CN1737720A - Temperature control system and control method for low-temperature sensitive equipment - Google Patents
Temperature control system and control method for low-temperature sensitive equipment Download PDFInfo
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- CN1737720A CN1737720A CN 200410058255 CN200410058255A CN1737720A CN 1737720 A CN1737720 A CN 1737720A CN 200410058255 CN200410058255 CN 200410058255 CN 200410058255 A CN200410058255 A CN 200410058255A CN 1737720 A CN1737720 A CN 1737720A
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Abstract
This invention discloses one temperature control system with low temperature sensor device, which comprises the following parts: power module to supply power to system; temperature test and control module to test temperature and to control first switch module according to test results; first switch module to control heater switch; heater to heating up sensor device; low temperature sensitive supply power to supply power to sensitive parts; second switch module to test and control the power switch. This invention discloses one temperature control method.
Description
Technical field
The present invention relates to domain of control temperature, be meant a kind of low-temperature sensitive device temperature control system and temperature-controlled process especially.
Background technology
Existing electronic and electrical equipment, particularly communication class sophisticated electronic electric equipment lay particular emphasis on indoor use mostly, utilize the room air circulation few, and the characteristics that easy control of temperature, temperature are relatively stable are guaranteed the stable operation of electronic and electrical equipment.But, along with the raising of people's living standard, the demand of communication sharply being increased, telecom operators wish to build a collection of communication site cheaply fast.For realizing the low cost of communication site, need equipment itself cheap on the one hand, require machine room facility input also to reduce on the other hand as far as possible.Reduce machine room facility input, it is outdoor that the easiest method makes that exactly equipment can work in, and is outdoor version equipment.Like this, require the equipment all weather operations, variation of temperature must be able to conform.
Can adapt to all weather operations for satisfying equipment, existing implementation normally adopts military products or technical grade components and parts.Adopt this scheme, because the price of general military products device is 5～10 times of business level device price, technical grade device price is 2～3 times of business level device price, causes costing an arm and a leg of equipment.
Because such scheme costs an arm and a leg, and can not effectively reduce cost, some equipment manufacturers has adopted another scheme, promptly adopts the temperature control system of business level device in conjunction with the simple heating heating mode.Its temperature control system figure comprises temperature detection and control module, AC-DC conversion (AD/DC) modular converter and switch module as shown in Figure 1.Cross when low when temperature detection and control module detect temperature, the gauge tap module is opened, and well heater powers on, system begins to heat up, and when temperature detection and control module detected temperature and be elevated to the temperature value of setting, switch module was closed, the well heater outage stops heating.
Adopt the business level device in conjunction with this scheme of simple heating heating mode, temperature detection and control module are control heater, cross heater when low when detecting temperature, the power supply of low-temperature sensitive device are not controlled.Like this, under cold environment, though opened the well heater intensification because temperature is hanged down, but owing to do not close the power supply of low-temperature sensitive device, being easy to occur temperature does not also rise in the time of can guaranteeing that the low-temperature sensitive device can operate as normal, the low-temperature sensitive device has just begun work, causes low-temperature sensitive component failure or operation exception, thereby the reliability of equipment operation can not get ensureing.
Summary of the invention
In view of this, first fundamental purpose of the present invention is to provide a kind of temperature control system, and this system can guarantee that the low-temperature sensitive device rises to it can operate as normal the time at system temperature, just starts working.
Second fundamental purpose of the present invention is to provide a kind of temperature-controlled process, and this method can guarantee that the low-temperature sensitive device rises to it can operate as normal the time at system temperature, just starts working.
In order to reach above-mentioned first fundamental purpose, the invention provides a kind of low-temperature sensitive device temperature control system, comprising:
Power module is used to system that power supply is provided;
Temperature detection and control module are used for temperature is detected, and control first switch module according to testing result;
First switch module is used for the opening and closing of control heater;
Well heater is used to low-temperature sensitive equipment to heat up;
The power supply of low-temperature sensitive device is used to the low-temperature sensitive device that power supply is provided;
The second switch module is used for controlling according to the temperature detection result of temperature detection and control module the opening and closing of the power supply of low-temperature sensitive device;
In described temperature detection and control module, be provided with the first control threshold temperature, this first control threshold temperature is corresponding to the minimum temperature of low-temperature sensitive device operate as normal, if detecting Current Temperatures, temperature detection and control module be lower than this first control threshold temperature, then make well heater be in opening, and make the power supply of low-temperature sensitive device be in closed condition by control second switch module by controlling first switch module; Be higher than this first control threshold temperature if temperature detection and control module detect Current Temperatures, then make the power supply of low-temperature sensitive device be in opening by control second switch module.
Preferably, further be provided with the second control threshold temperature in temperature detection and the control module, this second control threshold temperature is higher than the first control threshold temperature, and be lower than the maximum temperature of assurance equipment operate as normal, be higher than this second control threshold temperature if temperature detection and control module detect Current Temperatures, then make well heater be in closed condition by controlling first switch module.
Preferably, temperature detection and control module are temperature sensing controller.
Switch module can be transistor.
Switch module can also be low power relay.
In order to reach above-mentioned second fundamental purpose, the present invention also provides a kind of low-temperature sensitive device temperature control method, and the method comprising the steps of:
A, temperature is detected, be lower than the first control threshold temperature if detect Current Temperatures, control heater makes it be in opening, and the power supply of control low-temperature sensitive device makes it be in closed condition.
Steps A further comprises: be higher than the first control threshold temperature if detect Current Temperatures, the power supply of control low-temperature sensitive device makes it be in opening.
Before steps A, further comprise:
The first control threshold temperature is set, and this first control threshold temperature is corresponding to the minimum temperature of low-temperature sensitive device operate as normal.
Preferably, before the steps A, further comprise: the power supply that the low-temperature sensitive device is set is opened back stagnant temperature, and the power supply of this low-temperature sensitive device is opened back stagnant temperature and is higher than the first control threshold temperature, and then steps A further comprises:
Open back stagnant temperature if detect the power supply that Current Temperatures is higher than the low-temperature sensitive device, the power supply of control low-temperature sensitive device makes it be in opening; If the power supply of low-temperature sensitive device was opening originally, be lower than first control during threshold temperature when detecting Current Temperatures, close the power supply of low-temperature sensitive device.
Steps A may further include:
Equal the first control threshold temperature if detect Current Temperatures, make the power supply of low-temperature sensitive device be in closed condition; Open back stagnant temperature if detect the power supply that Current Temperatures equals the low-temperature sensitive device, make the power supply of low-temperature sensitive device be in opening.
Preferably, the power supply of described low-temperature sensitive device is opened back stagnant temperature and is higher than first at least 2 degrees centigrade of the threshold temperatures of control.
Preferably, further comprise before the steps A: the second control threshold temperature is set, and this second control threshold temperature is higher than the first control threshold temperature, and is lower than the maximum temperature of assurance equipment operate as normal; Then steps A further comprises:
Temperature is detected, be higher than the second control threshold temperature, make well heater be in closed condition if detect Current Temperatures.
Preferably, further comprise before the steps A: well heater is set opens back stagnant temperature, this well heater is opened back stagnant temperature and is lower than the second control threshold temperature; Then steps A further comprises:
If the well heater previous status is a closed condition, when detecting Current Temperatures and be lower than well heater and open back stagnant temperature, heater.
Preferably, steps A further comprises: equal the second control threshold temperature if detect Current Temperatures, close well heater; If detecting Current Temperatures equals well heater and opens back stagnant temperature, heater.
Preferably, the second control gate limit for height is opened back at least 2 degrees centigrade of stagnant temperature in well heater.
Preferably, the first control threshold temperature is the minimum temperature of the low-temperature sensitive device operate as normal in the equipment, and the second control threshold temperature is higher than 5 to 30 degrees centigrade of the first control threshold temperatures.
By such scheme as can be seen, in the temperature control system in the present invention, temperature detection and control module are not only controlled well heater, also the power supply of low-temperature sensitive device is controlled, guaranteed that the low-temperature sensitive device can operate as normal, thereby increased the serviceable life of low-temperature sensitive device, improved the reliability of equipment greatly.
In the temperature-controlled process in the present invention, because the power supply of well heater and low-temperature sensitive device is all controlled, guaranteed that the low-temperature sensitive device can operate as normal, thereby increased the serviceable life of low-temperature sensitive device greatly, also improved the reliability of equipment greatly; And open back stagnant temperature and well heater is opened back stagnant temperature by the power supply that the low-temperature sensitive device is set, make opening and closing use different thresholdings to control, the continuous opening and closing of switch module that temperature causes have been prevented when threshold temperature point fluctuates, increase the serviceable life of these elements, also increased the stability of temperature control system and entire equipment.
Description of drawings
Fig. 1 is the temperature control system figure of prior art;
Fig. 2 is the temperature control system figure in the specific embodiment of the invention one;
Fig. 3 is the schematic diagram of temperature sensing controller in the first embodiment of the invention;
Fig. 4 reaches back the dead zone synoptic diagram for temperature of the present invention is provided with thresholding;
Fig. 5 is to the control flow chart of the power supply of low-temperature sensitive device in the specific embodiment of the invention two;
Fig. 6 is to the control flow chart of well heater in the specific embodiment of the invention two;
Fig. 7 is the control flow chart of the specific embodiment of the invention three.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Main thought of the present invention is: by the power supply of control low-temperature sensitive device; the low-temperature sensitive device is crossed when hanging down in temperature not to power on; after treating that temperature is elevated to particular value, just open the power supply of low-temperature sensitive device, thereby realize protection the low-temperature sensitive device.
The first embodiment of the present invention is a kind of temperature control system, and as shown in Figure 2, this temperature control system comprises the power supply of temperature detection and control module, switch module 1, switch module 2, well heater, power module and low-temperature sensitive device; Wherein, power module comprises AC power and AD/DC module, is used to system that power supply is provided; Switch module 1 is used for the opening and closing of control heater; Switch module 2 is used to control the opening and closing of low-temperature sensitive device power supply; Temperature detection and control module are used for detected temperatures, and according to the temperature that detection obtains switch module 1 and switch module 2 are controlled.
Temperature detection and control module are provided with temperature control thresholding, according to the temperature that the temperature control thresholding that is provided with and detection obtain, switch module 1 and switch module 2 are controlled.
Temperature detection and control module are as follows to being provided with of temperature control thresholding: the control thresholding temperature t 1 of power supply of low-temperature sensitive device and the control thresholding temperature t 4 of well heater are set in temperature detection and control module, and by the hysteresis comparator in the temperature detecting module, time stagnant temperature return difference Δ t1 of the control thresholding temperature t 1 of low-temperature sensitive device power supply is set, and time stagnant temperature return difference Δ t2 of well heater control thresholding temperature t 4, utilize the above temperature return difference, time stagnant temperature t 2=t1+ Δ t1 of the power supply control threshold temperature of low-temperature sensitive device; Time stagnant temperature t 3=t4-Δ t2 of well heater control threshold temperature; Wherein, the purpose of carrying out said temperature return difference design is: prevent temperature when thresholding changes up and down, the frequent opening and closing well heater or the power supply of low-temperature sensitive device.
Wherein, in the present invention, the temperature of the above t1 and t4 is chosen scope and is set according to the low temperature range that the low-temperature sensitive device in the equipment can operate as normal, generally, the minimum temperature that is set at the work of assurance low-temperature sensitive device of t1, t4 is higher 5～30 ℃ than t1; Temperature return difference Δ t1 can be identical with Δ t2, also can be different, and the scope of choosing is: Δ t1 〉=2 ℃; Δ t2 〉=2 ℃.
Temperature detection and control module detect system temperature, temperature control thresholding according to result who detects and setting, switch module 1 and switch module 2 are controlled, switch module 2 opens or closes the power supply of low-temperature sensitive device to its control according to temperature detection and control module, switch module 1 is according to the control to it of temperature detection and control module, open or close well heater, thereby realize the control to well heater and low-temperature sensitive device, the general control procedure of temperature control system is as follows:
If detecting Current Temperatures, temperature detection and control module be lower than t1, then make the power supply of low-temperature sensitive device be in closed condition by off switch module 2, and make well heater be in opening by opening switch module 1, thereby make Current Temperatures be lower than the low-temperature sensitive device can operate as normal temperature the time, one side is the rising Current Temperatures by the heating of well heater, make the low-temperature sensitive device not work on the other hand, thereby avoid this component failure or unusual; Be higher than t4 if temperature detection and control module detect Current Temperatures, then make well heater be in closed condition, make Current Temperatures no longer owing to the heating of well heater raises by off switch module 1;
Consider the temperature return difference, the control procedure of this temperature control system can also for:
If detecting temperature, temperature detection and control module be lower than t1, then by off switch module 2, make the power supply of low-temperature sensitive device be in closed condition, and by opening switch module 1 heater, along with temperature rises, when Current Temperatures reaches t1, for fear of near the power supply of this temperature spot t1, opening or closing the low-temperature sensitive device repeatedly, still make the power supply of low-temperature sensitive device be in closed condition, when treating that temperature continues to rise to described time stagnant temperature t 2, temperature detection and control module are opened the power supply of low-temperature sensitive devices by opening switch module 2 again; If Current Temperatures is in temperature-fall period, then consistent with aforesaid general control procedure to the control of the power supply of well heater and low-temperature sensitive device, thereby make that the power supply of low-temperature sensitive device is changed into closed condition by opening when temperature is reduced to t1; This shows,, can avoid near temperature spot t1, opening repeatedly or closing the power supply of low-temperature sensitive device by adopting back stagnant temperature t 2;
If detecting temperature, temperature detection and control module be higher than t4, then by opening switch module 2, make the power supply of low-temperature sensitive device be in opening, and determine by the off switch mould and 1 to make well heater be in closed condition, along with temperature descends, when Current Temperatures reaches t4, for fear of near this temperature spot t4, opening or close well heater repeatedly, still make well heater be in closed condition, when treating that temperature continues to drop to described time stagnant temperature t 4, temperature detection and control module are again by opening switch module 1 heater; If Current Temperatures is in temperature-rise period, then consistent with aforesaid general control procedure to the control of the power supply of well heater and low-temperature sensitive device, thus make that well heater is changed into closed condition by opening when temperature rises to t4; This shows,, can avoid near temperature spot t4, opening repeatedly or closing well heater by adopting back stagnant temperature t 4.
In the present embodiment, the preferred programmable temperature sensing controller TMP01FS of temperature detection and control module, its schematic diagram is as shown in Figure 3.The TMP01FS temperature sensing controller has two-way output, wherein/the OVER output terminal is connected with switch module 1, and/UNDER output terminal is connected with switch module 2.Three resistance of the periphery by regulating TMP01FS are realized the setting of temperature spots.The corresponding t4 that is provided with of SET HIGH, the corresponding t1 that is provided with of SET LOW, Δ t1 is all Δ t with Δ t2 mutually at this, and the setting of t1, t4 and temperature return difference Δ t is by being provided with and selecting programming resistors to realize.
Switch module 1 in the present embodiment and switch module 2 can be transistor or low power relay.
The second embodiment of the present invention is a kind of low-temperature sensitive device temperature control method, this method is applied to exist in the equipment of low-temperature sensitive device, according to the testing result of temperature and the threshold temperature of setting, the power supply of well heater in the equipment and low-temperature sensitive device is controlled.Power supply and well heater to the low-temperature sensitive device in the present embodiment are controlled respectively.
Control procedure to the low-temperature sensitive device is as follows:
Set in advance the stagnant temperature return difference Δ t1 that returns of the control thresholding temperature t 1 of power supply of low-temperature sensitive device and t1, utilize this temperature return difference, the power supply control threshold temperature of low-temperature sensitive device return stagnant temperature t 2=t1+ Δ t1; Wherein, the purpose of carrying out said temperature return difference design is: prevent temperature when thresholding changes up and down, the power supply of frequent opening and closing low-temperature sensitive device.
System temperature is detected, and according to the temperature control thresholding of result who detects and setting, it is as follows that the power supply of low-temperature sensitive device is carried out temperature controlled general control procedure:
Be lower than t1 if detect Current Temperatures, then make the power supply of low-temperature sensitive device be in closed condition, thereby make Current Temperatures be lower than the low-temperature sensitive device can operate as normal temperature the time, the low-temperature sensitive device is not worked, thereby avoids this component failure or unusual;
Consider the temperature return difference, this temperature controlled control procedure can also for:
Be lower than t1 if detect temperature, make the power supply of low-temperature sensitive device be in closed condition, along with temperature rises, when Current Temperatures reaches t1, for fear of near the power supply of this temperature spot t1, opening or closing the low-temperature sensitive device repeatedly, still make the power supply of low-temperature sensitive device be in closed condition, when treating that temperature continues to rise to described time stagnant temperature t 2, open the power supply of low-temperature sensitive device; If Current Temperatures is in temperature-fall period, then the control of the power supply of low-temperature sensitive device is consistent with aforesaid general control procedure, thereby makes that the power supply of low-temperature sensitive device is changed into closed condition by opening when temperature is reduced to t1; This shows,, can avoid near temperature spot t1, opening repeatedly or closing the power supply of low-temperature sensitive device by adopting back stagnant temperature t 2;
As shown in Figure 4, solid line is represented the level state of the power supply of low-temperature sensitive device, when temperature rises, the change curve of the power supply level state of low-temperature sensitive device is: A-＞B-＞C-＞D, when temperature descended, the change curve of the power supply level state of low-temperature sensitive device was: D '-＞C '-＞B '-＞A '.
For clarity sake, in the process flow diagram mode control flow to low-temperature sensitive device power supply is described in the present embodiment more below.As shown in Figure 5, concrete steps are:
The power supply of step 503, control low-temperature sensitive device makes it be in closed condition, and execution in step 506 then;
The power supply of step 504, control low-temperature sensitive device makes it be in opening;
Whether step 506, judgment device cut off the power supply, and promptly whether general supply closes, if judged result is for being, and process ends then; Otherwise, return execution in step 502.
More than be in this method to the control of the power supply of low-temperature sensitive device, describe with regard to the control to well heater in this method more below.
Set in advance the control thresholding temperature t 4 of well heater and time stagnant temperature return difference Δ t2 of t4, utilize this temperature return difference, realize time stagnant temperature t 3=t4-Δ t2 of the control threshold temperature of well heater; Similar with the thresholding to the power supply of low-temperature sensitive device, the purpose of carrying out the design of said temperature return difference is: prevent temperature when thresholding changes up and down, frequent opening and closing well heater.
System temperature is detected, and according to the temperature control thresholding of result who detects and setting, it is as follows that well heater is carried out temperature controlled general control procedure:
Be lower than t4 if detect Current Temperatures, make well heater be in opening, thereby make temperature can heat system when low; Be higher than t4 if detect Current Temperatures, make well heater be in closed condition, make Current Temperatures no longer owing to the heating of well heater raises;
Consider the temperature return difference, this temperature controlled control procedure can also for:
Be higher than t4 if detect temperature, make well heater be in closed condition, along with temperature descends, when Current Temperatures reaches t4, for fear of near this temperature spot t4, opening or close well heater repeatedly, still make well heater be in closed condition, when treating that temperature continues to drop to described time stagnant temperature t 3, heater; If Current Temperatures is in temperature-rise period, then consistent with aforesaid general control procedure to the control of well heater, thus make that well heater is changed into closed condition by opening when temperature rises to t4; This shows,, can avoid near temperature spot t4, opening repeatedly or closing well heater by adopting back stagnant temperature t 3.
As shown in Figure 4, when temperature rose, the change curve of well heater level state was: E-＞F-＞G-＞H, and when temperature descended, the change curve of power level state was: H '-＞G '-＞F '-＞E '.
For clarity sake, in the process flow diagram mode control flow to well heater is described in the present embodiment more below.As shown in Figure 6, concrete steps are:
Step 601, device power, the equipment here are meant the general supply unlatching of entire equipment;
Step 602, system temperature is detected, if when system temperature is lower than t4, execution in step 603; Otherwise, execution in step 604;
Step 603, control heater make it be in opening, and execution in step 606 then;
Step 604, control heater make it be in closed condition;
Step 605, when detecting system temperature and reach t3 or be lower than t3, heater, execution in step 606 then;
Whether step 606, judgment device cut off the power supply, and promptly whether general supply closes, if judged result is for being, and process ends then; Otherwise, return execution in step 602.
Wherein, in the present invention, the temperature of the above t1 and t4 is chosen scope and is set according to the low temperature range that the low-temperature sensitive device in the equipment can operate as normal, generally, the minimum temperature that is set at the work of assurance low-temperature sensitive device of t1, t4 is higher 5～30 ℃ than t1; Temperature return difference Δ t1 can be identical with Δ t2, also can be different, and the scope of choosing is: Δ t1 〉=2 ℃; Δ t2 〉=2 ℃.
In specific embodiment two, the power supply of low-temperature sensitive device and the power supply of well heater to be controlled respectively, following specific embodiment three is the temperature-controlled process of the power supply of while control heater and low-temperature sensitive device.
Specific embodiment three is a kind of temperature-controlled process, and this method is applied to exist in the equipment of low-temperature sensitive device, and the power supply of well heater in the equipment and low-temperature sensitive device is controlled.
Specify control below to the power supply control of well heater and low-temperature sensitive device.
Set in advance the control thresholding temperature t 1 of power supply of low-temperature sensitive device and the control thresholding temperature t 4 of well heater, time stagnant temperature return difference Δ t1 of the control thresholding temperature t 1 of low-temperature sensitive device power supply is set, and time stagnant temperature return difference Δ t2 of well heater control thresholding temperature t 4, utilize the above temperature return difference, time stagnant temperature t 2=t1+ Δ t1 of the power supply control threshold temperature of low-temperature sensitive device; Time stagnant temperature t 3=t4-Δ t2 of well heater control threshold temperature; Wherein, the purpose of carrying out said temperature return difference design is: prevent temperature when thresholding changes up and down, the frequent opening and closing well heater or the power supply of low-temperature sensitive device.The concrete setting as shown in Figure 4, wherein transverse axis is represented temperature, the longitudinal axis is represented level state, i.e. on off state, high level is for opening, and low level is for closing.
Wherein, in the present invention, the temperature of the above t1 and t4 is chosen scope and is set according to the low temperature range that the low-temperature sensitive device in the equipment can operate as normal, generally, the minimum temperature that is set at the work of assurance low-temperature sensitive device of t1, t4 is higher 5～30 ℃ than t1; Temperature return difference Δ t1 can be identical with Δ t2, also can be different, and the scope of choosing is: Δ t1 〉=2 ℃; Δ t2 〉=2 ℃.
System temperature is detected, and according to the temperature control thresholding of result who detects and setting, the power supply well heater of low-temperature sensitive device is controlled, and temperature controlled general control procedure is as follows:
Be lower than t1 if detect Current Temperatures, then make the power supply of low-temperature sensitive device be in closed condition, make well heater be in opening, thereby make Current Temperatures be lower than the low-temperature sensitive device can operate as normal temperature the time, one side is the rising Current Temperatures by the heating of well heater, make the low-temperature sensitive device not work on the other hand, thereby avoid this component failure or unusual; Be higher than t4 if detect Current Temperatures, make well heater be in closed condition, make Current Temperatures no longer owing to the heating of well heater raises;
Consider the temperature return difference, this temperature controlled control procedure can also for:
Be lower than t1 if detect temperature, make the power supply of low-temperature sensitive device be in closed condition, along with temperature rises, when Current Temperatures reaches t1, for fear of near the power supply of this temperature spot t1, opening or closing the low-temperature sensitive device repeatedly, still make the power supply of low-temperature sensitive device be in closed condition, when treating that temperature continues to rise to described time stagnant temperature t 2, open the power supply of low-temperature sensitive device; If Current Temperatures is in temperature-fall period, then the control of the power supply of low-temperature sensitive device is consistent with aforesaid general control procedure, thereby makes that the power supply of low-temperature sensitive device is changed into closed condition by opening when temperature is reduced to t1; This shows,, can avoid near temperature spot t1, opening repeatedly or closing the power supply of low-temperature sensitive device by adopting back stagnant temperature t 2;
Be higher than t4 if detect temperature, make well heater be in closed condition, along with temperature descends, when Current Temperatures reaches t4, for fear of near this temperature spot t4, opening or close well heater repeatedly, still make well heater be in closed condition, when treating that temperature continues to drop to described time stagnant temperature t 3, heater; If Current Temperatures is in temperature-rise period, then consistent with aforesaid general control procedure to the control of well heater, thus make that well heater is changed into closed condition by opening when temperature rises to t4; This shows,, can avoid near temperature spot t4, opening repeatedly or closing well heater by adopting back stagnant temperature t 3.
As shown in Figure 4, when temperature rose, the change curve of the power supply level state of low-temperature sensitive device was: A-＞B-＞C-＞D, and when temperature descended, the change curve of the power supply level state of low-temperature sensitive device was: D '-＞C '-＞B '-＞A '; When temperature rose, the change curve of well heater level state was: E-＞F-＞G-＞H, and when temperature descended, the change curve of well heater level state was: H '-＞G '-＞F '-＞E '.
The flow process that present embodiment is controlled the power supply of well heater and low-temperature sensitive device as shown in Figure 7, concrete steps are:
Step 701, device power, the device power here are meant that the equipment general supply powers on;
Step 702, detection system temperature T, if T 〉=t4, then execution in step 703; If t2≤T＜t4, then execution in step 708; If T＜t2, then execution in step 712;
Step 703, control heater make it be in closed condition, and the power supply of control low-temperature sensitive device makes it be in opening;
Whether step 704, judgment device cut off the power supply, if device powers down, process ends, otherwise execution in step 705;
Step 705, when detecting that system temperature T reaches or when being lower than t3, heater; Before temperature reached t3, the state of the power supply of maintenance well heater and low-temperature sensitive device was constant;
Whether step 706, judgment device cut off the power supply, if device powers down, process ends, otherwise execution in step 707;
Step 707, detection system temperature T are if T 〉=t4 returns execution in step 703; If T≤t1, execution in step 711; Before temperature reaches t4 or reaches t1, keep the power supply state of well heater and low-temperature sensitive device constant;
Step 708, control heater make it be in opening; The power supply of control low-temperature sensitive device makes it be in opening;
Whether step 709, judgment device cut off the power supply, if device powers down, process ends, otherwise execution in step 710;
Step 710, detection system temperature T are if T 〉=t4 returns execution in step 703; If T≤t1, execution in step 711; Before temperature reaches t4 or reaches t1, keep the power supply state of well heater and low-temperature sensitive device constant;
The power supply of step 711, control low-temperature sensitive device makes it be in closed condition, keeps the opening of well heater, and execution in step 713 then;
Step 712, control heater make it be in opening, and the power supply of control low-temperature sensitive device makes it be in closed condition, and execution in step 713 then;
Whether step 713, judgment device cut off the power supply, if device powers down, process ends, otherwise execution in step 702.
More than be specific embodiments of the invention, in concrete implementation process, can carry out suitable improvement, to adapt to the concrete needs of concrete condition the method according to this invention.Therefore be appreciated that according to the specific embodiment of the present invention just to play an exemplary role, not in order to restriction protection scope of the present invention.
Claims (16)
1, a kind of low-temperature sensitive device temperature control system, comprising: power module is used to system that power supply is provided; Temperature detection and control module are used for temperature is detected, and control first switch module according to testing result; First switch module is used for the opening and closing of control heater; Well heater is used to low-temperature sensitive equipment to heat up; It is characterized in that this temperature control system also comprises:
The power supply of low-temperature sensitive device is used to the low-temperature sensitive device that power supply is provided;
The second switch module is used for controlling according to the temperature detection result of temperature detection and control module the opening and closing of the power supply of low-temperature sensitive device;
In described temperature detection and control module, be provided with the first control threshold temperature, this first control threshold temperature is corresponding to the minimum temperature of low-temperature sensitive device operate as normal, if detecting Current Temperatures, temperature detection and control module be lower than this first control threshold temperature, then make well heater be in opening, and make the power supply of low-temperature sensitive device be in closed condition by control second switch module by controlling first switch module; Be higher than this first control threshold temperature if temperature detection and control module detect Current Temperatures, then make the power supply of low-temperature sensitive device be in opening by control second switch module.
2, system according to claim 1, it is characterized in that, further be provided with the second control threshold temperature in described temperature detection and the control module, this second control threshold temperature is higher than the first control threshold temperature, and be lower than the maximum temperature of assurance equipment operate as normal, be higher than this second control threshold temperature if temperature detection and control module detect Current Temperatures, then make well heater be in closed condition by controlling first switch module.
3, system according to claim 1 is characterized in that, described temperature detection and control module are temperature sensing controller.
4, system according to claim 1 is characterized in that, described switch module is a transistor.
5, system according to claim 1 is characterized in that, described switch module is a low power relay.
6, a kind of low-temperature sensitive device temperature control method is characterized in that the method comprising the steps of:
A, temperature is detected, be lower than the first control threshold temperature if detect Current Temperatures, control heater makes it be in opening, and the power supply of control low-temperature sensitive device makes it be in closed condition.
7, method as claimed in claim 6 is characterized in that, described steps A further comprises: be higher than the first control threshold temperature if detect Current Temperatures, the power supply of control low-temperature sensitive device makes it be in opening.
8, method according to claim 6 is characterized in that, before described steps A, further comprises:
The first control threshold temperature is set, and this first control threshold temperature is corresponding to the minimum temperature of low-temperature sensitive device operate as normal.
9, method according to claim 6, it is characterized in that, before the described steps A, further comprise: the power supply that the low-temperature sensitive device is set is opened back stagnant temperature, the power supply of this low-temperature sensitive device is opened back stagnant temperature and is higher than the first control threshold temperature, and then described steps A further comprises:
Open back stagnant temperature if detect the power supply that Current Temperatures is higher than the low-temperature sensitive device, the power supply of control low-temperature sensitive device makes it be in opening; If the power supply of low-temperature sensitive device was opening originally, be lower than first control during threshold temperature when detecting Current Temperatures, close the power supply of low-temperature sensitive device.
10, method according to claim 9 is characterized in that, described steps A further comprises:
Equal the first control threshold temperature if detect Current Temperatures, make the power supply of low-temperature sensitive device be in closed condition; Open back stagnant temperature if detect the power supply that Current Temperatures equals the low-temperature sensitive device, make the power supply of low-temperature sensitive device be in opening.
11, method according to claim 9 is characterized in that, the power supply of described low-temperature sensitive device is opened back stagnant temperature and is higher than at least 2 degrees centigrade of the first control threshold temperatures.
12, according to the described method of arbitrary claim in the claim 6 to 11, it is characterized in that, further comprise before the described steps A: the second control threshold temperature is set, and this second control threshold temperature is higher than the first control threshold temperature, and is lower than the maximum temperature of assurance equipment operate as normal; Then described steps A further comprises:
Temperature is detected, be higher than the second control threshold temperature, make well heater be in closed condition if detect Current Temperatures.
13, method according to claim 12 is characterized in that, further comprises before the described steps A: well heater is set opens back stagnant temperature, this well heater is opened back stagnant temperature and is lower than the second control threshold temperature; Then described steps A further comprises:
If the well heater previous status is a closed condition, when detecting Current Temperatures and be lower than well heater and open back stagnant temperature, heater.
14, method according to claim 13 is characterized in that, described steps A further comprises: equal the second control threshold temperature if detect Current Temperatures, close well heater; If detecting Current Temperatures equals well heater and opens back stagnant temperature, heater.
15, method according to claim 13 is characterized in that, the described second control gate limit for height is opened back at least 2 degrees centigrade of stagnant temperature in well heater.
16, method according to claim 13 is characterized in that, the described first control threshold temperature is the minimum temperature of the low-temperature sensitive device operate as normal in the equipment, and the second control threshold temperature is higher than 5 to 30 degrees centigrade of the first control threshold temperatures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410058255XA CN100489722C (en) | 2004-08-20 | 2004-08-20 | Temperature control system and control method for low-temperature sensitive equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410058255XA CN100489722C (en) | 2004-08-20 | 2004-08-20 | Temperature control system and control method for low-temperature sensitive equipment |
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| CN1737720A true CN1737720A (en) | 2006-02-22 |
| CN100489722C CN100489722C (en) | 2009-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200410058255XA Expired - Fee Related CN100489722C (en) | 2004-08-20 | 2004-08-20 | Temperature control system and control method for low-temperature sensitive equipment |
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| CN (1) | CN100489722C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169353A (en) * | 2010-02-26 | 2011-08-31 | 扬光绿能股份有限公司 | Electronic device and control method thereof |
| CN102591382A (en) * | 2012-03-14 | 2012-07-18 | 中兴通讯股份有限公司 | Temperature control device, method and electronic equipment |
| CN104597942A (en) * | 2013-10-31 | 2015-05-06 | 鸿富锦精密工业（深圳）有限公司 | Temperature control circuit |
| CN109358672A (en) * | 2018-09-28 | 2019-02-19 | 厦门科华恒盛股份有限公司 | A kind of low-temperature heating system, header box and photovoltaic generating system |
| CN109375675A (en) * | 2018-12-18 | 2019-02-22 | 国网西藏电力有限公司 | A kind of constant temperature controller helping field equipment in arctic operation |
| CN110445007A (en) * | 2019-07-10 | 2019-11-12 | 深圳市迅特通信技术有限公司 | The method and device of laser dense wave division multipurpose wavelength stabilization control |
| CN110708821A (en) * | 2019-09-02 | 2020-01-17 | 深圳市崧盛电子股份有限公司 | Driving circuit and method capable of starting power supply in extremely low temperature environment and power supply |
| CN111007901A (en) * | 2019-12-24 | 2020-04-14 | 成都国翼电子技术有限公司 | Wide-range temperature closed-loop control circuit |
-
2004
- 2004-08-20 CN CNB200410058255XA patent/CN100489722C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169353A (en) * | 2010-02-26 | 2011-08-31 | 扬光绿能股份有限公司 | Electronic device and control method thereof |
| CN102591382A (en) * | 2012-03-14 | 2012-07-18 | 中兴通讯股份有限公司 | Temperature control device, method and electronic equipment |
| CN102591382B (en) * | 2012-03-14 | 2018-02-27 | 中兴通讯股份有限公司 | Temperature control equipment, method and electronic equipment |
| CN104597942A (en) * | 2013-10-31 | 2015-05-06 | 鸿富锦精密工业（深圳）有限公司 | Temperature control circuit |
| CN109358672A (en) * | 2018-09-28 | 2019-02-19 | 厦门科华恒盛股份有限公司 | A kind of low-temperature heating system, header box and photovoltaic generating system |
| CN109375675A (en) * | 2018-12-18 | 2019-02-22 | 国网西藏电力有限公司 | A kind of constant temperature controller helping field equipment in arctic operation |
| CN110445007A (en) * | 2019-07-10 | 2019-11-12 | 深圳市迅特通信技术有限公司 | The method and device of laser dense wave division multipurpose wavelength stabilization control |
| CN110445007B (en) * | 2019-07-10 | 2020-06-02 | 深圳市迅特通信技术有限公司 | Method and device for stable wavelength control of laser dense wavelength division multiplexing |
| CN110708821A (en) * | 2019-09-02 | 2020-01-17 | 深圳市崧盛电子股份有限公司 | Driving circuit and method capable of starting power supply in extremely low temperature environment and power supply |
| CN111007901A (en) * | 2019-12-24 | 2020-04-14 | 成都国翼电子技术有限公司 | Wide-range temperature closed-loop control circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100489722C (en) | 2009-05-20 |
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