CN117378368A - Intelligent grain temperature regulating and controlling method for air conditioner with protection mechanism and fault tolerance mechanism - Google Patents

Abstract

An intelligent grain temperature regulating and controlling method for an air conditioner with a protection mechanism and a fault tolerance mechanism is disclosed, and the air conditioner and the internal circulation fan are protected from being damaged according to an air conditioner starting control logic flow, an air conditioner stopping control logic flow, an internal circulation fan starting logic control sub-flow, an internal circulation fan stopping logic control sub-flow, an electric valve opening flow and an electric valve closing flow.

Description

Intelligent grain temperature regulating and controlling method for air conditioner with protection mechanism and fault tolerance mechanism

Technical Field

The invention relates to the technical field of grain temperature regulation and control of high and large flat houses, in particular to an intelligent grain temperature regulation and control method of an air conditioner with an equipment protection mechanism and a fault tolerance mechanism.

Background

The green grain storage is the direction of grain storage development, and in the south of China, the air conditioner is applied to controlling the temperature of grain piles more and more commonly, and the quantity of the air-cooled air conditioner is far more than that of the water-cooled air conditioner due to the water resource problem.

An air conditioner in the air bag regulates and controls a surface grain temperature system, and the air conditioner cold air is sent to the surface layer of the grain pile in the air bag by depending on a local internal circulation pipe network arranged on the grain surface, so that the purpose of directly reducing the surface grain temperature can be realized; the air conditioner regulates and controls the peripheral grain temperature system, and the air conditioner cold air is sent to the periphery of the grain pile by depending on a local internal circulation pipe network arranged around the inner wall of the bin, so that the aim of directly reducing the grain temperature around can be fulfilled. The equipment such as an electric valve, an inner circulation fan and the like is matched on the local inner circulation pipe network due to various reasons such as reducing the energy consumption of the air conditioner, avoiding the damage of the air conditioner caused by fumigation, avoiding the obstruction of the use of other grain storage technologies, overcoming the resistance of grain layers and the like.

Most grain stores have the characteristics of aging of warehouse management personnel and low cultural level, and the reduction operation is completed by combining with grain change to control an air conditioner, an electric valve and an inner circulation fan, so that the method is quite unrealistic; the running energy consumption of the air-cooled air conditioner in a relatively low-temperature environment is obviously lower than that in a relatively high-temperature environment, and the air-cooled air conditioner is started at night to control the temperature and violate the normal work and rest time of warehouse management staff.

The system for regulating and controlling the grain temperature of the air conditioner is matched with the temperature control software of the air conditioner, and the temperature can be controlled efficiently through intelligent decision making, automatic control and automatic control flow.

The smoothness of the internal circulation air path is the premise of starting the air conditioner and the internal circulation fan, and the shutdown of the air conditioner and the internal circulation fan is the premise of cutting off the internal circulation air path, otherwise, the air conditioner and the internal circulation fan are inevitably damaged. Therefore, the air conditioner temperature control software is required to be provided with a device protection mechanism. The equipment protection mechanism must be based on the real-time running state of air conditioner, electric valve and internal circulation fan.

The automatic control and real-time operation state of the air conditioner, the electric valve and the inner circulation fan are required to depend on electronic components, and even the electronic components with excellent performance can be damaged. The real-time running state of the electric valve is directly related to the internal circulation gas circuit/cut-off, the real-time running state is reasonably utilized to judge the fault degree, namely the fault tolerance mechanism in the process of controlling equipment by air conditioning temperature control software, and the defect that the air conditioning and the internal circulation fan cannot work due to the fact that the electric valve is not in place opened is avoided, so that the grain temperature control is unfavorable.

In order to solve the above problems, it is needed to provide an intelligent grain temperature regulating and controlling method for an air conditioner with an automatic equipment control with a protection mechanism and a fault tolerance mechanism.

Disclosure of Invention

The invention aims to provide an intelligent grain temperature regulating and controlling method for an air conditioner with a protection mechanism and a fault tolerance mechanism and for equipment control automation, which is used for protecting an air conditioner and an internal circulation fan from being damaged according to an air conditioner starting control logic flow, an air conditioner stopping control logic flow, an internal circulation fan starting logic control sub-flow, an internal circulation fan stopping logic control sub-flow, an electric valve opening flow and an electric valve closing flow; and meanwhile, the fault-tolerant electric valve is not opened in place and is not in functional failure, and an air conditioner and an internal circulation fan are started to control the grain temperature.

In order to solve the technical problems, the specific technical scheme of the invention is as follows:

the intelligent grain temperature regulating and controlling method of the air conditioner with the protection mechanism and the fault tolerance mechanism is characterized by comprising the following steps:

step 1: dividing the granary into a plurality of independent temperature control areas according to the arrangement position of air conditioners, wherein the air conditioners are arranged outside the granary and are connected with a circulation pipe network in the granary through an outside air supply main pipe and an outside air return main pipe, an electric valve is arranged on an air flow loop of the circulation pipe network to automatically open or cut off the air flow loop according to the temperature control requirement, and an air supply electric valve and an air return electric valve are respectively arranged on the outside air supply main pipe and the outside air return main pipe;

Step 2: establishing a one-to-one correspondence between the air-conditioner temperature control system and each temperature control area and between the air-conditioner temperature control system and equipment in the temperature control area; each area in the granary is independently controlled in a time sharing manner, so that fault tolerance of equipment is realized, and the equipment fault in one area is ensured not to influence the operation of temperature control equipment in other areas in the same granary;

step 3: the open and close states of the electric valve are monitored, the air conditioner temperature control system judges the 'smooth or cut-off' state of the airflow loop of the circulation pipe network according to the real-time state of the electric valve, judges the fault degree of the electric valve, and starts related equipment on the air conditioner and the circulation pipe network to the greatest extent so as to realize fault tolerance of the electric valve;

step 4: executing an air conditioner starting control logic flow, starting an air conditioner, ensuring the smoothness of a circulation pipe network air path, and cooling a grain pile; meanwhile, the temperature of the surface of the grain pile is used as a temperature control condition, so that the equipment cannot operate due to abnormal temperature and humidity of the grain pile;

step 5: changing the open-close state of part of equipment in the circulation pipe network, and adjusting the flow direction of the air channel to cool the periphery of the grain pile;

step 6: and after the set temperature is reached, executing an air conditioner shutdown control logic flow to shut down the air conditioner for energy saving.

Further, the circulation pipe network in the granary in the step 1 comprises an airflow loop a for controlling the granary temperature and the grain temperature on the surface layer of the grain pile and an airflow loop b for controlling the grain temperature around the grain pile, and the electric valve arranged on the circulation pipe network comprises an electric valve 1 and an electric valve 2;

The air flow loop a comprises an air conditioner, an external air supply main pipe, an external air return main pipe and universal nozzles, and the external air supply main pipe penetrates through a cabin wall and is connected with an air supply branch pipe; the outside-cabin return air main pipe penetrates through the cabin wall and is connected with an air conditioner return air inlet arranged in the cabin; the electric valve 1 is arranged on an air supply branch pipe, and a plurality of universal nozzles are arranged on the air supply branch pipe;

the air flow loop a is circulated along the path of an air conditioner, an out-bin air supply main pipe, an air supply branch pipe, a universal nozzle, a bin room, an air conditioner return air inlet, a return air main pipe and an air conditioner;

the airflow loop b comprises an out-bin air supply main pipe, an out-bin air return main pipe and an air supply vertical pipe; the main air supply pipe outside the cabin penetrates through the cabin wall and is connected with the air supply vertical pipe; an electric valve 2 and an inner annular fan are arranged on the air supply vertical pipe, one end of the air supply vertical pipe is connected with an outlet in a cabin of an air supply main pipe outside the cabin, and the other end of the air supply vertical pipe is connected with a horizontal air distribution branch pipe;

the air flow loop b is circulated along the path of air conditioning, main air supply pipe, vertical air supply pipe, horizontal air distribution branch pipe, cabin space, air conditioning return air inlet, main return air pipe and air conditioning;

the electric valve 1, the electric valve 2, the air supply electric valve and the return air electric valve are respectively provided with an opening limit sensor and a Guan Xianwei sensor;

The air conditioner, the inner annular flow fan, the electric valve 1, the electric valve 2, the opening limit sensor and the Guan Xianwei sensor are respectively connected with the measurement and control terminal and are integrally controlled by the measurement and control terminal.

Further, the open/close state of the electric valve in the step 3 is determined when the electric valve is opened or closed;

the opening flow of the electric valve 1 is as follows:

opening the electric valve 1, and detecting the real-time state of the electric valve 1;

if the electric valve 1 is in the closed state, recording the open fault of the electric valve 1, alarming the fault, and returning to the original operating point of the main flow;

if the electric valve 1 is in the state of not closing in place, judging whether the electric valve 1 is in place or not;

if the electric valve 1 is in a state of not being opened in place, recording that the electric valve 1 is not opened in place, giving a fault alarm, and opening an airflow loop a;

if the electric valve 1 is in an in-place state, the airflow loop a is opened, and the original operating point of the main flow is returned;

the closing flow of the electric valve 1 is as follows:

closing the electric valve 1, and detecting the real-time state of the electric valve 1;

if the electric valve 1 is in an unopened state, recording the closing fault of the electric valve 1, giving an alarm on the fault, and closing the air flow loop a;

if the electric valve 1 is in the closed state, the air flow circuit a is closed, and the original operating point of the main flow is returned.

Further, the air conditioner starting control logic flow in the step 4 is as follows:

opening a return air electric valve and an air supply electric valve corresponding to the air conditioner;

acquiring the real-time state of the return air electric valve through a limit sensor and a Guan Xianwei sensor;

if the return air electric valve is in a closed state, recording faults, closing the return air electric valve and the air supply electric valve, and giving fault alarm;

if the return air electric valve is in the state of not closing in place, further judging whether the return air electric valve is in the state of opening in place;

if the return air electric valve is in a state of being opened in place, acquiring the real-time state of the air supply electric valve;

if the return air electric valve is in a state of not being opened in place, recording faults, carrying out fault alarm, and further obtaining the real-time state of the air supply electric valve;

further judging whether the air supply electric valve is in a closed state, if so, recording faults, closing the return air electric valve and the air supply electric valve, and carrying out fault alarm;

if the air supply electric valve is not closed in place, judging whether the air supply electric valve is in an open in-place state, and if the air supply electric valve is open in place, supplying power to the air conditioner to acquire an air conditioner power supply state;

if the air supply electric valve is not closed in place and is not opened in place, recording faults, giving a fault alarm, and further supplying power to the air conditioner to obtain the power supply state of the air conditioner;

And finally, judging whether the power supply of the air conditioner is successful, if not, powering off the air conditioner, recording faults, closing the return air electric valve and the air supply electric valve, and carrying out fault alarm.

Further, the logic flow of the air conditioner control in the step 6 is as follows:

powering off the air conditioner, and confirming that the air conditioner is in a stop state;

closing the return air electric valve and the air supply electric valve to obtain the power supply state of the air conditioner;

judging the closing state of the return air electric valve, if the return air electric valve is not closed in place, recording faults, carrying out fault alarm, and further obtaining the real-time state of the air supply electric valve;

if the return air electric valve is closed in place, acquiring the real-time state of the air supply electric valve;

judging the closing state of the air supply electric valve, if the air supply electric valve is not closed in place, recording a fault, carrying out fault alarm, and returning to the main flow;

if the air supply electric valve is closed in place, the main flow is directly returned.

Further, when the airflow loop a needs to be opened, executing the air conditioner starting control of the peripheral grain temperature system, and the specific method is as follows:

judging whether the air conditioner has faults according to the fault maintenance/protection records, if so, carrying out linkage alarm, and returning to the original operating point of the main flow;

if no fault exists, further judging whether the opening of the electric valve 1 has the fault or not according to the fault maintenance/protection record, and if the opening has the fault, carrying out linkage alarm and returning to the original operating point of the main flow;

If no fault exists, opening an electric valve 1 corresponding to the air conditioner;

detecting the real-time state of the electric valve 1, if the electric valve 1 is closed in place, recording the open fault of the electric valve 1, closing the electric valve 1, alarming the fault, and returning to the original operating point of the main flow;

if the state of the electric valve 1 is not closed in place, further detecting that the electric valve 1 is opened in place, if the state of the electric valve 1 is not opened in place, recording that the electric valve 1 is not opened in place, carrying out fault alarm, and supplying power to an air conditioner;

if the electric valve 1 is in the on-position state, the air conditioner is directly powered;

further detecting the power supply state of the air conditioner, if the power supply fails, powering off the air conditioner, recording the power supply failure of the air conditioner, closing the electric valve 1, alarming the failure, and returning to the original operating point of the main flow;

if the power supply is successful, the state of the airflow loop a is recorded: and (3) unblocking.

Further, when the airflow loop a needs to be closed, the air conditioner closing control of the peripheral grain temperature system is executed, and the specific method is as follows:

powering off the air conditioner, confirming that the air conditioner is stopped, and closing an electric valve 1 corresponding to the air conditioner;

detecting the real-time state of the electric valve 1, if the electric valve 1 is not in place, recording the closing fault of the electric valve 1, alarming the fault, and returning to the original operating point of the main flow;

if the electric valve 1 is in the closed state, the air conditioner is stopped.

Further, in the step 5, the specific control flow of the airflow circuit a and the airflow circuit b when the switching is required is as follows:

when the T=Nt 2 is met, acquiring air conditioner operation data, and when the air conditioner is in a standby state, entering standby management and control;

when the air conditioner is in a normal running state, the running environment is analyzed, and whether the condition of reducing the cabin temperature is met or not is judged in a relatively high-temperature environment;

if yes, judging the state of the internal circulating fan, and executing a C11 shutdown process when the internal circulating fan is in a starting state; if the inner circulating fan is in a stop state, calling C12 to execute air conditioner stop;

if the condition of reducing the bin temperature is not met, calling C02;

when the air conditioner is in a relatively low-temperature environment, judging whether the air flow loop a is smooth, if so, judging whether a bin temperature reduction starting condition 2 is met, and if not, calling C02; if yes, opening an electric valve, and calling C02;

judging whether a cabin temperature reduction pause condition 2 is met when the airflow loop a is unblocked, if so, further looking at the state of the inner circulation fan, if so, closing the air conditioner, if so, further judging whether the surrounding inner circulation pause condition is met, if not, closing the electric valve, and then calling C02; if the management inner loop flow fan is satisfied;

If the reduced bin temperature pause condition 2 is not satisfied, C02 is invoked.

Further, the logic control sub-flow of the inner loop flow fan is as follows:

judging whether the electric valve 2 has a fault according to the fault maintenance/protection record, if so, carrying out linkage alarm, and returning to the original operating point of the main flow;

if no fault exists, judging whether the inner ring flow fan has the fault according to the fault maintenance/protection record, if yes, carrying out linkage alarm, and returning to the original operating point of the main flow;

if no fault exists, opening the electric valve 2 in the area, and detecting the real-time state of the electric valve 2;

if the electric valve 2 is in a closed state, recording the open fault of the electric valve 2, further closing the electric valve 2, carrying out linkage alarm, and returning to the original operating point of the main flow;

if the electric valve 2 is in a state of being opened in place, the inner annular flow fan in the area is powered, and the real-time state of the inner annular flow fan is detected;

if the working voltage of the fan is equal to 0, recording a fan power supply fault, disconnecting the fan power supply, further closing the electric valve 2, carrying out linkage alarm, and returning to the original operating point of the main flow;

if the working voltage of the fan is greater than 0, further judging whether the working current of the fan is consistent with the rated current;

if the rated current does not accord with the rated current, recording a fan power supply fault, disconnecting the fan power supply, further closing the electric valve 2, carrying out linkage alarm, and returning to the original operating point of the main flow;

If the rated current is consistent with the rated current, the running state of the air conditioner, the return air temperature of the air conditioner, the supply air temperature of the air conditioner, the return air target temperature and the running state of the fan are recorded, and finally the original running point of the main flow is returned.

Further, the shutdown logic control sub-flow of the inner annular flow fan is as follows:

after the fan is powered off and the working voltage of the fan is confirmed to be equal to 0, the electric valve 2 is closed;

detecting the real-time state of the electric valve 2, if the electric valve 2 is in the non-closed state, recording the closing fault of the electric valve 2, alarming the fault, recording the running state of the air conditioner, the return air temperature of the air conditioner, the supply air temperature of the air conditioner, the return air target temperature and the running state of the fan, and returning to the original running point of the main flow;

if the electric valve 2 is in the closed state, the running state of the air conditioner, the return air temperature of the air conditioner, the supply air temperature of the air conditioner, the return air target temperature and the running state of the fan are directly recorded, and the original running point of the main flow is returned.

In practical application, if the internal circulation air path is cut off after the air conditioner is started, the following accidents are easily caused:

1. the air conditioner evaporator chamber blower burns out due to the blockage of the air path;

2. the grain safety is affected by dew condensation caused by too large temperature difference between the inside and the outside of the blast pipe;

3. the compressor life is shortened or even lost.

Therefore, the air conditioner can be started after the electric unblocked internal circulation air path is controlled, and meanwhile, the internal circulation air path can be controlled to be blocked after the air conditioner is stopped.

The technical scheme of the invention has the following advantages:

1. according to the air conditioner starting control logic flow, the air conditioner stopping control logic flow, the inner circulation fan starting logic control sub-flow, the inner circulation fan stopping logic control sub-flow, the electric valve opening flow and the electric valve closing flow, the air conditioner and the inner circulation fan are protected from being damaged.

2. The automation device is controlled by the subareas, and not the whole automation device is controlled by the whole bin. The single regional equipment failure only affects the operation of the regional equipment and is not related to other regions, so that the problem that the whole bin equipment cannot be used due to a few failed equipment is avoided.

3. The fault degree of the electric valve is distinguished through the electric valve opening limit sensor and the Guan Xianwei sensor, so that control protection and fault tolerance are realized. After the electric valve is opened, the electric valve is in a non-closing state but not in place, and the internal circulation gas circuit is not in a cutting-off state, so that an air conditioner or an internal circulation fan is allowed to be started; the internal circulation air circuit is in a cut-off state after the electric valve is opened, and an air conditioner or an internal circulation fan is not allowed to be started.

When the air conditioner or the inner circulation fan is required to be stopped in the grain temperature control process, the air conditioner or the inner circulation fan is stopped preferentially, and even if the valve is in an open state after the valve is closed, the control is not affected although the valve is in a fault.

4. When the bin temperature and humidity detection value is abnormal, the surface grain temperature control condition is used as a model condition. Avoid the abnormal temperature and humidity of the bin to cause the equipment to be unable to operate.

5. The air conditioner temperature control system automatically judges the 'smooth/cut-off' state of the air flow loop according to the real-time state of the electric valve, automatically judges the fault degree of the electric valve, adopts different countermeasures, and starts the air conditioner and the inner circulation fan to the maximum extent to reduce the surface grain temperature and the surrounding grain temperature.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed 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 other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an intelligent grain temperature control method for an air conditioner with a protection mechanism and a fault tolerance mechanism;

FIG. 2 is a schematic diagram of embodiment 2 of the present invention;

FIG. 3 is a schematic structural diagram of a measurement and control terminal set provided by the invention;

FIG. 4 is a schematic diagram of an air conditioner power control structure according to the present invention;

FIG. 5 is a schematic diagram of the power control structure of the electric valve according to the present invention;

FIG. 6 is a schematic diagram of a logic flow of the air conditioner start control provided by the present invention;

FIG. 7 is a schematic flow chart of the air conditioner shutdown control logic provided by the invention;

fig. 8 is a schematic diagram of an air conditioner start-up flow in embodiment 2;

FIG. 9 is a schematic diagram of an air conditioner shutdown procedure according to embodiment 2;

FIG. 10 is a schematic diagram of the logic flow of the startup control of the inner loop blower;

FIG. 11 is a schematic flow chart of the inner loop fan shutdown control logic;

FIG. 12 is a schematic diagram of an airflow circuit switching control flow scheme;

FIG. 13 is a schematic diagram of an electrically operated valve opening process;

FIG. 14 is a schematic diagram of an electrically operated valve closing flow;

FIG. 15 is a schematic view of the front face of the present invention;

fig. 16 is a schematic diagram of the side of the present invention.

A. The air conditioner air supply temperature and humidity sensor mounting position, the air conditioner return air temperature and humidity sensor mounting position, the outside air supply main pipe, the air supply branch pipe, the universal nozzle, the first electric valve, the air supply vertical pipe, the second electric valve, the inner ring flow fan, the horizontal air distribution branch pipe, the bin wall, the grain stacking line, the outside air return main pipe, the air conditioner return air inlet and the air conditioner.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings for a better understanding of the objects, structures and functions of the present invention.

Example 1

The intelligent grain temperature regulating and controlling method of the air conditioner 13 with the protection mechanism and the fault tolerance mechanism is characterized by comprising the following steps:

step 1: dividing the granary into a plurality of independent temperature control areas according to the arrangement position of an air conditioner 13, wherein the air conditioner 13 is arranged outside the granary and is connected with a circulation pipe network in the granary through an outside air supply main pipe 1 and an outside air return main pipe 11, an electric valve is arranged on an air flow loop of the circulation pipe network to automatically open or cut off the air flow loop according to the temperature control requirement, and an air supply electric valve and an air return electric valve are respectively arranged on the outside air supply main pipe 1 and the outside air return main pipe 11;

step 2: establishing a one-to-one correspondence between the temperature control system of the air conditioner 13 and each temperature control area and between the equipment in the temperature control area; each area in the granary is independently controlled in a time sharing manner, so that fault tolerance of equipment is realized, and the equipment fault in one area is ensured not to influence the operation of temperature control equipment in other areas in the same granary;

step 3: the open and close states of the electric valves are monitored, the temperature control system of the air conditioner 13 judges the 'smooth or cut-off' state of the airflow loop of the circulation pipe network according to the real-time state of the electric valves, the fault degree of the electric valves is judged, the air conditioner 13 and related equipment on the circulation pipe network are started to the greatest extent, and fault tolerance of the electric valves is realized;

Step 4: executing an air conditioner 13 to start a control logic flow, starting the air conditioner 13, ensuring the smoothness of a circulation pipe network air path, and cooling the surface of the grain pile; meanwhile, the temperature of the surface of the grain pile is used as a temperature control condition, so that the equipment cannot operate due to abnormal temperature and humidity of the grain pile;

step 5: changing the open-close state of part of equipment in the circulation pipe network, and adjusting the flow direction of the air channel to cool the periphery of the grain pile;

step 6: after the set temperature is reached, executing the shutdown control logic flow of the air conditioner 13 to shut down the air conditioner 13 for energy saving.

Example 2

As shown in fig. 1 and 2, a circulation pipe network in the granary comprises an airflow loop a for controlling the granary temperature and the grain temperature on the surface layer of the grain pile and an airflow loop b for controlling the grain temperature around the grain pile, and an electric valve arranged on the circulation pipe network comprises a first electric valve 4 and a second electric valve 6;

the air flow loop a comprises an air conditioner 13, an outside air supply main pipe 1, an outside air return main pipe 11 and a universal nozzle 3, wherein the outside air supply main pipe 1 passes through a bin wall 9 and is connected with an air supply branch pipe 2; the outside-cabin return air main pipe 11 passes through the cabin wall 9 and is connected with an air conditioner return air inlet 12 arranged in the cabin; the first electric valve 4 is arranged on the air supply branch pipe 2, and a plurality of universal nozzles 3 are arranged on the air supply branch pipe 2;

The air flow loop a circulates along the path of the air conditioner 13, the main air supply pipe 1 outside the cabin, the air supply branch pipe 2, the universal nozzle 3, the cabin room, the air conditioner return air inlet 12, the main air return pipe 11 outside the cabin and the air conditioner 13;

the airflow loop b comprises an out-bin air supply main pipe 1, an out-bin air return main pipe 11 and an air supply vertical pipe 5; the main air supply pipe 1 outside the cabin passes through the cabin wall 9 and is connected with the vertical air supply pipe 5; the second electric valve 6 and the inner annular fan 7 are arranged on the air supply vertical pipe 5, one end of the air supply vertical pipe 5 is connected with an outlet in the cabin of the main air supply pipe 1 outside the cabin, and the other end of the air supply vertical pipe is connected with the horizontal air distribution branch pipe 8;

the air flow loop b circulates along the paths of an air conditioner 13, an out-bin air supply main pipe 1, an air supply vertical pipe 5, a horizontal air distribution branch pipe 8, a bin room, an air conditioner return air inlet 12, an out-bin return air main pipe 11 and an air conditioner 13;

the first electric valve 4, the second electric valve 6, the air supply electric valve and the return air electric valve are respectively provided with an opening limit sensor and a Guan Xianwei sensor;

the air conditioner 13, the inner annular flow fan 7, the first electric valve 4, the second electric valve 6, the opening limit sensor and the Guan Xianwei sensor are respectively connected with a measurement and control terminal and are integrally controlled by the measurement and control terminal.

The measurement and control terminal is connected with the air conditioner 13 temperature control system, and the measurement and control terminal comprises: the system comprises a liquid crystal display control screen, a liquid crystal screen communication module, a network communication module, a wireless communication module, an EMC protection module, a 485 communication module, a MODBUS module, a temperature and humidity module, a central processing unit, a current management module and a safety protection module. The functions and the components of each module of the measurement and control terminal belong to the prior art, and are not described in detail herein.

Meanwhile, a temperature and humidity module of the measurement and control terminal integrates grain condition detection equipment such as grain pile temperature measurement cables, grain pile temperature and humidity cables, cabin temperature and humidity sensors, air temperature and humidity sensors and the like through a communication bus, and on-line detection, acquisition, storage and uploading of grain condition data such as grain temperature, grain pile temperature and humidity, cabin temperature and humidity, air temperature and humidity and the like are realized, so that real-time data support is provided for intelligent decision of temperature control software of the air conditioner 13. As shown in fig. 1 and 2, the outside-cabin air supply main pipe 1 and the outside-cabin return main pipe 11 are located on the part in the granary, and are respectively provided with a temperature and humidity sensor, wherein the position a is the mounting position of the air conditioner air supply temperature and humidity sensor, and the position B is the mounting position of the air conditioner return temperature and humidity sensor.

In addition, the measurement and control terminal integrates and automatically controls the real-time running states of the air conditioner, each electric valve and the acquisition equipment, and provides a control basis for the control automation of the temperature control operation flow control realized by the air conditioner temperature control software and the fault tolerance mechanism of the equipment protection mechanism.

Integrated air conditioner, automatic control air conditioner, communication air conditioner: the power supply/power failure of the air conditioner is controlled by a relay and an alternating current contactor; the network communication module of the measurement and control terminal is connected with the PLC board of the air conditioner through a network adapter, the communication instructs the air conditioner to start/stop, the communication sets the air conditioner return air target temperature and the start-stop temperature difference, the real-time running state of the air conditioner 13 is read, and the return air temperature and the supply air temperature are collected.

The power supply/outage of an opening circuit of the integrated control electric valve is performed to open the electric valve, and the power is cut off after the electric valve is opened in place, and whether the electric valve is opened in place is checked through an opening limit sensor; the measurement and control terminal closes the electric valve by integrally controlling the power supply/power failure of a closing circuit of the electric valve, and powers off after the electric valve is closed in place, and checks whether the electric valve is closed in place or not by a closing limit sensor. The power supply of the electric valve is connected with the power supply management module through two independent relays. The electric valve has the functions that: closing an electric valve when the grain pile is fumigated, and preventing corrosive toxic gas from entering the air conditioner 13 to corrode parts of the air conditioner 13; when the air conditioner 13 is stopped, the electric valve is closed to block the convection heat exchange between the hot air in the air conditioner 13 and the cold air on the surface layer of the grain stack, and the relative low temperature of the surface layer is maintained as much as possible.

Specifically to the open and closed state of the electric valve, it is possible to:

(1) Commanding the opening of the electrically operated valve may occur:

the electric valve is closed in place, the air flow loop is cut off, and the air conditioner 13 or the inner annular flow fan 7 of the area cannot be started; the failure degree of the electric valve is 'open failure', and the temperature control software and the main flow of the air conditioner 13 continuously give an alarm to a user at intervals of a certain time to promote maintenance; the air conditioner 13 continues to operate after the temperature control system and the waiting-for-open fault are solved.

The electric valve is not opened in place, the air flow loop is not completely unblocked but is not cut off, and the air conditioner 13 or the inner annular flow fan 7 in the area is started according to the principle that the surface grain temperature and the surrounding grain temperature are reduced at most; the failure degree of the electric valve is that the electric valve is not opened in place, and the temperature control software and the main flow of the air conditioner 13 give an alarm to a user once to prompt maintenance.

The electric valve is opened in place, the air flow loop is smooth, and the air conditioner 13 or the inner annular flow fan 7 in the area is started.

(2) When the temperature control system of the air conditioner 13 confirms that the closing of the electric valve does not damage the air conditioner 13 or the inner circulation fan 7, the electric valve can be instructed to be closed, so that a protection mechanism is formed. Commanding the closing of the electric valve may occur:

the electric valve is opened in place or closed in place, and the air flow loop is not blocked, so that: after the air conditioner 13 is stopped, heat exchange is carried out due to the microcirculation of high-temperature gas in the evaporator chamber of the air conditioner 13 and low-temperature gas in the bin, so that a grain pile cold source is consumed; the failure degree of the electric valve is 'off failure', and the temperature control software and the main flow of the air conditioner 13 give an alarm to a user once to prompt maintenance.

The valve is not "in place" and the flow circuit is interrupted.

(3) Opening the electric valve does not realize "opening in place" or closing the electric valve does not realize "closing in place", and the control flow repeatedly executes the instruction for 2 times, so that fault tolerance is further realized.

In the technical scheme of the application, the power supply of the air conditioner 13 special for the granary is connected with a relay through an alternating current contactor, and the relay is connected with a power supply management module.

The air conditioner temperature control system is arranged on the computer and comprises a C08 air conditioner starting control logic flow, a C17 air conditioner stopping control logic flow, a C01 circulation system air conditioner starting control logic flow, a C12 circulation system air conditioner stopping control logic flow, a C09 inner circulation fan starting logic control sub-flow, a C11 inner circulation fan stopping logic control sub-flow air flow loop switching control flow, a D06 electric valve opening flow and a D08 electric valve closing flow. By embedding a control flow in the air conditioner temperature control system, the running states of the electric valve, the circulating fan, the air conditioner and other equipment are monitored and judged, fault tolerance is carried out on faults of the electric valve, and the system running is ensured to the greatest extent. Meanwhile, in the processes of system operation, equipment opening, equipment closing, airflow loop switching and the like, equipment such as a circulating fan, an air conditioner and the like is protected through system control, so that facilities are prevented from being damaged.

And C08 air conditioner starting control logic flow:

c08-01 opens the corresponding return air electric valve and air supply electric valve of air conditioner 13;

c08-02 obtains the real-time state of the return air electric valve through opening a limit sensor and a Guan Xianwei sensor;

C08-03 judges whether the return air electric valve is closed in place, if the return air electric valve is in the closed state, the C08-04 records faults, and if the return air electric valve is not closed in place, the C08-07 is further executed

C08-05 closing the return air electric valve and the air supply electric valve;

c08-06, carrying out fault alarm and returning to the main flow;

c08-07 judges whether the return air electric valve is in a state of being opened in place, if not, C08-08 records that the return air electric valve is not opened in place, and further executes C08-09 fault alarm; if the operation is in place, executing C08-10;

c08-10, acquiring the real-time state of the air supply electric valve;

c08-11 judges whether the air supply electric valve is in a closed state, if so, C08-12 is executed to record faults, C08-05 is further executed to close the return air electric valve and the air supply electric valve, and C08-06 carries out fault alarm; if not, C08-13 is executed;

c08-13 judges whether the air supply electric valve is in an open position state, if so, C08-14 is executed to supply power to the air conditioner; if the air supply electric valve is not in place, executing C08-19 to record that the air supply electric valve is not in place, executing C08-20 to alarm the fault, and further executing C08-14;

c08-15, acquiring the power supply state of the air conditioner;

c08-16 judges whether the air conditioner is successful in power supply, if so, the main flow C09 is returned; c08-17 is executed if the power supply fails;

C08-17 power-off air conditioner;

c08-18 records the power supply failure of the air conditioner, and returns to the main flow C02 after further executing C08-05 and C08-06.

Further, the logic flow of the shutdown control of the C17 air conditioner is as follows:

c17-01, powering off the air conditioner;

c17-02, confirming that the air conditioner is in a stop state;

c17-03, closing a return air electric valve and an air supply electric valve corresponding to the air conditioner;

c17-04 acquires a real-time power supply state of the return air electric valve;

c17-05 judges whether the return air electric valve is closed in place, if the return air electric valve is closed in place, C17-08 is executed, if the return air electric valve is not closed in place, C17-06 is executed to record faults, and C17-07 is further executed to alarm faults;

c17-08 obtains the real-time state of the air supply electric valve;

c17-09 judges whether the air supply electric valve is closed in place, if the air supply electric valve is closed in place, the main flow returns to the main flow C18 directly, if the air supply electric valve is not closed in place, the C17-10 recording fault is executed, the C17-11 fault alarm is further carried out, and the main flow C18 returns.

Example 3

The logic flow of the starting control of the C01 circulation system air conditioner is as follows:

c01-01 judges whether the air conditioner has faults according to the fault maintenance/protection records, if the air conditioner has faults, C01-03 linkage alarm is executed, and the air conditioner returns to the original operating point B06 of the main flow; c01-02 is executed if no fault exists;

C01-02 judges whether the first electric valve is opened or not to have faults according to the fault maintenance/protection record, if so, C01-03 linkage alarm is executed, and the operation returns to the original operation point B06 of the main flow; executing C01-04 if no fault exists;

c01-04 opening a first electric valve 4 corresponding to the air conditioner 13;

c01-05, detecting the real-time state of the first electric valve 4;

c01-06 judges that the first electric valve 4 is in a closed state, and if the first electric valve is not in the closed state, C01-10 is executed; if the valve is in place, C01-07 is executed to record the open fault of the first electric valve 4, then C01-08 is executed to close the first electric valve 4, C01-09 fault alarm is executed, and the process returns to the original process B06;

c01-10 judging that the first electric valve 4 is in place, if the first electric valve is not in place, executing C01-11; if the state is in the on-state, executing C01-13;

c01-11 records that the first electric valve 4 is not opened in place;

c01-12, performing fault alarm;

c01-13 supplying power to the air conditioner 13;

c01-14, detecting the power supply state of the air conditioner;

c01-15 judges whether the power supply is successful or not, if the power supply fails, the C01-16 power-off air conditioner 13 is executed, the power supply fault of the air conditioner 13 is recorded, the C01-08 is further executed to close the first electric valve 4, the C01-09 fault alarm is given, and the original process B06 is returned; if the power supply is successful, executing C01-18;

c01-18 record airflow circuit a state: unblocked

C01-19 is retrieved and recorded, and the main flow C02 is returned.

Example 4

The shutdown control logic flow of the C12 loop system air conditioner 13 is as follows:

c12-01, powering off the air conditioner;

c12-02 confirmation of air conditioner 13 shutdown

C12-03 closing the first electric valve 4 corresponding to the air conditioner 13;

c12-04 detects the real-time state of the first electric valve 4;

c12-05 judges that the first electric valve 4 is in a closed state, and if the first electric valve is in an out-of-position state, C12-06 is executed; if the position is closed, C12-08 is executed;

c12-06 records the closing fault of the first electric valve 4;

c12-07 fault alarm;

c12-08, acquiring and recording the running state;

returning to the original operating point of the main flow.

Example 5

The starting logic control sub-flow of the C09 inner loop flow fan is as follows:

c09-01 judges whether the second electric valve 6 has a fault according to the fault maintenance/protection record, if so, C09-03 linkage alarm is executed, and the operation point is returned to the original operation point of the main flow; if no, execute C09-02;

c09-02 judges whether the inner ring flow fan 7 has faults according to the fault maintenance/protection records, if so, C09-03 linkage alarm is executed, and the operation point of the main flow fan is returned to the original operation point; if no fault exists, executing the step C09-04;

c09-04 opens the second electrically operated valve 6 in this region;

c09-05, detecting the real-time state of the second electric valve 6;

c09-06 judges whether the second electric valve is closed in place, if so, C09-07 is executed to record the open fault of the second electric valve 6, C09-08 is further executed to close the second electric valve 6, C09-09 linkage alarm is executed, and the main flow original operating point is returned; if the state is in the on-position state, executing C09-10;

C09-10 is used for supplying power to the inner annular flow fan 7 in the area;

c09-11, detecting the real-time state of the inner annular flow fan 7;

c09-12 judges that the working voltage of the fan is more than 0, if the working voltage of the fan is equal to 0, C09-13 records the power failure of the fan, C09-16 is further executed to cut off the power supply of the fan, the second electric valve 6 is further closed, the linkage alarm is carried out, and the original operating point of the main flow is returned; if the working voltage of the fan is greater than 0, executing C09-14;

c09-14 judges whether the working current of the fan is consistent with the rated current, C09-16 is executed to obtain and record the running state of the air conditioner, the return air temperature of the air conditioner, the supply air temperature of the air conditioner, the return air target temperature and the running state of the fan, and finally the primary running point of the main flow is returned; if the current does not accord with the rated current, C09-15 is executed;

c09-15, recording fan power supply faults;

and C09-16, cutting off the power supply of the fan, further executing C09-08 to close the second electric valve 6, carrying out C09-09 linkage alarm, and returning to the original operating point of the main flow.

Example 6

The shutdown logic control sub-flow of the C11 inner loop flow fan is as follows:

c11-00 power-off fan;

c11-01, confirming that the working voltage of the fan is equal to 0;

c11-02 closing the second electrically operated valve 6;

c11-03, detecting the real-time state of the second electric valve 6;

c11-04 judges whether the second electric valve is closed in place, if not, C11-05 is executed; if the switch is in place, C11-07 is executed;

C11-05 records the closing fault of the second electric valve 6;

c11-06 fault alarm

And C11-07 records the running state of the air conditioner, the return air temperature of the air conditioner, the supply air temperature of the air conditioner, the return air target temperature and the running state of the fan, and returns to the original running point of the main flow.

Example 7

The airflow loop switching control flow is as follows:

when the DT2 satisfies t=n×t2, executing D01, and returning to the main flow if the DT2 does not satisfy t=n×t2;

d01 obtaining the operation data of the air conditioner 13

D02, judging whether the air conditioner operates normally or not; when the air conditioner is in a standby state, entering a D03 air conditioner to be controlled; b03 is carried out when the air conditioner operates normally;

b03, judging whether the air conditioner operation environment is in a relatively high-temperature environment or a relatively low-temperature environment;

in a relatively high temperature environment:

b11, judging whether the condition 1 for reducing the bin temperature is met; satisfying execution D04, failing to satisfy execution C02 and D07, returning to the main flow;

d04, judging the state of the inner circulating fan 7, and executing C11 when the inner circulating fan is in a starting state; executing C12 in a stop state, further executing C14 to record a task pause, and further executing management and control after stopping;

setting system parameters, further executing D07 record data, and returning to the main flow;

in a relatively low temperature environment:

d05 judging whether the airflow loop a is smooth, if so, executing the step B10, and if so, executing the step B08;

B10, judging whether the bin temperature reduction starting condition 2 is met, and calling C02 if the bin temperature reduction starting condition is not met; if yes, executing D06, and calling C02;

b08 judges whether to meet the condition 2 of suspending the temperature reduction of the cabin, if yes, execute D04, if not, execute C02;

d04, judging the state of the inner circulating fan 7, if the inner circulating fan is stopped, executing C12, and if the inner circulating fan is in a starting state, executing B09;

b09 judges whether the circulation pause condition in four weeks is satisfied, D08 is not satisfied, and C02 is further invoked; if so, C12 is performed.

The condition 1 for reducing the bin temperature, the condition 2 for reducing the bin temperature and the circulating current suspension condition in the periphery are preset values in the system.

Example 8

The opening flow of the D06 electric valve is as follows:

d06-01 opening the first electrically operated valve 4;

d06-02 detects the real-time state of the first electric valve 4;

d06-03 judges whether the first electric valve is closed or not; executing the D06-04 when the position is closed, and executing the D06-06 when the position is not closed;

d06-04 records the open fault of the first electric valve 4;

d06-05 fault alarm, and then returning to the original operating point of the main flow;

d06-06 judges whether the first electric valve is opened in place; executing D06-07 without opening in place, and opening to execute D06-09;

d06-07 records that the first electric valve 4 is not opened in place;

d06-08 fault alarm;

d06-09, recording that the airflow loop a is opened, and returning to the original operating point of the main flow;

If the first electrically operated valve 4 is in the in-place state, the air flow circuit a is opened and returns to the original operating point of the main flow.

Example 9

The closing flow of the D08 electric valve is as follows:

d08-01 closing the first electrically operated valve 4;

d08-02 detects the real-time state of the first electric valve 4;

d08-03 judges whether the first electric valve 4 is closed in place, if so, D08-04 is executed, and if not, D06-06 is executed;

d08-04 records the first electrically operated valve 4 off failure;

d08-05 fault alarm;

and D08-06, closing the air flow loop a, and returning to the original operating point of the main flow.

It will be understood that the invention has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. The intelligent grain temperature regulating and controlling method of the air conditioner with the protection mechanism and the fault tolerance mechanism is characterized by comprising the following steps:

Step 1: dividing the granary into a plurality of independent temperature control areas according to the arrangement position of air conditioners, wherein the air conditioners are arranged outside the granary and are connected with a circulation pipe network in the granary through an outside air supply main pipe and an outside air return main pipe, an electric valve is arranged on an air flow loop of the circulation pipe network to automatically open or cut off the air flow loop according to the temperature control requirement, and an air supply electric valve and an air return electric valve are respectively arranged on the outside air supply main pipe and the outside air return main pipe;

step 2: establishing a one-to-one correspondence between the air-conditioner temperature control system and each temperature control area and between the air-conditioner temperature control system and equipment in the temperature control area; each area in the granary is independently controlled in a time sharing manner, so that fault tolerance of equipment is realized, and the equipment fault in one area is ensured not to influence the operation of temperature control equipment in other areas in the same granary;

step 3: the open and close states of the electric valve are monitored, the air conditioner temperature control system judges the 'smooth or cut-off' state of the airflow loop of the circulation pipe network according to the real-time state of the electric valve, judges the fault degree of the electric valve, and starts related equipment on the air conditioner and the circulation pipe network to the greatest extent so as to realize fault tolerance of the electric valve;

step 4: executing an air conditioner start control logic flow, starting an air conditioner, ensuring the smoothness of a circulation pipe network air path, and cooling the surface of the grain pile; meanwhile, the temperature of the surface of the grain pile is used as a temperature control condition, so that the equipment cannot operate due to abnormal temperature and humidity of the grain pile;

Step 5: changing the open-close state of part of equipment in the circulation pipe network, and adjusting the flow direction of the air channel to cool the periphery of the grain pile;

step 6: and after the set temperature is reached, executing an air conditioner shutdown control logic flow to shut down the air conditioner for energy saving.

2. The intelligent grain temperature regulating and controlling method with the protection mechanism and the fault tolerance mechanism for the air conditioner is characterized in that a circulation pipe network in the grain bin in the step 1 comprises an airflow loop a for controlling the temperature of the bin and the surface grain temperature of a grain pile and an airflow loop b for controlling the temperature of the grain around the grain pile, and an electric valve arranged on the circulation pipe network comprises an electric valve 1 and an electric valve 2;

the air flow loop a comprises an air conditioner, an external air supply main pipe, an external air return main pipe and universal nozzles, and the external air supply main pipe penetrates through a cabin wall and is connected with an air supply branch pipe; the outside-cabin return air main pipe penetrates through the cabin wall and is connected with an air conditioner return air inlet arranged in the cabin; the electric valve 1 is arranged on an air supply branch pipe, and a plurality of universal nozzles are arranged on the air supply branch pipe;

the air flow loop a is circulated along the path of an air conditioner, an out-bin air supply main pipe, an air supply branch pipe, a universal nozzle, a bin room, an air conditioner return air inlet, a return air main pipe and an air conditioner;

the airflow loop b comprises an out-bin air supply main pipe, an out-bin air return main pipe and an air supply vertical pipe; the main air supply pipe outside the cabin penetrates through the cabin wall and is connected with the air supply vertical pipe; an electric valve 2 and an inner annular fan are arranged on the air supply vertical pipe, one end of the air supply vertical pipe is connected with an outlet in a cabin of an air supply main pipe outside the cabin, and the other end of the air supply vertical pipe is connected with a horizontal air distribution branch pipe;

The air flow loop b is circulated along the path of air conditioning, main air supply pipe, vertical air supply pipe, horizontal air distribution branch pipe, cabin space, air conditioning return air inlet, main return air pipe and air conditioning;

the electric valve 1, the electric valve 2, the air supply electric valve and the return air electric valve are respectively provided with an opening limit sensor and a Guan Xianwei sensor;

the air conditioner, the inner annular flow fan, the electric valve 1, the electric valve 2, the opening limit sensor and the Guan Xianwei sensor are respectively connected with the measurement and control terminal and are integrally controlled by the measurement and control terminal.

3. The intelligent grain temperature regulating and controlling method for the air conditioner with the protection mechanism and the fault tolerance mechanism according to claim 2, wherein the opening and closing states of the electric valve in the step 3 are judged when the electric valve is opened and closed;

the opening flow of the electric valve 1 is as follows:

opening the electric valve 1, and detecting the real-time state of the electric valve 1;

if the electric valve 1 is in the closed state, recording the open fault of the electric valve 1, alarming the fault, and returning to the original operating point of the main flow;

if the electric valve 1 is in the state of not closing in place, judging whether the electric valve 1 is in place or not;

if the electric valve 1 is in a state of not being opened in place, recording that the electric valve 1 is not opened in place, giving a fault alarm, and opening an airflow loop a;

If the electric valve 1 is in an in-place state, the airflow loop a is opened, and the original operating point of the main flow is returned;

the closing flow of the electric valve 1 is as follows:

closing the electric valve 1, and detecting the real-time state of the electric valve 1;

if the electric valve 1 is in an unopened state, recording the closing fault of the electric valve 1, giving an alarm on the fault, and closing the air flow loop a;

if the electric valve 1 is in the closed state, the air flow circuit a is closed, and the original operating point of the main flow is returned.

4. The intelligent grain temperature regulating and controlling method of air conditioner with protection mechanism and fault tolerance mechanism according to claim 3, wherein the logic flow of the air conditioner starting control in the step 4 is as follows:

opening a return air electric valve and an air supply electric valve corresponding to the air conditioner;

acquiring the real-time state of the return air electric valve through a limit sensor and a Guan Xianwei sensor;

if the return air electric valve is in a closed state, recording faults, closing the return air electric valve and the air supply electric valve, and giving fault alarm;

if the return air electric valve is in the state of not closing in place, further judging whether the return air electric valve is in the state of opening in place;

if the return air electric valve is in a state of being opened in place, acquiring the real-time state of the air supply electric valve;

if the return air electric valve is in a state of not being opened in place, recording faults, carrying out fault alarm, and further obtaining the real-time state of the air supply electric valve;

Further judging whether the air supply electric valve is in a closed state, if so, recording faults, closing the return air electric valve and the air supply electric valve, and carrying out fault alarm;

if the air supply electric valve is not closed in place, judging whether the air supply electric valve is in an open in-place state, and if the air supply electric valve is open in place, supplying power to the air conditioner to acquire an air conditioner power supply state;

if the air supply electric valve is not closed in place and is not opened in place, recording faults, giving a fault alarm, and further supplying power to the air conditioner to obtain the power supply state of the air conditioner;

and finally, judging whether the power supply of the air conditioner is successful, if not, powering off the air conditioner, recording faults, closing the return air electric valve and the air supply electric valve, and carrying out fault alarm.

5. The intelligent grain temperature regulating and controlling method of air conditioner with protection mechanism and fault tolerant mechanism according to claim 4, wherein the air conditioner mediating control logic flow in step 6 is as follows:

powering off the air conditioner, and confirming that the air conditioner is in a stop state;

closing the return air electric valve and the air supply electric valve to obtain the power supply state of the air conditioner;

judging the closing state of the return air electric valve, if the return air electric valve is not closed in place, recording faults, carrying out fault alarm, and further obtaining the real-time state of the air supply electric valve;

If the return air electric valve is closed in place, acquiring the real-time state of the air supply electric valve;

judging the closing state of the air supply electric valve, if the air supply electric valve is not closed in place, recording a fault, carrying out fault alarm, and returning to the main flow;

if the air supply electric valve is closed in place, the main flow is directly returned.

6. The intelligent grain temperature regulating and controlling method with protection mechanism and fault tolerance mechanism for air conditioner of claim 5, wherein when the air flow loop a needs to be opened, the peripheral grain temperature system air conditioner starting control is executed, and the specific method is as follows:

judging whether the air conditioner has faults according to the fault maintenance/protection records, if so, carrying out linkage alarm, and returning to the original operating point of the main flow;

if no fault exists, further judging whether the opening of the electric valve 1 has the fault or not according to the fault maintenance/protection record, and if the opening has the fault, carrying out linkage alarm and returning to the original operating point of the main flow;

if no fault exists, opening an electric valve 1 corresponding to the air conditioner;

detecting the real-time state of the electric valve 1, if the electric valve 1 is closed in place, recording the open fault of the electric valve 1, closing the electric valve 1, alarming the fault, and returning to the original operating point of the main flow;

if the state of the electric valve 1 is not closed in place, further detecting that the electric valve 1 is opened in place, if the state of the electric valve 1 is not opened in place, recording that the electric valve 1 is not opened in place, carrying out fault alarm, and supplying power to an air conditioner;

If the electric valve 1 is in the on-position state, the air conditioner is directly powered;

further detecting the power supply state of the air conditioner, if the power supply fails, powering off the air conditioner, recording the power supply failure of the air conditioner, closing the electric valve 1, alarming the failure, and returning to the original operating point of the main flow;

if the power supply is successful, the state of the airflow loop a is recorded: and (3) unblocking.

7. The intelligent grain temperature regulating and controlling method with protection mechanism and fault tolerance mechanism according to claim 6, wherein when the air flow loop a needs to be closed, the air conditioning closing control of the peripheral grain temperature system is executed, and the specific method is as follows:

powering off the air conditioner, confirming that the air conditioner is stopped, and closing an electric valve 1 corresponding to the air conditioner;

detecting the real-time state of the electric valve 1, if the electric valve 1 is not in place, recording the closing fault of the electric valve 1, alarming the fault, and returning to the original operating point of the main flow;

if the electric valve 1 is in the closed state, the air conditioner is stopped.

8. The intelligent grain temperature regulating and controlling method with protection mechanism and fault tolerance mechanism according to claim 7, wherein in the step 5, the specific control flow is as follows when the switching is required:

when the T=Nt 2 is met, acquiring air conditioner operation data, and when the air conditioner is in a standby state, entering standby management and control;

When the air conditioner is in a normal running state, the running environment is analyzed, and whether the condition of reducing the cabin temperature is met or not is judged in a relatively high-temperature environment;

if yes, judging the state of the internal circulating fan, and executing a C11 shutdown process when the internal circulating fan is in a starting state; if the inner circulating fan is in a stop state, calling C12 to execute air conditioner stop;

if the condition of reducing the bin temperature is not met, calling C02;

when the air conditioner is in a relatively low-temperature environment, judging whether the air flow loop a is smooth, if so, judging whether a bin temperature reduction starting condition 2 is met, and if not, calling C02; if yes, opening an electric valve, and calling C02;

judging whether a cabin temperature reduction pause condition 2 is met when the airflow loop a is unblocked, if so, further looking at the state of the inner circulation fan, if so, closing the air conditioner, if so, further judging whether the surrounding inner circulation pause condition is met, if not, closing the electric valve, and then calling C02; if the management inner loop flow fan is satisfied;

if the reduced bin temperature pause condition 2 is not satisfied, C02 is invoked.

9. The intelligent grain temperature regulating and controlling method with protection mechanism and fault tolerance mechanism for air conditioner of claim 7, wherein the logic control sub-flow of the inner circulation fan is as follows:

Judging whether the electric valve 2 has a fault according to the fault maintenance/protection record, if so, carrying out linkage alarm, and returning to the original operating point of the main flow;

if no fault exists, judging whether the inner ring flow fan has the fault according to the fault maintenance/protection record, if yes, carrying out linkage alarm, and returning to the original operating point of the main flow;

if no fault exists, opening the electric valve 2 in the area, and detecting the real-time state of the electric valve 2;

if the electric valve 2 is in a closed state, recording the open fault of the electric valve 2, further closing the electric valve 2, carrying out linkage alarm, and returning to the original operating point of the main flow;

if the electric valve 2 is in a state of being opened in place, the inner annular flow fan in the area is powered, and the real-time state of the inner annular flow fan is detected;

if the working voltage of the fan is equal to 0, recording a fan power supply fault, disconnecting the fan power supply, further closing the electric valve 2, carrying out linkage alarm, and returning to the original operating point of the main flow;

if the working voltage of the fan is greater than 0, further judging whether the working current of the fan is consistent with the rated current;

if the rated current does not accord with the rated current, recording a fan power supply fault, disconnecting the fan power supply, further closing the electric valve 2, carrying out linkage alarm, and returning to the original operating point of the main flow;

if the rated current is consistent with the rated current, the running state of the air conditioner, the return air temperature of the air conditioner, the supply air temperature of the air conditioner, the return air target temperature and the running state of the fan are recorded, and finally the original running point of the main flow is returned.

10. The intelligent grain temperature regulating and controlling method of air conditioner with protection mechanism and fault tolerance mechanism as set forth in claim 7, wherein the logic control sub-flow of the shutdown of the inner circulation fan is as follows:

after the fan is powered off and the working voltage of the fan is confirmed to be equal to 0, the electric valve 2 is closed;

detecting the real-time state of the electric valve 2, if the electric valve 2 is in the non-closed state, recording the closing fault of the electric valve 2, alarming the fault, recording the running state of the air conditioner, the return air temperature of the air conditioner, the supply air temperature of the air conditioner, the return air target temperature and the running state of the fan, and returning to the original running point of the main flow;

if the electric valve 2 is in the closed state, the running state of the air conditioner, the return air temperature of the air conditioner, the supply air temperature of the air conditioner, the return air target temperature and the running state of the fan are directly recorded, and the original running point of the main flow is returned.