CN110855360A - Flexible electronic communication system based on optical communication technology and application thereof - Google Patents
Flexible electronic communication system based on optical communication technology and application thereof Download PDFInfo
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Abstract
The invention discloses a flexible electronic communication system based on an optical communication technology, which comprises a voltage modulation analog signal module, an LED (light emitting diode), an optical receiving module and a signal demodulation and feedback module, wherein the voltage modulation analog signal module is used for modulating the voltage of a light emitting diode; the voltage modulation analog signal modulates an original signal acquired by the flexible electronic sensor into a specific voltage signal to drive the LED to emit light; the light detector obtains an optical signal transmitted through the atmosphere, the light intensity and the light emitting frequency of the LED are represented through the current change condition, and then the voltage at two ends of the load resistor is changed; the signal demodulation and feedback module demodulates corresponding communication information and makes corresponding response to environmental stimulus or executes corresponding remote control instructions. The invention provides a solution with visual feedback for flexible electronic communication, a perception mode of a robot for environmental signals and a control mode of a remote robot by a human, so as to provide another communication mode besides traditional wired communication and wireless communication.
Description
Technical Field
The invention relates to a flexible electronic communication system, in particular to a flexible electronic communication system based on an optical communication technology, and also relates to an application of the system in a perception mode of a robot for environmental signals and a remote control mode of the robot by a human.
Background
With the rapid development of flexible electronic technology and future humanoid robots integrating the epidermis perception system, the robot can sense signals by itself and control the robot remotely by people in a communication mode. Currently, most of the commonly used communication schemes of the flexible electronic technology are in a wireless bluetooth mode, which requires complex circuitry and lacks effective visual or auditory feedback.
Compared with bluetooth based on radio wave transmission, the optical communication mode based on optical wave transmission has greater application advantages in the communication field with wider transmission frequency band, larger communication capacity and stronger anti-electromagnetic interference capability.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the problems in the prior art, the invention applies an optical communication mode to the field of flexible electronics, provides a flexible electronic communication system based on an optical communication technology, and aims to provide an application of the flexible electronic communication system in a sensing mode of a robot for environmental signals and a remote control mode of the robot by a person so as to provide another communication mode besides traditional limited communication and wireless communication.
The technical scheme is as follows: a flexible electronic communication system based on optical communication, comprising:
the flexible sensor is used for acquiring original signals including natural environment signals to be sensed, remote control signals and arrayed signals;
the voltage modulation analog signal module is used for converting the natural analog signal into a voltage signal capable of driving the LED to emit light, wherein the voltage signal corresponds to the original signal one by one and carries different communication information through frequency and amplitude variation;
the LED light-emitting diode emits light according to the voltage output mode of the voltage modulation analog signal module;
the light receiving module comprises a driving power supply, a light detector and a load resistor, wherein the light detector acquires an illumination signal transmitted through an atmospheric environment, the load resistor represents the current change flowing through the light detector through the voltage change at two ends of the load resistor, and the light emitting intensity and the light emitting frequency of the LED are reflected through the current change;
and the signal demodulation and feedback module is used for decoding the LED optical signal received by the optical receiving module and executing corresponding actions according to the related information obtained by decoding, wherein the actions include the reaction to the natural environment stimulus, the reaction to the remote control information and the acquisition of arrayed signals.
Further, the modulation/demodulation mode is ASK, OOK, FSK or GFSK.
Further, the natural environment stimulation signal includes a physical or chemical signal representing pressure, temperature, humidity.
Further, the remote control signal comprises a limb signal representing the bending angle or the stretching degree of the human joint.
Furthermore, for remote control signals or arrayed signals, the voltage modulation analog signal module collects multi-channel signals through the flexible sensor, and then codes and modulates the multi-channel signals into different digital signal formats according to the collected multi-channel voltage signals, so as to drive the LED to emit light.
Further, the light detector is a PN diode, PIN diode, avalanche diode or other light intensity detector integrated with a photosensitive diode.
A robot applying the flexible electronic optical communication system is characterized in that a flexible sensor is integrated on the finger belly of a finger of the robot, and the robot acquires an original signal through the flexible sensor attached to the finger; the LED is integrated on the back of the hand of the robot; the optical detector is integrally fixed on the forehead or the eye of the robot; the signal demodulation and feedback module comprises a signal demodulation submodule and a mechanical feedback module controlled by the signal demodulation submodule, the signal demodulation module is arranged in a processor of the robot, the mechanical feedback module is used for controlling the hand of the robot to perform feedback action, the signal demodulation submodule demodulates a decoded signal, a command of whether to feed back is given according to the signal form, then the command controls the corresponding mechanical feedback module, and the hand of the robot performs feedback action.
A robot remote control method applying the flexible electronic optical communication system comprises the following steps:
the voltage modulation analog signal module modulates different attitude codes into corresponding voltage signals with different frequency modes by adopting a coding and modulation method;
step 3, the LED emits light according to the voltage signal output by the voltage modulation analog signal module, wherein the light emitting frequency and the intensity comprise corresponding communication information;
step 4, the optical detector acquires an optical signal transmitted through the atmosphere, the luminous intensity and luminous frequency of the LED are represented through the current change condition, and then the load resistor represents the current change flowing through the optical detector through the voltage change at the two ends, so that the information acquisition and decoding of the signal demodulation and feedback module are facilitated;
and 5, demodulating a corresponding digital signal by the signal demodulation and feedback module in the same decoding and demodulation mode as the voltage modulation analog signal module, and finding corresponding limb posture information by searching the LookUp Table. And controlling the robot to realize corresponding postures through the robot control center.
A communication method of a flexible large-scale sensing array of the flexible electronic optical communication system comprises the following steps:
2, converting the two-dimensional distribution signals acquired by the flexible sensor into digital signals by a voltage modulation analog signal module, and coding and modulating position and voltage information into corresponding voltage signals with different frequency modes by adopting a coding and modulation mode;
step 3, the LED emits light according to the voltage signal output by the voltage modulation analog signal module, wherein the light emitting frequency and the intensity comprise corresponding communication information;
step 4, the optical detector acquires an optical signal transmitted through the atmosphere, the luminous intensity and luminous frequency of the LED are represented through the current change condition, and then the load resistor represents the current change flowing through the optical detector through the voltage change at the two ends, so that the information acquisition and decoding of the signal demodulation and feedback module are facilitated;
the signal demodulation and feedback module demodulates corresponding decoding information including position and voltage signals by adopting a decoding and demodulation mode the same as that of the voltage modulation analog signal module. Optionally, the corresponding decoding information is obtained through model demonstration
Compared with the prior art, the invention has the following remarkable advantages: the LED can perform corresponding light interactive feedback to a certain extent when emitting light; compared with a communication mode based on radio, the wireless communication system has higher band block and higher transmission, and information can be intercepted only on a light first propagation straight line because visible light can only be transmitted along the straight line; the existing robot-based and large-scale array-based transmission mode people are in an exploration stage, and the invention provides an explorable direction.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic structural view of embodiment 1 of the present invention;
FIG. 3 is a schematic structural view of example 2 of the present invention;
fig. 4 is a schematic diagram of the FSK modulation principle of embodiments 2 and 3 of the present invention;
fig. 5 is a schematic diagram of the FSK demodulation principle of embodiments 2 and 3 of the present invention;
FIG. 6 is a schematic structural view of example 3 of the present invention;
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
A flexible electronic communication system based on an optical communication technology comprises a voltage modulation analog signal module, an LED, a light receiving module, a signal demodulation module and a signal feedback module. As shown in fig. 1.
The voltage modulation analog signal module can realize, but is not limited to, the perception, coding and modulation of the following three signals:
1. physical and chemical signals such as pressure, temperature, humidity and the like are converted into voltage signals through the flexible sensors, wherein the voltage signals correspond to the natural analog signals one to one, the voltage analog signals are coded and modulated, and then the LED is driven to emit light;
2. converting a remote control signal containing limb information such as joint bending and stretching into a voltage signal through a stretching/pressure sensor, wherein the voltage signal corresponds to the limb information such as joint bending angle and stretching degree one by one, so that voltage analog signal coding modulation is realized, and then an LED is driven to emit light;
3. for more complex signal modes, such as arrayed signals and multiple signals transmitted by mixing multiple signals of pressure, temperature, humidity and the like, multi-channel signals can be acquired through the flexible sensor, and then the signals are coded and modulated into different digital signal formats according to the acquired multi-channel voltage signals so as to drive the LED to emit light;
an LED light emitting diode emitting light according to the voltage output pattern of the voltage modulation analog signal module, wherein the illumination intensity of the LED light emitting diode is positively correlated with the voltage, that is, the higher the voltage of the voltage modulation analog signal module is, the stronger the light emission is, the brighter the illumination is; the light emitting diode may be one of a white LED, a red LED, and the like.
The light receiving module comprises a driving power supply, a light detector and a load resistor, realizes detection of illumination information transmitted by the LED through the atmospheric environment, and represents the illumination intensity of the LED through the voltage change at two ends of the resistor; in particular, the light detector may be a PN diode, a PIN diode, an avalanche diode or any light intensity detector integrated with a photosensitive diode; the output current signal of the light detector is in a nearly linear relationship with the light intensity within a certain illumination intensity, so that the current flowing through the light detector is different under different LED brightness, and the voltages at two ends of the load resistor are different, thereby realizing the voltage representation of the LED illumination intensity.
The signal demodulation and feedback are used for decoding the LED optical signal received by the optical receiving module and executing corresponding action according to the related information obtained by decoding; the corresponding action may be a reaction to an environmental stimulus or a reaction to remote control information.
The working process is as follows:
step 2, the LED emits light according to the voltage signal output by the voltage modulation analog signal, wherein the light emitting frequency and the intensity comprise corresponding communication information;
step 3, the optical detector obtains an optical signal transmitted through the atmosphere, and the luminous intensity and the luminous frequency of the LED are represented through the current change condition;
step 4, the load resistor represents the current change flowing through the optical detector through the voltage change at the two ends, so that the information of the signal demodulation and feedback module can be conveniently acquired and decoded;
and 5, demodulating corresponding communication information by the signal demodulation and feedback module in the same modulation mode as the voltage modulation analog signal, and making a corresponding response to the environmental stimulus or executing a corresponding remote control instruction.
The demodulation mode corresponds to the modulation mode, which may be one of ASK, OOK, FSK, and GFSK, and in step 1, for simple signal transmission, the voltage analog signal may be directly used to represent the information contained in the original signal without using the voltage coding and modulation mode; in more detail, the voltage modulation analog signal module does not need to modulate and demodulate the acquired signal, and if the signal acquired by the flexible sensor is not a voltage signal, the signal acquired by the flexible sensor is converted into a voltage signal; if the signal obtained by the flexible sensor is a voltage signal, the voltage signal is simply subjected to multiple processing to better adapt to the power requirement of the LED and improve the voltage resolution as much as possible, then the LED is directly driven to emit light, the voltage is higher, the LED light intensity is higher, and the voltage change at two ends of the load is in positive correlation with the light intensity. The light intensity is used to transmit the signal directly, as shown in example 1.
First, the flexible electronic communication system of the present invention can be applied to robot sensing, specifically, the flexible sensor and the LED are integrated on the finger and the back of the hand of the robot, and the optical detector is integrated and fixed at the forehead or the eyes of the robot. The signal demodulation and feedback module comprises a signal demodulation submodule and a mechanical feedback module controlled by the signal demodulation submodule, the signal demodulation module is arranged in a processor of the robot, the mechanical feedback module is used for controlling the hand of the robot to perform feedback action, the signal demodulation submodule demodulates a decoded signal, a command of whether to feed back is given according to the signal form, then the command controls the corresponding mechanical feedback module, and the hand of the robot performs feedback action.
Example 1: the robot senses the pressure signal pressed by the finger through optical communication and makes hand contraction feedback
As shown in fig. 1, the robot converts a pressure signal obtained by touching a mechanical finger into a voltage signal through a flexible sensor attached to the finger, the amplitude of the voltage signal corresponds to the magnitude of the pressure signal one by one, the obtained voltage signal drives an LED red light emitting diode to drive and is transmitted to a PIN diode photodetector through an atmospheric channel, the current output by the PIN diode corresponds to the intensity of the LED red light emitting diode, the current signal flowing through the PIN diode is converted into a voltage signal through a power supply and a load resistor, and then a voltage threshold coding module in a signal demodulation and feedback module performs binary coding on the voltage obtained from two ends of the load resistor.
When the voltage is greater than a certain voltage threshold (Vth), the analog voltage signal is encoded into a digital signal 1; conversely, when the voltage is below a certain voltage threshold (Vth), the analog voltage signal is encoded as a digital signal 0.
And the digital signal output by the voltage threshold coding module gives a corresponding instruction to control the robot hand to make corresponding feedback. Specifically, when the digital signal is 1, the robot is controlled to contract hands, and the hand contracting reaction to the high pressure signal is realized; when the digital signal is 0, the previous state is maintained (extended or retracted).
The luminous intensity of the LED can be increased along with the increase of the pressure signal, and visual information interactive feedback is provided in certain specific occasions.
Secondly, the invention also provides an application of the flexible electronic communication system in the remote control of the robot.
Example 3: realizing real-time control of remote robot through optical communication
Specifically, this example shows an application example of the remote control of the robot by the optical communication technology, as shown in fig. 3, specifically,
the limb signal acquisition module is formed by attaching a plurality of specific sensors to specific joints, so that different posture information is acquired. Specifically, the five-channel voltage information represents gesture "2", that is, five flexible sensors are attached to finger joints, and finger bending information is represented by output voltages.
Since the digital signal modulation and de-coding module in the voltage modulation analog signal module only includes 1 limb posture information at each communication, in order to further reduce the communication pressure, different posture information encoding is realized through binary digital signal encoding, and then a digital signal "1" is encoded into a rectangular wave signal with frequency f1 and a digital signal "0" is encoded into a rectangular wave signal with frequency f2 by using an FSK (frequency shift keying) encoding mode as shown in fig. 4.
Specifically, for the gesture "2", it is determined first according to the voltage information acquired by the five channels that if the channel voltage corresponding to the index finger and the middle finger is lower than the set threshold voltage, and the channel voltage corresponding to the rest of the thumb, the ring finger and the little finger is higher than the set threshold voltage, the recognized gesture is considered as the gesture "2", and then the digital signal modulation coding module codes the pick-up as "00010" according to the preset coding mode, and adds the start bit 0 and the end bit 1, so that after the above two steps, the digital signal, 0000101, total 7-bit digital signals, can be coded. The digital signal "1" is encoded into a rectangular wave signal having a frequency of 10Hz and the digital signal "0" is encoded into a rectangular wave signal having a frequency of 100Hz using an FSK (frequency shift keying) encoding mode.
And a voltage driving module in the voltage modulation analog signal module receives the modulated voltage signal to drive the LED to emit light.
And a voltage detection acquisition module in the light receiving module acquires voltage signals at two ends of the load resistor and transmits the acquired voltage analog signals to a demodulation and decoding digital signal module.
The digital signal modulation and de-coding module in the signal demodulation and feedback module demodulates the digital signal at this time by recording the number of pulses within a certain time t, as shown in fig. 5. When the number of the recording pulses of the counter is N1, the corresponding frequency is f1, so the corresponding digital signal is '1'; accordingly, when the number of recording pulses of the counter is N2, the counter corresponds to a rectangular wave signal having a frequency f2, and the corresponding digital signal is "0". And then searching a LookUp Table of the LookUp Table to find a corresponding gesture.
Specifically, for the signal transmitted in the above 3, after passing through the module for demodulating and decoding digital signal,
0000101 is decoded, the start bit and the end bit are removed to obtain 00010, then the corresponding gesture "2" is found through the LookUp Table of the LookUp Table, and the robot control center controls to realize the gesture "2".
The workflow of this example is as follows:
And 2, modulating and de-encoding the digital signals by adopting a binary digital coding and FSK modulation mode, and modulating different gesture codes into corresponding voltage signals with different frequency modes.
And 3, the LED modulates the voltage signal output by the decoding module to emit light according to the digital signal, wherein the light emitting frequency and the intensity contain corresponding communication information.
And 4, the PIN optical detector acquires an optical signal transmitted through the atmosphere, the luminous intensity and the luminous frequency of the LED are represented through the current change condition, and then the load resistor represents the current change flowing through the optical detector through the voltage change at the two ends, so that the signal demodulation and feedback module information can be conveniently acquired and decoded.
And 5, demodulating a corresponding digital signal by a digital signal modulation and demodulation module in the signal demodulation and feedback module in a binary decoding and FSK demodulation mode which is the same as that of a demodulation and decoding digital signal module in the voltage modulation analog signal module, and then finding corresponding limb posture information by searching the LookUp Table. And controlling the robot to realize corresponding postures through the robot control center.
Example 3 Flexible LSI sensor array Transmission of Complex signals through optical communication
As shown in fig. 6, a two-dimensional pressure, temperature and other signal array signal acquired by an arrayed sensing module (flexible sensor) is transmitted to a fixed receiver through an optical communication technology, wherein the arrayed pressure sensing module is installed in any situation requiring two-dimensional pressure, temperature and other natural signal distribution information. The method specifically comprises the following steps:
the flexible sensor-the arrayed pressure sensing module senses the distribution mode of two-dimensional pressure and the like;
the digital signal modulation and de-coding module in the voltage modulation analog signal module converts two-dimensional pressure distribution acquired by the arrayed pressure sensing module into a voltage signal, and particularly, for a 5 x 5 array, the analog voltage signal Vx and y on each unit (x and y) represent the pressure of a change point.
Specifically, the information of the communication includes two important information positions and voltages at the positions, the position information is encoded into a digital signal by adopting binary coding, the voltages at different positions are converted into digital signals by an analog-to-digital converter, and then, a digital signal "1" is encoded into a rectangular wave signal with the frequency f1 and a digital signal "0" is encoded into a rectangular wave signal with the frequency f2 by adopting an FSK (frequency shift keying) encoding mode, as shown in FIG. 4.
Specifically, assuming a voltage of 5V at the (3,2) position, the first (3,2) code is 011010, where the first three bits 011 are a binary representation of 3 and the last three bits 010 are a binary representation of 2. The 5V is converted into 000101 through a built-in digital-to-analog conversion software module, and a start bit 0 and an end bit 1 are added, so that a digital signal, 00110100001011, which is a 14-bit digital signal in total, can be encoded through the two steps. The digital signal "1" is encoded into a rectangular wave signal having a frequency of 10Hz and the digital signal "0" is encoded into a rectangular wave signal having a frequency of 100Hz using an FSK (frequency shift keying) encoding mode.
And a voltage driving module in the voltage modulation analog signal module receives the voltage signal modulated by the digital signal modulation coding module to drive the LED to emit light.
And a voltage detection acquisition module in the light receiving module acquires voltage signals at two ends of the load resistor and transmits the acquired voltage analog signals to a demodulation and decoding digital signal module.
The demodulation decoding digital signal module: the digital signal at this time is demodulated by recording the number of pulses within a certain time t, as shown in fig. 5. When the number of the recording pulses of the counter is N1, the corresponding frequency is f1, so the corresponding digital signal is '1'; accordingly, when the number of recording pulses of the counter is N2, the counter corresponds to a rectangular wave signal having a frequency f2, and the corresponding digital signal is "0".
Specifically, for the signal transmitted in the above 3, after passing through the demodulation decoding digital signal module in the signal demodulation and feedback module, 00110100001011 is decoded, the start bit and the end bit are removed to obtain 0110100000101, further the position information (3,2) is decoded through the first six bits, and the last six bits obtain the 5V analog signal through the built-in digital-to-analog conversion software module. Alternatively, the corresponding decoding information may be obtained through model demonstration.
The workflow of this example is as follows:
step 2, the digital signal modulation and de-coding adopts a binary digital coding and FSK modulation mode to code and modulate the position and voltage information into corresponding voltage signals with different frequency modes;
step 3, the LED modulates the voltage signal output by the decoding module according to the digital signal in the voltage modulation analog signal module to emit light, wherein the light emitting frequency and the intensity contain corresponding communication information;
step 4, the PIN optical detector obtains an optical signal transmitted through the atmosphere, the luminous intensity and the luminous frequency of the LED are represented through the current change condition, and then the load resistor represents the current change flowing through the optical detector through the voltage change at the two ends, so that the information acquisition and decoding of the signal demodulation and feedback module are facilitated;
the digital signal modulation and demodulation module demodulates corresponding position and voltage signals by adopting a binary decoding and FSK demodulation mode which is the same as that of the digital signal demodulation and demodulation module. Alternatively, the corresponding decoding information can be obtained through model demonstration.
Claims (10)
1. A flexible electronic communication system based on optical communication technology, comprising:
the flexible sensor is used for acquiring original signals including natural environment signals, remote control signals and arrayed signals;
the voltage modulation analog signal module is used for converting the natural analog signal into a voltage signal capable of driving the LED to emit light, wherein the voltage signal corresponds to the original signal one by one and carries different communication information through frequency and amplitude variation;
the LED light-emitting diode emits light according to the voltage output mode of the voltage modulation analog signal module;
the light receiving module comprises a driving power supply, a light detector and a load resistor, wherein the light detector acquires an illumination signal transmitted through an atmospheric environment, the load resistor represents the current change flowing through the light detector through the voltage change at two ends of the load resistor, and the light emitting intensity and the light emitting frequency of the LED are reflected through the current change;
and the signal demodulation and feedback module is used for decoding the LED optical signal received by the optical receiving module and executing corresponding actions according to the related information obtained by decoding, wherein the actions include the reaction to the natural environment stimulus, the reaction to the remote control information and the acquisition of arrayed signals.
2. A flexible electronic communication system based on optical communication technology according to claim 1, characterized in that: the modulation/demodulation mode is ASK, OOK, FSK or GFSK.
3. A flexible electronic communication system based on optical communication technology according to claim 1, characterized in that: the raw signal includes at least one of a pressure, temperature, humidity signal.
4. A flexible electronic communication system based on optical communication technology according to claim 1, characterized in that: the remote control signal comprises a limb signal representing the bending angle or the stretching degree of the human joint.
5. A flexible electronic communication system based on optical communication technology according to claim 1, characterized in that: the voltage modulation analog signal module collects multi-channel signals through the flexible sensor, and then codes and modulates the multi-channel signals into different digital signal formats according to the collected multi-channel voltage signals, so as to drive the LED to emit light.
6. A flexible electronic communication system based on optical communication technology according to claim 1, characterized in that: the light detector is a PN diode, PIN diode, avalanche diode or other light intensity detector integrated with a photosensitive diode.
7. A robot using the flexible electronic optical communication system according to any one of claims 1 to 6, wherein: the flexible sensor is integrated on the finger belly of the robot finger, and the robot acquires an original signal through the flexible sensor attached to the finger; the LED is integrated on the back of the hand of the robot; the optical detector is integrally fixed on the forehead or the eye of the robot; the signal demodulation and feedback module comprises a signal demodulation submodule and a mechanical feedback module controlled by the signal demodulation submodule, the signal demodulation module is arranged in a processor of the robot, the mechanical feedback module is used for controlling the hand of the robot to perform feedback action, the signal demodulation submodule demodulates a decoded signal, a command of whether to feed back is given according to the signal form, then the command controls the corresponding mechanical feedback module, and the hand of the robot performs feedback action.
8. A robot remote control method applying the flexible electronic optical communication system according to any one of claims 1 to 6, comprising the steps of:
step 1, attaching the flexible sensor to a specific joint to acquire different attitude information;
the voltage modulation analog signal module modulates different attitude codes into corresponding voltage signals with different frequency modes by adopting a coding and modulation method;
step 3, the LED emits light according to the voltage signal output by the voltage modulation analog signal module, wherein the light emitting frequency and the intensity comprise corresponding communication information;
step 4, the optical detector acquires an optical signal transmitted through the atmosphere, the luminous intensity and luminous frequency of the LED are represented through the current change condition, and then the load resistor represents the current change flowing through the optical detector through the voltage change at the two ends, so that the information acquisition and decoding of the signal demodulation and feedback module are facilitated;
and 5, demodulating a corresponding digital signal by the signal demodulation and feedback module in the same decoding and demodulation mode as the voltage modulation analog signal module, and finding corresponding limb posture information by searching the LookUp Table. And controlling the robot to realize corresponding postures through the robot control center.
9. A communication method of a flexible large-scale sensor array applying the flexible electronic optical communication system according to any one of claims 1 to 6, comprising the steps of:
step 1, under any occasion needing two-dimensional natural environment signal distribution information, installing a flexible sensor to form an array pressure sensing module for sensing a distribution mode of two-dimensional natural environment signals;
2, converting the two-dimensional distribution signals acquired by the flexible sensor into digital signals by a voltage modulation analog signal module, and coding and modulating position and voltage information into corresponding voltage signals with different frequency modes by adopting a coding and modulation mode;
step 3, the LED emits light according to the voltage signal output by the voltage modulation analog signal module, wherein the light emitting frequency and the intensity comprise corresponding communication information;
step 4, the optical detector acquires an optical signal transmitted through the atmosphere, the luminous intensity and luminous frequency of the LED are represented through the current change condition, and then the load resistor represents the current change flowing through the optical detector through the voltage change at the two ends, so that the information acquisition and decoding of the signal demodulation and feedback module are facilitated;
the signal demodulation and feedback module demodulates corresponding decoding information including position and voltage signals by adopting a decoding and demodulation mode the same as that of the voltage modulation analog signal module.
10. The method of communicating a flexible large scale sensor array of claim 9, wherein: in the step 4, corresponding decoding information is obtained through model demonstration.
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| CN111579063A (en) * | 2020-04-11 | 2020-08-25 | 复旦大学 | Flexible light sensor |
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