CN103423508B - Control unit and control method for thermal electric regulating valve - Google Patents
Control unit and control method for thermal electric regulating valve Download PDFInfo
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- CN103423508B CN103423508B CN201210169367.7A CN201210169367A CN103423508B CN 103423508 B CN103423508 B CN 103423508B CN 201210169367 A CN201210169367 A CN 201210169367A CN 103423508 B CN103423508 B CN 103423508B
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Abstract
The invention relates to a control unit and a control method for a thermal electric regulating valve. The thermal electric regulating valve comprises a water inlet and a water outlet. The control unit comprises a processing unit, an output module, an input module and a power module, wherein the output module, the input module and the power module are connected with the processing unit. The processing unit is used for acquiring water inlet temperature and water outlet temperature according to a water inlet temperature signal and a water outlet temperature signal, comparing a temperature difference between the water inlet temperature and the water outlet temperature to a set temperature difference so as to obtain comparison results, generating a control signal when the obtained comparison results meet a preset condition, and sending the control signal to the output module. The preset condition refers to the fact that the comparison results obtained in a preset time are the same. The output module is used for regulating valve opening according to the control signal. The control unit and the control method have the advantages that hydraulic unbalance in an air conditioner system is overcome with temperature difference, and the control unit is stable in performance, simple in structure and low in cost.
Description
Technical field
The present invention relates to air conditioning system manufacture field, more particularly to a kind of temperature difference motor regulated valve controller and its control
Method.
Background technology
Central air conditioner system has become in modern building indispensable facility, and central air conditioner system energy consumption generally compared with
Greatly, therefore energy-saving design is major trend.Guarantee the reliability of system operation and reach good temperature control effect, central air-conditioning
The hydraulic equilibrium control of system is key technology.For the unbalanced problem of the waterpower for solving system, need to arrange in systems
The balanced valve of various dynamics or static state.Various electromagnetism or electrically operated valve are installed in central air conditioner system, not only increase cost,
Increase the difficulty of system maintenance management.The drive control device part of electromagnetic valve or electrically operated valve, is the important of electrically operated valve
Part.
The content of the invention
Overcome asking for air conditioner water force unbalance using various electromagnetism or electrically operated valve is installed in order to solve prior art
Inscribe and the increase of caused cost, the problem of system maintenance management difficulty increase, the present invention provides a kind of temperature difference motor regulated valve
Controller and its control method.
In order to achieve the above object, the technical solution used in the present invention is：A kind of temperature difference motor regulated valve controller, temperature
Difference motor regulated valve includes water inlet and outlet, and temperature difference motor regulated valve controller includes processor, connects with processor
Output module, input module and the power module for connecing；
The input module, for providing the user input temperature difference setting value under the control of the processor, and will enter
Mouth of a river temperature signal and outlet temperature signal transmission are to the processor；
The processor, for obtaining water inlet temperature according to the water inlet temperature signal and the outlet temperature signal
Degree and outlet temperature, the temperature difference of the water inlet temperature and outlet temperature are compared with the temperature difference setting value and are obtained
Comparative result, when the comparative result of acquisition meets pre-conditioned after form control signal, and by the control signal send to
The output module, it is described it is pre-conditioned be in Preset Time obtain multiple described comparative result it is identical；
The output module, for according to the control signal controlling opening of valve；
The power module, is that processor, output module, input module are powered.
Further, the input module includes：Temperature sampling module and user input module, wherein,
The temperature sampling module is used to detect the temperature of the water inlet and outlet, so as to obtain water inlet temperature letter
Number and outlet temperature signal；
The temperature sampling module include it is being connected with processor or user input module, for gathering the water inlet temperature
First temperature sensor of degree signal and the second temperature sensor for gathering the outlet temperature signal；
The user input module, for providing the user input temperature difference setting value under the control of the processor.
Further, the temperature sampling module also includes multiplexer,
First temperature sensor and the second temperature sensor are by the multiplexer and the process
Device connects.
Further, the temperature sampling module also includes：
Constant-current source circuit, its input is connected with the processor, and outfan is connected with the multiplexer, the constant current
The constant current source signal of source circuit output detects the water inlet as first temperature sensor, the second temperature sensor
The sampled reference of temperature, the outlet temperature；
Amplifying circuit, its input is connected with the multiplexer, and outfan is connected with the processor, for by institute
State after water inlet temperature signal, the outlet temperature signal amplify and transmit to the processor.
Further, the output module includes valve regulated module, and the valve regulated module is included for controlling valve
The first control module and the second control module for control valve closing that door is opened.
Further, first control module is identical with the structure of second control module, wherein,
First control module includes audion and relay,
The base stage of the audion is connected with the I/O mouths of the processor, and colelctor electrode is connected with the negative terminal of the relay,
Grounded emitter, the anode of the relay is connected with the power module.
Further, the valve regulated module also include for change the processor I/O mouths level and avoid
The optical coupling isolation circuit of interference, the input of the optical coupling isolation circuit is connected with the processor, outfan respectively with it is described
First control module and second control module connect.
Further, the user input module includes first be connected in parallel on an I/O mouth of the processor
Button, the second button and the 3rd button, first button, second button, the 3rd button connect respectively an electricity
Resistance, and the resistance value of the resistance is different.
Further, the output module also includes the display module being connected with the processor and the power module,
Temperature difference setting value and control for showing water inlet temperature and outlet temperature, being set by the key-press module is described
Temperature sampling module gathers the interval time of water inlet temperature signal and outlet temperature signal.
The present invention also provides a kind of control method of above-mentioned temperature difference motor regulated valve controller, comprises the following steps：
Step 1：The temperature sampling module detects the water inlet temperature, outlet temperature, obtains water inlet temperature letter
Number and outlet temperature signal；
Step 2：The processor obtains water inlet according to the water inlet temperature signal and the outlet temperature signal
Temperature and outlet temperature, by the temperature difference of the water inlet temperature and outlet temperature and user by the user input mould
First temperature difference setting value of block input is compared acquisition comparative result, judges whether Sohu of Soviet Union comparative result meets default bar
Part, if meet pre-conditioned, and the multiple described temperature difference obtained in Preset Time is all higher than first temperature difference setting value, it is raw
Into the first control signal of increase valve opening, if to be respectively less than described second warm for the multiple described temperature difference obtained in Preset Time
Difference setting value, generates the second control signal for reducing valve opening, described default if being unsatisfactory for pre-conditioned, return to step 1
Condition is that the multiple described comparative result obtained in Preset Time is identical；
Step 3：The valve regulated module is according to first control signal or the second control signal controlling opening of valve.
Further, also include before the step 2, step 20：Judge that the temperature difference sets with first temperature difference
Whether the absolute value of the difference of value is more than preset value, the step 2 is if so, then entered, if it is not, then return to step 1；
Accordingly the step 3 is：The valve regulated module is according to first control signal or the second control signal
Controlling opening of valve, until the temperature difference is less than preset value with the absolute value of the difference of first temperature difference setting value.
Further, it is further comprising the steps of before the step 20：
Step 21：The processor is defeated by user with user by the temperature difference of the water inlet temperature and outlet temperature
The second temperature difference setting value for entering module input is compared, if the temperature difference is more than second temperature difference setting value, generates and lacks
4th control signal of water conservation, if the temperature difference performs the step 20 less than second temperature difference setting value.
Further, it is further comprising the steps of before the step 1：
Step 101：Judge whether the signal for receiving valve startup, if so, valve is opened to initialization aperture, if
It is no, then the processor first temperature difference setting value that again receive user is input into by the user input module；
Step 102：Judge whether the signal for receiving valve closing, if so, by valve closing and return to step 1, if it is not,
Then execution step 103；
Step 103：Judge whether the temperature sampling interval time for reaching setting, if so, then execution step 1, return if not
Step 102.
Further, the first temperature difference setting value of the setting is identical with the concrete steps of the second temperature difference setting value of setting, institute
State concretely comprising the following steps for the first temperature difference setting value of setting：
Step 11：First button is pressed, the processor forms the signal of the temperature approach for preparing to receive setting；
Step 12：The second button or the 3rd button are pressed, first temperature difference setting value is adjusted up or adjusts downwards；
Step 13：The first button is pressed, setting temperature approach terminates.
The invention has the beneficial effects as follows：Temperature difference electric valve controller of the present invention is adjusted according to the temperature difference of water inlet, outlet
Section valve opening, and then water inlet, the flow of outlet are controlled, overcome the unbalanced problem of air conditioning system waterpower using the temperature difference,
And temperature difference electrically operated valve controller performance of the present invention is stable, simple structure, low cost.
Description of the drawings
Fig. 1 represents temperature difference motor regulated valve controller architecture block diagram of the present invention；
Fig. 2 represents the structured flowchart of temperature difference motor regulated valve controller of the present invention；
Fig. 3 represents the temperature difference motor regulated valve controller circuit structure schematic diagram of the embodiment of the present invention 1；
Fig. 4 represents the temperature difference motor regulated valve controller circuit structure schematic diagram of the embodiment of the present invention 2；
Fig. 5 represents the temperature difference motor regulated valve controller circuit structure schematic diagram of the embodiment of the present invention 3；
Fig. 6 represents the temperature difference motor regulated valve controller circuit structure schematic diagram of the embodiment of the present invention 4；
Fig. 7 represents the control method flow chart of temperature difference motor regulated valve controller of the present invention；
Fig. 8 represents the control method flow chart of temperature difference motor regulated valve controller of the present invention.
Specific embodiment
Present configuration and principle are described in detail below in conjunction with accompanying drawing, illustrated embodiment is only used for explaining this
It is bright, not protection scope of the present invention is limited with this.
As shown in figure 1, a kind of temperature difference motor regulated valve controller, temperature difference motor regulated valve includes water inlet and water outlet
Mouthful, temperature difference motor regulated valve controller includes processor, the output module being connected with processor, input module and power supply mould
Block；
The input module, for providing the user input temperature difference setting value under the control of the processor, and will enter
Mouth of a river temperature signal and outlet temperature signal transmission are to the processor；
The processor, for obtaining water inlet temperature according to the water inlet temperature signal and the outlet temperature signal
Degree and outlet temperature, the temperature difference of the water inlet temperature and outlet temperature are compared with the temperature difference setting value and are obtained
Comparative result, when the comparative result of acquisition meets pre-conditioned after form control signal, and by the control signal send to
The output module, it is described it is pre-conditioned be in Preset Time obtain multiple described comparative result it is identical；
The output module, for according to the control signal controlling opening of valve；
The power module, is that processor, output module, input module are powered.
The input module detection valve water inlet temperature and outlet temperature, the processor is according to water inlet and water outlet
The temperature difference of mouth forms the signal of control valve aperture, and the output module is according to the control signal controlling opening of valve.Pass through
Temperature difference motor regulated valve controller of the present invention, can overcome the unbalanced problem of air conditioning system waterpower, and low cost, control letter
It is single.
In the present embodiment, the processor adopts the reset circuit of Micro-processor MCV, MCU to have been integrated with inside new product,
External circuit need not reset, cost-effective.
As shown in Fig. 2 the input module includes：Temperature sampling module 6 and user input module 4, wherein,
The temperature sampling module 6 is used to detect the temperature of the water inlet and outlet, so as to obtain water inlet temperature
Signal and outlet temperature signal；
The temperature sampling module 6 include it is being connected with processor 1 or user input module 4, for gathering the water inlet
First temperature sensor of mouth temperature signal and the second temperature sensor for gathering the outlet temperature signal；
The water inlet temperature signal and outlet temperature signal can be directly transferred to processor 1 can also pass through user
Input module is transmitted to processor 1.
The user input module, for providing the user input temperature difference setting value under the control of the processor.
The temperature sampling module 6 include it is being connected with processor 1, for gather the water inlet temperature signal first
Temperature sensor and the second temperature sensor for gathering the outlet temperature signal.
First temperature sensor and the second temperature sensor directly can be connected with the processor 1, in order to
Saving pin that the temperature sampling module is connected with the processor 1 can also be by multiplexer and the processor 1
Connection.
The temperature sampling module 6 also includes multiplexer,
First temperature sensor and the second temperature sensor are by the multiplexer and the process
Device connects.
Selection control is carried out to first temperature sensor and the second temperature sensor using the multiplexer
System, saves the pin that the temperature sampling module is connected with the processor 1, cost-effective.
First temperature sensor and the second temperature sensor can pass through the multiplexer directly and institute
State processor 1 to connect, in order that the water inlet temperature and outlet temperature precision that obtain are higher, the multiplexer and institute
State and can also connect between processor constant-current source circuit and amplifying circuit.
The temperature sampling module 6 also includes：
Constant-current source circuit, its input is connected with the processor 1, and outfan is connected with the multiplexer, the perseverance
The constant current source signal of current source circuit output gathers the water inlet as first temperature sensor, the second temperature sensor
Mouth temperature signal, the sampled reference of the outlet temperature signal；
Amplifying circuit, its input is connected with the multiplexer, and outfan is connected with the processor 1, for inciting somebody to action
The water inlet temperature signal, the outlet temperature signal are transmitted to the processor 1 after amplifying.
Constant-current source is selected as first temperature sensor and the sampled reference of the second temperature sensor so that institute
State temperature sampling module and collect stable water inlet temperature signal and outlet temperature signal, so as to the water inlet temperature for detecting
Degree and outlet temperature are more accurate.
The output module includes valve regulated module, and the valve regulated module 5 includes what is opened for control valve
First control module and the second control module closed for control valve.
First control module is identical with the structure of second control module, wherein,
First control module includes audion and relay,
The base stage of the audion is connected with the I/O mouths of the processor, and colelctor electrode is connected with the negative terminal of the relay,
Grounded emitter, the anode of the relay is connected with the power module.
Using the low cost of valve regulated module 5 of said structure form.When the processor（MCU）I/O mouths to high electricity
At ordinary times, triode ON, relay adhesive performs valve and opens or closes action；When the I/O port of MCU is to low level, three poles
Pipe ends, and relay disconnects, and does not perform action.
Can also be the triode ON when the I/O low levels of MCU, relay adhesive, execution valve opens or closes dynamic
Make；When the I/O port of MCU is to high level, audion cut-off, relay disconnects, and does not perform action.
First control module and second control module directly can be connected with the processor 1, in order to avoid
Interference, between first control module and second control module and the processor 1 optical coupling isolation circuit can be arranged.
The valve regulated module 5 also includes the level for changing the I/O mouths of the processor 1 and the light for avoiding interference
Coupling isolation circuit, the input of the optical coupling isolation circuit is connected with the processor, and outfan is controlled respectively with described first
Module and second control module connect.
The optical coupling isolation circuit can realize level conversion, isolation input output circuit, avoid interference.
The user input module 4 include being connected in parallel the first button on an I/O mouth of the processor, second
Button and the 3rd button, first button, second button, the 3rd button connect respectively a resistance, and described
The resistance value of resistance is different.
First button, the second button and the 3rd button use an AD thief hatch of MCU processors 1, using sampling
The mode of voltage realizes control of the pin to three buttons, can save the pin resource of MCU, facilitates later function to expand
Exhibition.The resistance value of first button, the second button and the 3rd key configurations will have a certain distance, and and pull-up resistance values
Can not differ from too greatly, obtain correct resistance matching.
When being embodied as, as shown in Fig. 3, Fig. 4 and Fig. 5, when the button for pressing resistance R1（First button）, MCU adopted to one
Individual magnitude of voltage V1, MCU send signal, prepare to receive the signal for raising or lowering temperature approach；If then press resistance value R2 by
Key（Second button）, MCU samples a magnitude of voltage V2, and the temperature approach of setting will raise certain number of degrees, the temperature difference is pressed again
Value can again raise the identical number of degrees, until being above adjusted to the temperature approach for needing, can press the button of R1（First button）It is determined that；If
It is the button for pressing resistance value R3（3rd button）, MCU samples magnitude of voltage V3, and the temperature approach of setting can lower certain number of degrees,
Pressing temperature approach again can again lower the identical number of degrees until being adjusted downward to the temperature approach of needs, can press the button of R1（First
Button）It is determined that.If need to adjust temperature approach next time, by above-mentioned button flow process temperature difference setting value is changed.
The user input module 4 can also be button form, it would however also be possible to employ touch-screen form.
In the present embodiment, the output module also includes the display mould being connected with the processor 1 and the power module 2
Block 3, for the temperature difference setting value that shows water inlet temperature and outlet temperature, set by the key-press module and control
The interval time of the collection water inlet temperature signal of temperature sampling module 6 and outlet temperature signal.
Display module described in the present embodiment adopts LCD liquid crystal displays.
Several versions of the temperature difference motor regulated valve controller are described below.
Embodiment 1：As shown in Figure 1, Figure 2 and Figure 3, temperature difference motor regulated valve includes water inlet and outlet, thermoelectric
Dynamic control valve controller includes processor 1, and the temperature sampling module 6 being connected with processor 1, valve regulated module 5, user are defeated
Enter module 4 and power module 2, the power module 2 is defeated with the temperature sampling module 6, valve regulated module 5 and user respectively
Enter module 4 to connect；
The temperature sampling module 6, for gathering the water inlet temperature signal and the outlet temperature signal, and will
Described its is transmitted to the processor 1；
The user input module 4, for providing the user input temperature difference setting value under the control of the processor 1；
The processor 1, for obtaining water inlet according to the water inlet temperature signal and the outlet temperature signal
Temperature and outlet temperature, the temperature difference of the water inlet temperature and outlet temperature is compared with the temperature difference setting value
After form control signal, and the control signal is sent to the valve regulated module 5；
The valve regulated module 5, for according to the control signal controlling opening of valve；
The power module 2, is that processor 1, temperature sampling module 6, valve regulated module 5, user input module 4 are supplied
Electricity.
The temperature sampling module 6 include it is being connected with processor 1, for gather the water inlet temperature signal first
Temperature sensor and the second temperature sensor for gathering the outlet temperature signal.
The valve regulated module 5 includes the first control module opened for control valve and for control valve closing
The second control module.
First control module is identical with the structure of second control module, wherein,
First control module includes audion and relay,
The base stage of the audion is connected with the I/O mouths of the processor, and colelctor electrode is connected with the negative terminal of the relay,
Grounded emitter, the anode of the relay is connected with the power module.
The user input module 4 include being connected in parallel the first button on an I/O mouth of the processor, second
Button and the 3rd button, first button, second button, the 3rd button connect respectively a resistance, and described
The resistance value of resistance is different.
The temperature difference motor regulated valve controller also includes the display being connected with the processor and the power module
Module 3, for the temperature difference setting value that shows water inlet temperature and outlet temperature, set by the key-press module and control
Make the interval time of the temperature sampling module collection water inlet temperature signal and outlet temperature signal.
Foregoing circuit simple structure, it is cost-effective.
Embodiment 2, as shown in figure 4, the present embodiment temperature difference motor regulated valve controller is based on changing that embodiment 1 is made
Enter, wherein,
The valve regulated module also includes the level for changing the I/O mouths of the processor and the optocoupler for avoiding interference
Isolation circuit, the input of the optical coupling isolation circuit is connected with the processor, and outfan controls mould with described first respectively
Block and second control module connect.
The optical coupling isolation circuit can realize level conversion, isolation input output circuit, avoid interference.
Embodiment 3, as shown in figure 5, the present embodiment temperature difference motor regulated valve controller is based on changing that embodiment 2 is made
Enter, wherein,
The temperature sampling module also includes multiplexer,
First temperature sensor and the second temperature sensor are by the multiplexer and the process
Device connects.
Selection control is carried out to first temperature sensor and the second temperature sensor using the multiplexer
System, saves the pin that the temperature sampling module is connected with the processor, cost-effective.
The temperature sampling module also includes：
Constant-current source circuit, its input is connected with the processor, and outfan is connected with the multiplexer, the constant current
The constant current source signal of source circuit output gathers the water inlet as first temperature sensor, the second temperature sensor
The sampled reference of temperature signal, the outlet temperature signal；
Amplifying circuit, its input is connected with the multiplexer, and outfan is connected with the processor, for by institute
State after water inlet temperature signal, the outlet temperature signal amplify and transmit to the processor.
Constant-current source is selected as first temperature sensor and the sampled reference of the second temperature sensor so that institute
State temperature sampling module and collect stable water inlet temperature signal and outlet temperature signal, so as to the water inlet temperature for detecting
Degree and outlet temperature are more accurate.
Embodiment 4：As shown in fig. 6, the present embodiment is based on the improvements introduced of embodiment 1, wherein,
The temperature sampling module also includes multiplexer,
First temperature sensor and the second temperature sensor are by the multiplexer and the process
Device connects.
Selection control is carried out to first temperature sensor and the second temperature sensor using the multiplexer
System, saves the pin that the temperature sampling module is connected with the processor, cost-effective.
The temperature sampling module also includes：
Constant-current source circuit, its input is connected with the processor, and outfan is connected with the multiplexer, the constant current
The constant current source signal of source circuit output gathers the water inlet as first temperature sensor, the second temperature sensor
The sampled reference of temperature signal, the outlet temperature signal；
Amplifying circuit, its input is connected with the multiplexer, and outfan is connected with the processor, for by institute
State after water inlet temperature signal, the outlet temperature signal amplify and transmit to the processor.
Constant-current source is selected as first temperature sensor and the sampled reference of the second temperature sensor so that institute
State temperature sampling module and collect stable water inlet temperature signal and outlet temperature signal, so as to the water inlet temperature for detecting
Degree and outlet temperature are more accurate.
As shown in fig. 7, the present invention also provides a kind of control method of above-mentioned temperature difference motor regulated valve controller, including with
Lower step：
Step 1：The temperature sampling module collection water inlet temperature signal and outlet temperature signal；
Step 2：The processor obtains water inlet according to the water inlet temperature signal and the outlet temperature signal
Temperature and outlet temperature, by the temperature difference of the water inlet temperature and outlet temperature and user by the user input mould
First temperature difference setting value of block input is compared acquisition comparative result, judges whether the comparative result meets pre-conditioned,
If so, control signal is then formed, if it is not, then return to step 1, described pre-conditioned for multiple comparative results in Preset Time
It is identical；
If the result meet it is pre-conditioned if formed control signal be specially：If multiple temperature differences in Preset Time
First temperature difference setting value is all higher than, the first control signal of increase valve opening is generated, if multiple described in Preset Time
Temperature difference is respectively less than second temperature difference setting value, generates the second control signal for reducing valve opening；
Step 3：The valve regulated module is according to first control signal or the second control signal controlling opening of valve.
In the present embodiment, first temperature difference setting value is represented using T1 in the step 2,2.0 DEG C≤T1≤8.0 DEG C.
The Preset Time sets as needed, and all comparative results for only obtaining within the default time are：It is described
Temperature difference is all higher than first temperature difference setting value, or respectively less than described first temperature difference setting value, can just form corresponding control
Signal, the valve regulated module is according to corresponding control signal controlling opening of valve, it is to avoid valve event frequently, affects the longevity
Life.
Multiple described comparative result in the Preset Time, can be by continuously acquiring in the Preset Time
Multiple water inlet temperature signals and outlet temperature signal are obtained, or the multiple of acquisition that sample in the Preset Time
Water inlet temperature signal and outlet temperature signal are obtained.
Also include before the step 2, step 20：Judge the temperature difference with the difference of first temperature difference setting value
Whether absolute value is more than preset value, the step 2 is if so, then entered, if it is not, then return to step 1；
On the premise of the step 20 and step 2, the step 3 is：The valve regulated module is according to described first
Control signal or the second control signal controlling opening of valve, until the temperature difference and the difference of first temperature difference setting value
Absolute value is less than preset value.
In one embodiment, the step 20 can also be：Judge the temperature difference with first temperature difference setting value
It is pre-conditioned whether the absolute value of difference meets, and the step 2 is if so, then entered, if it is not, then return to step 1；
It is described it is pre-conditioned be in Preset Time obtain multiple described absolute value be all higher than preset value.
Corresponding step 2 is then：By the temperature difference of the water inlet temperature and outlet temperature and user by the use
First temperature difference setting value of family input module input is compared, and such as the temperature difference is more than first temperature difference setting value, then
The first control signal of increase valve opening is generated, if the temperature difference is less than first temperature difference setting value, is generated and is reduced
Second control signal of valve opening.
Preset value described in the present embodiment is 0.5 degree, is of course not solely limited to this numerical value.
It is further comprising the steps of before the step 20：
Step 21：The processor is defeated by user with user by the temperature difference of the water inlet temperature and outlet temperature
The second temperature difference setting value for entering module input is compared, if the temperature difference is more than second temperature difference setting value, generates and lacks
4th control signal of water conservation, if the temperature difference performs the step 20 less than second temperature difference setting value.
In the present embodiment, second temperature difference setting value is represented using T2, T2 >=10 DEG C.
It is further comprising the steps of before the step 1：
Step 101：Judge whether the signal for receiving valve startup, if so, valve is opened to initialization aperture, if
It is no, then the processor first temperature difference setting value that again receive user is input into by the user input module；
Step 102：Judge whether the signal for receiving valve closing, if so, by valve closing and return to step 1, if it is not,
Then execution step 103；
Step 103：Judge whether the temperature sampling interval time for reaching setting, if so, then execution step 1, return if not
Step 102.
The specific implementation step of the control method of temperature difference motor regulated valve controller of the present invention as shown in figure 8,
Step S01：By first temperature difference of the user input module settings setting value；
Step S02：By second temperature difference of the user input module settings setting value；
Step S03：The processor judges whether the signal for receiving valve startup, if so, into step S04, if it is not,
Then return to step S01；
Step S04：The valve regulated module opens valve to initialization aperture；
Step S05：The processor judges whether the signal for receiving valve closing, if so, into step S06, if it is not,
Then execution step S07；
Step S06：The valve regulated module is by valve closing and return to step S01；
Step S07：The processor judges whether the temperature sampling interval time for reaching setting, if so, then execution step
S08, if not return to step S05；
Step S08：The temperature sampling module collection water inlet temperature signal and outlet temperature signal；
Step S09：The temperature difference of the water inlet temperature and outlet temperature and user are passed through user by the processor
Second temperature difference setting value of input module input is compared, if the temperature difference is more than second temperature difference setting value, enters
Step S10, if the temperature difference is less than second temperature difference setting value, execution step S11
Step S10：The processor generates the 4th control signal of excessive low water level protection；
Step S11：The processor is intake according to the water inlet temperature signal and the outlet temperature signal
Mouth temperature and outlet temperature, by the temperature difference of the water inlet temperature and outlet temperature and user by the user input
First temperature difference setting value of module input is compared acquisition comparative result, if the comparative result is unsatisfactory for pre-conditioned, returns
Step S05 is returned, if meeting pre-conditioned, i.e., the difference of multiple temperature differences and first temperature difference setting value in Preset Time
Absolute value be all higher than preset value（0.5 degree）When, into step S12；
Step S12：Judge that the temperature difference, whether more than first temperature difference setting value, if so, then enters step S13,
If it is not, then entering step S14；
Step S13：The valve regulated module increases opening for valve according to the first control signal that the processor is generated
Degree, until the temperature difference is less than 0.5 degree with the absolute value of the difference of first temperature difference setting value, return to step S05；
Step S14：The valve regulated module reduces valve opening according to the second control signal that the processor is generated,
Until the temperature difference is less than 0.5 degree with the absolute value of the difference of first temperature difference setting value, into step S05.
Step S15：The temperature difference is less than preset value with the absolute value of the difference of first temperature difference setting value（0.5 degree）
When, the processor generates the 3rd control signal for stopping controlling opening of valve, return to step S05.
The above is present pre-ferred embodiments, it is noted that to those skilled in the art, is not being taken off
Under the premise of principle of the present invention, some improvements and modifications can also be made, these improvements and modifications also should be regarded as the present invention
Protection domain.
Claims (14)
1. a kind of temperature difference motor regulated valve controller, temperature difference motor regulated valve includes water inlet and outlet, and its feature exists
In temperature difference motor regulated valve controller includes processor, the output module being connected with processor, input module and power supply mould
Block；
The input module, for providing the user input temperature difference setting value under the control of the processor, and by water inlet
Temperature signal and outlet temperature signal transmission are to the processor；
The processor, for according to the water inlet temperature signal and the outlet temperature signal obtain water inlet temperature and
Outlet temperature, the temperature difference of the water inlet temperature and outlet temperature is compared with the temperature difference setting value and is compared
Relatively result, when the comparative result of acquisition meets pre-conditioned after form control signal, and the control signal is sent to described
Output module, it is described it is pre-conditioned be in Preset Time obtain multiple described comparative result it is identical；
The output module, for according to the control signal controlling opening of valve；
The power module, is that processor, output module, input module are powered；
The input module includes temperature sampling module, and the temperature sampling module is used to detect the temperature of the water inlet and outlet
Degree, so as to obtain water inlet temperature signal and outlet temperature signal；
The temperature sampling module includes the first temperature sensor, second temperature sensor, the constant-current source electricity being connected with processor
Road, first temperature sensor is used to gather the water inlet temperature signal, and second temperature sensor is used to gather the water outlet
Mouth temperature signal, the constant current source signal of the constant-current source circuit output is used as first temperature sensor, the second temperature
Sensor detects the water inlet temperature, the sampled reference of the outlet temperature.
2. temperature difference motor regulated valve controller according to claim 1, it is characterised in that the input module includes using
Family input module, water inlet temperature signal and outlet that first temperature sensor, second temperature sensor are collected
Temperature signal is by the user input module transfer to the processor；
The user input module, for providing the user input temperature difference setting value under the control of the processor.
3. temperature difference motor regulated valve controller according to claim 2, it is characterised in that the temperature sampling module is also
Including multiplexer,
First temperature sensor and the second temperature sensor are connected by the multiplexer with the processor
Connect.
4. temperature difference motor regulated valve controller according to claim 3, it is characterised in that
The outfan of the constant-current source circuit is connected with the multiplexer；The temperature sampling module also includes amplifying electricity
Road, its input is connected with the multiplexer, outfan is connected with the processor, for the water inlet temperature to be believed
Number, the outlet temperature signal amplify after transmit to the processor.
5. the temperature difference motor regulated valve controller according to any one of Claims 1-4, it is characterised in that the output
Module includes valve regulated module, and the valve regulated module includes the first control module opened for control valve and is used for
The second control module that control valve is closed.
6. temperature difference motor regulated valve controller according to claim 5, it is characterised in that first control module and
The structure of second control module is identical, wherein,
First control module includes audion and relay,
The base stage of the audion is connected with the I/O mouths of the processor, and colelctor electrode is connected with the negative terminal of the relay, transmitting
Pole is grounded, and the anode of the relay is connected with the power module.
7. temperature difference motor regulated valve controller according to claim 5, it is characterised in that the valve regulated module is also
Including for changing the level and the optical coupling isolation circuit that avoids interference of the I/O mouths of the processor, the optical coupling isolation circuit
Input be connected with the processor, outfan is connected respectively with first control module and second control module.
8. temperature difference motor regulated valve controller according to claim 5, it is characterised in that the user input module bag
The first button, the second button and the 3rd button being connected in parallel on an I/O mouth of the processor is included, described first presses
Key, second button, the 3rd button connect respectively a resistance, and the resistance, described that first button is connected
The resistance value of the resistance that resistance that the second button is connected, the 3rd button are connected is different.
9. temperature difference motor regulated valve controller according to claim 5, it is characterised in that the output module also includes
The display module of connection, for showing water inlet temperature and outlet temperature, by the temperature difference of the user input module settings
The interval time of setting value and the control temperature sampling module collection water inlet temperature signal and outlet temperature signal.
10. a kind of control method of temperature difference motor regulated valve controller, it is characterised in that comprise the following steps：
Step 1：Temperature sampling module obtains water inlet temperature signal and outlet temperature signal, wherein the temperature sampling module
By constant-current source circuit as detection temperature signal sampled reference；
Step 20：What the temperature difference and user for judging the water inlet temperature and outlet temperature was input into by user input module
Whether the absolute value of the difference of the first temperature difference setting value is more than preset value, or, judge the water inlet temperature and outlet temperature
Whether the absolute value of the difference of the first temperature difference setting value that the temperature difference of degree is input into user by user input module meets pre-
If condition, it is described it is pre-conditioned be in Preset Time obtain multiple described absolute value be all higher than preset value, if so, then enter
The step 2, if it is not, then return to step 1；
Step 2：Processor obtains water inlet temperature and goes out according to the water inlet temperature signal and the outlet temperature signal
Mouth of a river temperature, first that the temperature difference of the water inlet temperature and outlet temperature and user are input into by user input module
Temperature difference setting value is compared acquisition comparative result, judges whether the comparative result for obtaining meets pre-conditioned, if meeting
It is pre-conditioned, and the multiple described temperature difference in Preset Time is all higher than first temperature difference setting value, generates increase valve
First control signal of aperture, if the multiple described temperature difference in Preset Time is respectively less than first temperature difference setting value, generates
Reduce valve opening the second control signal, if being unsatisfactory for pre-conditioned, return to step 1, it is described it is pre-conditioned for obtain
Multiple comparative results are identical；
Step 3：Valve regulated module is according to first control signal or the second control signal controlling opening of valve.
The control method of 11. temperature difference motor regulated valve controllers according to claim 10, it is characterised in that
Accordingly the step 3 is：The valve regulated module is adjusted according to first control signal or the second control signal
Valve opening, until the temperature difference is less than preset value with the absolute value of the difference of first temperature difference setting value.
The control method of 12. temperature difference motor regulated valve controllers according to claim 11, it is characterised in that the step
It is further comprising the steps of before rapid 20：
Step 21：The temperature difference of the water inlet temperature and outlet temperature and user are passed through user input mould by the processor
Second temperature difference setting value of block input is compared, if the temperature difference is more than second temperature difference setting value, generates hydropenia and protects
4th control signal of shield, if the temperature difference performs the step 20 less than second temperature difference setting value.
The control method of 13. temperature difference motor regulated valve controllers according to claim 12, it is characterised in that the step
It is further comprising the steps of before rapid 1：
Step 101：Judge whether the signal for receiving valve startup, if so, valve is opened to initialization aperture, if it is not, then
The processor first temperature difference setting value that again receive user is input into by the user input module；
Step 102：Judge whether the signal for receiving valve closing, if so, by valve closing and return to step 1, if it is not, then holding
Row step 103；
Step 103：Judge whether the temperature sampling interval time for reaching setting, if so, then execution step 1, if not return to step
102。
The control method of 14. temperature difference motor regulated valve controllers according to claim 12, it is characterised in that described to set
Fixed first temperature difference setting value is identical with the concrete steps of the second temperature difference setting value of setting, the tool of the first temperature difference setting value of the setting
Body step is：
Step 11：The first button is pressed, the processor forms the signal of the temperature approach for preparing to receive setting；
Step 12：The second button or the 3rd button are pressed, first temperature difference setting value is adjusted up or adjusts downwards；
Step 13：The first button is pressed, setting temperature approach terminates.
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| CN201210169367.7A CN103423508B (en) | 2012-05-24 | 2012-05-24 | Control unit and control method for thermal electric regulating valve |
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| CN109237753A (en) * | 2017-05-15 | 2019-01-18 | 郭建良 | Dynamic two temperature balance electric regulating valve |
| CN107300245B (en) * | 2017-08-15 | 2023-12-12 | 珠海格力电器股份有限公司 | Air conditioner controller and communication isolation method |
| CN109431252A (en) * | 2018-10-23 | 2019-03-08 | 杭州老板电器股份有限公司 | Water shortage detection method, device and the intelligent appliance of intelligent appliance |
| CN111102392B (en) * | 2018-10-26 | 2022-01-11 | 浙江三花智能控制股份有限公司 | Control system and control method of electric valve |
| CN110793229A (en) * | 2019-11-18 | 2020-02-14 | 南华大学 | Mine heat collection refrigeration test system and mine heat collection refrigeration equipment |
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| JP2000266228A (en) * | 1999-03-15 | 2000-09-26 | Kajima Corp | Thermal valve and control method for the thermal valve |
| CN101256020B (en) * | 2008-04-16 | 2010-07-21 | 谭文胜 | Method and apparatus for controlling central air-conditioning end supply backwater temperature difference |
| CN201212720Y (en) * | 2008-04-16 | 2009-03-25 | 谭文胜 | Apparatus for controlling central air-conditioning end to supply backwater temperature difference |
| CN101995076A (en) * | 2009-08-14 | 2011-03-30 | 杭州三花科技有限公司 | Electrical temperature difference adjustment method, electrical temperature difference adjustment valve and air conditioning system |
| CN101749828A (en) * | 2009-09-07 | 2010-06-23 | 杭州哲达科技股份有限公司 | HAVC temperature difference control and energy saving method |
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| CN201764018U (en) * | 2010-09-08 | 2011-03-16 | 厦门市易洁卫浴有限公司 | Water outlet mechanism with precisely controlled water temperature and flow |
| JP5492713B2 (en) * | 2010-09-09 | 2014-05-14 | アズビル株式会社 | Water supply temperature control apparatus and method |
| CN201973345U (en) * | 2010-12-13 | 2011-09-14 | 佛山市顺德区瑞德电子实业有限公司 | Constant-temperature water-mixing switch control device |
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