CN110768695A - Transmission power configuration method, head end equipment, electrical system and chip - Google Patents
Transmission power configuration method, head end equipment, electrical system and chip Download PDFInfo
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Abstract
The invention discloses a transmitting power configuration method, head end equipment, an electric system and a chip, relates to the technical field of electricity, and aims to adaptively adjust the PLC communication transmitting power of an outdoor unit so that the PLC communication reliability of the outdoor unit and the indoor unit of an installed central air conditioner is not influenced by the communication distance. The configuration method comprises the following steps: the head end equipment determines the receiving error rate of the head end equipment to the m tail end equipment under the test of the transmitting power; updating the test transmitting power by the head end equipment under the condition that the bit error rate of the receiving of the head end equipment to at least one tail end equipment is larger than the bit error rate threshold value; the updated test transmit power is greater than the test transmit power before the update. The head-end equipment is used for executing the configuration method. The transmission power configuration method provided by the invention is used in an electric appliance system.
Description
Technical Field
The present invention relates to the electrical field, and in particular, to a transmission power configuration method, a head end device, an electrical system, and a chip.
Background
The central air conditioner is an air conditioner composed of an outdoor unit and a plurality of indoor units, and can realize air conditioning of a plurality of indoor spaces. And each indoor unit and each outdoor unit can realize data interaction by adopting power line carrier communication.
The power line carrier communication is also called PLC (Programmable Logic Controller, abbreviated as PLC) communication, and uses a power line as a transmission carrier of a communication message to load the communication message onto the power line, so that the power line can transmit a carrier signal, and data interaction between each indoor unit and each outdoor unit is realized. The communication mode can complete the data interaction between the indoor unit and the outdoor unit of the central air conditioner without a special communication line, has higher communication reliability, and can save the installation cost and the material cost of the central air conditioner. At present, the PLC transmitting power of an indoor unit and an outdoor unit of a central air conditioner is set before installation, so that the communication distance of PLC communication cannot meet the communication between the outdoor unit and the indoor unit under the condition that the distance between the outdoor unit and the indoor unit of the installed central air conditioner is relatively long.
Disclosure of Invention
The invention aims to provide a transmitting power configuration method, a head end device, an electrical system and a chip, which are used for adaptively adjusting the PLC communication transmitting power of an outdoor unit, so that the PLC communication reliability of the outdoor unit and the indoor unit of an installed central air conditioner is not influenced by the communication distance.
In order to achieve the above object, the present invention provides a transmission power configuration method applied to an electrical system having a head-end device and at least one tail-end device, the transmission power configuration method including:
the head end equipment determines the receiving error rate of the head end equipment to the m tail end equipment under the test transmitting power;
the head end equipment updates the test transmitting power under the condition that the head end equipment determines that the receiving error rate of the head end equipment to at least one tail end equipment is greater than the error rate threshold value; the updated test transmit power is greater than the test transmit power before the update.
Compared with the prior art, in the transmission power configuration method provided by the invention, the head end device determines the reception error rates of the head end device to the m tail end devices under the test transmission power, and under the condition that the reception error rate of the head end device to at least one tail end device is greater than or equal to the error rate threshold, the current test transmission power cannot meet the PLC communication requirements of the head end device and all tail end devices, the test transmission power is updated at the moment, so that the updated test transmission power is greater than the test transmission power before updating, the reception error rates of the head end device to the m tail end devices under the updated test transmission power are re-determined, and the test transmission power of the head end device is guided to meet the communication requirements of the head end device and all tail end devices, so that the PLC communication requirements of the head end device and all tail end devices can be ensured. Therefore, when the transmitting power configuration method provided by the invention is applied to the central air conditioner, the PLC communication transmitting power of the outdoor unit can be adjusted in a self-adaptive manner, so that the PLC communication reliability of the outdoor unit and the indoor unit of the installed central air conditioner is not influenced by the communication distance.
The invention also provides head end equipment which is applied to an electric appliance system with the tail end equipment, and the head end equipment comprises a processor;
the processor is used for determining the receiving error rate of the head-end equipment to the m tail-end equipment under the test transmitting power;
the processor is configured to update the test transmission power when determining that a reception error rate of the head-end device to at least one tail-end device is greater than or equal to an error rate threshold; the updated test transmit power is greater than the test transmit power before the update.
Compared with the prior art, the beneficial effects of the head-end equipment provided by the invention are the same as those of the transmission power configuration method, and are not described herein again.
The invention also provides an electrical system. The electrical system comprises a head end device and at least one tail end device; the head-end equipment is the head-end equipment in the technical scheme.
Compared with the prior art, the beneficial effects of the electric appliance system provided by the invention are the same as those of the transmission power configuration method, and are not described herein again.
The invention also provides a chip. The chip comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used for running a computer program or instructions to implement the transmission power configuration method in the technical scheme.
Compared with the prior art, the beneficial effects of the chip provided by the invention are the same as those of the transmission power configuration method, and are not described herein again.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is an architecture diagram of an electrical system provided by an embodiment of the present invention;
fig. 2 is a first flowchart of a transmit power configuration method according to an embodiment of the present invention;
fig. 3 is a second flowchart illustrating a transmit power configuration method according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a transmission power configuration method, taking an air conditioner as an example, according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a possible logic structure of a transmit power configuration apparatus according to an embodiment of the present invention;
fig. 6 is a schematic diagram of another possible logic structure of a transmit power configuration apparatus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a headend device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a chip according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Currently, communication modes of an outdoor unit and an indoor unit of a central air conditioner are classified into a wireless communication mode and a wired communication mode. The wireless communication mode can be WIFI, ZigBee and other communication modes. The wired communication mode can be a bus, a PLC communication mode and other communication modes.
When the outdoor unit and the indoor unit of the central air conditioner communicate in a wireless communication mode, wireless communication signals are easily shielded by walls, so that the communication signals are limited by wall penetration and the like. When the outdoor unit and the indoor unit of the central air conditioner communicate in a bus communication mode, if the outdoor unit and the indoor unit are connected by adopting special communication buses such as a HomeBus, a 485 bus, a CAN bus and the like, communication signals of the outdoor unit and the indoor unit are interacted through the buses. When the outdoor unit and the indoor unit communicate in a PLC communication mode, the outdoor unit and the indoor unit transmit communication signals through power lines, a special communication bus is not required, and installation cost and material cost can be effectively saved.
In order to support PLC communication, PLC communication modules are arranged in the outdoor unit and the indoor unit of the PLC communication. The communication distance of the PLC communication is determined by the wiring mode and the transmitting power of the PLC communication module. Under the same wiring environment, the higher the transmitting power of the PLC communication module is, the higher the success rate of PLC communication is. Accordingly, the better the reliability of PLC communication. However, the higher the transmission power of the PLC communication module is, not only the power consumption and temperature rise of the PLC communication module itself are higher, but also the electromagnetic interference (EMC) in the PLC communication process is higher. Therefore, in the PLC communication process, the transmitting power of the PLC communication module is not excessively high. In the related art, the PLC communication module generally includes a plurality of levels of transmission power for selection by a manufacturer of the central air conditioner. When a central air conditioner manufacturer produces a central air conditioner, the transmitting power of the PLC communication module is set in advance, so that the transmitting power of the PLC communication module of the central air conditioner after leaving a factory is constant.
Specifically, the inventors found that: the transmitting power of the PLC communication module determines the quality of PLC communication. In different test environments under experimental conditions, the default transmitting power of the PLC communication module sometimes cannot meet the PLC communication requirement, so that the networking and communication error rate of the outdoor unit and the indoor unit are not ideal. And the developer rewrites the default transmitting power of the PLC module through the external equipment, although the communication quality is obviously improved, the communication quality cannot be infinitely improved, otherwise, the power consumption and the temperature rise of the PLC communication module can be influenced, and the service life of the PLC communication module is adversely affected. And when the actual air conditioner is installed, the technical level of an installer limits, the installer cannot adjust the transmitting power of the PLC communication module, a large amount of training is needed even if corresponding tools are provided for the development of the PLC communication module, and the situation that the transmitting power is directly adjusted to the maximum on site for trouble saving is avoided.
The embodiment of the invention provides an electric appliance system. The electrical system includes a headend device and at least one backend device. The head end equipment is connected with at least one tail end equipment through a power line. It should be understood that the power lines may be used to power the headend device and the backend device, as well as to enable headend and backend device communication.
The electrical system can be any electrical system adopting PLC communication. The electrical system may be a distributed device such as a central air conditioner, or may be formed of at least two different devices. When the electrical system is a central air conditioner, the outdoor unit of the central air conditioner is used as a head end device, and the indoor unit is used as a tail end device. When the electrical system is formed by at least two different devices, the electrical system comprises a computer as a head end device and household appliances such as a television, a washing machine, an air conditioner and the like as tail end devices.
Fig. 1 is a diagram illustrating an architecture of an electrical system according to an embodiment of the present invention. As shown in fig. 1, the electrical system includes a head end device 100 and a tail end device 200. The head-end device 100 and the tail-end device 200 are connected by a power line 300. It should be understood that only one end device is shown in fig. 1, but that multiple end devices may be provided.
The headend device 100 includes a first main control chip 110 and a first PLC communication module 120. The first main control chip 110 and the first PLC communication module 120 may use a UART (Universal Asynchronous Receiver/Transmitter, abbreviated as UART) interface for communication. The tail end device 200 includes a second main control chip 210 and a second PLC communication module 220. The second main control chip 210 and the second PLC communication module 220 may communicate with each other by using a bus such as UART (universal asynchronous Receiver/Transmitter). The first PLC communication module 120 and the second PLC communication module 220 implement communication through the power line 300.
For convenience of display, the head end device further includes a display module 130 electrically connected to the first main control chip 110. The display module 130 may display the content provided by the first main control chip 110.
In order to control the tail end device conveniently, the electrical system further comprises a wire controller 400. The line controller 400 and the second main control chip 210 communicate with each other by using a HomeBus, a 485 bus, a CAN bus, and the like, so as to control the tail end device.
Embodiments of the present invention provide a transmission power configuration method, which can adaptively adjust transmission power, so that PLC communication reliability of a head-end device and a tail-end device is relatively high. The transmission power configuration method can be executed by the head-end device independently or cooperatively by the tail-end device. The steps performed by the headend device may also be performed by a chip applied in the headend device. The following describes a transmission power configuration method provided by an embodiment of the present invention with a head-end device as an implementation subject.
The transmission power configuration method provided by the embodiment of the invention is applied to an electric appliance system with a head end device and m tail end devices, wherein m is an integer greater than or equal to 1. The head end equipment and the tail end equipment are provided with PLC communication modules. As shown in fig. 2, the transmit power configuration method includes:
step 102: and the head-end equipment determines the receiving error rate of the head-end equipment to the m tail-end equipment under the test of the transmitting power.
When the head-end device determines that the reception error rate of the head-end device to at least one tail-end device is greater than or equal to the error rate threshold, it indicates that the test transmission power of the head-end device is not high enough to meet the communication requirements of the head-end device and all tail-end devices, and then step 104 is executed.
When the head-end device determines that the bit error rates of the reception of the m tail-end devices by the head-end device are all less than or equal to the bit error rate threshold, it indicates that the test transmission power of the head-end device can meet the communication requirements of the head-end device and all the tail-end devices, and step 105 is executed.
Step 104: and updating the test transmitting power. In practical application, when the head-end device determines that the bit error rate of the head-end device to at least one tail-end device is greater than the bit error rate threshold, it indicates that the test transmission power of the head-end device is not high enough to meet the communication requirements of the head-end device and all tail-end devices, and therefore, the updated test transmission power is greater than the test transmission power before updating.
Step 105: and completing the transmission power configuration and turning to a normal mode.
In an actual application scenario, the bit error rate threshold may be a fixed value or may be an interval. Illustratively, the bit error rate threshold is 2% to 5%. Taking an electrical device as an example of a central air conditioner, the central air conditioner has an outdoor unit as a head end device, and also has two indoor units as the head end device, namely a first indoor unit and a second indoor unit. The threshold value of the error rate is 2%, when the outdoor unit determines that the error rate of receiving the signal of the outdoor unit to the first indoor unit is 0.5% under the transmission power of level 1, and determines that the error rate of receiving the signal of the outdoor unit to the second indoor unit is 3% under the transmission power of level 1, the outdoor unit determines that the error rate of receiving the signal of the outdoor unit to the second indoor unit is more than 2%. In this case, it will be described that the outdoor unit sets the transmission power of the outdoor unit to the level 2 transmission power, because the level 1 transmission power can satisfy the PLC communication requirements of the outdoor unit and the first indoor unit, but cannot satisfy the PLC communication requirements of the outdoor unit and the second indoor unit. And the outdoor unit determines the receiving error rate of the outdoor unit to the first indoor unit and the second indoor unit under the 2-level transmitting power, confirms the relation between the receiving error rate and 2 percent, and further determines whether to adjust the 2-level transmitting power to the 3-level transmitting power. And circulating the steps until the outdoor unit determines that the receiving error rates of the outdoor unit to the first indoor unit and the second indoor unit are less than 2% under a certain level of transmitting power, completing transmitting power configuration and completing transmitting power configuration.
As can be seen from the process of the transmission power configuration method provided in the foregoing embodiment, the head end device determines the reception error rates of the head end device to the m tail end devices under the test transmission power, and indicates that the current test transmission power cannot meet the PLC communication requirements of the head end device and all tail end devices under the condition that the reception error rate of the head end device to at least one tail end device is greater than the error rate threshold, at this time, the test transmission power is updated, so that the updated test transmission power is greater than the test transmission power before updating, so as to re-determine the reception error rates of the head end device to the m tail end devices under the updated test transmission power, and instruct the test transmission power of the head end device to meet the communication requirements of the head end device and all tail end devices, so that the PLC communication requirements of the head end device and all tail end devices can. Therefore, when the transmission power configuration method provided by the embodiment of the invention is applied to the central air conditioner, the PLC communication transmission power of the outdoor unit can be adjusted in a self-adaptive manner, so that the PLC communication reliability of the outdoor unit and the indoor unit of the installed central air conditioner is not influenced by the communication distance. When an installer installs electrical systems such as a central air conditioner, the head-end equipment included in the electrical systems such as the central air conditioner can automatically configure the transmitting power only by starting the dial switch, and the configured transmitting function can ensure that the electrical systems meet the PLC communication requirements of the head-end equipment and the m tail-end equipment on the basis of the lowest power consumption and temperature rise of the head-end equipment. In addition, the error rate of receiving the signal of the head end equipment to m tail end equipment under the test of the transmitting power is taken as a judgment standard, so that the transmitting power of the head end equipment is lower as much as possible on the premise that the head end equipment meets the reliable communication with all the tail end equipment, and the power consumption and the temperature rise of the head end equipment are reduced.
In the related art, the transmission power of the PLC communication module may be adjusted based on the signal-to-noise ratio of the carrier signal transmitted by the power line, but the signal-to-noise ratio before the central air conditioner is powered on needs to be obtained, and the transmission power of the PLC communication module is determined when the signal-to-noise ratio before the central air conditioner is powered on is qualified. This not only needs the manual work to obtain the signal-to-noise ratio through the peripheral hardware, and under the structure (tree type or string type) in different network deployment frameworks, the requirement to the signal-to-noise ratio is different, therefore, under the condition that the signal-to-noise ratio is qualified before the central air conditioner is electrified, the PLC communication module transmitting power that is confirmed also can not directly represent that the PLC communication is qualified. The transmission power configuration method provided by the embodiment of the invention takes the bit error rate of the head end equipment to the m tail end equipment as an evaluation index to configure the transmission function. The receiving error rate can visually reflect the PLC communication reliability of the head end equipment and each tail end equipment, so that the transmitting power configuration method provided by the embodiment of the invention can ensure that the PLC communication of the head end equipment and m tail end equipment is qualified.
As a possible implementation manner, as shown in fig. 2, in order to ensure that a head-end device determines the error rate of the reception of m tail-end devices by the head-end device under a test transmission power, and the head-end device determines the error rate of the reception of m tail-end devices by the head-end device under the test transmission power, the transmission power configuration method includes:
step S101: determining that the head-end device is in a networking state. In an application scenario, after an electric system is powered on, the head end equipment is set to be in a networking mode, and test transmitting power is set. And waiting for 30s to realize the networking of the head-end module and the m tail-end devices during the waiting period, so that the head-end device is in a networking state. It should be understood that after the head-end module is networked with the m tail-end devices, the m tail-end devices are also in a networking state.
As a possible implementation manner, as shown in fig. 2, before updating the test transmission power when the head-end device determines that the reception error rate of the head-end device to at least one tail-end device is greater than or equal to the error rate threshold, the method for configuring the transmission power further includes:
step 103: and determining that the test transmitting power before updating is smaller than the transmitting power threshold value. The transmission power threshold value can be adjusted according to actual conditions.
For example: the transmitting power of the PLC communication module included in the head-end equipment is divided into 24 grades, and the higher the grade is, the higher the transmitting power is. In the related art, the PLC communication module included in the headend device is already set before the power generator system comes into production. The transmission power threshold is 24 levels of transmission power in the embodiment of the invention. If the head-end equipment determines that the test transmission power before updating is 23-level transmission power, it indicates that the test transmission power before updating is smaller than the transmission power threshold, and there is room for updating the test transmission power. If the head-end equipment determines that the test transmission power before updating is 24-level transmission power, it indicates that the test transmission power before updating is equal to the transmission power threshold, and there is no room for updating the test transmission power. At this time, the PLC communication module of the head-end device needs to be replaced to ensure normal adaptive adjustment of the transmission power.
It should be noted that the above-mentioned transmission power configuration only needs to be performed once when the electrical system is installed, and when the electrical system is powered on again after the transmission power configuration is completed, the electrical system can directly perform a normal operation mode.
As a possible implementation manner, as shown in fig. 3, the determining, by the head-end device, the ber of the m tail-end devices by the head-end device under the test transmission power includes:
step 1021: and the head-end equipment intermittently sends test messages to the m tail-end equipment according to the test transmitting power. For example: the headend device may randomly generate a string of numbers, which is defined as a random number broadcast command.
For example, the time interval between two adjacent times of sending the test message to each of the tail end devices by the head end device may be set according to actual conditions, and as long as sufficient time is reserved for the head end device to receive the test message returned by all the tail end devices on the premise that it is ensured that the head end device and all the tail end devices can send messages to each other before sending the test message to each of the tail end devices.
The step 1021 includes: the head end equipment sends test messages to each tail end equipment intermittently at intervals of 1-5 s according to the test transmitting power, and the test messages sent twice adjacently are guaranteed not to be interfered when being returned.
In practical application, after the head-end device sends the test message to the m tail-end devices, the head-end device may receive the current test message returned by the tail-end device, and may not receive the current test message returned by the tail-end device. That is, there may be test messages that are returned by k tail-end devices and are not received by r tail-end devices. Where k + r is m, and k and r are integers less than or equal to m.
When k is m and r is 0, the head-end device receives the test messages returned by all tail-end devices. When r is m and r is 0, the head-end device does not receive all tail-end devices and does not return test messages. When m is an integer greater than or equal to 2 and r and k are both integers greater than or equal to 1, the head-end device receives the test message returned by one part of the m tail-end devices, and does not receive the test message returned by the other part of the tail-end devices. It can be seen that there are two possibilities for the head-end device to be echoed and not echoed for each tail-end device. And for the echoed tail-end device, the test message echoed by the tail-end device should theoretically be the same as the test message sent by the head-end device. However, the test messages returned by the tail-end device may be different from the test messages sent by the head-end device for various reasons. Based on this, in
After step 1021, the determining, by the head end device, the reception error rate of the head end device to the m tail end devices under the test transmission power further includes:
step 1022: and under the condition that the head end equipment receives the test message returned by the tail end equipment each time, determining the accumulated error code times of the tail end equipment according to the test message returned by the tail end equipment. In practical applications, if the test message sent by the head-end device is 01001000 and the test message returned by the tail-end device is 01100010, it indicates that the head-end device has a reception error for the tail-end device returning the error test message. At this time, the accumulated error number of the tail end equipment returning the error test message is added with 1.
The accumulated error code times refers to the total times of the receiving errors of the test message returned by the tail-end device when the head-end device starts to receive the test message returned by the tail-end device from the 1 st time to the current time when the head-end device receives the test message returned by the tail-end device. Based on the characteristic, when the head-end device determines the accumulated error code times of the tail-end device according to the test message returned by the tail-end device, the head-end device should identify the address information of the tail-end device. And under the condition that the test message returned by the tail-end equipment is wrong, searching the accumulated error code times of the tail-end equipment consistent with the address information of the tail-end equipment from the cache according to the address information of the tail-end equipment, and adding 1 to the accumulated error code times. Under the condition that the test message returned by the tail-end equipment is correct, the accumulated error code frequency can not change, so that the accumulated error code frequency of the tail-end equipment consistent with the address information of the tail-end equipment does not need to be searched from a cache according to the address information of the tail-end equipment, and the accumulated error code frequency is added with 1. Of course, it may also be considered that, under the condition that the test message returned by the tail-end device is correct, the accumulated error code frequency of the tail-end device consistent with the address information of the tail-end device is searched from the cache according to the address information of the tail-end device, and 0 is added to the accumulated error code frequency.
Step 1023: and under the condition that the head-end equipment does not receive the test message returned by the tail-end equipment each time, determining the accumulated unreceived times of the tail-end equipment.
In practical application, if the tail-end device returns the test message, it indicates that the head-end device has a reception error code for the tail-end device returning the wrong test message. At this time, 1 is added to the cumulative number of unreceived messages of the tail end device. It should be understood that the cumulative number of times of non-reply refers to the total number of times that the test message returned by the tail-end device is not returned by the tail-end device from the time the test message returned by the tail-end device is not received by the head-end device at the 1 st time to the time the test message returned by the tail-end device is not received by the head-end device at the current time. Based on the characteristics, when the head-end device determines the accumulated unreceived times of the tail-end device according to the test message returned by the tail-end device, if the head-end device has received some test messages returned by the tail-end device, the address information of all tail-end devices can be retrieved from the cache, and the address information of the tail-end device which does not receive the returned test message is screened out from the address information of all tail-end devices according to the address information of the tail-end device which receives the returned test message; and searching the accumulated times of unreturned information of the address information of the tail end equipment from a cache according to the screened address information of the tail end equipment, and adding 1 to the accumulated times of unreturned information.
Step 1025: and the head end equipment determines the reception error rate of the head end equipment to the m tail end equipment according to the accumulated error times and the accumulated unreturned information times of the m tail end equipment.
For example: defining the cumulative error rate of the same tail-end device as N1, the cumulative unreturned information as N2, and the total number of test messages sent by the head-end device as N, so that the reception error rate SER is (N1+ N2)/N. It should be understood that when the transmission number threshold is a fixed value, the total number of test messages transmitted by the head-end equipment is equal to the transmission number threshold.
For example, as shown in fig. 3, before the head-end device sends a test message to m tail-end devices each time according to a test transmission power, the transmission power configuration method further includes:
step 1020: the head-end device determines that the number of times of sending the test message to the m tail-end devices according to the test transmission power is less than the sending number threshold, and then step 1021 is executed.
In practical applications, the threshold of the number of transmissions may be set according to practical situations. The threshold value of the number of transmissions is 100 to 200. For example: when the threshold of the sending times is 100 times, if the head end device determines that the number of times of sending the test message to the m tail end devices according to the test transmission power is 99 times, step 1021 is executed.
For example, as shown in fig. 3, after the head-end device intermittently sends the test message to the m tail-end devices according to the test transmission power, before the head-end device determines the reception error rates of the head-end device to the m tail-end devices according to the accumulated error times and the accumulated unreturned information times of the m tail-end devices, the transmission power configuration method further includes:
step 1024: and the head-end equipment determines that the number of times of sending the test messages to the m tail-end equipment according to the test transmitting power is equal to the sending number threshold. At which point step 1025 is performed.
In practical applications, the threshold of the number of transmissions may be set according to practical situations. The threshold value of the number of transmissions is 100 to 200. For example: when the threshold of the sending times is 100 times, if the head-end device determines that the number of times of sending the test message to the m tail-end devices according to the test transmission power is 100 times, step 1025 is executed.
The following describes a networking process of an electrical system provided in an embodiment of the present invention with reference to fig. 4 by taking a central air conditioner as an example, and the following description is only for purposes of illustration and not limitation. It should be understood that the outdoor units are head-end units and the indoor units are tail-end units. For convenience of description, the following description will be given by taking 1 indoor unit as an example, but the present invention may be extended to 2 or more indoor units. The outdoor unit and the indoor unit are both provided with PLC communication modules, the transmitting power is divided into 24 grades, and the transmitting power has 24 grades of transmitting frequency.
Step 201: in case that the central air conditioner is powered on, the outdoor unit determines whether to start a networking mode of the central air conditioner.
If the outdoor unit determines that the networking mode of the central air conditioner is not started, executing step 202; if the outdoor unit determines to start the networking mode of the central air conditioner, step 203 is executed.
Step 202: the outdoor unit is started in a normal mode.
Step 203: the outdoor unit starts a networking mode, and the transmitting power of a PLC communication module of the outdoor unit is set to be level 1. It should be understood that the transmit power of the PLC of the indoor unit is generally set to the maximum transmit power and is not specifically configured.
Step 204: and waiting for 30s to realize the networking of the outdoor unit and the indoor unit.
Step 205: the outdoor unit transmits a random number broadcast message.
Step 206: and the outdoor unit determines the accumulated error code times and the accumulated unreinforced times of the indoor unit.
Step 207: the outdoor unit determines whether the number of broadcasts is less than 100. If so, step 205 is performed, otherwise step 208 is performed.
Step 208: and the outdoor unit obtains the receiving error rate of the outdoor unit to the indoor unit according to the accumulated error code times and the accumulated unreceived times of the indoor unit and the total number of the test messages sent by the outdoor unit to the indoor unit.
Step 209: and judging whether the receiving error rate of the outdoor unit to the indoor unit is less than or equal to 2%.
If so, step 202 is performed, otherwise step 210 is performed.
Step 210: the outdoor unit determines whether the transmitting power of the PLC communication module is less than 24-level transmitting power.
If so, it indicates that there is room for increasing the transmission power of the PLC communication module, and step 211 is executed. Otherwise, it indicates that the PLC communication module cannot meet the current requirement, and step 212 needs to be executed. It should be understood that, at the 1 st cycle, since the transmission power of the PLC communication module is level 1, the transmission power of the PLC communication module is necessarily less than the maximum transmission power.
Step 211: the outdoor unit updates the transmitting power of the PLC communication module to be improved by level 1, and step 204 is executed.
Step 212: and replacing the PLC communication module of the outdoor unit. To determine whether the loop from step 204 to step 210 is complete.
Therefore, the transmission power configuration method provided by the embodiment of the invention can determine whether the current transmission power is qualified according to the receiving condition of the outdoor unit (namely, the upper computer), and is more intuitive and effective. And the self-adaptive capacity of the scheme is strong, and the transmitting power supported by the PLC communication module can be polled theoretically until the most appropriate generating power is found out.
The above describes aspects of embodiments of the invention primarily from the perspective of a head-end device. It will be appreciated that the headend equipment, in order to perform the above-described functions, includes corresponding hardware structures and/or software modules that perform the respective functions. Those of skill in the art would readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The embodiment of the present invention may perform the division of the functional units according to the method described above, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated in one processing unit 201. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
The method of the embodiment of the present invention is described above with reference to fig. 2 to 4, and the following describes an apparatus for performing the transmit power configuration method of the above method according to the embodiment of the present invention. Those skilled in the art will appreciate that the methods and apparatuses may be combined with each other and that embodiments of the present invention provide a transmission power configuration apparatus that may perform the steps performed by the head-end device in the transmission power configuration method described above.
In the case of using an integrated unit, fig. 5 shows a schematic structural diagram of the transmission power configuration apparatus 200 according to the above embodiment, where the transmission power configuration apparatus 200 may be a head end device, or a terminal of the head end device, or a chip applied to the head end device or the terminal of the head end device. The communication device includes: a processing unit 201.
As shown in fig. 5, the processing unit 201 is configured to enable the head-end device to perform step 102, step 103, step 105, and step 106, which are performed by the head-end device in the foregoing embodiment.
As a possible implementation manner, as shown in fig. 5, the processing unit 201 is further configured to enable the head-end device to perform step S101 and step S104 performed by the head-end device in the foregoing embodiment.
As a possible implementation manner, as shown in fig. 5, the processing unit 201 is specifically configured to enable the head-end device to perform step 1022, step 1023, and step 1025, which are performed by the head-end device in the foregoing embodiment.
As shown in fig. 5, the apparatus 200 for configuring transmission power further includes a communication unit 202, configured to enable the headend device to perform step 1021 performed by the headend device in the above embodiment.
Illustratively, as shown in fig. 5, the processing unit 201 is configured to support the head-end device to perform steps 1020 and 1024, which are performed by the head-end device in the foregoing embodiment.
Fig. 6 shows another possible logical structure diagram of the transmission power configuration apparatus 200 involved in the above embodiment, in the case of using an integrated unit. The transmission power configuration apparatus 200 includes: a processing module 211. The processing module 211 is configured to enable the head-end device to perform step 102, step 103, step 105, and step 106 performed by the head-end device in the above embodiments.
In a possible embodiment, as shown in fig. 6, the transmission power configuration apparatus 200 may further include a storage module 213 for storing program codes and data for executing the functions of the transmission power configuration apparatus 200.
In a possible implementation manner, as shown in fig. 6, the processing module 211 is further configured to enable the head-end device to perform step S101 and step S104 performed by the head-end device in the foregoing embodiment.
As a possible implementation manner, as shown in fig. 6, the processing module 211 is specifically configured to enable the head-end device to perform step 1022, step 1023, and step 1025, which are performed by the head-end device in the foregoing embodiment.
As shown in fig. 6, the apparatus 200 for configuring transmission power further includes a communication module 212, configured to enable the headend device to perform step 1021 performed by the headend device in the above embodiment.
Illustratively, as shown in fig. 6, the processing module 211 is configured to enable the headend device to perform steps 1020 and 1024 that are performed by the headend device in the above embodiment.
As shown in fig. 6, the processing module 211 may be a processor or a controller, such as a central processing unit, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., a combination of one or more microprocessors, a digital signal processor and a microprocessor, or the like. The communication module 212 may be a communication interface or the like. The storage module 213 may be a memory.
When the processing module 211 shown in fig. 6 is the processor 111 or the processor 112, the communication module 212 is the communication interface 113, and the storage module 213 is the memory 115, the transmission power configuration apparatus 200 according to the present invention may be the headend device shown in fig. 7.
As shown in fig. 7, an embodiment of the present invention further provides a head-end device applied to an electrical system having a tail-end device, where the head-end device includes a processor 111. The processor 111 may be a general-purpose Central Processing Unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more ics for controlling the execution of programs in accordance with the present disclosure.
As shown in fig. 7, the processor 111 is configured to enable the headend device to perform step 102 performed by the headend device in the above embodiment.
As shown in fig. 7, the processor 111 is further configured to enable the headend device to perform step 103 performed by the headend device in the above embodiment.
As a possible implementation manner, as shown in fig. 7, the processor 111 is further configured to enable the head-end device to perform step 105 and step 106, which are performed by the head-end device in the foregoing embodiment.
As a possible implementation manner, as shown in fig. 7, the processor 111 is further configured to enable the head-end device to perform step S101 and step S104 performed by the head-end device in the foregoing embodiment.
As a possible implementation manner, as shown in fig. 7, the headend device 100 further includes a communication interface 113. A PLC transceiver or the like is used for communication with other devices or a communication network.
As shown in fig. 7, the communication interface 113 is used to support the headend device to perform step 1021 executed by the headend device in the above embodiment.
As shown in fig. 7, in the case that the communication interface 113 is used to support the head-end device to perform step 1021 performed by the head-end device in the above embodiment, the processor 111 is further used to support the head-end device to perform step 1022, step 1023 and step 1025 performed by the head-end device in the above embodiment.
Illustratively, as shown in fig. 7, the communication interface 113 is configured to enable the head-end device to perform step 1020 executed by the head-end device in the above embodiment before sending the test message to m tail-end devices each time according to the test transmission power.
Illustratively, as shown in fig. 7, the communication interface 113 is configured to send a test message to m tail-end devices each time according to a test transmission power, the processor 111 is further configured to support the head-end device to perform step 1025 executed by the head-end device in the above embodiment, the communication interface 113 is configured to send a test message to m tail-end devices each time according to the test transmission power, and the processor 111 is further configured to support the head-end device to perform step 1024 executed by the head-end device in the above embodiment.
Exemplarily, as shown in fig. 7, the communication interface 113 is specifically configured to send a test message to m tail end devices every 1s to 5s according to the test transmission power.
Illustratively, as shown in fig. 7, the headend device 100 further includes a communication line 114. The communication interface and the processor may be connected by a communication line, which includes a path.
As a possible implementation manner, as shown in fig. 7, the headend device 100 further includes a memory 115. The memory 115 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disc storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory 115 may be separate and coupled to the processor 111 via the communication link 114. The memory 115 may also be integrated with the processor 111.
As shown in fig. 7, the memory 115 is used for storing computer-executable instructions for implementing the present invention, and is controlled by the processor. The processor 111 is configured to execute computer-executable instructions stored in the memory, thereby implementing the transmit power configuration method provided by the above-described embodiments of the present invention.
Optionally, the computer-executable instructions in the embodiment of the present invention may also be referred to as application program codes, which is not specifically limited in this embodiment of the present invention.
In particular implementations, as one embodiment, processor 111 may include one or more CPUs, such as CPU0 and CPU1 in fig. 7, as shown in fig. 7.
In one embodiment, as shown in fig. 7, the headend apparatus 100 may include a plurality of processors, such as the processor 111 and the processor 112 in fig. 7. Each of these processors may be a single core processor or a multi-core processor.
Fig. 8 is a schematic structural diagram of a chip 120 according to an embodiment of the present invention. The chip 120 includes one or more (including two) processors 121 and a communication interface 122.
Optionally, the chip 120 further includes a memory 123, and the memory 123 may include a read-only memory and a random access memory, and provides operating instructions and data to the processor. The portion of memory may also include non-volatile random access memory (NVRAM).
In some embodiments, as shown in FIG. 8, memory 123 stores elements, execution modules or data structures, or a subset thereof, or an expanded set thereof.
As shown in fig. 8, in the embodiment of the present application, by calling an operation instruction stored in the memory 123 (the operation instruction may be stored in an operating system), a corresponding operation is performed.
As shown in fig. 8, a processor 121, which may also be referred to as a Central Processing Unit (CPU), controls the processing operations of the head-end device.
As shown in fig. 8, the memory 123 may include a read-only memory and a random access memory, and provides instructions and data to the processor. A portion of the memory 123 may also include NVRAM. For example, the application communication interface and the memory are coupled together by a bus system 124, wherein the bus system 124 may include a power bus, a control bus, a status signal bus, etc., in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 124 in fig. 8.
The method disclosed by the embodiment of the invention can be applied to a processor or realized by the processor. The processor may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an ASIC, an FPGA (field-programmable gate array) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.
The embodiment of the present invention further provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed, the transmit power configuration method provided in the foregoing embodiment is implemented.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a terminal, a user device, or other programmable apparatus. The computer program or instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer program or instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire or wirelessly. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that integrates one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; or optical media such as Digital Video Disks (DVDs); it may also be a semiconductor medium, such as a Solid State Drive (SSD).
While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.
Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include such modifications and variations.
Claims (10)
1. A transmission power configuration method is characterized by being applied to an electric system with a head-end device and at least one tail-end device; the transmission power configuration method comprises the following steps:
the head end equipment determines the receiving error rate of the head end equipment to the m tail end equipment under the test transmitting power;
the head end equipment updates the test transmitting power under the condition that the head end equipment determines that the receiving error rate of the head end equipment to at least one tail end equipment is greater than the error rate threshold value; the updated test transmit power is greater than the test transmit power before the update.
2. The method of claim 1, wherein the determining, by the head-end device, the bit error rates of the m tail-end devices at the test transmission power by the head-end device comprises:
the head-end equipment intermittently sends test messages to the m tail-end equipment according to the test transmitting power;
under the condition that the head-end equipment receives the test message returned by the tail-end equipment each time, determining the accumulated error code times of the tail-end equipment according to the test message returned by the tail-end equipment; determining the accumulated unreceived times of the tail-end equipment under the condition that the head-end equipment does not receive the test message returned by the tail-end equipment each time;
and the head-end equipment determines the reception error rate of the head-end equipment to the m tail-end equipment according to the accumulated error code times and the accumulated unreturned information times of the m tail-end equipment.
3. The transmission power configuration method according to claim 2,
before the head-end device sends a test message to m tail-end devices each time according to the test transmission power, the transmission power configuration method further includes:
the head-end equipment determines that the number of times of sending the test messages to the m tail-end equipment according to the test transmitting power is less than a sending number threshold;
after the head-end device sends a test message to the m tail-end devices each time according to the test transmission power, before the head-end device determines the reception error rates of the head-end device to the m tail-end devices according to the accumulated error times and the accumulated non-returned information times of the m tail-end devices, the transmission power configuration method further includes:
the head-end equipment determines that the number of times of sending the test messages to the m tail-end equipment according to the test transmitting power is equal to a sending number threshold;
and/or the presence of a gas in the gas,
the head-end device intermittently sending test messages to the m tail-end devices according to the test transmission power includes:
and the head end equipment sends test messages to the m tail end equipment every 1 s-5 s according to the test transmitting power.
4. The method for configuring transmission power according to claim 1, wherein the head-end device determines the ber of the m tail-end devices at the tested transmission power, and the method further comprises:
determining that the head-end device is in a networking state;
and/or the presence of a gas in the gas,
when the head-end device determines that a reception error rate of the head-end device to at least one tail-end device is greater than or equal to an error rate threshold, before updating the test transmission power, the transmission power configuration method further includes:
and determining that the test transmitting power before updating is smaller than the transmitting power threshold value.
5. A headend device for an electrical system having a backend device, the headend device comprising a processor;
the processor is used for determining the receiving error rate of the head-end equipment to the m tail-end equipment under the test transmitting power;
the processor is further configured to update the test transmission power when it is determined that a reception error rate of the head-end device to at least one tail-end device is greater than or equal to an error rate threshold; the updated test transmit power is greater than the test transmit power before the update.
6. The headend device of claim 5, further comprising a communication interface configured to intermittently send test messages to m of the tail end devices according to the test transmit power;
the communication interface is further configured to, in a case where a test message returned by the tail end device is received each time, determine, by the processor, the number of accumulated error codes of the tail end device according to the test message returned by the tail end device; determining the accumulated unreceived times of the tail-end equipment under the condition that the test message returned by the tail-end equipment is not received each time; and determining the receiving error rate of the head-end equipment to the m tail-end equipment according to the accumulated error code times and the accumulated unreturned information times of the m tail-end equipment.
7. The headend device of claim 6, wherein the communication interface is configured to determine that a number of times test messages are sent to m of the tail end devices according to the test transmit power is less than a send number threshold before sending test messages to m of the tail end devices each time according to the test transmit power;
the communication interface is used for sending a test message to m tail-end devices each time according to the test transmitting power, the processor is used before the head-end device determines the receiving error rate of the head-end device to the m tail-end devices according to the accumulated error times and the accumulated unreturned information times of the m tail-end devices, and the processor is also used for determining that the number of times of sending the test message to the m tail-end devices according to the test transmitting power is equal to a sending number threshold;
and/or the presence of a gas in the gas,
the communication interface is specifically configured to send a test message to m pieces of the tail end device every 1s to 5s according to the test transmission power.
8. The headend device of claim 5, wherein the processor is further configured to determine that the headend device is in a networking state before determining the bit error rates of the headend device for the m tail end devices under the test transmit power;
and/or the presence of a gas in the gas,
the processor is further configured to determine that the test transmission power before updating is smaller than the transmission power threshold before updating the test transmission power when it is determined that a reception error rate of the head-end device to the at least one tail-end device is greater than or equal to an error rate threshold.
9. An electrical system comprising a head end device and at least one tail end device; the head end equipment is connected with at least one tail end equipment through a power line; the head-end equipment is the head-end equipment of any one of claims 5 to 8.
10. A chip comprising a processor and a communication interface coupled to the processor, the processor being configured to execute a computer program or instructions to implement the transmit power configuration method of any of claims 1-4.
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