CN114967799A

CN114967799A - Greenhouse environment remote measurement and control system suitable for arid mountain area

Info

Publication number: CN114967799A
Application number: CN202210474014.1A
Authority: CN
Inventors: 王寅; 汪洋; 夏婷婷; 张治超; 唐海生
Original assignee: Xinjiang Agricultural University
Current assignee: Xinjiang Agricultural University
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-08-30

Abstract

The invention discloses a greenhouse environment remote measurement and control system suitable for arid mountainous areas, which comprises a transmitting device and a receiving device, wherein the transmitting device is used for acquiring environmental data and atmospheric data in real time, acquiring an environmental threshold value based on the atmospheric data, judging the environmental data according to the environmental threshold value, automatically controlling the environmental control equipment to be opened and closed based on a judgment result, and transmitting the environmental data, the environmental threshold value, the atmospheric data, the judgment result and the opening and closing state of the environmental control equipment to the receiving device; the receiving device is used for receiving the data transmitted by the transmitting device, displaying the received data and giving an alarm according to a judgment result, and is also used for acquiring a key signal, wherein the key signal is used for controlling the on and off of the environment control equipment in the transmitting device. Through the technical scheme, the automatic control system for monitoring and controlling the environmental data in real time can be effectively provided.

Description

Greenhouse environment remote measurement and control system suitable for arid mountain area

Technical Field

The invention relates to the technical field of agricultural application, in particular to a greenhouse environment remote measurement and control system suitable for arid mountainous areas.

Background

The greenhouse is an indispensable agricultural facility in modern agricultural application, the agricultural facility in China is generally started late, and in addition, the traditional agriculture is often influenced by receiving multiple factors such as geographical environment, natural environment and the like, the control difficulty of the yield and quality of agricultural products is high, and the yield and input ratio cannot be improved late. With the rapid development of sensor detection technology and microprocessors, the temperature and humidity monitoring technology is also developed towards the direction of digitization, intellectualization and networking, and scientifically and reasonably receiving and controlling the temperature and humidity and the illumination intensity in the greenhouse are key technologies for greenhouse environment measurement and control.

In the production management process of the modern agricultural greenhouse, the changes of the temperature, the humidity and the illumination intensity of the agricultural greenhouse have very important influence on the growth of plants, and particularly in arid mountainous areas, the problems of water shortage, insufficient illumination and the like are faced, so that the agricultural greenhouse in the area is more difficult to maintain a stable crop growth environment compared with other plain areas. Therefore, in order to ensure the high yield of crops in the agricultural greenhouse in the area, the temperature and humidity in the crop growth environment in the agricultural greenhouse need to be monitored and controlled in real time, the automatic control system can timely and effectively maintain the temperature and humidity and the illumination intensity within a reasonable growth range suitable for the crops, the temperature and humidity and the illumination intensity are prevented from generating large range fluctuation, and the great positive factor is provided for improving the yield and the quality of the crops.

Disclosure of Invention

In order to solve the problems of management and monitoring of the current greenhouse, data transmission, remote end receiving control and medium-high altitude threshold setting in the prior art, the invention provides a greenhouse environment remote measurement and control system suitable for arid mountainous areas, and can effectively provide an automatic control system for monitoring and controlling environmental data in real time.

In order to achieve the technical purpose, the invention provides the following technical scheme:

the utility model provides a long-range system of observing and controling of big-arch shelter environment suitable for arid mountain area, includes: a transmitting device and a receiving device, wherein,

the sending device is used for acquiring the environmental data and the atmospheric data in real time, acquiring an environmental threshold value based on the atmospheric data, judging the environmental data according to the environmental threshold value, automatically controlling the environmental control equipment to be opened and closed based on a judgment result, and transmitting the environmental data, the environmental threshold value, the atmospheric data, the judgment result and the opening and closing state of the environmental control equipment to the receiving device;

the receiving device is used for receiving the data transmitted by the transmitting device, displaying the received data and giving an alarm according to a judgment result, and is also used for acquiring a key signal, wherein the key signal is used for controlling the on and off of the environment control equipment in the transmitting device.

Optionally, the sending device includes: the system comprises a sending end control unit, a sending end communication unit, a sensing module, a sending end power management circuit, a relay control circuit and a sending end reset circuit;

the sending terminal control unit is used for receiving the environmental data and the atmospheric data collected by the sensing module, acquiring an environmental threshold value through an atmospheric-temperature, humidity and illumination marking algorithm based on the atmospheric data, judging the environmental data according to the environmental threshold value, controlling the relay control circuit to open and close the environmental control equipment according to a judgment result, and transmitting the environmental data, the environmental threshold value, the atmospheric data, the judgment result and the opening and closing state of the environmental control equipment to the receiving device through the control sending terminal communication unit;

the transmitting end power management circuit is used for supplying power to the transmitting end control unit, the transmitting end communication unit, the sensing module, the relay control circuit and the transmitting end reset circuit;

the sending end reset circuit is used for initializing the sending end control unit.

Optionally, the receiving apparatus includes: the device comprises a receiving end control unit, a receiving end communication unit, a display circuit, a receiving end power management circuit, an LED circuit, a key circuit, an alarm circuit and a receiving end reset circuit;

the receiving end control unit is used for receiving the data transmitted by the transmitting device through the receiving end communication unit, controlling the display circuit and the LED circuit to display the received data, and controlling the display circuit and the alarm circuit to give an alarm according to the judgment result;

the receiving end power supply management circuit is used for supplying power to the receiving end control unit, the receiving end communication unit, the display circuit, the LED circuit, the key circuit, the alarm circuit and the receiving end reset circuit;

the key circuit is used for acquiring a key signal, and the priority of the environment equipment controlled by the key signal is greater than the automatic control priority;

the receiving end reset circuit is used for initializing the receiving end control unit.

Optionally, the sensing module includes an atmospheric sensor, a temperature and humidity sensor, and an illumination sensor.

Optionally, the power management circuit at the transmitting end includes an AC-DC conversion circuit, a first conversion circuit, and a first voltage regulator circuit

The AC-DC conversion circuit is used for acquiring commercial power and acquiring direct current through a transformer and a bridge circuit based on the commercial power;

the first conversion circuit is used for adjusting a direct current numerical value through the voltage reduction chip;

the first voltage stabilizing circuit is used for stabilizing direct current through the LOD voltage stabilizer.

Optionally, the receiving end power management circuit includes a power supply, a second converting circuit, and a second voltage stabilizing circuit

The power supply adopts dry batteries;

the second conversion circuit is used for adjusting the direct current value of the dry battery through the boost chip;

the second voltage stabilizing circuit is used for stabilizing direct current through the LOD voltage stabilizer.

Optionally, the relay control circuit is connected with an environment control device, wherein the environment control device comprises a cooling device, a humidifying device, a warming device and an illuminating device.

Optionally, the receiving device further includes a storage function, and data of the storage function is stored in a FLASH area built in the single chip microcomputer.

The invention has the following technical effects:

according to the invention, the relevant sensors can be controlled to acquire and process environmental data in real time, the power amplifier is matched with the wireless communication equipment to send signals to the receiving end, and workers can remotely monitor environmental changes in the greenhouse in real time through the OLED display screen. When the collected environmental parameters exceed the threshold range set by people, the receiving end can immediately send out an alarm response and display the alarm content. The staff can make the judgement according to the actual environment that the big-arch shelter is located at present whether carry out manual intervention or increase the power of controller, still close the warning, adopt automatic control's mode. The environment in the greenhouse is ensured to reach the range expected by the user.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic diagram of a system provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of a specific system architecture provided by an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a transmitting-end power supply circuit according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a sensor module and a transmitting-end communication unit according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a sending-end single chip microcomputer and a reset circuit provided by an embodiment of the invention;

FIG. 6 is a schematic diagram of a relay provided in an embodiment of the invention;

fig. 7 is a schematic structural diagram of a receiving-end power supply circuit according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a display circuit, a receiving end communication unit and an alarm circuit according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a receiving-end single-chip microcomputer and a reset circuit provided in the embodiment of the present invention;

FIG. 10 is a schematic diagram of an LED circuit and a key circuit according to an embodiment of the present invention;

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

As shown in fig. 1, the present invention provides a greenhouse environment remote measurement and control system suitable for arid mountainous areas, which includes: a transmitting device and a receiving device, wherein,

As shown in fig. 1-2, the transmitting apparatus includes: the device comprises a singlechip control unit, a wireless communication unit, a temperature and humidity sensor, an atmospheric pressure sensor, an illumination intensity sensor, an AC-DC conversion circuit, a DC-DC conversion circuit, a voltage stabilizing circuit, a relay control circuit and a reset circuit.

The receiving apparatus includes: the device comprises a singlechip control unit, a wireless communication unit, a display circuit, a DC-DC conversion circuit, a voltage stabilizing circuit, an LED circuit, a key circuit, an alarm circuit and a reset circuit.

The operating principle of the transmitting apparatus is as follows:

the commercial power is supplied to the whole sending device after passing through the AC-DC conversion circuit, the DC-DC conversion circuit and the voltage stabilizing circuit, so that the voltage stability of the sending device is ensured. After the single chip microcomputer control chip is electrified, initializing an atmospheric pressure sensor, a wireless communication chip, an illumination intensity sensor and a temperature and humidity sensor one by one after the single chip microcomputer control chip completes initialization of a register of the single chip microcomputer control chip; when the upper and lower limits of the initial threshold value need to be set, the single chip microcomputer firstly reads an internal corresponding register to judge whether the starting is caused by powering on again after power failure or pressing a reset circuit; if the power is off and then the power is on again, the single chip microcomputer initializes the atmospheric pressure sensor, automatically sets an initial value of temperature, humidity and illumination according to an internal air pressure-temperature and humidity marking algorithm by reading data output by the atmospheric pressure sensor, and otherwise, reads a stored threshold value from an initial address corresponding to an upper and lower threshold value of temperature, humidity and illumination intensity in the internal FLASH. The simulated environment values collected by the other sensors are as follows: temperature, humidity, and illumination intensity within the greenhouse; the digital-to-analog converters inside or outside the sensors are converted into digital information which can be processed by the single chip microcomputer, the single chip microcomputer controls the sensors to send data to the single chip microcomputer according to communication protocols of the sensors, and the single chip microcomputer receives the data from the sensors and performs corresponding processing to convert the data into corresponding temperature and humidity and illumination intensity. And then, the singlechip controls the wireless communication chip to transmit the acquired temperature and humidity, the acquired illumination intensity, the corresponding upper and lower threshold values of the temperature and humidity and the illumination intensity, the current atmospheric pressure and the current starting and closing information of which equipment to start and close to a receiving device. And receiving a control signal sent by the receiving device; if the control signal is null, the single chip microcomputer compares the acquired environment value with the corresponding threshold range, if the environment value exceeds the threshold range, the single chip microcomputer controls the corresponding relay circuit to start or close corresponding equipment, such as: the device comprises a cooling device, a humidifying device, a heating device and a lighting device; if the control signal is not null, the measurement and control setting cannot automatically control the corresponding equipment according to the threshold, and the initiative of the control is given to the receiving device. After the threshold value is modified every time, the single chip microcomputer can write the threshold value into a FLASH at a corresponding position in the single chip microcomputer, and data loss caused by accidental power failure is avoided. The reset circuit is used for restarting and resetting the singlechip.

The operating principle of the receiving apparatus is as follows:

two dry batteries are used as the power supply of the receiving device, and the device has the characteristic of convenient replacement. The power input is output constantly after passing through the DC-DC conversion circuit and the voltage stabilizing circuit, and the stable voltage supplies power for the subsequent whole receiving device circuit. After the power is on, the singlechip controls the chip to initialize the wireless transmission chip, the OLED display screen, the LED circuit and the alarm circuit one by one after the chip completes self initialization.

And then the singlechip controls the wireless communication chip to receive the current temperature and humidity in the greenhouse, the illumination intensity, the upper and lower threshold limits corresponding to the temperature and humidity and the illumination intensity, and the starting and closing information of the specific equipment, which are sent by the sending device. Writing the environmental data into the OLED display screen for displaying, and if the environmental data exceeds the corresponding threshold range, displaying alarm information by the OLED display screen to indicate which environmental data or environmental data exceeds the threshold range; the single chip microcomputer sends a square wave control signal to an MOS (metal oxide semiconductor) tube in the alarm circuit, and a passive buzzer in the alarm circuit is controlled to give an alarm sound to remind a worker of the current environmental condition in the greenhouse; if the operator selects to display the warning response, because the equipment in the greenhouse starts to work to respond to the warning at the moment, a key corresponding to a warning circuit in the key circuit can be pressed, the warning is temporarily closed for 10 minutes when the key is pressed once, and after the time is up, if the environmental data in the greenhouse still exceeds the corresponding threshold range, the warning circuit rings again to prompt the operator; when the operator presses the key corresponding to the alarm circuit in the key circuit for a long time, the alarm is turned off for 24 hours.

And according to the equipment starting and closing information, the single chip microcomputer controls the LED corresponding to the LED circuit to indicate that the equipment corresponding to the current LED works. If the working personnel need to adjust the environmental data in the greenhouse, on one hand, after a mode selection key in the key circuit is pressed to select the type of the threshold value to be changed, a threshold value increasing key or a threshold value decreasing key is pressed to adjust the corresponding threshold value range, the modified threshold value is sent to the sending device by the single chip microcomputer control wireless transmission chip, and the sending device automatically controls the equipment to be started or closed according to the newly set threshold value range. On the other hand, the staff can directly press the keys corresponding to the cooling equipment, the humidifying equipment, the heating equipment and the illuminating equipment to directly control the starting and the closing of the current equipment; when the operator presses the keys, the last LED of the LED circuit is turned on to indicate that the manual operation is currently performed, and when the corresponding device is operated, the corresponding LED is turned on. If the operation is finished, the worker only needs to press any one of the control keys for a long time to indicate that manual control is not performed any more, and meanwhile, the last LED of the LED circuit is turned off; if the operator forgets to release the manual operation, the receiving end system will automatically release the manual operation two minutes after the last operation.

The sending end and receiving end single chip microcomputer control chips are STM32F103C6T6, the clock master frequency is 72MHZ, and the data processed at one time can reach 32 bits. Compared with a common 8-bit 12MHZ single chip microcomputer, the performance of the single chip microcomputer is more superior. The single chip microcomputer integrates an I-class peripheral, realizes high performance on the basis of low power consumption, low voltage operation and the like, realizes high integration at an acceptable price, and has a simple structure and a simple, convenient and easy-to-use tool.

The wireless communication modules of the transmitting end and the receiving end both adopt NRF24L01+ transmission modules enhanced by a Power Amplifier (PA). The model of the wireless transmission module is NRF24L01+, the wireless transmission module works at 2.4 GHz-2.5 GHZISM, a power amplifier chip and an external antenna are additionally arranged in a frequency band, and the transmission distance is increased. NRF24L01 has low power consumption, with an operating current of only 9mA when launched at-6 dBm; when data receiving is carried out, the working current is only 12.3mA, and the distance is farther relative to the Wi-Fi in terms of data transmission.

The AC-DC circuit of the transmitting device is a circuit consisting of a transformer, a rectifier consisting of diodes and a capacitor. The transformer converts 220V commercial power into 12V alternating current, and then the 12V alternating current is converted into about 10.4V direct current through a rectifier consisting of a capacitor and 4 diodes.

The DC-DC circuit of the transmitting device consists of a voltage reduction chip, a capacitor, a resistor, an inductor and a diode. The voltage after the AC-DC conversion is input into a DC-DC voltage reduction circuit consisting of a resistor, a capacitor, an inductor, a diode and an MP1584N chip, so that the output voltage is stabilized at 5V.

The DC-DC circuit of the receiving device consists of a boosting chip, a capacitor, a resistor, an inductor and a diode. The voltage output by the dry battery is supplied to a DC-DC boost lamp consisting of a resistor, a capacitor, an inductor, a diode and an SX1308 chip, so that the output voltage is stabilized at 5V.

The voltage stabilizing circuit of the sending and receiving device is an LDO voltage stabilizer composed of a capacitor and RT9013-33GB, and has ultra-low noise, ultra-fast internal CMOS response and 3.3V fixed output. The voltage fluctuation caused by MOS fast switching inside the step-up/step-down chip of the DC-DC circuit can be reduced.

The temperature and humidity sensor is an Othon DHT11 digital temperature and humidity sensor, and is a composite sensor with calibrated digital signal output inside. The sensor has the characteristics of stability, quick response and anti-interference performance.

The light intensity measurement module is a BH1750 illumination sensor.

The alarm circuit consists of an N-channel MOS tube, a pull-down resistor and a passive buzzer, wherein the grid electrode of the MOS tube is connected to a control pin of the singlechip, and the pull-down resistor is connected with the grid electrode and the ground; the source electrode is connected with the ground; the drain electrode is connected with the negative electrode of the passive buzzer, and the 5V power supply is connected with the positive electrode of the passive buzzer. The buzzer can be controlled to give an alarm only by outputting a 2KHz square wave signal by the singlechip.

The FLASH, namely the internal FLASH area of STM32F103C6T6, combines the advantages of ROM and RAM, not only has the function of Electrically Erasable and Programmable (EEPROM), but also can quickly read data.

And the power supply of the cooling equipment, the humidifying equipment, the heating equipment and the illuminating equipment is controlled by a relay. The relay is a point control device, which utilizes the electromagnetic induction phenomenon to generate magnetic force when the electromagnet is electrified and the magnetic force disappears when the electromagnet is powered off, so as to control the attraction and the release of a circuit at the other side of high voltage and high current. The characteristic of strong current control by weak current can be realized, the separation of a digital circuit and an analog circuit is realized, and the digital circuit is better protected.

The heating device adopts a semiconductor heating sheet, the cooling device adopts a semiconductor cooling sheet, the humidifying device adopts an atomizer, and the illuminating device adopts an energy-saving LED lamp. The heating equipment, the cooling equipment, the humidifying equipment and the lighting equipment can be started or closed after the control key is manually pressed at the receiving end, and are not influenced by automatic threshold control during the operation, and the automatic threshold control program can not be restarted until a worker presses the key control key for a long time.

The use method of the system is as follows, when the system is started, the relative altitude of the current greenhouse can be measured by the atmospheric pressure measuring sensor, and reasonable upper and lower limits of temperature and humidity threshold values are automatically set according to the current altitude. The temperature and humidity acquisition module can acquire temperature and humidity data in the current greenhouse in real time; the light intensity sensor can acquire the environment light intensity analog value in real time and convert the environment light intensity analog value into a light intensity actual value. The singlechip acquires the three data, and controls the wireless communication module to transmit the three data to the receiving end after the three data are processed and stably output by filtering operation inside the singlechip. The staff can observe the humiture and the illumination condition in the big-arch shelter at this moment in real time through the OLED display screen of receiving terminal. When the working personnel think that the behavior such as heating, cooling, humidification, turning on or off lighting equipment needs to be carried out in the big-arch shelter this moment, the staff can be manual press corresponding mode selection button on the one hand and carry out humiture, the threshold value of illumination intensity sets for, and on the other hand the staff can press the control button of corresponding equipment and directly control corresponding controlgear immediately.

An AC-DC circuit in a transmitting device comprises a power supply, a transformer and a bridge rectifier circuit formed by 4 diodes, wherein the input end of the power supply is connected with the positive pole of a mains supply, a port 3 is connected with the negative pole of the power supply, the transformer is respectively connected with the positive pole and the negative pole of the power supply, meanwhile, the transformer is connected with a capacitor in parallel, the other end of the transformer is connected with the capacitor and the bridge rectifier circuit in parallel, a capacitor C3 is connected in series between diodes D2 and D4 and between diodes D1 and D3 in the bridge rectifier circuit, 12V voltage is output between diodes D2 and D4, a 12V voltage power supply is connected with C4 in series and then grounded, a pin 7 in a voltage-reducing chip U7 is connected with 12V voltage, a resistor R1 is connected between a pin 2 of the voltage-reducing chip, one end of a resistor R2 is connected between the pin R1 and a pin 2 of the voltage-reducing chip, the other end of the resistor R2 is grounded, a pin 6 of the voltage-reducing chip is connected with a resistor R3 in series and then grounded, the GND pin is grounded, the pin 3 of the voltage reduction chip is connected with a capacitor C6 in series and then is grounded with a resistor R4, the pin BST is connected with a capacitor C5 in series and then is connected with the pin U81 of the linear voltage stabilization chip after being connected with an inductor L1 in series, the pin 1 of the voltage reduction chip is connected between a capacitor C5 and an inductor L1, the pin 4 of the voltage reduction chip is connected with a resistor R6 in series and then is connected between the inductor L1 and the pin 1 of the linear voltage stabilization chip U8, wherein one end of the resistor R6 is connected with one end of the resistor R5 between the pin 4 of the voltage reduction chip, the other end of the resistor R5 is grounded, the other end of the resistor R6 is connected with the anode of the diode D5, the cathode of the diode D5 is grounded, meanwhile, the connection node of the resistor R6 and the diode D5 is connected between the inductor L1 and the pin 1 of the buck chip, one end of a capacitor C7 is connected between the resistor R6 and the inductor L1, the other end of the capacitor C7 is connected with a grounding end, a pin 2 in the linear voltage stabilization chip U8 is grounded, a pin 5 of the linear voltage stabilization chip is connected with the capacitor C8 in series and then grounded, and meanwhile, 3V3 voltage is output at the pin 5 of the linear voltage stabilization chip.

As shown in fig. 3 to 6, the specific structure of the transmitting device: the circuit mainly comprises a rectification circuit consisting of a transformer T1, diodes D1, D2, D3 and D4 and a voltage reduction chip U7, wherein the voltage reduction chip U7 adopts MP1584EN and a linear voltage regulation chip U8, the linear voltage regulation chip U8 adopts RT9013-33GB and a capacitor, a resistor, an inductor and a diode, a power input end 1 of the circuit P0 is connected with the anode of a 220V alternating current power supply, a pin 3 is connected with the cathode of the 220V alternating current power supply, a stable direct current 3.3V voltage is output at a pin 5 of the U8 linear voltage regulation chip after the circuit passes through, the pin 5 and the pin 2 are connected with a power input end 48 and a pin 47 of a master control chip U1, a power input end 4 and a pin 1 of a program programming port P1 of the master control chip, power input ends 1 and a pin 3 of a temperature and humidity sensor J1, and power input ends of an illumination intensity sensor J2, and power input ends 1 and a pin 3 of the master control chip J2, The power input ends 1 and 3 of the atmospheric pressure sensor J3, the power input ends 1 and 2 of the temperature reduction device relay U2, the power input ends 1 and 2 of the temperature rise device relay U3, the power input ends 1 and 2 of the humidification device relay U4, the power input ends 1 and 2 of the lighting device relay U5 and the power input ends 2 and 1 of the wireless transmission module U6 are connected with the printed circuit board through power lines. The control pins of 30, 31, 32 and 33 of the singlechip main control chip U1 are respectively connected with the lighting device relay U5, the humidifying device relay U4, the heating device relay U3 and the cooling device relay U2 on a printed circuit board through signal lines, the pins of 13, 14, 15, 16 and 19 of the singlechip main control chip U1 are respectively connected with the pins of 3, 4, 5, 6 and 7 of the wireless transmission module U6 on the printed circuit board through signal lines, the pin of 18 of the singlechip main control chip U1 is connected with the printed circuit board of 8 pins of the wireless transmission module U6 through signal lines, and the pins of 10, 11 and 39 of the singlechip main control chip U1 are respectively connected with the pins of 2 of the temperature and humidity sensor J1, the pin 2 of the illumination intensity sensor J2 and the pin 3 of the atmospheric pressure sensor J3 on the printed circuit board through signal lines.

A power supply 1 pin of a DC-DC circuit in the receiving device is connected with a 5 pin in a boost chip SX1308 in series, a power supply 2 pin is grounded, one end of a capacitor C2 is connected between the power supply 1 pin and the 2 pin in the boost chip SX1308, the other end of the capacitor C2 is grounded, the boost chip 1 pin is connected with an inductor L1 in series and then connected with the boost chip 5 pin, wherein L1 is connected between a capacitor C2 and the boost chip 5 pin, a boost chip 3 pin is connected with a resistor R6 in series and then grounded, meanwhile, a resistor R7, a diode D0 and a boost chip 1 pin are connected between the boost chip 3 pin and a resistor R6 in series, and the boost chip 1 pin is connected with the cathode of a diode D0; the resistor R7 is connected with the resistor R6 in parallel with the capacitor C1, 5V voltage is output between the resistor R7 and the capacitor C1, a pin of the voltage stabilizing chip 1 is connected with the capacitor C3 in series and then is grounded, a 5V voltage power supply is output between the pin of the voltage stabilizing chip 1 and the capacitor C3, a grounding section of the voltage stabilizing chip is grounded, a pin of the voltage stabilizing chip 5 is connected with the capacitor C4 in series and then is grounded, and 3V3 voltage is output between the pin of the voltage stabilizing chip 5 and the capacitor C4.

As shown in fig. 7 to 10, the receiving apparatus has a structure that the DC-DC, linear regulator LDO circuit is mainly composed of a boost chip U9, wherein the boost chip U9 adopts SX1308, a linear regulator chip U10, wherein the linear regulator chip U10 adopts RT9013-33GB, and capacitors, resistors, inductors, and diodes. The power input end 1 of the circuit P2 is connected with the anodes of the two dry batteries, the pin 2 is connected with the cathodes of the two dry batteries, stable direct current 3.3V voltage is output at the pin 5 of the U10 linear voltage stabilization chip after passing through the circuit, the pin 5 and the pin 2 are connected with the power input ends 48 and 47 of the singlechip main control chip U12, the program programming port P3 of the singlechip main control chip, the power input ends 2 and 1 pin of the wireless transmission module U11, the power input ends 1 and 3 pin of the buzzer seat P3, and the

power input end

2 and 1 pin of the OLED display screen module P5 are respectively connected with the printed circuit board through power lines.

Pins

13, 14, 15, 16 and 19 of the singlechip master control chip U12 are respectively connected with

pins

3, 4, 5, 6 and 7 of the wireless transmission module U11 on a printed circuit board through signal lines as control pins, pins 18 of the singlechip master control chip U12 are respectively connected with pins 8 of the wireless transmission module U11 on the printed circuit board through signal lines as input pins, pins 2 of the singlechip master control chip U12 are respectively connected with pins 2 of the buzzer seat on the printed circuit board through signal lines as control pins, pins 42 and 43 of the singlechip master control chip U12 are respectively connected with

pins

3 and 4 of the OLED display screen module P5 on the printed circuit board through signal lines as control pins, pins 32, 33, 35, 36 and 40 of the singlechip master control chip U12 are respectively connected with the input end of the LED circuit on the printed circuit board through signal lines as control pins, pins 22, 6, and 7 of the singlechip master control chip U12, 25.

Pins

26, 27, 28, 29, 30 and 31 are used as input pins and output ends of the keys are respectively connected with the printed circuit board through signal lines.

The operation flow of the transmission apparatus will be explained based on the structures shown in fig. 3 to 6: the 220V alternating current outputs about 10.4V direct current through an AC-DC circuit formed by a transformer and a diode, then the about 10.4V direct current is input into a voltage reduction chip U7, the voltage reduction chip U7 adopts a DC-DC voltage reduction circuit formed by taking MP1584EN as a main body to convert the 12V direct current into 3.5V direct current, finally the 3.5V direct current is input into a linear voltage stabilization chip U8, and the linear voltage stabilization chip U8 adopts RT9013-33GB to output stable 3.3V direct current to provide power supply input for a singlechip main control chip U1, a temperature and humidity sensor J1, an illumination intensity sensor J2, an atmospheric pressure sensor J3, a temperature reduction equipment relay U2, a temperature rise relay U3, a humidification relay U4, an illumination equipment relay U5 and a wireless transmission module U6. After the singlechip is electrified and initialized, the singlechip firstly reads an internal corresponding register to judge whether the starting is caused by electrifying again after power off or pressing a reset circuit; if the power is off and then the power is on again, the single chip microcomputer initializes the atmospheric pressure sensor J3, automatically sets an initial value of temperature and humidity according to the current atmospheric pressure value by reading data output by the atmospheric pressure sensor according to an internal air pressure-temperature and humidity marking algorithm, and otherwise, the single chip microcomputer reads the upper and lower limits of the stored temperature, humidity and illumination intensity threshold values from an internal FLASH. And then the single chip microcomputer respectively sends control signals to sequentially complete initialization through signal wires connected with a temperature and humidity sensor J1, an illumination intensity sensor J2, an atmospheric pressure sensor J3, a cooling device relay U2, a heating relay U3, a humidifying relay U4, a lighting device relay U5 and a wireless transmission module U6. When the system works, the temperature and humidity sensor J1 collects temperature and humidity data in the current greenhouse in real time, and the illumination intensity sensor J2 collects illumination intensity data of the environment where the current greenhouse is located in real time. Then the single chip microcomputer reads the data through

pins

10, 11 and 39, processes the data in the single chip microcomputer, controls the wireless transmission module U6 to send the processed data to a remote receiving device through a signal wire connected to the wireless transmission module U6, and a worker can check the temperature and humidity conditions and the illumination intensity conditions in the current greenhouse in real time through the receiving device. When the data collected in the greenhouse exceeds the threshold range of the current data, the single chip microcomputer can immediately judge which data is abnormal, and controls the corresponding relays to attract and release through signal lines connected to the lighting device relay U5, the humidifying device relay U4, the heating device relay U3 and the cooling device relay U2, so that the cooling device, the humidifying device, the heating device and the lighting device are controlled to be started and closed, and the single chip microcomputer controls the wireless transmission module U6 to send the specific working states of the current control cooling device, the humidifying device, the heating device and the lighting device.

The following explains the operation of the receiving apparatus according to the specific structure of the receiving apparatus shown in fig. 6 to 10: the two dry batteries are used as power supply input and pass through a boosting chip U9, wherein the boosting chip U9 adopts a DC-DC boosting circuit which is formed by an SX1308 main body to convert input voltage provided by the two dry batteries into 5V direct current, finally the 5V direct current is input into a linear voltage stabilizing chip U10, and the linear voltage stabilizing chip U10 adopts RT9013-33GB to output stable 3.3V direct current to provide power supply input for a single chip microcomputer main control chip U12, a wireless transmission module U11, a buzzer seat P4 and an OLED display screen module P5. After the single chip microcomputer is electrified and initialized, control signals are respectively sent through signal lines connected with the power supply input ends of the wireless transmission module U11 and the OLED display screen module P5 to sequentially complete initialization. When the system works, the wireless transmission module U11 establishes connection with the wireless transmission module U6 of the sending device, and receives data from the wireless transmission module U6 of the sending device, such as: the data of the current temperature and humidity and the illumination intensity, the upper and lower limits of the current temperature and humidity threshold value and the upper and lower limits of the illumination intensity threshold value, and the starting and closing conditions of the cooling equipment, the humidifying equipment, the heating equipment and the illuminating equipment. The single chip microcomputer reads data received by the wireless transmission module U11, the data of the current temperature and humidity and the illumination intensity, the upper and lower limits of the current temperature and humidity threshold and the upper and lower limits of the illumination intensity threshold are sent to the OLED display screen module P5, and the current temperature, the corresponding upper and lower limits, the current humidity, the corresponding upper and lower limits, the current illumination intensity and the corresponding upper and lower limits are respectively displayed on the first three lines and the second three lines of the OLED display screen; the singlechip sends control signals to the input end of the LED circuit according to the starting and closing conditions of the cooling device, the humidifying device, the warming device and the illuminating device, the LEDs corresponding to the working state of the cooling device, the humidifying device, the warming device and the illuminating device can be turned on, otherwise, the corresponding LEDs can be turned off, and a worker can judge the real-time condition in the current greenhouse according to the OLED display screen and the LEDs. If the received data exceeds the set threshold range, the singlechip master control chip U12 sends a 2Khz square wave signal to the input pin of the buzzer seat P4 to control the buzzer to alarm, and at this time, the last line of the OLED display screen displays current alarm information, such as: if the current temperature is lower than the set value, the current temperature is too low, and the display is finished! ! "is detected. If the worker chooses to ignore the alarm response, because the equipment in the greenhouse starts to work to respond to the alarm at the moment, a key corresponding to an alarm circuit in the key circuit can be pressed, when the key is pressed once, the alarm is turned off for 10 minutes temporarily, and after the time is up, if the environmental data in the greenhouse still exceeds the corresponding threshold range at the moment, the alarm circuit rings again to prompt the worker; when the key corresponding to the alarm circuit in the key circuit is pressed for a long time, the alarm is turned off for 24 hours. The receiving device gives the staff the right of directly controlling the cooling equipment, the humidifying equipment, the warming equipment and the lighting equipment to start and close, when the staff presses down the keys corresponding to the cooling equipment, the humidifying equipment, the warming equipment and the lighting equipment, the equipment corresponding to the equipment at the moment can be directly closed if running, the equipment corresponding to the equipment at the moment can be directly started if the equipment is in a closed state at the moment, the influence of automatic regulation and control of the sending end can not be received, the last LED of the LED circuit can be lightened at the moment, and the current manual operation is carried out. If the operation is finished, the worker only needs to press any one of the control keys for a long time to indicate that manual control is not carried out, and meanwhile, the last LED of the LED circuit is turned off; if the operator forgets to release the manual operation, the receiving end system will automatically release the manual operation two minutes after the last operation. If the worker wants to change the upper and lower threshold values corresponding to certain data, the worker can press the mode selection key corresponding to the key circuit, at the moment, the upper temperature threshold value on the OLED screen flickers, the temperature upper limit value is selected to be changed, the worker can conveniently judge which threshold value is specifically modified currently, the worker can change the specific threshold value needing to be operated by pressing the mode selection key for many times, and then the worker can press the threshold value plus key or the threshold value minus key to change the size of the current threshold value. The invention can ensure that greenhouse crops in arid mountainous areas can grow in a proper temperature, humidity and illumination environment, and reduce the pressure of related workers, thereby achieving the aim of unattended operation even by few people.

Fig. 10, the receiving device LED circuit and the key circuit specifically function: the S1 key can control the on and off of the temperature rising equipment; when the temperature raising device is in operation, the temperature raising device can be turned off by pressing the S1 key, or when the temperature raising device is in the off state, the temperature raising device can be turned on by pressing the S1 key. The working state of the temperature raising device can be judged by a light emitting diode D7; d7 light indicates the warming device is operating and D7 light indicates the warming device has been turned off. The S2 key, the S3 key and the S4 key respectively represent control keys of cooling equipment, humidifying equipment and lighting equipment, and the control mode is the same as that of the S1 key; the operation state of the equipment controlled by each key can be judged by the light emitting diodes D8, D9 and D10 respectively in the same way as the light emitting diode D7. When one of the keys S1, S2, S3 and S4 is pressed arbitrarily, the system enters a manual control mode, the light emitting diode D11 is lightened, and the system cannot turn on or off the temperature raising device, the temperature reducing device, the humidifying device and the illuminating device according to the threshold value. If the user wants to exit the mode, the user needs to press one of the S1, S2, S3 and S4 keys for 3 seconds, at the moment, the light-emitting diode D11 is turned off, and the manual control mode exits. Pressing the S5 button can select the threshold value to be changed; the method comprises the steps that an S5 key is pressed for 3 seconds to enter a threshold selection mode, an upper temperature threshold is selected by default, at the moment, a threshold corresponding to the upper temperature limit on an OLED display screen flickers, an S5 key is pressed again, and a lower temperature threshold is selected; pressing the S5 key again to select the upper limit threshold of humidity; pressing the S5 key again to select the lower limit threshold of humidity; and when the S5 key is pressed again, returning to the upper temperature limit threshold, and the like. And the S5 key is pressed for 3 seconds again to exit the threshold selection mode, and the threshold corresponding to the selection threshold on the OLED display screen stops flashing. The S6 key and the S7 key respectively indicate an addition operation and a subtraction operation of a threshold value. When the S5 key is pressed to select the threshold value corresponding to the desired change, the S6 key or the S7 key is pressed again, and the corresponding threshold value is increased or decreased. The S8 key can control the time of alarm, when the threshold value exceeds the corresponding range, the buzzer generates alarm sound, and the S8 key can be pressed to select to turn off the alarm sound for 10 minutes; or pressing the S8 button for a long time of 5 seconds to select to turn off the alarm sound for 24 hours.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a long-range system of observing and controling of big-arch shelter environment suitable for arid mountain area which characterized in that includes:

a transmitting device and a receiving device, wherein,

2. The system of claim 1, wherein:

the transmission apparatus includes: the system comprises a sending end control unit, a sending end communication unit, a sensing module, a sending end power management circuit, a relay control circuit and a sending end reset circuit;

3. The system of claim 1, wherein:

the receiving apparatus includes: the device comprises a receiving end control unit, a receiving end communication unit, a display circuit, a receiving end power management circuit, an LED circuit, a key circuit, an alarm circuit and a receiving end reset circuit;

4. The system of claim 2, wherein:

the sensing module comprises an atmospheric sensor, a temperature and humidity sensor and an illumination sensor.

5. The system of claim 2, wherein:

the power management circuit of the sending end comprises an AC-DC conversion circuit, a first conversion circuit and a first voltage stabilizing circuit

6. The system of claim 3, wherein:

the receiving end power management circuit comprises a power supply, a second conversion circuit and a second voltage stabilizing circuit

The power supply adopts dry batteries;

7. The system of claim 2, wherein:

the relay control circuit is connected with an environment control device, wherein the environment control device comprises a cooling device, a humidifying device, a warming device and a lighting device.

8. The system of claim 1, wherein:

the receiving device also has a storage function, and data is stored in a built-in FLASH of the single chip microcomputer, so that the receiving device has the characteristic of no loss in power failure.