JP2005328235A - Wireless-device remote wire-control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wireless-device remote wire-control system by which states of a wireless-device can be grasped by the remote controller side regardless of whether data communication is executed or not in the wireless-device, and the level of a received voice signal listened by the remote controller side is unaffected by frequency characteristics of a transmission line. <P>SOLUTION: The remote controller 1 executes the wire-control of the wireless-device 2. A voice information signal, a control signal, and a signal generated by compositing a first wireless transmission data signal with an adder 26, are transmitted through a cable from the remote controller 1. The wireless-device 2 is operated on the basis of the control signal transmitted through a cable by the remote controller 1, and transmits the voice information signal and the first wireless transmission data signal by radio. The remote controller 1 receives the voice information signal transmitted through a cable by the wireless-device 2; and a state modulating signal showing operating states of the wireless-device 2 through a cable, reproduces the voice, displays the transmitting power and the reception electric field strength of the wireless-device 2 on an output device 20, and also, controls a gain of a variable gain amplifier 30 so that the output of the variable gain amplifier 30 becomes constant on the basis of a level of the state modulating signal. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a system for performing remote wired control of a wireless device.

  When a wireless device is installed and remotely controlled, control by a wireless line using an ultra high frequency band is often performed. However, remote control using a wireless line is susceptible to interference, noise, and the like, and there is a problem that control becomes impossible when there is an obstacle between the remote control device and the wireless device.

  Therefore, as a system free from such a problem, there is a system for remotely controlling a wireless device by wired communication. Hereinafter, the wireless device remote wired control system is assumed. This system includes a wireless device and a remote control device capable of controlling the wireless device by wired communication. A voice information signal, a data modulation signal, and a control signal are wired from the remote control device, and the wireless device wirelessly transmits the voice information signal and the data modulation signal while operating according to the control signal wired from the remote control device. In addition, the wireless device wire-transmits a voice information signal received wirelessly by itself, a data modulation signal received wirelessly by itself, and a response signal to the control signal, and the remote control device side receives these signals by wire. In this system, since communication between the remote control device and the wireless device is performed by wired communication, there is no problem as described above in the system that performs remote control using a wireless line, and stable control can be realized. .

  FIG. 5 shows a conventional configuration of the remote control device 101 constituting the wireless device remote wired control device system, and FIG. 6 shows a conventional configuration of the wireless device 102 constituting the system. First, an operation until a radio wave is output in the wireless device 102 will be described. The amplitude modulator 12 amplitude-modulates the transmission audio signal input from the microphone in the intermediate frequency band, and outputs a transmission audio modulation signal. The transmission voice modulation signal is amplified by the fixed gain voice amplifier 34. Here, the transmission audio signal is not necessarily amplitude-modulated, and the transmission audio signal may be amplified by the fixed gain audio amplifier 34. Hereinafter, both the audio signal and the audio modulation signal are referred to as an audio information signal. In addition, in order to avoid saturation of the audio signal in the circuit after the microphone, a means for limiting the amplitude may be provided.

  The operator performs operations such as power operation of the wireless device 102 using the operation unit 14, determination of a frequency when transmitting / receiving radio signals on the wireless device 102 side, turning on / off of radio transmission radio waves, adjustment of antenna directivity, adjustment of transmission / reception levels I do. A control signal for controlling the wireless device 102 is output from the control unit 10 by operating the operation device 14. The control signal is input to the PSK modulator 24, and the PSK modulator 24 outputs a control modulation signal obtained by PSK modulation.

  The control unit 10 is provided with a first wireless transmission data input device 16, and when data is input to the device, the control unit 10 outputs a first wireless transmission data signal. Although various devices can be connected to the first wireless transmission data input device 16, for example, there is an electric key for generating a Morse signal. The first wireless transmission data signal output from the control unit 10 is input to the FSK modulator 22, and the FSK modulator 22 outputs a first wireless transmission data modulated signal obtained by FSK modulation.

  The adder 26 combines the transmission voice information signal, the control modulation signal, and the first radio transmission data modulation signal, and outputs a transmission combined signal. The transmission composite signal is wired from the remote control device 101 via the 2-wire 4-wire converter 28.

  The wireless device 102 receives the transmission composite signal by wire. The transmission composite signal received by wire is input to the variable gain amplifier 30 via the 2-wire 4-wire converter 28. The variable gain amplifier 30 is subjected to automatic gain control so that an output signal of a certain level can be obtained.

  The FSK detector 42 detects the first radio transmission data modulation signal included in the transmission composite signal output from the variable gain amplifier 30, and outputs the first radio transmission data detection signal. The gain of the variable gain amplifier 30 is automatically controlled so that the level of the first radio transmission data detection signal becomes a predetermined level. The FSK demodulator 44 extracts the first wireless transmission data signal from the first wireless transmission data detection signal and inputs it to the control unit 10. The first radio transmission data signal is used as a control signal for controlling the control unit 10, is subjected to PSK modulation, and is input to the transmitter 46.

  The fixed gain audio signal amplifier 34 amplifies the transmission audio information signal included in the transmission composite signal and inputs it to the transmitter 46. The transmitter 46 converts the transmission voice information signal and the first radio transmission data signal subjected to PSK modulation into a radio frequency band, and wirelessly transmits the radio signal from the antenna 50 as a radio wave signal. In this way, data such as a voice signal from the remote control device 101 and a Morse signal input to the first wireless transmission data input device 16 is transmitted from the transmission device.

  The PSK demodulator 40 inputs a control signal obtained by demodulating the control modulation signal included in the transmission composite signal to the control unit 10. The control unit 10 outputs an operation command signal to each unit of the wireless device 102 based on the control signal. The transmitter 46 determines the transmission frequency, turns on / off the transmission wave, changes the antenna directivity, adjusts the transmission level, and the like based on the control data.

  In radio apparatus 102, FSK detector 42, fixed gain audio amplifier 34, and PSK demodulator 40 are provided with a filter 32, and signals in frequency bands corresponding to the respective units are extracted.

  Next, the operation until the signal received by the wireless device 102 reaches the remote control device 101 will be described. The received audio information signal received from the antenna 50 is converted into an intermediate frequency band by the receiver 48 and amplified by the fixed gain audio amplifier 34. Here, the receiver 48 can be configured not only to convert the received audio information signal into the intermediate frequency band but also to perform demodulation and output the received audio signal.

  In addition, the control unit 10 outputs an operation command signal to each unit of the wireless device 102 based on a control signal transmitted by wire from the remote control device 101, and then information indicating that the operation is normally terminated from each unit or abnormal termination A response signal having information indicating that the above has been performed is input to the PSK modulator 24. The PSK modulator 24 PSK modulates the input response signal and outputs a response modulation signal. The received audio information signal and the response modulation signal are combined in the adder 26, and the adder 26 further adds a level indicator signal used for automatic gain control on the remote control device 101 side. This level indicator signal is emitted from the level indicator signal generator 52. In the adder 26, a reception synthesized signal obtained by synthesizing the received audio information signal, the response modulation signal, and the level reference signal is wired and transmitted from the wireless device 102 via the two-wire four-wire converter 28.

  The wireless device 101 receives the received composite signal by wire. The received composite signal received by wire is input to the variable gain amplifier 30 via the 2-wire 4-wire converter 28. The variable gain amplifier 30 is subjected to automatic gain control so that an output signal of a certain level can be obtained. The reception composite signal level detector 38 detects a level indicator signal included in the reception composite signal output from the variable gain amplifier 30. The gain of the variable gain amplifier 30 is automatically controlled so that the level of the detected level indicator signal is constant.

  The PSK demodulator 40 demodulates the response modulation signal included in the received combined signal, extracts the response signal, and inputs the response signal to the control unit 10. Based on this response signal, the control unit 10 outputs to the output device 20 information indicating that the operation has been normally completed or abnormally ended.

  The fixed gain audio amplifier 34 amplifies the received audio information signal included in the received synthesized signal output from the variable gain amplifier 30, and the audio demodulator 36 demodulates the received audio information signal and outputs it to the speaker. Needless to say, when the received audio information signal is a received audio signal, the received audio can be reproduced by the speaker without using the audio demodulator 36.

  In the remote control device 101, similarly to the wireless device 102, the reception composite signal level detector 38, the PSK demodulator 40, and the fixed gain audio signal amplifier 34 are provided with a filter 32, and signals corresponding to the respective devices. Is extracted.

  In the above description, when the transmission voice information signal and the first radio transmission data modulation signal are transmitted and the reception voice information signal is received in the radio apparatus 102, that is, as the first radio transmission data while performing radio voice communication. The case where a Morse code is transmitted has been described. In this conventional configuration, the second radio transmission data modulation signal is transmitted in the frequency band of the control modulation signal in the wired communication between the radio apparatus 102 and the remote control apparatus 101, and the radio reception data modulation signal is transmitted in the frequency band of the response modulation signal. Can be further transmitted, and wireless data communication using the wireless device 102 is possible. As a result, not only voice transmission / reception but also wireless high-speed communication such as computer program files and image data is performed.

  First, the transmission operation of the second wireless transmission data will be described. The control unit 10 is provided with a second wireless transmission data input device 18, and when data such as image data is input to the device, the control unit 10 outputs a second wireless transmission data signal, and PSK. Input to the modulator 24. The PSK modulator 24 inputs a second radio data modulation signal, which is a signal obtained by PSK modulation of the second radio transmission data signal, to the adder 26 and adds it as a signal constituting the transmission composite signal. The second wireless transmission data signal is input from the PSK demodulator 40 to the control unit 10 on the wireless device 102 side, subjected to PSK modulation again, and then input to the transmitter 46 and wirelessly transmitted.

  Next, the operation of receiving wireless reception data will be described. The radio reception data modulation signal received from the antenna 50 is demodulated into data by the receiver 48 and input to the PSK modulator 24. The PSK modulator 24 inputs a radio reception data modulated signal obtained by PSK modulation of the radio reception data signal demodulated into data to the adder 26 and adds it as a signal constituting the reception composite signal. On the remote control device 101 side, the PSK demodulator 40 demodulates the radio reception data modulation signal included in the reception composite signal and inputs the radio reception data to the control unit 10. The control unit 10 outputs this data to the output device 20. The output device 20 is a storage device if the wireless reception data is an electronic computer program, and an image forming device if the wireless reception data is image data.

  FIG. 7 shows the frequency configuration of signals used for wired communication of the wireless remote control wired control system. Signals from the remote control device 101 to the wireless device 102 are arranged in the order of the transmission voice information signal, the control signal, the second transmission data modulation signal, and the first transmission data modulation signal from the lowest frequency. Hereinafter, a line based on a signal transmitted from the remote control device 101 to the wireless device 102 is referred to as a downlink. In addition, signals transmitted from the wireless device 102 to the remote control device 101 are arranged in the order of a received voice information signal, a response signal or a received data modulation signal, and a level index signal from the lowest frequency. Hereinafter, a line based on a signal transmitted from the wireless apparatus 102 to the remote control apparatus 101 is referred to as an uplink. Here, frequency separation is achieved between the upper and lower lines except for the transmission voice information signal and the reception voice information signal. This is because the control signal, response signal, and data modulation signal use angle-modulated waves such as PSK and FSK, and phase errors increase due to the reflected waves generated at the receiving end of the wireless device 102 and the receiving end of the remote control device 101. This is to avoid being unable to demodulate. On the other hand, the transmitted audio information signal and the received audio information signal are amplitude-modulated signals of an audible frequency band or an audible frequency band, so that the influence of reflected waves is small, and the same frequency band can be used for the upper and lower lines it can.

The wireless device remote wired control system having the conventional configuration has mainly two problems.
The first problem is that it is impossible for the remote control device 101 to grasp the state of the wireless device 102 while the reception data modulation signal is transmitted from the wireless device 102 to the remote control device 101. . Here, the state of the wireless device 102 includes the received electric field strength, the transmission power level, and the like at the wireless device 102. In principle, the state on the wireless device 102 side can be grasped on the remote control device 101 side by using a response signal. However, while the wireless device 102 is receiving data using the received data modulation signal, the frequency band occupied by the received data modulation signal and the response modulation signal is the same. The signal to be represented cannot be further superimposed and transmitted.

  The second problem is that the sound signal level heard on the remote control device 101 side is affected by the frequency characteristics of the transmission line. Since the occupied bandwidth of the signal used for the uplink is remarkably wide, there is a large difference in the attenuation received on the transmission line between the received voice information signal and the level indicator signal. In general, the transmission line tends to have a greater attenuation as the frequency band becomes higher. Therefore, when automatic gain control amplification is performed based on the level indicator signal, the level of the received audio information signal becomes the response signal as shown in FIG. Or, it becomes larger than the radio reception data signal. If this received audio information signal is amplified as it is by the fixed gain audio amplifier 34 and the audio is listened to, a different level of audio will be heard every time the characteristics of the transmission line change, resulting in inconvenience.

  The present invention has been made for such a problem, and it is possible to grasp the state of the wireless device on the remote control device side regardless of whether or not data communication is performed in the wireless device. Provided are a device remote wired control system, and a wireless device remote wired control system in which the level of a received audio signal heard on the remote control device side is not affected by the frequency characteristics of a transmission line.

  The present invention wire-transmits a voice information signal to be transmitted wirelessly and a control signal for controlling the wireless device from a remote control device, and the wireless device receives the control signal by wire and based on the control signal. The wireless control device wirelessly transmits the voice information signal transmitted by the remote control device, and the wireless device wirelessly receives the voice information signal received by the remote control device and the response to the control signal received by wire from the remote control device. A wireless device remote wired comprising the remote control device and the wireless device, wherein the remote control device wire-receives a voice information signal wired by the wireless device and the response signal. In the control system, the wireless device transmits a combined signal obtained by combining the audio information signal, the response signal, and a status signal indicating the status of the wireless device. The remote control device receives the composite signal by wire, adjusts the level of the composite signal received by wire based on the level of the status signal, extracts the voice from the audio information signal, and reproduces it. The status of the wireless device is displayed based on the status signal.

  In the present invention, the remote control device wire-transmits a voice information signal to be wirelessly transmitted, a data modulation signal to be wirelessly transmitted, and a control signal for controlling the wireless device. The signal is wired and operated based on the control signal, and the remote control device wirelessly transmits the voice information signal and the data modulation signal transmitted by wire, and the wireless device receives the signal wirelessly. The remote control device wire-transmits the voice information signal and the data modulation signal received wirelessly by itself, and the remote control device wire-receives the voice information signal and the data modulation signal wire-transmitted by the wireless device. In a wireless device remote wired control system comprising a control device and the wireless device, the wireless device includes the audio information signal, the data modulation signal, and the wireless device. The remote control device wire-receives the combined signal obtained by combining the status signal indicating the operation status, and based on the level of the status signal, the remote control device receives the combined signal level. Adjusting, extracting and reproducing sound from the sound information signal, extracting data from the data modulation signal, and displaying a state of the wireless device based on the state signal.

  Further, in the wireless device remote wired control system according to the present invention, the remote control device separates the voice information signal included in the synthesized signal from the synthesized signal after the level of the synthesized signal is adjusted, It is preferable that the level is adjusted so that the level is constant.

  Further, in the wireless device remote wired control system according to the present invention, the status signal is an FSK signal, detected by the FSK detector included in the remote control device, and the combined signal received by the remote control device via wire is: It is preferable to amplify by a variable gain amplifier whose gain is adjusted based on the level of the detection signal output from the FSK detector.

  In the wireless device remote wired control system according to the present invention, the voice information signal included in the synthesized signal is separated from the synthesized signal by a filter provided at the output of the variable gain amplifier, and has a certain level. It is preferable to amplify by a variable gain amplifier whose gain is adjusted so that a signal is output.

  In the wireless device remote wired control system according to the present invention, the status signal included in the combined signal includes information on the intensity of the electromagnetic wave signal received wirelessly when the wireless device is in a wireless reception state. When the wireless device is in a wireless transmission state, the wireless device has information on the power of the electromagnetic wave signal wirelessly transmitted by the wireless device, and the remote control device wirelessly transmits the wireless device based on the status signal. It is preferable to display the intensity of the electromagnetic wave signal when in a reception state and the power of the electromagnetic wave signal when the wireless device is in a wireless transmission state.

  In the wireless device remote wired control system according to the present invention, the wireless device includes a temperature sensor, and the status signal included in the composite signal includes information output from the temperature sensor, and the remote control device Is preferably configured to display the temperature of the wireless device based on the status signal.

  In the present invention, the remote control device wire-transmits a voice information signal to be wirelessly transmitted, a data modulation signal to be wirelessly transmitted, and a control signal for controlling the wireless device. The remote control device and the wireless device, which receive a signal by wire and operate based on the control signal, and wirelessly transmit the voice information signal and the data modulation signal which are wired by the remote control device. In the wireless device remote wired control system, the remote control device wire-transmits a composite signal obtained by combining the voice information signal, the control signal, and the data modulation signal, and the wireless device transmits the composite signal. Is received by wire, and based on the level of the data modulation signal, the level of the composite signal received by wire is adjusted, and the audio information signal included in the composite signal is After said level of the composite signal is adjusted separately from the composite signal, such that a constant level, and adjust the level, the audio information signal, characterized in that the data modulated signal and wirelessly transmits.

  Further, the present invention controls a voice information signal to be wirelessly transmitted, a first data modulated signal to be wirelessly transmitted, a second data modulated signal to be wirelessly transmitted, and a wireless device from a remote control device. The control signal is transmitted by wire, and the wireless device receives the control signal by wire and operates based on the control signal, and the remote control device wire-transmits the voice information signal and the first data. In a wireless device remote wired control system comprising the remote control device and the wireless device for wirelessly transmitting a modulation signal and the second data modulation signal, the remote control device includes the voice information signal, The wireless device transmits a combined signal obtained by combining the first data modulation signal and the second data modulation signal by wire, and the wireless device receives the combined signal by wire and transmits a signal of the first data modulation signal. And adjusting the level of the synthesized signal received via wire, separating the audio information signal included in the synthesized signal from the synthesized signal after the level of the synthesized signal is adjusted, The level is adjusted so that the audio information signal, the first data modulation signal, and the second data modulation signal are wirelessly transmitted.

  In the wireless device remote wired control system according to the present invention, the data modulation signal is an FSK signal, detected by an FSK detector included in the wireless device, and the combined signal received by the wireless device via wire is It is preferable to amplify by a variable gain amplifier whose gain is adjusted based on the level of the detection signal output from the FSK detector.

  In the wireless device remote wired control system according to the present invention, the first data modulation signal is an FSK signal, detected by the FSK detector included in the wireless device, and the combined signal received by the wireless device by wire. Is preferably amplified by a variable gain amplifier whose gain is adjusted based on the level of the detection signal output from the FSK detector.

  In the wireless device remote wired control system according to the present invention, the voice information signal included in the synthesized signal is separated from the synthesized signal by a filter provided at the output of the variable gain amplifier, and has a certain level. It is preferable to amplify by a variable gain amplifier whose gain is adjusted so that a signal is output.

  According to the present invention, a wireless device remote wired control system capable of grasping the state of the wireless device on the remote control device side regardless of whether or not data communication is being performed in the wireless device, and the remote control device side Thus, it is possible to realize a system in which the level of the received audio signal listened to at 1 is not influenced by the frequency characteristics of the transmission line.

  In addition, as a signal indicating the state of the wireless device on the remote control device side, in addition to a signal having information on the received electric field strength and transmission power level in the wireless device, the temperature of the wireless device is detected and the signal is sent to the remote control device side. Use a signal from a temperature sensor to transmit the signal, or a signal from an object detection sensor to notify the remote control device when a person other than the operator approaches the place where the wireless device is installed. Can do.

  An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a remote control device 1 constituting the wireless device remote wired control system, and FIG. 2 shows a wireless device 2 constituting the system. Here, the same components as those in FIGS. 5 and 6 are given the same reference numerals, and the description thereof is omitted.

  Now, it is assumed that the wireless device 2 transmits a transmission radio wave with a certain transmission power and receives a radio wave with a certain intensity. The transmitter 46 outputs a signal having transmission power information, and the receiver 48 outputs a signal having reception field strength information. The display 54 receives the transmission power and the reception field strength based on the input of these signals. Is displayed. An analog signal is preferably used as the signal input to the display 54.

  The wireless device 2 is provided with a sensor 58 for detecting the state. As the sensor 58, a temperature sensor, an object detection sensor, or the like is applied. The temperature sensor measures the temperature inside the wireless device 2 and outputs a detection signal including temperature information. In particular, since the transmitter 46 operates with high power, the transmitter 46 generates a large amount of heat, and the wireless device 2 may be burned out due to a temperature rise due to abnormal operation. Therefore, a damage accident can be avoided in advance by providing a temperature sensor and grasping the temperature. As the temperature sensor, a device such as a thermistor whose resistance value changes with temperature can be used.

  The object detection sensor outputs a detection signal informing that when a person other than the operator or a suspicious object approaches the wireless device 2. As an object detection sensor, infrared rays emitted from the human body are detected by an infrared sensor and a signal is output, or infrared rays for searching for an object are transmitted and reflected by a suspicious object are detected by an infrared sensor. A device that outputs a signal can be used. In the present embodiment, the detection signal is preferably output as an analog signal.

  A signal having information on transmission power, a signal having information on received electric field strength, and a detection signal are inputted to the situation signal selection means 56, and a signal to be outputted is selected based on the operation command signal of the control unit 10, and the situation signal Is output as This operation command signal is generated when the operation device 14 is operated in the remote control device 1 as in the conventional configuration.

  The status signal output from the status signal selection means 56 is converted into a digital signal by the A / D converter 60 and then input to the FSK modulator 22. At the time of A / D conversion, an identification signal indicating which of the above three types of signals is added to the status signal, and the remote control device 1 side determines the status signal based on the identification signal. The type can also be determined. Specifically, the identification signal is preferably expressed by occupying 1 to 2 digits in the status signal converted into a digital signal. The FSK modulator 22 performs FSK modulation on the status signal and outputs a status modulation signal. The situation modulation signal is added by the adder 26 as a signal constituting the reception composite signal.

  FIG. 7 shows the frequency configuration of the upper and lower lines in the wireless device remote wired control system according to the present invention. The difference from the frequency configuration in the conventional configuration is that the remote control device 1 uses a situation modulation signal as a signal for obtaining a reference of the level of the received composite signal to effectively use the frequency. That is, instead of the conventional level index signal that represents the level of the received composite signal with the amplitude value, the amplitude value not only represents the level of the received composite signal but also the frequency change has information about the situation on the wireless device 2 side. By using the situation modulation signal, the frequency is effectively used. Since the situation modulation signal is an FSK modulation signal, the frequency change of the signal has information on the modulated signal and the amplitude does not have information on the modulated signal. In the wireless device remote wired control system according to the present invention, such a property of the FSK modulation signal is utilized and used as a level index.

  In the remote control device 1, a status modulation signal is extracted from the received combined signal output from the variable gain amplifier 30 through the filter 32. The FSK detector 42 detects the extracted signal and outputs a situation detection signal. The variable gain amplifier 30 is subjected to automatic gain control so that the level of the situation detection signal becomes a constant level. The situation detection signal is demodulated by the FSK demodulator 44, converted to an analog signal by the D / A converter 64, and input to the output device 20. Further, the demodulated status detection signal is also input to the type determination unit 62, and a determination indicating whether the status signal is a signal having transmission power information, a signal having reception field strength information, or a detection signal. The signal is output to the control unit 10. Based on the determination signal, the control unit 10 switches the mode of the output device 20 to a mode corresponding to the type of the status signal. Further, this switching may be performed via the control unit 10 in the remote control device 1 together with the operation when the command to the status signal selection unit 56 of the wireless device 2 is first performed by the operation unit. Here, as the output device 20, an indicator or the like indicating the transmission power or the received electric field strength, or the wireless device temperature can be considered.

  Further, the wireless device remote wired control system according to the present invention is further characterized in that the level of the audio signal heard on the remote control device 1 side is not affected by the frequency characteristics of the transmission line.

  When a reception composite signal having a frequency configuration as shown in FIG. 3B is wired from the wireless device 2, the level of the high frequency band is reduced at the wired reception end of the remote control device 1 due to the attenuation of the transmission line. descend. FIG. 4A shows this state. This is due to the general characteristic of the transmission line that the loss increases and the amount of attenuation increases as the frequency increases. In the remote control device 1, the gain of the variable gain amplifier 30 is uniformly determined over the entire area of the received received composite signal based on the level of the status modulation signal in the highest frequency. Significantly increase the level of the information signal. This is shown in FIG. 4 (b). The level difference between the received audio information signal and the status modulation signal varies depending on the length of the transmission line, the installation state, and the like, and appears as a volume variation when listening. In the remote control device 1 in the wireless device remote wired control system according to the present invention, the received voice information signal is amplified by the variable gain voice amplifier 66 that has been subjected to the automatic gain control so that the output level becomes constant, thereby changing the volume. Is suppressed. The output of the variable gain audio amplifier 66 is demodulated by the audio demodulator 36 as in the conventional configuration, and the received audio is reproduced from the speaker. Further, when the received audio information signal is a received audio signal, the received audio can be reproduced by the speaker without using the audio demodulator 36, as in the conventional configuration.

  In the wireless device 2 of FIG. 2, the transmission voice information signal included in the transmission composite signal received by wire is amplified by the fixed gain voice amplifier 34. This is because, as shown in FIG. 3A, the frequency difference between the transmission voice information signal on the downlink and the first transmission data modulation signal is compared with the frequency difference between the reception voice information signal on the uplink and the situation modulation signal. This is because the level of the transmitted audio information signal hardly changes and there is no need to adjust the level of the signal. However, when the frequency configuration is such that the frequency difference between the transmission voice information signal and the first transmission data modulation signal is large, the level of the transmission voice information signal is remarkably increased, and the amplitude is saturated and distorted at the input of the transmitter 46. May occur. Therefore, by using the variable gain audio amplifier 66 that has been gain-controlled so that the output level is constant in place of the fixed gain audio amplifier 34, distortion due to saturation can be avoided.

  In the above description, an example in which a temperature sensor or an object detection sensor is applied as the sensor 58 used in the wireless device 2 has been taken, but various sensors of humidity, wind direction, and wind force are used to The situation can be observed.

  As mentioned above, although an example of embodiment of this invention was demonstrated, this invention is not limited to this example at all, Of course, in the range which does not deviate from the summary of this invention, it can implement with a various form. It is.

It is a figure which shows the structure of the remote control apparatus which comprises the radio | wireless apparatus remote wired control system which concerns on this invention. It is a figure which shows the structure of the radio | wireless apparatus which comprises the radio | wireless apparatus remote wired control system which concerns on this invention. It is a figure which shows the frequency structure of the transmission synthetic signal and the reception synthetic signal in the radio | wireless apparatus remote wired control system which concerns on this invention. It is a figure explaining that the level of a received synthetic signal receives change with the frequency characteristic of a transmission line. It is a figure which shows the structure of the remote control apparatus which comprises the conventional radio | wireless apparatus remote wired control system. It is a figure which shows the structure of the radio | wireless apparatus which comprises the conventional radio | wireless apparatus remote wired control system. It is a figure which shows the frequency structure of the transmission synthetic | combination signal and reception synthetic | combination signal in the conventional radio | wireless apparatus remote wired control system. It is a figure explaining that the level of a received synthetic signal receives change with the frequency characteristic of a transmission line in the conventional composition.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Remote control apparatus, 2 Wireless apparatus, 10 Control part 12 Amplitude modulator, 14 Operation device, 16 1st wireless transmission data input apparatus, 18 2nd wireless transmission data input apparatus, 20 Output apparatus, 22 FSK modulator, 24 PSK modulator, 26 adder, 28 2-wire 4-wire converter, 30 variable gain amplifier, 32 filter, 34 fixed gain audio amplifier, 36 audio demodulator, 38 received composite signal level detector, 40 PSK demodulator, 42 FSK detector, 44 FSK demodulator, 46 transmitter, 48 receiver, 50 antenna, 52 level indicator signal generator, 54 indicator, 56 status signal selection means, 58 sensor, 60 A / D converter, 62 type determination , 64 D / A converter, 66 variable gain audio amplifier.

Claims (12)

From the remote control device, a voice information signal to be wirelessly transmitted and a control signal for controlling the wireless device are wired and transmitted.
In a wireless device, the control signal is wired to receive and operates based on the control signal, and the remote control device wirelessly transmits the voice information signal transmitted by wire,
From the wireless device, the voice information signal received wirelessly by itself, and a response signal to the control signal wiredly received from the remote control device, wired transmission,
In the remote control device, in the wireless device remote wired control system comprising the remote control device and the wireless device, which wire-receives the voice information signal wired by the wireless device and the response signal,
The wireless device includes:
Wired transmission of a synthesized signal in which the voice information signal, the response signal, and the status signal indicating the status of the wireless device are synthesized,
The remote control device is:
Wired reception of the composite signal,
Based on the level of the status signal, adjust the level of the composite signal received by wire,
A wireless device remote wired control system, wherein a voice is extracted from the voice information signal and reproduced, and the status of the wireless device is displayed based on the status signal. From the remote control device, a voice information signal to be wirelessly transmitted, a data modulation signal to be wirelessly transmitted, and a control signal for controlling the wireless device are wired and transmitted.
In the wireless device, the control signal is received by wire and operates based on the control signal, and the remote control device wirelessly transmits the voice information signal and the data modulation signal transmitted by wire,
From the wireless device, by wire transmission of the voice information signal received wirelessly by itself and the data modulation signal received wirelessly by itself,
In the remote control device, in the wireless device remote wired control system comprising the remote control device and the wireless device, which wire-receives the voice information signal wired by the wireless device and the data modulation signal,
The wireless device includes:
Wired transmission of a synthesized signal in which the audio information signal, the data modulation signal, and a status signal indicating an operation status of the wireless device are combined,
The remote control device is:
Wired reception of the composite signal,
Based on the level of the status signal, adjust the level of the composite signal received by wire,
A wireless device remote wired control system characterized in that voice is extracted from the audio information signal and reproduced, data is extracted from the data modulation signal, and the status of the wireless device is displayed based on the status signal. The wireless device remote wired control system according to claim 1 or 2,
The remote control device is:
The wireless device remote wired control, wherein the audio information signal included in the synthesized signal is separated from the synthesized signal after the level of the synthesized signal is adjusted, and the level is adjusted so as to be a constant level system. The wireless device remote wired control system according to any one of claims 1 to 3,
The status signal is an FSK signal, and is detected by an FSK detector included in the remote control device,
The wireless signal remote wired control system, wherein the composite signal received by the remote control device via wire is amplified by a variable gain amplifier whose gain is adjusted based on the level of the detection signal output by the FSK detector. . A wireless device remote wired control system according to claim 4,
The audio information signal included in the synthesized signal is separated from the synthesized signal by a filter provided at the output of the variable gain amplifier, and the gain is adjusted so that a signal of a constant level is output. A wireless device remote wired control system, characterized by being amplified by The wireless device remote wired control system according to any one of claims 1 to 5,
The status signal included in the combined signal includes information on the strength of the electromagnetic wave signal being wirelessly received when the wireless device is in a wireless reception state, and the wireless signal when the wireless device is in a wireless transmission state. It has information on the power of the electromagnetic wave signal that the device is transmitting wirelessly,
The remote control device displays, based on the status signal, the strength of the electromagnetic wave signal when the wireless device is in a wireless reception state and the power of the electromagnetic wave signal when the wireless device is in a wireless transmission state. A wireless device remote wired control system. The wireless device remote wired control system according to any one of claims 1 to 5,
The wireless device includes:
With a temperature sensor,
The status signal included in the combined signal includes information output by the temperature sensor,
The remote control device includes:
A wireless device remote wired control system that displays the temperature of the wireless device based on the status signal. From the remote control device, a voice information signal to be wirelessly transmitted, a data modulation signal to be wirelessly transmitted, and a control signal for controlling the wireless device are wired and transmitted.
In the wireless device, the remote control that receives the control signal by wire and operates based on the control signal, and wirelessly transmits the voice information signal and the data modulation signal that the remote control device transmits by wire. In a wireless device remote wired control system comprising a device and the wireless device,
The remote control device is:
Wire transmission of a synthesized signal in which the audio information signal, the control signal, and the data modulation signal are synthesized,
The wireless device includes:
Wired reception of the composite signal,
Based on the level of the data modulation signal, adjust the level of the composite signal received by wire,
The audio information signal included in the synthesized signal is separated from the synthesized signal after the level of the synthesized signal is adjusted, and the level is adjusted to be a constant level,
A wireless device remote wired control system that wirelessly transmits the audio information signal and the data modulation signal. From the remote control device, a voice information signal to be wirelessly transmitted, a first data modulation signal to be wirelessly transmitted, a second data modulation signal to be wirelessly transmitted, and a control signal for controlling the wireless device are wired. And
In the wireless device, the control signal is received by wire and operates based on the control signal, and the voice information signal, the first data modulation signal, and the second data transmitted by the remote control device by wire are transmitted. In a wireless device remote wired control system comprising the remote control device and the wireless device for wirelessly transmitting a data modulation signal,
The remote control device is:
A wired transmission of a combined signal in which the audio information signal, the first data modulation signal, and the second data modulation signal are combined;
The wireless device includes:
Wired reception of the composite signal,
Based on the level of the first data modulation signal, adjust the level of the combined signal received by wire,
The audio information signal included in the synthesized signal is separated from the synthesized signal after the level of the synthesized signal is adjusted, and the level is adjusted to be a constant level,
A wireless device remote wired control system characterized by wirelessly transmitting the audio information signal, the first data modulation signal, and the second data modulation signal. A wireless device remote wired control system according to claim 8,
The data modulation signal is an FSK signal, detected by an FSK detector included in the wireless device,
The wireless device remote wired control system, wherein the combined signal received by the wireless device by wire is amplified by a variable gain amplifier whose gain is adjusted based on the level of the detection signal output by the FSK detector. The wireless device remote wired control system according to claim 9,
The first data modulation signal is an FSK signal, detected by an FSK detector included in the wireless device,
The wireless device remote wired control system, wherein the combined signal received by the wireless device by wire is amplified by a variable gain amplifier whose gain is adjusted based on a level of a detection signal output from the FSK detector. The wireless device remote wired control system according to claim 10 or 11,
The audio information signal included in the synthesized signal is separated from the synthesized signal by a filter provided at the output of the variable gain amplifier, and the gain is adjusted so that a signal of a constant level is output. A wireless device remote wired control system, characterized by being amplified by

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