CN102968897A - Household appliance remote control method based on handheld equipment - Google Patents
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Abstract
The invention provides a household appliance remote control method based on handheld equipment. According to the household appliance remote control method, handheld equipment and a conversion device are equipped. The household appliance remote control method comprises the following steps that: the handheld equipment remotely controls household appliances and learns control instructions, wherein modulated audio signals are transmitted through audio ports according to control orders (of various household appliances) built in the intelligent handheld equipment; the audio signals are converted into infrared control signals which can be identified by the household appliances through the external conversion device, so as to realize the method that the household appliances are controlled through the intelligent handheld equipment; and by utilizing the method that the handheld equipment learns the control instructions, unknown infrared control signals are acquired and analyzed through the conversion device and subsequently loaded to the handheld equipment to be stored up, so that the purpose of learning is achieved.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a method for communication between handheld equipment and common infrared equipment, in particular to a household appliance remote control method based on the handheld equipment.
[ background of the invention ]
The remote control technology of various household electronic devices is widely used in production and life, particularly in the field of household appliances, a remote controller becomes necessary control equipment for household appliances such as televisions, DVD machines, air conditioners and the like, and the remote control equipment is characterized in that each equipment is provided with one remote controller. It is therefore already commonplace to place 4 to 5 remote controllers in each family living room. In recent years, a device called a universal remote controller is also available in the market, and the device can bind the functions of a plurality of remote controllers on a special remote controller to finish the unified control of various household appliances. However, the universal remote controller has the problems that only one fixed television, a DVD machine and an air conditioner can be controlled, if other equipment needs to be controlled, the original setting can be eliminated if the remote controller needs to be reset, for example, the remote controller for controlling the television in a living room cannot be used when being taken into a bedroom, and the remote controller is large in size, easy to damage and inconvenient to use.
The remote control technology adopted in the field of household electronic products is infrared generally, the infrared remote control is a wireless and non-contact control technology, and the remote control system has the remarkable advantages of strong anti-interference capability, reliable information transmission, low power consumption, low cost, easiness in realization and the like, is widely adopted by a plurality of electronic devices, particularly household appliances, and is increasingly applied to computer systems.
[ summary of the invention ]
The invention aims to solve the technical problem of providing a household appliance remote control method based on handheld equipment, which realizes the control of household appliances through intelligent handheld equipment.
The invention solves the technical problems through the following technical scheme: a household appliance remote control method based on a handheld device is provided, and the household appliance remote control method is provided with the handheld device and a conversion device, wherein the conversion device comprises an audio interface module, an audio interface switching circuit, an audio signal shaping and filtering module, a control module, an infrared signal amplification circuit and an infrared transmitting tube; the household appliance remote control method comprises the step of remotely controlling the household appliance by the handheld equipment, and the specific operation method comprises the following steps:
step 10: the handheld device packages a control command group to be sent to the controlled household appliance into a downlink data packet, modulates the downlink data packet into an audio signal and sends the audio signal to the conversion device through an audio port of the handheld device;
step 20: the audio interface module of the conversion device receives the audio signal, then the audio signal reaches the audio signal shaping and filtering module through the audio interface switching circuit for shaping and filtering, and then the audio signal is transmitted to the control module;
step 30: the control module restores the audio signal to obtain control data, and modulates the control data into an infrared signal which can be identified by the controlled household appliance; and then the infrared signal is amplified by the infrared signal amplifying circuit and then is sent to the controlled household appliance by the infrared transmitting tube, thereby realizing the purpose of controlling the household appliance by the handheld device.
Further, the format structure of the downlink data packet is as follows: leading frame header + start byte + data length + data content + end byte; wherein,
guiding a frame header: receiving for the synchronous changing device;
start byte: used for appointing the head of the downlink data packet;
data length: the length of the data part is specified;
data content: the structure of the data to be transmitted is control field + coded content;
end byte: and indicating a downlink data packet end mark.
Further, the step 10 specifically includes: setting the sampling rate of an audio port of the handheld device to be a preset frequency, and forming a downlink data packet according to a positive polarity and a negative polarity, wherein the positive polarity is that a low level of a preset time length t1 is continuously output to represent binary data 0, and a high level of a preset time length t1 is continuously output to represent binary data 1; the negative polarity case is that a high level of a preset time length t1 is continuously output to represent binary data 0, and a low level of a preset time length t1 is continuously output to represent binary data 1; and a serial sending mode is adopted, the sampling frequency is f1 which is 1/t1, a 1-bit start bit, an 8-bit data bit, a 1-bit check bit and a 1-bit stop bit are adopted, and the data in the downlink data packet is played from high to low through an audio port of the handheld device.
Further, the receiving of the audio signal by the audio interface module of the conversion apparatus in step 20 specifically includes: the audio interface module of the conversion device is set to be in a serial receiving mode, the sampling frequency is f2 which is 1/t1, the data is transmitted by adopting the serial mode of a 1-bit start bit, an 8-bit data bit, a 1-bit check bit and a 1-bit stop bit, the start of receiving is confirmed by confirming the start byte of the downlink data packet, and the end of receiving is confirmed by confirming the end byte of the downlink data packet.
Furthermore, the conversion device also comprises an infrared receiving tube, an amplifying and shaping circuit and an infrared signal demodulation module; the household appliance remote control method also comprises a step of learning a control instruction by the handheld device, and the specific operation method comprises the following steps:
step 40: an infrared receiving tube of the conversion device collects infrared control signals of the household appliance, and the infrared control signals are amplified and shaped by the amplifying and shaping circuit, demodulated by the infrared signal demodulation module and then sent to the control module;
step 50: the control module of the conversion device packages the infrared control signal processed in the step 40 into an uplink data packet, modulates the uplink data packet into audio data, and sends the audio data to the handheld device through the audio interface module after the audio data is processed by the audio signal shaping and filtering module and the audio interface switching circuit;
step 60: the microphone of the handheld device collects audio data, the handheld device restores the collected audio data to obtain control data, and the control data is stored at the same time, so that the learning purpose is achieved.
Further, the infrared control frame of the infrared control signal collected by the infrared receiving tube in the step 40 has the following attributes:
k. a frame type description byte;
the carrier part length of the pilot frame;
m. length of the carrierless part of the pilot frame;
n. carrier part length of bit 0;
o. length of carrierless part of bit 0;
p. carrier part length of bit 1;
q. length of carrierless part of bit 1;
r. actual number of bytes occupied by the code;
s. encoding the actual bit length;
t. encoded content.
Further, the format structure of the uplink data packet is as follows: start byte + data length + data content + end byte; wherein,
start byte: specified by one byte;
data length: the length of the data part is specified;
data content: the specific content of the data to be uploaded is defined by a control field of a header byte of the data;
end byte: specified by one byte.
Further, the modulating the uplink data packet into audio data in the step 50, and after the audio data is processed by the audio signal shaping and filtering module and the audio interface switching circuit, the sending of the audio data to the handheld device by the audio interface module specifically includes: setting the sampling rate of an audio interface module of the conversion device to be a preset frequency, adopting a Manchester coded transmission format, adopting a low level of a preset time length t2 to represent a one-bit binary data 0, and adopting a high level of a preset time length t2 to represent a one-bit binary data 1; and a serial sending mode is adopted, the sampling frequency is f2 equal to 1/t2, a 1-bit start bit, an 8-bit data bit, a 1-bit check bit and a 1-bit stop bit are adopted, and data in the uplink data packet is output through an audio interface module of the conversion device, so that the purpose of data transmission is achieved.
Further, the step 60 of acquiring audio data by the microphone of the handheld device specifically includes: setting the sampling rate of the microphone to be f 2-1/t 2, and determining that binary data 0 is received when the low level of the preset time length t2 is acquired; when a high level of a preset time length t2 is acquired, a binary data 1 is considered to be received; a serial receiving mode is adopted, and data are transmitted in a serial mode of a 1-bit start bit, an 8-bit data bit, a 1-bit check bit and a 1-bit stop bit; and confirming the beginning of the reception by the affirmation of the start byte of the uplink data packet, and confirming the end of the reception by the affirmation of the end byte of the uplink data packet.
The invention has the beneficial effects that: the method comprises the steps that control commands of various built-in electric appliances in the intelligent handheld equipment send out modulated audio signals through audio ports of the intelligent handheld equipment, and then the audio signals are converted into infrared control signals which can be recognized by the electric appliances through an external conversion device, so that the method for controlling the household electric appliances through the intelligent handheld equipment is realized; the invention can realize the simultaneous control of a plurality of household appliances with different types and models.
[ description of the drawings ]
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a household appliance remote control system based on a handheld device in the present invention.
Fig. 2 is a schematic structural diagram of the conversion device of the present invention.
[ detailed description ] embodiments
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a handheld device-based household appliance remote control system according to the present invention. A household appliance remote control method based on a handheld device is provided with the handheld device and a conversion device; the conversion device comprises an audio interface module, an audio interface switching circuit, an audio signal shaping and filtering module, a control module, an infrared signal amplifying circuit, an infrared transmitting tube, an infrared receiving tube, an amplifying and shaping circuit and an infrared signal demodulation module.
The household appliance remote control method comprises the step that the handheld equipment remotely controls the household appliance and the handheld equipment to learn a control instruction, and the specific operation method for remotely controlling the household appliance by the handheld equipment comprises the following steps:
step 10: the handheld device packages a control command set to be sent to the controlled household appliance into a downlink data packet, modulates the downlink data packet into an audio signal, and sends the audio signal to the conversion device through an audio port of the handheld device, and the method specifically comprises the following steps: setting the sampling rate of the audio port of the handheld device to a preset frequency, and forming downlink data packets according to a positive polarity and a negative polarity to ensure the compatibility of audio signals output on different handheld devices, wherein the positive polarity condition is that a low level of a preset time length t1 is continuously output to represent binary data 0, and a high level of a preset time length t1 is continuously output to represent binary data 1; the negative polarity condition is that the high level of the preset time length t1 is continuously output to represent binary data 0, and the low level of the preset time length t1 is continuously output to represent binary data 1, so that the relative stability of the high and low levels can be ensured; and a serial sending mode is adopted, the sampling frequency is f1 which is 1/t1, a 1-bit start bit, an 8-bit data bit, a 1-bit check bit and a 1-bit stop bit are adopted, and the data in the downlink data packet is played from high to low through an audio port of the handheld device.
The format structure of the downlink data packet is as follows: leading header (1 byte occupied) + start byte (1 byte occupied) + data length (1 byte occupied) + data content (its bytes are specified by data length) + end byte (1 byte occupied); wherein,
guiding a frame header: receiving for the synchronous changing device;
start byte: used for appointing the head of the downlink data packet;
data length: the length of the data part is specified;
data content: the structure of the data to be transmitted is control field (1 byte) + coding content (different control fields have different lengths);
end byte: and indicating a downlink data packet end mark.
Wherein, the content of the control field specifically is:
(1) sending a key command:
a. fixed code table key data: 0x00 (the control field occupies 1 byte) + key trigger bit (occupies 1 byte) + coding type (occupies 1 byte) + key coding value (occupies 6 bytes) + frequency standard (occupies 1 byte). fixed coding repeated key generation mode is specified by coding type.
b. Learning the key data of the coding table: 0x10 (control field) + code description field (occupying 1 byte) + carrier description field (occupying 12 bytes) + bit field (occupying 1 byte) + code field (number of bytes determined by bit field), wherein the code description field is specifically:
(2) learning a key command:
0x20 (control field) + Command content (1 byte occupied, reserved as 0x00)
(3) Initialization command
0x40 (control field) + device serial number (10 bytes occupied)
(4) Command for obtaining version number of equipment
0x60 (control field) + command content (1 byte occupied, reserved as 0x 00).
Step 20: the audio interface module of the conversion device receives the audio signal, then the audio signal reaches the audio signal shaping and filtering module through the audio interface switching circuit for shaping and filtering, and then the audio signal is transmitted to the control module; the receiving of the audio signal by the audio interface module of the conversion device specifically includes: the audio interface module of the conversion device is set to be in a serial receiving mode, the sampling frequency is f2 which is 1/t1, the data is transmitted by adopting the serial mode of a 1-bit start bit, an 8-bit data bit, a 1-bit check bit and a 1-bit stop bit, the start of receiving is confirmed by confirming the start byte of the downlink data packet, and the end of receiving is confirmed by confirming the end byte of the downlink data packet.
Step 30: the control module restores the audio signal to obtain control data, and modulates the control data into an infrared signal which can be identified by the controlled household appliance; then, infrared signals are amplified by the infrared signal amplifying circuit and then are sent to the controlled household appliance by the infrared transmitting tube, so that the purpose of controlling the household appliance through handheld equipment is achieved; the invention complies with different electrical infrared control signal standards to send such as sharp protocol, TC9012 protocol and the like, supports 60 infrared coding formats in total, and covers 95% of the systems adopting infrared control electric appliances in the market.
The specific operation method of the handheld device learning control instruction is as follows:
step 40: an infrared receiving tube of the conversion device collects infrared control signals of the household appliance, and the infrared control signals are amplified and shaped by the amplifying and shaping circuit, demodulated by the infrared signal demodulation module and then sent to the control module;
wherein, the infrared control frame of the infrared control signal that infrared receiving tube gathered has the following attribute:
a. a frame type description byte;
b. a carrier part length of the pilot frame;
c. a length of a non-carrier part of the pilot frame;
d. carrier part length of bit 0;
e. the length of the carrierless part of bit 0;
f. carrier part length of bit 1;
g. the length of the carrierless part of bit 1;
h. actual number of bytes occupied by the code;
i. encoding the actual bit length;
j. the content of the code.
Because the conversion device generally adopts a singlechip with ultra-low power consumption, the memory resource of the conversion device is very limited, and in order to reduce a large amount of storage space required for simply recording the infrared control signal, the description content for describing the attribute of the infrared control frame is obtained by analyzing the data characteristic of the infrared control signal, so that the CPU resource used for processing the infrared control signal can be greatly reduced.
Step 50: the control module of the conversion device packages the infrared control signal processed in the step 40 into an uplink data packet, modulates the uplink data packet into audio data, and sends the audio data to the handheld device through the audio interface module after the audio data is processed by the audio signal shaping and filtering module and the audio interface switching circuit;
the format structure of the uplink data packet is as follows: a start byte (occupying 1 byte) + data length (occupying 1 byte) + data content (specified by data length) + end byte (occupying 1 byte); wherein,
start byte: specified by one byte;
data length: the length of the data part is specified;
data content: the specific content of the data to be uploaded is defined by a control field of a header byte of the data;
end byte: specified by one byte.
The control field is specifically:
(1) and (3) key coding:
code description field (occupying 1 byte) + carrier description field (occupying 14 bytes) + bit number field (occupying 1 byte) + code field (number of bytes determined by bit number field)
The encoding description field contains the following:
(2) device version:
hardware version (2 byte BCD code) + software version (2 byte BCD code) + sequence number (10 bit BCD code) such as: 01010000000001.
in step 50, modulating the uplink data packet into audio data, and after the audio data is processed by the audio signal shaping and filtering module and the audio interface switching circuit, sending the audio data to the handheld device by the audio interface module specifically includes: setting the sampling rate of an audio interface module of the conversion device to be a preset frequency, adopting a Manchester coded transmission format, adopting a low level of a preset time length t2 to represent a one-bit binary data 0, and adopting a high level of a preset time length t2 to represent a one-bit binary data 1; and a serial sending mode is adopted, the sampling frequency is f2 equal to 1/t2, a 1-bit start bit, an 8-bit data bit, a 1-bit check bit and a 1-bit stop bit are adopted, and data in the uplink data packet is output through an audio interface module of the conversion device, so that the purpose of data transmission is achieved.
Step 60: the microphone of the handheld device collects audio data, the handheld device restores the collected audio data to obtain control data, and the control data is stored at the same time, so that the purpose of learning is achieved, and further learned control commands can be issued to the conversion device through a specified method on the handheld device according to the method for remotely controlling the household appliances by the handheld device so as to control the electric appliances.
Wherein, the microphone of handheld device gathers audio data specifically and is: setting the sampling rate of the microphone to be f 2-1/t 2, and determining that binary data 0 is received when the low level of the preset time length t2 is acquired; when a high level of a preset time length t2 is acquired, a binary data 1 is considered to be received; a serial receiving mode is adopted, and data are transmitted in a serial mode of a 1-bit start bit, an 8-bit data bit, a 1-bit check bit and a 1-bit stop bit; and confirming the beginning of the reception by the affirmation of the start byte of the uplink data packet, and confirming the end of the reception by the affirmation of the end byte of the uplink data packet.
The invention can realize the simultaneous control of a plurality of household appliances of different types and different models, can conveniently update the latest control instruction codes to adapt to the household appliances of new models, and can learn the new control instruction codes through the learning function of the handheld device.
Claims (9)
1. A household appliance remote control method based on handheld equipment is characterized in that: the household appliance remote control method is provided with handheld equipment and a conversion device, wherein the conversion device comprises an audio interface module, an audio interface switching circuit, an audio signal shaping and filtering module, a control module, an infrared signal amplifying circuit and an infrared transmitting tube; the household appliance remote control method comprises the step of remotely controlling the household appliance by the handheld equipment, and the specific operation method comprises the following steps:
step 10: the handheld device packages a control command group to be sent to the controlled household appliance into a downlink data packet, modulates the downlink data packet into an audio signal and sends the audio signal to the conversion device through an audio port of the handheld device;
step 20: the audio interface module of the conversion device receives the audio signal, then the audio signal reaches the audio signal shaping and filtering module through the audio interface switching circuit for shaping and filtering, and then the audio signal is transmitted to the control module;
step 30: the control module restores the audio signal to obtain control data, and modulates the control data into an infrared signal which can be identified by the controlled household appliance; and then the infrared signal is amplified by the infrared signal amplifying circuit and then is sent to the controlled household appliance by the infrared transmitting tube, thereby realizing the purpose of controlling the household appliance by the handheld device.
2. The method for remote control of an electrical appliance based on a handheld device as claimed in claim 1, wherein: the format structure of the downlink data packet is as follows: leading frame header + start byte + data length + data content + end byte; wherein,
guiding a frame header: receiving for the synchronous changing device;
start byte: used for appointing the head of the downlink data packet;
data length: the length of the data part is specified;
data content: the structure of the data to be transmitted is control field + coded content;
end byte: and indicating a downlink data packet end mark.
3. The method for remote control of an electric appliance based on a hand-held device as claimed in claim 1 or 2, wherein: the step 10 specifically comprises: setting the sampling rate of an audio port of the handheld device to be a preset frequency, and forming a downlink data packet according to a positive polarity and a negative polarity, wherein the positive polarity is that a low level of a preset time length t1 is continuously output to represent binary data 0, and a high level of a preset time length t1 is continuously output to represent binary data 1; the negative polarity case is that a high level of a preset time length t1 is continuously output to represent binary data 0, and a low level of a preset time length t1 is continuously output to represent binary data 1; and a serial sending mode is adopted, the sampling frequency is f1 which is 1/t1, a 1-bit start bit, an 8-bit data bit, a 1-bit check bit and a 1-bit stop bit are adopted, and the data in the downlink data packet is played from high to low through an audio port of the handheld device.
4. The method for remote control of an electric appliance based on a hand-held device as claimed in claim 1 or 2, wherein: the receiving of the audio signal by the audio interface module of the conversion apparatus in step 20 is specifically: the audio interface module of the conversion device is set to be in a serial receiving mode, the sampling frequency is f2 which is 1/t1, the data is transmitted by adopting the serial mode of a 1-bit start bit, an 8-bit data bit, a 1-bit check bit and a 1-bit stop bit, the start of receiving is confirmed by confirming the start byte of the downlink data packet, and the end of receiving is confirmed by confirming the end byte of the downlink data packet.
5. The method for remote control of an electrical appliance based on a handheld device as claimed in claim 1, wherein: the conversion device also comprises an infrared receiving tube, an amplifying and shaping circuit and an infrared signal demodulation module; the household appliance remote control method also comprises a step of learning a control instruction by the handheld device, and the specific operation method comprises the following steps:
step 40: an infrared receiving tube of the conversion device collects infrared control signals of the household appliance, and the infrared control signals are amplified and shaped by the amplifying and shaping circuit, demodulated by the infrared signal demodulation module and then sent to the control module;
step 50: the control module of the conversion device packages the infrared control signal processed in the step 40 into an uplink data packet, modulates the uplink data packet into audio data, and sends the audio data to the handheld device through the audio interface module after the audio data is processed by the audio signal shaping and filtering module and the audio interface switching circuit;
step 60: the microphone of the handheld device collects audio data, the handheld device restores the collected audio data to obtain control data, and the control data is stored at the same time, so that the learning purpose is achieved.
6. The method of claim 5, wherein the method comprises: the infrared control frame of the infrared control signal collected by the infrared receiving tube in the step 40 has the following attributes:
a. a frame type description byte;
b. a carrier part length of the pilot frame;
c. a length of a non-carrier part of the pilot frame;
d. carrier part length of bit 0;
e. the length of the carrierless part of bit 0;
f. carrier part length of bit 1;
g. the length of the carrierless part of bit 1;
h. actual number of bytes occupied by the code;
i. encoding the actual bit length;
j. the content of the code.
7. The method of claim 5, wherein the method comprises: the format structure of the uplink data packet is as follows: start byte + data length + data content + end byte; wherein,
start byte: specified by one byte;
data length: the length of the data part is specified;
data content: the specific content of the data to be uploaded is defined by a control field of a header byte of the data;
end byte: specified by one byte.
8. The method of claim 5, wherein the method comprises: modulating the uplink data packet into audio data in the step 50, and after the audio data is processed by the audio signal shaping and filtering module and the audio interface switching circuit, sending the audio data to the handheld device by the audio interface module specifically comprises: setting the sampling rate of an audio interface module of the conversion device to be a preset frequency, adopting a Manchester coded transmission format, adopting a low level of a preset time length t2 to represent a one-bit binary data 0, and adopting a high level of a preset time length t2 to represent a one-bit binary data 1; and a serial sending mode is adopted, the sampling frequency is f2 equal to 1/t2, a 1-bit start bit, an 8-bit data bit, a 1-bit check bit and a 1-bit stop bit are adopted, and data in the uplink data packet is output through an audio interface module of the conversion device, so that the purpose of data transmission is achieved.
9. The method of claim 5, wherein the method comprises: the step 60 of collecting audio data by the microphone of the handheld device specifically includes: setting the sampling rate of the microphone to be f 2-1/t 2, and determining that binary data 0 is received when the low level of the preset time length t2 is acquired; when a high level of a preset time length t2 is acquired, a binary data 1 is considered to be received; a serial receiving mode is adopted, and data are transmitted in a serial mode of a 1-bit start bit, an 8-bit data bit, a 1-bit check bit and a 1-bit stop bit; and confirming the beginning of the reception by the affirmation of the start byte of the uplink data packet, and confirming the end of the reception by the affirmation of the end byte of the uplink data packet.
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| CN106297264A (en) * | 2016-08-31 | 2017-01-04 | 杭州赫智电子科技有限公司 | The coded method of the multiple ultra-red order of a kind of compatibility and system |
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| CN111833584B (en) * | 2019-04-17 | 2022-03-01 | 百度在线网络技术（北京）有限公司 | Device control method, control device, control system, and storage medium |
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