CN103092154B - Heat treatment circuit and heat treatment method based on heat treatment circuit - Google Patents
Heat treatment circuit and heat treatment method based on heat treatment circuit Download PDFInfo
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- CN103092154B CN103092154B CN201210562458.7A CN201210562458A CN103092154B CN 103092154 B CN103092154 B CN 103092154B CN 201210562458 A CN201210562458 A CN 201210562458A CN 103092154 B CN103092154 B CN 103092154B
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Abstract
The invention provides a heat treatment circuit and a heat treatment method based on the heat treatment circuit. The heat treatment circuit comprises at least one temperature collecting circuit, at least one heating circuit and a micro-controller. Each temperature collecting circuit is connected with the micro-controller and used for collecting the temperature of at least one element, corresponding to the temperature collecting circuit, of an outdoor collecting device every other first preset time, and inputting the temperature of the at least one element to the micro-controller. The micro-controller is respectively connected with each heating circuit and if according to the temperature of each element and the temperature threshold of each preset element of the outdoor device, which are respectively input by the at least one temperature collecting circuit, used for confirming when the at least one element is heated, according to the temperature and the temperature threshold of a to-be-heated element, triggering the heating circuit corresponding to the at least one to-be-triggered element, and respectively conducting heat treatment to the at least one to-be-heated device.
Description
Technical field
The present invention relates to wireless communication technology, particularly relate to and a kind ofly heat circuit and based on heating the heating treatment method of circuit.
Background technology
At present, outdoor equipment, such as: (wireless) access points (Access Point; Be called for short: the environment temperature that AP) General Requirements can be supported is :-40
0c ~+60
0c.When the operating ambient temperature of outdoor equipment be high ambient temperatures (such as: be greater than+60
0c) time, the general operating ambient temperature adopting good radiator structure or additional fans to reduce outdoor equipment.When the operating ambient temperature of outdoor equipment be low temperature environment temperature (such as: be less than-40
0c), time, the main the following two kinds mode that adopts realizes: the first, the device in outdoor equipment is all adopted technical grade device, thus supports the operating ambient temperature of outdoor equipment; The second, is adopted business level device (its operating ambient temperature is 0 DEG C ~ 70 DEG C) to support the operating ambient temperature of outdoor equipment the part of devices in outdoor equipment, and is improved the operating ambient temperature of outdoor equipment by external heating mode.
But, when adopting technical grade device (its operating ambient temperature is-40 DEG C ~ 85 DEG C) to the device in outdoor equipment, the raising of cost can be caused.In addition, due in the outdoor equipment course of work, the consumption heating of each device is different, and namely the operating ambient temperature of each device is not identical yet, therefore can cause by the operating ambient temperature of the next overall raising outdoor equipment of external heating mode the problem that heating power utilization factor is low.
Summary of the invention
The invention provides and a kind ofly heat circuit and based on heating the heating treatment method of circuit, coming the operating ambient temperature of overall raising outdoor equipment and the low problem of the heating power utilization factor that causes for solving in prior art by external heating mode.
First aspect of the present invention is to provide a kind of heating circuit, comprising: at least one temperature collection circuit, at least one heater circuit and microcontroller; Wherein,
Each temperature collection circuit, be connected with described microcontroller, for every the first Preset Time, gather the temperature of at least one device corresponding with described temperature collection circuit in outdoor equipment, and the temperature of at least one device described is inputed to described microcontroller;
Described microcontroller, be connected with each heater circuit respectively, if for temperature and the temperature threshold of each device preset of each device in the described outdoor equipment that inputs respectively according at least one temperature collection circuit described, determine to exist at least one device to be heated time, according to temperature and the temperature threshold of at least one device to be heated described, the heater circuit triggering at least one device to be heated described corresponding heats device to be heated described at least one respectively;
Wherein, the temperature of each device to be heated is all less than the temperature threshold of described device to be heated.
Another aspect of the present invention is to provide a kind of heating treatment method based on heating circuit, comprising:
Every the first Preset Time, obtain the temperature of each device in outdoor equipment;
If according to the temperature of each device and the temperature threshold of each device preset, determine to exist at least one device to be heated time, according to temperature and the temperature threshold of at least one device to be heated described, at least one device to be heated described is heated.
Technique effect of the present invention is: by arranging at least one temperature collection circuit, at least one heater circuit and microcontroller, and the temperature of each device and the temperature threshold of each device preset in the outdoor equipment inputted respectively according at least one temperature collection circuit at microcontroller, when determining to exist at least one device to be heated, according to temperature and the temperature threshold of at least one device to be heated, trigger heater circuit corresponding at least one device to be heated to heat at least one device to be heated respectively, wherein, the temperature of each device to be heated is all less than the temperature threshold of this device to be heated, thus solve in prior art owing to not considering the operating ambient temperature of each device, the problem that the heating power utilization factor caused only by the operating ambient temperature of the next overall raising outdoor equipment of external heating mode is low.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention heats an embodiment of circuit;
Fig. 2 is the structural representation that the present invention heats another embodiment of circuit;
Fig. 3 is the process flow diagram of the embodiment that the present invention is based on the heating treatment method heating circuit;
Fig. 4 is the process flow diagram of another embodiment that the present invention is based on the heating treatment method heating circuit;
Fig. 5 is the process flow diagram of another embodiment that the present invention is based on the heating treatment method heating circuit.
Embodiment
Fig. 1 is the structural representation that the present invention heats an embodiment of circuit, and as shown in Figure 1, the heating circuit of the present embodiment comprises: at least one temperature collection circuit 11, at least one heater circuit 12 and microcontroller 13.Concrete, each temperature collection circuit 11, is connected with this microcontroller 13, for every the first Preset Time, gather the temperature of at least one device corresponding with temperature collection circuit 11 in outdoor equipment, and the temperature of at least one device is inputed to microcontroller 13; This microcontroller 13, be connected with each heater circuit 12 respectively, if for temperature and the temperature threshold of each device preset of each device in the outdoor equipment that inputs respectively according at least one temperature collection circuit 11, determine to exist at least one device to be heated time, according to temperature and the temperature threshold of at least one device to be heated, trigger heater circuit corresponding at least one device to be heated and respectively at least one device to be heated is heated.Wherein, the temperature of each device to be heated is less than the temperature threshold of this device to be heated.
Preferably, this outdoor equipment can be AP.Wherein, AP can be the HUB in conventional wired networks, can also be equipment the most frequently used when setting up micro radio LAN (Local Area Network) at present.AP is equivalent to the bridge that is connected with gauze and wireless network, and its Main Function each wireless network clients is connected together, then by wireless network access network based on ethernet.In addition, sensu lato AP includes but not limited to wireless exchange board, wireless router, web camera etc.
In the present embodiment, each temperature collection circuit 11 can be separately positioned on the side of at least one device in outdoor equipment, thus makes devices all on outdoor equipment all can be carried out temperature acquisition by a temperature collection circuit 11.Meanwhile, each heater circuit 12 can be separately positioned on the side of at least one device in outdoor equipment, to heat at least one device, thus also makes all devices in outdoor equipment all can be heated by a heater circuit 12.In addition, the number of temperature collection circuit 11 can be identical with the number of heater circuit 12, also can not be identical, and the concrete structure according to this outdoor equipment decides.Preferably, the number of temperature collection circuit 11 is less than or equal to the number of heater circuit 12.
In the present embodiment, when preparing opening chamber's external equipment, and microcontroller 13 is when judging that the temperature of certain device is less than the temperature threshold of this device, then determine that this device needs heating, the device then claiming these needs to heat is device to be heated, now, and this outdoor equipment forbidding power supply, according to temperature and the temperature threshold of device to be heated, trigger heater circuit corresponding to this device to be heated 12 and treat heater element and heat.Wherein, this heater circuit 12 can be step-down heater circuit, or, can also be boosting heater circuit.More specifically, heater circuit 12 can adopt BUCK topological structure, exports the power resistor connect for heating.By microcontroller 13 by PWM Duty ratio control output voltage, for regulating heating power.The power resistor of heating includes but not limited to resistance wire, High Temperature Co Fired Ceramic heating plate (MCH), PET heating film, PI heating film etc., can select according to specific requirements such as mounting meanss.
In the present embodiment, by arranging at least one temperature collection circuit, at least one heater circuit and microcontroller, and the temperature of each device and the temperature threshold of each device preset in the outdoor equipment inputted respectively according at least one temperature collection circuit at microcontroller, when determining to exist at least one device to be heated, according to temperature and the temperature threshold of at least one device to be heated, trigger heater circuit corresponding at least one device to be heated to heat at least one device to be heated respectively, wherein, the temperature of each device to be heated is all less than the temperature threshold of this device to be heated, thus solve in prior art owing to not considering the operating ambient temperature of each device, the problem that the heating power utilization factor caused only by the operating ambient temperature of the next overall raising outdoor equipment of external heating mode is low.
Fig. 2 is the structural representation that the present invention heats another embodiment of circuit, and on above-mentioned basis embodiment illustrated in fig. 1, as shown in Figure 2, this heating circuit also comprises: current collection circuit 14, is connected with this microcontroller 13.Concrete, this current collection circuit 14 is for every the second Preset Time, gather the electric current and voltage that heat circuit, and the electric current of this heating circuit and voltage are inputed to this microcontroller 13, or, for every the second Preset Time, gather and heat the electric current of circuit and the electric current of voltage and outdoor equipment and voltage, and the electric current of the electric current of this heating circuit and voltage and outdoor equipment and voltage are inputed to microcontroller 13.
Preferably, this microcontroller 13 comprises: device determination module 131 to be heated, Weight Acquisition module 132, heating power acquisition module 133 and heating module 134.Wherein, this device determination module 131 to be heated is connected with each temperature collect module 11 respectively, for according to the temperature of device each in this outdoor equipment and the temperature threshold of default each device, determines to there is at least one device to be heated; Wherein, the temperature of at least one device to be heated is less than the temperature threshold of this device to be heated; Weight Acquisition module 132, for according to each temperature of device to be heated and the difference of temperature threshold, obtains the heating weight that each device to be heated is corresponding respectively; Heating power acquisition module 133 is for according to the electric current of this heating circuit and voltage, or the electric current of the electric current of this heating circuit and voltage and this outdoor equipment and voltage, calculates real power; And preset upper limit power and this real power are subtracted each other, obtain afterpower; Heat this real power and this afterpower that module 134 gets for heating weight corresponding to the device each to be heated that gets according to this Weight Acquisition module 132 and heating power acquisition module 133, trigger heater circuit corresponding at least one device to be heated 12 and this device to be heated is heated.
In the present embodiment, PoE/PoE+ adopts direct current supply, voltage is between 44V ~ 57V, AP generally belongs to the equipment of PoE or PoE+ standard, because power input is limited, therefore, AP power at any time all must be less than the power that power-supply unit (PSE) provides, otherwise just may by PSE power-off.
The power input of power receiving equipment (PD) is subject to PSE restriction, especially meets the equipment of IEEE802.3af (PoE) and IEEE802.3at(PoE+) standard.
PoE(Power Over Ethernet) refer to when existing Ethernet Cat.5 wiring architecture does not make any changes, while for some IP-based terminals (as IP telephone machine, wireless local network connecting point AP, web camera etc.) transmission of data signals, the technology of direct current supply can also be provided by kind equipment for this reason.PoE technology can ensure the normal operation of existing network while guaranteeing existing structureization wiring safety, reduces costs to greatest extent.PoE is also referred to as electric power system (the Power over LAN based on LAN (Local Area Network); POL) or active Ethernet (Active Ethernet) be called for short:, sometimes also POE is called for short, this is the newest standards specification transmitting data and electric power while of utilizing existing standard Ethernet transmission cable, and maintains the compatibility with existing Ethernet system and user.The highest power input of IEEE802.3af standard regulation PD can not can not more than 25.5W more than the highest power input of 12.95W, IEEE802.3at standard regulation PD.
In addition, for example, to get m device to be heated, first Weight Acquisition module 132 calculates m the temperature of device to be heated and the difference of its temperature threshold is respectively: Δ t
1, Δ t
2... Δ t
m, these distribution of the differences are-40
0c ~+10
0between C, then every 10
0c divides a gear, and the corresponding heating weight of each gear, in addition, boundary temperature value can reserve 4
0the sluggish surplus of C, such as: should be-30
0the border of C, is set as-28 respectively
0c and-32
0c, thus frequently change heating weight when effectively preventing temperature just near boundary value.It is concrete as shown in Table 1:
Table one
Weight Acquisition module 132 finally can according to table one, and m the temperature of device to be heated and the difference of its preset temperature are respectively: Δ t
1, Δ t
2... Δ t
m, determine the heating weight that m device to be heated is corresponding respectively.Wherein, heating weight larger expression needs larger heating power, and heating weight is that 0 expression does not need heating.
In addition, it should be noted that, when the temperature of device to be heated and the difference of its preset temperature are in Table 1 between two difference range, preferably heating weight corresponding for this device to be heated is set to the maximum heating weight in heating weight corresponding to two difference range.Such as: if the difference of the temperature of device to be heated and its preset temperature is 30 degrees Celsius, it then selects maximum heating weight 5 as the heating weight of this device to be heated between-42 DEG C ~-28 DEG C and-32 DEG C ~-18 DEG C two difference range between the heating weight 5 and 4 of their correspondences.
More preferably, heat module 134 to comprise: heating power dispensing unit 1341, judging unit 1342 and heating processing unit 1343; Wherein, heating power dispensing unit 1341, for heating weight corresponding to the device each to be heated that gets according to this Weight Acquisition module 132 and this afterpower, arranges the second heating voltage of the first heating voltage and each device to be heated respectively; Whether judging unit 1342 is less than or equal to pre-determined lower limit power for the real power judging heating power acquisition module 133 and get; When heating processing unit 1343 is for judging that this real power is less than or equal to this pre-determined lower limit power at judging unit 1342, respectively according to the heating weight of each device to be heated, successively with the first heating voltage for stepping increases the heating voltage of this device to be heated, and the heating voltage of device to be heated after at every turn increasing is exported to heater circuit 12 corresponding to device to be heated with this, to trigger the heating voltage of this heater circuit 12 according to the device to be heated after this increase, heat this device to be heated.Wherein, all determine that current real power is less than or equal to pre-determined lower limit power before increasing the heating voltage of this device to be heated after first time at every turn.
Wherein, the second heating voltage of each device to be heated is the integral multiple of the first heating voltage; This system constraint power is greater than this pre-determined lower limit power, and heating weight is positive integer.
Also it should be noted that, in heating process, the heating weight that each device to be heated is corresponding changes constantly with the temperature of this device, and such as: the heating weight corresponding when some devices to be heated is reduced to 5 from 6, then the second heating voltage of this device to be heated also reduces
thus the power discharged can be reassigned to other devices to be heated.In addition, also it should be noted that, when device to be heated heating weight from 5 increase to 6 time, if now there is unnecessary power, then the second heating voltage that this device to be heated is corresponding also increases
if now do not have unnecessary power, then the second heating voltage that this device to be heated is corresponding still heats the second heating voltage that weight is 5 correspondences.
More preferably, judging unit 1342 also for when judging that this real power is greater than this pre-determined lower limit power, judges whether this real power is less than or equal to preset upper limit power.
In the present embodiment, system constraint power is the obtainable peak power of outdoor equipment.In heating process, namely carry out needing to leave suitable surplus when power controls, be then provided with pre-determined lower limit power and preset upper limit power.
Then this heating module 134 also comprises: sequencing unit 1344, for judging that this real power is greater than this pre-determined lower limit power at this judging unit 1342, and real power is when being less than or equal to this preset upper limit power, according to the heating weight order from big to small of each device to be heated, this device to be heated is sorted;
If this judging unit 1342 is also for judging that this real power is greater than this pre-determined lower limit power, and this real power is less than or equal to this preset upper limit power, then judging this sequencing unit 1344 sort after sequence be whether the count value of the device to be heated of 1 is less than the heating weight (namely the heating also not completing to this sequence the device to be heated being 1 is described) that this sequence is the device to be heated of 1, and this sequence after increasing is whether the heating voltage of the device to be heated of 1 is less than the second heating voltage that this sequence is the device to be heated of 1, heating processing unit 1343 is also that the count value of the device to be heated of 1 is less than the heating weight that this sequence is the device to be heated of 1 for judging at this judging unit 1342 to sort after this sequencing unit 1344 sorts, and this sequence after increasing is the heating voltage of the device to be heated of 1 when to be less than this sequence be second heating voltage of device to be heated of 1, with the first heating voltage for stepping increase this sequencing unit 1344 sort after sequence be the heating voltage of the device to be heated of 1, and be that the count value of the device to be heated of 1 adds 1 by this sequence, the heating voltage being the device to be heated of 1 by the sequence after increase again exports to this heater circuit 12, to trigger the heating voltage that this heater circuit 12 is the device to be heated of 1 according to the sequence after this increase, heat the device to be heated that this sequence is 1.
Wherein, the count value of this device to be heated is the number of times of the increase stepping that the heating voltage of this device to be heated after increase is corresponding, and pre-determined lower limit power is less than this preset upper limit power, and this preset upper limit power is less than this system constraint power.
More preferred, after microcontroller 13 for sorting in heating processing unit 1343 triggering heating is also the device to be heated of i, according to electric current and the voltage of the heating circuit of the current collection of current collection circuit 14, or heat the electric current of circuit and the electric current of voltage and outdoor equipment and voltage, upgrade real power and afterpower.
If then for this judging unit 1342, heating processing unit 1343 also judges that this real power is greater than this pre-determined lower limit power, this real power is less than or equal to this preset upper limit power, sequence is that the count value of the device to be heated of i+1 is less than the heating weight that this sequence is the device to be heated of i+1, and this sequence after increasing is the heating voltage of the device to be heated of i+1 when to be less than this sequence be second heating voltage of device to be heated of i+1, sort as the heating voltage of the device to be heated of i+1 with the first heating voltage for stepping increases after this sequencing unit 1344 sorts, and be that the count value of the device to be heated of i+1 adds 1 by this sequence, the heating voltage being the device to be heated of i+1 by the sequence after increase again exports to this heater circuit 12, to trigger the heating voltage of the device to be heated that this heater circuit 12 is i+1 according to the sequence after this increase, heat the device to be heated that this sequence is i+1,
Wherein, i be more than or equal to 1 positive integer.
More preferably, heating power dispensing unit 1341 is also for after the count value of the device to be heated being i that sorts is added 1 by heating processing unit 1343, equal if this sequence is the count value of the device to be heated of i the heating weight that sequence is the device to be heated of i, then the count value of the device to be heated being i by sequence resets; Wherein, i be more than or equal to 1 positive integer.
More preferably, heating processing unit 1343 is also for when judging unit 1342 judges that real power is greater than preset upper limit power, be the heating voltage that stepping reduces each device to be heated with the integral multiple of the first heating voltage or the first heating voltage, and the heating voltage of the device each to be heated after reduction is exported to respectively heater circuit corresponding to band heater element, to trigger heater circuit according to the heating voltage after reduction, heat this device to be heated.
In the present embodiment, by monitoring real power constantly, and when real power is greater than preset upper limit power, the heating voltage of each device to be heated of quick reduction, thus ensure that real power is less than or equal to preset upper limit power, thus be effectively applicable to the power input constrained systems such as PoE/PoE+.
In the present embodiment, for example, device to be heated is defined as there to be three devices in this outdoor equipment, introduce the technical scheme of the present embodiment in detail: before heating to device to be heated, forbidding outdoor equipment power supply, temperature collect module 11, every the first Preset Time, gathers the temperature of at least one device in outdoor equipment, and the temperature of the device of collection is inputed to microcontroller 13.Device determination module 131 to be heated in microcontroller 13 is according to the temperature of device each in this outdoor equipment and temperature threshold, determine that three devices need heating, these three need the device of heating all can be referred to as device to be heated, and by the temperature of Weight Acquisition module 132 according to three devices to be heated and the difference of temperature threshold, obtain the heating weight that each device to be heated is corresponding respectively.In addition, current collection circuit 14 is specifically for every the second Preset Time, gather electric current and the voltage of this heating circuit, and the electric current of this heating circuit and voltage are inputed in the heating power acquisition module 133 of microcontroller 13, to make heating power acquisition module 133 according to the electric current of this heating circuit and voltage, calculate real power, and pre-configured Upper Bound Power and this real power are subtracted each other, obtain afterpower.
In the present embodiment, microcontroller 13 regulates heating power by regulating heating voltage, therefore, heat heating power dispensing unit 1341 in module 134 according to heating weight corresponding to device to be heated each in three devices to be heated and afterpower, the second heating voltage of the first heating voltage and each device to be heated is set respectively.Wherein, this first heating voltage can be set to Δ v, and between the second heating voltage of each device to be heated can identical also can not be identical.
For example, suppose that the heating weight that in three devices to be heated, each device to be heated is corresponding is respectively 3,2,1, afterpower is 6W, then heat weight be 3 power corresponding to device to be heated be 6*3/6=3W, heating weight be 2 power corresponding to device to be heated be 6*2/6=2W, heating weight be 1 power corresponding to device to be heated be 6*1/6=1W.And then the power transfer calculated is become the second heating voltage that each device to be heated is corresponding, and will the second heating voltage be got distribute to the device to be heated of its correspondence.
When judging unit 1342 judges that real power is less than or equal to pre-determined lower limit power, illustrate that afterpower these three devices to be heated enough are all heated to peak power, then each device to be heated can obtain maximum heating power.Then heating processing unit 1343 is respectively according to the heating times of each device to be heated, successively with the first heating voltage, (Δ is v) for stepping increases the heating voltage of device to be heated, and the heating voltage of the device to be heated after increase is exported to heater circuit corresponding to this device to be heated 12, to trigger the heating voltage of heater circuit 12 according to the device to be heated after this increase, heat device to be heated.Such as: for a device to be heated, time initial, export Δ v to heater circuit 12, to make heater circuit 12 according to Δ v, this device to be heated is heated, correspondingly the count value of this device to be heated is added 1(initial time, the count value of this device to be heated is 0).With Δ v for stepping increases the heating voltage of this device to be heated, heating voltage after then increasing is 2 Δ v, and export 2 Δ v to heater circuit 12, to make heater circuit 12 according to 2 Δ v, this device to be heated is heated, correspondingly the count value of this device to be heated is added 1, then now the count value of this device to be heated is 2.Adopt above-mentioned adjustment heating voltage to regulate heating power, till the count value of this device to be heated equals the heating times of this device to be heated.
When judging unit 1341 judges that this real power is greater than this pre-determined lower limit power, and real power is when being less than or equal to preset upper limit power, explanation afterpower is not enough, namely each device to be heated can not be made to be heated to peak power, then sequencing unit 1344 according to the heating weight of each device to be heated from big to small, is treated heater element and is sorted.Such as: after sequencing unit 1344 sorts, the heating weight that sequence is the heating weight of the device to be heated of 1 is 3, sequence is the device to be heated of 2 is 2, and sequence is the heating weight of the device to be heated of 3 is 1.Time initial, sequence is the heating voltage of the device to be heated of 1 is Δ v, and exports to heater circuit 12, for this heater circuit 12 according to this Δ v, heat the device to be heated that this sequence is 1, correspondingly, note sequence is the count value of the device to be heated of 1 is 1.
Then wait for that current collection circuit 14 gathers the electric current and voltage heating circuit again, and the electric current of this heating circuit and voltage are exported to microcontroller 13.Heating power acquisition module 133 in microcontroller 13 calculates real power according to the electric current of this heating circuit and voltage again; At judging unit 1342, heating processing unit 1343 judges that this real power is greater than pre-determined lower limit power, and when being less than or equal to preset upper limit power, sequence is the heating voltage of the device to be heated of 2 is Δ v, and export to heater circuit 12, for this heater circuit 12 according to this Δ v, heat the device to be heated that this sequence is 2, correspondingly, note sequence is the count value of the device to be heated of 2 is 1.
Then wait for that current collection circuit 14 gathers the electric current and voltage heating circuit again, and the electric current of this heating circuit and voltage are exported to microcontroller 13.Heating power acquisition module 133 in microcontroller 13 calculates real power according to the electric current of this heating circuit and voltage again; At judging unit 1342, heating processing unit 1343 judges that this real power is greater than pre-determined lower limit power, and when being less than or equal to preset upper limit power, sequence is the heating voltage of the device to be heated of 3 is Δ v, and export to heater circuit 12, for this heater circuit 12 according to this Δ v, heat the device to be heated that this sequence is 3, correspondingly, note sequence is the count value of the device to be heated of 3 is 1.
Then wait for that current collection circuit 14 gathers the electric current and voltage heating circuit again, and the electric current of this heating circuit and voltage are exported to microcontroller 13.Heating power acquisition module 133 in microcontroller 13 calculates real power according to the electric current of this heating circuit and voltage again; At judging unit 1342, heating processing unit 1343 judges that this real power is greater than pre-determined lower limit power, and when being less than or equal to preset upper limit power, sequence is the heating voltage of the device to be heated of 1 is 2 Δ v, and export to heater circuit 12, for this heater circuit 12 according to this 2 Δ v, heat the device to be heated that this sequence is 2, correspondingly, note sequence is the count value of the device to be heated of 1 is 2.
Then wait for that current collection circuit 14 gathers the electric current and voltage heating circuit again, and the electric current of this heating circuit and voltage are exported to microcontroller 13.Heating power acquisition module 133 in microcontroller 13 calculates real power according to the electric current of this heating circuit and voltage again; And pre-configured Upper Bound Power and this real power are subtracted each other, obtain afterpower; At judging unit 1342, heating processing unit 1343 judges that this real power is greater than pre-determined lower limit power, and when being less than or equal to preset upper limit power, sequence is the heating voltage of the device to be heated of 2 is 2 Δ v, and export to heater circuit 12, for this heater circuit 12 according to this 2 Δ v, heat the device to be heated that this sequence is 2, correspondingly, note sequence is the count value of the device to be heated of 2 is 2.
Then wait for that current collection circuit 14 gathers the electric current and voltage heating circuit again, and the electric current of this heating circuit and voltage are exported to microcontroller 13.Heating power acquisition module 133 in microcontroller 13 calculates real power according to the electric current of this heating circuit and voltage again; And pre-configured Upper Bound Power and this real power are subtracted each other, obtain afterpower; Because sequence is that the count value of the device to be heated of 3 equals to sort the heating weight of the device to be heated being 3, therefore, at judging unit 1342, heating processing unit 1343 judges that this real power is greater than pre-determined lower limit power, and when being less than or equal to preset upper limit power, sequence is the heating voltage of the device to be heated of 1 is 3 Δ v, and export to heater circuit 12, for this heater circuit 12 according to this 3 Δ v, the device to be heated that this sequence is 1 is heated, correspondingly, note sequence is the count value of the device to be heated of 1 is 3.
It should be noted that, each to after the current acquisition of heater circuit, namely after real power and afterpower upgrade again, only change the heating voltage of a device to be heated, thus ensure that real power increases according to minimum step amount, prevent real power to be greater than preset upper limit power, enable heater circuit be applicable to the limited system of power input.
Also it should be noted that, after the count value of heating power dispensing unit 1341 also for heating the device to be heated that sequence is i in heating processing unit 1343 triggering adds 1, if sequence is the heating weight that the count value of the device to be heated of i equals the device to be heated that sequence is i, then the count value of the device to be heated being i by sequence resets; Wherein, i be more than or equal to 1 positive integer.It should be noted that, after the count value of device to be heated resets, obtain current real power and afterpower, and adopt said method to rejudge to heat the need of to above-mentioned heater element.
In addition, when three device heats to be heated complete, when being namely heated to its preset temperature, enable outdoor equipment power supply, makes outdoor equipment start working.Concrete, this microcontroller 13 also comprises: enable module, be connected with primary power with the power supply of outdoor equipment, when temperature for device each in outdoor equipment is all more than or equal to the temperature threshold of default each device, enable primary power, to the Power supply of outdoor equipment, starts to make outdoor equipment.
Also it should be noted that, start working in process at outdoor equipment, decline or outdoor equipment load reduction and cause some device heating to reduce when running into outside air temperature, when the temperature of those devices is lower than its temperature threshold, determine that this device is device to be heated, and can heat those devices to be heated, it is same as described above that it realizes principle, its difference is, current collection circuit 14 is specifically for every the second Preset Time, gather the electric current of this heater circuit and the electric current of outdoor equipment and voltage, and the electric current of this heater circuit and the electric current of outdoor equipment and voltage are inputed in the heating power acquisition module 133 of microcontroller 13, to make heating power acquisition module 133 according to the electric current of the electric current of this heating circuit and voltage and outdoor equipment and voltage, calculate real power, and pre-configured Upper Bound Power and this real power are subtracted each other, obtain afterpower.Wherein, the first Preset Time is not identical with the second Preset Time, arranges all according to actual needs.
Further, in yet another embodiment of the present invention, on above-mentioned Fig. 1 or basis embodiment illustrated in fig. 2, this heating circuit can also comprise: booster driving circuit, be connected with primary power with heater circuit 12 respectively, for low-voltage corresponding for primary power is elevated to high voltage, using by the drive level of this high voltage as the field effect transistor (MOSFET) in heater circuit.
Preferably, if microcontroller 13 is also for judging that in this outdoor equipment, the environment temperature of each device in the 3rd preset time period is all greater than the temperature threshold of respective devices, then trigger this heating circuit and enter dormant state respectively.
In the present embodiment, if heat circuit to detect that the temperature of each device in outdoor equipment is all greater than its preset temperature for a long time, then show that this outdoor equipment is in hot environment, and (such as: the working environment of this outdoor equipment is working environment in summer) in hot environment may be in for a long time, then heater circuit can also reduce the frequency of temperature acquisition and current acquisition, namely the first Preset Time and the second Preset Time is lengthened, and make microcontroller 13 enter dormant state, thus reduce the power attenuation of heater circuit self, reach energy-conservation object.
Fig. 3 is the process flow diagram of the embodiment that the present invention is based on the heating treatment method heating circuit, as shown in Figure 3, the executive agent of the method for the present embodiment is for heating circuit, the heating circuit of its structure as shown in above-mentioned Fig. 1 and Fig. 2, it is similar that it realizes principle, repeats no more herein.The method comprises:
Step 101, every the first Preset Time, obtain the temperature of each device in outdoor equipment.
If step 102 is according to the temperature threshold of the temperature of each device and default each device, determine to exist at least one device to be heated time, according to temperature and the temperature threshold of at least one device to be heated, at least one device to be heated is heated.
In the present embodiment, by obtaining the temperature of each device in outdoor equipment every the first Preset Time, if according to the temperature of each device and the temperature threshold of default each device, when determining to exist at least one device to be heated, according to temperature and the temperature threshold of at least one device to be heated, at least one device to be heated is heated, thus solve in prior art owing to not considering the operating ambient temperature of each device, the problem that the heating power utilization factor caused only by the operating ambient temperature of the next overall raising outdoor equipment of external heating mode is low.
Fig. 4 is the process flow diagram of another embodiment that the present invention is based on the heating treatment method heating circuit, and on above-mentioned basis embodiment illustrated in fig. 3, as shown in Figure 4, before step 102, the method also comprises:
Step 103, every the second Preset Time, gather and heat the electric current of circuit and voltage, or the electric current of the electric current of this heating circuit and voltage and this outdoor equipment and voltage.
Then a kind of specific implementation of step 102 is:
Step 102a, according to the temperature of each device to be heated and temperature threshold, obtain the heating weight that each device to be heated is corresponding respectively.
Step 102b, according to the electric current of this heating circuit and voltage, or heat the electric current of circuit and the electric current of voltage and this outdoor equipment and voltage, calculate real power; And system constraint power and this real power are subtracted each other, obtain afterpower.
Step 102c, respectively according to heating weight corresponding to each device to be heated and real power and afterpower, each device to be heated to be heated.
In addition, preferably, step 102c specifically comprises:
Step 201, according to heating weight corresponding to each device to be heated and afterpower, the second heating voltage of the first heating voltage and each device to be heated is set respectively.
Step 202, judge whether real power is less than or equal to pre-determined lower limit power, if be less than or equal to, then perform step 203; If be greater than, then perform step 204.
Step 203, respectively according to the heating weight of each device to be heated, successively with the first heating voltage for stepping increases the heating voltage of this device to be heated, and according to the heating voltage of the device to be heated after each increasing, heat this device to be heated.Terminate.
Wherein, it should be noted that, all determine that current real power is less than or equal to pre-determined lower limit power before the heating voltage of each increase device to be heated after first time, the second heating voltage of each device to be heated is the integral multiple of the first heating voltage; System constraint power is greater than pre-determined lower limit power, and heating weight is positive integer.
Step 204, judge whether real power is less than or equal to preset upper limit power; If be less than or equal to, then perform step 205; If be greater than, then perform step 209.
Step 205, heating weight order from big to small according to each device to be heated, sort to this device to be heated;
Whether step 206, the count value of device to be heated judging to sort for i are less than the heating weight of the device to be heated that sequence is i, the second heating voltage that this sequence is the device to be heated of i whether is less than with the heating voltage that the sequence after increase is the device to be heated of i, if be all less than, then perform step 207, if sequence is the heating weight that the count value of the device to be heated of i equals the device to be heated that sequence is i, then perform step 210.
In the present embodiment, time initial, i equals 1; Wherein, i is integer, and i is more than or equal to 1, is less than N.
Step 207, increase sequence for the heating voltage of the device to be heated of i with the first heating voltage, and the count value sorted as the device to be heated of i is added 1, the heating voltage being the device to be heated of i according to the sequence after increase again heats the device to be heated that described sequence is i, and i is added 1.
Wherein, pre-determined lower limit power is less than preset upper limit power, and preset upper limit power is less than system constraint power.
Step 208, according to the electric current of heating circuit gathered and voltage, or the electric current of the electric current of this heating circuit and voltage and this outdoor equipment and voltage, upgrade this real power and this states afterpower; And perform step 204.
Step 209, be the heating voltage that stepping reduces each device to be heated with the integral multiple of the first heating voltage or the first heating voltage.Terminate.
Step 210, the count value clearing of will sort as the device to be heated of i, and perform step 204.
Further, at the process flow diagram of another embodiment of the present invention, on above-mentioned basis embodiment illustrated in fig. 3, the method also comprises:
When in outdoor equipment, the temperature of each device is more than or equal to the temperature threshold of default each device, the power supply of enable outdoor equipment is that outdoor equipment is powered, and starts to make outdoor equipment.
Or
If judge, in outdoor equipment, the environment temperature of each device in the 3rd Preset Time is greater than the temperature threshold of device, then trigger heating circuit and enter dormant state, the 3rd Preset Time is not less than the first Preset Time.
One of ordinary skill in the art will appreciate that: all or part of step realizing above-mentioned each embodiment of the method can have been come by the hardware that programmed instruction is relevant.Aforesaid program can be stored in a computer read/write memory medium.This program, when performing, performs the step comprising above-mentioned each embodiment of the method; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (15)
1. heat a circuit, it is characterized in that, comprising: at least one temperature collection circuit, at least one heater circuit and microcontroller; Wherein,
Each temperature collection circuit, be connected with described microcontroller, for every the first Preset Time, gather the temperature of at least one device corresponding with described temperature collection circuit in outdoor equipment, and the temperature of at least one device described is inputed to described microcontroller;
Described microcontroller, be connected with each heater circuit respectively, if for temperature and the temperature threshold of each device preset of each device in the described outdoor equipment that inputs respectively according at least one temperature collection circuit described, determine to exist at least one device to be heated time, according to temperature and the temperature threshold of at least one device to be heated described, the heater circuit triggering at least one device to be heated described corresponding heats device to be heated described at least one respectively;
Wherein, the temperature of each device to be heated is all less than the temperature threshold of described device to be heated;
Also comprise: current collection circuit, be connected with described microcontroller; Described current collection circuit is used for every the second Preset Time, gather electric current and the voltage of described heating circuit, and the electric current of described heating circuit and voltage are inputed to described microcontroller, or, for every the second Preset Time, gather the electric current of described heating circuit and the electric current of voltage and described outdoor equipment and voltage, and the electric current of described heating circuit and the electric current of voltage and described outdoor equipment and voltage are inputed to described microcontroller;
Then described microcontroller comprises:
Device determination module to be heated, is connected with described each temperature collection circuit respectively, for according to the temperature of device each in described outdoor equipment and the temperature threshold of default each device, determines to there is at least one device to be heated; Wherein, the temperature of at least one device to be heated described is less than the temperature threshold of described device to be heated;
Weight Acquisition module, for according to each described temperature of device to be heated and the difference of temperature threshold, obtains the heating weight that each described device to be heated is corresponding respectively;
Heating power acquisition module, for according to the electric current of described heating circuit and voltage, or the electric current of described heating circuit and the electric current of voltage and described outdoor equipment and voltage, calculate real power; And system constraint power and described real power are subtracted each other, obtain afterpower;
Heat module, the described real power that the heating weight corresponding for each described device to be heated got according to described Weight Acquisition module and described heating power acquisition module get and described afterpower, the heater circuit triggering at least one device to be heated described corresponding heats described device to be heated.
2. heating circuit according to claim 1, is characterized in that, described microcontroller also comprises:
Enable module, be connected with primary power with the power supply of described outdoor equipment, when temperature for device each in described outdoor equipment is all more than or equal to the temperature threshold of default each device, the Power supply of described outdoor equipment given by enable described primary power, starts to make described outdoor equipment.
3. heating circuit according to claim 1, is characterized in that, described heating module comprises:
Heating power dispensing unit, the heating weight that each described device to be heated for getting according to described Weight Acquisition module is corresponding and described afterpower, arrange the second heating voltage of the first heating voltage and each described device to be heated respectively;
Judging unit, for judging whether the described real power that described heating power acquisition module gets is less than or equal to pre-determined lower limit power;
Heating processing unit, for when described judging unit judges that described real power is less than or equal to described pre-determined lower limit power, respectively according to the heating weight of each described device to be heated, successively with the heating voltage of described first heating voltage for the described device to be heated of stepping increase, and the heating voltage of device to be heated after at every turn increasing is exported to the heater circuit corresponding with described device to be heated, to trigger the heating voltage of described heater circuit according to the device to be heated after described increase, heat described device to be heated, wherein, all determine that current real power is less than or equal to described pre-determined lower limit power before increasing the heating voltage of described device to be heated after first time at every turn,
Wherein, the second heating voltage of each described device to be heated is the integral multiple of described first heating voltage; Described system constraint power is greater than described pre-determined lower limit power; Described heating weight is positive integer.
4. heating circuit according to claim 3, is characterized in that, described judging unit, also for when judging that described real power is greater than described pre-determined lower limit power, judges whether described real power is less than or equal to preset upper limit power;
Then described heating module also comprises:
Sequencing unit, for judging that at described judging unit described real power is greater than described pre-determined lower limit power, and described real power is when being less than or equal to described preset upper limit power, according to the heating weight order from big to small of each described device to be heated, described device to be heated is sorted;
If described judging unit is also for judging that described real power is greater than described pre-determined lower limit power, and described real power is less than or equal to described preset upper limit power, whether the count value of device to be heated that after then judging the sequence of described sequencing unit, sequence is i is less than the heating weight that described sequence is the device to be heated of i, and the described sequence after increasing is whether the heating voltage of the device to be heated of i is less than the second heating voltage that described sequence is the device to be heated of i;
Described heating processing unit also sorts as the count value of the device to be heated of i is less than the heating weight that described sequence is the device to be heated of i for judge the sequence of described sequencing unit at described judging unit after, and the described sequence after increasing is the heating voltage of the device to be heated of 1 when to be less than described sequence be second heating voltage of device to be heated of i, with the described first heating voltage heating voltage that after described sequencing unit sequence, sequence is the device to be heated of i for stepping increases, and be that the count value of the device to be heated of i adds i by described sequence, the heating voltage being the device to be heated of 1 by the sequence after increase again exports to described heater circuit, to trigger the heating voltage of the device to be heated that described heater circuit is i according to the sequence after described increase, heat the device to be heated that described sequence is i,
Described microcontroller is also for triggering after the described sequence of heating is the device to be heated of i at described heating processing unit, according to electric current and the voltage of the heating circuit of the current collection of described current collection circuit, or the electric current of described heating circuit and the electric current of voltage and described outdoor equipment and voltage, upgrade described real power and described afterpower;
If then for described judging unit, described heating processing unit also judges that described real power is greater than described pre-determined lower limit power, described real power is less than or equal to described preset upper limit power, sequence is that the count value of the device to be heated of i+1 is less than the heating weight that described sequence is the device to be heated of i+1, and the described sequence after increasing is the heating voltage of the device to be heated of i+1 when to be less than described sequence be second heating voltage of device to be heated of i+1, with the described first heating voltage heating voltage that after described sequencing unit sequence, sequence is the device to be heated of i+1 for stepping increases, and be that the count value of the device to be heated of i+1 adds 1 by described sequence, the heating voltage being the device to be heated of i+1 by the sequence after increase again exports to described heater circuit, to trigger the heating voltage of the device to be heated that described heater circuit is i+1 according to the sequence after described increase, heat the device to be heated that described sequence is i+1,
Wherein, the count value of described device to be heated is the number of times of the increase stepping that the heating voltage of device described to be heated after increasing is corresponding; Described pre-determined lower limit power is less than described preset upper limit power, and described preset upper limit power is less than described system constraint power; I be more than or equal to 1 positive integer.
5. heating circuit according to claim 4, it is characterized in that, described heating power dispensing unit is also for after the count value of the device to be heated being i that sorts is added 1 by described heating processing unit, if the count value that described sequence is the device to be heated of i equals the heating weight that described sequence is the device to be heated of i, be then that the count value of the device to be heated of i resets by described sequence; Wherein, i be more than or equal to 1 positive integer.
6. heating circuit according to claim 4, it is characterized in that, described heating processing unit is also for when described judging unit judges that described real power is greater than described preset upper limit power, be the heating voltage that stepping reduces each described device to be heated with the integral multiple of described first heating voltage or described first heating voltage, and the heating voltage of each described device to be heated after reduction is exported to heater circuit corresponding to described device to be heated respectively, to trigger described heater circuit according to the heating voltage after described reduction, heat described device to be heated.
7., according to the arbitrary described heating circuit of Claims 1-4, it is characterized in that, also comprise:
Booster driving circuit, is connected with primary power with described heater circuit respectively, for corresponding for described primary power low-voltage is elevated to high voltage, using by the drive level of described high voltage as the MOSFET in described heater circuit.
8. heating circuit according to claim 1, it is characterized in that, described microcontroller also for, if judge respectively, in described outdoor equipment, the environment temperature of each device in the 3rd preset time period is all greater than the temperature threshold of respective devices, then trigger described heating circuit and enter dormant state.
9., based on the heating treatment method heating circuit, it is characterized in that, comprising:
Every the first Preset Time, obtain the temperature of each device in outdoor equipment;
If according to the temperature of each device and the temperature threshold of each device preset, determine to exist at least one device to be heated time, according to temperature and the temperature threshold of at least one device to be heated described, at least one device to be heated described is heated;
The temperature of at least one device to be heated described in described basis and temperature threshold, before heating at least one device to be heated described, described method also comprises:
Every the second Preset Time, gather electric current and the voltage of described heating circuit, or the electric current of described heating circuit and the electric current of voltage and described outdoor equipment and voltage;
The then temperature of at least one device to be heated described in described basis and temperature threshold, heats at least one device to be heated described, comprising:
According to temperature and the temperature threshold of each described device to be heated, obtain the heating weight that each described device to be heated is corresponding respectively;
According to electric current and the voltage of described heating circuit, or the electric current of described heating circuit and the electric current of voltage and described outdoor equipment and voltage, calculate real power; And system constraint power and described real power are subtracted each other, obtain afterpower;
Respectively according to heating weight corresponding to each described device to be heated and described real power and described afterpower, each described device to be heated is heated.
10. the heating treatment method based on heating circuit according to claim 9, it is characterized in that, the temperature of at least one device to be heated described in described basis and temperature threshold, after heating at least one device to be heated described, described method also comprises:
When in described outdoor equipment, the temperature of each device is more than or equal to the temperature threshold of default each device, the power supply of enable described outdoor equipment is that described outdoor equipment is powered, and starts to make described outdoor equipment.
11. heating treatment methods based on heating circuit according to claim 10, it is characterized in that, described respectively according to heating weight corresponding to each described device to be heated and described real power and described afterpower, each described device to be heated is heated, comprising:
The heating weight corresponding according to each described device to be heated and described afterpower, arrange the second heating voltage of the first heating voltage and each described device to be heated respectively;
When judging that described real power is less than or equal to described pre-determined lower limit power, respectively according to the heating weight of each described device to be heated, successively with the heating voltage of described first heating voltage for the described device to be heated of stepping increase, and according to the heating voltage of the device to be heated after each increasing, heat described device to be heated;
Wherein, all determine that current real power is less than or equal to pre-determined lower limit power before the heating voltage of each increase device to be heated after first time, the second heating voltage of each device to be heated is the integral multiple of described first heating voltage; Described system constraint power is greater than described pre-determined lower limit power; Described heating weight is positive integer.
12. heating treatment methods based on heating circuit according to claim 11, it is characterized in that, the described heating weight corresponding according to each described device to be heated and described afterpower, after arranging the second heating voltage of the first heating voltage and each described device to be heated respectively, described method also comprises:
Judging that described real power is greater than described pre-determined lower limit power, and when described real power is less than or equal to described preset upper limit power, according to the heating weight order from big to small of each described device to be heated, described device to be heated is being sorted;
Judging that the count value sorted as the device to be heated of i is less than the heating weight that described sequence is the device to be heated of i, and the described sequence after increasing is the heating voltage of the device to be heated of 1 when to be less than described sequence be second heating voltage of device to be heated of i, the heating voltage of sequence for the device to be heated of i is increased according to described first heating voltage, and be that the count value of the device to be heated of i adds i by described sequence, then heat according to the heating voltage that the sequence after increasing is the device to be heated of i the device to be heated that described sequence is i;
Described is that the heating voltage of the device to be heated of 1 heats after described sequence is the device to be heated of i according to the sequence after increasing, according to electric current and the voltage of the heating circuit gathered, or the electric current of described heating circuit and the electric current of voltage and described outdoor equipment and voltage, upgrade described real power and described afterpower;
Real power after upgrading if judge is greater than described pre-determined lower limit power, and be less than or equal to described preset upper limit power, and be less than in the count value for the device to be heated of i+1 that sorts the heating weight that described sequence is the device to be heated of i+1, and the described sequence after increasing is the heating voltage of the device to be heated of i+1 when to be less than described sequence be second heating voltage of device to be heated of i+1, with the described first heating voltage heating voltage that after described sequencing unit sequence, sequence is the device to be heated of i+1 for stepping increases, and be that the count value of the device to be heated of i+1 adds 1 by described sequence, the heating voltage being the device to be heated of i+1 according to the sequence after increase again heats the device to be heated that described sequence is i+1,
Wherein, described pre-determined lower limit power is less than described preset upper limit power, and described preset upper limit power is less than described system constraint power; I be more than or equal to 1 positive integer.
13. heating treatment methods based on heating circuit according to claim 12, is characterized in that, after the count value of the device to be heated being i that sorts adds 1, described method also comprises:
If the count value that described sequence is the device to be heated of i equals the heating weight that described sequence is the device to be heated of i, be then that the count value of the device to be heated of i resets by described sequence; Wherein, i be more than or equal to 1 positive integer.
14. heating treatment methods based on heating circuit according to claim 12, it is characterized in that, described is that the heating voltage of the device to be heated of i+1 heats after described sequence is the device to be heated of i+1 according to the sequence after increasing, and described method also comprises:
When judging that described real power is greater than described preset upper limit power, be the heating voltage that stepping reduces each described device to be heated with the integral multiple of described first heating voltage or described first heating voltage.
15. according to the arbitrary described heating treatment method based on heating circuit of claim 9 to 14, and it is characterized in that, described every the first Preset Time, after obtaining the temperature of each device in outdoor equipment, described method also comprises:
If judge, in described outdoor equipment, the environment temperature of each device in the 3rd Preset Time is greater than the temperature threshold of described device, then trigger described heating circuit and enter dormant state, the 3rd Preset Time is not less than described first Preset Time.
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| CN105739568B (en) * | 2016-03-07 | 2018-12-25 | 四川长虹电器股份有限公司 | A kind of method and heating equipment controlling electric heater capacity |
| CN107889286B (en) * | 2017-11-06 | 2021-03-12 | 广东美的厨房电器制造有限公司 | Electric cooker and control method and controller thereof |
| CN111319210B (en) * | 2018-12-14 | 2021-08-10 | 广州捷克易自动化设备有限公司 | Intelligent hot runner temperature control method and temperature control system |
| CN114942661B (en) * | 2022-07-20 | 2022-11-08 | 中国科学院精密测量科学与技术创新研究院 | Temperature control device and method for miniature Mz optical pump atomic sensor |
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| US8097835B2 (en) * | 2009-12-28 | 2012-01-17 | Hon Hai Precision Industry Co., Ltd. | Temperature control circuit |
| CN102645939A (en) * | 2012-05-09 | 2012-08-22 | 张正良 | Temperature control cabinet of electronic equipment |
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| US8097835B2 (en) * | 2009-12-28 | 2012-01-17 | Hon Hai Precision Industry Co., Ltd. | Temperature control circuit |
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