CN210426616U - Automatic temperature and humidity detection system for agricultural greenhouse - Google Patents
Automatic temperature and humidity detection system for agricultural greenhouse Download PDFInfo
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- CN210426616U CN210426616U CN201920675432.0U CN201920675432U CN210426616U CN 210426616 U CN210426616 U CN 210426616U CN 201920675432 U CN201920675432 U CN 201920675432U CN 210426616 U CN210426616 U CN 210426616U
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Abstract
The utility model provides an agricultural greenhouse's humiture automatic check out system, is provided with singlechip host system, humiture detection module, liquid crystal display module, threshold setting module, alarm processing module and power module, and singlechip host system is connected with humiture detection module, liquid crystal display module, threshold setting module, alarm processing module and power module respectively. The single-chip microcomputer main control module is provided with a chip U2 with the model of STC89C52, the temperature and humidity detection module is provided with a sensor U4 with the model of DHT11, the liquid crystal display module is provided with a liquid crystal display LCD1 with the model of 1602, the threshold setting module is provided with a chip U1 with the model of AT24C02 and a key K1, a key K2, a key K3 and a key K4, the alarm processing module is provided with a D1 lamp, a D2 lamp, a triode Q2 with the model of PNP, a triode Q3 with the model of PNP, a relay RL1 and a relay RL2, the temperature and humidity condition in the greenhouse can be monitored in real time, and the intelligent greenhouse temperature and humidity monitoring system.
Description
Technical Field
The utility model relates to an agricultural greenhouse temperature and humidity measurement technical field especially relates to an agricultural greenhouse's humiture automatic check out system.
Background
The improvement is opened, the economic growth of China is rapid, the research and application technology of agriculture is more and more emphasized, and particularly, the development of greenhouse is one of the necessary facilities in the crop cultivation production. One of the most important links in modern agricultural production is the detection and control of some important parameters in the crop production environment, such as: temperature, humidity, soil content, etc. in the air, which directly affect the growth and yield of plants.
Nowadays, most of agricultural greenhouses adopt the mode of manual management to measure and control the temperature and humidity in the greenhouse, and the problem of inaccurate measurement accuracy, untimely control appears easily, leads to the growth of crops not good, is difficult to satisfy seasonal supply demand, has also increased labour's expenditure when causing the loss.
Therefore, aiming at the defects of the prior art, it is necessary to provide an automatic temperature and humidity detection system for an agricultural greenhouse to overcome the defects of the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to avoid prior art's weak point and provide an agricultural greenhouse's humiture automatic checkout system, have real-time supervision and control environment humiture, reduce the characteristics of labour's expenditure and convenient management.
The purpose of the utility model is realized through the following technical measures.
The utility model provides an agricultural greenhouse's humiture automatic check out system, be provided with singlechip host system, temperature and humidity detection module, liquid crystal display module, threshold setting module, alarm processing module and power module, singlechip host system is connected with temperature and humidity detection module, liquid crystal display module, threshold setting module, alarm processing module and power module respectively.
Preferably, the single chip microcomputer main control module is provided with a chip U2 with the model number of STC89C52, 8 pins of the chip U2 are connected with the temperature and humidity detection module, 32 pins, 33 pins, 34 pins, 35 pins, 36 pins, 37 pins, 38 pins and 39 pins of the chip U2 are respectively connected with the liquid crystal display module, 1 pin, 2 pins, 12 pins, 13 pins, 14 pins and 15 pins of the chip U2 are respectively connected with the threshold value setting module, and 6 pins and 7 pins of the chip U2 are respectively connected with the alarm processing module.
Preferably, the temperature and humidity detection module is provided with a sensor U4 and a resistor R3 of a type DHT11, a pin 1 of the sensor U4 is connected to the power supply input terminal VCC, a pin 2 of the sensor U4 and one end of the resistor R3 are respectively connected to a pin 8 of the chip U2, a pin 4 of the sensor U4 is grounded, and the other end of the resistor R3 is connected to the power supply input terminal VCC.
Preferably, the sensor U4 includes a resistive moisture sensor and an NTC temperature sensor. Wherein, the humidity measuring range of the resistance type humidity measuring element is 20-90% RH, and the temperature measuring range of the NTC temperature measuring element is 0-50 ℃.
Preferably, the sensor U4 is a digital temperature and humidity sensor, and the acquired environmental temperature and humidity data can be directly converted internally without an a/D conversion circuit and sent to the single chip microcomputer.
Preferably, the sensor U4 is connected with the single chip processor in a simple manner, can normally work by providing 3.5V-5.5V power supply voltage, and is convenient to maintain the stability of the sensor by adding a resistor when being connected to the single chip processor.
Preferably, the LCD module is provided with a LCD1 with a model 1602, a resistor R4, a resistor R5 and a resistor R5, one end of the resistor R4 and one end of the resistor R5 are respectively connected with pin 3 of the LCD1, the other end of the resistor R4 is connected with a power input VCC, the other end of the resistor R5 is grounded, pin 1 of the resistor RP1 is connected with the power input VCC, pin 9 of the resistor RP1 and pin 14 of the LCD1 are respectively connected with pin 32 of the LCD 2, pin 8 of the resistor RP1 and pin 13 of the LCD1 are respectively connected with pin 33 of the chip U2, pin 7 of the resistor RP 2 and pin 12 of the LCD 2 are respectively connected with pin 34 of the chip U2, pin 6 of the resistor RP 2 and pin 11 of the LCD 2 are respectively connected with pin 35 of the chip U2, pin 5 of the resistor RP 2 and pin 10 of the LCD 2 are respectively connected with pin 36 of the chip U2, pin 2 and pin 3637 of the chip 2, the pin 3 of the exclusion RP1 and the pin 8 of the liquid crystal display LCD1 are respectively connected with the pin 38 of the chip U2, the pin 2 of the exclusion RP1 and the pin 7 of the liquid crystal display LCD1 are respectively connected with the pin 39 of the chip U2, the pin 4 of the liquid crystal display LCD1 is connected with the pin 28 of the chip U2, the pin 5 of the liquid crystal display LCD1 is connected with the pin 27 of the chip U2, the pin 6 of the liquid crystal display LCD1 is connected with the pin 26 of the chip U2, the pin 1 of the liquid crystal display LCD1 is grounded, and the pin 2 of the liquid crystal display LCD1 is connected with the power supply input end VCC.
Preferably, the LCD1 has 16 pins, and displays the detected data information in a voltage control manner.
Preferably, the threshold setting module is provided with a chip U1 and a key K1, a key K2, a key K3, a key K4, a resistor R6 and a resistor R7 of a model AT24C02, one end of a pin 6 of the chip U1 and one end of a resistor R7 are connected with a pin 1 of the chip U2, one end of a pin 5 of the chip U1 and one end of a resistor R6 are connected with a pin 2 of the chip U6, a pin 7 of the chip U6 is grounded, the other end of the resistor R6 and the other end of the resistor R6 are connected with a power supply input terminal VCC, one end of the key K6, the key K6 and one end of the key K6 are grounded, the other end of the key K6 is connected with a pin 12 of the chip U6, the other end of the key K6 is connected with a pin 13 of the chip U6, the other end of the key K6 is connected with a pin 14 of the chip U6.
Preferably, the threshold setting module stores the data in an external memory after the upper limit value is set by a key, and the originally stored data can be directly read out when the external memory is restarted after power failure, so that the function of memorizing the data is achieved.
Preferably, the threshold setting module performs data transmission with the single chip microcomputer by means of an IIC serial bus.
Preferably, the alarm processing module is provided with a lamp D1, a lamp D2, a PNP type triode Q2, a PNP type triode Q3, a resistor R2, a resistor R8, a resistor R9, a resistor R10, a resistor R3, a relay RL1 and a relay RL2,
an emitter of a triode Q2 and an emitter of a triode Q3 are connected with a power supply input terminal VCC, a collector of a triode Q2 is connected with one ends of a relay RL1 and a resistor R2, a collector of a triode Q3 is connected with one end of a relay RL2 and one end of a resistor R9, a base of a triode Q2 is connected with one end of a resistor R8, a base of a triode Q3 is connected with one end of a resistor R10, the other end of a resistor R2 is connected with one end of a D1 lamp, the other end of a resistor R9 is connected with one end of a D2 lamp, the other end of a D1 lamp and the other end of a relay RL1 are grounded, the other end of a D2 lamp and the other end of a relay RL2 are grounded, the other end of a resistor R8 is connected with a pin 6 of a chip U2, and the other end.
Preferably, the relay RL1 and the relay RL2 respectively control temperature and humidity, and the light alarm adopts a red D1 lamp and a yellow D2 lamp to distinguish the temperature and the humidity, wherein the red D1 is in a temperature alarm state when being lighted, and the yellow D2 is in a humidity alarm state;
when the detected temperature or humidity is higher than a set upper limit value, a red D1 lamp or a yellow D2 lamp is turned on to enter an alarm state, meanwhile, the level of the single chip microcomputer is changed from high to low, and the PNP type triode is saturated due to the low level, so that a relay coil is powered on to generate an electromagnetic effect;
when the temperature is too high, the air is pumped into the greenhouse through outdoor air pumping and delivery to be cooled, and when the humidity is too high, the air is exhausted from the greenhouse to be dehumidified.
Preferably, the single chip microcomputer main control module is provided with a crystal oscillator circuit and a reset circuit, the crystal oscillator circuit and the reset circuit are respectively connected with the chip U2, the crystal oscillator circuit is provided with a capacitor C1, a capacitor C2 and a crystal oscillator X1, the reset circuit is provided with a resistor R1 and a coupling capacitor C3,
one end of a capacitor C1 and one end of a capacitor C2 are grounded, the other end of a capacitor C1 and one end of a crystal oscillator X1 are connected with a pin 19 of a chip U2, the other end of a capacitor C2 and the other end of a crystal oscillator X1 are connected with a pin 18 of a chip U2, one end of a resistor R1 is grounded, the other end of a resistor R1 and the negative electrode of a coupling capacitor C3 are connected with a pin 9 of a chip U2, and the positive electrode of the coupling capacitor C3 is connected with a power supply input terminal VCC.
Preferably, the resistance values of the resistor R1, the resistor R3, the resistor R4, the resistor R6 and the resistor R7 are all 10 kilo-ohms, the resistance values of the resistor R8 and the resistor R10 are all 2.2 kilo-ohms, the resistance values of the resistor R2 and the resistor R9 are 1 kilo-ohm, the resistance value of the resistor R5 is 1.5 kilo-ohms, the capacitances of the capacitor C1 and the capacitor C2 are all 30pF, the capacitance of the capacitor C3 is 10uF, and the frequency of the crystal oscillator X1 is 12M.
Preferably, the power module supplies power to the system by adopting a mode that a DC power socket is additionally provided with a battery box or a power line supplies power, and a self-locking switch is arranged between the power interface and the system, so that the switch management of the system can be facilitated.
The utility model discloses an agricultural greenhouse's humiture automatic check out system, including singlechip host system, temperature and humidity detection module, liquid crystal display module, threshold setting module, alarm processing module and power module. The temperature and humidity detection module adopts a DHT11 sensor and comprises a resistance type humidity measurement element and an NTC temperature measurement element, various environmental indexes in the agricultural greenhouse can be monitored in real time, and the change of the temperature and the humidity can be monitored in real time through an LCD1602 liquid crystal display screen, so that the growth condition of crops is ensured to be good, and the effect of excellent yield is achieved. Compare manual management's mode, the utility model discloses an agricultural greenhouse's humiture automatic checkout system possesses the characteristics of convenient management, reduces the expenditure of cost when can reducing manpower resources's use.
Drawings
The present invention will be further described with reference to the accompanying drawings, but the contents in the drawings do not constitute any limitation to the present invention.
Fig. 1 is the system structure schematic diagram of the automatic temperature and humidity detection system of the agricultural greenhouse of the utility model.
Fig. 2 is the circuit schematic diagram of the automatic temperature and humidity detection system of the agricultural greenhouse of the utility model.
In fig. 1 to 2, the method includes:
the temperature and humidity detection system comprises a single chip microcomputer main control module 100, a temperature and humidity detection module 200, a liquid crystal display module 300, a threshold value setting module 400, an alarm processing module 500 and a power supply module 600.
Detailed Description
The present invention will be further illustrated with reference to the following examples.
Example 1.
An automatic temperature and humidity detection system of an agricultural greenhouse is provided with a single-chip microcomputer main control module, a temperature and humidity detection module, a liquid crystal display module, a threshold value setting module, an alarm processing module and a power supply module as shown in fig. 1 to 2, wherein the single-chip microcomputer main control module is respectively connected with the temperature and humidity detection module, the liquid crystal display module, the threshold value setting module, the alarm processing module and the power supply module.
The single-chip microcomputer main control module is provided with a chip U2, 8 pins of a chip U2 are connected with the temperature and humidity detection module, 32 pins, 33 pins, 34 pins, 35 pins, 36 pins, 37 pins, 38 pins and 39 pins of the chip U2 are respectively connected with the liquid crystal display module, 1 pin, 2 pins, 12 pins, 13 pins, 14 pins and 15 pins of the chip U2 are respectively connected with the threshold value setting module, and 6 pins and 7 pins of the chip U2 are respectively connected with the alarm processing module.
The temperature and humidity detection module is provided with sensor U4 and resistance R3, and 1 foot of sensor U4 is connected with power input VCC, and 2 feet of sensor U4 and one end of resistance R3 are connected with 8 feet of chip U2 respectively, and 4 feet of sensor U4 are ground connection, and the other end of resistance R3 is connected with power input VCC.
The liquid crystal display module is provided with a liquid crystal display LCD1 with model 1602, a resistor R4, a resistor R5 and a resistor R1, one end of the resistor R4 and one end of the resistor R5 are respectively connected with a pin 3 of the liquid crystal display LCD1, the other end of the resistor R4 is connected with a power supply input terminal VCC, the other end of the resistor R5 is grounded, a pin 1 of the resistor RP1 is connected with the power supply input terminal VCC, a pin 9 of the resistor RP1 and a pin 14 of the liquid crystal display LCD1 are respectively connected with a pin 32 of the chip U2, a pin 8 of the resistor RP1 and a pin 13 of the liquid crystal display LCD1 are respectively connected with a pin 33 of the chip U2, a pin 7 of the resistor RP 2 and a pin 12 of the liquid crystal display LCD 2 are respectively connected with a pin 34 of the chip U2, a pin 6 of the resistor RP 2 and a pin 11 of the liquid crystal display LCD 2 are respectively connected with a pin 35 of the chip U2, a pin 5 of the resistor RP 2 and a pin 10 of the LCD 2 are respectively connected with a pin 36 of the chip U2, a pin 2 and a pin, the pin 3 of the exclusion RP1 and the pin 8 of the liquid crystal display LCD1 are respectively connected with the pin 38 of the chip U2, the pin 2 of the exclusion RP1 and the pin 7 of the liquid crystal display LCD1 are respectively connected with the pin 39 of the chip U2, the pin 4 of the liquid crystal display LCD1 is connected with the pin 28 of the chip U2, the pin 5 of the liquid crystal display LCD1 is connected with the pin 27 of the chip U2, the pin 6 of the liquid crystal display LCD1 is connected with the pin 26 of the chip U2, the pin 1 of the liquid crystal display LCD1 is grounded, and the pin 2 of the liquid crystal display LCD1 is connected with the power supply input end VCC.
The LCD1602 is a liquid property at normal temperature, such as fluidity. And has the optical anisotropy of the crystal. The LCD1602 has a total of two columns, each capable of displaying 16 characters, and may display 32 characters at a time. The display principle of the liquid crystal display is that the state of liquid crystal molecules can be controlled by a power supply voltage, and the physical properties of liquid crystal are utilized. When the power is applied, the arrangement of the liquid crystal molecules becomes orderly, and the principle of controlling the display of the device is easily achieved through the characteristics of the crystal. The liquid crystal display is light and thin, and only needs 4.5V-5.5V voltage to work normally in the aspect of power supply voltage. The utility model discloses a 7 th pin ~ 14 th pin of LCD1602 LCD inserts the P0 port of chip U2 and carries out data transfer, and then inserts chip U2's P2 to the control pin fourth pin of liquid crystal to the sixth pin.
The threshold value setting module is provided with a chip U1, a key K1, a key K2, a key K3, a key K4, a resistor R6 and a resistor R7 of the type AT24C02, wherein one end of a pin 6 of the chip U1 and one end of a resistor R7 are connected with a pin 1 of the chip U2, one end of a pin 5 of the chip U1 and one end of a resistor R6 are connected with a pin 2 of the chip U6, a pin 7 of the chip U6 is grounded, the other end of the resistor R6 and the other end of the resistor R6 are connected with a power supply input terminal VCC, one ends of the key K6, the key K6 and the key K6 are grounded, the other end of the key K6 is connected with a pin 12 of the chip U6, the other end of the key K6 is connected with a pin 13 of the chip U6, the other end of the key K6 is connected with a pin.
The threshold value setting module is composed of an AT24C02 chip in an external memory EEPROM and four keys, when the upper limit value is set through the keys, the external memory stores the data, and the originally stored data can be directly read out when the external memory is restarted after power failure, so that the function of memorizing the data is realized. The threshold value sets the mode of the data transmission of the module to the IIC serial bus. The 5 th and 6 th pins of the chip U1 are connected to two 10K resistors. Therefore, the accuracy of data transmission can be guaranteed, the stability of bus transmission is improved, data transmission is carried out after the data transmission is carried out through connection with the P1.0 port and the P1.1 port of the chip U2, the upper limit value is input in the four interfaces from P3.2 to P3.5 of the chip U2 through four keys, the key K1 is used for adjusting humidity reduction, the key K2 is used for adjusting humidity increase, the key K3 is used for adjusting temperature reduction, and the key K4 is used for adjusting temperature increase.
The alarm processing module is provided with a D1 lamp, a D2 lamp, a PNP type triode Q2, a PNP type triode Q3, a resistor R2, a resistor R8, a resistor R9, a resistor R10, a resistor R3, a relay RL1 and a relay RL 2.
An emitter of a triode Q2 and an emitter of a triode Q3 are connected with a power supply input terminal VCC, a collector of a triode Q2 is connected with one ends of a relay RL1 and a resistor R2, a collector of a triode Q3 is connected with one end of a relay RL2 and one end of a resistor R9, a base of a triode Q2 is connected with one end of a resistor R8, a base of a triode Q3 is connected with one end of a resistor R10, the other end of a resistor R2 is connected with one end of a D1 lamp, the other end of a resistor R9 is connected with one end of a D2 lamp, the other end of a D1 lamp and the other end of a relay RL1 are grounded, the other end of a D2 lamp and the other end of a relay RL2 are grounded, the other end of a resistor R8 is connected with a pin 6 of a chip U2, and the other end.
The alarm processing module is controlled by a light alarm and a relay switch. And two relays of the alarm processing module are used for processing temperature and humidity. When the value of the temperature or humidity that detects exceeded the upper limit value that sets up, light can report to the police, and the relay can begin to work simultaneously, if the high temperature then sends into the big-arch shelter from outdoor convulsions and carries out aeration cooling, and the humidity is too high then dehumidifies from big-arch shelter convulsions discharge is outdoor. The working principle of the alarm processing module is that when the detected temperature or humidity is higher than a set value, the D1 lamp or the D2 lamp is turned on, the level of the chip U2 is changed from high to low, the low level causes the triode Q2 or Q3, namely the switch is turned on, at the moment, the coil of the relay RL1 or RL2 is turned on and generates an electromagnetic effect, the moving contact of the armature is turned from a normally closed end to a normally open end, the circuit is turned on, and the load is driven to work.
The single chip microcomputer main control module is provided with a crystal oscillator circuit and a reset circuit, the crystal oscillator circuit and the reset circuit are respectively connected with a chip U2, the crystal oscillator circuit is provided with a capacitor C1, a capacitor C2 and a crystal oscillator X1, and the reset circuit is provided with a resistor R1 and a coupling capacitor C3.
One end of a capacitor C1 and one end of a capacitor C2 are grounded, the other end of a capacitor C1 and one end of a crystal oscillator X1 are connected with a pin 19 of a chip U2, the other end of a capacitor C2 and the other end of a crystal oscillator X1 are connected with a pin 18 of a chip U2, one end of a resistor R1 is grounded, the other end of a resistor R1 and the negative electrode of a coupling capacitor C3 are connected with a pin 9 of a chip U2, and the positive electrode of the coupling capacitor C3 is connected with a power supply input terminal VCC.
The utility model discloses a principle is that utilize temperature and humidity sensor to gather the temperature and humidity of big-arch shelter internal environment, the data transmission that gathers is handled to the singlechip, wait for the singlechip to handle and the analysis after the data of receiving, show the humiture value of current detection on sending the data information that will handle to liquid crystal display, and judge whether be higher than the upper limit value that sets up, if the current temperature is higher than the temperature value of setting for, relay RL1 begins to work, corresponding red light lights, then cools down and handles; if the current humidity is higher than the set humidity value, the relay RL2 starts to work, and the corresponding yellow lamp is turned on, so that the dehumidification treatment is carried out.
An automatic temperature and humidity detection system of an agricultural greenhouse comprises a single-chip microcomputer main control module, a temperature and humidity detection module, a liquid crystal display module, a threshold value setting module, an alarm processing module and a power supply module. The temperature and humidity detection module adopts a DHT11 sensor and comprises a resistance type humidity measurement element and an NTC temperature measurement element, various environmental indexes in the agricultural greenhouse can be monitored in real time, and the change of the temperature and the humidity can be monitored in real time through an LCD1602 liquid crystal display screen, so that the growth condition of crops is ensured to be good, and the effect of excellent yield is achieved. Compare manual management's mode, the utility model discloses an agricultural greenhouse's humiture automatic checkout system possesses the characteristics of convenient management, reduces the expenditure of cost when can reducing manpower resources's use.
Example 2.
The utility model provides an agricultural greenhouse's humiture automatic checkout system, other characteristics are the same with embodiment 1, the difference lies in: compared with STC89C51, the RAM of STC89C52 is increased from 128 bytes to 256 bytes, the ROM is increased from 4K to 8K, and in addition to T0 and T1, the T2 interrupt flag bit is also increased in the aspect of interrupt sources, so that the running speed and the processing become more optimized.
The capacitance of the capacitor C1 and the capacitance of the capacitor C2 are both 30pF, the capacitance of the coupling capacitor C3 is 10upF, the resistance values of the resistor R1, the resistor R3, the resistor R4, the resistor R6 and the resistor R7 are all 10 kilo-ohms, the resistance values of the resistor R2 and the resistor R9 are all 1 kilo-ohm, the resistance value of the resistor R5 is 1.5 kilo-ohm, the resistance values of the resistor R8 and the resistor R10 are 2.2 kilo-ohms, and the frequency of the crystal oscillator X1 is 12M.
The sensors U4 selected by the temperature and humidity detection module can be DHT11, DHT22, AM2302 and the like. The DHT11 sensor is low in price, accurate in monitoring data and suitable for monitoring places with high measuring precision and wide range.
It should be noted that the sensor U4 is specifically a DHT11 sensor, and includes a resistive humidity measuring element and an NTC temperature measuring element. Wherein, the humidity measuring range of the resistance type humidity measuring element is 20-90% RH, and the temperature measuring range of the NTC temperature measuring element is 0-50 ℃.
The DHT11 sensor is a digital temperature and humidity sensor, collected environment temperature and humidity data can be directly subjected to data conversion inside without an A/D conversion circuit and sent to the single chip microcomputer, the DHT11 sensor is simple in connection with the single chip microcomputer processor, 3.5V-5.5V power supply voltage is provided, normal work can be performed, and a resistor is added when the single chip microcomputer is connected, so that stability of the sensor is kept conveniently.
The utility model discloses an agricultural greenhouse's humiture automatic check out system is provided with singlechip host system, temperature and humidity detection module, liquid crystal display module, threshold setting module, alarm processing module and power module, can temperature and humidity in the air in the real-time supervision big-arch shelter, has convenient management, efficient characteristics.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. The utility model provides a temperature and humidity automatic check out system of green house which characterized in that: is provided with a singlechip main control module, a temperature and humidity detection module, a liquid crystal display module, a threshold value setting module, an alarm processing module and a power supply module,
the single-chip microcomputer main control module is respectively connected with the temperature and humidity detection module, the liquid crystal display module, the threshold value setting module, the alarm processing module and the power supply module;
the single-chip microcomputer main control module is provided with a chip U2 with the model number of STC89C52, 8 pins of the chip U2 are connected with a temperature and humidity detection module, 32 pins, 33 pins, 34 pins, 35 pins, 36 pins, 37 pins, 38 pins and 39 pins of the chip U2 are respectively connected with a liquid crystal display module, 1 pin, 2 pins, 12 pins, 13 pins, 14 pins and 15 pins of the chip U2 are respectively connected with a threshold value setting module, and 6 pins and 7 pins of the chip U2 are respectively connected with an alarm processing module;
the temperature and humidity detection module is provided with sensor U4 and resistance R3 that the model is DHT11, and 1 foot and the power input VCC of sensor U4 are connected, and 2 feet of sensor U4 and resistance R3's one end are connected with chip U2's 8 feet respectively, and 4 feet ground connection of sensor U4, resistance R3's the other end and power input VCC are connected.
2. The automatic temperature and humidity detection system for the agricultural greenhouse of claim 1, wherein the automatic temperature and humidity detection system comprises: the liquid crystal display module is provided with a liquid crystal display LCD1 with a model 1602, a resistor R4, a resistor R5 and a resistor RP1, one end of the resistor R4 and one end of the resistor R5 are respectively connected with a pin 3 of the liquid crystal display LCD1, the other end of the resistor R4 is connected with a power supply input terminal VCC, the other end of the resistor R5 is grounded, a pin 1 of the resistor RP1 is connected with the power supply input terminal VCC, a pin 9 of the resistor RP1 and a pin 14 of the liquid crystal display LCD1 are respectively connected with a pin 32 of the chip U2, a pin 8 of the resistor RP1 and a pin 13 of the liquid crystal display LCD1 are respectively connected with a pin 33 of the chip U2, a pin 7 of the resistor RP 2 and a pin 12 of the liquid crystal display LCD 2 are respectively connected with a pin 34 of the chip U2, a pin 6 of the resistor RP 2 and a pin 11 of the liquid crystal display LCD 2 are respectively connected with a pin 35 of the chip U2, a pin 5 of the resistor RP 2 and a pin 3637 of the LCD 2 are respectively connected with a pin 36 of the chip U2 and a pin 2 of the, the pin 3 of the exclusion RP1 and the pin 8 of the liquid crystal display LCD1 are respectively connected with the pin 38 of the chip U2, the pin 2 of the exclusion RP1 and the pin 7 of the liquid crystal display LCD1 are respectively connected with the pin 39 of the chip U2, the pin 4 of the liquid crystal display LCD1 is connected with the pin 28 of the chip U2, the pin 5 of the liquid crystal display LCD1 is connected with the pin 27 of the chip U2, the pin 6 of the liquid crystal display LCD1 is connected with the pin 26 of the chip U2, the pin 1 of the liquid crystal display LCD1 is grounded, and the pin 2 of the liquid crystal display LCD1 is connected with the power supply input end VCC.
3. The automatic temperature and humidity detection system for the agricultural greenhouse of claim 2, wherein the automatic temperature and humidity detection system comprises: the threshold setting module is provided with a chip U1, a key K1, a key K2, a key K3, a key K4, a resistor R6 and a resistor R7 of an AT24C02 model, wherein one end of a pin 6 of the chip U1 and one end of a resistor R7 are connected with a pin 1 of the chip U2, one end of a pin 5 of the chip U1 and one end of a resistor R6 are connected with a pin 2 of the chip U6, a pin 7 of the chip U6 are grounded, the other end of the resistor R6 and the other end of the resistor R6 are connected with a power supply input terminal VCC, one ends of the key K6, the key K6 and the key K6 are grounded, the other end of the key K6 is connected with a pin 12 of the chip U6, the other end of the key K6 is connected with a pin 13 of the chip U6, the other end of the key K6 is connected with a pin 14 of.
4. The automatic temperature and humidity detection system for the agricultural greenhouse of claim 3, wherein the automatic temperature and humidity detection system comprises: the alarm processing module is provided with a D1 lamp, a D2 lamp, a PNP type triode Q2, a PNP type triode Q3, a resistor R2, a resistor R8, a resistor R9, a resistor R10, a relay RL1 and a relay RL2,
an emitter of a triode Q2 and an emitter of a triode Q3 are connected with a power supply input terminal VCC, a collector of a triode Q2 is connected with one ends of a relay RL1 and a resistor R2, a collector of a triode Q3 is connected with one end of a relay RL2 and one end of a resistor R9, a base of a triode Q2 is connected with one end of a resistor R8, a base of a triode Q3 is connected with one end of a resistor R10, the other end of a resistor R2 is connected with one end of a D1 lamp, the other end of a resistor R9 is connected with one end of a D2 lamp, the other end of a D1 lamp and the other end of a relay RL1 are grounded, the other end of a D2 lamp and the other end of a relay RL2 are grounded, the other end of a resistor R8 is connected with a pin 6 of a chip U2, and the other end.
5. The automatic temperature and humidity detection system for the agricultural greenhouse of claim 4, wherein the automatic temperature and humidity detection system comprises: the main control module of the single chip is provided with a crystal oscillator circuit and a reset circuit which are respectively connected with a chip U2,
the crystal oscillator circuit is provided with a capacitor C1, a capacitor C2 and a crystal oscillator X1,
the reset circuit is provided with a resistor R1 and a coupling capacitor C3,
one end of a capacitor C1 and one end of a capacitor C2 are grounded, the other end of a capacitor C1 and one end of a crystal oscillator X1 are connected with a pin 19 of a chip U2, the other end of a capacitor C2 and the other end of a crystal oscillator X1 are connected with a pin 18 of a chip U2, one end of a resistor R1 is grounded, the other end of a resistor R1 and the negative electrode of a coupling capacitor C3 are connected with a pin 9 of a chip U2, and the positive electrode of the coupling capacitor C3 is connected with a power supply input terminal VCC.
6. The automatic temperature and humidity detection system for the agricultural greenhouse of claim 5, wherein the automatic temperature and humidity detection system comprises: the sensor U4 comprises a resistance type humidity measuring element and an NTC temperature measuring element, the humidity measuring range of the resistance type humidity measuring element is 20-90% RH, and the temperature measuring range of the NTC temperature measuring element is 0-50 ℃.
7. The automatic temperature and humidity detection system for the agricultural greenhouse of claim 6, wherein the automatic temperature and humidity detection system comprises: the resistance values of the resistor R1, the resistor R3, the resistor R4, the resistor R6 and the resistor R7 are all 10 kilo-ohms, the resistance values of the resistor R8 and the resistor R10 are all 2.2 kilo-ohms, the resistance values of the resistor R2 and the resistor R9 are 1 kilo-ohm, the resistance value of the resistor R5 is 1.5 kilo-ohm, the capacitance values of the capacitor C1 and the capacitor C2 are all 30pF, the capacitance value of the capacitor C3 is 10uF, and the frequency of the crystal oscillator X1 is 12M.
8. The automatic temperature and humidity detection system for the agricultural greenhouse of claim 7, wherein the automatic temperature and humidity detection system comprises: the power supply module is a DC power supply socket;
the DC power supply socket is a DC power supply socket with an external battery box or a power line power supply DC power supply socket.
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| CN201920675432.0U CN210426616U (en) | 2019-05-13 | 2019-05-13 | Automatic temperature and humidity detection system for agricultural greenhouse |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751256A (en) * | 2020-06-16 | 2020-10-09 | 福建友通实业有限公司 | Can make up multi-functional empty gas detection of collocation survey instrument |
| CN113110165A (en) * | 2021-04-13 | 2021-07-13 | 四川轻化工大学 | Intelligent temperature and humidity monitoring and alarming system for yeast making house for making hard liquor |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751256A (en) * | 2020-06-16 | 2020-10-09 | 福建友通实业有限公司 | Can make up multi-functional empty gas detection of collocation survey instrument |
| CN113110165A (en) * | 2021-04-13 | 2021-07-13 | 四川轻化工大学 | Intelligent temperature and humidity monitoring and alarming system for yeast making house for making hard liquor |
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