CN209606862U - An intelligent temperature and humidity controller - Google Patents

Abstract

The utility model discloses an intelligent temperature and humidity controller, which comprises a main control chip, a cooling drive circuit, a heating drive circuit, a fan drive circuit, a temperature and humidity detection circuit, and a power supply circuit; The input end of the drive circuit, the input end of the heating drive circuit, and the input end of the fan drive circuit are electrically connected; the output end of the power supply circuit is respectively connected to the power end of the main control chip, the power end of the cooling drive circuit, and the heating drive The power supply end of the circuit and the power supply end of the fan driving circuit are connected. The utility model can set an intelligent temperature and humidity controller in the intelligent terminal box of the distribution network, which can detect the temperature and humidity of the internal environment of the intelligent terminal box of the distribution network in real time, and give an alarm. The thermal drive circuit intelligently controls the cooling and dehumidification device, and then controls the temperature and humidity of the internal environment of the distribution network intelligent terminal box within a reasonable range.

Description

An intelligent temperature and humidity controller

technical field

The utility model relates to the technical field of intelligent equipment, in particular to an intelligent temperature and humidity controller.

Background technique

The intelligent controller of the distribution network automatic switch is mainly used for the real-time monitoring and control of the pole-mounted switch and the ring network switchgear of the medium and low voltage distribution lines. At present, the outdoor distribution network intelligent terminal box on the market does not have the function of temperature and humidity control. In actual operating conditions, the intelligent controller of the distribution network automation switch is generally installed on the outdoor overhead pole. After direct sunlight, the temperature of the box body exceeds its normal temperature. Working temperature, the high temperature of the box seriously affects the operation of the electronic components inside the distribution network intelligent terminal box, greatly shortening the service life. At the same time, there is no dehumidification device in the box, and rainy or humid weather will easily lead to extremely high humidity in the box, which will seriously corrode the circuits and components of the intelligent controller. At present, there is no distribution network intelligent terminal box with temperature and humidity control function for the outdoor distribution network automation switch FTU. The traditional air conditioner is not suitable for such micro devices due to its large size. Therefore, it is necessary to design a belt that meets the actual needs of production. Distribution network intelligent terminal box with temperature and humidity control function.

Utility model content

In order to solve the problem that the distribution network intelligent terminal box cannot automatically adjust the temperature and humidity inside the box body, the utility model provides an intelligent temperature and humidity controller, which can detect the environment temperature and humidity, and automatically adjust the internal environment of the distribution network intelligent terminal box temperature humidity.

In order to achieve the purpose of the utility model above, the technical solution adopted is as follows: an intelligent temperature and humidity controller, including a main control chip, a cooling drive circuit, a heating drive circuit, a fan drive circuit, a temperature and humidity detection circuit, and a power supply circuit; The output end of the main control chip is electrically connected to the input end of the cooling drive circuit, the input end of the heating drive circuit, and the input end of the fan drive circuit; the output end of the power circuit is respectively connected to the power end of the main control chip, the cooling The power supply end of the drive circuit, the power supply end of the heating drive circuit, and the power supply end of the fan drive circuit are connected.

Preferably, it also includes an alarm circuit, a date and time circuit module, a display circuit module, and a button input circuit module; the input end of the main control chip is electrically connected to the output end of the temperature and humidity detection circuit; the input end of the alarm circuit is connected to the The output end of the main control chip is electrically connected; the output end of the date and time circuit module is electrically connected to the input end of the main control chip; the input end of the display circuit module is electrically connected to the output end of the main control chip; The output end of the button input circuit module is electrically connected to the input end of the main control chip; the output end of the power supply circuit is electrically connected to the power end of the alarm circuit, the power end of the date and time circuit module, and the power end of the display circuit module. connect.

Further, the main control chip adopts an AT89C51 single-chip microcomputer, and the periphery of the main control chip is connected with a minimum system of a single-chip microcomputer.

Furthermore, the refrigeration drive circuit includes a light emitting diode D3, a diode D4, a relay J5, a resistor R2, a transistor Q2, and a resistor R5; the base of the transistor Q2 is connected to the IO port P1.1 of the main control chip through a resistor R5 ; The IO port P1.1 of the main control chip is connected to a 1K pull-up resistor; the collector of the triode Q2 is grounded; the emitter of the triode Q2 is respectively connected to the negative pole of the relay J5, the positive pole of the diode D4, and one end of the resistor R2 Connect; the positive pole of the relay J5 is connected to the output end of the power supply circuit, and the normally closed contact and the normally open contact of the relay J2 are used to connect the pins of the semiconductor refrigeration sheet; the negative pole of the diode D4 is connected to the output end of the power supply circuit; The other end of the resistor R2 is connected to the cathode of the light emitting diode D3, and the anode of the light emitting diode D3 is connected to the output end of the power supply circuit.

Furthermore, the heating driving circuit includes a light emitting diode D5, a diode D6, a relay J6, a resistor R3, a transistor Q3, and a resistor R6; the base of the transistor Q3 is connected to the IO port P1.2 of the main control chip through the resistor R6 connection; the IO port P1.2 of the main control chip is connected to a 1K pull-up resistor; the collector of the triode Q3 is grounded; the emitter of the triode Q3 is connected to the negative pole of the relay J6, the positive pole of the diode D6, and the resistor R3 respectively. One end is connected; the positive pole of the relay J6 is connected to the output end of the power circuit, and the normally closed contact and the normally open contact of the relay J6 are used to connect the pins of the PTC heating sheet; the negative pole of the diode D6 is connected to the output end of the power circuit ; The other end of the resistor R3 is connected to the negative pole of the light emitting diode D5, and the positive pole of the light emitting diode D5 is connected to the output end of the power supply circuit.

Still further, the fan drive circuit includes a light emitting diode D1, a diode D2, a relay J4, a resistor R1, a transistor Q1, and a resistor R4; the base of the transistor Q1 is connected to the IO port P1.0 of the main control chip through the resistor R4 ; The IO port P1.0 of the main control chip is connected to a 1K pull-up resistor; the collector of the triode Q1 is grounded; the emitter of the triode Q1 is respectively connected to the negative pole of the relay J4, the positive pole of the diode D2, and one end of the resistor R1 connection; the positive pole of the relay J4 is connected to the output end of the power circuit, and the normally closed contact and the normally open contact of the relay J4 are used to connect the pins of the fan; the negative pole of the diode D2 is connected to the output end of the power circuit; the The other end of the resistor R1 is connected to the cathode of the light emitting diode D1, and the anode of the light emitting diode D1 is connected to the output end of the power supply circuit.

Still further, the temperature and humidity detection circuit includes a temperature and humidity sensor and a resistor R9; pin 1 of the temperature and humidity sensor is connected to the output end of the power supply circuit; pin 2 of the temperature and humidity sensor is connected to the power supply circuit after passing through the resistor R9 The output terminal of the temperature and humidity sensor; the 3 pins of the temperature and humidity sensor are connected to the IO port P2.5 of the main control chip; the 4 pins of the temperature and humidity sensor are grounded. The temperature and humidity sensor described in the utility model adopts a model of SHT11 temperature and humidity sensor, which is produced by Swiss Shengshi Ruien Company.

Still further, the alarm circuit includes a buzzer U2, a switch, a transistor Q4, and a resistor R14; one end of the buzzer U2 is connected to the output end of the power circuit through a switch; the other end of the buzzer is connected to a transistor The emitter of Q4; the collector of the triode Q4 is grounded, and the base of the triode Q4 is connected to the IO port P2.4 of the main control chip through a resistor R14; the IO port P2.4 of the main control chip is externally connected to a 1K pull-up resistor.

Still further, the display circuit module includes an LCD display, a resistor R11, and a resistor R12; pin 16 and pin 1 of the LCD display are grounded; pin 1 of the LCD display is connected to resistor R12, resistor R11, and The output end of the power circuit; 2 pins and 15 pins of the LCD display are respectively connected to the output of the power circuit; the 3 pins of the LCD display are connected between the resistor R12 and the resistor R11; the LCD display's 6 pins are connected to the IO port P2.6 of the main control chip, and 4 pins of the LCD display are connected to the IO port P2.7 of the main control chip; the LCD display used in the utility model adopts a character type liquid crystal display module LCD, and the model is 1602A.

The 7 pins of the LCD display are connected to the IO port P0.7 of the main control chip;

The 8 pins of the LCD display are connected to the IO port P0.6 of the main control chip;

The 9 pins of the LCD display are connected to the IO port P0.5 of the main control chip;

The 10 pins of the LCD display are connected to the IO port P0.4 of the main control chip;

The 11 pins of the LCD display are connected to the IO port P0.3 of the main control chip;

The 12 pins of the LCD display are connected to the IO port P0.2 of the main control chip;

The 13 pins of the LCD display are connected to the IO port P0.1 of the main control chip;

The 14 pins of the LCD display are connected to the IO port P0.0 of the main control chip.

The 7 pins, 8 pins, 9 pins, 10 pins, 11 pins, 12 pins, 13 pins and 14 pins of the LCD display are respectively externally connected with 1K pull-up resistors.

Still further, the key input circuit module includes a key S1, a key S2, a key S3, and a key S4;

One end of the button S1 is grounded, and the other end of the button S1 is connected to the IO port P2.0 of the main control chip;

One end of the button S2 is grounded, and the other end of the button S2 is connected to the IO port P2.1 of the main control chip;

One end of the button S3 is grounded, and the other end of the button S3 is connected to the IO port P2.2 of the main control chip;

One end of the button S4 is grounded, and the other end of the button S4 is connected to the IO port P2.3 of the main control chip.

The main function of the button input circuit module of the utility model is to set the preset temperature and humidity threshold of the main control chip. The button S1 has the function of starting or determining, starting to set the temperature and humidity threshold or determining the temperature and humidity threshold; press the Press the button S2 to decrease the temperature and humidity threshold by 1; press the button S3 to increase the temperature and humidity threshold by 1; the button S4 has a selection function for selecting whether to set the upper limit or the lower limit of the temperature and humidity threshold.

The display circuit module of the utility model displays the time of the date and time circuit module through the LCD display, and displays the temperature and humidity values detected by the temperature and humidity detection circuit in real time, and also displays the temperature and humidity set by the key input circuit module threshold. When the temperature is too high alarm, the LCD display will display "temperature is too high", when the humidity is too high alarm, the LCD display will display "humidity is too high".

The utility model is also provided with a date and time circuit module, and the date and time circuit module includes a crystal oscillator CY1 and a real-time clock chip DS1302; one end of the crystal oscillator CY1 is connected to 2 pins of the real-time clock chip DS1302, and the other end of the crystal oscillator CY1 is connected to the real-time clock 3 pins of the chip DS1302; 1 pin of the real-time clock chip DS1302 is connected to the output end of the power circuit, 4 pins of the real-time clock chip DS1302 are grounded, and 5 pins of the real-time clock chip DS1302 are connected to the IO port P1 of the main control chip .5, 6 pins of the real-time clock chip DS1302 are connected to the IO port P1.6 of the main control chip, and 7 pins of the real-time clock chip DS1302 are connected to the IO port P1.7 of the main control chip; the IO port P1 of the main control chip .5, P1.6, and P1.7 are respectively connected with 1K pull-up resistors. The date and time circuit module of the utility model is used for real-time timing, and displays the time through the display circuit module.

The power supply circuit of the utility model includes a power converter, the power supply circuit is externally connected to a battery, and the power converter converts the voltage of the battery into a main control chip, a temperature and humidity detection circuit, an alarm circuit, a date and time circuit module, and a display circuit module Provide the required voltage. The battery is arranged inside the distribution network intelligent terminal box.

The temperature and humidity detection circuit of the utility model detects the ambient temperature and humidity inside the distribution network intelligent terminal box in real time, and transmits the detected signal to the main control chip for processing and judgment. It is transmitted to the alarm circuit for alarm. At the same time, if it is detected that the ambient temperature exceeds the upper threshold, the main control chip controls the cooling drive circuit to make the semiconductor cooling chip work, and at the same time controls the corresponding fan drive circuit to work. When it is detected that the ambient temperature is lower than the lower limit threshold, the main control chip controls the cooling drive circuit to stop the work of the semiconductor cooling chip. When it is detected that the ambient humidity exceeds the upper limit threshold, the main control chip controls the heating drive circuit to make the PTC heating element work, and at the same time controls the corresponding fan drive circuit to work; when it detects that the ambient humidity is lower than the lower limit threshold, the main control chip controls the The thermal drive circuit stops the PTC heating sheet from working.

The semiconductor refrigerating sheet, the PTC heating sheet, and the fan are arranged in a cooling and dehumidifying device, and the fan includes a first fan and a second fan; Protective shell, second protective shell set on the outer side of the distribution network intelligent terminal box, semiconductor cooling sheet, PTC heating sheet, first fan, second fan, heat shield, heating radiator, cooling radiator, radiator ; One side of the distribution network intelligent terminal box is provided with a through hole; the first protective shell and the second protective shell are fixedly connected through the through hole; one end of the first protective shell is provided with a first through hole, and the other end A second through hole is provided; the top of the first protective shell is fixed with a first fan, the middle of the first protective shell is fixed with a heating radiator, and the lower end of the first protective shell is fixed with a cooling radiator; the PTC heating fin is set On the back of the heating radiator, a layer of silica gel structure is set between the PTC heating sheet and the heating radiator; the other side of the PTC heating sheet is provided with a connecting heat shield, and the other side of the heat shield is fixed on the distribution network One side of the interior of the intelligent terminal box; the semiconductor cooling sheet is arranged on the back of the cooling heat sink; a layer of silica gel structure is arranged between the semiconductor cooling sheet and the cooling cooling sheet, and the other side of the semiconductor cooling sheet is provided with a connecting heat sink; The heat sink and the second fan are arranged in the second protective shell, and the second fan is connected to the other side of the heat sink; the second protective shell is provided with ventilation holes.

The PTC heating sheet and the semiconductor cooling sheet are connected to a voltage of 12V. The 12V voltage is provided by the intelligent terminal box of the distribution network. The power supply is converted to 12V by a power converter. This is common knowledge in the art and will not be described in detail here. When the semiconductor cooling chip is working, the first fan and the second fan are working, and the cold air generated by the semiconductor cooling chip is blown out through the first through hole through the first fan to reduce the internal temperature of the distribution network intelligent terminal box. The second fan sends the hot air generated by the semiconductor cooling sheet to the outside through the ventilation holes on the second protective shell. When the PTC heating sheet works, the first fan works, and the first fan blows out the hot air generated by the PTC heating sheet through the first through hole, reducing the humidity inside the distribution network intelligent terminal box.

A third through hole is provided on one side of the distribution network intelligent terminal box, and the third through hole is arranged below the cooling and dehumidifying device. Below the three through holes, the baffle plate is used to connect the condensed water produced by the semiconductor refrigeration chip after cooling; the third through hole is used to drain the condensed water produced by the semiconductor refrigeration chip after cooling.

The beneficial effects of the utility model are as follows:

1. The utility model can set an intelligent temperature and humidity controller in the distribution network intelligent terminal box, which can detect the temperature and humidity of the internal environment of the distribution network intelligent terminal box in real time, and give an alarm. The most important thing is that it can pass the cooling drive circuit , The heating drive circuit intelligently controls the cooling and dehumidification device, and then controls the temperature and humidity of the internal environment of the distribution network intelligent terminal box within a reasonable range.

2. The utility model can manually set the lower and upper limit thresholds of the temperature and the lower and upper limit thresholds of the humidity, which can be used in different environments and is more flexible and convenient to use.

Description of drawings

Fig. 1 is a structural diagram of an intelligent temperature and humidity controller in this embodiment.

Fig. 2 is a circuit diagram of the main control chip described in this embodiment.

Fig. 3 is a circuit diagram of the fan drive circuit and the refrigeration drive circuit in this embodiment.

Fig. 4 is a circuit diagram of the heating drive circuit in this embodiment.

Fig. 5 is a circuit diagram of the temperature and humidity detection circuit, alarm circuit, date and time circuit module, display circuit module, and key input circuit module of the temperature and humidity alarm system of this embodiment.

Fig. 6 is a schematic structural diagram of the cooling and dehumidifying device described in this embodiment.

Fig. 7 is a schematic diagram of the installation of the cooling and dehumidifying device in this embodiment.

In the figure, 1-PTC heating sheet, 2-semiconductor cooling sheet, 3-first fan, 4-heating radiator, 5-cooling radiator, 6-radiating sheet, 7-second fan, 8-first protection Shell, 9-first through hole, 10-heat shield, 11-second protective shell, 12-ventilation hole, 13-baffle plate, 14-third through hole, 15-distribution network intelligent terminal box.

Detailed ways

The utility model is described in detail below in conjunction with accompanying drawings and specific embodiments.

Example 1

As shown in Figure 1, a kind of intelligent temperature and humidity controller comprises main control chip, cooling drive circuit, heating drive circuit, fan drive circuit, temperature and humidity detection circuit, power supply circuit; The input end of the cooling drive circuit, the input end of the heating drive circuit, and the input end of the fan drive circuit are electrically connected; the output end of the power supply circuit is respectively connected to the power end of the main control chip, the power end of the cooling drive circuit, The power end of the drive circuit and the power end of the fan drive circuit are connected.

As shown in Figure 5, it also includes an alarm circuit, a date and time circuit module, a display circuit module, and a button input circuit module; the input end of the main control chip is electrically connected with the output end of the temperature and humidity detection circuit; The input end is electrically connected to the output end of the main control chip; the output end of the date and time circuit module is electrically connected to the input end of the main control chip; the input end of the display circuit module is electrically connected to the output end of the main control chip connected; the output end of the button input circuit module is electrically connected to the input end of the main control chip; the output end of the power supply circuit is respectively connected to the power end of the alarm circuit, the power end of the date and time circuit module, and the power supply of the display circuit module terminal electrical connections.

As shown in Figure 2, the main control chip adopts AT89C51 single-chip microcomputer, and the periphery of the main control chip is connected with a minimum system of single-chip microcomputer.

As shown in Fig. 2 and Fig. 3, the refrigeration drive circuit includes a light-emitting diode D3, a diode D4, a relay J5, a resistor R2, a triode Q2, and a resistor R5; the base of the triode Q2 is connected to the IO of the main control chip through the resistor R5 Port P1.1 is connected; the IO port P1.1 of the main control chip is connected to a 1K pull-up resistor; the collector of the triode Q2 is grounded; the emitter of the triode Q2 is respectively connected to the negative pole of the relay J5 and the positive pole of the diode D4 , one end of resistance R2 is connected; the positive pole of the relay J5 is connected to the output end of the power supply circuit, the normally closed contact and the normally open contact of the relay J2 are used to connect the pins of the semiconductor refrigeration sheet; the negative pole of the diode D4 is connected to the power supply The output end of the circuit; the other end of the resistor R2 is connected to the cathode of the light-emitting diode D3, and the anode of the light-emitting diode D3 is connected to the output end of the power supply circuit.

As shown in Figure 2 and Figure 4, the heating drive circuit includes a light-emitting diode D5, a diode D6, a relay J6, a resistor R3, a transistor Q3, and a resistor R6; the base of the transistor Q3 is connected to the main control chip through the resistor R6 The IO port P1.2 is connected; the IO port P1.2 of the main control chip is connected to a 1K pull-up resistor; the collector of the triode Q3 is grounded; the emitter of the triode Q3 is connected to the negative pole of the relay J6 and the diode D6 respectively. The positive pole and one end of the resistor R3 are connected; the positive pole of the relay J6 is connected to the output end of the power circuit, and the normally closed contact and the normally open contact of the relay J6 are used to connect the pins of the PTC heating sheet; the negative pole of the diode D6 is connected to The output end of the power supply circuit; the other end of the resistor R3 is connected to the cathode of the light emitting diode D5, and the anode of the light emitting diode D5 is connected to the output end of the power supply circuit.

As shown in Fig. 2 and Fig. 2, the fan drive circuit includes a light-emitting diode D1, a diode D2, a relay J4, a resistor R1, a triode Q1, and a resistor R4; the base of the triode Q1 is connected to the IO of the main control chip through the resistor R4. Port P1.0 is connected; the IO port P1.0 of the main control chip is connected to a 1K pull-up resistor; the collector of the triode Q1 is grounded; the emitter of the triode Q1 is respectively connected to the negative pole of the relay J4 and the positive pole of the diode D2 , one end of the resistor R1 is connected; the positive pole of the relay J4 is connected to the output end of the power supply circuit, and the normally closed contact and the normally open contact of the relay J4 are used to connect the pins of the fan; the negative pole of the diode D2 is connected to the power supply circuit Output end; the other end of the resistor R1 is connected to the cathode of the light emitting diode D1, and the anode of the light emitting diode D1 is connected to the output end of the power supply circuit.

As shown in Figure 5, the temperature and humidity detection circuit includes a temperature and humidity sensor and a resistor R9; 1 pin of the temperature and humidity sensor is connected to the output end of the power supply circuit; 2 pins of the temperature and humidity sensor are connected after the resistor R9 The output end of the power circuit; the 3 pins of the temperature and humidity sensor are connected to the IO port P2.5 of the main control chip; the 4 pins of the temperature and humidity sensor are grounded. The temperature and humidity sensor described in the utility model adopts a model of SHT11 temperature and humidity sensor, which is produced by Swiss Shengshi Ruien Company.

As shown in Figure 5, the alarm circuit includes a buzzer U2, a switch, a transistor Q4, and a resistor R14; one end of the buzzer U2 is connected to the output end of the power supply circuit through a switch; the other end of the buzzer Connected to the emitter of the triode Q4; the collector of the triode Q4 is grounded, and the base of the triode Q4 is connected to the IO port P2.4 of the main control chip through the resistor R14; the IO port P2.4 of the main control chip is externally connected to a 1K pull-up resistance.

As shown in Figure 5, described display circuit module comprises LCD display, resistance R11, resistance R12; 16 pins, 1 pin of described LCD display are all grounded; 1 pin of described LCD display connects resistance R12, resistance R11, the output terminal of the power supply circuit; 2 pins and 15 pins of the LCD display are respectively connected to the output terminals of the power supply circuit; 3 pins of the LCD display are connected between the resistor R12 and the resistor R11; the LCD 6 pins of the display are connected to the IO port P2.6 of the main control chip, and 4 pins of the LCD display are connected to the IO port P2.7 of the main control chip; the LCD display adopted by the utility model adopts a character type liquid crystal display module LCD, The model number is 1602A.

The 7 pins of the LCD display are connected to the IO port P0.7 of the main control chip;

The 8 pins of the LCD display are connected to the IO port P0.6 of the main control chip;

The 9 pins of the LCD display are connected to the IO port P0.5 of the main control chip;

The 10 pins of the LCD display are connected to the IO port P0.4 of the main control chip;

The 11 pins of the LCD display are connected to the IO port P0.3 of the main control chip;

The 12 pins of the LCD display are connected to the IO port P0.2 of the main control chip;

The 13 pins of the LCD display are connected to the IO port P0.1 of the main control chip;

The 14 pins of the LCD display are connected to the IO port P0.0 of the main control chip.

The 7 pins, 8 pins, 9 pins, 10 pins, 11 pins, 12 pins, 13 pins and 14 pins of the LCD display are respectively externally connected with 1K pull-up resistors.

As shown in Figure 5, described key input circuit module comprises key S1, key S2, key S3, key S4;

One end of the button S1 is grounded, and the other end of the button S1 is connected to the IO port P2.0 of the main control chip;

One end of the button S2 is grounded, and the other end of the button S2 is connected to the IO port P2.1 of the main control chip;

One end of the button S3 is grounded, and the other end of the button S3 is connected to the IO port P2.2 of the main control chip;

One end of the button S4 is grounded, and the other end of the button S4 is connected to the IO port P2.3 of the main control chip.

The main function of the button input circuit module of the utility model is to set the preset temperature and humidity threshold of the main control chip. The button S1 has the function of starting or determining, starting to set the temperature and humidity threshold or determining the temperature and humidity threshold; press the Press the button S2 to decrease the temperature and humidity threshold by 1; press the button S3 to increase the temperature and humidity threshold by 1; the button S4 has a selection function for selecting whether to set the upper limit or the lower limit of the temperature and humidity threshold.

The display circuit module of the utility model displays the time of the date and time circuit module through the LCD display, and displays the temperature and humidity values detected by the temperature and humidity detection circuit in real time, and also displays the temperature and humidity set by the key input circuit module threshold. When the temperature is too high alarm, the LCD display will display "temperature is too high", when the humidity is too high alarm, the LCD display will display "humidity is too high".

The utility model is also provided with a date and time circuit module, and the date and time circuit module includes a crystal oscillator CY1 and a real-time clock chip DS1302; one end of the crystal oscillator CY1 is connected to 2 pins of the real-time clock chip DS1302, and the other end of the crystal oscillator CY1 is connected to the real-time clock 3 pins of the chip DS1302; 1 pin of the real-time clock chip DS1302 is connected to the output end of the power circuit, 4 pins of the real-time clock chip DS1302 are grounded, and 5 pins of the real-time clock chip DS1302 are connected to the IO port P1 of the main control chip .5, 6 pins of the real-time clock chip DS1302 are connected to the IO port P1.6 of the main control chip, and 7 pins of the real-time clock chip DS1302 are connected to the IO port P1.7 of the main control chip; the IO port P1 of the main control chip .5, P1.6, and P1.7 are respectively connected with 1K pull-up resistors. The date and time circuit module of the utility model is used for real-time timing, and displays the time through the display circuit module.

The power supply circuit of the utility model includes a power converter, the power supply circuit is externally connected to a battery, and the power converter converts the voltage of the battery into a main control chip, a temperature and humidity detection circuit, an alarm circuit, a date and time circuit module, and a display circuit module Provide the required voltage. The battery is arranged inside the distribution network intelligent terminal box.

The temperature and humidity detection circuit of the utility model detects the ambient temperature and humidity inside the distribution network intelligent terminal box in real time, and transmits the detected signal to the main control chip for processing and judgment. It is transmitted to the alarm circuit for alarm. At the same time, if it is detected that the ambient temperature exceeds the upper threshold, the main control chip controls the cooling drive circuit to make the semiconductor cooling chip work, and at the same time controls the corresponding fan drive circuit to work. When it is detected that the ambient temperature is lower than the lower limit threshold, the main control chip controls the cooling drive circuit to stop the work of the semiconductor cooling chip. When it is detected that the ambient humidity exceeds the upper limit threshold, the main control chip controls the heating drive circuit to make the PTC heating element work, and at the same time controls the corresponding fan drive circuit to work; when it detects that the ambient humidity is lower than the lower limit threshold, the main control chip controls the The thermal drive circuit stops the PTC heating sheet from working.

The semiconductor refrigerating sheet, the PTC heating sheet, and the fan are arranged in a cooling and dehumidifying device, and the fan includes a first fan and a second fan; Protective shell 8, second protective shell 11 arranged on the outer side of the distribution network intelligent terminal box, semiconductor cooling sheet 2, PTC heating sheet 1, first fan 3, second fan 7, heat insulation board 10, heating and cooling fins 4. Cooling fins 5 and 6; one side of the distribution network intelligent terminal box 15 is provided with a through hole; the first protective shell 8 and the second protective shell 11 are fixedly connected through the through hole; the first One end of the protective shell 8 is provided with a first through hole 9, and the other end is provided with a second through hole, the top of the first protective shell 8 is fixedly provided with a first fan 3, and the middle part of the first protective shell 8 is fixedly provided with a heating radiator 4 , the lower end of the first protective shell 8 is fixedly provided with a cooling fin 5; the PTC heating fin 1 is arranged on the back of the heating fin 4, and a layer of silica gel structure is arranged between the PTC heating fin 1 and the heating fin 4; the PTC The other side of the heating sheet 1 is provided with a heat insulation board 10, and the other side of the heat insulation board 10 is fixed on the side surface of the distribution network intelligent terminal box 15; the semiconductor refrigeration sheet 2 is arranged on the cooling fin 5 The back of the semiconductor refrigeration sheet 2 and the refrigeration heat sink 5 are provided with a layer of silica gel structure, and the other side of the semiconductor refrigeration sheet 2 is provided with a connecting heat sink 6; the heat dissipation sheet 6 and the second fan 7 are arranged in the second protective shell 11 , the second fan 7 is connected to the other side of the heat sink 6 ; the second protective shell 11 is provided with a ventilation hole 12 .

The PTC heating sheet 1 and the semiconductor cooling sheet 2 are connected to an average voltage of 12V. The 12V voltage is provided by a distribution network intelligent terminal box, and the power supply is converted to 12V by a power converter. This is common knowledge in the art and will not be detailed here. describe. When the semiconductor cooling chip 2 is working, the first fan 3 and the second fan 7 are working, and the cold air generated by the semiconductor cooling chip 2 is blown out through the first through hole 9 through the action of the first fan 3 to make the distribution network intelligent. The temperature inside the terminal box 15 decreases; the second fan 7 sends the hot air generated by the semiconductor cooling chip 2 to the outside through the ventilation holes 12 on the second protective shell 11 . When the PTC heating sheet 1 works, the first fan 3 works, and the first fan 3 blows the hot air generated by the PTC heating sheet 1 through the first through hole 9, so that the internal humidity of the distribution network intelligent terminal box 15 is reduced.

The model of the PTC heating chip is 12V60C2-8W, the rated voltage is 12V AC and DC, the constant temperature is 60°C, and the temperature can be adjusted by adjusting the voltage; the model of the semiconductor cooling chip is TEC1-12706, and the internal resistance is 2.1-2.5 ohms. The maximum temperature difference is above 60°C, the maximum operating current is 5.8A, and the rated voltage is DC12V.

A third through hole 14 is provided on one side of the distribution network intelligent terminal box 15, and the third through hole 14 is arranged below the cooling fin 5. The utility model also includes a baffle 13, and the baffle 13 The baffle plate 13 is used to connect the condensed water produced after the cooling of the semiconductor cooling chip 2; condensation.

Apparently, the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limiting the implementation manner of the present utility model. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (10)

1. A kind of intelligent temperature and humidity controller, it is characterized in that: comprise main control chip, refrigeration drive circuit, heating drive circuit, fan drive circuit, temperature and humidity detection circuit, power supply circuit; The output terminal of described main control chip is connected with respectively The input end of the cooling drive circuit, the input end of the heating drive circuit, and the input end of the fan drive circuit are electrically connected; the output end of the power supply circuit is respectively connected to the power end of the main control chip, the power end of the cooling drive circuit, The power end of the drive circuit and the power end of the fan drive circuit are connected. 2. The intelligent temperature and humidity controller according to claim 1 is characterized in that: it also includes an alarm circuit, a date and time circuit module, a display circuit module, and a button input circuit module; the input terminal of the main control chip is connected to the temperature and humidity detection The output end of the circuit is electrically connected; the input end of the alarm circuit is electrically connected to the output end of the main control chip; the output end of the date and time circuit module is electrically connected to the input end of the main control chip; the display circuit The input end of the module is electrically connected to the output end of the main control chip; the output end of the key input circuit module is electrically connected to the input end of the main control chip; the output end of the power circuit is respectively connected to the power end of the alarm circuit, The power supply terminal of the date and time circuit module and the power supply terminal of the display circuit module are electrically connected. 3. The intelligent temperature and humidity controller according to claim 2, characterized in that: said main control chip adopts AT89C51 single-chip microcomputer, and the periphery of said main control chip is connected with a minimum system of single-chip microcomputer. 4. The intelligent temperature and humidity controller according to claim 3, characterized in that: the refrigeration drive circuit includes a light-emitting diode D3, a diode D4, a relay J5, a resistor R2, a triode Q2, and a resistor R5; the base of the triode Q2 pole is connected to the IO port P1.1 of the main control chip through a resistor R5; the IO port P1.1 of the main control chip is connected to a 1K pull-up resistor; the collector of the triode Q2 is grounded; the emitters of the triode Q2 are respectively Connect with the negative pole of the relay J5, the positive pole of the diode D4, and one end of the resistor R2; the positive pole of the relay J5 is connected to the output terminal of the power supply circuit, and the normally closed contact and the normally open contact of the relay J2 are used to connect the lead of the semiconductor refrigeration sheet pin; the cathode of the diode D4 is connected to the output end of the power supply circuit; the other end of the resistor R2 is connected to the cathode of the light-emitting diode D3, and the anode of the light-emitting diode D3 is connected to the output end of the power supply circuit. 5. The intelligent temperature and humidity controller according to claim 3, characterized in that: the heating drive circuit includes a light-emitting diode D5, a diode D6, a relay J6, a resistor R3, a transistor Q3, and a resistor R6; The base is connected to the IO port P1.2 of the main control chip through a resistor R6; the IO port P1.2 of the main control chip is connected to a 1K pull-up resistor; the collector of the triode Q3 is grounded; the emitter of the triode Q3 Connect with the negative pole of relay J6, the positive pole of diode D6, and one end of resistor R3 respectively; pin; the cathode of the diode D6 is connected to the output end of the power supply circuit; the other end of the resistor R3 is connected to the cathode of the light emitting diode D5, and the anode of the light emitting diode D5 is connected to the output end of the power supply circuit. 6. The intelligent temperature and humidity controller according to claim 3, characterized in that: the fan drive circuit includes a light-emitting diode D1, a diode D2, a relay J4, a resistor R1, a triode Q1, and a resistor R4; the base of the triode Q1 pole is connected to the IO port P1.0 of the main control chip through a resistor R4; the IO port P1.0 of the main control chip is connected to a 1K pull-up resistor; the collector of the triode Q1 is grounded; the emitters of the triode Q1 are respectively Connect with the negative pole of the relay J4, the positive pole of the diode D2, and one end of the resistor R1; the positive pole of the relay J4 is connected to the output terminal of the power supply circuit, and the normally closed contact and the normally open contact of the relay J4 are used to connect the pins of the fan; The cathode of the diode D2 is connected to the output end of the power supply circuit; the other end of the resistor R1 is connected to the cathode of the light emitting diode D1, and the anode of the light emitting diode D1 is connected to the output end of the power supply circuit. 7. The intelligent temperature-humidity controller according to claim 3, characterized in that: the temperature-humidity detection circuit comprises a temperature-humidity sensor and a resistor R9; pin 1 of the temperature-humidity sensor is connected to the output end of the power supply circuit; The 2 pins of the temperature and humidity sensor are connected to the output end of the power circuit through the resistor R9; the 3 pins of the temperature and humidity sensor are connected to the IO port P2.5 of the main control chip; the 4 pins of the temperature and humidity sensor are grounded. 8. The intelligent temperature and humidity controller according to claim 3, characterized in that: the alarm circuit includes a buzzer U2, a switch, a transistor Q4, and a resistor R14; one end of the buzzer U2 is connected to the power circuit through a switch The other end of the buzzer is connected to the emitter of the triode Q4; the collector of the triode Q4 is grounded, and the base of the triode Q4 is connected to the IO port P2.4 of the main control chip through a resistor R14; The IO port P2.4 of the main control chip is connected with an external 1K pull-up resistor. 9. The intelligent temperature and humidity controller according to claim 3, wherein: the display circuit module includes an LCD display, a resistor R11, and a resistor R12; 16 pins and 1 pin of the LCD display are all grounded; The 1 pin of the LCD display is connected to the output end of the resistor R12, the resistor R11, and the power circuit in turn; the 2 pins and the 15 pins of the LCD display are respectively connected to the output of the power circuit; the 3 pins of the LCD display Connected between the resistor R12 and the resistor R11; the 6 pins of the LCD display are connected to the IO port P2.6 of the main control chip, and the 4 pins of the LCD display are connected to the IO port P2.7 of the main control chip; The 7 pins of the LCD display are connected to the IO port P0.7 of the main control chip; The 8 pins of the LCD display are connected to the IO port P0.6 of the main control chip; The 9 pins of the LCD display are connected to the IO port P0.5 of the main control chip; The 10 pins of the LCD display are connected to the IO port P0.4 of the main control chip; The 11 pins of the LCD display are connected to the IO port P0.3 of the main control chip; The 12 pins of the LCD display are connected to the IO port P0.2 of the main control chip; The 13 pins of the LCD display are connected to the IO port P0.1 of the main control chip; The 14 pins of the LCD display are connected to the IO port P0.0 of the main control chip; The 7 pins, 8 pins, 9 pins, 10 pins, 11 pins, 12 pins, 13 pins, and 14 pins of the LCD display are respectively externally connected with 1K pull-up resistors. 10. The intelligent temperature and humidity controller according to claim 3, characterized in that: the key input circuit module includes a key S1, a key S2, a key S3, and a key S4; One end of the button S1 is grounded, and the other end of the button S1 is connected to the IO port P2.0 of the main control chip; One end of the button S2 is grounded, and the other end of the button S2 is connected to the IO port P2.1 of the main control chip; One end of the button S3 is grounded, and the other end of the button S3 is connected to the IO port P2.2 of the main control chip; One end of the button S4 is grounded, and the other end of the button S4 is connected to the IO port P2.3 of the main control chip.