CN115289668A - Dew point temperature control device and control method thereof - Google Patents
Dew point temperature control device and control method thereof Download PDFInfo
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- CN115289668A CN115289668A CN202210917899.8A CN202210917899A CN115289668A CN 115289668 A CN115289668 A CN 115289668A CN 202210917899 A CN202210917899 A CN 202210917899A CN 115289668 A CN115289668 A CN 115289668A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
- F24F11/523—Indication arrangements, e.g. displays for displaying temperature data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/04—Preventing the formation of frost or condensate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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Abstract
The invention discloses a dew point temperature control device and a control method thereof, wherein the dew point temperature control device comprises a shell, a liquid crystal display screen embedded in the front of the shell and a circuit board which is packaged in the shell and is behind the liquid crystal display screen; the shell is provided with a switch key, a mode switching key and a temperature setting knob; the back of the shell is provided with a first relay and a second relay; the circuit board is provided with a processor. The dew point temperature control device provided by the invention is provided with the temperature setting knob, the dew point temperature controller can be adjusted through the knob, the control on the dew point temperature controller is simple and convenient, and the operation of the dew point temperature controller is convenient for the old and children; through this dew point temperature control device, can warm up with warm up and carry out centralized control capillary air conditioner, need not to warm up to capillary air conditioner in every room, install a plurality of independent control panel for the fitment style can be unified, and reduced the pre-buried position of temperature controller, made the installation work process become convenient.
Description
Technical Field
The application relates to the technical field of household equipment, in particular to a dew point temperature control device and a control method thereof.
Background
When the water vapor content in the air is unchanged and the air pressure is constant, the temperature when the water vapor in the air reaches saturation is called dew point temperature, which is called dew point for short, by reducing the air temperature.
In the existing indoor capillary chamber control scheme, a dew point temperature controller is arranged in each room, and each temperature controller carries out logic judgment by collecting the temperature and the humidity of the environment and the surface temperature of a capillary to control the opening and closing of a capillary control valve.
However, the existing dew point temperature controllers are often adjusted in a single mode through a key, and the operating mode is complex, so that the dew point temperature controllers are inconvenient for old people and children to use.
Disclosure of Invention
In view of the above, a dew point temperature control device and a control method thereof are provided.
In a first aspect, a dew point temperature control device comprises a shell, a first temperature sensor, a humidity sensor, a liquid crystal display screen embedded in the front of the shell, and a circuit board encapsulated in the shell and behind the liquid crystal display screen; the shell is provided with a switch key, a mode switching key and a temperature setting knob; a first relay and a second relay are arranged on the back of the shell; the circuit board is provided with a processor;
a first temperature acquisition input end of the processor is electrically connected with a data output end of a first temperature sensor arranged indoors, and the first temperature sensor is used for acquiring indoor environment temperature; the humidity acquisition input end of the processor is electrically connected with the data output end of a humidity sensor arranged indoors, and the humidity sensor is used for acquiring the indoor environment humidity; the data input end of the liquid crystal display screen is electrically connected with the data output end of the processor; the signal output end of the switch key is electrically connected with the first signal input end of the processor; the signal output end of the mode switching key is electrically connected with the second signal input end of the processor; the signal output end of the temperature setting knob is electrically connected with the third signal input end of the processor; a first control signal output end of the processor is electrically connected with a control signal input end of a first relay, and the first relay is used for being electrically connected with the floor heating electromagnetic valve; the second control signal output of treater and the control signal input electric connection of second relay, the second relay be used for with capillary network solenoid valve electric connection, be provided with second temperature sensor on the capillary network, the data output of second temperature sensor and the second temperature acquisition input electric connection of treater, second temperature sensor is used for gathering the cold surface temperature of capillary network.
Optionally, the first temperature sensor, the second temperature sensor and the humidity sensor are all electrically connected with the processor through 485 interfaces.
Further optionally, the first temperature sensor, the second temperature sensor and the humidity sensor all adopt a MODBUS-RTU communication protocol.
Optionally, the first temperature sensor and the humidity sensor are disposed on the housing.
In a second aspect, a method for controlling a dew point temperature control device is applied to the dew point temperature control device adjusted by a knob provided in any one of the first aspect, and includes:
after a user starts the dew point temperature control device through a switch key, the processor acquires a temperature adjusting mode selected by the user through a mode switching key, wherein the temperature adjusting mode is one of a heating mode, a ventilation mode and a refrigeration mode, and acquires an ambient temperature T measured by a first temperature sensor and an ambient humidity D measured by a humidity sensor in real time;
in the cooling mode, the processor obtains the preset temperature T set by the user through the temperature setting knob 1 And send a disconnection to the first relayThe control signal is used for switching off the first relay and controlling the floor heating electromagnetic valve to be closed;
when the communication between the processor and the second temperature sensor is normal, the processor acquires the cold surface temperature T of the capillary network measured by the second temperature sensor C And determining the measured cold surface temperature T of the capillary network C Whether the temperature is within a preset temperature interval or not; if the measured cold surface temperature T of the capillary network is determined C When the temperature is within the preset temperature range, the measured actual water temperature T of the capillary network C As dew point temperature protection value T b (ii) a When the communication between the processor and the second temperature sensor is abnormal, the processor calculates a dew point temperature protection value T according to the obtained environment temperature T and the obtained environment humidity D b ；
Judging whether the current environment temperature T is lower than the dew point temperature protection value T b When the current environment temperature T is judged to be lower than the dew point temperature protection value T b When the capillary network electromagnetic valve is closed, the processor sends a disconnection control signal to the second relay to disconnect the second relay and control the capillary network electromagnetic valve to be closed; when the current environment temperature T is judged to be higher than the dew point temperature protection value T b When, if T is less than T 1 At t, the processor sends a disconnection control signal to the second relay, so that the second relay is disconnected, and the capillary network electromagnetic valve is controlled to be closed; if T > T 1 When the current is + t, the processor sends a closing control signal to the second relay to close the second relay and control the opening of the capillary network electromagnetic valve; t is a temperature interval parameter written in the processor in advance.
Optionally, the preset temperature interval is (16, 40).
Optionally, the calculating yields a dew point temperature T b The method comprises the following steps:
calculating the intermediate variable X, X = (0.66077 +7.5 + T/(237.3 + T)) + log10 (D) -2;
calculating the dew point temperature protection value T b ，T b ＝(0.66077-X)*237.3)/(X-8.16077)。
Optionally, the method further comprises:
when the current environment temperature T is judged to be lower than the dew point temperature protection value T b When it is processedThe device sends a dew point protection prompt instruction to the liquid crystal display screen, and a dew point protection prompt is output through the liquid crystal display screen.
The invention has at least the following beneficial effects:
based on further analysis and research on the problems in the prior art, the invention realizes that the adjustment mode of the temperature controller needs to be more diversified, and except the existing temperature controller adjusted by a key mode, the invention needs to invent a dew point temperature controller adopting a knob adjustment mode; the dew point temperature control device provided by the embodiment of the invention is provided with the temperature setting knob, the dew point temperature controller can be adjusted through the knob, the control on the dew point temperature controller is simple and convenient, and the operation of the dew point temperature controller is convenient for the old and children; through this dew point temperature control device, can warm up with heating up capillary air conditioner and carry out centralized control, need not to warm up at every room to capillary air conditioner with warm up, install corresponding a plurality of independent control panel for when the fitment style can be unified, reduced because of single accuse capillary air conditioner, warm up the pre-buried position of temperature controller that reserves, make the installation work process become simple and convenient, convenient.
Drawings
Fig. 1 is an external view schematically illustrating a dew point temperature control device according to an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of a dew point temperature control device according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a control method of a dew point temperature control device according to an embodiment of the present invention.
Description of reference numerals:
1. a housing; 2. a liquid crystal display screen; 3. switching a key; 4. a mode switching key; 5. a temperature setting knob; 6. a first relay; 7. a second relay; 8. a processor; 9. a first temperature sensor; 10. a humidity sensor; 11. a second temperature sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, as shown in fig. 1 and 2, there is provided a dew point temperature control device comprising a case 1, a liquid crystal display 2 embedded on a front surface of the case 1, and a circuit board enclosed in the case 1 behind the liquid crystal display 2; the shell 1 is provided with a switch key 3, a mode switching key 4 and a temperature setting knob 5; a first relay 6 and a second relay 7 are arranged on the back surface of the shell 1; the circuit board is provided with a processor 8, and the dew point temperature control device can be mounted on one side wall behind the house.
Further, as shown in fig. 1 and fig. 2, a first temperature acquisition input end of the processor 8 is electrically connected to a data output end of a first temperature sensor 9 disposed indoors, and the first temperature sensor 9 is used for acquiring an indoor ambient temperature; a humidity acquisition input end of the processor 8 is electrically connected with a data output end of a humidity sensor 10 arranged indoors, and the humidity sensor 10 is used for acquiring indoor environment humidity; the data input end of the liquid crystal display screen 2 is electrically connected with the data output end of the processor 8; the signal output end of the switch key 3 is electrically connected with the first signal input end of the processor 8; the signal output end of the mode switching key 4 is electrically connected with the second signal input end of the processor 8; the signal output end of the temperature setting knob 5 is electrically connected with the third signal input end of the processor 8; a first control signal output end of the processor 8 is electrically connected with a control signal input end of the first relay 6, and the first relay 6 is used for being electrically connected with the floor heating electromagnetic valve; a second control signal output end of the processor 18 is electrically connected with a control signal input end of the second relay 7, the second relay 7 is electrically connected with a capillary network electromagnetic valve, a second temperature sensor 11 is arranged on the capillary network, a data output end of the second temperature sensor 11 is electrically connected with a second temperature acquisition input end of the processor 8, and the second temperature sensor 11 is used for acquiring the cold surface temperature of the capillary network.
Alternatively, the first temperature sensor 9 and the humidity sensor 10 may be provided directly on the housing 1. The first temperature sensor 9, the second temperature sensor 11 and the humidity sensor 10 are all electrically connected with the processor 8 through 485 interfaces. The first temperature sensor 9, the second temperature sensor 11 and the humidity sensor 10 all adopt MODBUS-RTU communication protocols, and the delivery communication parameters of the modules are 9600.8.1.N; the sensor parameters of the first temperature sensor 9 and the second temperature sensor 11 are 25 ℃ 10K NTC b =3950k.
First temperature sensor 9 and humidity transducer 10 also can set up in places such as indoor ceiling, as long as can guarantee that first temperature sensor 9 and humidity transducer 10 can detect external environment's temperature and humidity comparatively accurately can.
When the capillary network air conditioner is applied, each room provided with the capillary network is used as an air conditioning area, a temperature controller is arranged in each room to control the on-off of the capillary network electric heating valve on the corresponding loop, and the indoor temperature is controlled within a set range; when the room humidity is higher and approaches to the dew point, the anti-condensation logic can automatically control the relay to cut off the electromagnetic valve of the capillary network of the water system and start the anti-condensation protection of the capillary network.
The dew point temperature control device provided by the embodiment of the invention is provided with the temperature setting knob, the dew point temperature controller can be adjusted through the knob, the control on the dew point temperature controller is simple and convenient, and the operation of the dew point temperature controller is convenient for the old and children; through this dew point temperature control device, can warm up and carry out centralized control to capillary air conditioner, that is to say that a temperature controller has integrateed the control of capillary air conditioner, two kinds of valves that warm up in the water, need not to warm up at every room to capillary air conditioner, installs corresponding a plurality of independent control panel for when the fitment style can be unified, reduced because of the capillary air conditioner of single control, warm up the pre-buried position of temperature controller that reserves, make the installation work process become simple and convenient, convenient.
In one embodiment, as shown in fig. 3, a method for controlling a dew point temperature control device is provided, which is applied to the dew point temperature control device provided in the above embodiment, and includes the following steps:
step S301, after a user starts a dew point temperature control device through a switch key, a processor acquires a temperature adjusting mode selected by the user through a mode switching key, wherein the temperature adjusting mode is one of a heating mode, a ventilation mode and a refrigeration mode, and acquires an ambient temperature T measured by a first temperature sensor and an ambient humidity D measured by a humidity sensor in real time;
step S302, in the refrigeration mode, the processor obtains the preset temperature T set by the user through the temperature setting knob 1 Sending a disconnection control signal to the first relay to disconnect the first relay and control the floor heating electromagnetic valve to be closed;
step S303, when the communication between the processor and the second temperature sensor is normal, namely the communication of the cold surface temperature is normal, the processor obtains the cold surface temperature T of the capillary network measured by the second temperature sensor C And determining the measured cold surface temperature T of the capillary network C Whether the temperature is within a preset temperature interval or not; if the measured cold surface temperature T of the capillary network is judged C When the temperature is within the preset temperature range, the measured actual water temperature T of the capillary network C As dew point temperature protection value T b (ii) a When the communication between the processor and the second temperature sensor is abnormal, the processor calculates a dew point temperature protection value T according to the obtained environment temperature T and the obtained environment humidity D b ；
Wherein the preset temperature interval is (16, 40), namely 16 DEG C<TC<At 40 ℃ T b ＝T C ；
Step S304, judging whether the current environment temperature T is lower than the dew point temperature protection value T b When the current environment temperature T is judged to be lower than the dew point temperature protection value T b When the capillary network electromagnetic valve is closed, the processor sends a disconnection control signal to the second relay, so that the second relay is disconnected and the capillary network electromagnetic valve is controlled to be closed; when the current environment temperature T is judged to be higher than the dew point temperature protection value T b When T is less than T 1 At t, the processor sends a disconnection control signal to the second relay, so that the second relay is disconnected and the capillary network electromagnetic valve is controlled to be closed; if T > T 1 When the current is + t, the processor sends a closing control signal to the second relay to close the second relay and control the opening of the capillary network electromagnetic valve; when T is more than T1-T and less than T1+ T, maintaining the current state; t is a temperature interval parameter written in the processor in advance, so that the temperature can be controlled within an interval range of (T1-T, T1+ T).
Further, calculating to obtain a dew point temperature protection value T b The method specifically comprises the following steps:
calculating the intermediate variable X, X = (0.66077 +7.5 + T/(237.3 + T)) + log10 (D) -2;
calculating the dew point temperature protection value T b ，T b ＝(0.66077-X)*237.3)/(X-8.16077)。
Further, the method further comprises:
when the current environment temperature T is judged to be lower than the dew point temperature protection value T b And then, the processor sends a dew point protection prompt instruction to the liquid crystal display screen and outputs a dew point protection prompt through the liquid crystal display screen.
Further, the method further comprises:
when the temperature adjusting mode is the heating mode, the processor acquires a preset temperature T1 set by a user through a temperature setting key, and sends a closing control signal to the first relay, so that the first relay is closed, and the floor heating electromagnetic valve is controlled to be opened; when T is less than T1-T, the processor sends a closing control signal to the second relay to close the second relay and control the opening of the capillary network electromagnetic valve; when T is larger than T1+ T, the processor sends a disconnection control signal to the second relay to disconnect the second relay and control the capillary network electromagnetic valve to be closed; when T is more than T1-T and less than T1+ T, maintaining the current state; t is a temperature interval parameter written in the first processor in advance, so that the temperature can be controlled within an interval range of (T1-T, T1+ T).
Further, the method further comprises:
when the temperature adjusting mode is the ventilation mode, the processor sends disconnection control signals to the first relay and the second relay, so that the first relay and the second relay are disconnected, and the floor heating electromagnetic valve and the capillary network electromagnetic valve are controlled to be closed.
That is, the control mode of the dew point temperature control device is divided into three stages: refrigerating, heating and ventilating. Aiming at a house applying a capillary network air conditioning mode and water and floor heating heat supply, two-joint control of a capillary network water valve and a floor heating water valve is required to be realized at the same time; the capillary network and the floor heating are started simultaneously in winter, and only the capillary network is started in summer:
1. in a refrigeration mode: the floor heating valve is normally closed, when the indoor temperature is higher than the set temperature, the temperature controller controls the capillary valve to be opened to reduce the indoor temperature, and when the indoor temperature is lower than the set temperature, the capillary valve is closed;
2. in a heating mode, the floor heating valve is normally open, when the indoor temperature is lower than a set temperature, the temperature controller controls the capillary valve to be opened to increase the indoor temperature, and when the indoor temperature is higher than the set temperature, the capillary valve is closed;
3. and in the ventilation mode, the floor heating valve and the capillary valve are closed.
Further, the method further comprises:
the processor acquires humidity data measured by the humidity sensor in real time;
the processor acquires temperature data and humidity data in real time, a temperature regulation mode selected by a user, the current on-off state of the floor heating solenoid valve and the capillary network solenoid valve and a dew point temperature protection value T b And sending the data to a liquid crystal display screen for displaying through the liquid crystal display screen. That is to say, the liquid crystal display (LCD screen) of the dew point temperature control device can display the mode, the switch states of the capillary network and the floor heating solenoid valve, the actually measured temperature, the actually measured humidity, the set temperature and the temperature when starting the dew point protection.
By the method provided by the embodiment of the invention, the dew point temperature control device provided by the invention can compare and logically judge the collected environmental temperature and humidity and the capillary surface temperature, so that the centralized control on a capillary network and a floor heating system is realized, and the regulation and control of the indoor temperature and the dew point are realized; need not to install corresponding a plurality of independent control panel at every room to capillary air conditioner and ground heating for when the fitment style can be unified, reduced because of the pre-buried position of the temperature controller that singly controls capillary air conditioner, ground heating and reserve, make the installation work process become simple and convenient, convenient.
It should be understood that, although the steps in the flowchart of fig. 3 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not limited to being performed in the exact order illustrated and, unless explicitly stated herein, may be performed in other orders. Moreover, at least a portion of the steps in fig. 3 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least a portion of the other steps or stages.
In one embodiment, a computer-readable storage medium having a computer program stored thereon is provided, which relates to all or part of the processes of the above-described embodiment methods.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A dew point temperature control device is characterized by comprising a shell, a liquid crystal display screen embedded in the front of the shell and a circuit board encapsulated in the shell and behind the liquid crystal display screen; the shell is provided with a switch key, a mode switching key and a temperature setting knob; a first relay and a second relay are arranged on the back of the shell; the circuit board is provided with a processor;
a first temperature acquisition input end of the processor is electrically connected with a data output end of a first temperature sensor arranged indoors, and the first temperature sensor is used for acquiring indoor environment temperature; the humidity acquisition input end of the processor is electrically connected with the data output end of an indoor humidity sensor, and the humidity sensor is used for acquiring the indoor environment humidity; the data input end of the liquid crystal display screen is electrically connected with the data output end of the processor; the signal output end of the switch key is electrically connected with the first signal input end of the processor; the signal output end of the mode switching key is electrically connected with the second signal input end of the processor; the signal output end of the temperature setting knob is electrically connected with the third signal input end of the processor; a first control signal output end of the processor is electrically connected with a control signal input end of a first relay, and the first relay is used for being electrically connected with the floor heating electromagnetic valve; the second control signal output of treater and the control signal input electric connection of second relay, the second relay be used for with capillary network solenoid valve electric connection, be provided with second temperature sensor on the capillary network, the data output of second temperature sensor and the second temperature acquisition input electric connection of treater, second temperature sensor is used for gathering the cold surface temperature of capillary network.
2. The dew point temperature control device of claim 1, wherein the first temperature sensor, the second temperature sensor and the humidity sensor are electrically connected to the processor through 485 interfaces.
3. The dew point temperature control device of claim 2, wherein the first temperature sensor, the second temperature sensor and the humidity sensor all employ a MODBUS-RTU communication protocol.
4. Dew point temperature control device as claimed in claim 2, characterized in that the first temperature sensor and the humidity sensor are arranged on the housing.
5. A control method of a dew point temperature control device is applied to the dew point temperature control device of any one of claims 1 to 4, and comprises the following steps:
after a user starts the dew point temperature control device through a switch key, the processor acquires a temperature adjusting mode selected by the user through a mode switching key, wherein the temperature adjusting mode is one of a heating mode, a ventilation mode and a refrigeration mode, and acquires an ambient temperature T measured by a first temperature sensor and an ambient humidity D measured by a humidity sensor in real time;
in the cooling mode, the processor obtains the preset temperature T set by the user through the temperature setting knob 1 Sending a disconnection control signal to the first relay to disconnect the first relay and control the floor heating electromagnetic valve to be closed;
when the communication between the processor and the second temperature sensor is normal, the processor acquires the cold surface temperature T of the capillary network measured by the second temperature sensor C And determining the measured cold surface temperature T of the capillary network C Whether the temperature is within a preset temperature interval or not; if the measured cold surface temperature T of the capillary network is determined C When the temperature is within the preset temperature range, the measured actual water temperature of the capillary networkT C As dew point temperature protection value T b (ii) a When the communication between the processor and the second temperature sensor is abnormal, the processor calculates a dew point temperature protection value T according to the acquired environment temperature T and the acquired environment humidity D b ；
Judging whether the current environment temperature T is lower than the dew point temperature protection value T b When the current environment temperature T is judged to be lower than the dew point temperature protection value T b When the capillary network electromagnetic valve is closed, the processor sends a disconnection control signal to the second relay, so that the second relay is disconnected and the capillary network electromagnetic valve is controlled to be closed; when the current environment temperature T is judged to be higher than the dew point temperature protection value T b When T is less than T 1 At t, the processor sends a disconnection control signal to the second relay, so that the second relay is disconnected and the capillary network electromagnetic valve is controlled to be closed; if T > T 1 When the current is + t, the processor sends a closing control signal to the second relay to close the second relay and control the opening of the capillary network electromagnetic valve; t is a temperature interval parameter written in the processor in advance.
6. Control method of dew point temperature control device according to claim 5, characterized in that the preset temperature interval is (16, 40).
7. The method of claim 5, wherein the calculated dew point temperature T is calculated b The method comprises the following steps:
calculating the intermediate variable X, X = (0.66077 +7.5 + T/(237.3 + T)) + log10 (D) -2;
calculating the dew point temperature protection value T b ，T b ＝(0.66077-X)*237.3)/(X-8.16077)。
8. The method of controlling a dew point temperature control device of claim 5, further comprising:
when the current environment temperature T is judged to be lower than the dew point temperature protection value T b And then, the processor sends a dew point protection prompt instruction to the liquid crystal display screen and outputs a dew point protection prompt through the liquid crystal display screen.
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