CN108981077B - Abnormal fault tolerance control method and device and air conditioner - Google Patents
Abnormal fault tolerance control method and device and air conditioner Download PDFInfo
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- CN108981077B CN108981077B CN201810779734.2A CN201810779734A CN108981077B CN 108981077 B CN108981077 B CN 108981077B CN 201810779734 A CN201810779734 A CN 201810779734A CN 108981077 B CN108981077 B CN 108981077B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/38—Failure diagnosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
Abstract
The invention discloses an abnormal fault tolerance control method, an abnormal fault tolerance control device and an air conditioner. The control method is applied to the air conditioner and comprises the following steps: detecting whether a sampling operational amplifier circuit of a driving controller of the air conditioner is abnormal or not; if so, starting a fault mode to enable the load corresponding to the driving controller to work normally when the sampling operational amplifier circuit is abnormal; the fault mode is used for indicating to activate an open-loop control program, and the open-loop control program can indicate the load to operate in a preset state. According to the invention, when the sampling operational amplifier circuit is abnormal, the fault mode can be started, namely, the open-loop control program is started, so that the load can still run in a preset state without stopping working. Therefore, the abnormal fault tolerance and the anti-interference performance of the air conditioner are improved, the adaptive capacity of the air conditioner is improved, and the use experience and the comfort level of a user are improved to a certain extent.
Description
Technical Field
The invention relates to the technical field of units, in particular to an abnormal fault tolerance control method, an abnormal fault tolerance control device and an air conditioner.
Background
In the field of units, a current operational amplifier sampling circuit is an important component of a driving controller. The phase current information flowing through the precise sampling resistor can be acquired through the current operational amplifier sampling circuit, and the position information of the motor rotor, the speed information of the motor rotor, the torque information of the motor rotor and the like can be obtained through a relevant calculation formula of a motor operation model. If the current operational amplifier sampling circuit is damaged, the above information cannot be calculated. In the related art, taking an air conditioning unit and a fan driving controller as examples, when an abnormal condition occurs in a current operational amplifier sampling circuit, the fan is usually stopped, a main controller prompts a fan fault to a user, and a maintenance person is waited to replace the driving controller to solve the abnormal condition. However, the fan can be immediately stopped in the mode, the air conditioner can normally work after the fan needs to be maintained, the abnormal fault tolerance and the anti-interference performance of the air conditioner are reduced, and the use experience and the comfort of a user can be influenced under certain conditions. In some special cases, the air conditioner needs to be kept in a starting state to ensure a certain ambient temperature. If the air conditioner is stopped due to failure at the moment, the use of a user is influenced and even certain economic loss is caused.
Aiming at the problem that when the current operational amplifier sampling circuit is abnormal in the related art, the corresponding load directly stops working, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides an abnormal fault tolerance control method, a control device and an air conditioner, and aims to solve the problem that when a current operational amplifier sampling circuit is abnormal, the corresponding load directly stops working in the prior art.
In order to solve the above technical problem, in a first aspect, the present invention provides an abnormal fault tolerance control method, where the method is applied to an air conditioner, and the method includes:
detecting whether a sampling operational amplifier circuit of a driving controller of the air conditioner is abnormal or not;
if so, starting a fault mode to enable the load corresponding to the driving controller to work normally when the sampling operational amplifier circuit is abnormal;
wherein the fault mode is used to indicate activation of an open loop control routine capable of indicating operation of the load in a preset state.
Further, the initiating the failure mode further comprises:
and controlling the driving controller to shield the current value detected by the sampling operational amplifier circuit.
Further, the method further comprises: if the sampling operational amplifier circuit is not abnormal, starting a normal mode; wherein the normal mode is to instruct the drive controller to skip an open loop control procedure.
Further, after activating the open-loop control procedure or skipping the open-loop control procedure, the method further comprises: decoding the remote control information through an infrared remote control receiver positioned at the side of the main controller to determine an operation mode; controlling the main controller to send a first signal to the electronic expansion valve according to the running mode; sending a second signal to the driving controller to enable the electronic expansion valve to adjust the opening degree of the electronic expansion valve according to the first signal; and enabling the driving controller to drive the corresponding load to work through a driving circuit according to the second signal; wherein the operation mode is a cooling mode or a heating mode.
Further, after controlling the main controller to send a second signal to the driving controller, so that the driving controller drives the corresponding load to work through the driving circuit according to the second signal, the method further includes: and re-detecting whether the sampling operational amplifier circuit is abnormal or not at preset time intervals.
Further, when the air conditioner is in a failure mode, the method further includes: sending prompt information to a user, wherein the prompt information is used for prompting the user that the sampling operational amplifier circuit is abnormal and prompting the type of the abnormality; and judging whether the current environment temperature value is within a preset range, if so, prompting a user to replace the driving controller or the main controller after the air conditioner is powered off.
Further, before detecting whether a sampling operational amplifier circuit of a driving controller of the air conditioner is abnormal, the method further includes: data associated with the open loop control program is stored.
Further, before detecting whether a sampling operational amplifier circuit of a driving controller of the air conditioner is abnormal, the method further includes: and controlling the air conditioner to be powered on and executing an initialization process.
Further, when the load is a fan and the drive controller is a fan drive controller, the method comprises:
detecting whether a sampling operational amplifier circuit of a fan driving controller of the air conditioner is abnormal or not;
if so, starting a fault mode, and controlling the fan driving controller to shield the current value detected by the sampling operational amplifier circuit so that the fan can normally work when the sampling operational amplifier circuit is abnormal;
the fault mode is used for indicating to activate an open-loop control program, and the open-loop control program can indicate the fan to run at a preset frequency.
In a second aspect, an embodiment of the present invention further provides an air conditioner, where the air conditioner is configured to perform the method of the first aspect, the air conditioner includes a driving controller,
the air conditioner is used for detecting whether a sampling operational amplifier circuit of a driving controller of the air conditioner is abnormal or not; if yes, starting a fault mode;
and the driving controller is used for activating an open-loop control program in the fault mode so that the load corresponding to the driving controller operates in a preset state when the sampling operational amplifier circuit is abnormal.
Further, the air conditioner is further configured to control the driving controller to shield the current value detected by the sampling operational amplifier circuit in the fault mode.
Further, the air conditioner is also used for starting a normal mode if the sampling operational amplifier circuit is not abnormal; wherein the normal mode is to instruct the drive controller to skip an open loop control procedure.
Further, the air conditioner further includes: the infrared remote control receiver is connected with the main controller; the infrared remote control receiver is used for decoding remote control information after an open-loop control program is activated or skipped so as to determine an operation mode; the main controller is used for sending a first signal to the electronic expansion valve according to the running mode and sending a second signal to the driving controller; the electronic expansion valve is used for adjusting the opening degree of the electronic expansion valve according to the first signal; the driving controller is used for receiving the second signal through the communication circuit and further driving the corresponding load to work through the driving circuit; wherein the operation mode is a cooling mode or a heating mode.
Further, the air conditioner further includes: the fault signal lamp is connected with the driving controller and used for sending prompt information to a user, and the prompt information is used for prompting the user that the sampling operational amplifier circuit is abnormal and prompting the type of the abnormality; the fault signal lamp is also used for prompting a user to replace the driving controller or the main controller after the air conditioner is powered off when the current ambient temperature value is within a preset range.
Further, the air conditioner further includes: a memory to store data related to the open loop control program.
Further, the air conditioner is also used for executing an initialization process after being powered on.
Further, when the load is a fan and the drive controller is a fan drive controller, the air conditioner is also used for detecting whether a sampling operational amplifier circuit of the fan drive controller of the air conditioner is abnormal; if so, starting a fault mode and controlling the fan driving controller to shield the current value detected by the sampling operational amplifier circuit; and the drive controller is used for activating an open-loop control program in the fault mode so that the fan runs at a preset frequency when the sampling operational amplifier circuit is abnormal.
In a third aspect, an embodiment of the present invention further provides an abnormal fault tolerant control apparatus, where the apparatus is configured to execute the method in the first aspect, and the apparatus includes:
the detection module is used for detecting whether a sampling operational amplifier circuit of a driving controller of the air conditioner is abnormal or not;
the starting module is used for starting a fault mode when the sampling operational amplifier circuit is abnormal so that a load corresponding to the driving controller can normally work when the sampling operational amplifier circuit is abnormal; wherein the fault mode is used to indicate activation of an open loop control routine capable of indicating operation of the load in a preset state.
Further, the starting module is further configured to control the driving controller to shield the current value detected by the sampling op-amp circuit in the fault mode.
Further, the starting module is further configured to start a normal mode if the sampling operational amplifier circuit is not abnormal; wherein the normal mode is used to indicate skipping of an open loop control procedure.
Further, the apparatus further comprises: the decoding module is used for decoding the remote control information through an infrared remote control receiver positioned at the side of the main controller after the open-loop control program is activated or skipped so as to determine the running mode; the adjusting module is used for controlling the main controller to send a first signal to the electronic expansion valve according to the running mode; sending a second signal to the driving controller to enable the electronic expansion valve to adjust the opening degree of the electronic expansion valve according to the first signal; and enabling the driving controller to drive the corresponding load to work through a driving circuit according to the second signal; wherein the operation mode is a cooling mode or a heating mode.
Further, the detection module is further configured to control the main controller to send a second signal to the driving controller, so that the driving controller drives the corresponding load to work through the driving circuit according to the second signal, and then re-detect whether the sampling operational amplifier circuit is abnormal every preset time.
Further, the apparatus further comprises: the prompting module is used for sending prompting information to a user when the air conditioner is in a fault mode, wherein the prompting information is used for prompting the user that the sampling operational amplifier circuit is abnormal and prompting the type of the abnormality; and judging whether the current environment temperature value is within a preset range, if so, prompting a user to replace the driving controller or the main controller after the air conditioner is powered off.
By applying the technical scheme of the invention, whether a sampling operational amplifier circuit of a driving controller of the air conditioner is abnormal is detected; if yes, starting a fault mode to enable the corresponding load to work normally when the sampling operational amplifier circuit is abnormal; wherein the fault mode is used to indicate activation of an open loop control program capable of indicating operation of the load in a preset state. Therefore, when the sampling operational amplifier circuit is abnormal, the fault mode can be started, namely, the open-loop control program is started, so that the load can still run in a preset state without stopping running. Therefore, the abnormal fault tolerance and the anti-interference performance of the air conditioner are improved, the adaptive capacity of the air conditioner is improved, and the use experience and the comfort level of a user are improved to a certain extent. The problem that the air conditioner needs to be started to maintain a certain temperature but causes loss to users due to fault shutdown under certain special conditions is solved.
Drawings
FIG. 1 is a flow chart of a method of controlling fault tolerance according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method of controlling fault tolerance according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method of controlling fault tolerance according to an embodiment of the present invention;
FIG. 4 is a logic diagram of an abnormal fault-tolerant control method applied to an air conditioner according to an embodiment of the present invention;
fig. 5 is a block diagram of an air conditioner according to an embodiment of the present invention;
fig. 6 is a schematic structural view of an air conditioner according to an embodiment of the present invention;
fig. 7 is a block diagram of an abnormal fault-tolerant control apparatus according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments, it being understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
For clarity of description of the present invention, a brief description of the fan drive controller and its surrounding structure will now be provided. In practical applications, the peripheral interfaces of the fan drive controller generally include: the motor wiring terminal, the main controller and the communication terminal of the fan driving controller and the power input terminal. The internal modules or internal circuits of a fan drive controller generally include: the Power supply comprises a voltage-stabilized Power supply Module, a Power inversion IPM (Intelligent Power Module), a current operational amplifier sampling circuit and a program Processing center DSP (Digital Signal Processing). When the current operational amplifier sampling circuit of the fan driving controller is abnormal, the normal processing mode is to stop the fan from running, and the main controller notifies a client that a fault occurs and waits for a maintenance worker to process the fault. And as described in the background art, the position information of the motor rotor, the speed information of the motor rotor, the torque information of the motor rotor and the like can be calculated through the current value detected by the operational amplifier sampling circuit, and the operating frequency of the fan can be adjusted according to the information, so that a feedback system is formed. When the operational amplifier sampling circuit is damaged, the position, speed and other parameters of the rotor cannot be calculated, the operating frequency of the fan cannot be adjusted, the feedback system fails, and the fan stops operating.
The problem of when current operational amplifier sampling circuit takes place unusually among the prior art, directly lead to load stop work is solved in order to solve. The embodiment of the invention provides a control method for abnormal fault tolerance, which is applied to an air conditioner and comprises the following steps as shown in figure 1:
s101, detecting whether a sampling operational amplifier circuit of a driving controller of the air conditioner is abnormal or not;
and step S102, if so, starting a fault mode to enable the load corresponding to the driving controller to work normally when the sampling operational amplifier circuit is abnormal.
The fault mode is used for indicating to activate an open-loop control program, and the open-loop control program can indicate the load to operate in a preset state.
Therefore, whether a sampling operational amplifier circuit of a driving controller of the air conditioner is abnormal or not is detected; if yes, starting a fault mode to enable the corresponding load to work normally when the sampling operational amplifier circuit is abnormal; wherein the fault mode is used to indicate activation of an open loop control program capable of indicating operation of the load in a preset state. Therefore, when the sampling operational amplifier circuit is abnormal, the fault mode can be started, namely, the open-loop control program is started, so that the load can still run in a preset state without stopping running. Therefore, the abnormal fault tolerance and the anti-interference performance of the air conditioner are improved, the adaptive capacity of the air conditioner is improved, and the use experience and the comfort level of a user are improved to a certain extent. The problem that the air conditioner needs to be started to maintain a certain temperature but causes loss to users due to fault shutdown under certain special conditions is solved.
In one possible implementation manner, as shown in fig. 2, the step S102 of initiating the failure mode further includes: and controlling the driving controller to shield the current value detected by the sampling operational amplifier circuit.
When the bias voltage 1.65VDC output is inaccurate, the operational amplifier fails or the resistance value deviation of the sampling resistor is large, the sampling operational amplifier circuit is prone to be abnormal. The MCU (MicroControl Unit) can receive the abnormal feedback signal in real time, start a fault mode (the fault mode can be set for the air conditioner when leaving a factory), and shield the current value detected by the sampling operational amplifier circuit when the fault mode is started so as to avoid reporting faults to a user continuously or even stopping running when the drive controller cannot receive the current value. Masking the current value may cause the drive controller side to no longer wait to receive the current value, avoiding interference of the current value with the failure mode. And in the failure mode, the load can work normally.
In one possible implementation, when the load is a fan and the drive controller is a fan drive controller, the method includes: detecting whether a sampling operational amplifier circuit of a fan driving controller of an air conditioner is abnormal or not; if so, starting a fault mode to enable the fan to work normally when the sampling operational amplifier circuit is abnormal; the fault mode is used for indicating activation of an open-loop control program, and the open-loop control program can indicate the fan to run at a preset frequency. When the load is a fan, the heat dissipation capacity of the evaporator can be further adjusted.
It is understood that, before detecting whether the sampling operational amplifier circuit of the driving controller of the air conditioner is abnormal at step S101, the method further includes: controlling the air conditioner to be powered on and executing an initialization process. To avoid program disturbances or mutual interference.
It is understood that, before detecting whether the sampling operational amplifier circuit of the driving controller of the air conditioner is abnormal at step S101, the method further includes: data associated with the open loop control program is stored. Taking the load as the fan for explanation, the open-loop control program can instruct the fan to operate at a preset frequency. When a plurality of sets of open-loop control programs are stored, the fan can be indicated to run at a plurality of preset frequencies, namely, in a variable-frequency running state. It can be understood that when the operational amplifier sampling circuit is abnormal, it has no meaning whether to feed back a current value, so as to avoid the fan from stopping running, data related to the open-loop control program can be stored during early debugging, and in a fault mode, the motor is controlled to run in a fixed running mode (i.e. the open-loop control program is activated).
In one possible implementation, as shown in fig. 3, when the air conditioner is in the failure mode, the method further includes:
step S201, sending prompt information to a user.
The prompt information is used for prompting a user that the sampling operational amplifier circuit is abnormal and prompting the type of the abnormality;
and S202, judging whether the current environment temperature value is within a preset range, and if so, prompting a user to replace the driving controller or the main controller after the air conditioner is powered off.
It should be understood that the fault signal lamp is only an example, and the prompt message may be sent to the user by voice broadcast. Therefore, the user can quickly receive the information that the air conditioner has faults and clearly determine the fault type so as to conveniently contact maintenance personnel for maintenance. Or the fault type is reported to a manufacturer server, so that the manufacturer can collect the fault type and relevant information, and the performance of the air conditioner is improved in subsequent production. And the load can be continuously operated in the environment when the environmental temperature is special and inconvenient to repair. When the ambient temperature value is in the preset range, the air conditioner is stopped for repairing to avoid the damage of the air conditioner.
The above-described embodiment explains how the drive controller controls the operation of the corresponding load in the failure mode. It is understood that the method further comprises: if the sampling operational amplifier circuit is not abnormal, starting a normal mode; wherein the normal mode is used to indicate skipping of the open loop control procedure.
Further, the load is taken as a fan for explanation, and even if the sampling operational amplifier circuit is abnormal, the communication circuit between the main controller and the driving controller is not abnormal. After activating the open-loop control procedure or skipping the open-loop control procedure, the method further comprises:
decoding the remote control information through an infrared remote control receiver positioned at the side of the main controller to determine an operation mode; respectively receiving environment temperature information and pipeline temperature information through an environment temperature sensor and a pipeline temperature sensor which are positioned on the side of a main controller, and controlling the main controller to send a first signal to an electronic expansion valve according to an operation mode, the environment temperature information and the pipeline temperature information; sending a second signal to the fan driving controller to enable the electronic expansion valve to adjust the opening degree of the electronic expansion valve according to the first signal; and enabling the fan driving controller to adjust the rotating speed of the fan through the driving circuit according to the second signal; wherein, the operation mode is a cooling mode or a heating mode. The specific adjusting mode is as follows: the infrared remote control receiver can determine the operation mode, set the gear of the fan and set the temperature value by decoding the remote control information. The main controller can send a second signal to the fan driving controller according to the fan gear, the running mode, the set temperature value and the difference value between the environmental temperature information set by a user through the remote controller so as to adjust the rotating speed of the fan. It should be noted that the fan driving controller receives the signal sent by the main controller to further adjust the rotation speed of the fan. Rather than the frequency of the fan. After adjusting the rotational speed of the fan, the method further comprises: and re-detecting whether the sampling operational amplifier circuit is abnormal or not at preset time intervals. The preset time can be set by a user according to actual needs and the performance of the air conditioner, so that the monitoring efficiency can be improved, the abnormal fault tolerance and the anti-interference performance of the air conditioner are further improved, and the use experience of the user is improved.
Fig. 4 is a logic diagram illustrating that an abnormal fault tolerance control method according to an embodiment of the present invention is applied to an air conditioner, wherein a load is a fan, and the method includes:
s301, initializing system power-on;
step S302, judging whether the operational amplifier sampling circuit has a fault; if yes, executing step S303; if not, executing step S304;
step S303, a fault operation mode; after the execution is finished, executing step S306;
step S304, a normal operation mode;
step S305, skipping an open-loop control program;
step S306, activating a switch control program;
step S307, detecting the temperature of the pipeline; detecting the ambient temperature;
step S308, adjusting the opening of the electronic expansion valve;
step S309, a communication circuit;
wherein, the communication circuit is used for connecting the main controller and the fan drive controller.
Step S310, driving a circuit;
the fan driving controller can send an adjusting instruction to the driving circuit through the fan driving program control center so as to adjust the rotating speed of the fan.
Step S311, adjusting the rotating speed of the fan; after the execution is completed, the process returns to step S302.
It should be noted that fig. 4 is a logic diagram; for example, steps S309 and S310 do not represent methods, but represent hardware configurations that need to be applied in the flow.
A brief description of the logic diagram shown in fig. 4 will be given. The easily damaged points of the current operational amplifier sampling circuit are inaccurate bias voltage 1.65VDC output, invalid operational amplifier and large deviation of the resistance value of the sampling resistor. When the air conditioner unit is powered on, firstly checking whether the operational amplifier sampling circuit is normal, and if so, entering a normal operation mode; and if the abnormal operation is detected, entering a fault operation mode. Under the normal operation mode, through main control unit's peripheral device, detect pipeline temperature and ambient temperature and current operation mode, adjust the electronic expansion valve aperture correspondingly, reach the effect of adjusting the size of refrigerant flow. And the main controller can send an instruction to the fan driving controller through the communication circuit so as to adjust the rotating speed of the fan and achieve the effect of adjusting the heat dissipation capacity of the evaporator. When the system is abnormal, the system enters a fault operation mode, the system automatically activates an open-loop control program at the moment, and shields the current value detected by the current operational amplifier sampling circuit to control the fan to operate at a preset frequency.
In order to realize the open-loop control of the operation of the fan, enough data related to the regulation and control of the operation of the fan needs to be stored in an open-loop control program through experiments before the fan drive controller is designed. And under the fault operation mode, the fan can not stop operating, and fault information can be reported to customers or maintenance personnel by means of a communication circuit, and the professional can judge the abnormal type through a fault lamp signal. And under the condition that the current ambient temperature is artificially processed, the driving controller is replaced by power failure.
Therefore, when the sampling operational amplifier circuit is abnormal, the open-loop control program can be started in a fault mode, so that the fan can still run at the preset frequency without stopping running. Therefore, the abnormal fault tolerance and the anti-interference performance of the air conditioner are improved, the adaptive capacity of the air conditioner is improved, and the use experience and the comfort level of a user are improved to a certain extent.
Fig. 5 shows a block diagram of an air conditioner for performing the method according to the above embodiment, the air conditioner including the driving controller 1,
the air conditioner is used for detecting whether a sampling operational amplifier circuit 2 of a driving controller 1 of the air conditioner is abnormal or not; if yes, starting a fault mode;
and the driving controller 1 is used for activating an open-loop control program in a fault mode so that the load 3 corresponding to the driving controller 1 operates in a preset state when the sampling operational amplifier circuit 2 is abnormal.
Therefore, when the sampling operational amplifier circuit is abnormal, the fault mode can be started, namely, the open-loop control program is started, so that the load can still run in a preset state without stopping running. Therefore, the abnormal fault tolerance and the anti-interference performance of the air conditioner are improved, the adaptive capacity of the air conditioner is improved, and the use experience and the comfort level of a user are improved to a certain extent.
Fig. 6 is a schematic structural view illustrating an air conditioner according to an embodiment of the present invention; as shown in fig. 5 and fig. 6, the air conditioner is also used for controlling the driving controller 1 to shield the current value detected by the sampling operational amplifier circuit 2 in the failure mode; the sampling operational amplifier circuit is also used for starting a normal mode if the sampling operational amplifier circuit is not abnormal; wherein the normal mode is used to instruct the drive controller 1 to skip the open-loop control routine. Fig. 6 illustrates a fan as a load.
In one possible implementation, as shown in fig. 5 and 6, the air conditioner further includes: a main controller 4 connected with the fan driving controller 1 through a communication circuit, and an infrared remote control receiver 5 connected with the main controller 4; an infrared remote control receiver 5 for decoding the remote control information to determine the operation mode; the main controller 4 is used for sending a first signal to the electronic expansion valve 6 according to the running mode and sending a second signal to the fan driving controller 1; the electronic expansion valve 6 is used for adjusting the opening degree of the electronic expansion valve according to the first signal; the fan driving controller 1 is used for receiving the second signal through the communication circuit and further adjusting the rotating speed of the fan 3 through the driving circuit 7; wherein, the operation mode is a cooling mode or a heating mode.
In one possible implementation, the air conditioner further includes: the fault signal lamp 8 is connected with the fan driving controller 1, and the fault signal lamp 8 is used for sending prompt information to a user, and the prompt information is used for prompting the user that the sampling operational amplifier circuit 2 is abnormal and prompting the type of the abnormality; and the fault signal lamp 8 is also used for prompting a user to replace the fan driving controller 1 or the main controller 4 after the air conditioner is powered off when the current environmental temperature value is within a preset range.
Further, the air conditioner further includes: the environment temperature sensor 9 and the pipeline temperature sensor 10 are respectively connected with the main controller 4, and the environment temperature sensor 9 is used for receiving environment temperature information; a pipeline temperature sensor 10 for receiving pipeline temperature information; and the main controller 4 is used for adjusting the opening degree of the electronic expansion valve 6 according to the operation mode, the environment temperature information and the pipeline temperature information. The specific way of adjusting the opening degree of the electronic expansion valve 6 is the prior art, and is not described herein again. And fig. 6 shows the display 11 and the infrared remote control receiver 5 disposed on the display 11, it will be understood that the infrared remote control receiver 5 may also be disposed directly on the main controller 4. The air conditioner is also used for starting a normal mode when the sampling operational amplifier circuit 2 is abnormal; the main controller 4 is also used for sending a signal to the fan driving controller 1 through the operational amplifier sampling circuit 2 when the air conditioner is in a normal mode; and the fan driving controller 1 is used for further regulating the rotating speed of the fan 3 through the driving circuit 7 according to the signal. It should be noted that, in fig. 6, the fan drive program control center is equivalent to the fan drive controller, and is denoted by reference numeral 1. The fan IPM module is equivalent to the driving circuit, and is numbered 7.
In one possible implementation, the air conditioner further includes: a memory for storing data associated with an open loop control program.
Fig. 7 shows an abnormal fault-tolerant control device according to an embodiment of the present invention, wherein the device is configured to execute the method shown in fig. 1, and the device includes:
the detection module 601 is used for detecting whether a sampling operational amplifier circuit of a driving controller of the air conditioner is abnormal or not;
the starting module 602 is configured to start a fault mode when the sampling operational amplifier circuit is abnormal, so that the load can normally operate when the sampling operational amplifier circuit is abnormal; the fault mode is used for indicating to activate an open-loop control program, and the open-loop control program can indicate the load to operate in a preset state.
In a possible implementation manner, the starting module 602 is further configured to control the driving controller to shield the current value detected by the sampling op-amp circuit in the failure mode.
In a possible implementation manner, the starting module 602 is further configured to start the normal mode if the sampling op-amp circuit has no abnormality; wherein the normal mode is used to indicate skipping of the open loop control procedure.
In one possible implementation, the apparatus further includes: the decoding module is used for decoding the remote control information through an infrared remote control receiver positioned at the side of the main controller after the open-loop control program is activated or skipped so as to determine the running mode; the adjusting module is used for controlling the main controller to send a first signal to the electronic expansion valve according to the operation mode; sending a second signal to the driving controller to enable the electronic expansion valve to adjust the opening degree of the electronic expansion valve according to the first signal; and enabling the driving controller to adjust the rotating speed of the fan through the driving circuit according to the second signal; wherein, the operation mode is a cooling mode or a heating mode.
In a possible implementation manner, the detection module 601 is further configured to, after controlling the main controller to send a second signal to the driving controller, so that the driving controller drives the corresponding load to work through the driving circuit according to the second signal, re-detect whether the sampling operational amplifier circuit is abnormal every preset time.
In one possible implementation, the apparatus further includes: the prompting module is used for sending prompting information to a user when the air conditioner is in a fault mode, and the prompting information is used for prompting the user that the sampling operational amplifier circuit is abnormal and prompting the type of the abnormality; and judging whether the current ambient temperature value is within a preset range, if so, prompting a user to replace the driving controller or the main controller after the air conditioner is powered off.
Therefore, when the sampling operational amplifier circuit is abnormal, the fault mode can be started, namely, the open-loop control program is started, so that the load can still run in a preset state without stopping running. Therefore, the abnormal fault tolerance and the anti-interference performance of the air conditioner are improved, the adaptive capacity of the air conditioner is improved, and the use experience and the comfort level of a user are improved to a certain extent.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a mobile terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments illustrated in the drawings, the present invention is not limited to the embodiments, which are illustrative rather than restrictive, and it will be apparent to those skilled in the art that many more modifications and variations can be made without departing from the spirit of the invention and the scope of the appended claims.
Claims (20)
1. An abnormal fault tolerance control method is applied to an air conditioner, and comprises the following steps:
detecting whether a sampling operational amplifier circuit of a driving controller of the air conditioner is abnormal or not;
if so, starting a fault mode to enable the load corresponding to the driving controller to work normally when the sampling operational amplifier circuit is abnormal;
wherein the fault mode is used to indicate activation of an open loop control program capable of indicating operation of the load in a preset state;
the start-up failure mode further comprises:
controlling the driving controller to shield the current value detected by the sampling operational amplifier circuit;
before detecting whether a sampling operational amplifier circuit of a driving controller of the air conditioner is abnormal, the method further includes: storing data associated with the open loop control program;
the open-loop control program can indicate the fan to run at a preset frequency, and when a plurality of sets of open-loop control programs are stored, the fan can be indicated to run at a plurality of preset frequencies, namely, the fan is in a variable-frequency running state.
2. The method of claim 1, further comprising:
if the sampling operational amplifier circuit is not abnormal, starting a normal mode;
wherein the normal mode is to instruct the drive controller to skip an open loop control procedure.
3. The method of claim 2, wherein after activating the open-loop control procedure or skipping the open-loop control procedure, the method further comprises:
decoding the remote control information through an infrared remote control receiver positioned at the side of the main controller to determine an operation mode;
controlling the main controller to send a first signal to the electronic expansion valve according to the running mode; sending a second signal to the driving controller to enable the electronic expansion valve to adjust the opening degree of the electronic expansion valve according to the first signal; and enabling the driving controller to drive the corresponding load to work through a driving circuit according to the second signal;
wherein the operation mode is a cooling mode or a heating mode.
4. The method according to claim 3, wherein after controlling the main controller to send a second signal to the driving controller so that the driving controller drives the corresponding load to operate through the driving circuit according to the second signal, the method further comprises:
and re-detecting whether the sampling operational amplifier circuit is abnormal or not at preset time intervals.
5. The method of claim 1, wherein when the air conditioner is in a failure mode, the method further comprises:
sending prompt information to a user, wherein the prompt information is used for prompting the user that the sampling operational amplifier circuit is abnormal and prompting the type of the abnormality;
and judging whether the current environment temperature value is within a preset range, if so, prompting a user to replace the driving controller or the main controller after the air conditioner is powered off.
6. The method according to any one of claims 1 to 5, wherein before detecting whether a sampling operational amplifier circuit of a driving controller of the air conditioner is abnormal, the method further comprises:
and controlling the air conditioner to be powered on and executing an initialization process.
7. The method according to any one of claims 1-5, wherein when the load is a fan and the drive controller is a fan drive controller, the method comprises:
detecting whether a sampling operational amplifier circuit of a fan driving controller of the air conditioner is abnormal or not;
if so, starting a fault mode, and controlling the fan driving controller to shield the current value detected by the sampling operational amplifier circuit so that the fan can normally work when the sampling operational amplifier circuit is abnormal;
the fault mode is used for indicating to activate an open-loop control program, and the open-loop control program can indicate the fan to run at a preset frequency.
8. An air conditioner for performing the method of any one of claims 1 to 7, the air conditioner comprising a drive controller,
the air conditioner is used for detecting whether a sampling operational amplifier circuit of a driving controller of the air conditioner is abnormal or not; if yes, starting a fault mode;
the drive controller is used for activating an open-loop control program in the fault mode so that a load corresponding to the drive controller operates in a preset state when the sampling operational amplifier circuit is abnormal;
the air conditioner further includes: a memory for storing data related to the open loop control program;
the open-loop control program can indicate the fan to run at a preset frequency, and when a plurality of sets of open-loop control programs are stored, the fan can be indicated to run at a plurality of preset frequencies, namely, the fan is in a variable-frequency running state.
9. The air conditioner according to claim 8,
and the air conditioner is also used for controlling the driving controller to shield the current value detected by the sampling operational amplifier circuit in the fault mode.
10. The air conditioner according to claim 8,
the air conditioner is also used for starting a normal mode if the sampling operational amplifier circuit is not abnormal; wherein the normal mode is to instruct the drive controller to skip an open loop control procedure.
11. The air conditioner according to claim 8, further comprising: the infrared remote control receiver is connected with the main controller;
the infrared remote control receiver is used for decoding remote control information after an open-loop control program is activated or skipped so as to determine an operation mode;
the main controller is used for sending a first signal to the electronic expansion valve according to the running mode and sending a second signal to the driving controller;
the electronic expansion valve is used for adjusting the opening degree of the electronic expansion valve according to the first signal;
the driving controller is used for receiving the second signal through the communication circuit and further driving the corresponding load to work through the driving circuit;
wherein the operation mode is a cooling mode or a heating mode.
12. The air conditioner according to claim 8, further comprising: a fault signal lamp connected with the driving controller,
the fault signal lamp is used for sending prompt information to a user, and the prompt information is used for prompting the user that the sampling operational amplifier circuit is abnormal and prompting the type of the abnormality;
the fault signal lamp is also used for prompting a user to replace the driving controller or the main controller after the air conditioner is powered off when the current ambient temperature value is within a preset range.
13. The air conditioner according to any one of claims 8 to 12,
the air conditioner is also used for executing an initialization process after being powered on.
14. The air conditioner according to any one of claims 8 to 12, wherein when the load is a fan and the driving controller is a fan driving controller,
the air conditioner is also used for detecting whether a sampling operational amplifier circuit of a fan driving controller of the air conditioner is abnormal or not; if so, starting a fault mode and controlling the fan driving controller to shield the current value detected by the sampling operational amplifier circuit;
and the drive controller is used for activating an open-loop control program in the fault mode so that the fan runs at a preset frequency when the sampling operational amplifier circuit is abnormal.
15. An exception-tolerant control apparatus for performing the method of any one of claims 1 to 7, the apparatus comprising:
the detection module is used for detecting whether a sampling operational amplifier circuit of a driving controller of the air conditioner is abnormal or not;
the starting module is used for starting a fault mode when the sampling operational amplifier circuit is abnormal so that a load corresponding to the driving controller can normally work when the sampling operational amplifier circuit is abnormal; wherein the fault mode is used to indicate activation of an open loop control routine capable of indicating operation of the load in a preset state.
16. The apparatus of claim 15,
the starting module is further configured to control the driving controller to shield the current value detected by the sampling operational amplifier circuit in the fault mode.
17. The apparatus of claim 15,
the starting module is further used for starting a normal mode if the sampling operational amplifier circuit is not abnormal; wherein the normal mode is used to indicate skipping of an open loop control procedure.
18. The apparatus of claim 17, further comprising:
the decoding module is used for decoding the remote control information through an infrared remote control receiver positioned at the side of the main controller after the open-loop control program is activated or skipped so as to determine the running mode;
the adjusting module is used for controlling the main controller to send a first signal to the electronic expansion valve according to the running mode; sending a second signal to the driving controller to enable the electronic expansion valve to adjust the opening degree of the electronic expansion valve according to the first signal; and enabling the driving controller to drive the corresponding load to work through a driving circuit according to the second signal; wherein the operation mode is a cooling mode or a heating mode.
19. The apparatus of claim 18,
the detection module is further configured to control the main controller to send a second signal to the driving controller, so that the driving controller drives a corresponding load to work through a driving circuit according to the second signal, and then re-detect whether the sampling operational amplifier circuit is abnormal every preset time.
20. The apparatus of claim 15, further comprising:
the prompting module is used for sending prompting information to a user when the air conditioner is in a fault mode, wherein the prompting information is used for prompting the user that the sampling operational amplifier circuit is abnormal and prompting the type of the abnormality; and judging whether the current environment temperature value is within a preset range, if so, prompting a user to replace the driving controller or the main controller after the air conditioner is powered off.
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| CN110044035A (en) * | 2019-05-16 | 2019-07-23 | 珠海格力电器股份有限公司 | Variable frequency air-conditioner controller fault tolerable circuit and control method |
| CN112254272A (en) * | 2020-10-16 | 2021-01-22 | 珠海格力电器股份有限公司 | Control method of air conditioner and air conditioner |
| CN115371200A (en) * | 2022-08-09 | 2022-11-22 | 珠海格力电器股份有限公司 | Air conditioner discharging method and device, storage medium and air conditioner |
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| US5440895A (en) * | 1994-01-24 | 1995-08-15 | Copeland Corporation | Heat pump motor optimization and sensor fault detection |
| CN101737905B (en) * | 2009-12-22 | 2012-06-13 | 佛山市中格威电子有限公司 | Energy-saving method of air conditioner and economizer for air conditioner |
| US9244471B2 (en) * | 2013-03-14 | 2016-01-26 | Siemens Industry, Inc. | Methods and systems for remotely monitoring and controlling HVAC units |
| CN104764148A (en) * | 2015-03-24 | 2015-07-08 | 广东美的制冷设备有限公司 | Control method and control device of outdoor fan and air conditioner |
| CN204787077U (en) * | 2015-06-19 | 2015-11-18 | 芜湖小天鹅制冷设备有限公司 | Drive arrangement and air conditioner of indoor fan of air conditioner |
| CN105650827B (en) * | 2016-03-02 | 2019-01-25 | 珠海格力电器股份有限公司 | A kind of adaptive failure progress control method, system and air-conditioner set |
| CN106091244A (en) * | 2016-06-07 | 2016-11-09 | 珠海格力电器股份有限公司 | The method and device of air-conditioning troubleshooting |
| CN106382726B (en) * | 2016-09-09 | 2018-12-28 | 深圳市共济科技股份有限公司 | A kind of Fault Locating Method and positioning system of precision air conditioner equipment |
| CN107317538A (en) * | 2017-06-19 | 2017-11-03 | 江苏永钢集团有限公司 | A kind of method of Frequency Converter Control motor work |
| CN107165849B (en) * | 2017-06-24 | 2019-03-01 | 山东超越数控电子有限公司 | A kind of machine box for server control method for fan based on Redundant Control strategy |
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