CN104635796A - Heat transfer oil multi-path monitoring system and method - Google Patents
Heat transfer oil multi-path monitoring system and method Download PDFInfo
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Abstract
The invention discloses a heat transfer oil multi-path monitoring system and method. The system comprises a field terminal and a monitoring terminal. The field terminal monitors real-time temperatures of monitored points in real time when the system runs and displays the real-time temperatures of the monitored points in order in real time; if the real-time temperatures of the monitored points are currently higher than preset temperature thresholds of the monitored points, the system automatically switches a current display image to channel information and temperature information of the corresponding monitored point and stops heating; thus, an operator can clearly know which monitored point fails and timely and reasonably perform operating and handling, design cost and maintenance cost are reduced, production is safer and more reliable, processing quality of paint can be improved, and labor intensity is reduced for workers; meanwhile, the monitoring terminal draws change curves the corresponding temperatures of the monitored points.
Description
Technical field
The present invention relates to monitoring field, particularly relate to a kind of conduction oil duplex monitoring system and method for supervising.
Background technology
Conduction oil is recycle oil again, it is safety heat-preserving material conventional in paint process process, during use, conduction oil heats in stove, by conduit heating-up temperature is carried out at a distance paint to be processed, due to the oil temperature of conduction oil higher (300 degrees Celsius can be reached), so be the subject matter faced to the stable of temperature and accurate control.
The temperature of conduction oil oil in circulating-heating process constantly raises and different at the temperature requirement of each position, such as: in stove, oil temperature can not exceed temperature limit; Give the oil temperature of paint heating then can not lower than uniform temperature value, otherwise the quality affecting paint process need to detect the temperature at crossing, therefore, needs monitoring pointed to each position of whole heat-conducting oil heating system respectively.And current heat-conducting oil heating system, mainly repeatedly must check that heat-conducting oil system runs oil temperature state by staff, labour intensity is larger, and temperature is higher in heating chamber, enter the phenomenon that operating personnel may be caused to fall in a swoon for a long time, easily occur potential safety hazard.Simultaneously, because conduction oil oil temperature in cyclic process constantly raises, when the temperature of conduction oil exceeds oil pump safe operating temperature or exceeds paint ceiling temperature scope to be heated, need field personnel must stop, to the heating of stove, increasing labour intensity further.
Summary of the invention
Technical matters to be solved by this invention is, provides a kind of conduction oil duplex monitoring system and method for supervising, can reduce the labour intensity of staff, improve the safety and reliability of production, also reduces manufacture and maintenance cost simultaneously.
In order to solve the problems of the technologies described above, the invention provides a kind of conduction oil duplex monitoring system, comprising:
On-the-spot end, for the temperature of multiple point being monitored in Real-Time Monitoring heat-conducting oil heating scene, judge whether the present real-time temperature value of described point being monitored is equal to or greater than preset temperature threshold value corresponding to described point being monitored, if, then control to stop heating, and show channel information corresponding to described point being monitored and temperature information, otherwise, the power of adjustment heating module, and show the current temperature value of each point being monitored that Real-Time Monitoring obtains in real time successively;
Monitoring client, to be held with described scene by serial ports and is connected, and for holding each real-time temperature values of each point being monitored of sending according to described scene, draws and shows the dynamic temperature change curve of each point being monitored.
Further, described scene end comprises:
Heating module, for giving heat-conducting oil heating;
Multi way temperature Real-Time Monitoring module, with the one_to_one corresponding of multiple described point being monitored, for the temperature of the multiple described point being monitored of Real-Time Monitoring;
Load module, for presetting the temperature threshold of each point being monitored;
First display module, for showing the temperature value that each temperature Real-Time Monitoring module institute Real-Time Monitoring obtains;
Analog to digital converter, is electrically connected with temperature Real-Time Monitoring module described in multichannel respectively, is converted to digital signal for the simulating signal of temperature Real-Time Monitoring module described in multichannel being sent;
Single-chip microcomputer governor circuit, respectively with described analog to digital converter, described load module, described first display module and the electrical connection of described heating module, for receive that described analog to digital converter sends each described in the present real-time temperature value of point being monitored, and judge whether the current real-time temperature values in described point being monitored is equal to or greater than preset temperature threshold value, if, then control described display module and show channel information corresponding to this point being monitored and temperature information, and control described heating module stopping heating, otherwise, by the pulse of pid algorithm modulation (PWM) to adjust the power of described heating module, and control the current temperature value that described display module shows each point being monitored that described multi way temperature Real-Time Monitoring module institute Real-Time Monitoring obtains in real time successively.
Further, described monitoring client comprises:
Main control module, holds with described scene and is electrically connected, for send according to described scene end each described in the real-time temperature values of point being monitored draw corresponding dynamic temperature change curve;
Second display module, is connected with described main control module, under the control of described main control module, shows the dynamic temperature change curve corresponding to each point being monitored respectively.
Correspondingly, present invention also offers a kind of conduction oil multi-path monitoring method, comprise step:
The real time temperature of each point being monitored of Real-Time Monitoring respectively;
Judge whether the present real-time temperature value of described point being monitored is equal to or greater than corresponding preset temperature threshold value, if so, then control to stop heating, and show channel information corresponding to this point being monitored and temperature information; Otherwise, the power of adjustment heating module, and show in real time the current real-time temperature values in each point being monitored that Real-Time Monitoring obtains successively;
According to each real-time temperature values of each point being monitored, draw corresponding dynamic temperature change curve.
Implement the present invention, there is following beneficial effect:
The present invention holds the real time temperature of each point being monitored in the Real-Time Monitoring heat-conducting oil system course of work by scene, and show the real time temperature of each point being monitored in real time successively, and when judging that the current real time temperature in point being monitored is equal to or greater than the preset temperature threshold value of this point being monitored, system is automatic channel information and the temperature information current display frame being switched to this point being monitored then, stop heating simultaneously, thus making operating personnel very clearly to know there is problem in which point being monitored, and then can reasonably operate in time and process, reduce design cost and maintenance cost is lower, improve the safety and reliability of production, improve the crudy of paint, reduce the labour intensity of staff, meanwhile, this system also by the change curve of temperature corresponding to drafting point being monitored, monitoring side, with to staff to the stability of system works with certain reference.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of an embodiment of conduction oil duplex monitoring system of the present invention;
Fig. 2 is the circuit theory diagrams of an embodiment of load module of the present invention;
Fig. 3 is the circuit theory diagrams of an embodiment of temperature Real-Time Monitoring module of the present invention;
Fig. 4 is the circuit theory diagrams of an embodiment of heating module of the present invention;
Fig. 5 is the process flow diagram of an embodiment of a kind of conduction oil multi-path monitoring method of the present invention;
Fig. 6 is the process flow diagram carrying out an embodiment of PID adjustment in a kind of conduction oil multi-path monitoring method of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, it is the structural representation of an embodiment of a kind of conduction oil duplex monitoring system of the present invention.Particularly, this conduction oil duplex monitoring system of the present embodiment specifically comprises:
On-the-spot end, for the temperature of multiple point being monitored in Real-Time Monitoring heat-conducting oil heating scene, judge whether the present real-time temperature value of each point being monitored is equal to or greater than preset temperature threshold value corresponding to this point being monitored, if, then control to stop heating, and show channel information corresponding to this point being monitored and temperature information, otherwise, the power of adjustment heating module, and show the current temperature value of each point being monitored that Real-Time Monitoring obtains in real time successively, in the present embodiment, the corresponding preset temperature threshold value in each point being monitored, during concrete enforcement, in the present embodiment, this scene end specifically comprises: multi way temperature Real-Time Monitoring module 11, with the one_to_one corresponding of multiple point being monitored, for the temperature of the multiple point being monitored of Real-Time Monitoring, load module 12, for presetting the temperature threshold of each point being monitored, first display module 13, for showing the temperature value that each temperature Real-Time Monitoring module institute Real-Time Monitoring obtains, heating module 14, for giving heat-conducting oil heating, analog to digital converter 15, is electrically connected with each road temperature Real-Time Monitoring module respectively, carries out analog to digital conversion for the temperature value obtained by each road temperature Real-Time Monitoring module institute Real-Time Monitoring, single-chip microcomputer governor circuit 16, respectively with above-mentioned analog to digital converter 14, load module 12, first display module 13 and heating module 14 are electrically connected, for receiving each road temperature real-time monitoring module institute Real-Time Monitoring gained temperature value that this analog to digital converter 14 sends, and judge whether the present real-time temperature value of each point being monitored is equal to or greater than corresponding preset temperature threshold value, if not, then pass through the pulse of pid algorithm modulation (PWM) to adjust the power of heating module, and control the first display module 13 show successively in real time multi way temperature monitoring modular monitor the current temperature value of each point being monitored obtained, if the current temperature value of this point being monitored is equal to or greater than corresponding preset temperature threshold value, then control the first display module 13 and show channel information corresponding to this point being monitored and temperature information, and control heating module 14 stopping heating, also be calculate dutycycle by pid algorithm particularly, carry out pwm pulse modulation and control heating module, in the present embodiment, owing to there being multiple point being monitored, namely multi way temperature Real-Time Monitoring module is had, and each road Real-Time Monitoring module is connected with an input pin of this analog to digital converter, therefore, namely the pin numbering of this analog to digital converter can be the channel information of this road temperature Real-Time Monitoring module, certainly, showing in real time successively in above-mentioned, also refer to and to show in real time successively according to the order of this channel number, in the present embodiment, this channel information is numbered as channel information by the other collocation channel again of single-chip microcomputer governor circuit is also understandable, in the present embodiment, this temperature information comprises the temperature threshold preset of the current real-time temperature values in point being monitored and correspondence,
Monitoring client 2, is electrically connected with scene end 1, for the real-time temperature values of each point being monitored of Real-Time Monitoring gained sent according to scene end 1, draws and shows the dynamic temperature change curve of each point being monitored; During concrete enforcement, in the present embodiment, this monitoring client 2 specifically comprises:
Main control module 21, holds the output terminal of the single-chip microcomputer governor circuit 16 of 1 to be connected by serial ports with scene, and the real-time temperature values for each point being monitored of sending according to scene end 1 draws corresponding dynamic temperature change curve; Second display module 22, is connected with above-mentioned main control module 21, under the control of this main control module 21, shows the dynamic temperature change curve corresponding to each point being monitored respectively.
See Fig. 2, in the present embodiment, this load module comprises first, two, three, four, five button SW1, SW2, SW3, SW4, SW5, first, two, three, four, five resistance R1, R2, R3, R4, R5, this is first years old, two, three, four, five button SW1, SW2, SW3, SW4, one end ground connection respectively of SW5, the other end respectively with first of this single-chip microcomputer U1, two, three, four, five delivery outlet P00, P01, P02, P03, P04 connects, node between this first button SW1 and the first delivery outlet P00 of this single-chip microcomputer U1, node between this second button SW2 and the second delivery outlet P01 of this single-chip microcomputer U1, node between 3rd button SW3 and the 3rd delivery outlet P02 of this single-chip microcomputer U1, node between 4th button SW4 and the 4th delivery outlet P03 of this single-chip microcomputer U1, and the 5th node between button SW5 and the 5th delivery outlet P04 of this single-chip microcomputer U1 respectively by this first, two, three, four, five resistance R1, R2, R3, R4, R5 external power supply.
In the present embodiment, this load module is by arranging 5 Independent keys respectively as arranging key, switch key, add 1 key and subtract 1 key, empty key, in order to preset the temperature threshold of each point being monitored, during concrete operations, press and key 1 time (arranging passage) is set, it is current that what carry out is arrange the temperature of passage 1, press and add 1 key and can increase 1 to preset temperature, press and subtract 1 key and can subtract 1 to preset temperature, (if do not need sense channel 1 mouthful only need press and empty key), after passage 1 sets, press switch key again and can carry out temperature setting to passage 2.After the channel temperature detected needed for each sets, again press and key is set exits.
See Fig. 3, in the present embodiment, this temperature Real-Time Monitoring module specifically comprises contact temperature sensing thermocouple and modulate circuit (Fig. 3 chips U3, U4, U5 and peripheral circuits thereof), wherein, the input end of this modulate circuit is electrically connected with the output terminal of contact temperature sensing thermocouple, and output terminal is electrically connected with single-chip microcomputer governor circuit by analog to digital converter U2.
In the present embodiment, this first display module is LCD display, and the second display module is LED display.
See Fig. 4, in the present embodiment, heating module comprises heating electrical appliance, solid-state relay SSR, triode Q1, gauge tap S1, 9th, ten resistance R9, R10, wherein, first input pin of this solid-state relay SSR is by the external 12V DC voltage power supply of gauge tap S1, second input pin is electrically connected with the collector of triode Q1 by the tenth resistance R10, the external 220V ac voltage power supply of 3rd input end, its output terminal is electrically connected with heating electrical appliance, the base stage of triode Q1 is also electrically connected with the pin P35 of single-chip microcomputer U1 by the 9th resistance R9, launch the external 12V DC voltage power supply of collection.
In the present embodiment, owing to having preset the temperature threshold of each measured point, when the temperature real-time monitoring module Real-Time Monitoring of correspondence obtains the real time temperature of this measured point, then single-chip microcomputer U1 controls the first display module display real time temperature, single-chip microcomputer U1 judges whether real time temperature is less than default temperature threshold simultaneously, if, then carry out pid algorithm and calculate dutycycle, carry out pwm pulse modulation, thus control the break-make of solid-state relay SSR, and then change the power of electric heater, otherwise, then this Single-chip Controlling solid-state relay SSR disconnects, thus control electric heater stopping heating.Particularly, in the present embodiment, can obtain dutycycle computing formula according to pid algorithm is:
Δu(n)＝a
0e(n)+a
1e(n-1)+a
2e(n-2)；
u(n)＝u(n-1)+Δu(n)
Wherein, a
0a
1a
2for pid parameter, e (n), e (n-1), deviate between the real-time temperature values that e (n-2) is respectively n-th time, n-1 time and n-2 Real-Time Monitoring obtains and preset temperature threshold value, the control variable that u (n-1) exports after being (n-1)th sampling, the variable that u (n) exports after being n-th sampling and dutycycle, Δ u (n) is the variable quantity of the dutycycle after n-th employing.In the present embodiment, the determining step of this pid parameter is specially: preset temperature threshold value is 150 degree, sampling period T is decided to be 5 seconds, first determine Kp, even Ki, Kd=0, adoption rate regulates, obtain one stable more close to the concussion parameter of control objectives, then calculate Ti, Td according to this Kp and concussion cycle; Get Kc=2.5 respectively, Kc=5, Kc=9.8, Kc=10, the curve map of the time that reference monitor end system runs and temperature is according to curve map, and as Kc=10, shock range is slightly more a little bigger than Kc=9, but height is relatively more even, so determine that Kc is between 9.8-10; Concussion cycle 45 points, each point is 5s, and arranging the concussion cycle calculating Kc=9.8 and Kc=10 is 225s; According to Ziegler-Nichols parameter
Critical gain Kc=10, concussion cycle Pc=225s, calculates Kp=6.5, Td=0.12*Pc=27s, according to formula Kd=Kp*Td/T=6.5*27/5=35.1,, there is steady-state error in operational system when Kp=6.5, Kd=35.1, so add integral controller to eliminate this steady-state error, according to formula: Ki=Kp*T/Ti=5.98*5/112.5=0.289 so get a0=6.5, a1=0.289, a2=35.1
See Fig. 6, be the process flow diagram of pid algorithm in the present embodiment, particularly, after determining pid parameter, according to above-mentioned formulae discovery dutycycle u (n), variable u (n) namely exported after n-th sampling, and judge whether it meets the following conditions:
U (n) > Umax, or u (n) < Umin, or during Umin≤u (n)≤Umax, if meet, then will perform step:
Thus the data calculated as calculating next time.
In the present embodiment, this scene end also can arrange alarm module, and this alarm module comprises piezo buzzer particularly, and is connected on the amplifying circuit between this hummer and single-chip microcomputer U1.Further, in the present embodiment, this alarm module also can comprise the light emitting diode as alarm lamp, and this light emitting diode is connected between transistor amplifier and external power supply.
This conduction oil duplex monitoring system of the present embodiment holds the real time temperature of each point being monitored in the Real-Time Monitoring heat-conducting oil system course of work by scene, and show the real time temperature of each point being monitored in real time successively, when temperature exceedes the preset temperature threshold value of this point being monitored (reaching alarm range), current display frame is automatically switched to monitored channel information and the temperature information that current real-time temperature values is greater than preset temperature threshold value by system, stop heating simultaneously, and report to the police, thus which passage produced problem makes operating personnel very clearly to know be, namely there is problem in which point being monitored), and then can reasonably operate in time and process, reduce design cost and maintenance cost is lower, improve the safety and reliability of production, improve the crudy of paint, reduce the labour intensity of staff.Simultaneously, in the present embodiment, this conduction oil duplex monitoring system also draws corresponding temperature variation curve by monitoring side (i.e. host computer) according to the real-time temperature values of each period of each point being monitored, with the change curve of each point being monitored temperature of real-time dynamic display, thus operating personnel very clearly can be known from change curve be the temperature dynamic change procedure of each point being monitored, also provide certain reference data to system stability.
Accordingly, based on above-mentioned conduction oil duplex monitoring system, present invention also offers a kind of conduction oil multi-path monitoring method, below in conjunction with specific embodiments and the drawings, it is described in detail.
See Fig. 5, be the schematic flow sheet of an embodiment of conduction oil multi-path monitoring method of the present invention, particularly, the conduction oil multi-path monitoring method of the present embodiment specifically comprises step:
S11, the respectively real time temperature of each point being monitored of Real-Time Monitoring.In one embodiment, by the real time temperature of set temperature sensor respectively each point being monitored of Real-Time Monitoring respectively, each point being monitored in heat-conducting oil system.In the present embodiment, each point being monitored arranges a temperature sensor.In the present embodiment, before this step S11 of execution, need the actual conditions according to each point being monitored, pre-set the temperature threshold of each point being monitored, particularly, 5 Independent keys modules are set realize by end at the scene.
S13, judges whether the present real-time temperature value of each point being monitored is equal to or greater than corresponding preset temperature threshold value, if so, then performs step S15, otherwise perform step S17.In one embodiment, be first be sent to single-chip microcomputer governor circuit by passage correspondingly after digital signal by the analog-converted of temperature sensor corresponding for each point being monitored by analog to digital converter, after being processed this digital signal by this single-chip microcomputer governor circuit, this single-chip microcomputer governor circuit judges whether the present real-time temperature of each point being monitored is equal to or greater than corresponding preset temperature threshold value.
S15, controls to stop heating, and shows channel information corresponding to this point being monitored and temperature information.In one embodiment, if single-chip microcomputer governor circuit judges that the present real-time temperature of point being monitored is equal to or greater than corresponding preset temperature threshold value, then control heater stops heating, and show channel information corresponding to this point being monitored and temperature information, because each temperature sensor corresponds to an input pin of analog to digital converter, therefore, namely this input pin numbering can be used as channel information corresponding to this point being monitored, certainly, this channel signal also can be that single-chip microcomputer governor circuit sets according to other modes; And in the present embodiment, this temperature information refers to present real-time temperature value and the preset temperature threshold value of this point being monitored.
S17, the power of modulation heating module, and show the current real-time temperature values in each point being monitored successively in real time.During concrete enforcement, if when single-chip microcomputer governor circuit judges that the present real-time temperature value of this point being monitored is less than this preset temperature threshold value, then calculate dutycycle by pid algorithm, carry out pwm pulse modulation with the power adjusting heating module.In one embodiment, can obtain dutycycle computing formula according to pid algorithm is:
Δu(n)＝a
0e(n)+a
1e(n-1)+a
2e(n-2)；
u(n)＝u(n-1)+Δu(n)
Wherein, a
0, a
1, a
2for pid parameter, e (n), e (n-1), deviate between the real-time temperature values that e (n-2) is respectively n-th time, n-1 time and n-2 Real-Time Monitoring obtains and preset temperature threshold value, the control variable that u (n-1) exports after being (n-1)th sampling, the variable that u (n) exports after being n-th sampling and dutycycle.In the present embodiment, this pid parameter presets, the concrete determining step of this parameter comprises: preset temperature threshold value is 150 degree, and sampling period T is decided to be 5 seconds, first determines Kp, even Ki, Kd=0, adoption rate regulates, obtain one stable more close to the concussion parameter of control objectives, then Ti is calculated, Td according to this Kp and concussion cycle; Get Kc=2.5 respectively, Kc=5, Kc=9.8, Kc=10, the curve map of the time that reference monitor end system runs and temperature is according to curve map, and as Kc=10, shock range is slightly more a little bigger than Kc=9, but height is relatively more even, so determine that Kc is between 9.8-10; Concussion cycle 45 points, each point is 5s, and arranging the concussion cycle calculating Kc=9.8 and Kc=10 is 225s; According to Ziegler-Nichols parameter
Critical gain Kc=10, concussion cycle Pc=225s, calculates Kp=6.5, Td=0.12*Pc=27s, according to formula Kd=Kp*Td/T=6.5*27/5=35.1,, there is steady-state error in operational system when Kp=6.5, Kd=35.1, so add integral controller to eliminate this steady-state error, according to formula: Ki=Kp*T/Ti=5.98*5/112.5=0.289 so get a0=6.5, a1=0.289, a2=35.1
See Fig. 6, be the process flow diagram of pid algorithm in the present embodiment, particularly, after determining pid parameter, according to above-mentioned formulae discovery dutycycle u (n), variable u (n) namely exported after n-th sampling, and judge whether it meets the following conditions:
U (n) > Umax, or u (n) < Umin, or during Umin≤u (n)≤Umax, if meet, then perform step:
e(n-1)→e(n-2)
e(n)→e(n-1)
u(n)→u(n-1)
Thus the data calculated as calculating next time.
S19, according to each real-time temperature values of each point being monitored, draws and shows corresponding dynamic temperature change curve.In one embodiment, when each real-time temperature values of each point being monitored is sent to monitoring client by serial ports by the single-chip microcomputer governor circuit of scene end, then draw corresponding temperature variation curve by the main control module of monitoring client according to each real-time temperature values of each point being monitored, thus be convenient to the temperature variations that staff understands each point being monitored, thus propose corresponding improvement project or carry out corresponding measure.
Above disclosedly be only present pre-ferred embodiments, certainly the interest field of the present invention can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that the claims in the present invention are done, still belong to the scope that invention is contained.
Claims (10)
1. a conduction oil duplex monitoring system, is characterized in that, comprising:
On-the-spot end, for the temperature of multiple point being monitored in Real-Time Monitoring heat-conducting oil heating scene, judge whether the present real-time temperature value of described point being monitored is equal to or greater than preset temperature threshold value corresponding to described point being monitored, if, then control to stop heating, and show channel information corresponding to described point being monitored and temperature information, otherwise, the power of adjustment heating module, and show the current temperature value of each point being monitored that Real-Time Monitoring obtains in real time successively;
Monitoring client, to be held with described scene by serial ports and is connected, and for holding each real-time temperature values of each point being monitored of sending according to described scene, draws and shows the dynamic temperature change curve of each point being monitored.
2. conduction oil duplex monitoring system as claimed in claim 1, is characterized in that, described scene end comprises:
Heating module, for giving heat-conducting oil heating;
Multi way temperature Real-Time Monitoring module, with the one_to_one corresponding of multiple described point being monitored, for the temperature of the multiple described point being monitored of Real-Time Monitoring;
Load module, for presetting the temperature threshold of each point being monitored;
First display module, for showing the temperature value that each temperature Real-Time Monitoring module institute Real-Time Monitoring obtains;
Analog to digital converter, is electrically connected with temperature Real-Time Monitoring module described in each road respectively, is converted to digital signal for the simulating signal of temperature Real-Time Monitoring module described in each road being sent;
Single-chip microcomputer governor circuit, respectively with described analog to digital converter, described load module, described first display module and the electrical connection of described heating module, for receive that described analog to digital converter sends each described in the present real-time temperature value of point being monitored, and judge whether the current real-time temperature values in described point being monitored is equal to or greater than preset temperature threshold value, if, then control described display module and show channel information corresponding to this point being monitored and temperature information, and control described heating module stopping heating, otherwise, dutycycle is calculated by pid algorithm, and carry out pwm pulse modulation with the power adjusting described heating module, control the current temperature value that described display module shows each point being monitored that described multi way temperature Real-Time Monitoring module institute Real-Time Monitoring obtains in real time successively simultaneously.
3. conduction oil duplex monitoring system as claimed in claim 1 or 2, it is characterized in that, described monitoring client comprises:
Main control module, holds with described scene and is electrically connected, for send according to described scene end each described in the real-time temperature values of point being monitored draw corresponding dynamic temperature change curve;
Second display module, is connected with described main control module, under the control of described main control module, shows the dynamic temperature change curve corresponding to each point being monitored respectively.
4. many deep fats duplex monitoring system as claimed in claim 2, is characterized in that, described load module comprises first, two, three, four, five button SW1, SW2, SW3, SW4, SW5, first, two, three, four, five resistance R1, R2, R3, R4, R5, described first, two, three, four, five button SW1, SW2, SW3, SW4, one end of SW5 is ground connection respectively, the other end respectively with first of described single-chip microcomputer, two, three, four, five delivery outlet P00, P01, P02, P03, P04 connects, the node between described first button SW1 and the first delivery outlet P00 of described single-chip microcomputer, node between described second button SW2 and the second delivery outlet P01 of described single-chip microcomputer, node between described 3rd button SW3 and the 3rd delivery outlet P02 of described single-chip microcomputer, node between described 4th button SW4 and the 4th delivery outlet P03 of described single-chip microcomputer, and the node between described 5th button SW5 and the 5th delivery outlet P04 of described single-chip microcomputer is respectively by described first, two, three, four, five resistance R1, R2, R3, R4, R5 external power supply.
5. conduction oil duplex monitoring system as claimed in claim 2, it is characterized in that, described temperature Real-Time Monitoring module comprises contact temperature sensing thermocouple and modulate circuit, the input end of described modulate circuit is electrically connected with the output terminal of described contact temperature sensing thermocouple, and the output terminal of described modulate circuit is electrically connected with described single-chip microcomputer governor circuit by described analog-to-digital conversion device.
6. conduction oil duplex monitoring system as claimed in claim 3, it is characterized in that, described first display module is LCD display, and/or described second display module is LED display.
7. conduction oil duplex monitoring system as claimed in claim 2, it is characterized in that, described heating module comprises heating electrical appliance, solid-state relay SSR, triode Q1, gauge tap, 9th, ten resistance R1, R2, wherein, first input pin of described solid-state relay SSR is by the external DC voltage power supply of gauge tap, second input pin is electrically connected with the collector of described triode Q1 by described tenth resistance R10, 3rd input end external AC voltage source, its output terminal is electrically connected with described heating electrical appliance, the base stage of described triode Q1 is electrically connected with described single-chip microcomputer governor circuit by described 9th resistance R9, launch the external DC voltage power supply of collection.
8. conduction oil duplex monitoring system as claimed in claim 2, it is characterized in that, described scene end also comprises the alarm module be electrically connected with described single-chip microcomputer governor circuit, and described alarm module comprises hummer, and is connected on the amplifying circuit between described hummer and described single-chip microcomputer.
9. a conduction oil multi-path monitoring method, is characterized in that, comprises step:
The real time temperature of each point being monitored of Real-Time Monitoring respectively;
Judge whether the present real-time temperature value of described point being monitored is equal to or greater than corresponding preset temperature threshold value, if so, then control to stop heating, and show channel information corresponding to this point being monitored and temperature information; Otherwise, the power of adjustment heating module, and show in real time the current real-time temperature values in each point being monitored that Real-Time Monitoring obtains successively;
According to each real-time temperature values of each point being monitored, draw and show corresponding dynamic temperature change curve.
10. conduction oil multi-path monitoring method as claimed in claim 9, it is characterized in that, the step of the power of described modulation heating module calculates dutycycle specifically by pid algorithm, carries out pwm pulse modulation with the power adjusting described heating module, wherein, the computing formula of dutycycle is:
Δu(n)＝a
0e(n)+a
1e(n-1)+a
2e(n-2)；u(n)＝u(n-1)+Δu(n)；
Wherein, a
0a
1a
2for pid parameter, e (n), e (n-1), deviate between the real-time temperature values that e (n-2) is respectively n-th time, n-1 time and n-2 Real-Time Monitoring obtains and preset temperature threshold value, the control variable that u (n-1) exports after being (n-1)th sampling, the variable that u (n) exports after being n-th sampling, i.e. dutycycle.
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| CN107092284A (en) * | 2017-06-07 | 2017-08-25 | 重庆大学 | A kind of temperature control technology of primacord hot melt |
| CN116609685A (en) * | 2023-03-02 | 2023-08-18 | 北京双登慧峰聚能科技有限公司 | Monitoring method and system applied to liquid cooling energy storage system |
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