CN109194553B - Remote control method and system with adjustable control frequency for intelligent household appliance - Google Patents
Remote control method and system with adjustable control frequency for intelligent household appliance Download PDFInfo
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- CN109194553B CN109194553B CN201811066179.5A CN201811066179A CN109194553B CN 109194553 B CN109194553 B CN 109194553B CN 201811066179 A CN201811066179 A CN 201811066179A CN 109194553 B CN109194553 B CN 109194553B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
- H04L12/2816—Controlling appliance services of a home automation network by calling their functionalities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/188—Time-out mechanisms
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
- H04L12/2816—Controlling appliance services of a home automation network by calling their functionalities
- H04L12/282—Controlling appliance services of a home automation network by calling their functionalities based on user interaction within the home
Abstract
The invention provides a remote control method and a system with adjustable control frequency for intelligent household appliances, wherein the method comprises the following steps: receiving a household appliance control command by an intelligent household appliance control center; in response to receiving the household appliance control command, analyzing the household appliance control command to obtain the data length of the household appliance control command; setting a retransmission timer based on the data length; after the retransmission timer is set, forwarding a household appliance control command to the intelligent household appliance, and starting to retransmit the timer; judging whether a control command reception confirmation message or a control command reception negative confirmation message is received before the retransmission timer is overtime; respectively executing specified operations according to whether a control command receiving confirmation message is received before the retransmission timer is overtime; and if the control command reception negative acknowledgement message is received before the retransmission timer times out, zeroing the retransmission timer and retransmitting the appliance control command to the intelligent appliance.
Description
Technical Field
The invention relates to the technical field of intelligent household appliance control, in particular to a remote control method and a remote control system for intelligent household appliances with adjustable control frequency.
Background
The future intelligent household appliance system has the following development trends: (1) remote control: by utilizing the existing network technology such as the internet, the 3G network and the wireless sensor network technology, the working state of the household electrical appliances can be checked through a remote computer, an intelligent terminal and the like, and the household electrical appliances can be operated. For example, in hot summer, the temperature adjusting device at home can be remotely controlled through the remote control terminal before people come home from work, the device is started and set in advance, and people can enjoy cool indoor environment after coming home. (2) Networking and integrating household appliances: the user can spend less money and enjoy more new functions. The prior household appliances have independent controllers, for example, people sit in a home with an air conditioner and watch movies by using a DVD, and although the air conditioner, the television and the DVD have respective remote controllers, people can sit on a sofa to control the air conditioner, the television and the DVD easily, but the three remote controllers obviously increase the total cost and bring inconvenience to use. The intelligent terminal is used for trying to complete the operation of all household appliances and easily acquiring information such as temperature, humidity and illumination of all corners in a house, an operation scheme meeting the requirement of the intelligent terminal is formulated, the intelligent terminal automatically controls and coordinates the work of the household appliances, and the requirement of the intelligent terminal on the family environment is met. (3) Remote maintenance: the household appliance can automatically diagnose fault information and feed back the fault information to a designated monitoring computer through a remote network, and the computer carries out remote detection on the fault information.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a remote control method and a remote control system for intelligent household appliances, which can overcome the defects of the prior art.
In order to achieve the above object, the present invention provides a remote control method with adjustable control frequency for an intelligent household appliance, comprising the following steps: receiving a household appliance control command by an intelligent household appliance control center, wherein the household appliance control command is sent by a mobile control terminal; in response to receiving the household appliance control command, the intelligent household appliance control center analyzes the household appliance control command to obtain the data length of the household appliance control command; setting, by the intelligent appliance control center, a retransmission timer based on the data length of the appliance control command, wherein setting the retransmission timer comprises setting an timeout duration of the retransmission timer; after setting the retransmission timer, forwarding a household appliance control command to the intelligent household appliance by the intelligent household appliance control center, and starting to retransmit the timer; judging whether a control command receiving confirmation message or a control command receiving negative confirmation message is received before the retransmission timer is overtime by the intelligent household appliance control center; if the control command reception confirmation message is received before the retransmission timer times out, resetting the timeout duration of the retransmission timer and zeroing the retransmission timer; if the control command receiving confirmation message is not received before the retransmission timer is overtime, the retransmission timer is reset to zero, and the household appliance control command is retransmitted to the intelligent household appliance; and if the control command reception negative acknowledgement message is received before the retransmission timer times out, zeroing the retransmission timer and retransmitting the appliance control command to the intelligent appliance.
In a preferred embodiment, wherein the control command reception acknowledgement message is sent by the intelligent appliance in response to receiving the control command, and wherein the control command reception negative acknowledgement message is sent by the intelligent appliance in response to receiving the control command that cannot be correctly interpreted.
In a preferred embodiment, the setting of the retransmission timer based on the data length of the appliance control command specifically includes the following steps: estimating the response delay time t based on the data length of the household appliance control commandaWherein the reaction is delayed by a time taThe time length is from the moment when the intelligent household appliance control center forwards the household appliance control command to the intelligent household appliance to the moment when the intelligent household appliance sends a control command receiving confirmation message or a control command receiving negative confirmation message to the intelligent household appliance control center; estimating the transmission delay time t of a control command reception acknowledgement message or a control command reception negative acknowledgement messageb(ii) a Setting the timeout period T of the retransmission timer so that T ═ Ta+tb+ts(ii) a Wherein, tsIs a guard period.
In a preferred embodiment, the estimating of the response delay time based on the data length of the appliance control command includes the steps of: establishing an allowed control command set by an intelligent household appliance control center; sequencing the control commands in the allowed control command set according to the control command length in the allowed control command set; grouping the ordered control command sets according to a preset rule to obtain a plurality of control command subsets, wherein the number of the control command subsets is at least five; allocating a respective reaction delay time t to each of a plurality of control command subsetsa(ii) a And searching the corresponding control command subset to obtain the corresponding response delay time t based on the data length of the household appliance control commanda。
In a preferred embodiment, if the number of the control command subsets is five, the control command subsets are respectively defined as a first control command subset, a second control command subset, a third control command subset, a fourth control command subset and a fifth control command subset; the length of the control command in the first control command subset is greater than that of the control command in the second control command subset, the length of the control command in the second control command subset is greater than that of the control command in the third control command subset, the length of the control command in the third control command subset is greater than that of the control command in the fourth control command subset, and the length of the control command in the fourth control command subset is greater than that of the control command in the fifth control command subset; assigning a first reaction delay time to each control command in the first subset of control commands, a second reaction delay time to each control command in the second subset of control commands, a third reaction delay time to each control command in the third subset of control commands, a fourth reaction delay time to each control command in the fourth subset of control commands, and a fifth reaction delay time to each control command in the fifth subset of control commands; wherein the first reaction delay time is greater than the second reaction delay time, the second reaction delay time is greater than the third reaction delay time, the third reaction delay time is greater than the fourth reaction delay time, and the fourth reaction delay time is greater than the fifth reaction delay time.
The invention also provides a remote control system with adjustable control frequency for the intelligent household appliance, which is characterized in that: the remote control system with adjustable control frequency for intelligent household appliances comprises: a plurality of mobile control terminals; an intelligent appliance; the intelligent household appliance control center is in communication connection with each mobile control terminal in the plurality of mobile control terminals, and is in communication connection with the intelligent household appliances; wherein the intelligent appliance control center is configured to: receiving a household appliance control command, wherein the household appliance control command is sent by a mobile control terminal; in response to receiving the household appliance control command, analyzing the household appliance control command to obtain the data length of the household appliance control command; setting a retransmission timer based on the data length of the appliance control command, wherein setting the retransmission timer comprises setting an timeout period of the retransmission timer; after the retransmission timer is set, forwarding a household appliance control command to the intelligent household appliance, and starting to retransmit the timer; judging whether a control command reception confirmation message or a control command reception negative confirmation message is received before the retransmission timer is overtime; if the control command reception confirmation message is received before the retransmission timer times out, resetting the timeout duration of the retransmission timer and zeroing the retransmission timer; if the control command receiving confirmation message is not received before the retransmission timer is overtime, the retransmission timer is reset to zero, and the household appliance control command is retransmitted to the intelligent household appliance; and if the control command reception negative acknowledgement message is received before the retransmission timer times out, zeroing the retransmission timer and retransmitting the appliance control command to the intelligent appliance.
In a preferred embodiment, wherein the control command reception acknowledgement message is sent by the intelligent appliance in response to receiving the control command, and wherein the control command reception negative acknowledgement message is sent by the intelligent appliance in response to receiving the control command that cannot be correctly interpreted.
In a preferred embodiment, the setting of the retransmission timer based on the data length of the appliance control command specifically includes the following steps: estimating the response delay time t based on the data length of the household appliance control commandaWherein the reaction is delayed by a time taThe time length is from the moment when the intelligent household appliance control center forwards the household appliance control command to the intelligent household appliance to the moment when the intelligent household appliance sends a control command receiving confirmation message or a control command receiving negative confirmation message to the intelligent household appliance control center; estimating the transmission delay time t of a control command reception acknowledgement message or a control command reception negative acknowledgement messageb(ii) a Setting the timeout period T of the retransmission timer so that T ═ Ta+tb+ts(ii) a Wherein, tsIs a guard period.
In a preferred embodiment, the estimating of the response delay time based on the data length of the appliance control command includes the steps of: establishing an allowed control command set by an intelligent household appliance control center;
sequencing the control commands in the allowed control command set according to the control command length in the allowed control command set; grouping the ordered control command sets according to a preset rule to obtain a plurality of control command subsets, wherein the number of the control command subsets is at least five; allocating a respective reaction delay time t to each of a plurality of control command subsetsa(ii) a And searching the corresponding control command subset to obtain the corresponding response delay time t based on the data length of the household appliance control commanda。
In a preferred embodiment, if the number of the control command subsets is five, the control command subsets are respectively defined as a first control command subset, a second control command subset, a third control command subset, a fourth control command subset and a fifth control command subset; the length of the control command in the first control command subset is greater than that of the control command in the second control command subset, the length of the control command in the second control command subset is greater than that of the control command in the third control command subset, the length of the control command in the third control command subset is greater than that of the control command in the fourth control command subset, and the length of the control command in the fourth control command subset is greater than that of the control command in the fifth control command subset; assigning a first reaction delay time to each control command in the first subset of control commands, a second reaction delay time to each control command in the second subset of control commands, a third reaction delay time to each control command in the third subset of control commands, a fourth reaction delay time to each control command in the fourth subset of control commands, and a fifth reaction delay time to each control command in the fifth subset of control commands; wherein the first reaction delay time is greater than the second reaction delay time, the second reaction delay time is greater than the third reaction delay time, the third reaction delay time is greater than the fourth reaction delay time, and the fourth reaction delay time is greater than the fifth reaction delay time.
Compared with the prior art, the invention has the following advantages: the existing intelligent home control method and system are simple, single in function and incapable of transmitting complex commands. The following problems may occur if complex commands are transmitted using current systems: in order to be able to transmit a complex command, the transmission delay is inevitably increased, which requires increasing the timeout time of the retransmission timer, and although this modification satisfies the transmission requirement for the complex command, it does not make any sense to increase the timeout time of the retransmission timer for a simple command, and at the same time, increasing the timeout time of the retransmission timer means increasing the retransmission judgment time, resulting in a decrease in the response speed of the system. The prior art still fails to overcome this drawback. In order to overcome the defect, the invention provides a control method with variable timer time, which can self-adaptively adjust the length of the timer, can meet the transmission requirement of a complex command when encountering the complex command, and can automatically modify the length of the timer and reduce the control delay when encountering a simple command.
Drawings
Fig. 1 is a flowchart of a remote control method according to an embodiment of the present invention.
Fig. 2 is a block diagram of a remote control system according to an embodiment of the present invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Fig. 1 is a flowchart of a remote control method according to an embodiment of the present invention. As shown in the figure, the remote control method of the present invention includes the steps of:
step 101: receiving a household appliance control command by an intelligent household appliance control center, wherein the household appliance control command is sent by a mobile control terminal;
step 102: in response to receiving the household appliance control command, the intelligent household appliance control center analyzes the household appliance control command to obtain the data length of the household appliance control command;
step 103: setting, by the intelligent appliance control center, a retransmission timer based on the data length of the appliance control command, wherein setting the retransmission timer comprises setting an timeout duration of the retransmission timer;
step 104: after setting the retransmission timer, forwarding a household appliance control command to the intelligent household appliance by the intelligent household appliance control center, and starting to retransmit the timer;
step 105: judging whether a control command receiving confirmation message or a control command receiving negative confirmation message is received before the retransmission timer is overtime by the intelligent household appliance control center;
step 106: if the control command reception confirmation message is received before the retransmission timer times out, resetting the timeout duration of the retransmission timer and zeroing the retransmission timer;
step 107: if the control command receiving confirmation message is not received before the retransmission timer is overtime, the retransmission timer is reset to zero, and the household appliance control command is retransmitted to the intelligent household appliance; and
step 108: and if the control command receiving negative confirmation message is received before the retransmission timer is overtime, the retransmission timer is reset to zero, and the household appliance control command is retransmitted to the intelligent household appliance.
In a preferred embodiment, wherein the control command reception acknowledgement message is sent by the intelligent appliance in response to receiving the control command, and wherein the control command reception negative acknowledgement message is sent by the intelligent appliance in response to receiving the control command that cannot be correctly interpreted.
In a preferred aspectIn the embodiment, the setting of the retransmission timer based on the data length of the appliance control command specifically includes the following steps: estimating the response delay time t based on the data length of the household appliance control commandaWherein the reaction is delayed by a time taThe time length is from the moment when the intelligent household appliance control center forwards the household appliance control command to the intelligent household appliance to the moment when the intelligent household appliance sends a control command receiving confirmation message or a control command receiving negative confirmation message to the intelligent household appliance control center; estimating the transmission delay time t of a control command reception acknowledgement message or a control command reception negative acknowledgement messageb(ii) a Setting the timeout period T of the retransmission timer so that T ═ Ta+tb+ts(ii) a Wherein, tsThe length of the guard period for the guard period may be obtained from experience of a person skilled in the art, and in general the length of the guard period may be equal to 5-10% of the timeout period T.
In a preferred embodiment, the estimating of the response delay time based on the data length of the appliance control command includes the steps of: establishing an allowed control command set by an intelligent household appliance control center; sequencing the control commands in the allowed control command set according to the control command length in the allowed control command set; grouping the ordered control command sets according to a preset rule (according to the length of the control commands) to obtain a plurality of control command subsets, wherein the number of the control command subsets is at least five; allocating a respective reaction delay time t to each of a plurality of control command subsetsa(ii) a Searching the corresponding control command subset based on the data length of the household appliance control command to obtain the corresponding response delay time ta。
In a preferred embodiment, if the number of the control command subsets is five, the control command subsets are respectively defined as a first control command subset, a second control command subset, a third control command subset, a fourth control command subset and a fifth control command subset; the length of the control command in the first control command subset is greater than that of the control command in the second control command subset, the length of the control command in the second control command subset is greater than that of the control command in the third control command subset, the length of the control command in the third control command subset is greater than that of the control command in the fourth control command subset, and the length of the control command in the fourth control command subset is greater than that of the control command in the fifth control command subset; assigning a first reaction delay time to each control command in the first subset of control commands, a second reaction delay time to each control command in the second subset of control commands, a third reaction delay time to each control command in the third subset of control commands, a fourth reaction delay time to each control command in the fourth subset of control commands, and a fifth reaction delay time to each control command in the fifth subset of control commands; wherein the first reaction delay time is greater than the second reaction delay time, the second reaction delay time is greater than the third reaction delay time, the third reaction delay time is greater than the fourth reaction delay time, and the fourth reaction delay time is greater than the fifth reaction delay time.
For example, based on the data length of the appliance control command, the estimation of the response delay time may be performed as follows: firstly, an allowed control command set is established by an intelligent household appliance control center, wherein the control command set may comprise a command of emergency shutdown, a command of adjusting power, a command of switching on and off the intelligent household appliance, a command for instructing the intelligent household appliance to complete a certain task, and even a command for instructing the intelligent household appliance to download data and transmit the data to a mobile terminal. All commands need to conform to a certain encoding rule, so the commands have fixed lengths, but the fixed lengths of the commands are obviously different. For example, the command length for emergency shutdown is the shortest, the command for switching on and off the intelligent appliance is longer, the command for adjusting power is longer, the command for instructing the intelligent appliance to complete a certain task is longer, and the command for instructing the intelligent appliance to download data and transmit the data to the mobile terminal is the longest.
Then, the above commands are sorted, and the sorting result should be: a command to emergency shutdown (assuming a length of 10 units of time), a command to switch the smart appliance on and off (assuming a length of 20 units of time), a command to adjust power (assuming a length of 30 units of time), a command to instruct the smart appliance to perform a certain task (assuming a length of 100 units of time), and a command to instruct the smart appliance to download data and transmit the data to the mobile terminal (assuming a length of 300 units of time).
The number of subsets required is then determined and assuming five subsets are required, the subset limit can be found by dividing the maximum length of 300 units of time by 5. Specifically, the first subset is 0-60 unit times, the second subset is 61-120 unit times, the third subset is 121-180 unit times, the fourth subset is 181-240 unit times, and the fifth subset is 241-300 unit times in this example. It can be seen that the command for emergency shutdown (assuming a length of 10 units of time), the command for switching on and off the smart appliance (assuming a length of 20 units of time), and the command for adjusting power (assuming a length of 30 units of time) belong to the first subset, the command for instructing the smart appliance to perform a certain task (assuming a length of 100 units of time) belongs to the second subset, and the command for instructing the smart appliance to download data and transmit the data to the mobile terminal (assuming a length of 300 units of time) belongs to the fifth subset.
The first to fifth subsets are then assigned reaction delay times taThe length of the reaction delay time corresponding to each command can then be determined.
The invention also provides a remote control system with adjustable control frequency for the intelligent household appliance, which comprises: a plurality of mobile control terminals (201a-201 x); intelligent appliances (202a-202 x); and an intelligent appliance control center 203. The intelligent household appliance control center 203 is in communication connection with each mobile control terminal in the plurality of mobile control terminals, and is in communication connection with the intelligent household appliance;
wherein the intelligent appliance control center is configured to: receiving a household appliance control command, wherein the household appliance control command is sent by a mobile control terminal; in response to receiving the household appliance control command, analyzing the household appliance control command to obtain the data length of the household appliance control command; setting a retransmission timer based on the data length of the appliance control command, wherein setting the retransmission timer comprises setting an timeout duration of the retransmission timer; after the retransmission timer is set, forwarding the household appliance control command to the intelligent household appliance, and starting the retransmission timer; judging whether a control command reception confirmation message or a control command reception negative confirmation message is received before the retransmission timer is overtime; resetting a timeout duration of the retransmission timer and zeroing the retransmission timer if a control command reception acknowledgement message is received before the retransmission timer times out; if the control command receiving confirmation message is not received before the retransmission timer is overtime, the retransmission timer is reset to zero, and the household appliance control command is retransmitted to the intelligent household appliance; and if a control command reception negative acknowledgement message is received before the retransmission timer times out, zeroing the retransmission timer and retransmitting the appliance control command to the intelligent appliance.
In a preferred embodiment, the control command reception acknowledgement message is sent by the intelligent appliance in response to receiving the control command, and the control command reception negative acknowledgement message is sent by the intelligent appliance in response to receiving a control command that cannot be correctly interpreted.
In a preferred embodiment, the setting of the retransmission timer based on the data length of the appliance control command specifically includes the following steps: estimating a reaction delay time t based on a data length of the home appliance control commandaWherein the reaction delay time taIs a time length from a time when the intelligent home appliance control center forwards the home appliance control command to the intelligent home appliance to a time when the intelligent home appliance sends the control command reception acknowledgement message or the control command reception negative acknowledgement message to the intelligent home appliance control center; estimating the transmission delay time t of the control command reception acknowledgement message or the control command reception negative acknowledgement messageb(ii) a Setting a timeout period T of the retransmission timer such that T ═ Ta+tb+ts(ii) a Wherein, t issIs a guard period.
In a preferred embodiment, the estimating of the response delay time based on the data length of the appliance control command includes the steps of: establishing, by the intelligent appliance control center, an allowed set of control commands; sorting the control commands in the allowed control command set according to the control command length in the allowed control command set; grouping the ordered control command sets according to a preset rule to obtain a plurality of control command subsets, wherein the number of the control command subsets is at least five; assigning a respective reaction delay time t to each of the plurality of control command subsetsa(ii) a Searching a corresponding control command subset to obtain a corresponding response delay time t based on the data length of the household appliance control commanda。
In a preferred embodiment, if the number of the control command subsets is five, each of the control command subsets is defined as a first control command subset, a second control command subset, a third control command subset, a fourth control command subset, and a fifth control command subset, respectively; the length of the control command in the first control command subset is greater than that of the control command in the second control command subset, the length of the control command in the second control command subset is greater than that of the control command in the third control command subset, the length of the control command in the third control command subset is greater than that of the control command in the fourth control command subset, and the length of the control command in the fourth control command subset is greater than that of the control command in the fifth control command subset; assigning a first reaction delay time to each control command in the first control command subset, a second reaction delay time to each control command in the second control command subset, a third reaction delay time to each control command in the third control command subset, a fourth reaction delay time to each control command in the fourth control command subset, and a fifth reaction delay time to each control command in the fifth control command subset; the first reaction delay time is longer than the second reaction delay time, the second reaction delay time is longer than the third reaction delay time, the third reaction delay time is longer than the fourth reaction delay time, and the fourth reaction delay time is longer than the fifth reaction delay time.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (2)
1. A remote control method for adjusting control frequency of an intelligent household appliance is characterized in that: the remote control method for the intelligent household appliance with adjustable control frequency comprises the following steps:
receiving a household appliance control command by an intelligent household appliance control center, wherein the household appliance control command is sent by a mobile control terminal;
responding to the received household appliance control command, and analyzing the household appliance control command by the intelligent household appliance control center to obtain the data length of the household appliance control command;
setting, by the intelligent appliance control center, a retransmission timer based on the data length of the appliance control command, wherein setting the retransmission timer comprises setting an timeout duration of the retransmission timer;
after the retransmission timer is set, forwarding the household appliance control command to the intelligent household appliance by the intelligent household appliance control center, and starting the retransmission timer;
judging, by the intelligent appliance control center, whether a control command reception acknowledgement message or a control command reception negative acknowledgement message is received before the retransmission timer times out;
resetting a timeout duration of the retransmission timer and zeroing the retransmission timer if a control command reception acknowledgement message is received before the retransmission timer times out;
if the control command receiving confirmation message is not received before the retransmission timer is overtime, the retransmission timer is reset to zero, and the household appliance control command is retransmitted to the intelligent household appliance; and
resetting the retransmission timer to zero and re-forwarding the appliance control command to the intelligent appliance if a control command reception negative acknowledgement message is received before the retransmission timer times out,
wherein the control command reception acknowledgement message is transmitted by the smart appliance in response to receiving the control command, and wherein the control command reception negative acknowledgement message is transmitted by the smart appliance in response to receiving a control command that cannot be correctly interpreted,
wherein, based on the data length of the household appliance control command, setting a retransmission timer specifically comprises the following steps:
estimating a reaction delay time t based on a data length of the home appliance control commandaWherein the reaction delay time taIs a time length from a time when the intelligent home appliance control center forwards the home appliance control command to the intelligent home appliance to a time when the intelligent home appliance sends the control command reception acknowledgement message or the control command reception negative acknowledgement message to the intelligent home appliance control center;
estimating the transmission delay time t of the control command reception acknowledgement message or the control command reception negative acknowledgement messageb(ii) a And
setting a timeout period T of the retransmission timer such that T ═ Ta+tb+ts；
Wherein, t issIn order to protect the time period,
wherein estimating the response delay time based on the data length of the appliance control command comprises the steps of:
establishing, by the intelligent appliance control center, an allowed set of control commands;
sorting the control commands in the allowed control command set according to the control command length in the allowed control command set;
grouping the ordered control command sets according to a preset rule to obtain a plurality of control command subsets, wherein the number of the control command subsets is at least five;
assigning a respective reaction delay time t to each of the plurality of control command subsetsa(ii) a And
searching a corresponding control command subset to obtain a corresponding response delay time t based on the data length of the household appliance control commanda，
If the number of the control command subsets is five, respectively defining the control command subsets as a first control command subset, a second control command subset, a third control command subset, a fourth control command subset and a fifth control command subset;
the length of the control command in the first control command subset is greater than that of the control command in the second control command subset, the length of the control command in the second control command subset is greater than that of the control command in the third control command subset, the length of the control command in the third control command subset is greater than that of the control command in the fourth control command subset, and the length of the control command in the fourth control command subset is greater than that of the control command in the fifth control command subset;
assigning a first reaction delay time to each control command in the first control command subset, a second reaction delay time to each control command in the second control command subset, a third reaction delay time to each control command in the third control command subset, a fourth reaction delay time to each control command in the fourth control command subset, and a fifth reaction delay time to each control command in the fifth control command subset;
the first reaction delay time is longer than the second reaction delay time, the second reaction delay time is longer than the third reaction delay time, the third reaction delay time is longer than the fourth reaction delay time, and the fourth reaction delay time is longer than the fifth reaction delay time.
2. The utility model provides a control frequency adjustable remote control system to intelligent household electrical appliances which characterized in that: the remote control system with adjustable control frequency for the intelligent household appliance comprises:
a plurality of mobile control terminals;
an intelligent appliance; and
the intelligent household appliance control center is in communication connection with each mobile control terminal in the plurality of mobile control terminals, and is in communication connection with the intelligent household appliance;
wherein the intelligent appliance control center is configured to:
receiving a household appliance control command, wherein the household appliance control command is sent by a mobile control terminal;
in response to receiving the household appliance control command, analyzing the household appliance control command to obtain the data length of the household appliance control command;
setting a retransmission timer based on the data length of the appliance control command, wherein setting the retransmission timer comprises setting an timeout duration of the retransmission timer;
after the retransmission timer is set, forwarding the household appliance control command to the intelligent household appliance, and starting the retransmission timer;
judging whether a control command reception confirmation message or a control command reception negative confirmation message is received before the retransmission timer is overtime;
resetting a timeout duration of the retransmission timer and zeroing the retransmission timer if a control command reception acknowledgement message is received before the retransmission timer times out;
if the control command receiving confirmation message is not received before the retransmission timer is overtime, the retransmission timer is reset to zero, and the household appliance control command is retransmitted to the intelligent household appliance; and
resetting the retransmission timer to zero and re-forwarding the appliance control command to the intelligent appliance if a control command reception negative acknowledgement message is received before the retransmission timer times out,
wherein the control command reception acknowledgement message is transmitted by the smart appliance in response to receiving the control command, and wherein the control command reception negative acknowledgement message is transmitted by the smart appliance in response to receiving a control command that cannot be correctly interpreted,
wherein, based on the data length of the household appliance control command, setting a retransmission timer specifically comprises the following steps:
estimating a reaction delay time t based on a data length of the home appliance control commandaWherein the reaction delay time taIs a time length from a time when the intelligent home appliance control center forwards the home appliance control command to the intelligent home appliance to a time when the intelligent home appliance sends the control command reception acknowledgement message or the control command reception negative acknowledgement message to the intelligent home appliance control center;
estimating the transmission delay time t of the control command reception acknowledgement message or the control command reception negative acknowledgement messageb；
Setting a timeout period T of the retransmission timer such that T ═ Ta+tb+ts；
Wherein, t issIn order to protect the time period,
wherein estimating the response delay time based on the data length of the appliance control command comprises the steps of:
establishing, by the intelligent appliance control center, an allowed set of control commands;
sorting the control commands in the allowed control command set according to the control command length in the allowed control command set;
grouping the ordered control command sets according to a preset rule to obtain a plurality of control command subsets, wherein the number of the control command subsets is at least five;
assigning a respective reaction delay time t to each of the plurality of control command subsetsa；
Searching a corresponding control command subset to obtain a corresponding response delay time t based on the data length of the household appliance control commanda，
If the number of the control command subsets is five, respectively defining the control command subsets as a first control command subset, a second control command subset, a third control command subset, a fourth control command subset and a fifth control command subset;
the length of the control command in the first control command subset is greater than that of the control command in the second control command subset, the length of the control command in the second control command subset is greater than that of the control command in the third control command subset, the length of the control command in the third control command subset is greater than that of the control command in the fourth control command subset, and the length of the control command in the fourth control command subset is greater than that of the control command in the fifth control command subset;
assigning a first reaction delay time to each control command in the first control command subset, a second reaction delay time to each control command in the second control command subset, a third reaction delay time to each control command in the third control command subset, a fourth reaction delay time to each control command in the fourth control command subset, and a fifth reaction delay time to each control command in the fifth control command subset;
the first reaction delay time is longer than the second reaction delay time, the second reaction delay time is longer than the third reaction delay time, the third reaction delay time is longer than the fourth reaction delay time, and the fourth reaction delay time is longer than the fifth reaction delay time.
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