CN107274658B - Ultrahigh-speed infrared wireless information transfer method - Google Patents
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- CN107274658B CN107274658B CN201710455321.4A CN201710455321A CN107274658B CN 107274658 B CN107274658 B CN 107274658B CN 201710455321 A CN201710455321 A CN 201710455321A CN 107274658 B CN107274658 B CN 107274658B
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- 238000003199 nucleic acid amplification method Methods 0.000 claims description 13
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Abstract
The invention discloses an ultra-high speed infrared wireless information transfer method, which is based on the fact that contact signals are output rapidly and the existing infrared communication mode is difficult to meet the system requirements.
Description
Technical Field
The invention relates to a wireless information transmission method.
Background
In some applications, the traditional wired connection method is difficult to develop due to the physical location and the working mode, and a wireless mode is required for data transmission. In the process of wireless transmission, the current common wireless forms are many, such as infrared, 433M communication, Bluetooth, wifi, zigbee and the like, the forms are various, especially the infrared form, and the application is extremely wide in the fields of household appliances and the like due to low price and simple realization. However, for ordinary infrared, most of the infrared adopts 38K transmission and follows a certain protocol, and existing infrared communication includes two ways: PWM (pulse width modulation) and PPM (pulse position modulation). The two forms of coding are represented by RC-5, RC-6 and future RC-7 of NEC and PHILIPS, respectively. PWM (pulse width modulation): the duty cycles at which the infrared carrier is emitted represent "0" and "1". To save energy, the time for emitting the infrared carrier is generally fixed, and the duty cycle is changed by changing the time for not emitting the carrier. For example, a common television remote controller uses NEC upd6121, wherein '0' is carrier wave transmission for 0.56ms, and is not transmitted for 0.56 ms; the '1' is that the carrier wave is transmitted for 0.56ms and is not transmitted for 1.68 ms; in addition, for the convenience of decoding, the pilot code of upd6121 is transmitted for carrier wave for 9ms, and is not transmitted for 4.5 ms. The total code length of upd6121 is 108 ms.
This is not the case for all encoders, such as TC9012 in TOSHIBA, whose preamble is 4.5ms for carrier transmission and 4.5ms for no transmission, whose "0" is 0.52ms for carrier transmission and 0.52ms for no transmission, and whose "1" is 0.52ms for carrier transmission and 1.04ms for transmission. PPM (pulse position modulation): "0" and "1" are expressed in terms of the position of the transmission carrier. The carrier from transmitting to not transmitting is "0", and the carrier from not transmitting to transmitting is "1". The time for transmitting the carrier wave and the time for not transmitting the carrier wave are the same and are both 0.68ms, namely the time of each bit is fixed. In view of the above, it can be seen that the transmission of a signal in the infrared is on the order of milliseconds (ms), which is not suitable for some high-speed applications.
Disclosure of Invention
The invention provides a super-high-speed infrared wireless information transfer method which can send out signals in a very short time.
The technical scheme provided by the invention is as follows:
an ultra-high speed infrared wireless information transmission method adopts an infrared transmitting end and an infrared receiving end, wherein a wireless signal transmitting circuit board is arranged in the infrared transmitting end, the wireless signal transmitting circuit board is arranged in a 6-surface form, each surface is provided with an infrared transmitting circuit, a wireless receiving circuit board is arranged in the receiving end, the wireless receiving circuit board comprises an infrared signal acquisition module, a signal amplification module and a signal comparison and shaping module, the infrared signal acquisition module comprises an infrared receiving tube D2, a resistor R3 and a resistor R4, the cathode of the infrared receiving tube D2 is connected with 5V voltage and is connected with a resistor R3 in parallel, the infrared receiving tube D2 and the resistor R3 are connected with a resistor R4 in series, the other end of the resistor R4 is grounded, a signal received by the infrared receiving tube D2 is output to a subsequent conditioning circuit through the anode of the signal output port SignalOut 483 6 of the module, the signal amplification module comprises, a capacitor C1, a capacitor C2, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11 and a resistor R12, wherein 4 ports of the operational amplifier LM324N are connected with 5V voltage, 11 ports are grounded to provide power for the operational amplifier, a signal output end SignalOut1 of the infrared signal acquisition module is a signal input end SignalIn1 of the signal amplification module, SignalIn1 is connected with the capacitor C1 in series to divide a direct current signal in the signal, a port 2 of the operational amplifier is connected with a resistor R5, the other end of the resistor R5 is connected with the capacitor C1 in series to complete signal input to an inverting input port 2 of the operational amplifier, the inverting input port 2 of the operational amplifier is connected with an output port 1 in parallel with the resistor R6, resistors R9 and R8 are connected between the voltage 6865V and the ground to complete voltage division, a common node of the resistors R7 and R8 is connected with an input port 3 of the operational amplifier in series to provide a reference input port 3, the direct current signal in the signal is divided, a port 6 of the operational amplifier is connected with a resistor R9, the other end of a resistor R9 is connected with a capacitor C2 in series, the signal is input to an inverting input port 6 of the operational amplifier, an output port 7 of the inverting input port 6 of the operational amplifier is connected with a resistor R10 in parallel, resistors R11 and R12 are connected between voltage 5V and the ground in parallel to divide the voltage, a common node of the resistors R11 and R12 is connected to a positive input port 5 of the operational amplifier to provide reference voltage for the operational amplifier, an output port 7 of the operational amplifier is connected with a signal output port SignalOut2 to provide signals for a following circuit; the signal comparison and shaping module comprises a voltage comparator LM393P, a resistor R13, a resistor R14 and a resistor R15, a port 8 of the voltage comparator is connected with a voltage of 5V, a port 4 of the voltage comparator is grounded, an infrared signal output port SignalOut2 of the signal amplification module is input from a signal input end SignalIn2 of the signal comparison and shaping module and is connected to an inverted input port 2 of the voltage comparator, a resistor R13 and a resistor R14 are connected in series and in parallel between the voltage of 5V and the ground, a common port of the resistor R13 and a resistor R14 is connected to a positive input port 3 of the voltage comparator, a resistor R15 is connected in parallel between the port 3 and an output port 1 of the voltage comparator, and an output port 1 of the voltage comparator is connected with a signal output;
when the wireless signal transmitting circuit receives the contact signal, the wireless signal transmitting circuit is waken up quickly, the wakening time is 2-3us, then the processor generates a PWM signal to drive the infrared transmitting tube, the infrared transmitting tube transmits a signal with a certain frequency,
signaling begins with a high level, a high level duty cycle of 1/3,
the information to be transmitted in the invention is as follows:
1) contact opening signal transmission
The transmitting terminal enters a low power consumption state at ordinary times after being powered by a battery and is used for saving electric quantity, the contact is in a normally closed state, and the transmitting terminal is in a high-level state at ordinary times according to the electric quantity connection method of the transmitting terminal; when the thimble of the equipment is touched, the state of the contact is changed, the processor in the transmitting end receives the falling edge signal transmitted by the contact, the processor is rapidly awakened to enter an active state, the transmitting end sends out a specific waveform to the 6-path infrared transmitting tube,
for effective differentiation, the contact opening signal is defined as: a PWM waveform with a frequency of 120khz, a duty cycle of 30%,
the receiving end processor amplifies the infrared received signal, converts the analog signal into high and low level signals,
the receiving end receives and processes the signal, and the general idea is to measure the interval time of two rising edges, and the processing process is as follows:
after obtaining the effective pulse signal, calculating the pulse frequency, and judging whether the frequency accords with a defined frequency interval, if so, handing over to a rear-stage mechanism, otherwise, discarding;
to improve the reliability of reception, the frequency of the received signal is defined as 100kz, +/-2 khz;
2) normal signal transmission of electric quantity
After the contact signal is transmitted, transmitting an electric quantity normal signal before the next contact signal arrives;
the normal signal frequency of the electric quantity is defined as: 110khz +/-2 khz;
3) and (3) transferring a low-power state signal: frequency is defined as 100khz +/-2 khz;
4) and (3) transmitting an electric quantity extremely-low state signal: the frequency is defined as 90khz +/-2 khz.
The infrared transmitting circuit comprises a contact signal capturing circuit and a low-power-consumption processor, the low-power-consumption processor is awakened quickly when the contact signal is received, the awakening time is 2-3us, then the processor generates a PWM signal to drive the infrared transmitting tube, the infrared transmitting tube transmits a signal with a certain frequency, in order to meet the requirement of quick communication, the PWM power is limited between 100K and 150K, after the contact signal is transmitted, the processor transmits electric quantity information after a certain interval time, and then the infrared transmitting circuit enters a low-power-consumption state.
The ultra-high speed infrared wireless information transfer method is based on that contact signals are output quickly, the existing infrared communication mode is difficult to meet the requirements of a system, therefore, compared with the prior art, the ultra-high speed infrared wireless information transfer method selects information of high-speed infrared signals as transmission, utilizes a circuit to complete receiving and processing of the infrared signals, can ensure that the infrared signals are stable within a certain distance, and can send the signals within a very short time.
Drawings
FIG. 1 is a schematic diagram of the operation of the apparatus of the present invention.
Fig. 2 is a schematic structural diagram of a wireless signal transmitting circuit board according to the present invention.
Fig. 3 is a schematic diagram of a wireless signal transmitting circuit board structure according to the present invention.
Fig. 4 is a schematic view of the expanded structure of the wireless signal transmitting circuit board of the present invention.
Fig. 5 is a schematic diagram of a wireless signal transmitting circuit according to the present invention.
Fig. 6 is a schematic diagram of a wireless signal receiving circuit according to the present invention.
Fig. 7 is a schematic diagram of an infrared signal acquisition module according to the present invention.
Fig. 8 is a schematic diagram of a signal amplification module of the present invention.
Fig. 9 is a schematic diagram of a signal comparison and shaping module according to the present invention.
Fig. 10 is a flow chart of pulse signal identification determination of the present invention.
Detailed Description
The present invention is described in further detail below with reference to the attached drawings.
The left side is the infrared emitting end and the right side is the infrared receiving end as shown in fig. 1. The infrared transmitting end on the left side is powered by a battery, when the thimble at the bottom of the left side is touched, the infrared transmitting end needs to transmit a touch signal out of a state quickly, and when the infrared receiving end receives the signal, the infrared receiving end can respond in time. The infrared transmitting end is internally provided with a wireless signal transmitting circuit board and a battery. The structure of the infrared emission end of the circuit board is shown in the following figures 2 and 3. Contain transparent region in the shell of transmitting terminal, adopt ya keli processing to form, the black part of position left side transmitting terminal in figure 1, because equipment can take place to rotate, there is the unsettled condition in infrared emission position, consequently, the circuit board of transmitting terminal sets to 6 face forms, utilizes the infrared LED transmission signal of paster to this kind of mode, the effectual problem of solving the infrared transmission angle. The circuit board is unfolded as shown in fig. 4. The circuit board exists in the form of a flexible circuit board, and is convenient to mount. The circuit board is in the form of 6 faces, each of which is provided with an infrared emitting circuit.
The structure of the wireless signal transmitting circuit is shown in fig. 5, in the normal working process, the processor is in a low power consumption mode, and the consumption current is extremely low and is below 1 ua. When a contact signal is received, the infrared transmitting tube is awakened rapidly, the awakening time is 2-3us, then the infrared transmitting tube is driven by a PWM signal generated by the processor, the infrared transmitting tube transmits a signal with a certain frequency, and the PWM power is limited between 100K and 150K in order to meet the requirement of rapid communication.
After the contact signal is transmitted, the processor does not sleep immediately, but sends the electric quantity information after a certain interval time, and then enters a low power consumption state.
The structure of the wireless receiving circuit is shown in fig. 6, and the wireless receiving circuit comprises an infrared signal acquisition module, a signal amplification module and a signal comparison and shaping module, wherein the infrared signal acquisition module, the signal amplification module and the signal comparison and shaping module are sequentially connected in series to form the whole infrared receiving module.
As shown in fig. 7, the infrared signal collecting module includes an infrared receiving tube D2, a resistor R3, and a resistor R4. The cathode of the infrared receiving tube is connected with 5V voltage and is connected with a 100K resistor R3 in parallel, the D2 and the R3 are connected with a 10K resistor R4 in series, and the other end of the resistor R4 is grounded. The signal received by the infrared receiving tube D2 is output to the following conditioning circuit, i.e. the signal output port SignalOut1 of the module, through the anode thereof. The module realizes the conversion between the optical signal and the electric signal received by the infrared receiving tube.
As shown in fig. 8, the signal amplification module includes an operational amplifier LM324N, capacitors C1, C2, resistors R5, R6, R7, R8, R9, R10, R11, and R12. The 4 port of the operational amplifier LM324N in the module is connected with 5V voltage, and the 11 port is grounded to provide power for the operational amplifier. In fig. 1, a signal output terminal SignalOut1 is input at a signal input port SignalIn1 of the module, and is connected in series with a capacitor C1 to divide a direct current signal in the signal, a port 2 of an operational amplifier is connected with a resistor R5, the other end of the resistor R5 is connected in series with a capacitor C1 to complete signal input to an inverting input port 2 of an operational amplifier, the inverting input port 2 of the operational amplifier and an output port 1 are connected in parallel with a resistor R6, the resistors R7 and R8 are connected in parallel between a voltage 5V and ground to complete voltage division, and a common node of the resistors R7 and R8 is connected to a non-inverting input port 3 of the operational amplifier to provide a reference voltage for the operational amplifier. An output port 1 of the operational amplifier is connected in series with a capacitor C2 to divide a direct current signal in the signal, a port 6 of the operational amplifier is connected with a resistor R9, the other end of the resistor R9 is connected in series with a capacitor C2 to complete the input of the signal to an inverting input port 6 of the operational amplifier, an output port 7 of the inverting input port 6 of the operational amplifier is connected in parallel with a resistor R10, resistors R11 and R12 are connected in parallel between a voltage 5V and the ground to complete voltage division, and a common node of the resistors R11 and R12 is connected to a positive input port 5 of the operational amplifier to provide a reference voltage for the operational amplifier. The output port 7 of the operational amplifier is connected with a signal output port SignalOut2 to provide signals for the following circuits. The module realizes the amplification of signals received by the infrared receiving tube.
The signal comparing and shaping module is shown in fig. 9, and the module includes a voltage comparator LM393P, resistors R13, R14, R15, where the port 8 of the voltage comparator is connected to 5V, the port 4 is connected to ground, the infrared signal output port SignalOut2 of fig. 2 is input from the signal input terminal SignalIn2 of the module and connected to the inverting input port 2 of the voltage comparator, the resistors R13 and R14 are connected in series and connected in parallel between 5V and ground, the common port of the resistors R13 and R14 is connected to the non-inverting input port 3 of the voltage comparator, the resistor R15 is connected in parallel between the port 3 and the output port 1 of the voltage comparator, the output port 1 of the voltage comparator is connected to the signal output port DataOut, and the module is a hysteretic comparator, and implements the comparing and shaping output of the infrared signal.
In the normal working process, the processor in the wireless signal transmitting circuit is in a low power consumption mode, and the consumed current is extremely small and is below 1 ua. When a contact signal is received, the infrared transmitting tube is awakened rapidly, the awakening time is 2-3us, then the infrared transmitting tube is driven by a PWM signal generated by the processor, the infrared transmitting tube transmits a signal with a certain frequency, and the PWM power is limited between 100K and 150K in order to meet the requirement of rapid communication.
After the contact signal is transmitted, the processor does not sleep immediately, but sends the electric quantity information after a certain interval time, and then enters a low power consumption state. The receiver can timely detect the electric quantity of the battery, and a user can timely replace the battery under the condition of lower electric quantity of the battery by processing the electric quantity information, so that the normal work of the system is ensured.
In the process of general infrared communication, low-speed infrared communication is generally adopted, and selectable waveform sending teachers have PWM (pulse width modulation) and PPM (pulse position modulation), the invention is based on fast output of contact signals, and the existing infrared communication mode is difficult to meet the requirements of the system, therefore, compared with the prior art, the invention selects information of high-speed infrared signals as transmission, and utilizes the circuit to complete the receiving and processing of the infrared signals, thereby ensuring the stability of the infrared signals at a certain distance (0.5-2 m).
The infrared signal was observed, and it was found that around 100Khz, the signal was transmitted with a stable frequency despite a large distortion of the transmitted square waveform.
In order to ensure the real-time performance in the transmission process of the signals, the invention makes the following convention for the transmitted infrared signals:
the signal transmission starts at a high level, and the duty ratio of the high level is 1/3, so that the infrared signal transmission can be quickly tracked with the minimum time delay generated after the infrared receiving circuit processes the signal.
The information to be transmitted in the invention is as follows:
a contact open state;
the electric quantity is in a normal state;
a low battery state;
a very low state of charge.
The specific description process is as follows:
1) and (3) contact opening signal transmission:
the transmitting terminal enters a low power consumption state at ordinary times after being powered by a battery and is used for saving electric quantity, the contact is in a normally closed state, and the transmitting terminal is in a high-level state at ordinary times according to the electric quantity connection method of the transmitting terminal; when the thimble of the equipment is touched, the state of the contact is changed, the processor in the transmitting end receives a falling edge signal transmitted by the contact, the processor is rapidly awakened to enter an active state, and the transmitting end sends out a specific waveform to the 6 paths of infrared transmitting tubes. For effective differentiation, the contact opening signal is defined as: PWM waveform with frequency 120khz, duty cycle 30%.
The receiving end processor amplifies the infrared received signal according to the signal receiving circuit, and converts the analog signal into high and low levels. The receiving end receives and processes the signal, and the general idea is to measure the interval time of two rising edges. The process is as shown in figure 10 below,
and after obtaining the effective pulse signal, calculating the pulse frequency, and judging whether the frequency accords with a defined frequency interval, if so, handing over to a rear-stage mechanism, and otherwise, discarding.
To improve the reliability of reception, the frequency of the received signal is defined as 100kz +/-2 khz.
2) Normal signal transmission of electric quantity:
since the real-time requirement of the electric quantity is not too high, the priority can be set to be lower in the transmission process, and after the contact signal is transmitted, the signal can be transmitted generally before the contact signal arrives next time.
The process of transmission and reception is similar to the contact signal transmission described above and is not expanded. To distinguish the signal information, the normal signal frequency of the power is defined as: 110khz +/-2 khz;
3) and (3) transferring a low-power state signal: frequency is defined as 100khz +/-2 khz;
4) and (3) transmitting an electric quantity extremely-low state signal: the frequency is defined as 90khz +/-2 khz.
Claims (2)
1. A super-high speed infrared wireless information transfer method is characterized in that an infrared transmitting end and an infrared receiving end are adopted, a wireless signal transmitting circuit board is arranged in the infrared transmitting end, the wireless signal transmitting circuit board is arranged in a 6-surface mode, an infrared transmitting circuit is arranged on each surface, a wireless receiving circuit board is arranged in the receiving end, the wireless receiving circuit board comprises an infrared signal acquisition module, a signal amplification module and a signal comparison and shaping module, the infrared signal acquisition module comprises an infrared receiving tube D2, resistors R3 and R4, the cathode of the infrared receiving tube D2 is connected with 5V voltage, a resistor R3 is connected in parallel, an infrared receiving tube D2 and a resistor R3 are connected in series with a resistor R4, the other end of the resistor R4 is grounded, a signal received by the infrared receiving tube D2 is output to a rear conditioning circuit through the anode of the signal output port SignalOut1 of the module, the signal amplification module comprises an operational amplifier LM324N, a capacitor C1, a capacitor C2, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11 and a resistor R12, wherein 4 ports of the operational amplifier LM324N are connected with 5V voltage, 11 ports are grounded to provide power for the operational amplifier, a signal output end SignalOut1 of the infrared signal acquisition module is a signal input end SignalIn1 of the signal amplification module, SignalIn1 is connected with the capacitor C1 in series to divide a direct current signal in the signal, a port 2 of the operational amplifier is connected with a resistor R5, the other end of the resistor R5 is connected with the capacitor C1 in series to complete signal input to an inverting input port 2 of the operational amplifier, the inverting input port 2 of the operational amplifier is connected with an output port 1 in parallel with the resistor R6, resistors R9 and R8 are connected between the voltage 6865V and the ground to complete voltage division, a common node of the resistors R7 and R8 is connected with an input port 3 of the operational amplifier in series to provide a reference input port 3, the direct current signal in the signal is divided, a port 6 of the operational amplifier is connected with a resistor R9, the other end of a resistor R9 is connected with a capacitor C2 in series, the signal is input to an inverting input port 6 of the operational amplifier, an output port 7 of the inverting input port 6 of the operational amplifier is connected with a resistor R10 in parallel, resistors R11 and R12 are connected between voltage 5V and the ground in parallel to divide the voltage, a common node of the resistors R11 and R12 is connected to a positive input port 5 of the operational amplifier to provide reference voltage for the operational amplifier, an output port 7 of the operational amplifier is connected with a signal output port SignalOut2 to provide signals for a following circuit; the signal comparison and shaping module comprises a voltage comparator LM393P, a resistor R13, a resistor R14 and a resistor R15, a port 8 of the voltage comparator is connected with a voltage of 5V, a port 4 of the voltage comparator is grounded, an infrared signal output port SignalOut2 of the signal amplification module is input from a signal input end SignalIn2 of the signal comparison and shaping module and is connected to an inverted input port 2 of the voltage comparator, a resistor R13 and a resistor R14 are connected in series and in parallel between the voltage of 5V and the ground, a common port of the resistor R13 and a resistor R14 is connected to a positive input port 3 of the voltage comparator, a resistor R15 is connected in parallel between the port 3 and an output port 1 of the voltage comparator, and an output port 1 of the voltage comparator is connected with a signal output;
when the wireless signal transmitting circuit receives the contact signal, the wireless signal transmitting circuit is waken up quickly, the wakening time is 2-3us, then the processor generates a PWM signal to drive the infrared transmitting tube, the infrared transmitting tube transmits a signal with a certain frequency,
signaling begins with a high level, a high level duty cycle of 1/3,
the information that needs to be communicated is as follows:
contact opening signal transmission
The transmitting terminal enters a low power consumption state at ordinary times after being powered by a battery and is used for saving electric quantity, the contact is in a normally closed state, and the transmitting terminal is in a high-level state at ordinary times according to the electric quantity connection method of the transmitting terminal; when the thimble of the equipment is touched, the state of the contact is changed, the processor in the transmitting end receives the falling edge signal transmitted by the contact, the processor is rapidly awakened to enter an active state, the transmitting end sends out a specific waveform to the 6-path infrared transmitting tube,
for effective differentiation, the contact opening signal is defined as: a PWM waveform with a frequency of 120khz, a duty cycle of 30%,
the receiving end processor amplifies the infrared received signal, converts the analog signal into high and low level signals,
the receiving end receives and processes the signal, measures the interval time of two rising edges, and the processing process is as follows:
after obtaining the effective pulse signal, calculating the pulse frequency, and judging whether the frequency accords with a defined frequency interval, if so, handing over to a rear-stage mechanism, otherwise, discarding;
to improve the reliability of reception, the frequency of the received signal is defined as 100kz, +/-2 khz;
normal signal transmission of electric quantity
After the contact signal is transmitted, transmitting an electric quantity normal signal before the next contact signal arrives;
the normal signal frequency of the electric quantity is defined as: 110khz +/-2 khz;
and (3) transferring a low-power state signal: frequency is defined as 100khz +/-2 khz;
and (3) transmitting an electric quantity extremely-low state signal: the frequency is defined as 90khz +/-2 khz.
2. The ultra-high speed infrared wireless information transfer method according to claim 1, wherein the infrared transmitting circuit comprises a contact signal capturing circuit and a low power consumption processor, when the contact signal is received, the low power consumption processor is waken up rapidly, the wakening time is 2-3us, then the processor generates a PWM signal to drive the infrared transmitting tube, the infrared transmitting tube transmits a signal with a certain frequency, the PWM power is limited between 100K-150K in order to meet the requirement of rapid communication, after the contact signal is transmitted, the processor transmits power information after a certain interval time, and then the infrared transmitting tube enters a low power consumption state.
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|---|---|---|---|---|
| CN103701531A (en) * | 2013-12-18 | 2014-04-02 | 深圳市新国都技术股份有限公司 | Infrared transmission circuit, infrared receiving circuit and infrared transceiver system |
| CN105717380A (en) * | 2014-12-04 | 2016-06-29 | 天津市品通电力科技有限公司 | Emitter for micro-hole detection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH05191161A (en) * | 1992-01-16 | 1993-07-30 | Nec Corp | Infrared reception preamplifier |
| JP2005269169A (en) * | 2004-03-18 | 2005-09-29 | Daii Sai | Data distribution control system using infrared ray, data distribution apparatus, its program and its data distribution system |
| CN105141370B (en) * | 2015-07-31 | 2017-08-25 | 宁波成电泰克电子信息技术发展有限公司 | A kind of processing method of closely ultrahigh speed infrared transmitted signal |
| CN205562789U (en) * | 2016-03-29 | 2016-09-07 | 浙江诸暨奇创电子科技有限公司 | Infrared transmitting circuit |
| CN106375003A (en) * | 2016-11-04 | 2017-02-01 | 上海迪璞电子科技股份有限公司 | High-speed long-distance directional data infrared transmission device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701531A (en) * | 2013-12-18 | 2014-04-02 | 深圳市新国都技术股份有限公司 | Infrared transmission circuit, infrared receiving circuit and infrared transceiver system |
| CN105717380A (en) * | 2014-12-04 | 2016-06-29 | 天津市品通电力科技有限公司 | Emitter for micro-hole detection |
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