CN106444922B - A kind of intelligent electric cable joint operation field heating controller and control method - Google Patents
A kind of intelligent electric cable joint operation field heating controller and control method Download PDFInfo
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- CN106444922B CN106444922B CN201610929369.XA CN201610929369A CN106444922B CN 106444922 B CN106444922 B CN 106444922B CN 201610929369 A CN201610929369 A CN 201610929369A CN 106444922 B CN106444922 B CN 106444922B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
- G05D23/32—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature with provision for adjustment of the effect of the auxiliary heating device, e.g. a function of time
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Abstract
The present invention relates to a kind of intelligent electric cable joint operation field heating controller and control methods；The heating controller includes：Three sets of identical control temperature unit collection, communication device；Wherein, a set of control temperature unit collection includes：Temperature control module, first sensor, second sensor, heater, alarm；The first input end of first sensor and temperature control module connects；Second input terminal of second sensor and temperature control module connects；First output end of heater and temperature control module connects；Alarm is connect with the second output terminal of the temperature control module；Third input terminal, the 4th input terminal, third output end, the 4th output end for the temperature control module that communication device is concentrated by 485 buses and three sets of control temperature units are connect；The present invention provides a kind of intelligent electric cable joint heating controller with temperature protection and guardtime function, integrates three sets of control temperature unit collection, and the concentration heated for controlling temperature of three bell and spigot joints in geared cable construction can carry out unified monitoring, integrated level is high, securely and reliably.
Description
Technical field
The present invention relates to a kind of intelligent electric cable joint operation field heating controller and control methods.
Background technology
Cable connector engineer operation scene generally use heating tape is directly heated, and is observed using separate unit temperature control table
With control temperature.Attached drawing 1 is referred to, is the primary structure of separate unit temperature control table, including：Sensor 10, temperature control table 20, relay
30, heater 40.Make to be heated and controlled in this way, have the following disadvantages：First, the controller architecture list
One, when sensor failure, for example sensor falls off from tested article, then sensor feedback to temperature control table signal always not
Reach set temperature, to make heater be constantly in heated condition, at this point, to be susceptible to temperature excessively high for the temperature of tested article
The case where, to cause whole cabling circuit to damage.Secondly, the controller alarm free function needs staff existing
The whole post in field is be easy to cause once control point is more or disperses since personnel neglect the accident of initiation.Finally, the controller
Without communication function, temperature control effect can only check nearby, once measured object be in eminence, tunnel depths or other be not easy at arrival,
It will bring potential danger to live attending personnel, such as tumble injury, pernicious gas, airborne dust, collide with.
Invention content
The purpose of the present invention is to provide a kind of intelligent electric cable joint operation field heating controller and control method, collection
The concentration heated for controlling temperature of three bell and spigot joints in constructing at three sets of control temperature unit collection geared cables, integrates three sets of control temperature unit collection, realizes
Intelligent heating controller with automatic temperature-adjusting protection and guardtime, and remote control and data acquisition can be carried out.
To achieve the goals above, the technical scheme is that, a kind of heating control of intelligent electric cable joint operation field
Device processed, which is characterized in that include：
Three sets of identical control temperature unit collection；
A set of control temperature unit collection includes：
Temperature control module；
First sensor is connect with the first input end of the temperature control module；
Second sensor is connect with the second input terminal of the temperature control module；
Heater is connect with the first output end of the temperature control module；
Alarm is connect with the second output terminal of the temperature control module；
Communication device passes through the third input terminal of 485 buses and the temperature control module of described three sets control temperature units concentration, the
Four input terminals, third output end, the connection of the 4th output end；
Power cord；The power cord includes that 5 line three-phase system power cords extend line with zero curve；
The 5 line three-phase system power cord is connect with three-phase 380V AC power, and the zero curve extension line is vacant；Alternatively, institute
The first phase line in 5 line three-phase system power cords is stated, the second phase line connects with the zero line of single-phase 220V power supplys respectively with third phase line
Connect, the neutral conductor and ground wire are connect with the neutral terminal of single-phase 220V power supplys and ground terminal respectively, zero curve extension line with it is single-phase
The zero line side of 220V power supplys connects.
Preferably, a kind of above-mentioned intelligent electric cable joint operation field heating controller, wherein the temperature control module
Including：Master control table, first input end are connect with the first input end of the temperature control module, the second input terminal and the temperature
The third input terminal connection of module is controlled, the first output end is connect with the third output end of the temperature control module；Table is protected,
First input end is connect with the second input terminal of the temperature control module, the second input terminal and the 4th of the temperature control module
Input terminal connects, and the first output end is upper limit alarm, and second output terminal and the 4th input terminal of the temperature control module connect
It connects, third output end is alarmed for lower limit；The time relay, first input end are that timing starts control terminal, the first input
End connect with the first output end of the protection table, the second input terminal be timing reseting controling end, the second input terminal and
The third output end of the protection table (112) connects, the both ends of normal-closed end J1 respectively with the second output terminal of master control table and
First output end of temperature control module connects, and is controlled by the first output end of the time relay, the both ends of normally open end J2 and time
The third output end of relay is connected with the second output terminal of temperature control module, is controlled by the second output terminal of the time relay.
Preferably, a kind of above-mentioned intelligent electric cable joint operation field heating controller, wherein the temperature control module
Also include：Master control table, first input end are connect with the first input end of the temperature control module, the second input terminal with it is described
The third input terminal of temperature control module connects, and the first output end is connect with the third output end of the temperature control module；Table is protected,
Its first input end is connect with the second input terminal of the temperature control module, and the of the second input terminal and the temperature control module
Four input terminals connect, and the first output end is upper limit alarm, the 4th input terminal of second output terminal and the temperature control module
Connection, third output end are alarmed for lower limit, the second output terminal and time relay of upper limit alarm normal-closed end J3 and master control table
The normal-closed end of device connects, and is controlled by the 4th output end of protection table；The time relay, first input end are that timing starts to control
End, first input end are connect with the first output end of the protection table, and the second input terminal is timing reseting controling end,
Second input terminal is connect with the third output end of the protection table, the normal-closed end and temperature at the both ends and protection table of normal-closed end J1
The the first output end connection for controlling module, is controlled by the first output end of the time relay, the both ends of normally open end J2 respectively with when
Between the third output end of relay connected with the second output terminal of temperature control module, controlled by the second output terminal of the time relay.
Preferably, a kind of above-mentioned intelligent electric cable joint operation field heating controller, wherein the control temperature unit
Collection carries out data communication using RS485 interfaces.
Preferably, a kind of above-mentioned intelligent electric cable joint operation field heating controller, wherein the communication device
Using 485-WiFi modules, for realizing the communication of short distance.
Preferably, a kind of above-mentioned intelligent electric cable joint operation field heating controller, wherein the communication device
Using 485-3G/4G modules, for realizing remote communication.
Preferably, the intelligent electric cable joint operation field heating controller is whole by the communication device and client
End connection carries out remote control to the heating controller；The client terminal includes laptop and mobile client.
A kind of control method using the intelligent electric cable joint operation field heating controller passes through client end
It holds to communication device and sends inquiry sense command and control command, the temperature control module that three sets of identical control temperature units are concentrated is filled from communication
It sets the inquiry sense command received and control command drives the work state information of temperature control module acquisition heating controller respectively
And fed back to communication device, and heating controller is driven to carry out corresponding operating；The client terminal receives anti-through communication device
The work state information of the heating controller of feedback is shown.
Preferably, the master control table in the temperature control module is by receiving adding for the monitored cable connector of first sensor
The temperature signal of thermal region and the normal-closed end control heater work being connect with the time relay.
The monitoring temperature of cable junction sensitizing range that protection table in the temperature control module is exported by receiving second sensor
The temperature signal in domain.
When temperature is less than low alarm setting temperature, protection table lower limit warning output makes the order that time relay timing resets
Signal drives the time relay to carry out timing and resets operation.
When temperature is higher than high alarm setting temperature, protection table upper limit alarm exports the order for making the time relay start timing
Signal drives the time relay to start Clocked operation, and sends cut-out master control table after timing and order the control of heater
Order and alarm signal drive heater to stop heating and triggering alarm equipment alarm respectively；When realizing to the heating controller
Between protect.
Preferably, the master control table in the temperature control module is by receiving adding for the monitored cable connector of first sensor
The temperature signal of thermal region and the normal-closed end being connect with the time relay and the normal-closed end control heater work for protecting table.
The monitoring temperature of cable junction sensitizing range that protection table in the temperature control module is exported by receiving second sensor
The temperature signal in domain.
When temperature is less than low alarm setting temperature, protection table lower limit warning output makes the order that time relay timing resets
Signal drives the time relay to carry out timing and resets operation.
When temperature is higher than high alarm setting temperature, protection table upper limit alarm exports the order for making the time relay start timing
Signal drives the time relay to start Clocked operation, and sends cut-out master control table after timing and order the control of heater
Order and alarm signal drive heater to stop heating and triggering alarm equipment alarm respectively；Realize that heating controller temperature is protected
Shield.
In conclusion intelligent electric cable joint operation field heating controller of the present invention and control method, have following excellent
Point and advantageous effect：The present invention provides a kind of intelligent electric cable joint operation field with temperature protection and guardtime function
Heating controller integrates three sets of control temperature unit collection, and the concentration heated for controlling temperature of three bell and spigot joints, can unite in geared cable construction
One monitoring, integrated level is high, easy to use, easy to operate, securely and reliably；The present invention has multiple sensors, can measure multiple
The temperature in region, is monitored temperature sensitive areas, can effectively reduce due to single sensor failure and temperature mistake
High and initiation accident.The function of its guardtime and temperature protection of the invention, keeps staff on duty without whole day.This reality is new
Type is also equipped with warning function, once heating terminates, alarm can send out alarm, on the one hand improves the work effect of staff
On the other hand rate also improves the safety coefficient of working environment, reduces potential danger.The communication function of the present invention, realizes
Remote control and data acquisition.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of cable construction operation field separate unit temperature instrument of the prior art；
Fig. 2 is the control circuit of a kind of intelligent electric cable joint operation field heating controller of the present invention and control method
A kind of structural schematic diagram；
Fig. 3 is a kind of intelligent electric cable joint operation field heating controller of the present invention and the temperature control module of control method
Structural schematic diagram；
Fig. 4 is a kind of intelligent electric cable joint operation field heating controller of the present invention and the temperature control module of control method
Structural schematic diagram；
Fig. 5 is the knot of a kind of intelligent electric cable joint operation field heating controller of the present invention and the power cord of control method
Structure schematic diagram；
Fig. 6 is that a kind of intelligent electric cable joint operation field heating controller of the present invention and control method connect with client terminal
The schematic diagram connect.
Specific implementation mode
The present invention is further elaborated by the way that a preferable specific embodiment is described in detail below in conjunction with attached drawing.
As shown in Fig. 2, a kind of intelligent electric cable joint operation field heating controller, including：Three sets of identical temperature control lists
Metaset 100 and communication device 400.Wherein, a set of control temperature unit collection includes：Temperature control module 110；First sensor 120, second passes
Sensor 130, heater 140, alarm 150.Wherein, first sensor 120 is connect with the input terminal 1 of temperature control module；Second passes
Sensor 130 is connect with the input terminal 2 of temperature control module；Heater 140 is connect with the output end 1 of temperature control module；Alarm 150 and temperature
Control the second output terminal connection of module.Communication device 400 passes through the temperature control module 110 in 485 buses and control temperature unit collection 100
Input terminal 3, input terminal 4, output end 3, output end 4 connect.
In conjunction with shown in Fig. 2~6, a kind of control method using the intelligent electric cable joint operation field heating controller
Including：By the client terminal inquiry sense command and control command, three sets of identical control temperature units are sent to communication device 400
The inquiry sense command and control command that temperature control module 110 in collection 100 is received from communication device 400 drive temperature control mould respectively
Block 110 obtains the work state information of heating controller and is fed back to communication device 400, and heating controller is driven to carry out phase
It should operate；The work state information that the client terminal receives the heating controller fed back through communication device 400 is shown.
As shown in figure 3, in the present embodiment, temperature control module 110 includes：Master control table 111 protects table 112, the time relay
113.Wherein, the input terminal 1 of master control table 111 is connect with the input terminal 1 of temperature control module, the input of input terminal 2 and temperature control module
3 connection of end, output end 1 are connect with the output end 3 of temperature control module.Protect table 112, the input of input terminal 1 and temperature control module
2 connection of end, input terminal 2 are connect with the input terminal 4 of the temperature control module, and output end 1 is upper limit alarm, output end 2
It is connect with the input terminal 4 of temperature control module, output end 3 is alarmed for lower limit.The time relay 113, input terminal 1 start for timing
Control terminal, input terminal 1 are connect with the output end 1 of protection table 112, and input terminal 2 is timing reseting controling end, input terminal 2
Connect with the output end 3 of the protection table 112, the both ends of normal-closed end J1 respectively with the output end of master control table 111 2 and temperature control
The output end 1 of module connects, and is controlled by the output end 1 of the time relay 113, the both ends of normally open end J2 and the time relay
113 output end 3 and the output end 2 of temperature control module connect, and are controlled by the output end 2 of the time relay 113.
When the heating controller uses temperature control module 110 as described in Figure 3, the master control in the temperature control module 110
Table 111 by receive the heating region of 120 the monitored cable connector of first sensor temperature signal and with the time after
The normal-closed end control heater work that electric appliance 113 connects.
The monitoring cable connector temperature that protection table 112 in the temperature control module 110 is exported by receiving second sensor 130
Spend the temperature signal of sensitizing range.
When temperature is less than low alarm setting temperature, 112 lower limit warning output of protection table makes 113 timing of the time relay reset
Command signal, drive the time relay 113 carry out timing reset operation.
When temperature is higher than high alarm setting temperature, the output of 112 upper limit alarm of protection table makes the time relay 113 start timing
Command signal, drive the time relay 113 to start Clocked operation, and send after timing 111 pairs of cut-out master control table plus
The control command and alarm signal of hot device 140 drive heater 140 to stop heating and the triggering alarm of alarm 150 respectively；
It realizes to the heating controller guardtime.
As shown in figure 4, in the present embodiment, the inner connecting way of temperature control module 110 can also be：Master control table 111,
Input terminal 1 is connect with the input terminal 1 of the temperature control module, and input terminal 2 is connect with the input terminal 3 of the temperature control module,
Output end 1 is connect with the output end 3 of the temperature control module；Protect table 112, input terminal 1 defeated with the temperature control module
Enter 2 connection of end, input terminal 2 is connect with the input terminal 4 of the temperature control module, and output end 1 is upper limit alarm, output end
2 connect with the input terminal 4 of the temperature control module, and output end 3 is alarmed for lower limit, and normal-closed end J3 is defeated with master control table 111
Outlet 2 is connected with the normal-closed end of the time relay 113, is controlled by the output end 4 of protection table 112；The time relay 113, it is defeated
Enter end 1 and start control terminal for timing, input terminal 1 is connect with the output end 1 of the protection table 112, and input terminal 2 is timing
Reseting controling end, input terminal 2 are connect with the output end 3 of the protection table 112, both ends and the protection table of normal-closed end J1
112 normal-closed end and the output end 1 of temperature control module connect, and are controlled by the output end 1 of the time relay 113, normally open end J2's
Both ends are connect with the output end 2 of the output end of the time relay 113 3 and temperature control module respectively, by the output of the time relay 113
2 control of end.
When the heating controller uses temperature control module 110 as described in Figure 4, the master in the temperature control module 110
Control temperature signal and and time of the table 111 by the heating region of reception 120 the monitored cable connector of first sensor
The normal-closed end control heater work for the normal-closed end and protection table 112 that relay 113 connects.
The monitoring cable connector temperature that protection table 112 in the temperature control module 110 is exported by receiving second sensor 130
Spend the temperature signal of sensitizing range.
When temperature is less than low alarm setting temperature, 112 lower limit warning output of protection table makes 113 timing of the time relay reset
Command signal, drive the time relay 113 carry out timing reset operation.
When temperature is higher than high alarm setting temperature, the output of 112 upper limit alarm of protection table makes the time relay 113 start timing
Command signal, drive the time relay 113 to start Clocked operation, and send after timing 111 pairs of cut-out master control table plus
The control command and alarm signal of hot device 140 drive heater 140 to stop heating and the triggering alarm of alarm 150 respectively
Notify staff；Realize heating controller temperature protection.
The time relay 113 exchanges 60A solid-state relays using direct current control.
The time relay 113 is using the edging trigger two-way relay output electronic timer (TMC5X- of TMCON Thailands magnesium gram
2P2)。
Alarm 150 is using 19MM with LED lamp 12v signals (the western general MP019S/SM11-E of CMP) acousto-optic buzzer.
Alarm 150 uses 19MM12v signal single sound buzzers.
Control temperature unit collection 100 carries out data communication using RS485 interfaces.
Communication device 400 uses 485-WiFi modules.
Communication device 400 uses 485-3G/4G modules.
As shown in figure 5, the heating controller is equipped with power cord, the power cord include 5 line three-phase system power cords 500 and
Zero curve extends line 501.
When construction site provides three-phase 380V AC power, standard color-mixture is pressed by the 5 line three-phase system power cord 500
Or three-phase 380V AC power is connect with heating controller with reference to label；In general, standard color-mixture be the first conducting wire A connect it is red
Color, the second conducting wire B connect green, privates C connects black, privates N connects blue, the 5th conducting wire G connects yellow green；The zero curve
It is vacant to extend line 501.
When construction site provides single-phase 220V power supplys, by the first conducting wire A in 5 line three-phase system power cords 500, second
Conducting wire B is connect with the zero line of single-phase 220V power supplys respectively with privates C, and privates N and the 5th conducting wire G press standard color-mixture
Or it is connect with single-phase 220V power supplys with reference to label；Line 501 is extended by zero curve to connect with the zero line side of single-phase 220V power supplys, is ensured
The carrying load ability of zero curve.
As shown in fig. 6, client terminal includes laptop and mobile client, the client terminal passes through the communication
Device 400 is connect with the intelligent electric cable joint operation field heating controller, realizes the remote control heating controller,
The software for controlling the heating controller is installed in the client terminal, this software is equipped with and corresponding control interface in kind：It realizes
The remote control action command similar with instrument practical operation makes the simpler convenience of the operation heating controller.
It is additionally provided with abundanter status information prompt, including display time graph and status information, sensor broken string surpasses
Temperature prompt supports that local detail scales, to reduce Operation and maintenance person works' difficulty.It is additionally provided with data management interface,
Using the date as filename, txt texts are provided and are easily introduced into excel tables, supports excel outputs and picture output.
Multiple heaters can be extended to a complicated temperature-controlling system by communication device, and by unified console into
Row control.
A kind of intelligent electric cable joint operation field heating controller of the present invention and control method, provide a kind of band temperature
The intelligent electric cable joint operation field heating controller of protection and guardtime function integrates three sets of control temperature unit collection, towards
The concentration heated for controlling temperature of three bell and spigot joints in cable construction can carry out unified monitoring, and integrated level is high, easy to use, securely and reliably；
The present invention can monitor the temperature of multiple regions simultaneously, and have warning function, and communication function can realize remote control sum number
According to acquisition, and more complicated temperature-controlling system can be extended to.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (5)
1. a kind of intelligent electric cable joint operation field heating controller, which is characterized in that include：
Three sets of identical control temperature unit collection (100)；Often covering the control temperature unit collection includes：
Temperature control module (110)；
First sensor (120), connect with the first input end of the temperature control module；
Second sensor (130) is connect with the second input terminal of the temperature control module；
Heater (140) is connect with the first output end of the temperature control module；
Alarm (150), connect with the second output terminal of the temperature control module；
Communication device (400), it is defeated by 485 buses and the third of the temperature control module (110) in the control temperature unit collection (100)
Enter end, the connection of the 4th input terminal, third output end, the 4th output end；
Power cord；The power cord includes 5 line three-phase system power cords (500) and zero curve extension line (501)；The 5 line three-phase
Power cord (500) processed connect with three-phase 380V AC power, and the zero curve extension line (501) is vacant；Alternatively, the 5 line three-phase
The first phase line (A) in power cord (500) processed, the second phase line (B) and third phase line (C) firewire with single-phase 220V power supplys respectively
End connection, the neutral conductor (N) and ground wire (G) are connect with the neutral terminal of single-phase 220V power supplys and ground terminal respectively, and the zero curve expands
Show line (501) is connect with the zero line side of single-phase 220V power supplys；
The intelligent electric cable joint operation field heating controller is connected by the communication device (400) and client terminal
It connects, remote control is carried out to the heating controller；The client terminal includes laptop and mobile client；The temperature
Controlling module (110) also includes：
Master control table (111), first input end are connect with the first input end of the temperature control module, the second input terminal with it is described
Temperature control module the connection of third input terminal, the first output end connect with the third output end of the temperature control module；
Table (112), first input end is protected to be connect with the second input terminal of the temperature control module, the second input terminal and institute
4th input terminal of the temperature control module stated connects, and the first output end is upper limit alarm, second output terminal and the temperature control
4th input terminal of module connects, and third output end is alarmed for lower limit, the second output of normal-closed end J3 and master control table (111)
End is connected with the normal-closed end of the time relay (113), is controlled by the 4th output end of protection table (112)；
The time relay (113), first input end are that timing starts control terminal, first input end and the protection table
(112) the first output end connection, the second input terminal are timing reseting controling end, the second input terminal and the protection table
(112) third output end connection, the first of the both ends of normal-closed end J1 and the normal-closed end and temperature control module of protecting table (112) are defeated
Outlet connects, and is controlled by the first output end of the time relay (113), the both ends of normally open end J2 respectively with the time relay
(113) third output end is connected with the second output terminal of temperature control module, by the second output terminal control of the time relay (113)
System；Alternatively, the temperature control module (110) includes：
Master control table (111), first input end are connect with the first input end of the temperature control module, the second input terminal with it is described
Temperature control module the connection of third input terminal, the first output end connect with the third output end of the temperature control module；
Table (112), first input end is protected to be connect with the second input terminal of the temperature control module, the second input terminal and institute
4th input terminal of the temperature control module stated connects, and the first output end is upper limit alarm, second output terminal and the temperature control
4th input terminal of module connects, and third output end is alarmed for lower limit；The time relay (113), first input end are meter
When start control terminal, first input end is connect with the first output end of the protection table (112), the second input terminal be meter
When reseting controling end, the second input terminal connect with the third output end of the protection table (112), the both ends of normal-closed end J1
It is connect respectively with the first output end of the second output terminal of master control table (111) and temperature control module, by the of the time relay (113)
One output end controls, and the second of the both ends of normally open end J2 and the third output end of the time relay (113) and temperature control module is defeated
Outlet connects, and is controlled by the second output terminal of the time relay (113).
2. intelligent electric cable joint operation field heating controller as described in claim 1, it is characterised in that：The temperature control
Unit collection (100) carries out data communication using RS485 interfaces.
3. intelligent electric cable joint operation field heating controller as described in claim 1, it is characterised in that：The communication
Device (400) uses 485-WiFi modules.
4. intelligent electric cable joint operation field heating controller as described in claim 1, it is characterised in that：The communication
Device (400) uses 485-3G/4G modules.
5. a kind of intelligent electric cable joint operation field heating controller using as described in any one of Claims 1 to 4
Control method, which is characterized in that include：By client terminal inquiry sense command and control are sent to communication device (400)
It orders, the inquiry detection that the temperature control module (110) in three sets of identical control temperature unit collection (100) is received from communication device (400)
Order and control command drive temperature control module (110) to obtain the work state information of heating controller and to communication device respectively
(400) it feeds back, and heating controller is driven to carry out corresponding operating；The client terminal is received to be fed back through communication device (400)
The work state information of heating controller shown；
Master control table (111) in the temperature control module (110) is by receiving first sensor (120) institute monitoring cable connector
Heating region temperature signal and the normal-closed end that is connect with the time relay (113) and protection table (112) normal-closed end control
Heater work processed；
The monitoring cable connector that protection table (112) in the temperature control module (110) is exported by receiving second sensor (130)
The temperature signal of temperature sensitive areas；
When temperature is less than low alarm setting temperature, protection table (112) lower limit warning output makes the time relay (113) timing reset
Command signal, drive the time relay (113) carry out timing reset operation；
When temperature is higher than high alarm setting temperature, protection table (112) upper limit alarm output makes the time relay (113) start timing
Command signal, drive the time relay (113) start Clocked operation, and after timing send cut-out master control table (111)
To the control command and alarm signal of heater (140), heater (140) is driven to stop heating and triggering alarm respectively
(150) it alarms；Realize heating controller temperature protection.
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| CN201610929369.XA CN106444922B (en) | 2016-10-31 | 2016-10-31 | A kind of intelligent electric cable joint operation field heating controller and control method |
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| CN201610929369.XA CN106444922B (en) | 2016-10-31 | 2016-10-31 | A kind of intelligent electric cable joint operation field heating controller and control method |
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| CN111190445A (en) * | 2019-05-21 | 2020-05-22 | 上海微晁自动化科技有限公司 | Multistage pipeline series connection temperature control heating system |
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