And exported by terminal IN_n inputs from the opposing party's contact b of the switch 90 of interlocker 9
The input circuit 103_n of signal VIN_n.In addition, be not shown in figure, but the opposing party of the switch 60 from the limiter 6 that heats up excessively
The signal of contact output is also input to corresponding input circuit.
Specifically, input circuit 103 is for example made of resistance R2~R4 and photoelectrical coupler PC2 as shown in Figure 2.It is defeated
Entering circuit 103 makes to be electrically insulated between corresponding terminal IN and MCU101, and will enter into such as 0V-24V of corresponding terminal IN
The signal of two-value be converted into the input signal DIN of such as 0V-3.3V (or 5.0V) and export to MCU101.Here, resistance
The output signal of the resistance value of R3, R4 output H level (such as 24V) in the state of the contact connection of each limitation interlocker
It is adjusted during VOUT, so that the photodiode of the primary side of photoelectrical coupler PC2 is connected.
MCU101 is formed such as the processor by CPU, various memories and other peripheral circuits.MCU101 passes through upper
It states processor and data processing is performed according to the program that above-mentioned memory is stored, so as to as pulse generating unit 104, sampling portion
105th, determination unit 106 and notification unit 107 play a role.
Pulse generating unit 104 is generation for interlocker 7~9 and the benchmark arteries and veins for the Stateful Inspection for crossing heating limiter 6
Rush the function part of signal PS.Specifically, pulse generating unit 104 be one kind for example by being occurred by crystal oscillator isochronon
The reference clock signal of device generation is divided, so as to generate the function in defined period and duty ratio reference pulse signal PS
Portion.Reference pulse signal PS is, for example, the 0V-3.3V (5.0V) based on MCU101 supply voltages (such as 3.3V or 5.0V) generation
Two-value signal.
Sampling portion 105 is that the input signal DIN_1~DIN_n generated by input circuit 103_1~103_n is carried out respectively
The function part of sampling.Sampling portion 105 and the reference clock signal that is generated by pulse generating unit 104 synchronize be sampled processing.Tool
It says to body, sampling portion 105 is during output signal VOUT (said reference pulse signal PS) is the first logic level (H level)
T1 carries out the sampling of input signal DIN, and is the second logic level in output signal VOUT (said reference pulse signal PS)
T2 carries out the sampling of input signal DIN during (L level).In addition, the sampling for each input signal DIN_1~DIN_n, takes
Sample portion 105 can be carried out with timesharing, and multiple input signal can also be sampled simultaneously.
Determination unit 106 includes interlocking input determination unit 1061, and interlocking input determination unit 1061 is as according to sampling portion 105
In period T1 sampling result judgement it is each limitation interlocker have abnormality detection element state determination unit without exception.In addition,
Determination unit 106 further includes the judgement output circuit 102 of the sampling result in period T2 and input circuit 103 according to sampling portion 105
There is trouble-free fault determination unit 1062.
Notification unit 107 according to the generation of the judgement result of determination unit 106 represent it is above-mentioned represent license that burner runs and
Objectionable notification signal 14.
For example, when being " normal " by the interlocking input judgement limitation interlocker of determination unit 1061, generation expression burning
The notification signal 14 of " license " of device operation.In addition, when being determined as by fault determination unit 1062 " without fault "
When, generation represents the notification signal 14 of " license " of burner operation.On the other hand, sentence when by interlocking input determination unit 1061
When definite limitation interlocker is "abnormal", generation represents the notification signal 14 of " disapproving " of burner operation.In addition, when passing through
When fault determination unit 1062 is determined as " having fault ", generation represents the notification signal of " disapproving " of burner operation
14。
(action of safety control)
In the following, illustrate combustion control device 1 with the associated determination processing of interlocker (interlocking input determination processing with
And fault determination processing).
In addition, in the combustion control device 1 of present embodiment, because being carried out at identical judgement to each limitation interlocker
Reason so in the following description, pair carries out representative explanation with 7 associated determination processing of interlocker, pair with other limitations
The associated determination processing of interlocker omits the description.
Fig. 3 is the sequence diagram with the relevant determination processing of interlocker for illustrating the combustion control device of embodiment.
The uppermost of Fig. 3 represents the voltage (output signal VOUT) of terminal COM, and upper several second segments of Fig. 3 represent the contact of interlocker 7
State (connection disconnects), upper several third segment tables of Fig. 3 show that the voltage for being input to terminal IN_1 (is input to input circuit 103_
1 signal VIN_1), the lowermost of Fig. 3 represents the input signal DIN_1 of input circuit 103_1 generations.
In addition, the waveform of upper several second segments of Fig. 3 represents that switch 70 is connected in high level, contact a, b of interlocker 7 connect
Logical, switch 70 disconnects when waveform shown in Fig. 3 is expressed as low level, and contact a, b of interlocker 7 are disconnected.
As shown in figure 3, pulse generating unit 104 generates the reference pulse signal PS of some cycles TC, then with the reference pulse
The output signal VOUT that signal PS is synchronized is exported from terminal COM.Here, said reference pulse signal PS and output signal VOUT
Logic level is consistent.
Output signal VOUT from terminal COM export when, if the switch 70 of interlocker 7 connects (contact connection), export letter
Number VOUT is input to input circuit 103_1 via switch 70.In this case, institute during t0 to t1 at the time of such as such as Fig. 3
Show, the signal VIN_1 synchronous with output signal VOUT is input into terminal IN_1, is generated and exported by input circuit 103_1
The input signal DIN_1 of logic opposite signal VOUT.
On the other hand, output signal VOUT from terminal COM export when, if the contact of interlocker 7 disconnects (switch 70 disconnect),
Then input circuit 103_1 does not have output signal VOUT inputs.At this moment, terminal IN_1 passes through resistance R3, R4 bottoms to ground voltage
(0V), therefore the voltage (signal VIN_1) of terminal IN_1 becomes " 0V ", input signal DIN_1 becomes " H " level.For example, as schemed
At the time of 3 during t1 to t2 shown in, when the contact of interlocker 7 disconnects, no matter the logic level of output signal VOUT how,
Input signal DIN_1 can become " H " level.
In addition, in the state of the contact connection of interlocker 7, in the generation electricity of the transistor Q1 of such as output circuit 102
During the short trouble of source, the secondary side phototransistor of the photoelectrical coupler PC2 of input circuit 103_1 occur earth fault when, it is defeated
Enter signal DIN_1 to be fixed to " L level ".For example, the photoelectrical coupler in moment t3 input circuit 103_1 is shown in Fig. 3
The feelings that the later input signal DIN_1 of earth fault, moment t3 is fixed to L level occur for the secondary side phototransistor of PC2
Condition.
In the following, the sampling processing to sampling portion 105 illustrates.
Sampling portion 105 is T1 during " H level " to input signal DIN_1 in output voltage VO UT (reference clock signal)
Sampling.For example, as shown in figure 3, the sampling moment SI1 of T1 samples (sampling value to input signal DIN_1 during first time：
L), the sampling moment SI2 of T1 samples (sampling value to input signal DIN_1 during second time：L) ... ... and so on, it is right
The input signal DIN_1 samplings of each period T1.
In addition, sampling portion 105 is T2 during " L level " to input signal in output voltage VO UT (reference clock signal)
DIN_1 is sampled.For example, as shown in figure 3, the sampling moment SC1 of T2 (takes input signal DIN_1 samplings during first time
Sample value：H), the sampling moment SC2 of T2 samples (sampling value to input signal DIN_1 during second time：H) ... ... with such
It pushes away, input signal DIN_1 is sampled in each period T2.
Preferably, the sampling in above-mentioned sampling portion 105 switches in the logic level of output voltage VO UT (reference clock signal)
Later, by being carried out after the stipulated time.For example, as shown in Figure 3, it is preferable that the sampling of period T1 is in output voltage VO UT (bases
Clock signal) be switched to after " H level " from " L level " have passed through after stipulated time td1 during Ts1 carry out.In addition,
Preferably, the sampling of period T2 is passed through after output voltage VO UT (reference clock signal) is switched to " L level " from " H level "
Ts2 is carried out during after stipulated time td2.Output voltage VO UT or reference clock letter are transmitted and export for example, setting
Number delay circuit (CR circuits or multistage clock circuit etc.), sampling portion 105 using from the signal that the delay circuit exports to open
Dynamic signal starts sampling processing.Alternatively, setting using the logic switch of output voltage VO UT or reference clock signal as
Triggering carries out timing, a timing to stipulated time with regard to the timer of output signal, letter of the sampling portion 105 to be exported from the timer
Number for enabling signal start sampling processing.
As a result, as described above, even if connecting safety control 10 and each wiring 12,13 for limiting interlocker very
In the case that long, parasitic resistance components are very big, because can be sampled after the voltage stabilization of input signal DIN,
It can inhibit the decline for being related to the precision of the judgement of interlocking.
In addition, about stand-by time Td1, Td2 sampled to after the switching of the logic level of output signal VOUT, only
Consider that the transit time until signal stabilization caused by dead resistance ingredient of wiring 12,13 etc. suitably sets i.e.
It can.For example, by being set as Td1 ＜ Td2, quickly detect the supervision object of interlocker have it is without exception, and for be it is permanent therefore
The fault of barrier, the signal transmitted in the wiring are sampled after more stablizing, and thus, it is possible to carry out sentencing for higher precision
It is fixed.
In addition, one can only be carried out in period T1, T2 to the sampling of an input signal DIN in period T1 and period T2
It is secondary, it can also be carried out in period T1, T2 repeatedly.
In the following, the interlocking input determination processing to interlocking input determination unit 1061 illustrates.
(N is the continuous N of sampling value of input signal DIN of the interlocking input determination unit 1061 during sampling portion 105 in T1
More than 2 integer) it is subuniform in the case of, the supervision object according to consistent logic level judgement limitation interlocker is
" normal " or "abnormal".
More specifically, interlocking input determination unit 1061 is continuously mutual to the sampling value of the input signal DIN in period T1
Consistent number is counted, when the consistent number of the counting is n times, just using sampling value consistent at this time as input signal
The determining value of the logic level of DIN.For example, in figure 3, the input signal DIN_1 of sampling moment SI1~SIN of continuous n times
Sampling value with " L level " it is consistent with each other in the case of, the logic level of input signal DIN_1 is determined as " L ", continuous N
The sampling value of the input signal DIN_1 of secondary sampling moment SI1~SIN with " H level " it is consistent with each other in the case of, will input letter
The logic level of number DIN_1 is determined as " H ".Moreover, interlocking input determination unit 1061 is in its situation of the value of determining for " H level "
Under, two contacts for judging limitation interlocker corresponding with input signal DIN are "off", i.e. judgement and the input signal
The supervision object of the corresponding limitation interlockers of DIN is "abnormal".On the other hand, in the case where its value of determining is " L level ",
Two contacts of the interlocking input judgement of determination unit 1061 limitation interlocker corresponding with input signal DIN are " connection ", that is, are sentenced
The supervision object of fixed limitation interlocker corresponding with input signal DIN is " normal ".
In the following, the fault determination processing to fault determination unit 1062 illustrates.
Input signal DIN of the fault determination unit 1062 in period T2 sampling value continuous N (M be more than 2 it is whole
Number) secondary at least one party's generation " failure " in the case of " L level ", to judge input circuit 103 and output circuit 102.More
Say to body, fault determination unit 1062 to the sampling value of the input signal DIN in period T2 continuously for " L level " number into
Row counts, and when which is " M ", judges that " failure " occurs for at least one party of input circuit 103 and output circuit 102.
For example, as shown in figure 3, ground connection event occurs for the secondary side in the photoelectrical coupler PC2 of moment t3 input circuit 103_1
Unrelated with signal VIN_1 during barrier, input signal DIN_1 after that is fixed to " L level ".In this case, fault
Determination unit 1062 after the moment t3 during the sampling value of input signal DIN of T2 be continuously the number of " L level " be " M "
When, judge that " failure " occurs for at least one party of input circuit 103 and output circuit 102.
In addition, interlocking is inputted used in the consistent times N of sampling value and fault determination processing used in determination processing
The consistent number M of sampling value can be according to type, required safe class of the combustion system for being applicable in combustion control device 1 etc.
To adjust.For example, by being set as N ＜ M, the quick supervision object for detecting interlocker have it is without exception, and for for permanent fault
Fault, can frequently stop because of error detection caused by noise etc. to avoid combustion event.
In the following, combustion control device and the flow of interlocker relevant determination processing are illustrated.
Fig. 4 is the flow with the flow of the relevant determination processing of interlocker for the combustion control device for representing embodiment
Figure.
As described above, combustion control device 1 includes the sampling value based on period T1 with the relevant determination processing of interlocker
Determination processing (interlocking input determination processing) and sampling value based on period T2 determination processing (at fault judgement
Reason).
As shown in figure 4, combustion control device 1 with the relevant determination processing of interlocker at the beginning, then first pulse generate
Portion 104 generates reference pulse signal PS, and output circuit 102 generates the output signal VOUT synchronous with reference pulse signal PS
(S1).Here, it is set at the time of performing determination processing relevant with interlocker for each limitation interlocker.For example, one
The determination processing of partial limitation interlocker performs when after combustion system 500 starts often, others limitation interlocker
Determination processing combustion system 500 startup after presetting at the time of perform.
Then, sampling portion 105 proceeds by the sampling (S2) of input signal DIN_1~DIN_n.The sampling in sampling portion 105
At the beginning, then determination processing, the i.e. interlocking that the sampling value that determination unit 1061 starts based on period T1 is inputted by interlocking is inputted and is sentenced
Fixed processing (S3).In addition, the determination processing of the sampling value of period T2 is also started based on by fault determination unit 1062, i.e., it is electric
Road fault verification processing (S4).Step S3, each determination processing one of S4 performs, then is exported for burner control 11 and represent combustion
The license of burner operation or objectionable notification signal 14.
In addition, the determination processing of the sampling value based on period T2 of step S4 can as shown in Figure 4 step S3 based on
It performs after the determination processing of the sampling value of period T1, base that can also be after the sampling in sampling portion 105 starts with step S3
It is performed simultaneously in the determination processing of the sampling value of period T1.
In the following, the fault determination processing of the interlocking input determination processing and step S4 of detailed description step S3 is each
From flow.
First, the flow of the interlocking input determination processing of step S3 is illustrated.
Fig. 5 is the flow of the flow for the interlocking input determination processing for representing the combustion control device involved by embodiment
Figure.
As shown in figure 5, when starting sampling in step s 2, then input determination unit 1061 is interlocked to the sampling value in period T1
Continuous consistent number is counted (S31).After above-mentioned counting starts, interlocking input determination unit 1061 judges that sampling portion 105 exists
Whether the sampling value of period T1 is that continuous n times are consistent (S32).Here, it be not interlocking input under continuous n times unanimous circumstances
Determination unit 1061 continues to count the consistent number of the sampling value in period T1 in sampling portion 105.Further, it is also possible to it controls
Into：Under because of noise etc. without generating continuous n times unanimous circumstances, after a time has passed, determining value is set as
" H (disconnection) ".
On the other hand, in step s 32, in the continuous n times unanimous circumstances of the sampling value in period T1 in sampling portion 105
Under, interlocking input determination unit 1061 judges whether its sampling value is " L " (S33).
In the case that the sampling value of T1 is " H " during continuous n times are consistent in step S33, interlocking input determination unit
The contact "off" of 1061 judgements limitation interlocker corresponding with the input signal DIN sampled, judges that the limitation interlocks
The supervision object "abnormal" (S36) of device.Notification unit 107 inputs the judgement result of determination unit 1061 to burning according to interlocking as a result,
The output of device controller 11 represents the notification signal 14 (S37) of " disapproving " of burner operation.
On the other hand, in the case that the sampling value of T1 is " L " during continuous n times are consistent in step S33, interlocking
The contact " connection " of the judgement of determination unit 1061 limitation interlocker corresponding with the input signal DIN sampled is inputted, judgement should
Limit the supervision object " normal " (S34) of interlocker.Notification unit 107 inputs the judgement of determination unit 1061 according to interlocking as a result,
As a result the notification signal 14 (S35) of " license " that represents burner operation is exported to burner control 11.
In the following, the flow of the fault determination processing of step S4 is described in detail.
Fig. 6 is the flow of the flow for the fault determination processing for representing the combustion control device involved by embodiment
Figure.
By step S2, at the beginning, then fault determination unit 1062 is to the sampling value of period T2 for the sampling in sampling portion 105
The continuous number for " L " is counted (S41).At this moment, the weight when the sampling value of period T2 is " H " of fault determination unit 1062
It puts count value and starts counting up action again later.
After above-mentioned counting starts, the sampling value of T2 is continuously the number of " L " during fault determination unit 1062 judges
Whether more than M times (S42).
In step S42 in the case where the number that the sampling value of period T2 is continuously " L " is more than M times, fault is sentenced
Determine portion 1062 to judge " circuit is faulty " (S43).Judgement result of the notification unit 107 based on fault determination unit 1062 as a result,
The notification signal 14 (S44) of " disapproving " for representing burner operation is exported to burner control 11.
On the other hand, it is continuously situation of the number of " L " no more than M times in the sampling value of period T2 in step S42
Under, fault determination unit 1062 judges " circuit does not have failure " (S45).In this case, step S41 is turned again to, is continued
Counting action of the sampling value of T2 for the number of " L " during sampling.
(effect of combustion control device)
More than, combustion control device according to the present invention, in supply to the output signal VOUT (arteries and veins of each limitation interlocker
Punching) high period between carry out interlocking input judgement, between the low period of output signal VOUT carry out fault judgement, because
This, can carry out difference judgement to the exception of the peripheral circuit of the exception and interlocker of the supervision object of interlocker, can improve
In relation to the judgement precision interlocked.
In addition, combustion control device according to the present invention, is inputing to the output signal VOUT's of each limitation interlocker
Under the sampling value continuous several times unanimous circumstances of input signal DIN between high period or between low period, by the sampling value
The determining value of input signal DIN is set as, determines that value carries out interlocking input judgement and fault judges based on this.As a result, for example
In the case of being overlapped noise in the signal even transmitted in wiring 12,13, misinterpretation is also difficult to happen caused by noise, energy
It is enough that the judgement precision in relation to interlocking is inhibited to decline.
In addition, the sampling in sampling portion 105 output voltage VO UT (reference clock signal) logic level switching after by
It is carried out after stipulated time Td1 (Td2), therefore, even if as described above, in connection safety control 1 and each limitation connection
The signal that the parasitic resistance components of the wiring 12,13 of lock device are transmitted very greatly, in wiring 12,13 reaches the stable feelings for needing the time
Under condition, because can be sampled after the voltage stabilization of input signal DIN, the judgement essence in relation to interlocking can be inhibited
Degree declines.
In addition, combustion control device according to the present embodiment, as described above, using the benchmark judged as fault
The consistent number M of sampling value is set as the numerical value bigger than the consistent times N of the sampling value of the benchmark as interlocking input judgement, makes electricity
The detection sensitivity of road fault verification is lower than the detection sensitivity of interlocking input judgement, and thereby, it is possible to quickly detect chain prison
Depending on the exception of object, carry out it is rapidly explosion-proof, on the other hand, for permanent fault, can to avoid combustion event because
The mode frequently stopped for error detection caused by the influence of noise is controlled.That is, can ensure the abnormality detection of interlocking
It is swiftness, and realize the high precision int of fault detection relevant with permanent anomaly, the peace of Combustion System can be obtained
The full raising of property and the raising of operating stably.
In addition, by start sampling until stand-by time be set as Td1 ＜ Td2, as a result, with it is described above, energy
Enough ensure the swiftness of the abnormality detection of interlocking and obtain the higher precision of fault detection.
From the foregoing it may be appreciated that the combustion control device involved by present embodiment is useful in connection safety control 1
Very big this large-scale combustion furnace especially has with 12,13 very long, wiring the technology resistance components of wiring of each limitation interlocker
Effect.
More than, the invention that inventor is done specifically is understood based on embodiment, but the present invention is not limited thereto,
It is self-evident that can make various changes within the scope of its spirit.
For example, in the above-described embodiment, the exemplified feelings with a microcontroller implementation combustion control device 1
Condition, but it is also possible to be realized with multi-microprocessor.
Fig. 7 is the safety control represented with the combustion control device involved by multiple microcontroller implementation embodiments
When configuration example figure.
As shown in fig. 7, equipped with main microprocessor (MCU_M) 101a and pair microprocessor (MCU_S) 101b, in each microprocessor
Device 101a, 101b are respectively equipped with sampling portion 105, determination unit 106 and notification unit 107, the input that thus will limit interlocker
The function module of judgement and fault judgement makes tediously longization composition.
Even if undesirable in side's microprocessor generation as a result, also can interlocking be performed by the opposing party's microprocessor
Input determination processing and fault determination processing, therefore the safety and burning of combustion system 500 can be further improved
The safety of action.
In addition, in this case, pulse generating unit 104 is positioned only at appointing in microprocessor 101a and microprocessor 101b
One side.For example, the situation that pulse generating unit 104 is provided on main microprocessor 101a is shown in FIG. 7.Such case
Under, reference pulse signal PS is supplied from main microprocessor 101a to secondary microprocessor 101b, and secondary microprocessor 101b is according to the base
It is sampled at the time of quasi- pulse signal PS.
In addition, in the figure 7, exemplified situation of the setting there are two microprocessor, but not limited to this, can also set
The microprocessor of three or more is put, corresponding each microprocessor setting carries out input judgement and the fault of limitation interlocker
The function module of judgement.
In addition, in the above-described embodiment, as abnormality detection element (the limitation connection being connect with combustion control device 1
Lock device) an example, exemplified air pressure lower limit interlocker, gas pressure upper limit lower limit interlocker and crossing rise
Warm limiter, but other abnormality detection elements can similarly be applicable in the combustion control device 1 involved by the present application
Input determination processing, this is self-evident.
In addition, in fig. 2, exemplified output circuit 102 and input circuit 103 have the electricity using photoelectrical coupler
The situation of line structure, but the circuit structure of output circuit 102 and output circuit 103 is not limited thereto.For example, in outer end
In the case of sub- COM, IN_1~do not need to electrical isolation between IN_n and MCU101, output circuit 102 can be made not by
The circuit structure of photoelectrical coupler PC1 and the output signal driving transistor Q1 based on buffer circuit BF.Further, it is also possible to by defeated
Enter circuit 103 and make following circuit structure：It is set between one end of ground nodes and resistance R2 instead of photoelectrical coupler PC2
Transistor, in the connecting node of coordination electrode (base stage) the connection resistance R3 and resistance R4 of the transistor.
Symbol description：
1 ... combustion control device, 2 ... fuel flow paths, 3 ... air flow circuits, 4 ... burners, 5 ... controllers, 6 ..., which are crossed, to rise
Warm limiter, 7,8,9 ... interlockers, 10 ... safety controls, 11 ... burner controls, 14 ... notification signals, 40 ... combustions
Burn room, 41,42 ... temperature sensors, 43 ... main burners, 44 ... igniters, 45 ... flame detectors, 46 ... igniters (point
Firearm), 60,70,80,90 ... switches, 61,71,81,91 ... switch driving parts, 31 ... air blowers, 2a ... primary flow paths, 2b ...
One flow path, 2c ... second flow paths, 21,22,23,24 ... safety shutoff valves, COM, IN_1, IN_n ... terminal, 12,13,13_1,
13_n ... wirings, 101,101a, 101b ... microcontrollers, 102 ... output circuits, 103,103_1,103_n ... input circuits,
104 ... pulse generating units, 105 ... sampling portions, 106 ... determination units, 1061 ... interlocking input determination units, 1062 ... faults are sentenced
Determine portion, 107 ... notification units, 110 ... functional blocks, PS ... reference pulse signals, 500 ... combustion systems.
Claims (10)
1. a kind of combustion control device, which is characterized in that have：
Output circuit, to the output signal of the contact supply two-value of a side of abnormality detection element, this is examined the output circuit extremely
Survey a certain state of the element in the connection or disconnection between the state of supervision object two contacts of acquirement；
Input circuit, the input circuit will be from the institutes of the opposing party for the abnormality detection element for being supplied with the output signal
The signal of contact output is stated as input, generates the input signal of the corresponding two-value of logic level of signal with being inputted；
Sampling portion, the sampling portion carry out the input signal in the output signal becomes the first period of the first logic level
Sampling, and become in the output signal and the sampling of the input signal carried out in the second phase of the second logic level,
Abnormality detection element state determination unit, the abnormality detection element state determination unit is according to the continuous n times in the sampling portion
The first period sampling result judge the abnormality detection element supervision object state, wherein, N is more than 2
Integer；And
Fault determination unit, the fault determination unit is according to second phase M times continuous in the sampling portion
Sampling result judges the output circuit and the input circuit has fault-free, and wherein M is more than 2 integer.
2. combustion control device according to claim 1, which is characterized in that
The abnormality detection element state determination unit by referring to the first period of the continuous n times sampling value,
Detect that the signal for inputing to the input circuit is electric for first logic in the continuous n times of logic level of the first period
In the case of flat, judge that the supervision object of the abnormality detection element is normal, in the letter for detecting to input to the input circuit
Number the first period the continuous n times of logic level in the case of second logic level, to judge the abnormality detection
The supervision object of element is abnormal.
3. combustion control device according to claim 2, which is characterized in that
The fault determination unit by referring to second phase M times continuous sampling value, detect it is defeated
Enter the situation that logic level continuous N time of the signal in the second phase to the input circuit is second logic level
Under, judge that the output circuit and at least one party of the input circuit break down.
4. combustion control device according to claim 3, which is characterized in that
M≥N。
5. combustion control device according to any one of claim 1 to 4, which is characterized in that
The sampling portion have passed through after the output signal is switched to first logic level from second logic level
After first time, the sampling of the first period is carried out.
6. combustion control device according to claim 5, which is characterized in that
The sampling portion have passed through after the output signal is switched to second logic level from first logic level
After second time, the sampling of the second phase is carried out.
7. combustion control device according to claim 6, which is characterized in that
The first time is below second time.
8. combustion control device according to any one of claim 1 to 4, which is characterized in that
It is made of with multiple the sampling portion, the abnormality detection element state determination unit and the circuit determination unit
Function module,
Each function module is respectively constituted by different multiple program processing apparatus.
9. combustion control device according to any one of claim 1 to 4, which is characterized in that
Also there is control unit, the control unit is according to the abnormality detection element state determination unit and the fault determination unit
Judge the operation of output control burner.
10. a kind of combustion system, which is characterized in that have：
Combustion control device described in claim 9；And
The burner that setting controls in the combustion chamber, by the combustion control device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-054420 | 2015-03-18 | ||
| JP2015054420A JP6383310B2 (en) | 2015-03-18 | 2015-03-18 | Combustion control device and combustion system |
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| Publication Number | Publication Date |
|---|---|
| CN105987398A CN105987398A (en) | 2016-10-05 |
| CN105987398B true CN105987398B (en) | 2018-07-03 |
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| CN201610158040.8A Active CN105987398B (en) | 2015-03-18 | 2016-03-18 | Combustion control device and combustion system |
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| Country | Link |
|---|---|
| US (1) | US20160273768A1 (en) |
| EP (1) | EP3070405A1 (en) |
| JP (1) | JP6383310B2 (en) |
| CN (1) | CN105987398B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3594788A (en) * | 1967-12-27 | 1971-07-20 | Combustion Eng | Sensor testing device |
| US4974179A (en) * | 1989-01-27 | 1990-11-27 | Honeywell Inc. | Method and apparatus for preventing race conditions in a control system |
| WO1999045325A1 (en) * | 1998-03-06 | 1999-09-10 | A. Theobald S.A. | Device for actively regulating air/gas ratio in a burner comprising a differential pressure measuring device |
| CN101900775A (en) * | 2009-05-28 | 2010-12-01 | 株式会社山武 | System for sending signals between modules |
| CN101922730A (en) * | 2009-06-09 | 2010-12-22 | 株式会社山武 | Combustion furnace control apparatus |
| CN102207293A (en) * | 2010-03-30 | 2011-10-05 | 株式会社山武 | Control system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4295129A (en) * | 1979-05-07 | 1981-10-13 | Electronics Corporation Of America | System condition indicator |
| JPH11262076A (en) * | 1998-03-12 | 1999-09-24 | Fujitsu Ltd | Supervisory system for supervisory equipment |
| JP5979086B2 (en) * | 2013-06-06 | 2016-08-24 | 株式会社デンソー | Supervisory circuit |
-
2015
- 2015-03-18 JP JP2015054420A patent/JP6383310B2/en active Active
-
2016
- 2016-03-15 EP EP16160278.4A patent/EP3070405A1/en not_active Withdrawn
- 2016-03-17 US US15/073,099 patent/US20160273768A1/en not_active Abandoned
- 2016-03-18 CN CN201610158040.8A patent/CN105987398B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3594788A (en) * | 1967-12-27 | 1971-07-20 | Combustion Eng | Sensor testing device |
| US4974179A (en) * | 1989-01-27 | 1990-11-27 | Honeywell Inc. | Method and apparatus for preventing race conditions in a control system |
| WO1999045325A1 (en) * | 1998-03-06 | 1999-09-10 | A. Theobald S.A. | Device for actively regulating air/gas ratio in a burner comprising a differential pressure measuring device |
| CN101900775A (en) * | 2009-05-28 | 2010-12-01 | 株式会社山武 | System for sending signals between modules |
| CN101922730A (en) * | 2009-06-09 | 2010-12-22 | 株式会社山武 | Combustion furnace control apparatus |
| CN102207293A (en) * | 2010-03-30 | 2011-10-05 | 株式会社山武 | Control system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016173222A (en) | 2016-09-29 |
| JP6383310B2 (en) | 2018-08-29 |
| US20160273768A1 (en) | 2016-09-22 |
| EP3070405A1 (en) | 2016-09-21 |
| CN105987398A (en) | 2016-10-05 |
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