CN112539523A - Control method and control device for air conditioner communication, communication system and storage medium - Google Patents

Control method and control device for air conditioner communication, communication system and storage medium Download PDF

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Publication number
CN112539523A
CN112539523A CN202011429708.0A CN202011429708A CN112539523A CN 112539523 A CN112539523 A CN 112539523A CN 202011429708 A CN202011429708 A CN 202011429708A CN 112539523 A CN112539523 A CN 112539523A
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data model
target data
value
voltage
voltage value
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CN112539523B (en
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孙良伟
梅利军
何桂泽
陈续朗
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Midea Group Co Ltd
GD Midea Heating and Ventilating Equipment Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
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Midea Group Co Ltd
GD Midea Heating and Ventilating Equipment Co Ltd
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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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • 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
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices

Abstract

The invention provides a control method, a control device, a communication system and a storage medium for air conditioner communication, wherein the control method for the air conditioner communication comprises the following steps: acquiring a first voltage signal and a second voltage signal in the voltage signals of the bus; determining a first average voltage value corresponding to the first voltage signal and a second average voltage value corresponding to the second voltage signal; obtaining a target data model consistent with the model in the stored model database according to the first average voltage value, the second average voltage value, the stored preset threshold value and the reference voltage on the bus; data information in the target data model is output, the data model is determined according to the average voltage value, the pre-stored preset threshold value and the reference voltage on the bus by averaging the first voltage signal and the second voltage signal on the bus, and the reliability of signal correction and restoration is improved and the stability of signal transmission is improved by the mode of determining the model with various parameters.

Description

Control method and control device for air conditioner communication, communication system and storage medium
Technical Field
The invention relates to the technical field of communication control, in particular to a control method, a control device, a communication system and a storage medium for air conditioner communication.
Background
In the related technical scheme, when inductance, capacitance, resistance, signal reflection and the like in an air conditioner and other communication systems are interfered, a detected signal is distorted.
Specifically, the sampling mode of the MCU in the air conditioner and other communication systems is generally to frequency-multiply the frequency of the crystal oscillator, and after sampling for a certain number of times, read the sampled data, such as identifying the high and low levels of the communication signal, and the MCU in the air conditioner and other communication systems may set a detection threshold, so that the data read by the MCU may be incorrect when the distortion occurs.
Taking 485 communication as an example, the detection threshold is-200 mV to 200mV, when the voltage value on the bus is greater than 200mV, "1" is considered to be recognized from the bus, when the voltage value on the bus is less than-200 mV, "0" is considered to be recognized from the bus, and when the above distortion occurs, as shown in fig. 6, the voltage value of the bus differential signal is 0V in a normal condition, the output signal of the communication interface chip is "1", and when the bus signal fluctuates due to interference, the communication interface chip outputs an erroneous signal "0".
As shown in fig. 7, for the communication line being too long or the influence of resistance and capacitance, when the communication rate is fast, the signal transmission on the bus changes slowly, and the time for the communication interface chip to output "1" is shortened according to the detection threshold of the communication interface chip, such as-200 mV to 200mV of 485 communication, which finally causes the quality of communication to be degraded.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the present invention is to provide a control method of air conditioner communication.
In a second aspect of the present invention, a control device for air conditioner communication is provided.
A third aspect of the present invention is to provide a communication system.
A fourth aspect of the present invention is to provide a readable storage medium.
In view of the above, according to a first aspect of the present invention, there is provided a control method of air conditioner communication in which an air conditioner is connected to a bus, the control method of air conditioner communication including: acquiring a first voltage signal and a second voltage signal in the voltage signals of the bus; determining a first average voltage value corresponding to the first voltage signal and a second average voltage value corresponding to the second voltage signal; obtaining a target data model consistent with the model in the stored model database according to the first average voltage value, the second average voltage value, the stored preset threshold value and the reference voltage on the bus; and outputting the data information in the target data model.
In the technical scheme of the application, the voltage signal in the bus is detected to obtain a data model corresponding to the voltage signal in the bus, the data model is compared with the models in the stored data model library, and if the comparison is consistent, the data information in the data model (namely the data information in the target data model in the application) which is consistent in comparison is output. In the process, the voltage signal on the bus is identified by adopting a model comparison mode, so that the abnormal signal data obtained by detection caused by the interference of inductance, capacitance, resistance, signal reflection and the like in an air conditioner and other communication systems is reduced.
Specifically, according to the technical scheme, the first voltage signal and the second voltage signal on the bus are averaged, the data model is determined according to the obtained average voltage value, the pre-stored preset threshold value and the reference voltage on the bus, and the reliability of signal correction and restoration is improved and the stability of signal transmission is improved due to the mode of determining the model with various parameters.
In addition, the control method for air conditioner communication in the above technical solution provided by the present invention may further have the following additional technical features:
in any one of the above technical solutions, the preset threshold includes a first preset threshold, and the control method of air conditioner communication includes: and determining the target data model as a first target data model or a second target data model based on the fact that the difference value between the first average voltage value and the second average voltage value is larger than a first preset threshold value.
In the technical scheme, if the difference value between the calculated first average voltage value and the second average voltage value is too large, that is, greater than a first preset threshold value, it is determined that the signal transmitted on the bus has a large difference, considering that the existing air conditioner uses binary "0" and "1" for coding control, if the transmission is performed on the bus with "0" and "1", that is, the acquired voltage signal represents one "0" and one "1", the difference value between the calculated first average voltage value and the second average voltage value is very large, therefore, the case that the difference value obtained by calculation is greater than the preset threshold value can be taken as a data model, considering that the case that the difference value between the first average voltage value and the second average voltage value is large includes two cases of "0", "1" or "1" and "0", and therefore, the application introduces a first target model and a second target data model, so as to further determine the target data model when the difference between the first average voltage value and the second average voltage value is large.
It can be understood that, in the technical scheme of the application, by calculating the difference value of the first average voltage value and the second average voltage value, and comparing the obtained difference value with a first preset threshold value, realizing the identification of the voltage signal on the bus according to the comparison result, since the above process is not determined according to the real-time level on the bus, the above technical solution of the present application can effectively reduce the occurrence of malformation of the read data described in the background of the present application, and at the same time, in the application, the influence of overlong communication lines or resistance and capacitance can be effectively reduced, and when the communication speed is higher, the signal transmission on the bus is slow in change, which causes the problem of communication quality degradation, through the technical scheme, the air conditioner can receive accurate data when the data transmission is carried out through the bus.
In any of the above technical solutions, the step of determining that the target data model is the first target data model or the second target data model specifically includes: determining the target data model as a first target data model based on the difference value between the first average voltage value and the second average voltage value being greater than a first preset threshold value; and determining the target data model as a second target data model based on the fact that the difference value between the second average voltage value and the first average voltage value is larger than a first preset threshold value.
In this embodiment, as described above, the first average voltage value and the second average voltage value have a large difference, including two cases of "0", "1" and "0", and the signal on the bus is a signal that changes with time, and the first average voltage value and the second average voltage value are signals collected on the bus with time, so that the first target data model and the second target data model can be distinguished by using the magnitude relationship between the first average voltage value and the second average voltage value when the order of the first voltage signal and the second voltage signal is known.
Specifically, the target data model is considered as the first target data model when the value of the first average voltage value larger than the second average voltage value exceeds a first preset threshold, and conversely, the target data model is considered as the second target data model when the value of the second average voltage value larger than the first average voltage value exceeds the first preset threshold.
In this embodiment, the first average voltage value and the second average voltage value are compared in magnitude to confirm the target data model and further obtain the data information corresponding to the target data model, so as to effectively reduce the occurrence of malformation of read data described in the background art of the present application.
In any of the above technical solutions, the preset threshold further includes a second preset threshold, and the control method of air conditioner communication further includes: determining the target data model as a third target data model based on the difference value between the first average voltage value and the reference voltage and the difference value between the second average voltage value and the reference voltage being greater than a second preset threshold value; and determining the target data model as a fourth target data model based on that the difference value between the first average voltage value and the reference voltage and the difference value between the second average voltage value and the reference voltage are simultaneously less than or equal to a second preset threshold value.
In the technical scheme, when it is detected that the difference value between the first average voltage value and the second average voltage value is smaller than or equal to a first preset threshold value, the data transmitted on the current communication bus is considered to be two 1 s or two zeros, wherein the two 1 s are "1" and "1", and the two zero bits are "0" and "0". In the case of an air conditioner, where "1" and "0" respectively represent two completely different pieces of data, in order to distinguish the pieces of data from "0" and "1", in the case where it is determined that the voltage signal on the bus is not the first target data model and the second target data model, it is necessary to further determine whether the voltage signal on the bus is the third target data model or the fourth target data model.
Specifically, two "1" and "1" may be understood as two consecutive high levels, and two "0" and "0" may be understood as two consecutive low levels, wherein the high level and the low level are determined based on a reference voltage, based on which it is preliminarily determined whether the voltage signal corresponds to the first target data model or the second target data model by comparing a difference value of the first average voltage value and the second average voltage value with a first preset threshold value, in a case where the difference value is less than or equal to the first preset threshold value, it is considered that the data model to which the voltage signal corresponds is not the first target data model and the second target data model, in which case, the first average voltage value, the second average voltage value are compared with the reference voltage, and in a case where the difference values of the first average voltage value, the second average voltage value and the reference voltage value are all greater than the second preset threshold value, the voltage signal of the bus is considered to be two high level signals, which corresponds to the third target data model in the present application. If the difference values between the first average voltage value, the second average voltage value and the reference voltage value are all lower than the second preset threshold value, the voltage signal of the bus is considered to be two low-level signals, and the fourth target data model corresponds to the fourth target data model.
In the technical scheme, voltage distribution of the voltage signal on the bus can be represented by using the reference voltage, and then data analysis is realized, so that the situation that the read data recorded in the background technology of the application is malformed can be effectively reduced, and meanwhile, in the application, the problem that due to the fact that a communication line is too long or the influence of resistance and capacitance is caused, when the communication speed is high, the signal transmission on the bus is slow in change, and the communication quality is reduced can be effectively reduced.
In any of the above technical solutions, when the voltage on the bus of the communication chip is a set voltage, the air conditioner is considered to perform data communication through the bus, and the set voltage is the reference voltage in the present application.
In any of the above technical solutions, the step of obtaining a first voltage signal and a second voltage signal in the voltage signals of the bus specifically includes: starting timing based on the sampling voltage of the voltage signal of the bus as a reference voltage; based on the fact that the timing duration is greater than or equal to the preset duration, the voltage signal of the bus is sampled according to the preset sampling period, the voltage signal collected in the first half of the preset sampling period is used as the first voltage signal, and the voltage signal collected in the second half of the preset sampling period is used as the second voltage signal.
In the technical scheme, the time for acquiring the voltage signal is specifically limited, specifically, due to the influence of cables and a laying environment, an oscillation or interference signal is easily formed at the initial position of the platform corresponding to the reference voltage, and the voltage signal is acquired at the position, so that the output data is inconsistent with the actual data.
In order to reduce the above situation, when the voltage signal on the bus is the reference voltage, timing is started, and when the timing duration exceeds the preset duration, the voltage signal on the bus is sampled to obtain the voltage signal.
In any of the above technical solutions, the method further includes: acquiring the communication rate of the air conditioner; and determining a preset sampling period according to the communication rate.
In any of the above technical solutions, the method further includes: and constructing a model database, wherein any data model in the model database is a two-bit binary model.
In the technical scheme, a two-bit binary model is constructed so that a voltage signal can be restored, specifically, a common communication protocol is adopted, one frame of data comprises tens to tens of bytes, each byte has 10-bit data, a data model needs to be established for the 10-bit data, one byte generally comprises a start bit "0" and a stop bit "1", the start bit "0" and the stop bit "1" are determined, the middle 8 bits are used for data transmission, and then the 8 data are divided into 2+2+ 8 bits for processing, namely, two bits store one model, 2 bits store one model, and the data are divided into 8 bits2The working mode is that firstly, the comparison of the two previous bits is carried out, the data of two bits are output after the comparison of the two successful bits is carried out, then, the two bits are given again after the comparison is successful, the two bits are output after the comparison is carried out, and the comparison is carried out in sequence until the data of 8 bits are output.
According to a second aspect of the present invention, there is provided a control device for air conditioner communication, an air conditioner being connected to a bus, the control device for air conditioner communication comprising: the acquisition unit is used for acquiring a first voltage signal and a second voltage signal in the voltage signals of the bus; the determining unit is used for determining a first average voltage value corresponding to the first voltage signal and a second average voltage value corresponding to the second voltage signal; obtaining a target data model consistent with the model database according to the first average voltage value, the second average voltage value, the stored preset threshold value and the reference voltage on the bus; and the output unit is used for outputting the data information in the target data model.
In the technical solution of the present application, a control device for air conditioner communication is provided, wherein the control device includes: the device comprises an acquisition unit, a determination unit and an output unit. The voltage signal in the bus is detected to obtain a data model corresponding to the voltage signal in the bus, the data model is compared with the models in the stored data model library, and if the comparison is consistent, the data information in the data model (namely the data information in the target data model in the application) which is consistent in comparison is output. In the process, the voltage signal on the bus is identified by adopting a model comparison mode, so that the abnormal signal data obtained by detection caused by the interference of inductance, capacitance, resistance, signal reflection and the like in an air conditioner and other communication systems is reduced.
Specifically, according to the technical scheme, the first voltage signal and the second voltage signal on the bus are averaged, the data model is determined according to the obtained average voltage value, the pre-stored preset threshold value and the reference voltage on the bus, and the reliability of signal correction and restoration is improved and the stability of signal transmission is improved due to the mode of determining the model with various parameters.
According to a third aspect of the present invention, there is provided a communication system comprising: the air conditioner communication control method comprises a processor, a memory and a program or an instruction which is stored on the memory and can run on the processor, wherein the program or the instruction realizes the steps of the air conditioner communication control method in any one of the above aspects when being executed by the processor.
According to a fourth aspect of the present invention, there is provided a readable storage medium on which a program or instructions are stored, the program or instructions, when executed by a processor, implementing the steps of the control method of air conditioner communication as in any one of the above.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart illustrating a control method of air conditioner communication according to an embodiment of the present invention;
FIG. 2 illustrates a flow chart for determining a first voltage signal and a second voltage signal in one embodiment of the invention;
FIG. 3 shows a schematic block diagram of a control device for air conditioner communication in one embodiment of the present invention;
FIG. 4 shows a schematic block diagram of a communication system in an embodiment of the invention;
FIG. 5 illustrates a waveform diagram of signals collected by an air conditioner in an embodiment of the present invention;
FIG. 6 is a waveform diagram illustrating distortion of a signal collected by an air conditioner in a related art;
fig. 7 is a waveform diagram showing distortion of a signal acquired by an air conditioner in the related art.
Detailed Description
So that the manner in which the above recited aspects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Example one
As shown in fig. 1, according to a first aspect of the present invention, there is provided an air conditioner communication control method in which an air conditioner is connected to a bus, the air conditioner communication control method including:
102, acquiring a voltage signal of a bus to obtain a first voltage signal and a second voltage signal;
104, calculating the average value of the first voltage signal to obtain a first average voltage value, and calculating the average value of the second voltage signal to obtain a second average voltage value;
106, obtaining a target data model consistent with the model in the stored model database according to the first average voltage value, the stored preset threshold value, the second average voltage value and the reference voltage on the bus;
and step 108, outputting the data information in the target data model.
In the embodiment of the present application, the voltage signal in the bus is detected to obtain a data model corresponding to the voltage signal in the bus, the data model is compared with the models in the stored data model library, and if the comparison is consistent, the data information in the data model (i.e., the data information in the target data model in the present application) that is consistent is output. In the process, the voltage signal on the bus is identified by adopting a model comparison mode, so that the abnormal signal data obtained by detection caused by the interference of inductance, capacitance, resistance, signal reflection and the like in an air conditioner and other communication systems is reduced.
Specifically, in the embodiment of the application, the first voltage signal and the second voltage signal on the bus are averaged, and the data model is determined according to the obtained average voltage value, the pre-stored preset threshold value and the reference voltage on the bus, so that the reliability of signal correction and restoration is improved and the stability of signal transmission is improved by the model determination mode of various parameters.
Example two
In this embodiment, a process of determining the target data model is specifically defined, specifically, the preset threshold includes at least a first preset threshold and a second preset threshold, and the process of determining the target data model includes:
and when the difference value between the first average voltage value and the second average voltage value is too large, such as exceeds a first preset threshold value, determining that the target data model is the first target data model or the second target data model.
In this embodiment, if the difference between the calculated first average voltage value and the second average voltage value is too large, that is, greater than the first preset threshold, it is determined that the signal transmitted on the bus has a large difference, considering that the existing air conditioner uses binary "0" and "1" for coding control, if the transmission is performed on the bus with "0" and "1", that is, the acquired voltage signal represents one "0" and one "1", the difference between the calculated first average voltage value and the second average voltage value will be large, therefore, the case where the difference between the calculated first average voltage value and the second average voltage value is greater than the preset threshold can be taken as a data model, considering that the case where the difference between the first average voltage value and the second average voltage value is large includes two cases of "0", "1" or "1", and therefore, the present application introduces the first target model and the second target data model, so as to further determine the target data model when the difference between the first average voltage value and the second average voltage value is large.
It is to be understood that, embodiments of the present application provide a voltage difference between the first average voltage value and the second average voltage value by calculating a difference value, and comparing the obtained difference value with a first preset threshold value, realizing the identification of the voltage signal on the bus according to the comparison result, since the above process is not determined according to the real-time level on the bus, the above embodiments of the present application can effectively reduce the occurrence of malformation of the read data, as described in the background of the present application, and at the same time, in the application, the influence of overlong communication lines or resistance and capacitance can be effectively reduced, and when the communication speed is higher, the signal transmission on the bus is slow in change, which causes the problem of communication quality degradation, through the embodiment, the air conditioner can receive accurate data when the data transmission is carried out through the bus.
Specifically, the process of determining the target data model specifically includes: when the difference value between the first average voltage value and the second average voltage value is too large and exceeds a first preset threshold value, determining that the target data model is a first target data model; and when the difference value between the second average voltage value and the first average voltage value is too large, and if the difference value exceeds a first preset threshold value, determining the target data model as a second target data model.
In this embodiment, as described above, the first average voltage value and the second average voltage value have a large difference, including two cases of "0", "1" and "0", and the signal on the bus is a signal that changes with time, and the first average voltage value and the second average voltage value are signals collected on the bus with time, so that the first target data model and the second target data model can be distinguished by using the magnitude relationship between the first average voltage value and the second average voltage value when the order of the first voltage signal and the second voltage signal is known.
Specifically, the target data model is considered as the first target data model when the value of the first average voltage value larger than the second average voltage value exceeds a first preset threshold, and conversely, the target data model is considered as the second target data model when the value of the second average voltage value larger than the first average voltage value exceeds the first preset threshold.
In this embodiment, the first average voltage value and the second average voltage value are compared in magnitude to confirm the target data model and further obtain the data information corresponding to the target data model, so as to effectively reduce the occurrence of malformation of read data described in the background art of the present application.
In this embodiment, the preset threshold further includes a second preset threshold, and the control method of air conditioner communication further includes: determining a difference between the first average voltage value and the reference voltage; determining a difference value between the second average voltage value and the reference voltage, and if the two difference values are simultaneously greater than a second preset threshold value, determining that the target data model is a third target data model; and if the two difference values are simultaneously smaller than or equal to a second preset threshold value, the target data model is a fourth target data model.
In this embodiment, when it is detected that the difference between the first average voltage value and the second average voltage value is smaller than or equal to the first preset threshold, the data currently transmitted on the communication bus is considered to be two 1 s or two zeros, where the two 1 s are "1" and the two zeros are "0" and "0". In the case of an air conditioner, where "1" and "0" respectively represent two completely different pieces of data, in order to distinguish the pieces of data from "0" and "1", in the case where it is determined that the voltage signal on the bus is not the first target data model and the second target data model, it is necessary to further determine whether the voltage signal on the bus is the third target data model or the fourth target data model.
Specifically, two "1" and "1" may be understood as two consecutive high levels, and two "0" and "0" may be understood as two consecutive low levels, wherein the high level and the low level are determined based on a reference voltage, based on which it is preliminarily determined whether the voltage signal corresponds to the first target data model or the second target data model by comparing a difference value of the first average voltage value and the second average voltage value with a first preset threshold value, in a case where the difference value is less than or equal to the first preset threshold value, it is considered that the data model to which the voltage signal corresponds is not the first target data model and the second target data model, in which case, the first average voltage value, the second average voltage value are compared with the reference voltage, and in a case where the difference values of the first average voltage value, the second average voltage value and the reference voltage value are all greater than the second preset threshold value, the voltage signal of the bus is considered to be two high level signals, which corresponds to the third target data model in the present application. If the difference values between the first average voltage value, the second average voltage value and the reference voltage value are all lower than the second preset threshold value, the voltage signal of the bus is considered to be two low-level signals, and the fourth target data model corresponds to the fourth target data model.
In this embodiment, the voltage distribution of the voltage signal on the bus can be represented by using the reference voltage, and then the data analysis is realized, so that the occurrence of a situation that the read data has a malformation, which is described in the background art of the present application, can be effectively reduced, and meanwhile, in the present application, the problem that the communication quality is reduced due to the fact that the communication line is too long or the influence of resistance and capacitance is caused when the communication rate is fast, and the signal transmission on the bus changes slowly, is effectively reduced.
In any of the above embodiments, when the voltage on the bus line is a set voltage, that is, the reference voltage in the present application, the air conditioner is considered to perform data communication through the bus line.
EXAMPLE III
In an embodiment of the present invention, a process of determining the first voltage signal and the second voltage signal is specifically defined, as shown in fig. 2, specifically including:
step 202, when the sampling voltage of the voltage signal of the bus is the reference voltage, timing is started;
and 204, sampling according to a preset sampling period when the timing duration is longer than a preset duration, and taking the voltage signal acquired in the first half of the preset sampling period as a first voltage signal and taking the voltage signal acquired in the second half of the preset sampling period as a second voltage signal.
In this embodiment, the timing of collecting the voltage signal is specifically defined, and specifically, due to the influence of the cable and the laying environment, an oscillation or interference signal is easily formed at the initial position of the platform corresponding to the reference voltage, and the voltage signal is collected at the position, so that the output data is inconsistent with the actual data.
In order to reduce the above situation, when the voltage signal on the bus is the reference voltage, timing is started, and when the timing duration exceeds the preset duration, the voltage signal on the bus is sampled to obtain the voltage signal.
In one embodiment, the method further comprises the following steps: acquiring the communication rate of the air conditioner; and determining a preset sampling period according to the communication rate.
In one embodiment, the method further comprises the following steps: and constructing a model database, wherein any data model in the model database is a two-bit binary model.
In this embodiment, by constructing a binary model of two bits so that the voltage signal can be restored, specifically, a common communication protocol, a frame of data includes tens to tens of bytes, each byte has 10 bits of data, a data model needs to be established for the 10 bits of data, one byte generally includes a start bit "0" and a stop bit "1", the start bit "0" and the stop bit "1" are determined, the middle 8 bits are used for data transmission, and then the 8 data are divided into 2+2+ 8 bits for processing, i.e., two bits store one model, 2 bits2The working mode is that firstly, the comparison of the two previous bits is carried out, the data of two bits are output after the comparison of the two successful bits is carried out, then, the two bits are given again after the comparison is successful, the two bits are output after the comparison is carried out, and the comparison is carried out in sequence until the data of 8 bits are output.
In any of the above embodiments, the step of sampling the voltage signal of the bus according to the preset sampling period further includes: recording the sampling voltage value as a first voltage value based on the fact that the sampling voltage value of the bus is larger than the reference voltage; recording the sampling voltage value as a second voltage value based on the fact that the duration of the sampling voltage value of the bus, which is greater than the reference voltage, is greater than or equal to a first preset duration; taking the ratio of the second voltage value to the first voltage value as the slope of the rising edge of the voltage; searching for a sampling voltage value of the bus as a maximum voltage value as a starting moment, wherein the sampling voltage value recorded after a first preset time is a third voltage value; taking the ratio of the maximum voltage value to the third voltage value as the slope of the voltage falling edge; determining a first amplitude value corresponding to the slope of the rising edge of the voltage and a second amplitude value corresponding to the slope of the falling edge of the voltage; and executing the step of taking the voltage signal acquired in the first half of the preset sampling period as the first voltage signal and taking the voltage signal acquired in the second half of the preset sampling period as the second voltage signal on the basis that the ratio of the first amplitude to the second amplitude is greater than 0.5 and less than 2.
In the embodiment, by comparing the determined first amplitude value and the determined second amplitude value, whether the waveform of the voltage rising edge and the waveform of the voltage falling edge have a large difference is determined, and in the case of the large difference, an error is output to remind a user of processing.
Specifically, according to the technical scheme of the application, whether a waveform of a voltage rising edge and a waveform of a voltage falling edge have a large difference is determined by comparing magnitude relations of amplitudes of slopes, specifically, under the condition that a difference between a first amplitude and a second amplitude is not more than half, the difference between the waveform of the voltage rising edge and the waveform of the voltage falling edge is considered to be small, the first amplitude can be larger than the second amplitude and can also be smaller than the second amplitude, and if the comparison condition is divided separately, more data need to be processed.
In order to reduce the data processing amount, the technical scheme of the application quantifies the judgment condition that the difference between the first amplitude and the second amplitude is not more than half by determining the fluctuation range of the ratio between the first amplitude and the second amplitude, specifically, the ratio needs to be more than 0.5 and less than 2, in the process of judging the difference between the waveform of the voltage rising edge and the waveform of the voltage falling edge, the judgment of the difference can be realized only by judging whether the ratio is more than 0.5 and less than 2, and through the comparison, the collected sampling voltage signals are screened, and the probability of outputting wrong data information is reduced.
Example four
In an embodiment of the present invention, as shown in fig. 3, there is provided a control device 300 for air conditioner communication, an air conditioner being connected to a bus, the control device 300 for air conditioner communication including: an obtaining unit 302, configured to obtain a voltage signal of a bus to obtain a first voltage signal and a second voltage signal; a determining unit 304, configured to calculate an average value of the first voltage signal to obtain a first average voltage value, and calculate an average value of the second voltage signal to obtain a second average voltage value; obtaining a target data model consistent with the model in the stored model database according to the first average voltage value, the stored preset threshold value, the second average voltage value and the reference voltage on the bus; and an output unit 306, configured to output the data information in the target data model.
In an embodiment of the present application, a control device 300 of air conditioner communication is proposed, wherein the control device comprises: an acquisition unit 302, a determination unit 304, and an output unit 306. The voltage signal in the bus is detected to obtain a data model corresponding to the voltage signal in the bus, the data model is compared with the models in the stored data model library, and if the comparison is consistent, the data information in the data model (namely the data information in the target data model in the application) which is consistent in comparison is output. In the process, the voltage signal on the bus is identified by adopting a model comparison mode, so that the abnormal signal data obtained by detection caused by the interference of inductance, capacitance, resistance, signal reflection and the like in an air conditioner and other communication systems is reduced.
Specifically, in the embodiment of the application, the first voltage signal and the second voltage signal on the bus are averaged, and the data model is determined according to the obtained average voltage value, the pre-stored preset threshold value and the reference voltage on the bus, so that the reliability of signal correction and restoration is improved and the stability of signal transmission is improved by the model determination mode of various parameters.
In this embodiment, the preset threshold at least includes a first preset threshold and a second preset threshold, and the determining unit 304 is specifically configured to: and when the difference value between the first average voltage value and the second average voltage value is too large, such as exceeds a first preset threshold value, determining that the target data model is the first target data model or the second target data model.
In this embodiment, if the difference between the calculated first average voltage value and the second average voltage value is too large, that is, greater than the first preset threshold, it is determined that the signal transmitted on the bus has a large difference, considering that the existing air conditioner uses binary "0" and "1" for coding control, if the transmission is performed on the bus with "0" and "1", that is, the acquired voltage signal represents one "0" and one "1", the difference between the calculated first average voltage value and the second average voltage value will be large, therefore, the case where the difference between the calculated first average voltage value and the second average voltage value is greater than the preset threshold can be taken as a data model, considering that the case where the difference between the first average voltage value and the second average voltage value is large includes two cases of "0", "1" or "1", and therefore, the present application introduces the first target model and the second target data model, so as to further determine the target data model when the difference between the first average voltage value and the second average voltage value is large.
It is understood that, in the embodiment of the present application, by calculating the difference between the first average voltage value and the second average voltage value, and comparing the obtained difference value with a first preset threshold value, realizing the identification of the voltage signal on the bus according to the comparison result, since the above process is not determined according to the real-time level on the bus, the above embodiments of the present application can effectively reduce the occurrence of malformation of the read data, as described in the background of the present application, and at the same time, in the application, the influence of overlong communication lines or resistance and capacitance can be effectively reduced, and when the communication speed is higher, the signal transmission on the bus is slow in change, which causes the problem of communication quality degradation, through the embodiment, the air conditioner can receive accurate data when the data transmission is carried out through the bus.
In this embodiment, the determining unit 304 is specifically configured to: when the difference value between the first average voltage value and the second average voltage value is too large and exceeds a first preset threshold value, determining that the target data model is a first target data model; and when the difference value between the second average voltage value and the first average voltage value is too large, and if the difference value exceeds a first preset threshold value, determining the target data model as a second target data model.
In this embodiment, as described above, the first average voltage value and the second average voltage value have a large difference, including two cases of "0", "1" and "0", and the signal on the bus is a signal that changes with time, and the first average voltage value and the second average voltage value are signals collected on the bus with time, so that the first target data model and the second target data model can be distinguished by using the magnitude relationship between the first average voltage value and the second average voltage value when the order of the first voltage signal and the second voltage signal is known.
Specifically, the target data model is considered as the first target data model when the value of the first average voltage value larger than the second average voltage value exceeds a first preset threshold, and conversely, the target data model is considered as the second target data model when the value of the second average voltage value larger than the first average voltage value exceeds the first preset threshold.
In this embodiment, the first average voltage value and the second average voltage value are compared in magnitude to confirm the target data model and further obtain the data information corresponding to the target data model, so as to effectively reduce the occurrence of malformation of read data described in the background art of the present application.
In this embodiment, the determining unit 304 is further configured to: determining a difference between the first average voltage value and the reference voltage; determining a difference value between the second average voltage value and the reference voltage, and if the two difference values are simultaneously greater than a second preset threshold value, determining that the target data model is a third target data model; and if the two difference values are simultaneously smaller than or equal to a second preset threshold value, the target data model is a fourth target data model.
In this embodiment, when it is detected that the difference between the first average voltage value and the second average voltage value is smaller than or equal to the first preset threshold, the data currently transmitted on the communication bus is considered to be two 1 s or two zeros, where the two 1 s are "1" and the two zeros are "0" and "0". In the case of an air conditioner, where "1" and "0" respectively represent two completely different pieces of data, in order to distinguish the pieces of data from "0" and "1", in the case where it is determined that the voltage signal on the bus is not the first target data model and the second target data model, it is necessary to further determine whether the voltage signal on the bus is the third target data model or the fourth target data model.
Specifically, two "1" and "1" may be understood as two consecutive high levels, and two "0" and "0" may be understood as two consecutive low levels, wherein the high level and the low level are determined based on a reference voltage, based on which it is preliminarily determined whether the voltage signal corresponds to the first target data model or the second target data model by comparing a difference value of the first average voltage value and the second average voltage value with a first preset threshold value, in a case where the difference value is less than or equal to the first preset threshold value, it is considered that the data model to which the voltage signal corresponds is not the first target data model and the second target data model, in which case, the first average voltage value, the second average voltage value are compared with the reference voltage, and in a case where the difference values of the first average voltage value, the second average voltage value and the reference voltage value are all greater than the second preset threshold value, the voltage signal of the bus is considered to be two high level signals, which corresponds to the third target data model in the present application. If the difference values between the first average voltage value, the second average voltage value and the reference voltage value are all lower than the second preset threshold value, the voltage signal of the bus is considered to be two low-level signals, and the fourth target data model corresponds to the fourth target data model.
In this embodiment, the voltage distribution of the voltage signal on the bus can be represented by using the reference voltage, and then the data analysis is realized, so that the occurrence of a situation that the read data has a malformation, which is described in the background art of the present application, can be effectively reduced, and meanwhile, in the present application, the problem that the communication quality is reduced due to the fact that the communication line is too long or the influence of resistance and capacitance is caused when the communication rate is fast, and the signal transmission on the bus changes slowly, is effectively reduced.
In any of the above embodiments, when the voltage on the bus line is a set voltage, that is, the reference voltage in the present application, the air conditioner is considered to perform data communication through the bus line.
EXAMPLE five
In an embodiment of the present invention, the obtaining unit 302 is specifically configured to start timing when a sampling voltage of a voltage signal of a bus is a reference voltage; and when the timing duration is longer than the preset duration, sampling according to a preset sampling period, and taking the voltage signal acquired in the first half of the preset sampling period as a first voltage signal and taking the voltage signal acquired in the second half of the preset sampling period as a second voltage signal.
In this embodiment, the timing of collecting the voltage signal is specifically defined, and specifically, due to the influence of the cable and the laying environment, an oscillation or interference signal is easily formed at the initial position of the platform corresponding to the reference voltage, and the voltage signal is collected at the position, so that the output data is inconsistent with the actual data.
In order to reduce the above situation, when the voltage signal on the bus is the reference voltage, timing is started, and when the timing duration exceeds the preset duration, the voltage signal on the bus is sampled to obtain the voltage signal.
In one embodiment, the obtaining unit 302 is further configured to obtain a communication rate of the air conditioner; and determining a preset sampling period according to the communication rate.
In one embodiment, the obtaining unit 302 is further configured to construct a model database, wherein any data model in the model database is a two-bit binary model.
In this embodiment, by constructing a binary model of two bits so that the voltage signal can be restored, specifically, a common communication protocol, a frame of data includes tens to tens of bytes, each byte has 10 bits of data, a data model needs to be established for the 10 bits of data, one byte generally includes a start bit "0" and a stop bit "1", the start bit "0" and the stop bit "1" are determined, the middle 8 bits are used for data transmission, and then the 8 data are divided into 2+2+ 8 bits for processing, i.e., two bits store one model, 2 bits2The working mode is that firstly, the comparison of the two previous bits is carried out, the data of two bits are output after the comparison of the two successful bits is carried out, then, the two bits are given again after the comparison is successful, the two bits are output after the comparison is carried out, and the comparison is carried out in sequence until the data of 8 bits are output.
In any of the above embodiments, the step of sampling the voltage signal of the bus according to the preset sampling period further includes: recording the sampling voltage value as a first voltage value based on the fact that the sampling voltage value of the bus is larger than the reference voltage; recording the sampling voltage value as a second voltage value based on the fact that the duration of the sampling voltage value of the bus, which is greater than the reference voltage, is greater than or equal to a first preset duration; taking the ratio of the second voltage value to the first voltage value as the slope of the rising edge of the voltage; searching for a sampling voltage value of the bus as a maximum voltage value as a starting moment, wherein the sampling voltage value recorded after a first preset time is a third voltage value; taking the ratio of the maximum voltage value to the third voltage value as the slope of the voltage falling edge; determining a first amplitude value corresponding to the slope of the rising edge of the voltage and a second amplitude value corresponding to the slope of the falling edge of the voltage; and executing the step of taking the voltage signal acquired in the first half of the preset sampling period as the first voltage signal and taking the voltage signal acquired in the second half of the preset sampling period as the second voltage signal on the basis that the ratio of the first amplitude to the second amplitude is greater than 0.5 and less than 2.
In the embodiment, by comparing the determined first amplitude value and the determined second amplitude value, whether the waveform of the voltage rising edge and the waveform of the voltage falling edge have a large difference is determined, and in the case of the large difference, an error is output to remind a user of processing.
Specifically, according to the technical scheme of the application, whether a waveform of a voltage rising edge and a waveform of a voltage falling edge have a large difference is determined by comparing magnitude relations of amplitudes of slopes, specifically, under the condition that a difference between a first amplitude and a second amplitude is not more than half, the difference between the waveform of the voltage rising edge and the waveform of the voltage falling edge is considered to be small, the first amplitude can be larger than the second amplitude and can also be smaller than the second amplitude, and if the comparison condition is divided separately, more data need to be processed.
In order to reduce the data processing amount, the technical scheme of the application quantifies the judgment condition that the difference between the first amplitude and the second amplitude is not more than half by determining the fluctuation range of the ratio between the first amplitude and the second amplitude, specifically, the ratio needs to be more than 0.5 and less than 2, in the process of judging the difference between the waveform of the voltage rising edge and the waveform of the voltage falling edge, the judgment of the difference can be realized only by judging whether the ratio is more than 0.5 and less than 2, and through the comparison, the collected sampling voltage signals are screened, and the probability of outputting wrong data information is reduced.
EXAMPLE six
In an embodiment of the third aspect of the present invention, as shown in fig. 4, a communication system 400 is proposed, wherein the communication system 400 includes: the processor 404, the memory 402 and a program or instructions stored on the memory 402 and executable on the processor 404, the program or instructions implementing the steps of the control method of air conditioner communication as in any one of the first aspect when executed by the processor 404.
In one embodiment, the air conditioner is connected with the bus, and data transmission is performed in a current transmission manner, for example, when other communication devices on the bus send data 0, a constant current M is pulled up from the bus, and when data 1 is sent, a constant current N is pulled up to the bus, where N may be 0, only a sampling resistor needs to be connected in series with a power supply, the current pulled by other communication devices on the bus passes through the sampling resistor, and a voltage is formed on the sampling resistor, and the air conditioner acquires data transmitted by other communication devices by acquiring a signal of the voltage on the sampling resistor.
In this embodiment, specifically describing the process of acquiring the target data model, specifically, the waveform of the signal collected by the air conditioner, as shown in fig. 5, where U0 is the reference voltage, and in this scheme, two bits are used as a detection period T, the voltage signal on the platform corresponding to the reference voltage is sampled at a certain fixed period T, that is, the voltage value signal is read once every time of one period T, assuming that 256 voltage signals are continuously sampled in one period, the 256 voltage signals are divided into two parts, the first 128 sampled signals and the last 128 sampled voltage signals, the average value U1 of the first 128 voltage signals and the average value U2 of the last 128 voltage signals are respectively calculated, if the voltage value of U1 is greater than the voltage value of U2 and exceeds a certain threshold λ, where the threshold λ is the first preset threshold in this application, for example, the threshold λ is 0.5V, it is considered that a reply "0" signal and a "1" signal are received; if the voltage value of U1 is less than the voltage value of U2 and exceeds a certain threshold λ, such as a threshold of 0.5V, a reply "1" signal and a "0" signal are considered to be received. If the difference between the high value and the low value of the collected 256 voltage signals does not exceed a threshold lambda, the 256 voltage signals are compared with a model of a reference voltage U0, if the voltages of the high value and the low value are compared with a reference voltage U0, and if the ratio U0 is greater than a threshold xi, wherein the threshold xi is a second preset threshold in the application, and xi can be 0.3V, two signals of '0' are considered to be received; if the difference from U0 does not exceed the threshold ξ, then two "1" signals are deemed received.
Due to the influence of cables and the laying environment, oscillation or interference signals are easily formed at the initial position of the reference platform, and sampling is not performed within a range of a fixed time T0 (namely, a preset time duration in the present application) at the initial position of the reference platform. And the sampling is not carried out for a fixed time T1 at the end, according to 8-bit or 10-bit AD, the sampling period of the voltage value detected by the processor is T, and according to the communication rate, the detection period is fixed to be T, wherein T is the preset sampling period in the application.
In the embodiment, by establishing the communication data model, comparison is performed from 2 dimensions of voltage and time, and correct communication data in the data model is output after the comparison is successful, so that the problem of communication signal errors caused by interference, cable and other external factors is solved, and the communication stability is improved.
EXAMPLE seven
In an embodiment of the fourth aspect of the present invention, a readable storage medium is proposed, on which a program or instructions are stored, which when executed by a processor, implement the steps of the control method of air conditioner communication according to any one of the first aspect.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A control method of air conditioner communication is characterized in that an air conditioner is connected with a bus, and the control method of the air conditioner communication comprises the following steps:
acquiring a first voltage signal and a second voltage signal in the voltage signals of the bus;
determining a first average voltage value corresponding to the first voltage signal and a second average voltage value corresponding to the second voltage signal;
obtaining a target data model consistent with the target data model in a model database according to the first average voltage value, the second average voltage value, a stored preset threshold value and the reference voltage on the bus;
and outputting the data information in the target data model.
2. The control method of air conditioner communication according to claim 1, wherein the preset threshold includes a first preset threshold, and the control method of air conditioner communication includes:
and determining the target data model to be a first target data model or a second target data model based on the difference value between the first average voltage value and the second average voltage value being larger than a first preset threshold value.
3. The method for controlling air conditioner communication according to claim 2, wherein the step of determining whether the target data model is a first target data model or a second target data model specifically includes:
determining the target data model as the first target data model based on the difference value between the first average voltage value and the second average voltage value being greater than the first preset threshold value;
and determining the target data model as the second target data model based on the difference value between the second average voltage value and the first average voltage value being greater than the first preset threshold value.
4. The control method of air conditioner communication according to claim 2, wherein the preset threshold further comprises a second preset threshold, the control method of air conditioner communication further comprising:
determining that the target data model is a third target data model based on that the difference value between the first average voltage value and the reference voltage and the difference value between the second average voltage value and the reference voltage are simultaneously greater than a second preset threshold value;
and determining that the target data model is a fourth target data model based on that the difference value between the first average voltage value and the reference voltage and the difference value between the second average voltage value and the reference voltage are simultaneously less than or equal to a second preset threshold value.
5. The air conditioner communication control method according to any one of claims 1 to 4, wherein the step of acquiring a first voltage signal and a second voltage signal of the voltage signals of the bus specifically includes:
starting timing based on the sampling voltage of the voltage signal of the bus as the reference voltage;
based on the timing duration being greater than or equal to the preset duration, sampling the voltage signal of the bus according to a preset sampling period,
and taking the voltage signal acquired in the first half section of the preset sampling period as the first voltage signal, and taking the voltage signal acquired in the second half section of the preset sampling period as the second voltage signal.
6. The control method of air conditioner communication according to claim 5, further comprising:
acquiring the communication rate of the air conditioner;
and determining the preset sampling period according to the communication rate.
7. The control method of air conditioner communication according to any one of claims 1 to 4, further comprising:
the model database is constructed and the model database is constructed,
wherein any one of the data models in the model database is a two-bit binary model.
8. A control device for air conditioner communication, wherein the air conditioner is connected to a bus, the control device for air conditioner communication comprising:
the acquisition unit is used for acquiring a first voltage signal and a second voltage signal in the voltage signals of the bus;
the determining unit is used for determining a first average voltage value corresponding to the first voltage signal and a second average voltage value corresponding to the second voltage signal; and
obtaining a target data model consistent with the model in the stored model database according to the first average voltage value, the second average voltage value, the stored preset threshold value and the reference voltage on the bus;
and the output unit is used for outputting the data information in the target data model.
9. A communication system, comprising: a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the control method of air conditioner communication according to any one of claims 1 to 7.
10. A readable storage medium, characterized in that the readable storage medium stores thereon a program or instructions which, when executed by a processor, implement the steps of the control method of air conditioner communication according to any one of claims 1 to 7.
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