JP2008017078A - Tourist information radio equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide tourist information radio equipment, which does not consum a battery even when a user forgets to turn off a switch. <P>SOLUTION: A radio transmitter is turned on to enter a standby state from a stop state. The radio transmitter enters an operation state when detecting speech input in the standby state, to perform transmission. The radio transmitter enters the standby state when there is no speech input for a certain time in the operation state. The radio transmitter enters a stop state when there is no speech input for a long time in the standby state. A radio receiver in a stop state is turned on to enter a standby state. In the standby state, the radio receiver checks a carrier of a predetermined channel at fixed intervals of time. The radio receiver enters an operation state when receiving the carrier to output a received speech. The radio receiver enters the standby state when receiving no carrier in the operation state for a certain time. The radio receiver enters a stop state when receiving no carrier in the standby state for a long time. The radio receiver can forcibly be stopped. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tourist guidance radio, and more particularly to a tourist guidance radio with less battery consumption for a tourist guide to provide tourist guidance to a tourist.

  As a guide device for tourist information, there is a wireless guide system. It is a device that transmits audio from the wireless microphone to the receiver, and can cover a wide area of about 50-60m. There are 6 channels, and the sound received on the selected channel is heard with ear-plug earphones. The power source is a rechargeable battery. The noise canceller microphone unit that suppresses ambient noise can transmit the clear voice of the sender even under noisy conditions.

  There is also a wireless guide system with similar functions. It is a one-way communication system that uses radio waves from a 300MHz C-type wireless microphone. It has 13 channels, but up to 5 channels can be used simultaneously in the same space. Can be used as a factory guide, sightseeing guide, hearing aid, simple simultaneous interpretation, call window, PA system wire saving, wireless microphone. Since the transmitter uses a close-talking microphone, it can be used even in a noisy area. The transmission power is 1mW and it can be used for about 20 hours with AA alkaline batteries. Below are some examples of prior art related to this.

  The “multi-channel access wireless communication device” disclosed in Patent Literature 1 performs intermittent communication to extend the life of a battery. When the multi-channel access wireless communication apparatus completes transmission of the control signal for calling, the intermittent operation timer of the communication apparatus is set to the reference time. When the control signal, which is the same time as the completion of transmission, is received, the intermittent operation timer of the wireless communication apparatus is set to the reference time. Based on the energization signal generated by the intermittent operation timer of the communication device every predetermined time from the reference time, the communication control unit sets the corresponding wireless communication device in a communicable state and communicates in the non-occurrence state of the energization signal. Set the device to the communication stop state.

The “wireless communication apparatus having a voice transmission control function” disclosed in Patent Document 2 maintains the call quality so that the voice transmission control can be effectively performed while suppressing the influence on the call quality as much as possible. And a reduction in battery consumption. Monitor mute key on / off operations during a call. When the mute key is not turned on, the VOX control circuit is controlled in accordance with the VOX on mode or the off mode separately designated by key input. When the mute key is turned on to enter the mute state, the VOX control circuit is forcibly changed to the operating state regardless of what mode the VOX mode is set to. Thus, VOX control is always performed during the mute period.
Japanese Patent Laid-Open No. 06-314986 Japanese Unexamined Patent Publication No. 08-032463

  However, conventional tourist information radios have the following problems. If you forget to switch off the receiver, the battery will be exhausted and you will not be able to use it. If various switches are provided to save power, the operation becomes complicated, and it becomes difficult to instruct all users to operate correctly.

  An object of the present invention is to solve the above-described conventional problems and prevent a battery from being consumed even if the switch is forgotten to be turned off in a tourist guidance radio.

  In order to solve the above problems, in the present invention, a wireless transmitter, a battery, a microphone, a voice amplifier, a wireless transmission means, and a voice detection means that enters an operating state when voice input is detected in a standby state; When it is detected that it has been silent for a certain period of time in the operating state, a power saving unit that is in a standby state, a stop unit that is in a stopped state when it is detected that it has been silent for a long time in the standby state, and an operation input is detected in the stopped state A configuration is provided that includes a starting unit that sets the standby state and a stop switch that forcibly sets the stop state.

  In addition, the wireless receiver, the battery, the wireless reception means, the audio amplifier, the earphone, the intermittent reception control means for controlling to receive a carrier of a predetermined channel every predetermined time in the standby state, and the carrier are received. Then, the reception sensing means for making the operation state, the power saving means for making the standby state if the carrier is not received for a certain time in the operation state, the stop means for making the stop state if the carrier is not received for a long time in the standby state, and the operation in the stop state When an input is detected, an activation unit that enters a standby state and a stop switch that forcibly enters a stop state are provided.

  With the configuration described above, even if the tourist guidance radio is forgotten to be turned off, the battery is not consumed.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to FIGS.

  In the first embodiment of the present invention, when a voice input is detected in the standby state, it is in the operating state, in the operating state it is in the standby state when it is detected that it is silent for a certain period of time, and in the standby state it is in the silent state for a long time. The wireless transmitter is in a stopped state when detected, and in a standby state when an operation input is detected in the stopped state.

  FIG. 1 is a state transition diagram of the wireless transmitter according to the first embodiment of the present invention. FIG. 1A is a schematic state transition diagram. FIG. 1B is a detailed state transition diagram. FIG.1 (c) is explanatory drawing of the LED lighting method which shows a state.

  The function and operation of the wireless transmitter according to the second embodiment of the present invention configured as described above will be described. First, the outline of the state transition of the wireless transmitter will be described with reference to FIG. An audio circuit, a high-frequency circuit, and the like are well-known and will not be described. When the power switch is turned on while the power is off, the system enters a standby state. In the standby state, the high frequency circuit is OFF and the LED is off, but the audio circuit is operating intermittently. When a voice input is detected in the standby state, the high frequency circuit is turned on, and an operation state in which voice is transmitted wirelessly is entered. When it is detected that there is no sound for a certain period of time in the operating state, a standby state is entered. When it is detected that the sound has been silent for a long time in the standby state, it is stopped. It can also be forced to stop with the stop switch.

  Next, each state will be described in detail with reference to FIG. The stop state is a state in which the power is OFF, and all the circuits are stopped. When the power switch is turned on for 50 ms to 2 seconds in the stop state, the standby state is entered. The state does not change even if the power switch is pressed for 50 ms or less. This is to prevent the operation from changing even if the switch is touched carelessly. In the standby state, the power of the voice circuit is turned on and the presence / absence of voice input is checked. If there is no sound for 100ms or more, turn off the power of the sound circuit and the high frequency circuit and turn off the LED. Then, after waiting for 900 ms, the power of the voice circuit is turned on and the presence / absence of voice input is checked. Repeat this. When voice input is detected, it enters an operating state. Since it operates only once per second, the power consumption in the standby state is very low.

  In the operating state, the power of the high frequency circuit is turned on to light the LED. Read the channel switch and set the PLL circuit accordingly. Thus, the audio signal is transmitted wirelessly. Channels should be chosen so that no interference occurs. Check the audio input and reset the APO (Auto Power Off) timer when audio is detected. If there is no voice input for 30 seconds or more, it will be in a standby state.

  In the standby state, if the power switch is continuously pressed for 2 seconds or more, it enters the stop state. The same applies to the operating state. Also, if there is no voice input for 2 hours or more, the APO timer will time out and stop. While the power is on, the APO timer is constantly monitored, and the power is automatically turned off after 2 hours. However, since the APO timer is reset when there is audio, APO works only when there is no audio.

  When it detects that the battery voltage has dropped below 2.4V, it goes into a low voltage state. The same applies to the operating state. In low voltage detection, once a low voltage is detected, the low voltage state is maintained even if the voltage returns to the normal value again. In a low voltage state, the audio circuit and high frequency circuit are turned off and the LED blinks. APO and power switch are effective. When the power switch is pressed for 2 seconds or more, or the APO timer expires, it will stop.

  Next, a method for displaying a state by blinking an LED will be described with reference to FIGS. FIG. 1C shows a method of stopping by pressing the power switch by blinking three times. FIG. 1D shows a blinking method indicating a standby state. FIG. 3E shows a blinking method indicating a low voltage state. In the operating state, the LED is lit continuously. In the stop state, it is off.

  As described above, in the first embodiment of the present invention, the wireless transmitter enters an operation state when it detects a voice input in the standby state, and enters a standby state when it detects that it is silent for a certain period of time in the operation state. When the state is silent for a long time in the state, the state is stopped, and when the operation input is detected in the stop state, the standby state is established. Therefore, even if the power switch is forgotten to be turned off, the battery is not consumed.

  In the second embodiment of the present invention, the carrier of a predetermined channel is checked every predetermined time in the standby state, and when the carrier is detected, the carrier enters the operation state. This is a wireless receiver that is in a stopped state if it does not receive a carrier for a long time.

  FIG. 2 is a state transition diagram of the wireless receiver according to the second embodiment of the present invention. FIG. 2A is a schematic state transition diagram. FIG. 2B is a detailed state transition diagram. FIG.2 (c) is explanatory drawing of the LED lighting method which shows a state.

  The function and operation of the wireless receiver according to the second embodiment of the present invention configured as described above will be described. First, the outline of the state transition of the wireless receiver will be described with reference to FIG. An audio circuit, a high-frequency circuit, and the like are well-known and will not be described. When the power switch is turned on while the power is off, the system enters a standby state. In the standby state, the high-frequency circuit operates intermittently. When a carrier is received in the standby state, it enters an operating state. In the operating state, the received audio signal is output. When the carrier runs out in the operating state, it enters a standby state. In the standby state, if the carrier is not in the carrier state for a long time, the vehicle is stopped. It can also be forced to stop with the stop switch.

  Next, each state will be described in detail with reference to FIG. The stop state is a state in which the power is OFF, and all the circuits are stopped. When the power switch is turned on for 50 ms to 2 seconds in the stop state, the standby state is entered. The state does not change even if the power switch is pressed for 50 ms or less. This is to prevent the operation from changing even if the switch is touched carelessly. In the standby state, the power of the high-frequency circuit is turned on to check for the presence of a carrier. The channel is determined by reading the channel setting switch. If there is no carrier, turn off the power of the high-frequency circuit. Then, after waiting for 800 ms, the power of the high-frequency circuit is turned on to check for the presence of a carrier. Repeat this. When a carrier is detected, it becomes operational. Since it operates only once per second, the power consumption in the standby state is very low.

  In the operating state, the sound circuit is operated by turning on the LED. Reset the APO timer and check the carrier. Repeat this if you have a career. If there is no carrier, the intermittent timer is reset, the LED is turned off, the audio circuit is muted, and a standby state is entered. In the standby state, the carrier is checked continuously for the first 100 ms, but after that, it is checked intermittently. This is to prevent the reception from being interrupted due to an instantaneous interruption of the carrier.

  In the standby state, if the power switch is continuously pressed for 2 seconds or more, it enters the stop state. The same applies to the operating state. Also, if there is no carrier for 2 hours or more, the APO timer will time up and stop. While the power is on, the APO timer is constantly monitored, and the power is automatically turned off after 2 hours. However, since the APO timer is reset when there is a carrier, the APO works only when there is no carrier.

  When it detects that the battery voltage has dropped below 2.4V, it goes into a low voltage state. The same applies to the operating state. In low voltage detection, once a low voltage is detected, the low voltage state is maintained even if the voltage returns to the normal value again. In a low voltage state, the high frequency circuit is turned off and the LED blinks. APO and power switch are effective. When the power switch is pressed for 2 seconds or more, or the APO timer expires, it will stop.

  Next, a method for displaying a state by blinking an LED will be described with reference to FIGS. FIG. 2C shows a method of indicating a stop by pressing the power switch by blinking three times. FIG. 2D shows a blinking method indicating a standby state. FIG. 2E shows a blinking method indicating a low voltage state. In the operating state, the LED is lit continuously. In the stop state, it is off.

  As described above, in the second embodiment of the present invention, the wireless receiver checks the carrier of a predetermined channel every certain time in the standby state, and enters the operating state when the carrier is detected, and receives the carrier for a certain time in the operating state. Otherwise, the standby state is established, and if the carrier is not received for a long time in the standby state, the suspension state is established.

  In the third embodiment of the present invention, the carrier of a predetermined channel is periodically checked in accordance with the time in the semi-stop state, and when a carrier is detected, the carrier enters the standby state, and the carrier of the predetermined channel is checked every predetermined time in the standby state. A wireless receiver that is in an operating state when a carrier is detected, enters a standby state when no carrier is received for a certain period of time in the operating state, and enters a semi-stopped state when no carrier is received for a long time in the standby state.

  FIG. 3 is a state transition diagram of the wireless receiver according to the third embodiment of the present invention. FIG. 3A is a schematic state transition diagram. FIG. 3B is a detailed state transition diagram. However, details are omitted.

  The function and operation of the wireless receiver according to the third embodiment of the present invention configured as described above will be described. First, the outline of the state transition of the wireless receiver will be described with reference to FIG. An audio circuit, a high-frequency circuit, and the like are well-known and will not be described. The high-frequency circuit operates intermittently in a semi-stop state in which only the clock and the minimum circuit are powered on. The carrier of a predetermined channel is checked according to the time. For example, check at 0 and 30 minutes every hour. When a carrier is detected, a standby state is entered. When a carrier is received in the standby state, it enters an operating state. In the operating state, the received audio signal is output. When the carrier runs out in the operating state, it enters a standby state. In the standby state, if it is in a carrier-free state for 1 hour, it will be in a semi-stop state. Since the power consumption in the semi-stop state and standby state is very small, it can operate for a long time without turning off all the power.

  Next, each state will be described in detail with reference to FIG. In the semi-stop state, the power is on and the watch is always operating. The high-frequency circuit operates intermittently according to the time. When a carrier is detected in the semi-stop state, a standby state is entered. In the standby state, the presence or absence of a carrier is checked intermittently about every 1 second. If there is no carrier, turn off the power of the high-frequency circuit. Then, after waiting for 800 ms, the power of the high-frequency circuit is turned on to check for the presence of a carrier. Repeat this. When a carrier is detected, it becomes operational. In the operating state, the audio circuit is operated. Reset the APO timer and check the carrier. Repeat this if you have a career. If there is no carrier, it will be in a standby state. In the standby state, if there is no carrier for 1 hour or more, the APO timer is timed up and a semi-stop state is entered.

  As described above, in the third embodiment of the present invention, the radio receiver periodically checks the carrier of a predetermined channel in accordance with the time in the semi-stop state, and enters the standby state when the carrier is detected, and is constant in the standby state. The carrier of a predetermined channel is checked every time, and when a carrier is detected, it enters an operating state. When it does not receive a carrier for a certain period of time in the operating state, it enters a standby state. Since it is configured, it can receive and save power without any operation.

  The tourist guide radio of the present invention is optimal as a tourist guide radio with less battery consumption for a tourist guide to provide tourist guidance to tourists.

It is a state transition diagram of the wireless transmitter in Example 1 of this invention. It is a state transition diagram of the radio receiver in Example 2 of the present invention. It is a state transition diagram of the wireless receiver in Example 3 of this invention.

Claims (3)

  A battery, a microphone, a voice amplifier, a wireless transmission means, a voice detection means that is activated when a voice input is detected in a standby state, and a power-saving mode that is activated when a silent state is detected for a certain period of time in the operational state. Means, a stop means for making a stop state when detecting a silent state for a long time in the standby state, a start means for making a standby state when detecting an operation input in the stop state, and a stop switch for forcibly making the stop state A wireless transmitter characterized by comprising:   Battery, wireless reception means, audio amplifier, earphone, intermittent reception control means for controlling to receive a carrier of a predetermined channel at fixed time intervals in a standby state, and reception sensing that activates when a carrier is received Means, power saving means to be in a standby state if no carrier is received for a certain period of time in an operating state, stop means to be in a standby state if no carrier is received for a long time in the standby state, and a standby state when an operation input is detected in the stopped state A radio receiver comprising: an activating means for forcibly and a stop switch for forcibly stopping. Controls to receive a carrier of a predetermined channel in accordance with the time in a semi-stop state in which only a minimum circuit including the battery, wireless receiving means, audio amplifier, earphone, clock, and clock is operating Scheduled reception control means, a periodic reception sensing means that enters a standby state when a carrier is received in a semi-stop state, an intermittent reception control means that controls to receive a carrier of a predetermined channel every predetermined time in the standby state, Reception sensing means that is activated when a carrier is received in the standby state, power saving means that is activated when no carrier is received for a certain period of time in the operational state, and a semi-stop state that is activated when no carrier is received for a long time in the standby state. A wireless receiver comprising stop means.

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