CN219418024U - Energy-saving control circuit for adjusting indoor thermal environment - Google Patents

Energy-saving control circuit for adjusting indoor thermal environment Download PDF

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Publication number
CN219418024U
CN219418024U CN202320474865.6U CN202320474865U CN219418024U CN 219418024 U CN219418024 U CN 219418024U CN 202320474865 U CN202320474865 U CN 202320474865U CN 219418024 U CN219418024 U CN 219418024U
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circuit
voltage comparator
voltage
input end
window
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于瑛
相天慧
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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Abstract

The utility model relates to the field of circuits, in particular to an energy-saving control circuit for adjusting indoor thermal environment. The system comprises a conversion circuit and a total logic circuit, wherein the total logic circuit comprises a voltage comparison circuit, a window voltage comparator circuit, an NOT gate circuit, an OR gate chip and an AND gate chip; the output end of the conversion circuit is respectively connected with the input ends of the voltage comparison circuit and the window voltage comparator circuit; the output end of the voltage comparison circuit is respectively connected with the input ends of the NOT gate circuit, the OR gate chip and the AND gate chip and the fan switch; the output end of the window voltage comparator circuit is respectively connected with the input end of the OR gate chip and the display device; the output end of the NOT gate circuit is connected with the input end of the AND gate chip, the output end of the AND gate chip is connected with the input end of the OR gate chip and the air conditioner, and the output end of the OR gate chip is connected with the input end of the AND gate chip and the electric window switch. The circuit automatically regulates and controls an air conditioner, an electric window and a fan according to the indoor and outdoor environment states, so that the purposes of regulating the indoor environment and saving energy consumption are achieved.

Description

Energy-saving control circuit for adjusting indoor thermal environment
Technical Field
The utility model relates to the field of circuits, in particular to an energy-saving control circuit for adjusting indoor thermal environment.
Background
Building energy consumption is increasing with global climate change and increasing demand for indoor comfort level. A long-recognized green building strategy to improve building energy efficiency is to make full use of natural ventilation, with the goal of using as much outdoor air as possible for free cooling to reduce heating, ventilation and air conditioning energy consumption, while using mechanical heating or cooling to meet indoor thermal comfort when outdoor conditions are not suitable. Compared with the traditional air conditioning mode, the energy consumption and the greenhouse gas emission are reduced, and the sick building syndrome is reduced.
In China, most existing civil buildings use air conditioners, fans, windowed ventilation and other modes to create a comfortable indoor environment, but the operation of switching on and off the devices by indoor personnel is based on spontaneous behavior. The energy-saving efficiency of the building is greatly dependent on the regulation and control of equipment such as windows, air conditioners and the like, and due to the fact that indoor personnel have deviation on indoor environment perception, improper operation is adopted, and the space is supercooled or overheated, so that energy is wasted.
Disclosure of Invention
The utility model aims to overcome the defects and provide an energy-saving control circuit for adjusting indoor thermal environment, which can automatically adjust and control an air conditioner, an electric window switch and a fan according to the indoor and outdoor environment state, thereby achieving the effects of adjusting the indoor environment, ensuring the indoor thermal comfort and simultaneously saving energy consumption.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
an energy-saving control circuit for adjusting indoor thermal environment comprises a conversion circuit and a total logic circuit, wherein the total logic circuit comprises a voltage comparison circuit, a window voltage comparator circuit, an NOT gate circuit, an OR gate chip 74LS32 and an AND gate chip CD4081;
the output end of the conversion circuit is respectively connected with the input end of the voltage comparison circuit and the input end of the window voltage comparator circuit;
the output end of the voltage comparison circuit is respectively connected with the input end of the NOT gate circuit, the input end of the OR gate chip 74LS32, the input end of the AND gate chip CD4081 and the fan switch;
the output end of the window voltage comparator circuit is respectively connected with the input end of the OR gate chip 74LS32 and the display device;
the output end of the NOT gate circuit is connected with the input end of the AND gate chip CD4081, the output end of the AND gate chip CD4081 is connected with the input end of the OR gate chip 74LS32 and the air conditioner, the output end of the OR gate chip 74LS32 is connected with the input end of the AND gate chip CD4081 and the electric window switch, and the electric window switch is used for controlling the opening and closing of a window.
The conversion circuit comprises a rainwater detection conversion circuit, a wind speed detection conversion circuit, a room temperature detection conversion circuit and an outdoor temperature detection conversion circuit;
the output end of the rainwater detection conversion circuit and the output end of the wind speed detection conversion circuit are respectively connected with the input end of the voltage comparison circuit, the output end of the room temperature detection conversion circuit is respectively connected with the input end of the voltage comparison circuit and the input end of the window voltage comparator circuit, and the output end of the outdoor temperature detection conversion circuit is connected with the input end of the window voltage comparator circuit.
The voltage comparison circuit comprises a voltage comparison circuit L1, a voltage comparison circuit L2, a voltage comparison circuit L3, a voltage comparison circuit L4 and a voltage comparison circuit L5;
the output end of the rainwater detection and conversion circuit is connected with the input end of the voltage comparison circuit L1, and the output end of the voltage comparison circuit L1 is connected with the input end of the OR gate chip 74LS 32;
the output end of the wind speed detection conversion circuit is connected with the input end of the voltage comparison circuit L2, and the output end of the voltage comparison circuit L2 is connected with the input end of the OR gate chip 74LS 32;
the output end of the room temperature detection conversion circuit is respectively connected with the input end of the voltage comparison circuit L3, the input end of the voltage comparison circuit L4 and the input end of the voltage comparison circuit L5, the output end of the voltage comparison circuit L3 is connected with the fan switch, the output end of the voltage comparison circuit L4 is connected with the input end of the AND gate chip CD4081, and the output end of the voltage comparison circuit L5 is connected with the input end of the NOT gate circuit.
The window voltage comparator circuit includes a window voltage comparator circuit W1, a window voltage comparator circuit W2, a window voltage comparator circuit W3, a window voltage comparator circuit W4, and a window voltage comparator circuit W5;
the output end of the room temperature detection conversion circuit is respectively connected with the input end of the window voltage comparator circuit W1, the input end of the window voltage comparator circuit W2 and the input end of the window voltage comparator circuit W4, the output end of the window voltage comparator circuit W1 is connected with the display device, and the output ends of the window voltage comparator circuit W2 and the window voltage comparator circuit W4 are connected with the input end of the OR gate chip 74LS 32;
the output end of the outdoor temperature detection conversion circuit is respectively connected with the input end of the window voltage comparator circuit W3 and the input end of the window voltage comparator circuit W5, and the output ends of the window voltage comparator circuit W3 and the window voltage comparator circuit W5 are connected with the input end of the OR gate chip 74LS 32.
The rainwater detection and conversion circuit, the wind speed detection and conversion circuit, the room temperature detection and conversion circuit and the outdoor temperature detection and conversion circuit have the same structure.
The rainwater detection conversion circuit comprises a chip DAC0832, wherein an input end In of the chip DAC0832 is connected with an I/O port of a main control chip, a pin 20 of the chip DAC0832 is connected with a power supply, and a pin 8-Vref of the chip DAC0832 is connected with-5V voltage; the chip output port Io1 is connected with the negative electrode of the amplifier, the chip output port Io2 is respectively connected with the positive electrode of the amplifier, the chip pins 9-Rf and the ground wire, and a voltage stabilizing capacitor C1 is connected between the chip output port lo2 and the chip pins 9-Rf.
The voltage comparison circuit L1, the voltage comparison circuit L2, the voltage comparison circuit L3, the voltage comparison circuit L4, and the voltage comparison circuit L5 have the same structure.
The voltage comparison circuit L1 comprises an LM393N voltage comparator and resistors R1, rx1 and Rx2, wherein the LM393N voltage comparator is connected with a power supply, the positive input end of the LM393N voltage comparator is connected with the output end of the conversion circuit, the negative input end of the LM393N voltage comparator is sequentially connected with the resistor Rx2 and the resistor R1, a voltage source is connected between the resistor Rx2 and the resistor R1, and the negative input end of the LM393N voltage comparator is grounded through Rx 1.
The window voltage comparator circuit W1, the window voltage comparator circuit W2, the window voltage comparator circuit W3, the window voltage comparator circuit W4, and the window voltage comparator circuit W5 are identical in structure.
The window voltage comparator circuit W1 includes LM393N voltage comparators A1, LM393N voltage comparator A2, resistor R3, resistor Rx4, resistor Rx5, diode D1, diode D2 and zener diode DZ, the switching circuit output connects the forward input of LM393N voltage comparator A1 and the reverse input of LM393N voltage comparator A2, LM393N voltage comparator A1 connects the power, resistor Rx3, resistor Rx4 and resistor Rx5 are connected in series, the reverse input of LM393N voltage comparator A1 connects between resistor Rx3 and resistor Rx4, the forward input of LM393N voltage comparator A2 connects between resistor Rx4 and resistor Rx5, the output of LM393N voltage comparator A1 connects resistor R2 through diode D1, the output of LM393N voltage comparator A2 connects resistor R2 through diode D2, resistor R2 connects the parallel circuit that constitutes through resistor R3 and zener diode DZ.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model comprises a conversion circuit and a total logic circuit, wherein the conversion circuit is used for converting a digital signal related to an environmental state into an analog signal and outputting the analog signal to the total logic circuit, and the total logic circuit realizes the control of the start and stop of a fan, a display device, the start and stop of an air conditioner and the opening and closing of an electric window through the comparison and judgment of an input electric signal. The total logic circuit includes a voltage comparison circuit, a window voltage comparator circuit, an not gate circuit, an or gate chip 74LS32, and an and gate chip CD4081. The output end of the conversion circuit is respectively connected with the input end of the voltage comparison circuit and the input end of the window voltage comparator circuit, the output end of the voltage comparison circuit is respectively connected with the input end of the NOT gate circuit, the input end of the OR gate chip 74LS32, the input end of the AND gate chip CD4081 and the fan switch, and the start and stop control of the fan can be realized through the voltage comparison circuit, so that the regulation and control of the indoor environment can be realized. The output of the window voltage comparator circuit is connected to the input of the or gate chip 74LS32 and to a display device, respectively, by which the indoor thermal comfort state is displayed in real time. The output end of the NOT gate circuit is connected with the input end of the AND gate chip CD4081, the output end of the AND gate chip CD4081 is connected with the input end of the OR gate chip 74LS32 and the air conditioner, and the output end of the OR gate chip 74LS32 is connected with the electric window switch. The indoor environment adjusting capability is further enhanced by controlling the starting and stopping of the air conditioner and the opening and closing of the window, and the aim of saving energy is achieved on the premise of ensuring indoor heat comfort.
Further, the conversion circuit comprises a rainwater detection conversion circuit, a wind speed detection conversion circuit, a room temperature detection conversion circuit and an outdoor temperature detection conversion circuit. The rainwater detection conversion circuit is used for converting digital signals output by the outdoor rainwater detection module into corresponding voltage values, the wind speed detection conversion circuit is used for converting digital signals output by the outdoor wind speed detection module into corresponding voltage values, the room temperature detection conversion circuit is used for converting digital signals output by the indoor temperature detection module into corresponding voltage values, the outdoor temperature detection conversion circuit is used for converting digital signals output by the outdoor temperature detection module into corresponding voltage values, and the four conversion circuits are used for converting digital signals output by the detection module into analog signals so as to facilitate signal processing judgment of the total logic circuit.
Further, the voltage comparison circuit comprises a voltage comparison circuit L1, a voltage comparison circuit L2, a voltage comparison circuit L3, a voltage comparison circuit L4 and a voltage comparison circuit L5; the voltage comparison circuit L1 is used for processing the electric signals input by the rainwater detection and conversion circuit, the voltage comparison circuit L2 is used for processing the electric signals input by the wind speed detection and conversion circuit, and the voltage comparison circuit L3, the voltage comparison circuit L4 and the voltage comparison circuit L5 are used for processing the electric signals input by the room temperature detection and conversion circuit. The voltage comparison circuit realizes the fine processing judgment of the circuit on the environmental information electrical signals.
Further, the window voltage comparator circuit includes a window voltage comparator circuit W1, a window voltage comparator circuit W2, a window voltage comparator circuit W3, a window voltage comparator circuit W4, and a window voltage comparator circuit W5; the window voltage comparator circuit W1, the window voltage comparator circuit W2 and the window voltage comparator circuit W4 are used for processing the electrical signals input by the room temperature detection conversion circuit, and the window voltage comparator circuit W3 and the window voltage comparator circuit W5 are used for processing the electrical signals input by the outdoor temperature detection conversion circuit.
Drawings
FIG. 1 is a general logic circuit diagram of the present utility model;
FIG. 2 is a diagram of circuit connections according to the present utility model;
FIG. 3 is a block diagram of the present utility model;
FIG. 4 is a schematic diagram of the connection of the circuit of the present utility model to a fan, air conditioner and electric window switch;
FIG. 5 is a circuit diagram of the present utility model
FIG. 6 is a voltage comparison circuit diagram of the present utility model;
FIG. 7 is a window voltage comparison circuit diagram of the present utility model.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, an energy-saving control circuit for adjusting indoor thermal environment comprises a conversion circuit and a total logic circuit, wherein the total logic circuit comprises a voltage comparison circuit, a window voltage comparator circuit, an not circuit, an or gate chip 74LS32 and an and gate chip CD4081;
the output end of the conversion circuit is respectively connected with the input end of the voltage comparison circuit and the input end of the window voltage comparator circuit;
the output end of the voltage comparison circuit is respectively connected with the input end of the NOT gate circuit, the input end of the OR gate chip 74LS32, the input end of the AND gate chip CD4081 and the fan switch;
the output end of the window voltage comparator circuit is respectively connected with the input end of the OR gate chip 74LS32 and the display device;
the output end of the NOT gate circuit is connected with the input end of the AND gate chip CD4081, the output end of the AND gate chip CD4081 is connected with the input end of the OR gate chip 74LS32 and the air conditioner, and the output end of the OR gate chip 74LS32 is connected with the input end of the AND gate chip CD4081 and the electric window switch.
Preferably, the utility model comprises a conversion circuit and a total logic circuit, wherein the conversion circuit is used for converting a digital signal related to an environmental state into an analog signal and outputting the analog signal to the total logic circuit, and the total logic circuit realizes the control of the start and stop of a fan, a display device, the start and stop of an air conditioner and the opening and closing of an electric window through the comparison and judgment of the input electric signals. The total logic circuit includes a voltage comparison circuit, a window voltage comparator circuit, an not gate circuit, an or gate chip 74LS32, and an and gate chip CD4081. The output end of the conversion circuit is respectively connected with the input end of the voltage comparison circuit and the input end of the window voltage comparator circuit, the output end of the voltage comparison circuit is respectively connected with the input end of the NOT gate circuit, the input end of the OR gate chip 74LS32, the input end of the AND gate chip CD4081 and the fan switch, and the start and stop control of the fan can be realized through the voltage comparison circuit, so that the regulation and control of the indoor environment can be realized. The output of the window voltage comparator circuit is connected to the input of the or gate chip 74LS32 and to a display device, respectively, by which the real-time display of the indoor thermal comfort state is performed. The output end of the NOT gate circuit is connected with the input end of the AND gate chip CD4081, the output end of the AND gate chip CD4081 is connected with the input end of the OR gate chip 74LS32 and the air conditioner, and the output end of the OR gate chip 74LS32 is connected with the electric window switch. The indoor environment adjusting capability is further enhanced by controlling the start and stop of the air conditioner and the opening and closing of the window, and the purpose of energy saving is achieved. The energy-saving control circuit is opened and closed in real time through the electric window switch, the fan and the air conditioner, thereby achieving the purposes of adjusting the indoor environment and saving energy and ensuring the comfort of the indoor environment, and the connection relation diagram of the circuit, the fan, the air conditioner and the electric window switch is shown in fig. 4.
As shown in fig. 1 and 2, the conversion circuit includes a rain detection conversion circuit, a wind speed detection conversion circuit, a room temperature detection conversion circuit, and an outdoor temperature detection conversion circuit;
the output end of the rainwater detection conversion circuit and the output end of the wind speed detection conversion circuit are respectively connected with the input end of the voltage comparison circuit, the output end of the room temperature detection conversion circuit is respectively connected with the input end of the voltage comparison circuit and the input end of the window voltage comparator circuit, and the output end of the outdoor temperature detection conversion circuit is connected with the input end of the window voltage comparator circuit.
Preferably, the conversion circuit includes a rain detection conversion circuit, a wind speed detection conversion circuit, a room temperature detection conversion circuit, and an outdoor temperature detection conversion circuit. The rainwater detection conversion circuit is used for converting digital signals output by the outdoor rainwater detection module into corresponding voltage values, the wind speed detection conversion circuit is used for converting digital signals output by the outdoor wind speed detection module into corresponding voltage values, the room temperature detection conversion circuit is used for converting digital signals output by the indoor temperature detection module into corresponding voltage values, the outdoor temperature detection conversion circuit is used for converting digital signals output by the outdoor temperature detection module into corresponding voltage values, and the four conversion circuits are used for converting digital signals output by the detection module into analog signals so as to facilitate signal processing judgment of the total logic circuit.
As shown in fig. 1 and 2, the voltage comparison circuit includes a voltage comparison circuit L1, a voltage comparison circuit L2, a voltage comparison circuit L3, a voltage comparison circuit L4, and a voltage comparison circuit L5;
the output end of the rainwater detection and conversion circuit is connected with the input end of the voltage comparison circuit L1, and the output end of the voltage comparison circuit L1 is connected with the input end of the OR gate chip 74LS 32;
the output end of the wind speed detection conversion circuit is connected with the input end of the voltage comparison circuit L2, and the output end of the voltage comparison circuit L2 is connected with the input end of the OR gate chip 74LS 32;
the output end of the room temperature detection conversion circuit is respectively connected with the input end of the voltage comparison circuit L3, the input end of the voltage comparison circuit L4 and the input end of the voltage comparison circuit L5, the output end of the voltage comparison circuit L3 is connected with the fan switch, the output end of the voltage comparison circuit L4 is connected with the input end of the AND gate chip CD4081, and the output end of the voltage comparison circuit L5 is connected with the input end of the NOT gate circuit.
Preferably, the voltage comparison circuit includes a voltage comparison circuit L1, a voltage comparison circuit L2, a voltage comparison circuit L3, a voltage comparison circuit L4, and a voltage comparison circuit L5; the voltage comparison circuit L1 is used for processing the electric signals input by the rainwater detection and conversion circuit, the voltage comparison circuit L2 is used for processing the electric signals input by the wind speed detection and conversion circuit, and the voltage comparison circuit L3, the voltage comparison circuit L4 and the voltage comparison circuit L5 are used for processing the electric signals input by the room temperature detection and conversion circuit. The voltage comparison circuit L1, the voltage comparison circuit L2, the voltage comparison circuit L3, the voltage comparison circuit L4 and the voltage comparison circuit L5 realize the fine processing judgment of the circuit on the environmental information electrical signals, and the accuracy of indoor environment regulation is enhanced.
As shown in fig. 1 and 2, the window voltage comparator circuit includes a window voltage comparator circuit W1, a window voltage comparator circuit W2, a window voltage comparator circuit W3, a window voltage comparator circuit W4, and a window voltage comparator circuit W5;
the output end of the room temperature detection conversion circuit is respectively connected with the input end of the window voltage comparator circuit W1, the input end of the window voltage comparator circuit W2 and the input end of the window voltage comparator circuit W4, the output end of the window voltage comparator circuit W1 is connected with the display device, and the output ends of the window voltage comparator circuit W2 and the window voltage comparator circuit W4 are connected with the input end of the OR gate chip 74LS 32;
the output end of the outdoor temperature detection conversion circuit is respectively connected with the input end of the window voltage comparator circuit W3 and the input end of the window voltage comparator circuit W5, and the output ends of the window voltage comparator circuit W3 and the window voltage comparator circuit W5 are connected with the input end of the OR gate chip 74LS 32.
Preferably, the window voltage comparator circuit includes a window voltage comparator circuit W1, a window voltage comparator circuit W2, a window voltage comparator circuit W3, a window voltage comparator circuit W4, and a window voltage comparator circuit W5; the window voltage comparator circuit W1, the window voltage comparator circuit W2 and the window voltage comparator circuit W4 are used for processing the electrical signals input by the room temperature detection conversion circuit, and the window voltage comparator circuit W3 and the window voltage comparator circuit W5 are used for processing the electrical signals input by the outdoor temperature detection conversion circuit, so that the accuracy of indoor environment regulation is further enhanced.
Preferably, the rainwater detection and conversion circuit, the wind speed detection and conversion circuit, the room temperature detection and conversion circuit and the outdoor temperature detection and conversion circuit have the same structure, so that the circuit structure is convenient to simplify.
As shown In fig. 5, the rainwater detection and conversion circuit comprises a chip DAC0832, an input end In of the chip DAC0832 is connected with an I/O port of a main control chip, a pin 20 of the chip DAC0832 is connected with a power supply, and a pin 8-Vref of the chip DAC0832 is connected with a voltage of-5V; the chip output port Io1 is connected with the negative electrode of the amplifier, the chip output port Io2 is respectively connected with the positive electrode of the amplifier, the chip pins 9-Rf and the ground wire, and a voltage stabilizing capacitor C1 is connected between the chip output port lo2 and the chip pins 9-Rf.
Preferably, as shown in fig. 5, the circuit diagram of the conversion circuit includes a common 8-bit D/a converter chip DAC0832 and an operational amplifier for converting the digital signal output by the detection module into an analog signal, wherein the converter chip DAC0832 outputs in the form of a current, so that the operational amplifier is externally connected to convert the current into a voltage output. Where the resolution of DAC0832 is related to the number of bits of the input digital quantity, the resolution of 8-bit DAC0832 is 5V/256=19.5 mV.
The DAC0832 chip has input data register, so it can be directly connected with the I/O port of the main control chip, and the digital signal output by the detection module can be directly transferred to the conversion circuit by the main control chip.
The DAC0832 chip has 20 pins, as shown in figure 5, pins 4-7 and 13-16 are 8 digital input pins connected with corresponding pins of the main control chip for receiving the output signals of the detection module; pin 20 is the chip power supply Vcc connected with 5V voltage, and pin 8-Vref connected with-5V voltage; the chip output port Io1 is connected with the negative electrode of the amplifier, the chip output port Io2 is respectively connected with the positive electrode of the amplifier, the pins 9-Rf are connected with the output port of the amplifier, and in order to avoid the damage of the voltage abrupt change of the output port to the circuit, a voltage stabilizing capacitor C1=0.1 uf is connected between the output port Io2 and the ground.
Preferably, the voltage comparison circuit L1, the voltage comparison circuit L2, the voltage comparison circuit L3, the voltage comparison circuit L4, and the voltage comparison circuit L5 have the same configuration.
As shown in fig. 6, the voltage comparison circuit L1 includes an LM393N voltage comparator and resistors R1, rx1 and Rx2, the LM393N voltage comparator is connected to a power supply, a positive input terminal of the LM393N voltage comparator is connected to an output terminal of the conversion circuit, a negative input terminal of the LM393N voltage comparator is sequentially connected to the resistor Rx2 and the resistor R1, a 5V voltage source is connected between the resistor Rx2 and the resistor R1, and a negative input terminal of the LM393N voltage comparator is grounded through Rx 1.
Preferably, as shown in fig. 6, a circuit diagram of a voltage comparison circuit is shown, which includes an LM393N voltage comparator, a resistor R1, a resistor Rx1, and a resistor Rx2, wherein a power supply of the voltage comparator Vcc is connected with a voltage of 5v, a forward input end of the voltage comparator is connected with an output voltage of the conversion circuit, a reverse input end of the voltage comparator is connected with the power supply, and the voltage of the reverse input end is made to be a voltage value after the corresponding threshold conversion by dividing the input power voltage through the resistor Rx1 and the resistor Rx2, and the resistance values Rx1 and Rx2 selected by the voltage comparison circuits of different functional modules are different. When the measurement voltage of the conversion circuit is higher than a preset threshold (namely, the forward input end is higher than the reverse input end), the LM393 voltage comparator outputs a high level; when the switching circuit measures a voltage below a preset threshold (i.e., the positive input is below the negative input), the LM393 voltage comparator outputs a low level.
Preferably, the 5 voltage comparison circuits are respectively connected to the resistor Rx1 and the resistor Rx2 with different resistance values, so that different voltage thresholds can be preset.
The total logic comparison circuit comprises 5 voltage comparison circuits, and the functions are as follows:
the voltage comparison circuit L1 compares the output voltage value of the rainwater detection and conversion circuit with a preset voltage threshold value. If the current moment rains, the voltage value output by the rainwater detection and conversion circuit is about 5V, the output end Out of the voltage comparator outputs a high level, and the output voltage value is 5V; if no rain exists at the current moment, the output voltage value of the rainwater detection and conversion circuit is about 0V, the output end Out of the voltage comparator outputs a low level, and the output voltage value is 0V.
The voltage comparison circuit L2 compares the voltage value output by the wind speed detection conversion circuit with a preset voltage threshold value. If the outdoor wind speed is larger at the current moment, the voltage value output by the wind speed detection conversion circuit is larger than the threshold voltage, the output end Out of the voltage comparator outputs a high level, and the output voltage value is 5V; if the outdoor wind speed is larger at the current moment, the output voltage value of the wind speed detection conversion circuit is smaller than the threshold voltage, the output end Out of the voltage comparator outputs a low level, and the output voltage value is 0V.
The voltage comparison circuit L3 compares the output voltage value of the room temperature detection conversion circuit with a preset voltage threshold value, and is used for judging whether the current indoor temperature needs to automatically turn on the fan. When the voltage output by the room temperature detection conversion circuit is larger than a preset voltage threshold value, the output end Out of the voltage comparator outputs a high level, and the output voltage value is 5V; if the output voltage value of the room temperature detection conversion circuit is smaller than the preset voltage threshold value, the output end Out of the voltage comparator outputs a low level, and the output voltage value is 0V.
The voltage comparison circuit L4 compares the output voltage value of the room temperature detection conversion circuit with a preset voltage threshold value and is used for judging whether the current indoor temperature needs to automatically turn on the air conditioner for refrigeration. When the voltage value output by the room temperature detection conversion circuit is larger than a preset voltage threshold value, the output end Out of the voltage comparator outputs a high level, and the output voltage value is 5V; if the output voltage value of the room temperature detection conversion circuit is smaller than the preset voltage threshold value, the output end Out of the voltage comparator outputs a low level, and the output voltage value is 0V.
The voltage comparison circuit L5 compares the output voltage value of the room temperature detection conversion circuit with a preset voltage threshold value and is used for judging whether the current indoor temperature needs to turn on air conditioner heating. When the voltage value output by the room temperature detection conversion circuit is larger than a preset voltage threshold value, the output end Out of the voltage comparator outputs a high level, and the output voltage value is 5V; if the output voltage value of the room temperature detection conversion circuit is smaller than the preset voltage threshold value, the output end Out of the voltage comparator outputs a low level, and the output voltage value is 0V.
Preferably, the window voltage comparator circuit W1, the window voltage comparator circuit W2, the window voltage comparator circuit W3, the window voltage comparator circuit W4, and the window voltage comparator circuit W5 are identical in structure.
As shown in fig. 7, the window voltage comparator circuit W1 includes LM393N voltage comparators A1, LM393N voltage comparator A2, resistor R3, resistor Rx4, resistor Rx5, diode D1, diode D2 and zener diode DZ, the output end of the conversion circuit is connected to the forward input end of LM393N voltage comparator A1 and the reverse input end of LM393N voltage comparator A2, LM393N voltage comparator A1 is connected to the power supply, resistor Rx3, resistor Rx4 and resistor Rx5 are connected in series, the reverse input end of LM393N voltage comparator A1 is connected between resistor Rx3 and resistor Rx4, the forward input end of LM393N voltage comparator A2 is connected to resistor Rx4 and resistor Rx5, the output end of LM393N voltage comparator A1 is connected to resistor R2 through diode D1, the output end of LM393N voltage comparator A2 is connected to resistor R2 through diode D2, and resistor R2 is connected to the ground circuit formed by parallel connection of resistor R3 and diode DZ. Preferably, as shown in fig. 3, the circuit diagram of the window voltage comparator includes 2 LM393N voltage comparators (A1, A2), 5 resistors (R2, R3, rx4, rx 5), two diodes (D1, D2), and a zener Diode (DZ), and functions to detect whether the level of the input signal is between two given threshold levels. The Vcc power supply of the window voltage comparator circuit is connected with 5v voltage, the input In of the circuit is respectively connected with the positive input end of the voltage comparator A1 and the negative input end of the voltage comparator A2, and the input In of the circuit is the output voltage of the conversion circuit and is the compared voltage of the window comparator. The reverse input end High of the voltage comparator A1 represents the High threshold voltage of the window comparator, the forward input end Low of the voltage comparator A2 represents the Low threshold voltage of the window comparator, the series resistor Rx3, the resistor Rx4 and the resistor Rx5 play a role in voltage division, and the window voltage comparator circuits of different functional modules realize the setting of the High threshold voltage High and the Low threshold voltage Low by selecting different resistance values. When the input voltage In is greater than the High threshold voltage High, the diode D1 is turned on, the diode D2 is turned off, and the window voltage comparator circuit outputs a High level. When the input voltage In is smaller than the Low threshold voltage Low, the diode D1 is turned off, the diode D2 is turned on, and the window voltage comparator circuit outputs a high level; when the input voltage In is between the High threshold voltage and the Low threshold voltage (Low < In < High), both the diode D1 and the diode D2 are turned off, and the circuit output voltage is at a Low level.
Preferably, the circuits of the 5 window voltage comparators are respectively connected with a resistor Rx3, a resistor Rx4 and a resistor Rx5 with different resistance values, so that different voltage thresholds can be preset.
The total logic comparison circuit comprises 5 window voltage comparator circuits, and the functions are as follows:
the window voltage comparator circuit W1 outputs a low level at the indoor comfort temperature: and comparing the output voltage value of the room temperature detection conversion circuit with a preset High threshold voltage High and a preset Low threshold voltage Low. When Low < In < High, the window voltage comparator circuit W1 outputs a Low level at the output terminal u_out, otherwise outputs a High level.
The window voltage comparator circuit W3 outputs a low level at the outdoor comfort temperature: and comparing the output voltage value of the outdoor temperature detection conversion circuit with a preset High threshold voltage High and a preset Low threshold voltage Low. The window voltage comparator circuit W3 outputs a Low level at output u_out when Low < In < High, otherwise outputs a High level.
The window voltage comparator circuit W2 outputs a low level at the indoor comfort colder temperature: and comparing the output voltage value of the room temperature detection conversion circuit with a preset High threshold voltage High and a preset Low threshold voltage Low. When Low < In < High, the window voltage comparator circuit W2 outputs a Low level at the output terminal u_out, otherwise outputs a High level.
The window voltage comparator circuit W4 outputs a low level at the indoor comfort bias temperature: and comparing the output voltage value of the room temperature detection conversion circuit with a preset High threshold voltage High and a preset Low threshold voltage Low. When Low < In < High, the window voltage comparator circuit W4 outputs a Low level at the output terminal u_out, otherwise outputs a High level.
The window voltage comparator circuit W5 outputs a low level at outdoor colder temperatures: and comparing the output voltage value of the outdoor temperature detection conversion circuit with a preset High threshold voltage High and a preset Low threshold voltage Low. When Low < In < High, the window voltage comparator circuit W5 outputs a Low level at the output terminal u_out, otherwise outputs a High level.
Preferably, the total logic judging circuit has 5 outputs, namely OUT1 to OUT5, wherein OUT1 to OUT5 are respectively connected with an I/O port of the main control chip, the output signal is high level 1/low level 0, OUT1 is a fan start-stop signal, and when the output is high level 1, the fan motor is started; OUT2 is an indoor thermal comfort signal, when the output is high level 1, a display module connected with the main control chip displays indoor thermal discomfort, and when the output is low level 0, the display module displays indoor thermal comfort; OUT3 is a forward and backward rotation signal of the automatic window opening motor, when the output is high level '1', the window opening motor rotates reversely to automatically close the window, and when the output is low level '0', the window opening motor rotates forwardly to automatically open the window; OUT4 is to automatically start the air conditioner for refrigeration, and when the output is high level 1, the air conditioner refrigeration function is automatically started through an infrared module connected with the main control chip; OUT5 is the automatic air conditioner heating that starts, and when output is high level "1", through the infrared module that links to each other with main control chip automatic start air conditioner heating function.
Preferably, the OR gate chip 74LS32 and AND gate chip CD4081 pin connections are as shown in Table 1, and are as follows:
the outputs of the voltage comparison circuit L1 and the voltage comparison circuit L2 are respectively connected with 2 input pins 1A and 1B of the 74LS32 chip, and the output pin corresponding to the chip is 1Y; the outputs of the window voltage comparator circuits W2 and W3 are respectively connected with 2 input pins 2A and 2B of the 74LS32 chip, and the output pin corresponding to the chip is 2Y; the outputs of the window voltage comparator circuits W4 and W5 are respectively connected with 2 input pins 3A and 3B of the 74LS32 chip, and the output pin corresponding to the chip is 3Y; the output pin 1Y of the chip 74LS32 and the output pin 1Y of the chip CD4081 are respectively connected to the 2 input pins 4A and 4B of the chip 74LS32, and the output pin corresponding to the chip is 4Y.
The output pins 3Y and 2Y of the LS32 chip 74 are respectively connected with the 2 input pins 1A and 1B of the CD4081 chip, and the output pin corresponding to the chip is 1Y; the output pin 4Y of the chip 74LS32 and the output of the voltage comparison circuit L5 are respectively connected with 2 input pins 3A and 3B of the CD4081 chip, and the output pin corresponding to the chip is 3Y; the output pin 4Y of the chip 74LS32 and the output of the voltage comparison circuit L4 are connected to the 2 input pins 4A, 4B of the CD4081 chip, respectively, and the output pin corresponding to the chip is 4Y.
Table 1, or gate chip 74LS32 and gate chip CD4081 pin connection table:
the principle of operation of the overall logic circuit is as follows:
OUT3 windowing principle: the logic judging input-output relationship is shown in table 1, if the rain voltage comparison circuit L1 outputs a high level "1" at the present moment, if the outdoor wind speed excessive voltage comparison circuit L2 outputs a high level "1" at the present moment, as can be seen from table 1, only 1 of 2 input signals is a high level "1", namely, the 74LS32 chip 1Y outputs a high level "1"; similarly, when the outdoor temperature is not in the comfort range, the window voltage comparator circuit W3 outputs a high level "1", and when the indoor temperature is not in the comfort and partial cooling range, the window voltage comparator circuit W2 outputs a high level "1", that is, as long as 1 of 2 input signals of the 74LS32 chip is a high level "1", 2Y outputs a high level "1"; similarly, when the outdoor temperature is not in the partial cooling range, the window voltage comparator circuit W5 outputs a high level "1", the window voltage comparator circuit W4 outputs a high level "1", and only 1 of 2 input signals is a high level "1", namely, the 74LS32 chip 3Y outputs a high level "1"; the 3 groups 74LS32 chips output high level '1' corresponding to the window closing signal, and low level '0' corresponding to the window opening signal. If any one of the group 2 and the group 3 of the 74LS32 chip outputs low level 0, the output of the CD4081 chip 1Y is low level 0, namely the requirement of indoor and outdoor environment heat comfort is met; if any one of the output pins of the 1 st group of the 74LS32 chip and the 1 st group of the CD4081 chip outputs a high level of 1, the 4Y output is a high level of 1, namely, the window is opened to perform natural ventilation when the conditions of no rain and no strong wind outdoors and meeting the requirements of indoor and outdoor environment on thermal comfort are simultaneously met.
OUT4 starts the air conditioner refrigeration operation principle: if the 4 th group output pin 4Y of the 74LS32 chip is high level "1", the voltage comparison circuit L4 outputs high level "1", the CD4081 chip 4Y outputs high level "1", that is, the window is closed at the current moment and the indoor temperature is higher than the refrigerating threshold, and then the air conditioner can be automatically turned on for refrigerating.
OUT5 turns on the air conditioner hot running principle: if the 4 th group output pin 4Y of the 74LS32 chip is a high level "1", the voltage comparison circuit L5 outputs a low level "0", and then outputs a high level "1" through the not gate circuit, the CD4081 chip 3Y outputs a high level "1", that is, the window is closed at the current moment and the indoor temperature is lower than the heating threshold, so that the air conditioner can be automatically turned on for refrigeration.
The OUT1 starts the fan operation principle, the indoor temperature is greater than the temperature threshold value of automatically starting the fan, the voltage comparison circuit L3 outputs a high level "1", and the fan is started.
OUT2 shows the thermal comfort/thermal discomfort operating principle, the indoor temperature is in the thermal comfort temperature range, the window voltage comparator circuit W1 outputs a high level "1", the display module is "thermal comfort", and if the window voltage comparator circuit outputs a low level "0", the display module displays "thermal discomfort".
In summary, the above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. An energy-saving control circuit for adjusting indoor thermal environment is characterized by comprising a conversion circuit and a total logic circuit, wherein the total logic circuit comprises a voltage comparison circuit, a window voltage comparator circuit, an NOT gate circuit, an OR gate chip 74LS32 and an AND gate chip CD4081;
the output end of the conversion circuit is respectively connected with the input end of the voltage comparison circuit and the input end of the window voltage comparator circuit;
the output end of the voltage comparison circuit is respectively connected with the input end of the NOT gate circuit, the input end of the OR gate chip 74LS32, the input end of the AND gate chip CD4081 and the fan switch;
the output end of the window voltage comparator circuit is respectively connected with the input end of the OR gate chip 74LS32 and the display device;
the output end of the NOT gate circuit is connected with the input end of the AND gate chip CD4081, the output end of the AND gate chip CD4081 is connected with the input end of the OR gate chip 74LS32 and the air conditioner, and the output end of the OR gate chip 74LS32 is connected with the input end of the AND gate chip CD4081 and the electric window switch.
2. The energy saving control circuit for adjusting indoor thermal environment according to claim 1, wherein the conversion circuit comprises a rainwater detection conversion circuit, a wind speed detection conversion circuit, a room temperature detection conversion circuit and an outdoor temperature detection conversion circuit;
the output end of the rainwater detection conversion circuit and the output end of the wind speed detection conversion circuit are respectively connected with the input end of the voltage comparison circuit, the output end of the room temperature detection conversion circuit is respectively connected with the input end of the voltage comparison circuit and the input end of the window voltage comparator circuit, and the output end of the outdoor temperature detection conversion circuit is connected with the input end of the window voltage comparator circuit.
3. The energy-saving control circuit for adjusting indoor thermal environment according to claim 2, wherein the voltage comparison circuit comprises a voltage comparison circuit L1, a voltage comparison circuit L2, a voltage comparison circuit L3, a voltage comparison circuit L4 and a voltage comparison circuit L5;
the output end of the rainwater detection and conversion circuit is connected with the input end of the voltage comparison circuit L1, and the output end of the voltage comparison circuit L1 is connected with the input end of the OR gate chip 74LS 32;
the output end of the wind speed detection conversion circuit is connected with the input end of the voltage comparison circuit L2, and the output end of the voltage comparison circuit L2 is connected with the input end of the OR gate chip 74LS 32;
the output end of the room temperature detection conversion circuit is respectively connected with the input end of the voltage comparison circuit L3, the input end of the voltage comparison circuit L4 and the input end of the voltage comparison circuit L5, the output end of the voltage comparison circuit L3 is connected with the fan switch, the output end of the voltage comparison circuit L4 is connected with the input end of the AND gate chip CD4081, and the output end of the voltage comparison circuit L5 is connected with the input end of the NOT gate circuit.
4. The energy saving control circuit for adjusting indoor thermal environment according to claim 2, wherein the window voltage comparator circuit comprises a window voltage comparator circuit W1, a window voltage comparator circuit W2, a window voltage comparator circuit W3, a window voltage comparator circuit W4 and a window voltage comparator circuit W5;
the output end of the room temperature detection conversion circuit is respectively connected with the input end of the window voltage comparator circuit W1, the input end of the window voltage comparator circuit W2 and the input end of the window voltage comparator circuit W4, the output end of the window voltage comparator circuit W1 is connected with the display device, and the output ends of the window voltage comparator circuit W2 and the window voltage comparator circuit W4 are connected with the input end of the OR gate chip 74LS 32;
the output end of the outdoor temperature detection conversion circuit is respectively connected with the input end of the window voltage comparator circuit W3 and the input end of the window voltage comparator circuit W5, and the output ends of the window voltage comparator circuit W3 and the window voltage comparator circuit W5 are connected with the input end of the OR gate chip 74LS 32.
5. The energy-saving control circuit for adjusting indoor thermal environment according to claim 2, wherein the rainwater detection switching circuit, the wind speed detection switching circuit, the room temperature detection switching circuit and the outdoor temperature detection switching circuit have the same structure.
6. The energy-saving control circuit for adjusting indoor thermal environment according to claim 5, wherein the rainwater detection and conversion circuit comprises a chip DAC0832, an input end In of the chip DAC0832 is connected with an I/O port of a main control chip, a pin 20 of the chip DAC0832 is connected with a power supply, and a pin 8-Vref of the chip DAC0832 is connected with-5V voltage; the chip output port Io1 is connected with the negative electrode of the amplifier, the chip output port Io2 is respectively connected with the positive electrode of the amplifier, the chip pins 9-Rf and the ground wire, and a voltage stabilizing capacitor C1 is connected between the chip output port lo2 and the chip pins 9-Rf.
7. The energy-saving control circuit for adjusting indoor thermal environment according to claim 3, wherein the voltage comparison circuit L1, the voltage comparison circuit L2, the voltage comparison circuit L3, the voltage comparison circuit L4 and the voltage comparison circuit L5 are identical in structure.
8. The energy-saving control circuit for adjusting indoor thermal environment according to claim 7, wherein the voltage comparison circuit L1 comprises an LM393N voltage comparator and resistors R1, rx1 and Rx2, the LM393N voltage comparator is connected to a power supply, a positive input terminal of the LM393N voltage comparator is connected to an output terminal of the conversion circuit, a negative input terminal of the LM393N voltage comparator is sequentially connected to the resistor Rx2 and the resistor R1, a voltage source is connected between the resistor Rx2 and the resistor R1, and a negative input terminal of the LM393N voltage comparator is grounded through Rx 1.
9. The energy saving control circuit for adjusting indoor thermal environment according to claim 4, wherein the window voltage comparator circuit W1, the window voltage comparator circuit W2, the window voltage comparator circuit W3, the window voltage comparator circuit W4 and the window voltage comparator circuit W5 are identical in structure.
10. The energy-saving control circuit for adjusting indoor thermal environment according to claim 9, wherein the window voltage comparator circuit W1 comprises LM393N voltage comparators A1, LM393N voltage comparator A2, resistor R3, resistor Rx4, resistor Rx5, diode D1, diode D2 and zener diode DZ, the output end of the conversion circuit is connected to the forward input end of LM393N voltage comparator A1 and the reverse input end of LM393N voltage comparator A2, LM393N voltage comparator A1 is connected to the power supply, resistor Rx3, resistor Rx4 and resistor Rx5 are connected in series, the reverse input end of LM393N voltage comparator A1 is connected between resistor Rx3 and resistor Rx4, the forward input end of LM393N voltage comparator A2 is connected between resistor Rx4 and resistor Rx5, the output end of LM393N voltage comparator A2 is connected to resistor R2 through diode D1, and the output end of LM393N voltage comparator A2 is connected to the ground through resistor R2 and resistor R3.
CN202320474865.6U 2023-03-13 2023-03-13 Energy-saving control circuit for adjusting indoor thermal environment Active CN219418024U (en)

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