TWI524686B - Optical fiber transmission apparatus and method for data transmission and power feeding - Google Patents

Description

Optical fiber transmission device and method for transmitting data and feeding

The present invention relates to an optical fiber transmission apparatus and method, and more particularly to an optical fiber transmission apparatus and method for transmitting data and power, which can be applied to a communication system connected by optical fibers.

The advantage of feed communication is that the signal and the power supply share the same connection line, which can save the cost of configuring the wire and save the wiring time. Therefore, there are many technologies, patents and products that use the power line as the communication pipe. For example, X10 (Power Line Carrier Communication Specification), PLC (Power Line Communication), Homeplug (Power Line Communication Standard Interface), ..., and PoE (Ethernet Power Supply) using the network route. The above technology mainly relates to the communication signal (data) being attached to the power supply cable by the carrier at the active end, and the signal (data) is separated by filtering on the receiving device.

The Republic of China Patent No. I289386 discloses a "power line communication data machine for AC/DC power supply", which is mainly divided into the signal line of the electric line communication and the signal and the line of the electric line. Patent No. M401931 discloses a "signal transmission circuit capable of transmitting a carrier signal using a power line", which is an electric terminal extension socket for transmitting a telephone signal through an electric line. The data transmission of the two patents is processed by power line carrier modulation and filtering.

The present invention provides an optical fiber transmission apparatus and method for transmitting data and feeding. Accordingly, the master data transmission device of the optical fiber transmission device performs data transmission and feeding to the slave data transmission device by the same optical fiber connection and the slave data transmission device of the optical fiber transmission device. This fiber optic transmission device can be applied to various communication systems connected by optical fibers.

According to one aspect of the invention, an embodiment of an optical fiber transmission device for transmitting data and feeding is provided. The optical fiber transmission device comprises: a master data transmission device and a slave data transmission device. The master data transmission device includes a first fiber transceiver circuit; the slave data transmission device includes a second fiber transceiver circuit, and the second fiber transceiver circuit is optically coupled to the first fiber transceiver circuit. In the power transmission state, the second fiber transceiver circuit is configured to receive the first optical signal from the master data transmission device to output the power signal from a fiber connection to split the light, and the slave data transmission device is configured to store the energy of the power signal. Working power as a slave data transmission device. In the data transmission state, the second fiber transceiver circuit is configured to receive the second optical signal from the master data transmission device from the fiber link to split the light to output the data signal.

According to still another aspect of the present invention, an embodiment of an optical fiber transmission method for transmitting data and feeding is proposed. The optical fiber transmission method comprises the steps of: providing a first optical fiber transceiver circuit; providing a second fiber transceiver circuit, wherein the second fiber transceiver circuit is optically connected to the first fiber transceiver circuit; and in a power transmission state: by the second fiber The transceiver circuit receives a first optical signal from the first fiber transceiver circuit from a fiber optic connection to output a power signal; and stores the energy of the power signal as the working power of a data transmission device. In a data transmission state, a second optical signal from the first optical fiber transceiver circuit is received by the second optical fiber transceiver circuit from the optical fiber to receive a data signal.

According to still another aspect of the present invention, an embodiment of a master data transmission apparatus and method as described above is provided for transmitting data and feeding via a fiber optic connection.

According to still another aspect of the present invention, an embodiment of a slave data transmission apparatus and method as described above is provided for transmitting data and obtaining electrical energy via a fiber optic connection.

In order to make the various aspects and the aspects of the present invention described above more readily apparent, the detailed description of the embodiments will be described in the accompanying drawings.

The invention will be described in detail with reference to the accompanying drawings in the accompanying drawings, in which The description is intended to be used, and the scope of the present invention should not be construed as limiting the scope of the invention.

Please refer to FIG. 1, which illustrates a block diagram of a fiber optic transmission apparatus to which an embodiment of the present invention is applied in a fiber optic connection communication system. For example, the communication system is, for example, a communication system of a smart home, wherein the server 1 is responsible for monitoring various states of the home (such as door and window opening and closing, air quality, air conditioning, power usage, state of home appliances, etc.), server 1 Optically coupled to one or more sensing nodes 2 in one or more fiber optic connections (eg, OL1, OL2). For example, the sensing node 2 includes various sensing elements that are sturdy or chemical or even sturdy, and the sensor utilizes a separate power supply and a small energy consumption.

The communication system in FIG. 1 applies a fiber optic transmission device according to an embodiment of the present invention between a server 1 and one or more sensing nodes 2, and the fiber optic transmission device includes a master data transmission device 10 and a slave data transmission device 20. . The server 1 is provided with a master data transmission device 10, and the sensor node 2 is provided with a slave data transmission device 20. Since the master data transmission device 10 performs data transmission and feeding to the slave data transmission device 20 by the same optical fiber OL1 and the slave data transmission device 20, the communication system of FIG. 1 brings lower complexity and architecture. Flexibility in function extension. The master data transmission device 10 and the slave data transmission device 20 can be implemented in various different manners, for example, embedded in a communication system, or implemented by externally connecting connectors; in addition, the master data transmission device 10 and the slave can be realized. The data transmission device 20 communicates in an addressed manner, that is, a network system can be implemented.

It should be noted that the master data transmission device 10 and the slave data transmission device 20 respectively include respective fiber transceiver circuits for optically connecting OL1 via the same fiber. The optical fiber transmission device has: a power transmission state (or mode) for feeding to one of the slave data transmission devices 20, and one data transmission for data transmission between the master data transmission device 10 and the slave data transmission device 20. Status (or mode) or data return status (or mode). In the power transmission state, the optical fiber transceiver circuit of the slave data transmission device 20 is configured to receive a first optical signal from the master data transmission device 10 in a split manner from the fiber connection OL1 to output a power signal, and the slave data transmission device 20 The energy for storing the power signal is used as the operating power of the slave data transmission device 20. In the data transfer state, the fiber transceiver circuit of the slave data transmission device 20 is configured to receive a second optical signal from the master data transmission device 10 in a split manner from the fiber link OL1 to output a data signal. The optical fiber connection OL1 may represent a communication connection formed by a single optical fiber, or a communication connection in which a plurality of optical fibers are serially connected by a repeater, or an optical connection between the optical fiber connection OL1 and the optical connection between the two ends. Communication link.

Various embodiments will be described below with respect to the master data transmission device 10 and the slave data transmission device 20 of the optical fiber transmission device.

2 is a circuit block diagram showing an embodiment of the master data transfer device 10. The master data transmission device 10 includes a fiber optic transceiver circuit 11, a control circuit 12, and a transmission interface 15. Control circuit 12 is implemented, for example, as a microprocessor, a programmable logic circuit, or a microcontroller or proprietary circuit.

The control circuit 12 can read the communication data D1 via various transmission interfaces 15 (for example, Ethernet, Bluetooth, USB, RS232, or general-purpose output port, etc.), and control the optical transceiver circuit 11 to emit the second optical signal according to the data D1. . For example, the control circuit 12 is in accordance with the level of the data D1, and the optical fiber transceiver circuit 11 generates optical signals of different intensities, and then transmitted to the slave data transmission device 20 via the fiber link OL1; for example, an optical signal of a certain intensity VH represents The high level of data, another different intensity VL optical signal represents a low level of data; for example, the intensity VL can be designed to have an intensity of 0, ie no transmission, however the implementation of the invention is not limited thereto.

In addition, in the power transmission state (or mode), no data transmission is performed, and the control circuit 12 controls the optical transceiver circuit 11 to transmit the first optical signal to one end of the optical fiber connection OL1, and then to the slave of the other end of the optical fiber connection OL1. Data transmission device 20. The first optical signal has an intensity VP for supplying energy of the slave data transmission device 20 for use as operating power. Therefore, in an example, the first optical signal can be set to have the highest signal strength of the representative data when performing data transmission; and in another example, the first optical signal can be set to have the highest signal than the foregoing. Higher intensity signal strength to enhance energy transfer efficiency.

In the data return status (or mode), when the master data transmission device 10 is to receive the return data of the slave data transmission device 20, the control circuit 12 can cause the fiber transceiver circuit 11 to stop emitting the optical signal and receive the connection via the optical fiber. The data transmitted by the OL1 is transmitted to the other circuit via the transmission interface 15; for example, the data of the sensing node 2 in FIG. 1 is transmitted back to the internal processor of the server 1 through the master data transmission device 10 for monitoring. Analysis or processing of the status.

FIG. 3 shows a circuit block diagram of one embodiment of a slave data transfer device 20. The slave data transmission device 20 includes a fiber optic transceiver circuit 21, a control circuit 22, a charging circuit 23, a battery 24, and a transmission interface 25. Control circuit 22 is implemented, for example, in various manners of control circuit 12 described above.

In the power transmission state (or mode), when the first optical signal having the intensity VP is received via the optical fiber connection OL1, the charging circuit 23 acquires the power signal from the signal terminal N1 of the optical fiber transceiver circuit 21 and charges the battery 24.

In the data transmission state (or mode), when the signal terminal N2 (or N1) of the fiber transceiver circuit 21 is an electrical signal of a pulse potential, the control circuit 22 can receive and interpret the electrical signal and transmit the data via the transmission interface 25. D2 to other circuits; for example, the data D2 is passed to an internal processor or controller of the sensing node 2 (or other node) or directly to the sensor in the sensing node 2.

In addition, in the data return status (or mode), when the slave data transmission device 20 is to return data or the master data transmission device 10 actively requests data to be obtained, the control circuit 22 drives the fiber transceiver circuit 21 to send the data to the fiber link. OL1.

In some embodiments, the aforementioned transmission interface is implemented by, for example, Ethernet, Bluetooth, USB, RS232, or a general-purpose output port. Accordingly, the master data transmission device 10 and the slave data transmission device 20 can also be used as connectors to electrically connect the two electronic devices, so that the two electronic devices can be optically coupled via the optical fiber connection OL1. According to another embodiment of FIG. 2 or 3 above, when the implemented communication system does not need to use external data, the transmission interface can be omitted, and the communication data can be generated and processed by the control circuit. For another example, when the master data transmission device 10 and the slave data transmission device 20 are embedded in the communication system, the transmission interface can be omitted. In one embodiment, the slave data transmission device 20 can be implemented to function as an output power signal and data as desired, and the charging circuit 23 or (and) the battery 24 can be considered an external component as needed.

Referring to FIG. 4, an embodiment of the optical fiber transceiver circuit 11 of the master data transmission device 10 and the fiber transceiver circuit 21 of the slave data transmission device 20 is shown.

As exemplified in FIG. 4, the optical fiber transceiver circuit 11 includes a communication light source 111, a light splitting device 112, and a light sensing device 113. The beam splitting device 112 is used to optically couple the fiber optic link OL1. The communication light source 111 is a light emitting device disposed on one side of the light splitting device 112 to transmit a first optical signal or a second optical signal through the light splitting device 112. The light sensing device 113 is a light receiving device that is disposed on the other side of the light splitting device 112 to optically couple the optical fiber connection OL1 in a split manner. In addition, the control circuit 12 controls the manner of the optical fiber transceiver circuit 11, for example, by changing the size or level or signal form of the control signal CS1 to drive the communication light source 111 to emit an optical signal (represented by LS), such as the first optical signal or the second. Optical signal. Further, the light sensing device 113 outputs the received signal RS1, and the control circuit 12 can determine whether the optical fiber transceiver circuit 21 is to return data or whether there is request information based on the size or level or signal form of the received signal RS1.

As further illustrated in FIG. 4, the optical fiber transceiver circuit 21 includes a communication light source 211, a light splitting device 212, a light sensing device 213, and a photoelectric conversion device 214. The beam splitting device 212 is used to optically couple the fiber optic link OL1. The communication light source 211 is a light emitting device disposed on one side of the light splitting device 212 to transmit an optical signal for returning data to the optical fiber transceiver circuit 11 of the master data transmission device 10 through the light splitting device 212. The light sensing device 213 and the photoelectric conversion device 214 are respectively disposed on the other two sides of the light splitting device 212 to optically couple the optical fiber connection OL1 in a split manner. In addition, the control circuit 22 controls the manner of the fiber transceiver circuit 21, for example, by changing the size or level or signal form of the control signal CS2 to drive the communication light source 211 to emit an optical signal for return. Further, the light sensing device 213 as the light receiving device outputs the received signal RS2, and the control circuit 22 can determine whether the optical fiber transceiver circuit 21 is to return data or whether there is request information based on the size or level of the received signal RS2 or the signal form. Further, the photoelectric conversion device 214 outputs a power signal PS that can be used to charge the battery 24 by the charging circuit 23. The control circuit 22 can also determine whether the fiber transceiver circuit 11 is transmitting data or whether there is request or command information based on the size or level or signal form of the power signal PS. In another example, the control circuit 22 can determine whether the fiber link OL1 is busy or determine the state of the fiber transceiver circuit 11 based on at least one of the received signal RS2 and the power signal PS.

Further, the foregoing interaction between the optical fiber transceiver circuit 11 and the optical fiber transceiver circuit 21 can utilize the control signal CS1 of the optical fiber transceiver circuit 11 and the control signal CS2 of the optical fiber transceiver circuit 21 and the received signal RS2 (or even the power signal). PS) to change or follow a communication protocol.

For example, FIG. 5A shows a schematic diagram of an embodiment of the waveform of the control signal CS1 of the optical fiber transceiver circuit 11 and the power signal PS of the optical fiber transceiver circuit 21 in the power transmission state. 5A shows that in the power transmission state, the control circuit 12 of the master data transmission device 10 outputs a control signal CS1 (taking a high level as an example) to continuously control the communication light source 111 to emit a first optical signal (for example, lighting a light diode-based communication). The light source 111) transmits light energy to the slave data transmission device 20 via the fiber link OL1, and the light split device 212 of the fiber transceiver circuit 21 of the slave data transmission device 20 is, for example, a semi-reflective lens that refracts light to the photoelectric conversion device 214. The generated electric power stores the battery 24 via the charging circuit 23.

Fig. 5B is a diagram showing an embodiment of a waveform of the control signal CS1 of the optical fiber transceiver circuit 11 and the received signal RS2 of the optical fiber transceiver circuit 21 in the data transfer state. 5B shows that in the data transfer state, the control circuit 12 of the master data transmission device 10 outputs a control signal CS1 (taking a plurality of pulse waves as an example) to issue a second optical signal whose position is intermittently changed based on the input data (for example, intermittent). The ground switch communication light source 111) transmits light energy to the slave data transmission device 20 via the same fiber link OL1, and the light split device 212 of the fiber transceiver circuit 21 of the slave data transmission device 20 refracts light to the light sensing device 213 to generate a phase The corresponding data pulse, that is, the received signal RS2.

Fig. 5C is a diagram showing an embodiment of the waveform of the received signal RS1 of the optical fiber transceiver circuit 11 and the control signal CS2 of the optical fiber transceiver circuit 21 in the data return state. When the master data transmission device 10 needs to receive the returned data by the slave data transmission device 20, for example, first stop its own communication light source (such as a photodiode) to stop emitting light (or emit a certain lower intensity light), the dependent data. After detecting a long time of no light source (or a certain lower intensity light), the transmission device 20 starts to open its own communication light source 211 intermittently according to the pulsed data. Accordingly, the corresponding optical signal is transmitted to the master data transmission device 10 via the same optical fiber connection OL1, and the light splitting device 112 (such as a semi-reflective lens) of the optical fiber transceiver circuit 11 in the master data transmission device 10 refracts light to the light sensing. The device 113 generates a corresponding data pulse, that is, receives the signal RS1.

6 shows an embodiment of a communication signal waveform including a start signal bit (START), a plurality of data bits, a data check bit (PARITY), and a stop bit (STOP), wherein the plurality of data The bit system is exemplified by 8 bits, MSB represents the most significant bit, LSB represents the least significant bit, and IDLE represents the idle bit, which means no data needs to be transmitted. In an embodiment, when the optical fiber transceiver circuit 11 of the master data transmission device 10 does not transmit data, the first optical signal (for example, a lighting diode) is continuously transmitted by the communication light source 111, and the output of the data is first outputted after the start of the data transmission. The control signal CS1 of the potential L (or a potential representing a low level) represents the start signal bit, and the communication light source 111 outputs a low-intensity optical signal (or, for example, extinguishes the photodiode). The slave data transmission device 20 detects whether or not to start receiving data by detecting the low-intensity optical signal (or, for example, a no-light state). When the master data transmission device 10 completes the data transmission of each pen, it outputs a high-potential (H, that is, the light-emitting diode) control signal CS1 to indicate the stop signal bit, so that the optical transmission and reception of the master data transmission device 10 The circuit 11 will provide a first optical signal to the fiber optic link OL1 to take power from the slave data transfer device 20 to charge its interior. If the master data transmission device 10 needs to obtain the response data from the slave data transmission device 20, the fiber transceiver circuit 11 of the master data transmission device 10 turns off its communication light source 111, so that the master data transmission device 10 can receive the fiber. Link the data returned on OL1. However, the implementation of the communication signal waveform is not limited to this embodiment. When 12 bits, 16 bits, etc. can be used, the first start signal bit, the data check bit, and the stop bit can be utilized. Or an individual data pattern consisting of multiple bits.

7 and 8 are flow charts of an embodiment of data transmission between a master data transmission device and a slave data transmission device, respectively. Referring to FIG. 7, step S110 represents outputting a high potential signal, for example, correspondingly causing the communication light source 111 to emit light. Step S120 determines whether data transfer is started. If so, step S130 represents outputting a start signal, for example, outputting a low potential, and correspondingly causing the communication light source 111 to stop emitting light. Step S140 represents transmitting data. Step S150 determines whether the data transfer is completed. If so, step S160 represents outputting a stop signal, for example, outputting a high potential, and correspondingly stopping the communication light source 111 from emitting light. Step S170 decides whether or not to request back data. If so, step S180 indicates that the output low level, for example, causes the communication light source 111 to stop emitting light. Step S190 represents receiving data. Step S200 determines whether the data reception has been completed. If yes, go back to step S110; if no, continue to step S190.

For the data transmission of the slave data transmission device 20, please refer to FIG. 8. Step S310 indicates that the low potential signal is output, for example, the communication light source 211 is stopped to emit light correspondingly. Step S320 determines whether data reception is started. If so, step S330 represents receiving data. Step S335 determines whether the data reception is completed. If so, step S340 determines if data needs to be returned. If so, step S350 indicates that the fiber is to be idle. If the optical fiber connection OL1 is in an idle state, step S360 is executed to output a high potential signal, for example, to cause the communication light source 211 to emit light. Step S370 represents outputting a start signal, for example, outputting a low potential, and correspondingly causing the communication light source 211 to stop emitting light. Step S380 represents transmitting data. Step S390 determines whether the data transfer is completed. If so, step S400 indicates that the stop signal is output, for example, a high potential is output, and the communication light source 211 is accordingly stopped to emit light. In the above step S350, "waiting for the optical fiber connection idle" is to determine whether the optical fiber connection OL1 is in the state of positive light transmission (that is, whether the optical fiber connection OL1 is busy).

Figure 9 shows an embodiment of a data transmission protocol. With the embodiment of the communication protocol, the master data transmission device 10 and the slave data transmission device 20 can realize data communication in an address manner, that is, the network system can be implemented. For example, in an embodiment, the master data transmission device 10 can be implemented as a fiber-optic connection with two or more slave data transmission devices 20, respectively. Under this embodiment, the respective addresses of the two or more slave data transmission devices 20 can be assigned. For example, the slave data transmission devices 20 in the upper right and lower right of FIG. 1 respectively have a 7-bit address: 1010001, 1010010, 1010 can be regarded as a fixed pattern in the header and P2-P0 represents a settable bit.

Referring to Figure 9, the signal changes shown therein represent high and low intensity variations of the optical signal in the fiber optic connection, and may also correspond to data transmission represented by electrical signals. In FIG. 9, the master data transmission device 10 (hereinafter referred to as the transmission device) starts transmitting data with a low level (L) start signal 501, and then the slave data transmission device 20 to be designated by the master data transmission device 10 ( Address 510 (for example, 1010001), and then signal sequence 520-550 respectively represent the address and content of data read and written to the designated receiving device, after the designated receiving device confirms the operation with the transmitting device. Data reading and writing will be performed. Further, the number of bits, order, and shape of each of the following addresses, data, and instructions may be changed as needed, and thus is not limited thereto.

In Figure 9, address 510 is followed by a read/write instruction 502 (read/write in R/W), in this case read and write instruction 502 is a write instruction (WRITE). If the designated receiving device approves the address 510, an acknowledgment signal (ACK) 503 is returned. The transmitting device then sends the data to store the memory space addresses 520, 530 (16 bits in this example, such as A0-A15) in the designated receiving device, and the data data 540, 550 to be stored (in this case, two 8-bit) The element is D0-D7), and the transmitting device ends the communication with a stop signal 505 (for example, a high level or corresponding to the illumination of the communication source).

Please refer to FIG. 10, which is an embodiment of another structure of the optical fiber transceiver circuit. The optical fiber transceiver circuit 31 shown in FIG. 10 is realized by replacing the half mirror with the side light type fiber of the optical fiber transmitting and receiving circuit 21 of FIG. The communication light source 211, the light sensing device 213, and the photoelectric conversion device 214 are all placed on different sides of the beam splitting device 212. The communication light source 211 and the light sensing device 213 use the light of the side of the side light type fiber to complete the signal transmission. One end of the edge-light type optical fiber is optically coupled to the optical fiber connection OL1 and the other end is optically coupled to the photoelectric conversion device 214, thereby obtaining a larger amount of light reception. In still other embodiments, the beam splitting device can be implemented using a combination of a half mirror and a side optical fiber, or other possible beam splitters.

In addition, according to some embodiments of the present invention, the switching and sequence between the power transmission state, the data transmission state, and the data return state of the optical fiber transmission device may be according to the master data transmission device 10 and the slave data transmission device 20 in the fiber transmission device. Switching is required, for example, by a communication protocol, and a header signal is used to inform or request the other party. In one example, the power transfer state (or mode) can be switched to a data transfer state and a data return state, and vice versa. For example, the first optical fiber transceiver circuit 11 changes the first optical signal to notify one of the start signals for data transmission, thereby causing the second optical fiber transceiver circuit 21 to enter the data transmission state. For example, the second optical fiber transceiver circuit 21 sends out a start signal for informing the data return, so that the first optical fiber transceiver circuit 11 enters the data transmission state.

In the foregoing embodiments, an optical/electrical conversion element is used, which includes light to electricity and electricity to light conversion. The former can use various types of solar cells, and the latter can use a light emitting diode (LED) or a light emitting diode. (laser diode) □Implementation. Since the light energy that can be transmitted through the optical fiber is rather small, it is necessary to use a component with high conversion efficiency in the conversion of light to electricity in practice. For example, available solar cells are germanium-based solar cells: single crystal germanium, polycrystalline germanium, amorphous germanium solar cells; and gallium arsenide solar cells can be used to provide high conversion efficiency, which is characterized by The ability to absorb the full spectrum of sunlight has exceeded 40% in concentrated light.

Figure 11 is an embodiment of another configuration of the slave data transmission device. The slave data transmission device 40 illustrated in FIG. 11 is a control circuit 22 of the slave data transmission device 20 of FIG. 3 electrically coupled to the sensing unit 41 and the display 42. The transmission interface 25 can be added or deleted or used as needed. The interface of the sensing unit 41 or the display 42. Furthermore, FIG. 11 can also be considered as an embodiment of the sensing node 2 of FIG.

In the following, the embodiment of Fig. 11 will be described as an example. In FIG. 11, the photoelectric conversion device 214 of the optical fiber transceiver circuit 21 uses a gallium arsenide solar cell (Model TJ-MS201) of the company, and its maximum output no-load voltage is 2.59V, and the maximum output short-circuit □ is 2.66. mA, after charging, can provide about 1mA of continuous charging power to a 1.2V NiMH battery. The communication light source 211 of the optical fiber transceiver circuit 21, that is, the electrical-to-optical conversion element, is emitted by red light having a wavelength of 660 nm and a power of 10 mW, and is transmitted through a 3 mm optical fiber. Also use the fiber length □ is 1 meter.

The master data transmission device 10 in the server 1 is realized by the DM430-M micro-machine development board of Xin Century Electronic Technology Co., Ltd., which can work in ultra-low power mode (voltage is 5V, power is 13mA) . The development board includes Texas Instruments' low-power micro-injector MSP430F149, which is a 16-bit RISC-based FLASH single-chip, with a range of up to 64K, and six 8-bit general-purpose outputs in the chip. □ A USART communication interface, a comparator, a DCO internal oscillator and an external clock. The board works at 8MHz and can be downloaded via USB or communicated with the outside via USB.

The sensing unit 41 and the display 42 included in the sensing node 2 based on the structure of FIG. 11 are realized by a temperature and humidity sensor and an electronic paper display, respectively, and are also controlled as a control circuit by the MSP430F149 micro-processor. The test system of the temperature and humidity sensor is received after receiving the finger of the server 1, and the data is transmitted back via the optical fiber, and then the server 1 transmits the content to be displayed to the sensing node 2 via the same optical fiber. display. The temperature and humidity sensor is, for example, a DHT11 from Osong Electronics Co., Ltd., which is a temperature and humidity sensor with a corrected signal output. The temperature and humidity sensor includes a resistive wet sensor and an NTC temperature measuring device, and is connected to a high-performance 8-bit single chip. According to the communication, the system integration is simplified by a single-wire interface. . This sensor has extremely low power consumption. It consumes 0.5mA during 3V power supply measurement and 0.1mA in standby mode. It can be tested once every second. The temperature measurement range is 0~50°C, wet □ □ The range is 20~90% RH. The electronic paper display of the display 42 uses Seed Technology's E-ink Display Shield SLD01093P, which is an electronic ink display panel with a resolution of 172 x 72 dot matrix and four color gray scales, which has very low power consumption and □ It needs to be backlit, and it only needs to be used when the new content is displayed. Therefore, it can keep the last displayed page even if the power is turned off. The control and information display uses the SPI interface, the square and the micro-machine □ Knot. In this implementation example, the MSP430F149 micro-device in the sensing node 2 is normally in the standby state, and consumes only □ microamperes (μA) at the supply voltage of 3.2V, and the sensing module only receives the sense After the trigger signal of the server is measured, it enters the working state. According to the test, transmission and display, it takes about □ milliseconds (mS), and then it returns to the standby state, so the average energy consumption of the sensing module is extremely high. small.

The above embodiments of the optical fiber transmission device of the present invention provide a method for coexisting power supply and data transmission of information/communication equipment connected by optical fiber, and a fiber communication pipeline used for communication between devices as a source of working power, thereby saving equipment rooms. Extra cable required. In practice, the overall structure of the system is simplified in circuit structure and cost-saving, and at the same time reduces the cost of wiring, and has considerable practical value. Fiber optic transmission devices are more suitable for special applications such as smart homes or requiring high security or requiring special security.

In addition, in some embodiments, the optical fiber transmission device utilizes the communication protocol to implement the data communication between the master data transmission device 10 and the slave data transmission device 20 in an address manner, that is, the network system can be implemented, thereby expanding The range of applications of fiber optic transmission devices.

The embodiments described above are merely illustrative of the technical spirit and the features of the present invention, and the objects of the present invention can be understood by those skilled in the art, and the scope of the present invention cannot be limited thereto. It is to be understood that the scope of the present invention is to be construed as being limited by the scope of the present invention.

1 Server 2 Sensing node 10 Master data transmission device 11, 21, 31 Optical fiber transceiver circuit 12, 22 Control circuit 15, 25 Transmission interface 20, 40 Slave data transmission device 23 Charging circuit 24 Battery 41 Sensing unit 42 Display 111 211 communication light source 112, 212 light splitting device 113, 213 light sensing device 214 photoelectric conversion device 501 start signal 502 read and write command 503 confirmation signal 505 stop signal 510 receiving device address 520, 530 memory space address 540, 550 data data OL1, OL2 Fiber connection D1, D2 data N1, N2 signal terminal LS optical signal CS1, CS2 control signal RS1, RS2 receive signal PS power signal S110-S200, S310-S400

[Fig. 1] A block diagram showing a fiber-optic connection communication system to which an optical fiber transmission device of an embodiment of the present invention is applied. [Fig. 2] A circuit block diagram showing an embodiment of a master data transmission device. Fig. 3 is a circuit block diagram showing an embodiment of a slave data transmission device. [Fig. 4] An embodiment showing the configuration of the optical fiber transceiver circuit of the master data transmission device and the optical fiber transceiver circuit of the slave data transmission device. [Fig. 5A] A waveform diagram showing signals regarding the optical fiber transceiver circuit in the power transmission state. [Fig. 5B] A waveform diagram showing signals regarding the optical fiber transceiver circuit in the data transfer state. [Fig. 5C] A waveform diagram showing signals regarding the optical fiber transceiver circuit in the data return state. [Fig. 6] An embodiment showing a waveform of a communication signal. [Fig. 7] and Fig. 8 are flowcharts showing an embodiment of data transmission of a master data transmission device and a slave data transmission device, respectively. Fig. 9 shows an embodiment of a data transmission communication protocol of one of the aforementioned optical fiber transmission apparatuses according to the present invention. FIG. 10 is an embodiment of another configuration of a fiber optic transceiver circuit. FIG. 11 is an embodiment of another configuration of a dependent data transmission device.

11, 21 optical fiber transceiver circuit 111 communication light source 112 light splitting device 113 light sensing device 211 communication light source 212 light splitting device 213 light sensing device 214 photoelectric conversion device OL1 optical fiber connection LS optical signal CS1, CS2 control signal RS1, RS2 receiving signal PS power signal

Claims (12)

An optical fiber transmission device for transmitting data and feeding, the optical fiber transmission device comprising: a master data transmission device, comprising a first fiber transceiver circuit; and a slave data transmission device, comprising a second fiber transceiver circuit, The second optical fiber transceiver circuit is optically connected to the first optical fiber transceiver circuit; wherein, in a power transmission state, the second optical fiber transceiver circuit is configured to receive a light from the optical data link and receive the light from the master data transmission device a first optical signal for outputting a power signal, wherein the slave data transmission device is configured to store energy of the power signal as operating power of the slave data transmission device; in a data transmission state, the second fiber transceiver circuit is configured to The optical fiber connection receives a second optical signal from the master data transmission device to output a data signal in a splitting manner; the master data transmission device further includes a first control circuit, in the power transmission state, the first a control circuit controlling the first optical fiber transceiver circuit to emit the first optical signal, the first optical signal system And generating, in the data transmission state, the first control circuit controls the first optical fiber transceiver circuit to emit the second optical signal, wherein the second optical signal is transmitted by the communication light source of the first optical fiber transceiver circuit The high and low levels of data fluctuations output by the first control circuit drive the optical signals of different intensities generated by the communication light source. The optical fiber transmission device of claim 1, wherein the first optical fiber transceiver circuit comprises the communication light source, a light splitting device, and a light sensing device, wherein the light splitting device is configured to optically couple the optical fiber, and the communication light source is disposed on One side of the light splitting device transmits the first optical signal or the second optical signal through the light splitting device, and the light sensing device is disposed on the other side of the light splitting device to be optically coupled to the optical fiber for optical separation. coupling. The fiber optic transmission device of claim 2, wherein the spectroscopic device comprises at least one of a half mirror and a side optical fiber to provide a splitting function. The optical fiber transmission device of claim 1, wherein the second optical fiber transceiver circuit comprises a communication light source, a light splitting device, a light sensing device, and a photoelectric conversion device, wherein the light splitting device is configured to optically couple the optical fiber connection. a communication light source is disposed on one side of the light splitting device to emit an optical signal to the master data transmission device through the light splitting device, wherein the light sensing device and the photoelectric conversion device are respectively disposed on the other two sides of the light splitting device Optically coupled to the fiber in a split manner. The fiber optic transmission device of claim 4, wherein the spectroscopic device comprises at least one of a half mirror and an edge optical fiber to provide a splitting function. An optical fiber transmission device for transmitting data and feeding, the optical fiber transmission device comprising: a master data transmission device, comprising a first fiber transceiver circuit; and a slave data transmission device, comprising a second fiber transceiver circuit, The second optical fiber transceiver circuit is optically connected to the first optical fiber transceiver circuit; wherein, in a power transmission state, the second optical fiber transceiver circuit is configured to receive a light from the optical data link and receive the light from the master data transmission device a first optical signal for outputting a power signal, wherein the slave data transmission device is configured to store energy of the power signal as operating power of the slave data transmission device; in a data transmission state, the second fiber transceiver circuit is configured to The optical fiber connection receives a second optical signal from the master data transmission device to output a data signal in a spectroscopic manner; the slave data transmission device further includes a second control circuit and a charging circuit, in the power transmission state The second control circuit controls the second fiber transceiver circuit to receive the first optical signal and An optical signal outputting a power signal, wherein the power signal charges a battery by the charging circuit; in the data transmission state, the second control circuit controls the second fiber transceiver circuit to receive the second optical signal and The data signal is outputted at a high level and a low level of the second optical signal. The optical fiber transmission device of claim 6, wherein the first optical fiber transceiver circuit is to be first The optical signal is changed to inform the data transmission of one of the start signals, thereby causing the second fiber transceiver circuit to enter the data transfer state. The optical fiber transmission device of claim 6, wherein in a data return state, the second control circuit controls the second optical fiber transceiver circuit to emit an optical signal to the high level and low level of the data signal. The first optical fiber transceiver circuit stops the illumination of the first optical fiber transceiver circuit. The optical fiber transmission device of claim 8, wherein the second optical fiber transceiver circuit sends out a start signal for informing that the data transmission is returned, so that the first optical fiber transceiver circuit enters the data transmission state. An optical fiber transmission method for transmitting data and feeding, the method comprising: providing a first optical fiber transceiver circuit; providing a second optical fiber transceiver circuit, wherein the second optical fiber transceiver circuit is optically connected to the first optical fiber transceiver circuit; In a power transmission state: receiving, by the second fiber transceiver circuit, a first optical signal from the first fiber transceiver circuit from a fiber connection to output a power signal; and storing the energy of the power signal Actuating power as a data transmission device; in a data transmission state: receiving, by the second optical fiber transceiver circuit, a second optical signal from the first optical fiber transceiver circuit from the optical fiber connection to output a signal a data signal, wherein in the power transmission state, the first optical fiber transceiver circuit controls the first optical signal by the first control circuit, the first optical signal is a continuously generated optical signal; in the data transmission state, Controlling, by the first control circuit, the first optical fiber transceiver circuit to emit the second optical signal, the second optical signal system The first optical communication light source transceiver circuits with low-bit data of the first control circuit changes the output signal for driving the optical and quasi different intensities of the light source generates the communication. The optical fiber transmission method of claim 10, wherein the first optical fiber transceiver circuit changes the first optical signal to notify one of the data transmission start signals, thereby causing the second optical fiber transceiver circuit to enter the data transmission state. An optical fiber transmission method for transmitting data and feeding, the method comprising: providing a first optical fiber transceiver circuit; providing a second optical fiber transceiver circuit, wherein the second optical fiber transceiver circuit is optically connected to the first optical fiber transceiver circuit; In a power transmission state: receiving, by the second fiber transceiver circuit, a first optical signal from the first fiber transceiver circuit from a fiber connection to output a power signal; and storing the energy of the power signal Actuating power as a data transmission device; in a data transmission state: receiving, by the second optical fiber transceiver circuit, a second optical signal from the first optical fiber transceiver circuit from the optical fiber connection to output a signal a data signal; in a data return state, controlling the second fiber transceiver circuit to emit an optical signal to the first fiber transceiver circuit as the data signal changes to a high level, wherein the first fiber transceiver circuit stops Glowing.