Communication device

Abstract

A communication device that communicates with a second transceiver (2) as a first transceiver (1), comprising a first signal transmitting unit (12) that transmits a signal conforming to a first communication standard to the second transceiver (2), and a first signal receiving unit (13) that receives a signal from the second transceiver (2) that conforms to a second communication standard different from the first communication standard.

Description

Technical Field

[0001] The present disclosure relates to a communication device.

Background Art

[0002] There is a communication device including a first transceiver and a second transceiver. As such a communication device, for example, Patent Document 1 discloses a communication device including a first communication module and a second communication module. The first communication module and the second communication module perform two-way wireless communication using a frequency band of 60 GHz.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the communication device disclosed in Patent Document 1, the first communication module and the second communication module perform two-way wireless communication using the same frequency band. Therefore, in order to avoid interference between the signal transmitted from the first communication module and the signal transmitted from the second communication module, each of the first communication module and the second communication module has a problem that it needs to include an anti-interference filter.

[0005] The present disclosure has been made to solve the above problems, and an object thereof is to obtain a communication device capable of performing two-way communication without including an anti-interference filter.

Means for Solving the Problems

[0006] The communication device according to the present disclosure is a first transceiverIt incorporates a second transceiver. A communication device, The first transmitting and receiving device is The system includes a first signal transmitting unit that transmits a signal conforming to a first communication standard to a second transceiver, and a first signal receiving unit that receives a signal from the second transceiver that conforms to a second communication standard different from the first communication standard. The second transceiver includes a second signal transmitting unit that transmits a signal conforming to a second communication standard to the first transceiver, and a second signal receiving unit that receives a signal conforming to a first communication standard from the first transceiver. The first communication standard is a communication standard relating to optical communication, and the second communication standard is a communication standard relating to radio communication. [Effects of the Invention]

[0007] According to this disclosure, bidirectional communication can be performed without the need for interference prevention filters. [Brief explanation of the drawing]

[0008] [Figure 1] This is a configuration diagram showing a communication device according to Embodiment 1. [Figure 2] This is a configuration diagram showing the first transceiver 1 included in the communication device according to Embodiment 1. [Figure 3] This is a configuration diagram showing the second transceiver 2 included in the communication device according to Embodiment 1. [Figure 4] This is a perspective view showing a communication device according to Embodiment 1. [Figure 5] This is a plan view showing the surface of the first substrate 31 on which the first transceiver 1 according to Embodiment 1 is mounted. [Figure 6] This is a plan view showing the surface of the second substrate 32 on which the second transceiver 2 according to Embodiment 1 is mounted. [Figure 7] This is a configuration diagram showing another communication device according to Embodiment 1. [Modes for carrying out the invention]

[0009] To provide a more detailed explanation of this disclosure, the forms for implementing this disclosure will be described below with reference to the attached drawings.

[0010] Embodiment 1. Figure 1 is a configuration diagram showing a communication device according to Embodiment 1. The communication device shown in FIG. 1 includes a first transceiver 1 and a second transceiver 2. FIG. 2 is a configuration diagram showing the first transceiver 1 included in the communication device according to Embodiment 1. FIG. 3 is a configuration diagram showing the second transceiver 2 included in the communication device according to Embodiment 1.

[0011] The communication device shown in FIG. 1 includes a first transceiver 1 and a second transceiver 2. However, this is only an example, and the communication device may be a first transceiver 1 that communicates with the second transceiver 2 and includes only the first transceiver 1 as shown in FIG. 7. That is, the second transceiver 2 may be a device external to the communication device. FIG. 7 is a configuration diagram showing another communication device according to Embodiment 1.

[0012] The first transceiver 1 shown in FIG. 2 includes a wireless power supply unit 11, a first signal transmission unit 12, a first signal reception unit 13, and a control unit 14. The wireless power supply unit 11 includes a power transmission circuit 11a and a power transmission coil 11b. The wireless power supply unit 11 wirelessly supplies power for the operation of the second transceiver 2 to the second transceiver 2.

[0013] The power transmission circuit 11a is realized by, for example, an inverter. The output terminal of the power transmission circuit 11a is connected to one end of the power transmission coil 11b. The power transmission circuit 11a generates a power wave for wirelessly supplying power to the second transceiver 2. The power transmission circuit 11a supplies the power wave to one end of the power transmission coil 11b. The power for the operation of the power transmission circuit 11a may be supplied from a power source (not shown) provided outside, or may be supplied from a power source (not shown) provided inside the power transmission circuit 11a.

[0014] The power transmission coil 11b is realized by, for example, a metal pattern formed on a substrate or a winding. One end of the power transmission coil 11b is connected to the output terminal of the power transmission circuit 11a. When the power transmission coil 11b is supplied with a power wave from the power transmission circuit 11a, it generates a magnetic field in space.

[0015] The first signal transmission unit 12 transmits a signal compliant with the first communication standard to the second transceiver 2. If the first communication standard is, for example, a communication standard related to optical communication, the first signal transmission unit 12 is realized by, for example, one or more LEDs (Light Emitting Diodes). The first communication standard is a lower-rate communication standard than the second communication standard different from the first communication standard. In this case, the first signal transmission unit 12 converts the digital data output from the control unit 14 into an optical signal compliant with the first communication standard, and transmits the optical signal to the second transceiver 2.

[0016] The first signal reception unit 13 includes a reception antenna 13a and a radio wave reception circuit 13b. The first signal reception unit 13 receives a signal compliant with the second communication standard from the second transceiver 2. The first signal reception unit 13 converts the received signal into digital data, and outputs the digital data to the control unit  14.

[0017] The reception antenna 13a receives the signal transmitted from the second transceiver 2, and outputs the received signal to the radio wave reception circuit 13b. If the second communication standard is, for example, a communication standard related to radio wave communication, the radio wave reception circuit 13b is realized by, for example, a filter, an amplifier, a mixer, a signal source, and an ADC (Analog-to-Digital Converter). The filter suppresses unnecessary waves contained in the signal received by the reception antenna 13a, and outputs the signal after unnecessary wave suppression to the amplifier. The amplifier amplifies the signal after unnecessary wave suppression by the filter, and outputs the amplified signal to the mixer. A mixer converts the frequency of the amplified signal to, for example, an intermediate frequency band by mixing the amplified signal with the LO (Local Oscillator) wave output from the signal source. The signal source outputs an LO wave to the mixer. The ADC converts the signal after frequency conversion by the mixer from an analog signal to digital data and outputs the digital data to the control unit 14.

[0018] The control unit 14 is implemented, for example, by an FPGA (Field Programmable Gate Array). The control unit 14 converts the control signal for controlling the sensor 25 (described later) into digital data and outputs the digital data to the first signal transmission unit 12. The control unit 14 converts the digital data output from the first signal receiving unit 13 into sensing data for the sensor 25 and outputs the sensing data to the outside.

[0019] The second transceiver 2 shown in Figure 3 comprises a power receiving unit 21, a second signal transmitting unit 22, a second signal receiving unit 23, a control unit 24, and a sensor 25. The power receiving unit 21 includes a power receiving coil 21a and a power receiving circuit 21b. The power receiving unit 21 receives power from the wireless power supply unit 11 of the first transceiver 1. The power receiving unit 21 supplies the received power to the second signal transmitting unit 22, the second signal receiving unit 23, the control unit 24, and the sensor 25, respectively.

[0020] The power receiving coil 21a is realized, for example, by a metal pattern formed on a substrate or by a winding. One end of the power receiving coil 21a is connected to the input terminal of the power receiving circuit 21b. When the magnetic field generated by the transmitting coil 11b reaches the receiving coil 21a, a power wave is generated in the receiving coil 21a by electromagnetic induction. The power wave generated in the receiving coil 21a is supplied to the receiving circuit 21b.

[0021] The power receiving circuit 21b is implemented, for example, by a combination of a rectifier and a DC (Direct Current)-DC converter. The power receiving circuit 21b rectifies the power wave generated by the power receiving coil 21a and converts the rectified power wave into a DC signal. The power receiving circuit 21b supplies a DC signal as power for the second signal transmitting unit 22, the second signal receiving unit 23, the control unit 24, and the sensor 25, respectively.

[0022] The second signal transmission unit 22 includes a radio wave transmission circuit 22a and a transmitting antenna 22b. The second signal transmitting unit 22 operates using power supplied from the power receiving unit 21. The second signal transmission unit 22 transmits a signal conforming to the second communication standard to the first transceiver 1.

[0023] If the second communication standard is, for example, a communication standard relating to radio communication, then the radio wave transmission circuit 22a is implemented by, for example, a DAC (Digital-to-Analog Converter), a mixer, a signal source, a filter, and an amplifier. The DAC converts the digital data output from the control unit 24 into an analog signal and outputs the analog signal to the mixer. A mixer converts the frequency of an analog signal to a high-frequency band by mixing the analog signal output from the DAC with the LO wave output from the signal source. The signal source outputs the LO wave to the filter. The filter suppresses unwanted signals contained in the analog signal after frequency conversion by the mixer, and outputs the signal with the unwanted signals suppressed to the amplifier. The amplifier amplifies the signal after unwanted signals have been suppressed by the filter, and outputs the amplified signal to the transmitting antenna 22b.

[0024] The transmitting antenna 22b can be implemented, for example, by a patch antenna, a dipole antenna, or an array antenna. The transmitting antenna 22b transmits a signal conforming to the second communication standard to the first transmitting / receiving device 1 by radiating the signal output from the radio wave transmitting circuit 22a into space as radio waves.

[0025] The second signal receiving unit 23 operates using power supplied from the power receiving unit 21. The second signal receiving unit 23 receives a signal from the first transmitting / receiving device 1 that conforms to the first communication standard. The second signal receiving unit 23 converts the received signal into digital data and outputs the digital data to the control unit 24. If the first communication standard is, for example, a communication standard relating to optical communication, the second signal receiving unit 23 is implemented, for example, by one or more photodiodes (hereinafter referred to as "PD").

[0026] The control unit 24 operates using power supplied from the power receiving unit 21. The control unit 24 is implemented, for example, by an FPGA. The control unit 24 converts the sensing data output from the sensor 25 into digital data and outputs the digital data to the second signal transmission unit 22. The control unit 24 converts the digital data output from the second signal receiving unit 23 into a control signal and outputs the control signal to the sensor 25.

[0027] The sensor 25 operates using power supplied from the power receiving unit 21. Sensor 25 is, for example, a sensor in a surveillance camera, a sensor in semiconductor manufacturing equipment, a sensor in a robot arm, or a sensor in a rotating antenna. The sensor 25 senses according to the signal received by the second signal receiving unit 23 and outputs sensing data indicating the sensing result to the control unit 24. Specifically, the sensing conditions and other parameters of the sensor 25 are set according to the control signal output from the control unit 24. The sensor 25 performs sensing according to sensing conditions, etc., and outputs sensing data indicating the sensing result to the control unit 24.

[0028] If sensor 25 is a surveillance camera, the data captured by the surveillance camera is output to the control unit 24 as sensing data. Examples of sensors for semiconductor manufacturing equipment include a temperature sensor that measures the temperature around the semiconductor manufacturing equipment, or a humidity sensor that measures the humidity around the semiconductor manufacturing equipment. If sensor 25 is a sensor for semiconductor manufacturing equipment, sensing data such as temperature sensor data is output to the control unit 24. Examples of sensors for the robot arm include a camera that takes pictures of the area around the robot arm, or a pressure sensor that measures the pressure applied by the robot arm during gripping. If sensor 25 is a sensor on the robot arm, sensing data from the pressure sensor or the like is output to the control unit 24. If sensor 25 is a sensor for a rotating antenna, sensing data indicating the rotation angle of the antenna, etc., is output to the control unit 24.

[0029] Figure 4 is a perspective view showing a communication device according to Embodiment 1. Figure 5 is a plan view showing the surface of the first substrate 31 on which the first transceiver 1 according to Embodiment 1 is mounted. Figure 6 is a plan view showing the surface of the second substrate 32 on which the second transceiver 2 according to Embodiment 1 is mounted. As shown in Figures 4 and 5, the first transceiver 1 is mounted on a first circuit board 31 that is rotatable around a rotation axis 33. As shown in Figures 4 and 6, the second transceiver 2 is mounted on a second circuit board 32 that is rotatable around a rotation axis 33. The surface of the first substrate 31 and the surface of the second substrate 32 are opposite each other.

[0030] The first substrate 31 is a disc-shaped substrate that can rotate around the rotation axis 33. The first substrate 31 comprises a wireless power supply substrate 31a, an optical transmission substrate 31b, and a radio wave receiving substrate 31c, the wireless power supply substrate 31a, the optical transmission substrate 31b, and the radio wave receiving substrate 31c are arranged concentrically.

[0031] The wireless power supply board 31a is implemented, for example, by a resin substrate. A power transmission coil 11b is mounted on the surface of the wireless power supply board 31a. The power transmission circuit 11a may be mounted on the back surface of the wireless power supply board 31a, on the surface of the wireless power supply board 31a, or on a different board or housing from the first board 31. The back surface of the wireless power supply board 31a is the back side of the surface of the wireless power supply board 31a on which the power transmission coil 11b is mounted.

[0032] The optical transmitting substrate 31b is implemented, for example, by a resin substrate. Multiple LEDs, which serve as the first signal transmission unit 12, are mounted on the surface of the optical transmission substrate 31b. The multiple LEDs are connected in parallel. The control unit 14 may be mounted on the back surface of the optical transmitting board 31b, on the front surface of the optical transmitting board 31b, or on a different board or housing from the first board 31. The back surface of the optical transmitting board 31b is the back side of the front surface of the optical transmitting board 31b on which the first signal transmitting unit 12 is mounted.

[0033] The radio wave receiving board 31c is implemented, for example, by a resin substrate. A receiving antenna 13a is mounted on the surface of the radio wave receiving board 31c. The radio wave receiving circuit 13b may be mounted on the back surface of the radio wave receiving board 31c, on the surface of the radio wave receiving board 31c, or on a different board or housing from the first board 31. The back surface of the radio wave receiving board 31c is the back side of the surface of the radio wave receiving board 31c on which the receiving antenna 13a is mounted.

[0034] The second substrate 32 is a disc-shaped substrate that can rotate around the rotation axis 33. The second substrate 32 comprises a wireless power receiving substrate 32a, a radio wave transmitting substrate 32b, and an optical receiving substrate 32c, the wireless power receiving substrate 32a, the radio wave transmitting substrate 32b, and the optical receiving substrate 32c are arranged concentrically.

[0035] The wireless power receiving board 32a is implemented, for example, by a resin substrate. A power receiving coil 21a is mounted on the surface of the wireless power receiving board 32a. The power receiving circuit 21b may be mounted on the back surface of the wireless power receiving board 32a, on the surface of the wireless power receiving board 32a, or on a different board or housing, etc., from the second board 32. The back surface of the wireless power receiving board 32a is the back side of the surface of the wireless power receiving board 32a on which the power receiving coil 21a is mounted.

[0036] The radio wave transmitting board 32b is implemented, for example, by a resin substrate. Multiple antenna elements, such as those constituting an array antenna, are mounted on the surface of the radio wave transmitting board 32b as a transmitting antenna 22b. The radio wave transmitting circuit 22a may be mounted on the back surface of the radio wave transmitting board 32b, on the surface of the radio wave transmitting board 32b, or on a different board or housing, etc., from the second board 32. The back surface of the radio wave transmitting board 32b is the back side of the surface of the radio wave transmitting board 32b on which the transmitting antenna 22b is mounted.

[0037] The optical receiving substrate 32c is implemented, for example, by a resin substrate. Multiple PDs, which serve as the second signal receiving unit 23, are mounted on the surface of the optical receiving board 32c. The multiple PDs are connected in parallel. In Figures 5 and 6, the number of LEDs and the number of PDs are the same, but the number of LEDs and PDs do not need to be the same as long as optical communication is not interrupted. The control unit 24 may be mounted on the back surface of the optical receiving board 32c, on the front surface of the optical receiving board 32c, or on a different board or housing, etc., from the second board 32. The back surface of the optical receiving board 32c is the back side of the front surface of the optical receiving board 32c on which the second signal receiving unit 23 is mounted. The sensor 25 may be mounted on the wireless power receiving board 32a, the radio wave transmitting board 32b, or the optical receiving board 32c, or it may be mounted on a different board or housing, etc., from the second board 32.

[0038] The rotating shaft 33 is realized, for example, by an aluminum rod. The rotation axis 33 is located at the center of the first substrate 31 and the second substrate 32, respectively. The rotation axis 33 is an axis for independently rotating the first substrate 31 and the second substrate 32, respectively.

[0039] Next, we will explain the operation of the communication device shown in Figure 1. The first transceiver 1 supplies power to the second transceiver 2. Specifically, the power transmission circuit 11a of the wireless power supply unit 11 generates a power wave for wirelessly supplying power to the second transceiver 2. The power transmission circuit 11a supplies a power wave to one end of the power transmission coil 11b. When a power wave is supplied to the power transmission coil 11b from the power transmission circuit 11a, it generates a magnetic field in space.

[0040] The power receiving unit 21 of the second transceiver 2 receives power from the wireless power supply unit 11 of the first transceiver 1. Specifically, when the magnetic field generated by the transmitting coil 11b reaches the receiving coil 21a, a power wave is generated in the receiving coil 21a by electromagnetic induction. The power wave generated in the receiving coil 21a is then supplied to the receiving circuit 21b. The power receiving circuit 21b rectifies the power wave generated by the power receiving coil 21a and converts the rectified power wave into a DC signal. The power receiving circuit 21b supplies a DC signal as power for the second signal transmitting unit 22, the second signal receiving unit 23, the control unit 24, and the sensor 25, respectively. This enables the operation of the second transmitting and receiving device 2.

[0041] The control unit 14 of the first transceiver 1 receives control signals from an external source to control the sensor 25. The control unit 14 converts the control signal into digital data and outputs the digital data to the first signal transmission unit 12. If the first signal transmission unit 12 is implemented by an LED, the control unit 14 converts the control signal as digital data into a binary high / low voltage signal to drive the LED, and outputs the binary voltage signal to the first signal transmission unit 12. The light emitted by the LED, which is the first signal transmitting unit 12, is controlled according to a binary voltage signal. The light emitted by the LED reaches the second transceiver 2 as a signal conforming to the first communication standard.

[0042] The second signal receiving unit 23 of the second transceiver 2 receives a signal from the first transceiver 1 that conforms to the first communication standard. If the second signal receiving unit 23 is implemented by a PD, the PD receives the light emitted by the LED. The PD converts the light emitted by the LED into a binary voltage signal (high / low) and outputs the binary voltage signal as digital data to the control unit 24.

[0043] The control unit 24 acquires digital data from the second signal receiving unit 23. The control unit 24 converts digital data into a control signal and outputs the control signal to the sensor 25. The sensor 25 has its sensing conditions set, for example, according to the control signal output from the control unit 24. The sensor 25 performs sensing according to sensing conditions, etc., and outputs sensing data indicating the sensing result to the control unit 24. When the control unit 24 receives sensing data from the sensor 25, it converts the sensing data into digital data and outputs the digital data to the second signal transmission unit 22.

[0044] The second signal transmission unit 22 converts the digital data output from the control unit 24 into a signal conforming to the second communication standard, and transmits the signal conforming to the second communication standard to the first transceiver 1. If the second communication standard is, for example, a communication standard related to radio communication, the radio wave transmission circuit 22a of the second signal transmission unit 22 converts digital data into an analog signal. The radio wave transmission circuit 22a converts the frequency of the analog signal to a high frequency, suppresses unwanted waves contained in the frequency-converted analog signal, and then amplifies the frequency-converted analog signal. The radio wave transmission circuit 22a outputs the amplified analog signal to the transmitting antenna 22b. The transmitting antenna 22b transmits a signal conforming to the second communication standard to the first transmitting / receiving device 1 by radiating the analog signal output from the radio wave transmitting circuit 22a into space as radio waves.

[0045] The first signal receiving unit 13 of the first transceiver 1 receives a signal from the second signal transmitting unit 22 that conforms to the second communication standard. The first signal receiving unit 13 converts the received signal into digital data and outputs the digital data to the control unit 14. Specifically, the receiving antenna 13a of the first signal receiving unit 13 receives the signal transmitted from the second transceiver 2 and outputs the received signal to the radio wave receiving circuit 13b. If the second communication standard is, for example, a communication standard relating to radio communication, the radio wave receiving circuit 13b suppresses unwanted waves contained in the signal received by the receiving antenna 13a and amplifies the signal after the unwanted wave suppression. The radio wave receiving circuit 13b converts the frequency of the amplified signal to, for example, an intermediate frequency band, and then converts the frequency-converted signal into digital data. The radio wave receiving circuit 13b outputs digital data to the control unit 14.

[0046] When the control unit 14 receives digital data from the first signal receiving unit 13, it converts the digital data into sensing data for the sensor 25. The control unit 14 outputs the sensing data to, for example, an external device.

[0047] If the sensor 25 is, for example, a surveillance camera, the sensing data from the sensor 25 is high-rate video, and it is possible to transmit high-rate video by using radio communication with a frequency band of, for example, 60 GHz. Optical communication using LEDs and PDs involves low-rate transmission, but since control signals are also low-rate signals, it is possible to transmit them using LEDs and PDs. Optical communication using LEDs and PDs has fewer components and cheaper components compared to radio communication, making it possible to achieve lower communication costs. Because optical communication and radio communication use different communication standards, signal interference does not occur even without implementing filters to prevent interference.

[0048] In the above embodiment 1, the communication device is configured to include a first transceiver 1 and a second transceiver 2. The first transceiver 1 includes a first signal transmitting unit 12 that transmits a signal conforming to a first communication standard to the second transceiver 2, and a first signal receiving unit 13 that receives a signal from the second transceiver 2 that conforms to a second communication standard different from the first communication standard. The second transceiver 2 includes a second signal transmitting unit 22 that transmits a signal conforming to a second communication standard to the first transceiver 1, and a second signal receiving unit 23 that receives a signal from the first transceiver 1 that conforms to the first communication standard. Therefore, the communication device can perform bidirectional communication without providing a filter to prevent interference.

[0049] In Embodiment 1, the first transceiver 1 is mounted on a first substrate 31 that is rotatable around a rotation axis 33, and the second transceiver 2 is mounted on a second substrate 32 that is rotatable around the rotation axis 33, with the first substrate 31 and the second substrate 32 facing each other, thus configuring the communication device. Therefore, the communication device can, for example, mount a sensor 25 whose sensing range changes.

[0050] Embodiment 1 describes a communication device in which a first signal transmitting unit 12 transmits light as a signal conforming to a first communication standard, and a second signal receiving unit 23 receives light as a signal conforming to the first communication standard. The first and second communication standards can be different communication standards. For example, the first signal transmitting unit 12 may transmit ultrasonic waves as a signal conforming to the first communication standard, and the second signal receiving unit 23 may receive ultrasonic waves as a signal conforming to the first communication standard.

[0051] It should be noted that this disclosure allows for modifications of any component of the embodiment, or the omission of any component of the embodiment. [Industrial applicability]

[0052] The communication device described herein is a first transceiver that communicates with a second transceiver, and comprises a first signal transmitting unit that transmits a signal conforming to a first communication standard to the second transceiver, and a first signal receiving unit that receives a signal from the second transceiver that conforms to a second communication standard different from the first communication standard, and is suitable for communication devices as it can perform bidirectional communication without providing a filter to prevent interference. [Explanation of Symbols]

[0053] 1 First transmitting / receiving device, 2 Second transmitting / receiving device, 11 Wireless power supply unit, 11a Power transmission circuit, 11b Power transmission coil, 12 First signal transmission unit, 13 First signal receiving unit, 13a Receiving antenna, 13b Radio wave receiving circuit, 14 Control unit, 21 Power receiving unit, 21a Power receiving coil, 21b Power receiving circuit, 22 Second signal transmission unit, 22a Radio wave transmission circuit, 22b Transmitting antenna, 23 Second signal receiving unit, 24 Control unit, 25 Sensor, 31 First circuit board, 31a Wireless power supply board, 31b Optical transmission board, 31c Radio wave receiving board, 32 Second circuit board, 32a Wireless power receiving board, 32b Radio wave transmission board, 32c Optical receiving board, 33 Rotating shaft.

Claims

1. A communication device having a first transceiver and a second transceiver, The first transmitting and receiving device is A first signal transmission unit that transmits a signal conforming to a first communication standard to the second transceiver, The system includes a first signal receiving unit that receives signals from the second transmitting and receiving device that conform to a second communication standard different from the first communication standard, The second transmitting and receiving device is A second signal transmission unit that transmits a signal conforming to the second communication standard to the first transceiver, The system comprises a first transmitting and receiving device and a second signal receiving unit that receives signals conforming to the first communication standard, The first communication standard described above is: It is a communication standard related to optical communication. The second communication standard mentioned above is, It is a communication standard related to radio communications. A communication device characterized by the following features.

2. The first transmitting and receiving device is The second transmitting and receiving device is equipped with a wireless power supply unit that wirelessly supplies power to it. The second transmitting and receiving device is, The unit includes a power receiving unit that receives power from the aforementioned wireless power supply unit. The communication device according to claim 1, characterized by the features described above.

3. The second transmitting and receiving device is, The system includes a sensor that senses according to the signal received by the second signal receiving unit and outputs sensing data indicating the result of the sensing, The second signal transmission unit described above is: The sensing data output from the sensor is transmitted to the first transceiver as a signal conforming to the second communication standard. The communication device according to claim 1, characterized by the features described above.

4. The first transmitting and receiving device is It is mounted on a first substrate that can rotate around a rotation axis, The second transmitting and receiving device is It is mounted on a second substrate that is rotatable around the aforementioned rotation axis, The first substrate and the second substrate are facing each other. A communication device according to any one of claims 1 to 3, characterized by the following:

5. The first transmitting and receiving device is The second transmitting and receiving device is equipped with a wireless power supply unit that wirelessly supplies power to it. The second transmitting and receiving device is The wireless power supply unit is equipped with a power receiving unit that receives power from the aforementioned wireless power supply unit, The first signal transmitting unit, the first signal receiving unit, and the wireless power supply unit are arranged concentrically with respect to the first substrate. The second signal transmitting unit, the second signal receiving unit, and the power receiving unit are arranged concentrically with respect to the second substrate. The communication device according to feature 4.

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