CN116580544B - Long-distance infrared data transmission method, system and terminal - Google Patents
Long-distance infrared data transmission method, system and terminal Download PDFInfo
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- CN116580544B CN116580544B CN202310852605.2A CN202310852605A CN116580544B CN 116580544 B CN116580544 B CN 116580544B CN 202310852605 A CN202310852605 A CN 202310852605A CN 116580544 B CN116580544 B CN 116580544B
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C15/00—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path
- G08C15/02—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path simultaneously, i.e. using frequency division
- G08C15/04—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path simultaneously, i.e. using frequency division the signals being modulated on carrier frequencies
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C2201/00—Transmission systems of control signals via wireless link
- G08C2201/40—Remote control systems using repeaters, converters, gateways
- G08C2201/42—Transmitting or receiving remote control signals via a network
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The application relates to a long-distance infrared data transmission method, a system and a terminal, belonging to the field of communication transmission, wherein the method comprises the following steps: receiving an infrared central control code transmitted by a graphical user interface; analyzing the infrared central control code and generating an infrared emission signal; the infrared central control code comprises target equipment; transmitting the infrared emission signal to a transmitting end, so that the transmitting end transmits the infrared emission signal to the target equipment through a network; the transmitting end and the target equipment are in the same network. Compared with the traditional infrared remote control, the application realizes long-distance transmission of infrared signals and has the effect of being convenient for remotely controlling equipment through infrared emission signals.
Description
Technical Field
The present application relates to the field of signal transmission, and in particular, to a method, a system, and a terminal for long-distance infrared data transmission.
Background
The infrared remote control is a remote control method for transmitting control signals to electrical equipment by using an infrared communication technology, and a user can remotely send instructions to target equipment by using the infrared remote control technology through an infrared remote controller so as to perform various controls such as opening or closing, switching signal sources, changing volume, changing channels or playing media and the like. At present, infrared remote control is widely applied to equipment such as home entertainment, sound equipment, air conditioner, television and the like.
Because the infrared communication technology can not penetrate through the barrier, and when the distance is too far, the infrared signal emitted by the remote controller can be gradually attenuated, namely the infrared radiation energy can be gradually weakened, so that the level of the infrared signal which is insufficient for the receiver to obtain the signal is reached, and the transmission distance of the infrared signal is limited.
With respect to the related art described above, the applicant believes that when the transmission distance of the infrared signal is long, for example, a remote control device is required in a factory, and when a cross-floor control device is required in an enterprise, the existing infrared remote control technology cannot realize the remote control.
Disclosure of Invention
In order to facilitate remote control of equipment, the application provides a long-distance infrared data transmission method, a system and a terminal.
In a first aspect, the present application provides a long-distance infrared data transmission method, which adopts the following technical scheme:
a method of long-range infrared data transmission, comprising:
receiving an infrared central control code transmitted by a graphical user interface; the infrared central control code comprises target equipment and an operation instruction;
analyzing the infrared central control code and generating an infrared emission signal; the infrared central control code comprises target equipment;
transmitting the infrared emission signal to a transmitting end, so that the transmitting end transmits the infrared emission signal to the target equipment through a network; the transmitting end and the target equipment are in the same network.
By adopting the technical scheme, the transmitting end and the target equipment are in the same network, and the transmitting end transmits the infrared emission signal to the target equipment through the network, so that the remote control of the infrared signal is realized, and the limitation of the transmission distance of the infrared signal is avoided. Compared with the traditional infrared remote control, the infrared signal remote control device realizes long-distance transmission of the infrared signal and is convenient for remote control of equipment through the infrared signal.
Optionally, the infrared central control code further includes an operation instruction; the operation instruction comprises carrier frequency, a signal modulation mode and a cycle number;
the analyzing the infrared central control code and generating an infrared emission signal comprises the following steps:
calculating the cycle number according to the carrier frequency;
and generating an infrared emission signal according to the carrier frequency, the signal modulation mode and the cycle number.
Through adopting above-mentioned technical scheme, at first calculate and obtain the timing cycle, secondly produce infrared signal according to carrier frequency, signal modulation mode and cycle number, the user of being convenient for can give the operation instruction through graphical user interface, the operation instruction can produce infrared signal so as to be used for remote control equipment through analyzing, need not the user and directly control equipment such as the remote controller through the sender, effectively prolong the transmission distance of infrared signal to the remote control equipment of being convenient for.
Optionally, the generating an infrared emission signal according to the carrier frequency, the signal modulation mode and the cycle number includes:
resetting a counter of a preset timer, and starting the timer to count the cycle number;
when the cycle number is a preset count value, a timer interrupt signal is generated, and an infrared carrier signal is obtained;
generating an infrared modulation signal according to the signal modulation mode, and superposing the infrared modulation signal on an infrared carrier signal to obtain an infrared emission signal.
By adopting the technical scheme, the infrared emission signal is obtained by the carrier frequency, the signal modulation mode and the cycle number of the timing cycle, so that a user can generate the infrared emission signal to control the target equipment through the operation instruction, thereby being convenient for the user to remotely control the equipment.
Optionally, after the analyzing the infrared central control code and generating an infrared emission signal, the method includes:
detecting the infrared emission signal through an infrared detection device;
judging whether the infrared emission signal is consistent with a preset expected signal or not;
if the voltage values are inconsistent, the voltage value of the power supply at each moment is obtained and recorded;
calculating the change value of the voltage value at each moment and the voltage value at the last moment;
and if the change value is in a preset change range, judging that the power supply voltage of the power supply is stable, and executing the step of transmitting the infrared emission signal to a transmitting end so that the transmitting end transmits the infrared emission signal to the target equipment.
By adopting the technical scheme, after the infrared emission signal is generated, the success rate of successfully transmitting the infrared emission signal to the transmitting end is conveniently improved by comparing whether the infrared emission signal is consistent with the expected signal or not.
Optionally, the sending end sends the infrared emission signal to the target device through a network, including:
the transmitting end transmits the infrared transmitting signal to an infrared transmitter;
the infrared transponder receives the infrared emission signal and encodes the infrared emission signal to obtain an infrared encoding signal;
the infrared transponder transmits the infrared coding signal to the target equipment through a network based on preset control software; the target device is located within the same network as the infrared transponder.
Through adopting above-mentioned technical scheme, the transmitting terminal at first sends infrared emission signal to infrared transmitter, carries out the code by infrared transmitter to infrared emission signal and sends to target equipment again to need not the transmitting terminal and directly control target equipment through infrared remote control signal, effectively prolonged infrared emission signal's transmission distance, the user remote control target equipment of being convenient for.
Optionally, after the transmitting the infrared emission signal to the transmitting end, the method further includes:
judging whether the transmitting end receives the infrared transmitting signal transmitted by the infrared transmitting device or not;
if the infrared emission signal is not received, acquiring a signal transmission distance between the infrared emission device and the transmitting end;
and if the signal transmission distance is greater than a preset distance threshold value, enhancing the output power of the infrared transmitting device.
By adopting the technical scheme, after the infrared emission signal is sent to the sending end, if the sending end does not receive the infrared emission signal, the output power of the infrared emission device is enhanced, so that the success rate of successfully sending the infrared emission signal to the sending end is improved.
Optionally, the distance threshold includes a first distance threshold and a second distance threshold, and the first distance threshold is smaller than the second distance threshold;
if the signal transmission distance is greater than a preset distance threshold, enhancing the output power of the infrared emission device, including:
if the signal transmission distance is larger than the first distance threshold and smaller than or equal to the second distance threshold, enhancing the output power of the infrared emission device to a preset first power;
if the signal transmission distance is greater than the second distance threshold, enhancing the output power of the infrared emission device to a preset second power; the second power is greater than the first power.
By adopting the technical scheme, the corresponding output power is enhanced according to the signal transmission power, so that the success rate of successfully transmitting the infrared emission signal to the transmitting end is further improved.
In a second aspect, the present application provides a long-distance infrared data transmission system, which adopts the following technical scheme:
the long-distance infrared data transmission system comprises a controller, control equipment, a transmitter sending end and a transmitter receiving end;
the control equipment is used for transmitting an infrared central control code to the controller; the infrared central control code comprises target equipment and an operation instruction;
the controller is used for receiving the infrared central control code, analyzing the operation instruction, generating an infrared emission signal and transmitting the infrared emission signal to the transmitting end of the transmitter;
the transmitter sending end is used for receiving the infrared emission signal and sending the infrared emission signal to the transmitter receiving end through a network.
By adopting the technical scheme, the transmitting end and the target equipment are in the same network, so the transmitting end transmits infrared emission signals to the target equipment through the network, thereby realizing remote control of infrared signals and being not limited by the transmission distance of the infrared signals. Compared with the traditional infrared remote control, the infrared signal remote control device realizes long-distance transmission of the infrared signal and is convenient for remote control of equipment through the infrared signal.
Optionally, the system further comprises an infrared transponder;
the transmitter sending end is used for sending the infrared emission signal to the infrared transponder;
the infrared transmitter is used for receiving the infrared emission signal and encoding the infrared emission signal to obtain an infrared encoding signal;
the infrared transmitter is used for transmitting the infrared coding signal to the transmitter receiving end through a network based on preset control software; the transmitter receiving end and the infrared transmitter are located in the same network.
Through adopting above-mentioned technical scheme, the transmitting terminal at first sends infrared emission signal to infrared transmitter, carries out the code by infrared transmitter to infrared emission signal and sends to target equipment again to need not the transmitting terminal and directly control target equipment through infrared remote control signal, effectively prolonged infrared emission signal's transmission distance, the user remote control target equipment of being convenient for.
In a third aspect, the present application provides an intelligent terminal, which adopts the following technical scheme:
the intelligent terminal comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein the long-distance infrared data transmission method is adopted when the processor loads and executes the computer program.
By adopting the technical scheme, the long-distance infrared data transmission method generates the computer program, and the computer program is stored in the memory to be loaded and executed by the processor, so that the intelligent terminal is manufactured according to the memory and the processor, and the intelligent terminal is convenient to use.
In summary, the application has at least one of the following beneficial technical effects:
1. the transmitting end transmits infrared emission signals to the target equipment through a network, remote control of infrared signals is achieved, and the limitation of the transmission distance of the infrared signals is avoided. Compared with the traditional infrared remote control, the infrared signal remote control device realizes long-distance transmission of the infrared signal and is convenient for remote control of equipment through the infrared signal.
2. The transmitting end firstly transmits the infrared emission signal to the infrared transmitter, and then the infrared transmitter encodes the infrared emission signal and transmits the encoded infrared emission signal to the target equipment, so that the target equipment is directly controlled by the infrared remote control signal without the transmitting end, the transmission distance of the infrared emission signal is effectively prolonged, and the target equipment is convenient for a user to remotely control.
3. The user can issue an operation instruction through the graphical user interface, the operation instruction can generate an infrared signal through analysis so as to be used for remote control equipment, the user does not need to directly control the equipment through a transmitting end, namely a remote controller and the like, and the transmission distance of the infrared signal is effectively prolonged, so that the remote control equipment is convenient.
Drawings
Fig. 1 is a schematic flow chart of one implementation of a long-distance infrared data transmission method according to an embodiment of the present application.
Fig. 2 is a flow chart of a method for transmitting long-distance infrared data according to an embodiment of the present application.
Fig. 3 is a flow chart of a method for transmitting long-distance infrared data according to an embodiment of the present application.
Fig. 4 is a flow chart of a method for transmitting long-distance infrared data according to an embodiment of the present application.
Fig. 5 is a schematic flow chart of one implementation of a long-distance infrared data transmission method according to an embodiment of the present application.
Fig. 6 is a flow chart of a method for transmitting long-distance infrared data according to an embodiment of the present application.
Fig. 7 is a schematic flow chart of a method for transmitting long-distance infrared data according to an embodiment of the present application.
Fig. 8 is an overall structure diagram of a long-distance infrared data transmission system according to an embodiment of the present application.
Reference numerals illustrate:
1. a controller; 2. a control device; 3. a transmitter transmitting end; 4. and a transmitter receiving end.
Detailed Description
The application is described in further detail below with reference to fig. 1 to 8.
The embodiment of the application discloses a long-distance infrared data transmission method.
Referring to fig. 1, a long-distance infrared data transmission method includes the steps of:
s101, receiving an infrared central control code transmitted by a graphical user interface; the infrared central control code comprises target equipment and operation instructions.
The graphical user interface is also called GUI interface, is an interface form of man-machine interaction, and presents a software interface in a graphical mode. A user may interact with the computer via an input device such as a mouse, keyboard, etc. The GUI interface enables a user to intuitively understand functions and operation methods of the application program in a graphical manner.
The infrared central control code refers to a control signal transmitted through an infrared signal, and the control signal comprises a designated target device and an operation instruction for the target device. In a graphical user interface, the infrared center control code may be used to control various devices, such as televisions, air conditioners, set top boxes, projectors, and the like. After the user selects the target equipment and the corresponding operation instruction through the operation graphical interface, the graphical user interface sends the corresponding infrared central control code to the MCU microprocessor, so that the target equipment is controlled to complete corresponding operation.
S102, analyzing the infrared central control code and generating an infrared emission signal.
In this embodiment, after receiving the infrared central control code, the MCU firstly obtains the protocol type of the infrared central control code according to the specific bit information in the infrared central control code, and parses out the specific bit data of the infrared central control code, and converts the specific bit data into the corresponding operation instruction.
Specifically, according to the specific bit information in the infrared control code, the protocol type of the infrared central control code can be adopted. Common infrared control code types include NEC protocol, RC5 protocol, SONY protocol, and the like. The following is illustrated by the NEC protocol:
the infrared control code of the NEC protocol typically consists of 32-bit binary digits, including a start bit, an end bit, an 8-bit receiver address code, an inverse of the 8-bit address bit, an 8-bit command code, and an inverse of the command code. If the type of the infrared control code is to be judged according to the specific bit information in the infrared control code, the method can be carried out according to the following steps:
judging whether the start code accords with the standard start code of the NEC protocol or not: the start code of the NEC protocol is specified as 1 9ms high plus 1 4.5ms low.
Judging whether the end code accords with the standard end code of the NEC protocol or not: the end code of the NEC protocol is specified as 1 562.5us low.
Judging whether the address code and the inverse code of the address code are equal or not: if not, the control code is not in accordance with the NEC protocol.
Judging whether the command code and the inverse code of the command code are equal or not: if not, the control code is not in accordance with the NEC protocol.
If the start code, the end code, the address code, the inverse code, the command code and the inverse code of the control code all meet the definition of the NEC protocol, the control code is indicated to be the NEC protocol control code.
Through the judgment, the control code of which protocol type the infrared control code belongs to can be judged according to the specific bit information in the infrared control code.
The specified bit data refers to certain bits of the infrared control code that are used to specify specific information for performing an operation. For example, for a television remote control, the specified bit data may include operation information such as on/off, sound size, channel switch, etc. The MCU microprocessor decodes the infrared control code through the infrared decoding library to analyze the specified data in the infrared central control code, and after decoding, the MCU microprocessor extracts the specified data bits and can be converted into operation instructions.
In addition, if the MCU microprocessor needs to convert the operation instruction into an infrared emission signal, the operation instruction is encoded into the infrared emission signal through the infrared encoding library and is sent to the sending end. The infrared code bank may generate corresponding infrared signals according to different infrared communication protocols, such as NEC protocol, RC5 protocol, etc.
S103, transmitting the infrared emission signal to a transmitting end, so that the transmitting end transmits the infrared emission signal to target equipment through a network; the transmitting end and the target equipment are in the same network.
After generating infrared emission signals, the MCU microprocessor transmits the infrared emission signals to a transmitting end, specifically, the transmitting end refers to infrared transmission equipment such as a remote controller and the like, and the transmitting end is provided with an infrared emitter for emitting the infrared emission signals; the target device refers to a device that receives an infrared signal, such as a television, projector, or the like. Since the sender and the target device are in the same network.
In the first embodiment, the transmitting end may transmit the infrared emission signal to the target device through the intermediate device, specifically, the transmitting end first transmits the infrared emission signal to the intermediate device, where the intermediate device, the target device and the transmitting end are located in the same network, and the intermediate device forwards the infrared emission signal to the target device through the network; in the second embodiment, the remote controller converts the infrared emission signal into an electrical signal, and transmits the electrical signal to the target device through the network, specifically, the target device is directly controlled by the transmitting end through the application program, that is, the target device is provided with the application program for specifying the transmitting end, and the target device can be remotely controlled by the transmitting end of the application program. The two real-time examples can realize the remote communication between the sending end and the target equipment.
The implementation principle of the embodiment is as follows: because the transmitting end and the target equipment are in the same network, the transmitting end transmits infrared emission signals to the target equipment through the network, thereby realizing remote control of infrared signals and being not limited by the transmission distance of the infrared signals. Compared with the traditional infrared remote control, the infrared signal remote control device realizes long-distance transmission of the infrared signal and is convenient for remote control of equipment through the infrared signal.
A detailed description will be given by way of fig. 2 based on one of the implementations of the embodiment shown in fig. 1.
Referring to FIG. 2, the infrared central control code also includes an operating instruction; the operation instruction comprises carrier frequency, signal modulation mode and cycle number;
analyzing the infrared central control code and generating an infrared emission signal, comprising the following steps:
s201, calculating the cycle number according to the carrier frequency.
In the remote controller, the operation instruction is generally transmitted in the form of infrared rays. Wherein the carrier frequency is a tangible wave in the infrared signal. The remote control emits infrared light through an LED or LD that flashes at a certain frequency and amplitude, producing a carrier frequency. In communication between the remote control and the target device, the carrier frequency needs to be kept consistent. Typically, the carrier frequency is between 30kHz and 60 kHz. Signal modulation is the process of converting a digital signal into a physical signal that can be transmitted. For example, in a remote control, a digital signal is generated by pressing a button on the remote control, which requires signal modulation to be converted to an infrared signal. Common signal modulation schemes include PWM, PPM, PAM, etc. The number of cycles represents the time required for one complete cycle of the signal wave during the conversion of the digital signal into an infrared emission signal. In general, the value of the cycle number is determined by the carrier frequency and the signal modulation scheme.
After the signal modulation scheme is known, the number of cycles can be calculated by the carrier frequency. The cycle number calculation formula of the common signal modulation mode is as follows:
PWM modulation method for calculating cycle number
Cycle number = 1/(2 x carrier frequency);
PPM modulation method for calculating cycle number
Cycle number = carrier frequency/digital data rate;
PAM modulation method for calculating cycle number
Cycle number = digital data rate/carrier frequency;
where digital data rate refers to the number of bits transmitted per second in a digital signal. In the transmitting end, the digital signal refers to a signal transmitted to the target device when a button on the transmitting end is pressed. In the transmitting end, the digital data rate is typically expressed in units of baud (baud). Baud represents the number of bits transmitted per second in a digital signal.
S202, generating infrared emission signals according to carrier frequency, signal modulation modes and cycle numbers.
The MCU microprocessor firstly generates a digital signal according to a signal modulation mode and a cycle number, then converts the digital signal into an analog electric signal, and drives an LED or an LD at a transmitting end with the analog electric signal, wherein the LED or the LD can generate carrier frequency and modulate the analog signal; due to the carrier frequency and signal modulation, this analog infrared signal will be converted into corresponding infrared light pulses, i.e. infrared emission signals, which represent the transmitted digital signal.
It should be noted that after the carrier frequency, the signal modulation mode and the period number are known, the signal is first buffered in a queue for generating an infrared emission signal, and then is invoked when the infrared emission signal is generated.
According to the long-distance infrared data transmission method provided by the embodiment, the timing period is calculated, the infrared signal is generated according to the carrier frequency, the signal modulation mode and the period number, the user can conveniently issue the operation instruction through the graphical user interface, the operation instruction can generate the infrared signal through analysis so as to be used for remote control equipment, the user does not need to directly control the equipment through a transmitting end, namely a remote controller and the like, the transmission distance of the infrared signal is effectively prolonged, and therefore the remote control equipment is facilitated.
A detailed description will be given by way of fig. 3 based on one of the implementations of the embodiment shown in fig. 1.
Referring to fig. 3, generating an infrared emission signal according to a carrier frequency, a signal modulation scheme and a cycle number includes the steps of:
s301, resetting a counter of a preset timer, and starting the timer to count the number of cycles.
The timer is a hardware module integrated inside the MCU microprocessor. The timer is comprised of one or more counters and control logic. The counter may count according to a predetermined clock signal, or count after dividing the clock signal by a clock divider inside the timer, and then output the count result for external control. Timers are used in a variety of applications requiring time counting, generating a timer interrupt, etc., including infrared communications, input capture, output comparison, ADC acquisition triggering, etc.
And resetting a counter of a preset timer, and counting the number of cycles from zero for accurately measuring the number of cycles.
S302, when the cycle number is a preset count value, a timer interrupt signal is generated, and an infrared carrier signal is obtained.
In processing an infrared signal, a signal cycle refers to a complete waveform of an infrared signal consisting of a rising edge and a falling edge, and a timer is required to measure the number of cycles of the signal in order to transmit the correct number of signal cycles.
When the timer starts, it increments the counter every clock cycle, with an initial value of 0. After a specified number of cycles has been reached, the timer will issue an interrupt signal indicating that a specified number of signal cycles have been sent.
The infrared carrier signal is light wave emitted by an LED or an LD at the transmitting end, the carrier frequency is usually 30 kHz-60 kHz, and the carrier signal consists of periodic light signals. The transmitting end is provided with an infrared transmitter, the MCU microprocessor is electrically connected with the infrared transmitter, the infrared transmitter is used for transmitting infrared transmitting signals through the LEDs or the LDs, the MCU microprocessor is also provided with an infrared transmitting program, the infrared transmitting program generates corresponding infrared carrier signals according to preset carrier frequency, signal modulation mode and cycle number and transmits the corresponding infrared carrier signals to the infrared transmitter, and the infrared transmitter can convert the infrared carrier signals into infrared rays, namely infrared transmitting signals and transmit the infrared carrier signals.
S303, generating an infrared modulation signal according to the signal modulation mode, and superposing the infrared modulation signal on the infrared carrier signal to obtain an infrared emission signal.
The received operation instructions may be converted into Pulse Width Modulation (PWM) or Pulse Position Modulation (PPM) signals according to a signal modulation scheme to generate infrared modulation signals. The frequency of the infrared modulation signal is equal to that of the infrared carrier signal, and the infrared modulation signal is superimposed on the infrared carrier signal to obtain an infrared emission signal.
According to the long-distance infrared data transmission method provided by the embodiment, the infrared emission signal is obtained through the carrier frequency, the signal modulation mode and the period number of the timing period, so that a user can generate the infrared emission signal through an operation instruction to control the target equipment, and the user can conveniently control the equipment remotely.
A detailed description will be given by way of fig. 4 based on one of the implementations of the embodiment shown in fig. 1.
Referring to fig. 4, after resolving the infrared central control code and generating an infrared emission signal, the method comprises the following steps:
s401, detecting infrared emission signals through an infrared detection device.
In this embodiment, the infrared detection device refers to an oscilloscope or an infrared detector, and is used for detecting an infrared emission signal.
S402, judging whether the infrared emission signal is consistent with a preset expected signal.
The expected signal refers to an ideal signal that is an infrared emission signal input in advance, and the waveform and frequency of the infrared emission signal can be detected using an oscilloscope to determine whether it coincides with the expected signal. Specifically, the oscilloscope is connected to the sending end of the infrared emitter at the sending end, the triggering mode of the oscilloscope is set to be external triggering, and an expected signal is sent to the infrared emitter. After the oscilloscope is triggered, it can check whether the observed infrared signal waveform is correct or not, and whether the frequency of the infrared signal waveform is consistent with the expected carrier frequency or not. If the waveform and frequency are consistent with the desired signal, then the infrared emission signal is determined to be consistent with the desired signal.
The infrared detector is used for judging whether the infrared emission signal is consistent with a preset expected signal or not by detecting whether the infrared emission signal reaches the target equipment or not. Specifically, an infrared detector is first placed near a receiving device for an intended signal and the intended signal is transmitted, and if the infrared detector detects a signal from an infrared transmitter and the waveform and frequency of the signal coincide with the intended signal, the infrared transmission signal is determined to coincide with the intended signal.
And S403, if the voltage values are inconsistent, acquiring and recording the voltage value of the power supply at each moment.
If the infrared emission signal is determined to be consistent with the expected signal, step S103 is performed.
If the infrared emission signal is judged to be inconsistent with the expected signal, the transmission of the infrared emission signal to the transmitting end is likely to fail, and at the moment, the voltage value of the power supply at each moment is acquired through the oscilloscope so as to judge whether the power supply of the infrared emitter connected with the MCU is stable or not.
S404, calculating the change value of the voltage value at each moment and the voltage value at the last moment.
If the voltage value at time t1 is a and the voltage value at time t2 is b, the change value of the voltage values at time t2 and time t1 is b-a.
And S405, if the change value is in the preset change range, judging that the power supply voltage of the power supply is stable, and executing the step of transmitting an infrared emission signal to the transmitting end so that the transmitting end transmits the infrared emission signal to the target equipment.
The variation range is preset for human, if the variation range is between 0.2V and 1V, the variation value is 0.5V, and the variation value is within the variation range, the stable power supply voltage of the power supply can be determined, and step S103 is executed.
According to the long-distance infrared data transmission method provided by the embodiment, after the infrared emission signal is generated, whether the infrared emission signal is consistent with the expected signal or not is compared, so that the success rate of successfully transmitting the infrared emission signal to the transmitting end is improved conveniently.
A detailed description will be given by way of fig. 5 based on one of the implementations of the embodiment shown in fig. 1.
Referring to fig. 5, the transmitting end transmits an infrared emission signal to a target device through a network, including the steps of:
s501, the transmitting end transmits an infrared transmitting signal to the infrared transponder.
Specifically, the transmitting end transmits an infrared transmitting signal to the infrared transponder through the built-in infrared transmitter. An infrared transponder is an infrared technology device that converts infrared signals into electrical signals for transmission to a target device.
S502, the infrared transmitter receives the infrared emission signal and encodes the infrared emission signal to obtain an infrared encoding signal.
The infrared transponder consists of two parts: a transmitter and a receiver. The transmitter is used for receiving infrared emission signals sent by a transmitting end such as a television remote controller, an audio remote controller and the like, converting the infrared emission signals into electric signals and transmitting the electric signals to the receiver.
When the electric signal of the infrared emission signal is transmitted to the receiver, the receiver encodes the infrared emission signal according to the encoding format used by the transmitting end and transmits the infrared emission signal to the target device.
S503, the infrared transmitter transmits an infrared coding signal to target equipment through a network based on preset control software; the target device is located within the same network as the infrared transponder.
Control software refers to a software program provided with the infrared transponder for interacting with other devices and controlling the operation of the infrared transponder. When the infrared code signal is sent to the target device through the network, the code signal can be converted into a data packet through a network protocol such as TCP, IP and the like, and the data packet is transmitted through the network and finally sent to the target device.
The infrared transmitter is used for transmitting infrared transmitting signals to target equipment which cannot directly receive infrared signals, such as televisions of partition walls.
According to the long-distance infrared data transmission method provided by the embodiment, the transmitting end firstly transmits the infrared transmitting signal to the infrared transmitter, and then the infrared transmitter encodes the infrared transmitting signal and transmits the infrared transmitting signal to the target equipment, so that the transmitting end is not required to directly control the target equipment through the infrared remote control signal, the transmission distance of the infrared transmitting signal is effectively prolonged, and a user can conveniently and remotely control the target equipment.
A detailed description will be given by way of fig. 6 based on one of the implementations of the embodiment shown in fig. 1.
Referring to fig. 6, after transmitting the infrared emission signal to the transmitting end, the method further includes the steps of:
s601, judging whether the transmitting end receives an infrared transmitting signal transmitted by the infrared transmitting device.
The infrared emission device refers to an infrared emission device, if the sending end receives the infrared emission signal, the sending end responds to the infrared emission signal, such as a flashing indicator lamp, etc., so if the sending end does not respond to the infrared emission signal, the sending end does not receive the infrared emission signal emitted by the infrared emission device.
S602, if the infrared emission signal is not received, acquiring the signal transmission distance between the infrared emission device and the sending end.
If the transmitting end does not receive the infrared transmitting signal, the signal transmission distance between the infrared transmitting device and the transmitting end can be calculated according to a time measurement mode, namely, the signal transmission distance between the infrared transmitting device and the transmitting end is calculated through the transmission time and the light speed of the infrared transmitting signal. Specifically, firstly, the time difference Δt between the transmission and the reception of the infrared emission signal is obtained, and the signal transmission distance l=c×Δt can be calculated according to the time difference Δt and the light speed C.
If the transmitting end receives the infrared emission signal, the MCU microprocessor does not act.
S603, if the signal transmission distance is larger than a preset distance threshold value, the output power of the infrared emission device is enhanced.
The distance threshold is artificially preset, if the signal transmission distance is greater than the distance threshold, the fact that the transmitting end does not receive the infrared transmitting signal possibly is caused by the fact that the distance is far is indicated, and at the moment, the output power of the infrared transmitting device is artificially enhanced through an infrared transmitting program.
According to the long-distance infrared data transmission method provided by the embodiment, after the infrared emission signal is sent to the sending end, if the sending end does not receive the infrared emission signal, the output power of the infrared emission device is enhanced, so that the success rate of successfully sending the infrared emission signal to the sending end is improved.
A detailed description will be given by way of fig. 7 based on one of the implementations of the embodiment shown in fig. 1.
Referring to fig. 7, the distance threshold includes a first distance threshold and a second distance threshold, the first distance threshold being less than the second distance threshold;
if the signal transmission distance is greater than the preset distance threshold, the output power of the infrared emission device is enhanced, and the method comprises the following steps:
s701, if the signal transmission distance is greater than the first distance threshold and less than or equal to the second distance threshold, the output power of the infrared emission device is enhanced to a preset first power.
S702, if the signal transmission distance is greater than a second distance threshold, enhancing the output power of the infrared emission device to a preset second power; the second power is greater than the first power.
If the signal transmission distance is greater than the first distance threshold and less than or equal to the second distance threshold, enhancing the output power of the infrared emission device to the first power; if the signal transmission distance is greater than the second distance threshold, the output power of the infrared emission device is enhanced to the second power, wherein the first power and the second power are input in advance by people, and the power of the infrared emission device is determined through the signal transmission distance, so that energy conservation is facilitated.
According to the long-distance infrared data transmission method provided by the embodiment, corresponding output power is enhanced according to signal transmission power, so that the success rate of successfully transmitting infrared emission signals to a transmitting end is further improved.
The embodiment of the application also discloses a long-distance infrared data transmission system.
Referring to fig. 8, a long-distance infrared data transmission system includes a controller, a control device, a transmitter transmitting end and a transmitter receiving end. Wherein the controller is an MCU microprocessor; the control device refers to an intelligent device for sending instructions, such as a mobile phone, a tablet, etc. Wherein the control device is provided with a GUI interface; the transmitter transmitting end refers to a device for transmitting infrared signals, such as a remote controller, etc.; the transmitter receiving end refers to a device that receives infrared signals, such as a television, projector, etc. The controller and the control equipment can be connected through wires or can be connected in a wireless way; the controller is connected with the transmitting end of the transmitter through an electric wire; the transmitter sending end is in wireless connection with the transmitter receiving end.
Specifically, the data transfer process from the GUI interface to the MCU microprocessor is as follows:
the Web page passes data to the MCU microprocessor using a post request through the public gateway interface (CGI Common Gateway Interface). The public gateway interface is a tool for information transmission between the HTTP server and other equipment installation programs.
The control equipment is used for transmitting the infrared central control code to the controller; the infrared central control code comprises target equipment and an operation instruction; the infrared central control code is manually input through the GUI interface.
The controller is used for receiving the infrared central control code, analyzing the operation instruction, generating an infrared emission signal and transmitting the infrared emission signal to the transmitter sending end;
the transmitter sending end is used for receiving the infrared emission signal and sending the infrared emission signal to the transmitter receiving end through a network.
The system also comprises an infrared transponder;
the transmitter sending end is used for sending infrared emission signals to the infrared transmitter;
the infrared transmitter is used for receiving the infrared emission signal and encoding the infrared emission signal to obtain an infrared encoding signal;
the infrared transmitter is used for transmitting an infrared coding signal to a transmitter receiving end through a network based on preset control software; the transmitter receiving end and the infrared transmitter are positioned in the same network.
The implementation principle of the long-distance infrared data transmission system of the embodiment of the application is as follows: because the transmitting end and the target equipment are in the same network, the transmitting end transmits infrared emission signals to the target equipment through the network, thereby realizing remote control of infrared signals and being not limited by the transmission distance of the infrared signals. Compared with the traditional infrared remote control, the infrared signal remote control device realizes long-distance transmission of the infrared signal and is convenient for remote control of equipment through the infrared signal.
The embodiment of the application also discloses an intelligent terminal which comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein the long-distance infrared data transmission method in the embodiment is adopted when the processor executes the computer program.
The intelligent terminal may adopt a computer device such as a desktop computer, a notebook computer or a cloud server, and the intelligent terminal includes, but is not limited to, a processor and a memory, for example, the intelligent terminal may further include an input/output device, a network access device, a bus, and the like.
The processor may be a Central Processing Unit (CPU), or of course, according to actual use, other general purpose processors, digital Signal Processors (DSP), application Specific Integrated Circuits (ASIC), ready-made programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., and the general purpose processor may be a microprocessor or any conventional processor, etc., which is not limited in this respect.
The memory may be an internal storage unit of the intelligent terminal, for example, a hard disk or a memory of the intelligent terminal, or an external storage device of the intelligent terminal, for example, a plug-in hard disk, a Smart Memory Card (SMC), a secure digital card (SD) or a flash memory card (FC) provided on the intelligent terminal, or the like, and may be a combination of the internal storage unit of the intelligent terminal and the external storage device, where the memory is used to store a computer program and other programs and data required by the intelligent terminal, and the memory may be used to temporarily store data that has been output or is to be output, which is not limited by the present application.
The long-distance infrared data transmission method in the embodiment is stored in the memory of the intelligent terminal through the intelligent terminal, and is loaded and executed on the processor of the intelligent terminal, so that the long-distance infrared data transmission method is convenient to use.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (6)
1. A method for long-range infrared data transmission, comprising:
receiving an infrared central control code transmitted by a graphical user interface;
analyzing the infrared central control code and generating an infrared emission signal; the infrared central control code comprises target equipment;
transmitting the infrared emission signal to a transmitting end, so that the transmitting end transmits the infrared emission signal to the target equipment through a network; the sending end and the target equipment are in the same network;
wherein the infrared central control code further comprises an operation instruction; the operation instruction comprises carrier frequency, a signal modulation mode and a cycle number;
the analyzing the infrared central control code and generating an infrared emission signal comprises the following steps:
calculating the cycle number according to the carrier frequency;
generating an infrared emission signal according to the carrier frequency, the signal modulation mode and the cycle number;
wherein, according to the carrier frequency, the signal modulation mode and the cycle number, the generating infrared emission signal includes:
resetting a counter of a preset timer, and starting the timer to count the cycle number;
when the cycle number is a preset count value, a timer interrupt signal is generated, and an infrared carrier signal is obtained;
generating an infrared modulation signal according to the signal modulation mode, and superposing the infrared modulation signal on an infrared carrier signal to obtain an infrared emission signal;
after the infrared central control code is analyzed and the infrared emission signal is generated, the method comprises the following steps:
detecting the infrared emission signal through an infrared detection device;
judging whether the infrared emission signal is consistent with a preset expected signal or not;
if the voltage values are inconsistent, the voltage value of the power supply at each moment is obtained and recorded;
calculating the change value of the voltage value at each moment and the voltage value at the last moment;
if the change value is in a preset change range, judging that the power supply voltage of the power supply is stable, and executing the step of transmitting the infrared emission signal to a transmitting end so that the transmitting end transmits the infrared emission signal to the target equipment;
the sending end sends the infrared emission signal to the target device through a network, and the method comprises the following steps:
the transmitting end transmits the infrared transmitting signal to an infrared transmitter;
the infrared transponder receives the infrared emission signal and encodes the infrared emission signal to obtain an infrared encoding signal;
the infrared transponder transmits the infrared coding signal to the target equipment through a network based on preset control software; the target device is located within the same network as the infrared transponder.
2. The method for transmitting long-distance infrared data as set forth in claim 1, further comprising, after said transmitting said infrared emission signal to a transmitting end:
judging whether the transmitting end receives the infrared transmitting signal transmitted by the infrared transmitting device or not;
if the infrared emission signal is not received, acquiring a signal transmission distance between the infrared emission device and the transmitting end;
and if the signal transmission distance is greater than a preset distance threshold value, enhancing the output power of the infrared transmitting device.
3. The method of long-range infrared data transmission of claim 2, wherein the range threshold comprises a first range threshold and a second range threshold, the first range threshold being less than the second range threshold;
if the signal transmission distance is greater than a preset distance threshold, enhancing the output power of the infrared emission device, including:
if the signal transmission distance is larger than the first distance threshold and smaller than or equal to the second distance threshold, enhancing the output power of the infrared emission device to a preset first power;
if the signal transmission distance is greater than the second distance threshold, enhancing the output power of the infrared emission device to a preset second power; the second power is greater than the first power.
4. The long-distance infrared data transmission system is characterized in that: the system comprises a controller, control equipment, a transmitter sending end and a transmitter receiving end;
the control equipment is used for transmitting an infrared central control code to the controller; the infrared central control code comprises target equipment and an operation instruction;
the controller is used for receiving the infrared central control code, analyzing the operation instruction, generating an infrared emission signal and transmitting the infrared emission signal to the transmitting end of the transmitter;
the transmitter sending end is used for receiving the infrared emission signal and sending the infrared emission signal to the transmitter receiving end through a network;
the operation instruction comprises carrier frequency, a signal modulation mode and a cycle number;
the controller is further configured to calculate the cycle number according to the carrier frequency;
generating an infrared emission signal according to the carrier frequency, the signal modulation mode and the cycle number;
the controller is further used for resetting a counter of a preset timer and starting the timer to count the cycle number;
when the cycle number is a preset count value, a timer interrupt signal is generated, and an infrared carrier signal is obtained;
generating an infrared modulation signal according to the signal modulation mode, and superposing the infrared modulation signal on an infrared carrier signal to obtain an infrared emission signal;
the controller is also used for detecting the infrared emission signal through an infrared detection device;
judging whether the infrared emission signal is consistent with a preset expected signal or not;
if the voltage values are inconsistent, the voltage value of the power supply at each moment is obtained and recorded;
calculating the change value of the voltage value at each moment and the voltage value at the last moment;
if the change value is in a preset change range, judging that the power supply voltage of the power supply is stable, and executing the step of transmitting the infrared emission signal to a transmitting end so that the transmitting end transmits the infrared emission signal to the target equipment;
the transmitter sending end is also used for sending the infrared emission signal to an infrared transmitter;
the infrared transponder receives the infrared emission signal and encodes the infrared emission signal to obtain an infrared encoding signal;
the infrared transponder transmits the infrared coding signal to the target equipment through a network based on preset control software; the target device is located within the same network as the infrared transponder.
5. The long-range infrared data transmission system of claim 4, wherein: the transmitter sending end is used for sending the infrared emission signal to the infrared transponder;
the infrared transmitter is used for receiving the infrared emission signal and encoding the infrared emission signal to obtain an infrared encoding signal;
the infrared transmitter is used for transmitting the infrared coding signal to the transmitter receiving end through a network based on preset control software; the transmitter receiving end and the infrared transmitter are located in the same network.
6. A smart terminal comprising a memory, a processor and a computer program stored in the memory and capable of running on the processor, characterized in that the method according to any of claims 1 to 3 is used when the computer program is loaded and executed by the processor.
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