CN114338264B - Bus communication quality control method and system, air conditioning unit and electronic equipment - Google Patents
Bus communication quality control method and system, air conditioning unit and electronic equipment Download PDFInfo
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Abstract
The invention relates to a bus communication quality control method, a system and a network controller, wherein the method comprises the steps of collecting a voltage value on a first bus communication line as a current bus communication line, and switching the first bus communication line to a second bus communication line when the voltage value is lower than a threshold value, so that when the communication quality of the first bus communication line is poorer, the system can be ensured to stably run through the second bus communication line, the problem that the system runs unstably because the communication quality of the current bus communication line cannot be detected in the prior art is solved, and the user experience degree is good and the satisfaction degree is high.
Description
Technical Field
The invention relates to the technical field of intelligent control, in particular to a bus communication quality control method and system, an air conditioning unit and electronic equipment.
Background
With the development of information technology, the building intelligent integration degree is higher and higher, and the building subsystem integration management requirement is higher and higher, so that the bus communication is more and more widely applied to building intelligence, and the stable operation of a building automatic control system is more and more important.
The related art provides a control scheme of a network controller, which realizes the acquisition and monitoring of point location data of each subsystem bus equipment by the network controller, but does not embody a control method for the bus communication quality and the data transmission stability. When the bus communication quality of the network controller is poor, there is no method for effectively detecting and improving the bus communication. In the bus communication process, the master station often simply issues commands and reads data, the communication quality cannot be visually and effectively detected, different command issuing and verification logics are made, and the execution result of the commands cannot be judged. Therefore, the situation that the communication packet is lost or the instruction is not executed in place often occurs under the condition that the bus communication quality is poor, so that the system operation is unstable, and the operation quality of the whole system is affected.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a bus communication quality control method, system, air conditioning unit and electronic device, so as to solve the problem in the prior art that the system is unstable due to the inability to detect the communication quality of the current bus communication line.
According to a first aspect of the embodiments of the present invention, there is provided a bus communication quality control method, including:
if the first bus communication line is the current bus communication line, acquiring a voltage value on the first bus communication line;
when the voltage value is lower than the threshold value, switching the first bus communication line to a second bus communication line so that the second bus communication line becomes the current bus communication line;
the first bus communication line and the second bus communication line are arranged in parallel between the master device and the slave device.
Preferably, at least one second bus communication line is provided;
when the second bus communication lines are multiple, the switching the first bus communication line to the second bus communication line includes:
the first bus communication line is randomly switched to one of the second bus communication lines.
Preferably, the method further comprises:
setting the threshold value according to the normal voltage value of the first bus communication line;
and the threshold value is dynamically adjusted according to the magnitude of the normal voltage value.
Preferably, before the collecting the voltage value on the first bus communication line, the method further includes:
after the master device and the slave devices are powered on and started, voltage values on all bus communication lines are collected, the bus communication line with the minimum difference value between the collected voltage values and the normal voltage values is selected as a first bus communication line, and the rest bus communication lines are determined as second bus communication lines.
Preferably, before collecting the voltage values on all the bus communication lines, the method further includes:
performing communication verification on all bus communication lines arranged between the master equipment and the slave equipment in parallel to check whether all the bus communication lines are in a normal standby state or not;
the method for collecting the voltage values on all the bus communication lines specifically comprises the following steps:
and collecting all voltage values on the bus communication line which is checked and displayed in a normal standby state.
Preferably, the method further comprises:
if the communication quality of the first bus communication line is poor, verifying whether the slave equipment correctly executes the communication instruction issued by the master equipment, and resending the communication instruction when judging that the slave equipment does not correctly execute the communication instruction issued by the master equipment;
the poor communication quality includes: the voltage value on the first bus communication line is lower than the threshold value for a preset duration, and/or the voltage value on the first bus communication line is lower than the threshold value at least twice.
Preferably, the determining that the slave device does not correctly execute the communication instruction issued by the master device includes:
and if the communication instruction execution result fed back by the slave equipment is inconsistent with the expected communication instruction execution result, judging that the slave equipment does not correctly execute the communication instruction issued by the master equipment.
Preferably, the master device is a network controller, and the slave device is a bus device.
According to a second aspect of the embodiments of the present invention, there is provided a bus communication quality control system, including:
the voltage acquisition unit is used for acquiring a voltage value on the first bus communication line when the first bus communication line is the current bus communication line;
the circuit switching unit is used for switching the first bus communication circuit to the second bus communication circuit when the voltage value is lower than a threshold value so as to change the second bus communication circuit into the current bus communication circuit;
the first bus communication line and the second bus communication line are arranged in parallel between the master device and the slave device.
According to a third aspect of embodiments of the present invention, there is provided an air conditioning unit comprising:
the bus communication quality control system; alternatively, the first and second liquid crystal display panels may be,
the method is used for executing the bus communication quality control method.
According to a fourth aspect of an embodiment of the present invention, there is provided an electronic apparatus including: a processor and a memory, wherein,
the memory is stored with a computer program which can be called by the processor;
the processor executes the bus communication quality control method by calling the computer program stored in the memory.
According to a fifth aspect of embodiments of the present invention, there is provided a computer-readable storage medium having stored thereon a rewritable computer program;
when the computer program runs on a computer device, the computer device is caused to execute the above-mentioned bus communication quality control method.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
the method comprises the steps of collecting a voltage value on a first bus communication line serving as a current bus communication line, judging that the communication quality of the first bus communication line is poor when the voltage value is lower than a threshold value, and switching the first bus communication line to a second bus communication line, so that when the communication quality of the first bus communication line is poor, the system can be guaranteed to be stably operated through the second bus communication line, the problem that the system is unstable in operation due to the fact that the communication quality of the current bus communication line cannot be detected in the prior art is solved, and the method is good in user experience degree and high in satisfaction degree.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a flow chart illustrating a method of bus communication quality control according to an exemplary embodiment;
FIG. 2 is a flow diagram illustrating a communication command verification method in accordance with one illustrative embodiment;
FIG. 3 is a schematic block diagram of a bus communication quality control system in accordance with an exemplary embodiment;
FIG. 4 is a schematic block diagram of a bus communication quality control system in accordance with another exemplary embodiment;
fig. 5 is a schematic block diagram of a network controller shown in accordance with an example embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Example one
Fig. 1 is a flowchart illustrating a bus communication quality control method according to an exemplary embodiment, as shown in fig. 1, the method including:
s11, if the first bus communication line is the current bus communication line, acquiring a voltage value on the first bus communication line;
step S12, when the voltage value is lower than a threshold value, switching the first bus communication line to a second bus communication line so as to change the second bus communication line into a current bus communication line;
the first bus communication line and the second bus communication line are arranged in parallel between the master device and the slave device.
It should be noted that the technical solution provided in this embodiment is applicable to a network controller.
In a specific practice, the master device is a network controller and the slave device is a bus device.
Preferably, at least one second bus communication line is provided;
when the second bus communication lines are multiple, the switching the first bus communication line to the second bus communication line includes:
the first bus communication line is randomly switched to one of the second bus communication lines.
It can be understood that, by setting a plurality of second bus communication lines, which is equivalent to setting a plurality of standby bus communication lines, when one of the bus communication lines fails, the appropriate bus communication line can be found through multiple switching, so that the communication quality between the master device and the slave device is further ensured, and the stability and reliability of the system are improved.
In a specific practice, the threshold value is set according to a normal voltage value of the first bus communication line;
and the threshold value is dynamically adjusted according to the magnitude of the normal voltage value.
And the normal voltage value is the voltage value on the bus communication line when the master equipment and the slave equipment work normally. The normal voltage value can be the average value of the voltage on the bus communication line when the master equipment and the slave equipment work normally, and can also be the mean square value of the voltage on the bus communication line, and the normal voltage value is preset according to engineering requirements in different scenes.
The threshold value is dynamically adjusted according to the magnitude of the normal voltage value, including but not limited to:
and adjusting proportionally according to the size of the normal voltage value. For example, if the normal voltage value of the first bus communication line is 5V, the threshold is set to 1V; if the normal voltage value of the first bus communication line is 2.5V, the threshold value is set to 0.5V.
And adjusting inversely proportionally according to the magnitude of the normal voltage value. For example, if the normal voltage value of the first bus communication line is 5V, the threshold is set to-1V; if the normal voltage value of the first bus communication line is 2.5V, the threshold value is set to-0.5V.
According to the positive correlation with the magnitude of the normal voltage value. For example, if the normal voltage value of the first bus communication line is 5V, the threshold is set to 2.55V; if the normal voltage value of the first bus communication line is 2.5V, the threshold value is set to 1.5V.
In specific practice, the threshold is set according to the user requirement, or according to experimental data, or according to historical experience values.
It can be understood that, in the technical scheme provided in this embodiment, by collecting the voltage value on the first bus communication line as the current bus communication line, and when the voltage value is lower than the threshold value, it is determined that the communication quality of the first bus communication line is poor, and the first bus communication line is switched to the second bus communication line, so that when the communication quality of the first bus communication line is poor, the system can be ensured to operate stably through the second bus communication line, the problem that the system is unstable in operation due to the fact that the communication quality of the current bus communication line cannot be detected in the prior art is solved, and the user experience degree is good, and the satisfaction degree is high.
In a specific practice, the step S11 may further include:
after the master device and the slave device are powered on and started, all bus communication lines arranged between the master device and the slave device in parallel are subjected to communication verification so as to check whether all the bus communication lines are in a normal standby state;
and collecting all voltage values on the bus communication lines which are checked and displayed in a normal standby state, selecting the bus communication line with the minimum difference value between the collected voltage value and the normal voltage value as a first bus communication line, and determining the rest bus communication lines as second bus communication lines.
The normal standby state refers to a state in which the bus communication line is normally connected with the master device and the slave device, and the master device and the slave device can perform normal data exchange through the bus communication line.
In a specific practice, the bus communication lines are all checked to be in a normal standby state, the master device can send a heartbeat packet (the heartbeat packet is a self-defined command word which is used for regularly informing the opposite side of the own state between the client and the server and is sent according to a certain time interval and is similar to a heartbeat) to the slave device for verification, and if the slave device receives the heartbeat packet sent by the master device, the first bus communication line is proved to be in the normal standby state.
Or, the slave device sends a heartbeat packet to the master device for verification, and if the master device receives the heartbeat packet sent by the slave device, the first bus communication line is proved to be in a normal standby state.
It can be understood that after the master device and the slave device are powered on and started, all the bus communication lines are firstly subjected to communication verification, so that when the bus communication lines are switched, the switched second bus communication line is normal, the reliability of bus communication line switching is ensured, secondary switching caused by switching failure is prevented, and the communication quality and the communication efficiency are improved.
It is understood that after the first bus communication line is switched to the second bus communication line, the second bus communication line becomes the first bus communication line;
if the communication quality of the first bus communication line is poor, a data verification algorithm can be called to verify whether the slave device correctly executes the communication instruction issued by the master device, and when the current slave device is judged not to correctly execute the communication instruction issued by the master device (if the execution result of the communication instruction fed back by the slave device is inconsistent with the execution result of the expected communication instruction, the slave device is judged not to correctly execute the communication instruction issued by the master device), the communication instruction is retransmitted;
the poor communication quality includes: the voltage value on the first bus communication line is lower than the threshold value for a preset duration, and/or the voltage value on the first bus communication line is lower than the threshold value at least twice.
In a specific practice, the preset time period is set according to user needs, experimental data or historical experience values, for example, set to 3 seconds.
The data verification algorithm is a kind of verification operation performed to ensure the integrity of data. Usually, a designated algorithm is used to calculate a check value for the original data, and the receiver calculates a check value for the original data using the same algorithm, and if the check values obtained by the two calculations are the same, the data is complete.
Since it is the prior art to call a data verification algorithm to perform data verification, this embodiment is not described in detail.
It can be understood that if the communication quality of the first bus communication circuit is poor, the bus communication quality can be improved by switching from the first bus communication circuit to the second bus communication circuit, and the stable operation of the system can be ensured. And only when the voltage value on the first bus communication line is lower than the threshold value for a preset duration, and/or the voltage value on the first bus communication line is lower than the threshold value for at least two times, the communication quality of the first bus communication line is judged to be poor, so that misjudgment can be reduced, and the stability and reliability of the system can be improved.
In a specific practice, if the communication instruction execution result fed back by the slave device is inconsistent with the expected communication instruction execution result, it is determined that the current slave device does not correctly execute the communication instruction issued by the master device.
It can be understood that when the communication quality of the monitoring bus is poor continuously, the instruction checking logic is triggered, the consistency of the receiving and sending results is checked, whether the communication instruction is executed or not can be verified, the instruction is ensured to be accurately sent to the slave equipment, the data is ensured to be effectively sent and replied, when the communication quality is unstable due to abnormal communication of the bus, the communication quality of the bus is further improved, and the operation stability of the system is enhanced.
Example two
Fig. 3 is a schematic block diagram illustrating a bus communication quality control system 100 according to an exemplary embodiment, the system 100, as shown in fig. 3, comprising:
the voltage acquisition unit 101 is used for acquiring a voltage value on the first bus communication line when the first bus communication line is the current bus communication line;
the line switching unit 102 is configured to switch the first bus communication line to a second bus communication line when the voltage value is lower than a threshold value, so that the second bus communication line becomes a current bus communication line;
the first bus communication line and the second bus communication line are provided in parallel between the master device and the slave device.
Referring to fig. 4, preferably, the system 100 further includes:
a threshold setting unit 103, configured to set the threshold according to a normal voltage value of the first bus communication line; and the threshold value is dynamically adjusted according to the magnitude of the normal voltage value.
Preferably, the system 100 further comprises:
the acquisition output unit 104 is used for being externally connected with a data acquisition unit so that a user can check the voltage value on the first bus communication line in real time through the data acquisition unit;
the data storage unit 105 is used for storing the voltage value on the first bus communication line.
It should be noted that the technical solution provided in this embodiment is applicable to a network controller.
In a specific practice, the master device is a network controller and the slave device is a bus device.
The implementation manner and the beneficial effects of each module can be referred to the description of a related step in the embodiment, which is not described again in this embodiment.
It can be understood that, in the technical scheme provided in this embodiment, by collecting the voltage value on the first bus communication line as the current bus communication line, and when the voltage value is lower than the threshold value, it is determined that the communication quality of the first bus communication line is poor, and the first bus communication line is switched to the second bus communication line, so that when the communication quality of the first bus communication line is poor, the system can be ensured to operate stably through the second bus communication line, the problem that the system is unstable in operation due to the fact that the communication quality of the current bus communication line cannot be detected in the prior art is solved, and the user experience degree is good, and the satisfaction degree is high.
EXAMPLE III
An air conditioning assembly is shown according to an exemplary embodiment, including:
the bus communication quality control system of the second embodiment; alternatively, the first and second electrodes may be,
the method for controlling the bus communication quality is used for executing the method for controlling the bus communication quality.
It can be understood that, in the technical solution provided in this embodiment, since the method can be used to execute the bus communication quality control method described in the first embodiment, the method switches the first bus communication line to the second bus communication line by acquiring a voltage value on the first bus communication line as the current bus communication line, and when the voltage value is lower than a threshold value, determining that the communication quality of the first bus communication line is poor, so that when the communication quality of the first bus communication line is poor, the system can be ensured to operate stably through the second bus communication line, thereby solving the problem that the system operation is unstable due to the fact that the communication quality of the current bus communication line cannot be detected in the prior art, and having good user experience and high satisfaction.
Example four
An electronic device is shown according to an example embodiment, comprising:
a processor and a memory, wherein,
the memory is stored with a computer program which can be called by the processor;
the processor executes the bus communication quality control method according to the first embodiment by calling the computer program stored in the memory.
It can be understood that, in the technical solution provided in this embodiment, since the method can be used to execute the bus communication quality control method described in the first embodiment, the method switches the first bus communication line to the second bus communication line by acquiring a voltage value on the first bus communication line as the current bus communication line, and when the voltage value is lower than a threshold value, determining that the communication quality of the first bus communication line is poor, so that when the communication quality of the first bus communication line is poor, the system can be ensured to operate stably through the second bus communication line, thereby solving the problem that the system operation is unstable due to the fact that the communication quality of the current bus communication line cannot be detected in the prior art, and having good user experience and high satisfaction.
EXAMPLE five
A computer readable storage medium having a rewritable computer program stored thereon according to an exemplary embodiment is shown;
when the computer program runs on a computer device, the computer device is caused to execute the bus communication quality control method according to the first embodiment.
It can be understood that, in the technical solution provided in this embodiment, since the method can be used to execute the bus communication quality control method described in the first embodiment, the method switches the first bus communication line to the second bus communication line by acquiring a voltage value on the first bus communication line as the current bus communication line, and when the voltage value is lower than a threshold value, determining that the communication quality of the first bus communication line is poor, so that when the communication quality of the first bus communication line is poor, the system can be ensured to operate stably through the second bus communication line, thereby solving the problem that the system operation is unstable due to the fact that the communication quality of the current bus communication line cannot be detected in the prior art, and having good user experience and high satisfaction.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present invention, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following technologies, which are well known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried out in the method of implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer-readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, 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.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A bus communication quality control method is characterized by comprising the following steps:
if the first bus communication line is the current bus communication line, acquiring a voltage value on the first bus communication line;
when the voltage value is lower than the threshold value, switching the first bus communication line to a second bus communication line so that the second bus communication line becomes the current bus communication line;
the first bus communication line and the second bus communication line are arranged between the master equipment and the slave equipment in parallel;
before the voltage value on the first bus communication line is collected, the method further comprises the following steps:
after the master equipment and the slave equipment are powered on and started, acquiring voltage values on all bus communication lines, selecting the bus communication line with the minimum difference value between the acquired voltage value and the normal voltage value as a first bus communication line, and determining the rest bus communication lines as second bus communication lines;
before the voltage values on all the bus communication lines are collected, the method further comprises the following steps:
performing communication verification on all bus communication lines arranged between the master equipment and the slave equipment in parallel to check whether all the bus communication lines are in a normal standby state;
the method for collecting the voltage values on all the bus communication lines specifically comprises the following steps:
collecting all voltage values on the bus communication line which is checked and displayed in a normal standby state;
the bus communication lines are all checked to be in a normal standby state, the heartbeat packet can be sent to the slave equipment through the master equipment for verification, and if the heartbeat packet sent by the master equipment is received by the slave equipment, the first bus communication line is proved to be in the normal standby state;
or, the slave device sends a heartbeat packet to the master device for verification, and if the master device receives the heartbeat packet sent by the slave device, the first bus communication line is proved to be in a normal standby state.
2. The method of claim 1,
at least one second bus communication line is arranged;
when the second bus communication lines are multiple, the switching the first bus communication line to the second bus communication line includes:
the first bus communication line is randomly switched to one of the second bus communication lines.
3. The method of claim 1, further comprising:
setting the threshold value according to the normal voltage value of the first bus communication line;
and the threshold value is dynamically adjusted according to the magnitude of the normal voltage value.
4. The method according to any one of claims 1 to 3, further comprising:
if the communication quality of the first bus communication circuit is poor, checking whether the slave equipment correctly executes the communication instruction issued by the master equipment, and retransmitting the communication instruction when judging that the slave equipment does not correctly execute the communication instruction issued by the master equipment;
the poor communication quality includes: the voltage value on the first bus communication line is lower than the threshold value for a preset duration, and/or the voltage value on the first bus communication line is lower than the threshold value at least twice.
5. The method of claim 4, wherein the determining that the slave device does not correctly execute the communication command issued by the master device comprises:
and if the communication instruction execution result fed back by the slave equipment is inconsistent with the expected communication instruction execution result, judging that the slave equipment does not correctly execute the communication instruction issued by the master equipment.
6. The method of claim 5,
the master device is a network controller, and the slave device is a bus device.
7. A bus communication quality control system, comprising:
the voltage acquisition unit is used for acquiring a voltage value on the first bus communication line when the first bus communication line is the current bus communication line;
the circuit switching unit is used for switching the first bus communication circuit to a second bus communication circuit when the voltage value is lower than a threshold value, and the switched second bus communication circuit becomes a current bus communication circuit;
the first bus communication line and the second bus communication line are arranged in parallel between the master device and the slave device.
8. An air conditioning assembly, comprising:
the bus communication quality control system of claim 7; alternatively, the first and second electrodes may be,
the method is used for executing the bus communication quality control method of any one of claims 1 to 6.
9. An electronic device, comprising: a processor and a memory, wherein,
the memory is stored with a computer program which can be called by the processor;
the processor executes the bus communication quality control method according to any one of claims 1 to 6 by calling a computer program stored in the memory.
10. A computer-readable storage medium having stored thereon an erasable computer program;
when the computer program runs on computer equipment, the computer equipment is caused to execute the bus communication quality control method according to any one of claims 1 to 6.
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| CN114338264A (en) | 2022-04-12 |
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