CN112071052A - Infrared repeater system, infrared repeater and data learning method thereof - Google Patents
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Abstract
The invention relates to an infrared forwarding system, an infrared repeater and a data learning method thereof, belonging to the field of intelligent home control, wherein the method comprises the following steps: receiving infrared code waveform data consisting of N high and low levels, and recording the duration of each level to obtain level duration data; and (3) learning infrared code waveform data: and coding each level duration in the level duration data, compressing into a coding sequence formed by a plurality of code values, wherein each code value is a code corresponding to the duration of the level, and at least recording whether one code value in the sequence is a high level or a low level to obtain a compressed code of the infrared code waveform data, and storing the compressed code. The converted compressed coding data volume is greatly reduced compared with the existing infrared code waveform data volume which is directly collected and stored, the required storage space is small, the storage cost of the infrared transponder can be reduced, and the economy is high.
Description
Technical Field
The invention belongs to the field of intelligent home control, and particularly relates to an infrared forwarding system, an infrared repeater and a data learning method thereof.
Background
The existing household equipment such as an air conditioner, a television, an intelligent dust collector, an intelligent curtain and the like is controlled by independently arranging infrared remote controllers, and because the infrared remote controllers are incompatible with each other, the household appliances are respectively controlled by controlling the infrared remote controllers, the problem that the corresponding infrared remote controllers cannot be found is easily caused, and great inconvenience is brought to users in daily life. Therefore, a unified remote controller, i.e., an infrared repeater, has appeared, which can control various home appliances by learning infrared code waveform data of each infrared remote controller. For example, when a user operates a key of a known function on the mobile terminal, the infrared transponder sets a corresponding analysis rule, receives infrared code data through the infrared receiving circuit, learns the infrared code data, and stores the learned infrared code data.
At present, because the waveform structures of infrared code waveform data in infrared remote controllers produced by various household electrical appliance manufacturers are different, a processor in an infrared repeater can only perform all sampling through an IO interface, the acquired data volume is large, a coding storage module with a large storage space needs to be arranged, the cost of the infrared repeater is directly increased, and the economy is poor.
Disclosure of Invention
The invention aims to provide an infrared forwarding system, an infrared repeater and a data learning method thereof, which are used for solving the problems of high storage cost and poor economical efficiency caused by the fact that infrared code waveform data of all infrared remote controllers need to be collected and stored in the prior art.
Based on the above purpose, a technical scheme of a data learning method of an infrared transponder is as follows:
receiving infrared code waveform data consisting of N high and low levels, and recording the duration of each level to obtain level duration data;
and coding each level duration in the level duration data, compressing into a coding sequence formed by a plurality of code values, wherein each code value is a code corresponding to the duration of the level, and at least recording whether one code value in the sequence is a high level or a low level to obtain a compressed code of the infrared code waveform data, and storing the compressed code.
Based on the above purpose, a technical scheme of the infrared transponder is as follows:
comprising a processor and a memory, the processor executing a computer program stored in the memory to implement the steps of:
acquiring infrared code waveform data consisting of N high and low levels, and recording the duration of each level to obtain level duration data;
and coding each level duration in the level duration data, compressing into a coding sequence formed by a plurality of code values, wherein each code value is a code corresponding to the duration of the level, at least recording whether one code value in the sequence is a high level or a low level, obtaining a compressed code of the infrared code waveform data, and storing the compressed code into a memory.
The two technical schemes have the beneficial effects that:
the invention records the infrared code waveform data into a coding sequence of continuous code values by carrying out a series of recording processing on the acquired infrared code waveform data, each high/low level corresponds to a code value, each code value represents the duration of the corresponding high or low level, and at least one code value in the recording sequence corresponds to a high level or a low level, so as to obtain compressed codes. In addition, when the infrared transponder responds to the instruction of the user and needs to extract corresponding infrared code waveform data, the compression codes can be decompressed as long as the time length corresponding to the recorded code values and the high level or the low level corresponding to a certain code value are used, so that the corresponding infrared code data can be obtained.
Preferably, the encoding of each level duration and the compression of the infrared code waveform data into a code sequence formed by a plurality of code values includes: extracting a plurality of durations in the level duration data, and matching a unique code value for each duration to form a characteristic value sequence; and converting each level duration in the level duration data into a corresponding code value in the characteristic value sequence. The characteristic value sequence and the coding sequence form compressed codes of the infrared code waveform data.
The invention extracts all values of different level durations in infrared code waveform data, each duration is matched with a unique code value to form a characteristic value sequence, each level duration in the level duration data is converted into the same code value in the sequence and is recorded according to the front and back sequence, and at least one code value in the sequence is required to be recorded to be a high level or a low level, thereby obtaining compressed codes. Therefore, compared with the prior art that at least two bytes are needed for storing each level of infrared code waveform data by taking microseconds as a unit, the invention only needs 0.5 byte for converting the data into codes to store, thereby greatly saving the storage space; in addition, during decompression, original infrared code waveform data can be obtained through conversion as long as the code value consistent with the code value in the characteristic value sequence is searched according to the code value.
In order to facilitate decompression of compression coding, further, the first code value in the sequence is recorded as a high level or a low level, when the compression coding needs to be decompressed, the level of each level can be easily and sequentially determined from the first code value according to the sequence from front to back, and the rapid decompression of the original infrared code waveform data is realized.
In order to improve the working efficiency of compression coding, further, the levels with the same time length are represented as the same code value, and/or the levels with the time difference between the time lengths within a set range are represented as the same code value, so that the code values with the same and/or similar time lengths in two unit signals which are equivalent to data codes in infrared code waveform data are represented by one code value, the expression of the code values is simplified, and the speed of compression coding is improved. In addition, the original recording of the time length corresponding to each code value is changed into the recording of the code values represented by different and/or dissimilar time lengths, the recording time is short, and the storage space is further reduced.
Based on the above purpose, a technical scheme of the infrared forwarding system is as follows:
the infrared repeater comprises the infrared repeater and a host machine which is in communication connection with the infrared repeater, wherein the host machine is used for transmitting a control instruction sent by a user to the infrared repeater, so that the control of the user on the infrared repeater is realized.
Furthermore, the host is also in communication connection with a mobile terminal of a user through a cloud platform and is used for receiving a control instruction sent by the user through the cloud platform, so that the user can conveniently realize remote control on the infrared transponder through the cloud platform.
Drawings
FIG. 1 is a circuit diagram of an implementation of an infrared receiving circuit of the present invention;
FIG. 2 is a circuit diagram of an implementation of the processor of the present invention;
FIG. 3 is a power supply circuit diagram of the processor of the present invention;
FIG. 4 is a circuit diagram of an implementation of the infrared transmission circuit of the present invention;
FIG. 5 is a circuit diagram of an implementation of the ZigBee module of the present invention;
FIG. 6 is a circuit diagram of a key circuit according to the present invention;
FIG. 7 is a circuit diagram of the status indicator lamp of the present invention;
fig. 8 is a diagram of a connection relationship of the infrared repeater of the present invention in an infrared repeating system;
fig. 9 is a flow chart of a data learning method of the infrared repeater of the present invention.
Detailed Description
Because the analysis rule of infrared code data of each manufacturer is unknown, the principle of the invention during learning is that the infrared transponder can complete learning as long as the infrared transponder completely records data, and the infrared transponder does not need to know the analysis rule of the infrared code data and does not need to learn any analysis rule on specific contents; after learning to obtain the compression codes, the same infrared code data can be completely cloned when decompression is needed.
The following further describes embodiments of the present invention with reference to the drawings.
The embodiment provides an infrared transponder, which comprises a shell, a processor, an encoding memory, an infrared receiving circuit and an infrared transmitting circuit, wherein the processor and the encoding memory are arranged in the shell, and the processor is connected with a mobile terminal of a user through a wireless communication module. In this embodiment, the processor is further connected to a key circuit and a status indicator circuit.
Specifically, the infrared receiving circuit mainly uses a broadband receiving head, and can receive infrared signals (i.e., infrared code waveform data) within a range of 20KHZ to 60KHZ, and the circuit diagram is implemented as shown in fig. 1, and a broadband infrared receiving circuit of the model CHQ0038 is adopted, and a terminal HWRX is connected with the processor and used for sending the received infrared signals to the processor.
The infrared receiving circuit is used for collecting infrared code waveform data (sent by an infrared remote controller) consisting of N high and low levels, and comprises a guide code and a data code.
The processor executes the computer program stored in the memory to implement the following data learning steps of the infrared transponder:
as shown in fig. 9, infrared code waveform data composed of N high and low levels is received, the time length of each level is recorded, and level time length data is obtained, and taking the infrared code waveform data composed of 10(N ═ 10) levels as an example, the recorded level time length data are 9000 μ s, 4500 μ s, 560 μ s, 1680 μ s, 560 μ s are the high and low level time lengths of the first unit signal (e.g., 1) in the data code, 560 μ s, 1680 μ s are the high and low level time lengths of the second unit signal (e.g., 0).
Extracting different durations in the level duration data, matching unique code values for each duration, and forming a characteristic value sequence: 9000,0B0001,4500,0B0010,560,0B0011,1680, and 0B0100, where 0B and 0B both represent binary, the code value corresponding to 9000 is 0B0001, the code value corresponding to 4500 is 0B0010, the code value corresponding to 560 is 0B0011, and the code value corresponding to 1680 is 0B0100, and the original infrared code waveform data is converted into the code sequence of 0B0001,0B0010,0B0011, 0B0011,0B 0011,0B 0100, 0B0011,0B 0011, and 0B0011 according to the correspondence between the duration and the code value in the characteristic value sequence.
The characteristic value sequence and the coding sequence form compressed codes of the infrared code waveform data, and the compressed codes are stored. In addition, in order to realize that the infrared code waveform data can be decompressed after compression coding, at least one code value in the sequence is determined and stored to be corresponding to a high level or a low level, and the first code value 0b0001 is determined to be corresponding to a high level by taking the coding sequence as an example, so that when the compression coding needs to be decompressed, the levels of the low and high intervals are sequentially determined from the second code value to the tenth code value according to the characteristic of the appearance of the high and low level intervals. As another embodiment, the level corresponding to the 5 th code value may be determined, for example, the level is low, and when compression encoding and decompression are performed, the level corresponding to each code value can be determined in two directions (5 th code value-1 st code value, 5 th code value-10 th code value) sequentially forward and backward from the 5 th code value; optionally, the level of the 10 th code value may also be determined, for example, as a high level, and then, during decompression, the levels are sequentially determined as low and high intervals from the 9 th code value to the 1 st code value.
In this embodiment, the processor is implemented by using a single chip microcomputer STM32F030C8T6, as shown in fig. 2, the terminal HWRX is used to connect a terminal HWRX of the infrared receiving circuit, the terminal HWTX is used to output an infrared signal, the terminal LED is used to connect a status indicator lamp circuit, the terminal KEY is used to connect a KEY circuit, and the terminals TX and RX are both used for a ZigBee module. The power supply circuit of the processor is firstly powered by a 5V/2A adapter and then regulated by a switch power supply chip TLV62569DBVR as shown in figure 3.
The code storage module (namely a memory) is used for storing the compressed codes of the infrared code waveform data; when a user has a control command, the mobile terminal of the user sends the control command to the processor through the wireless communication module (such as the ZigBee module), the processor acquires the code in the code storage module according to the control command of the user, decodes the code, converts the code into a corresponding infrared signal (i.e., infrared code waveform data), and then the infrared transmitting circuit outputs the acquired infrared signal, thereby realizing control of related electrical equipment (i.e., the infrared household appliance in fig. 8). In this embodiment, the infrared transmitting circuit is implemented by using the infrared transmitting circuit shown in fig. 4, and a transmitting tube surrounding layout is used to ensure a large-scale control. In fig. 4, the terminal HWTX is used to connect the terminal HWTX of the processor for transmitting an infrared signal.
In this embodiment, as shown in fig. 5, the ZigBee module is used for connecting with a mobile terminal of a user, the terminals MCU _ RX and MCU _ TX are respectively connected to the terminals RX and TX of the processor, and a serial port of the ZigBee module is connected to a serial port of a single chip in the processor, so as to finally implement a function of wirelessly receiving and transmitting data by the single chip.
As shown in fig. 6, the KEY circuit in this embodiment is mainly used for network access and network disconnection control of a home appliance, and the terminal KEY in the figure is used for connecting the terminal KEY of the processor and implementing on/off of the switch S1 according to a control command of the processor.
The status indicator lamp circuit in this embodiment is shown in fig. 7, where a terminal LED in the figure is used to connect a terminal LED of a processor, and when the household electrical appliance is in an on-network state, the indicator lamp flashes 3 times at an interval of 500ms after being powered on, and then turns off if the household electrical appliance is in an off-network state, the indicator lamp flashes once.
The connection relation of the infrared repeater in the infrared repeating system is shown in fig. 8, the infrared repeater is in communication connection with a host (connected through a ZigBee module), the host is connected with a mobile terminal (APP in a mobile phone or a tablet personal computer) of a user through WIFI, in addition, the host is further connected with a cloud platform through an Ethernet, the cloud platform is connected with the mobile terminal of the user through a mobile network, and when the user carries out remote control, the user can send a control instruction of the user to the host through the cloud platform. That is, when the host and the mobile terminal are connected to the same local area network (for example, the host and the mobile terminal are connected to a router), the mobile terminal directly accesses the host, and the mobile terminal directly communicates with the host through WIFI. When the mobile terminal is not in a local area network, the mobile terminal accesses the cloud platform through the Internet, and the cloud platform forwards an access message (such as a control command) to the host, so that the communication between the mobile terminal and the host is realized. The cloud platform is connected with the host through a TCP/IP protocol, and is used for forwarding messages and providing internet access.
In the following, taking an example that a user controls a certain household appliance on a mobile terminal, the working principles of the infrared transponder in three application scenarios are described as follows:
the application scene one: when the infrared repeater is used for controlling the intelligent equipment at home, a user selects a certain control instruction in a mobile terminal (a mobile phone or a tablet personal computer), the control instruction is transmitted to the infrared repeater through a host, a processor of the infrared repeater extracts a corresponding control code of the code storage module according to the control instruction, and the corresponding infrared information is sent by the infrared transmitting circuit after the control code is decoded, so that the control of the household appliance is realized.
Application scenario two: when the infrared transponder is remotely controlled, the mobile terminal accesses the cloud platform through a mobile network, after a user selects a certain control instruction in the mobile terminal, the cloud platform forwards the control instruction of the mobile terminal to the host, the host transmits the control instruction to the infrared transponder, the processor of the infrared transponder extracts the corresponding control code of the code storage module according to the control instruction, and the corresponding infrared information is sent by the infrared transmitting circuit after decoding, so that the control of the household appliance is realized.
In the level duration data of this embodiment, the levels in the same duration may be the same code value, for example, the code value represented by the duration of 560 μ s is only represented by one code value 0b0011, which better improves the encoding efficiency, as another implementation, the levels in the same duration may be represented by different code values (more than two code values), for example, as the code values represented by the duration of 560 μ s have 0b0011,0b1001, and 0b1101, respectively, two code values 0b0011 and 0b1001 may also be used to represent the duration of 560 μ s, and as an example, the duration represented by three code values 0b0011,0b1001, and 0b1101 is taken as an example, so that the following characteristic value sequence is formed: 9000,0B0001,4500,0B0010,560,0B0011,560,0B1001,560,0B1101,1680 and 0B0100, and correspondingly converting the time length in the level time length data into an encoding sequence. Although the characteristic value sequence with the level of the same time length expressed as different code values is relatively complex compared with the characteristic value sequence with the level of the same time length expressed as the same code value, compared with the existing infrared code waveform data volume directly collected and stored, the method has the advantages that the required storage space is small, the storage cost can be reduced, and the economy is high.
In addition, because the time for acquiring the corresponding levels of a certain unit signal is not necessarily equal, for example, the high-low level time duration of the first unit signal (e.g. 1) may be 560.42 μ s, 565.30 μ s, 573.6 μ s, etc., and the high-low level time duration of the second unit signal (e.g. 0) may also be 560.42 μ s, 565.30 μ s, 573.6 μ s, etc., which are not necessarily strictly 560 μ s, a setting range may be defined, for example, 50 μ s, and the levels with the time difference between the time durations within 50 μ s are represented as the same code value 0b0011, thereby improving the speed of compression coding.
In addition, the processor in this embodiment may be a microprocessor, such as an ARM, or may be a programmable chip, such as an FPGA, a DSP, or the like.
Claims (10)
1. A data learning method of an infrared transponder is characterized by comprising the following steps:
receiving infrared code waveform data consisting of N high and low levels, and recording the duration of each level to obtain level duration data;
and coding each level duration in the level duration data, compressing into a coding sequence formed by a plurality of code values, wherein each code value is a code corresponding to the duration of the level, and at least recording whether one code value in the sequence is a high level or a low level to obtain a compressed code of the infrared code waveform data, and storing the compressed code.
2. The data learning method of an infrared repeater according to claim 1, wherein the encoding of each level duration, the compressing of the infrared code waveform data into a code sequence of several code values comprises: extracting a plurality of durations in the level duration data, and matching a unique code value for each duration to form a characteristic value sequence; converting each level duration in the level duration data into a corresponding code value in the characteristic value sequence;
the characteristic value sequence and the coding sequence form compressed codes of the infrared code waveform data.
3. The data learning method of an infrared repeater according to claim 1 or 2, characterized in that at least the first code value in the sequence is recorded as high level or low level.
4. The data learning method of an infrared repeater according to claim 1, wherein the levels of the same time period are represented as the same code value and/or the levels of the time difference between the time periods within the set range are represented as the same code value.
5. An infrared transponder, comprising a processor and a memory, the processor executing a computer program stored in the memory to perform the steps of:
acquiring infrared code waveform data consisting of N high and low levels, and recording the duration of each level to obtain level duration data;
and coding each level duration in the level duration data, compressing into a coding sequence formed by a plurality of code values, wherein each code value is a code corresponding to the duration of the level, at least recording whether one code value in the sequence is a high level or a low level, obtaining a compressed code of the infrared code waveform data, and storing the compressed code into a memory.
6. The IR repeater according to claim 5, wherein the encoding of each level duration, the compressing of the IR code waveform data into a code sequence of code values comprises:
extracting a plurality of durations in the level duration data, and matching a unique code value for each duration to form a characteristic value sequence;
converting each level duration in the level duration data into a corresponding code value in the characteristic value sequence; the characteristic value sequence and the coding sequence form compressed codes of the infrared code waveform data.
7. An infrared transponder as claimed in claim 5 or 6, characterized in that at least the first code value in the sequence is recorded as high or low.
8. An infrared transponder as claimed in claim 5, characterized in that the levels of the same duration are represented by the same code value and/or the levels of the time differences between the durations within the set range are represented by the same code value.
9. An infrared repeater system, comprising an infrared repeater according to any one of claims 5 to 8, and a host computer communicatively connected to the infrared repeater, the host computer being configured to transmit a control command sent by a user to the infrared repeater.
10. The infrared forwarding system of claim 9, wherein the host is further communicatively connected to a mobile terminal of a user through a cloud platform, and configured to receive a control command sent by the user through the cloud platform.
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Application publication date: 20201211 |