JP2011166575A - Display information monitor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display information monitor with a simple configuration that allows a user to easily confirm the exact intensity of received waves of a radio slave unit by sound, without visual inspection. <P>SOLUTION: A body 10a provided with a plurality of photo transistors 2a to 2n, a selection switch 3, a sound source drive circuit 4, and a sound source unit 5 is disposed close to the radio slave unit 14 so that the plurality of photo transistors 2a to 2n may face a plurality of LEDs 1a to 1n of the radio slave unit 14. When each of the LEDs 1a to 1n of the radio slave unit 14 is turned on or off to display the intensity of waves received from a radio master unit 13a as display information, the photo transistors 2a to 2n receive the light from the LEDs 1a to 1n of the radio slave unit 14, respectively. A control signal output unit (selection switch 3 and sound source drive circuit 4) outputs a sound output control signal based on reception signals from the photo transistors 2a to 2n, and sound that indicates the display information of the radio slave unit 14 is output from the sound source unit 5 by the sound output control signal. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a display information monitoring device, and more particularly to a display information monitoring device used in a wireless data communication system for confirming information of measurement data measured by a meter such as a gas meter, a water meter, or a sensor.

  Conventionally, as a wireless data communication system, a terminal device connected to a center side network control device via a communication line, a wireless master device built in the terminal device, and communication with the wireless master device via a wireless line There are a plurality of wireless slave devices that perform the measurement, and meters, sensors, etc., such as gas, water, and electricity connected to the wireless slave devices (see, for example, JP-A-2004-341648 (Patent Document 1)). .

  In the wireless data communication system, the terminal device interface with the public line network is a control device for a general telephone line network, or a PHS (Personal Handiphone System) which is a mobile communication network. It may be a control device for a network, a DOPA (registered trademark) network, a FOAM (registered trademark) network, or a control device for an Internet network.

  A specific example of such a wireless data communication system is shown in FIG. As shown in FIG. 5, wireless slave devices 14 a to 14 n that are connected to meter sensors 15 a to 15 n such as electric meters, gas meters, and water meters in each house and communicate with the wireless master device 13 a are installed. The wireless data communication system includes a wireless slave device 14a to 14n, a terminal device 13 including the wireless master device 13a, a center side device 11 that processes meter readings and measurement data from meter sensors 15a to 15n. It has. In addition, the terminal devices 13 including the wireless slave devices 14a to 14n and the wireless master device 13a communicate with each other via a specific low-power radio, and the terminal device 13 and the center side device 11 are one of public line networks. Communication is performed via a certain mobile radio network 12.

  The terminal device 13 is mainly composed of functional blocks for controlling the mobile communication network and the wireless master device 13a. When activation occurs from the meters / sensors 15a to 15n, first, the terminal device 13 is activated from the wireless slave devices 14a to 14n, and the terminal device 13 activates the mobile radio base station of the mobile radio network 12. The link with the center side device 11 via the mobile radio network 12 is successful, and the terminal call communication is established.

  On the other hand, when performing center polling communication from the center side device 11 to the terminal device 1, the activation radio wave arrives at the terminal device 13 from the mobile radio base station, the terminal device 13 receives the activation radio wave, The wireless slave devices 14a to 14n and meter sensors 15a to 15n are sequentially activated, and the link with the center side device 11 through the mobile wireless network 12 is successful, and the center polling communication is established.

  In the specific low power section between the wireless slave devices 14a to 14n and the wireless master device 13a, a data error occurs unless the radio wave is above a certain level, and communication is not established. For this reason, when installing the terminal device 13 and the wireless slave devices 14a to 14n, the radio field strength between the wireless master device 13a and the wireless slave devices 14a to 14n of the terminal device 13 is measured, and the radio waves exceeding a certain threshold value are measured. The terminal device 13 is installed in a place where strength is maintained. At this time, radio waves are continuously emitted from the wireless master device 13a, the received radio wave intensity is measured on the wireless slave devices 14a to 14n side, and “strong”, “medium”, “weak” determined as certain predetermined received radio wave strengths. The LEDs provided in the wireless slave devices 14a to 14n corresponding to "" are turned on.

  An LED monitor device is used to monitor the LEDs of the wireless slave devices 14a to 14n. This LED monitor device is used when the wireless slave unit 14 is mounted in a pipe shaft of a condominium or on a wall surface, and the LED that displays the received radio wave intensity of the wireless slave unit 14 cannot be directly viewed.

  FIG. 6 shows a circuit diagram of the LED monitor device, in which a light receiving block 102 having three phototransistors 102a to 102c, and LED drive circuit sections 109a to 109c connected to the light receiving block 102 via lead wires 116, LEDs 103a to 103c that are turned on by the LED drive circuit sections 109a to 109c are provided. LED drive circuit sections 109a to 109c, LEDs 103a to 103c, a power switch SW, a DC power supply E, and the like are housed in the main body 110a.

  This LED monitor device opposes the light receiving block 102 at the location of three LEDs 1a to 1c that display the received radio wave intensity of a specific low-power radio wireless slave unit 14 (one of 14a to 14n shown in FIG. 5) in four stages. Thus, the lighting and extinguishing of the LEDs detected by the light receiving block 102 are displayed as they are by the LEDs 103a to 103c.

  In the above LED monitor device, for example, when a wireless slave unit is installed on a wall up to 2 m above the ground, it can be confirmed visually, but the wireless slave unit is installed in the pipe shaft in which the gas meter of the housing complex is housed. If it is, the door of the pipe shaft is closed, so that the display of the LEDs 103a to 103c indicating the radio wave intensity of the LED monitor device cannot be visually observed.

  For this purpose, as shown in FIG. 6, a lead wire 116 is provided to connect between the light receiving block 102 and the LED drive circuit units 109a to 109n, and the main body 110a is taken out of the pipe shaft, and is not visible. The radio field strength received by the wireless slave unit 14 installed at the same location is confirmed.

  However, when the length of the lead wire 116 is 1 m or more, there is a problem that the lead wire 116 becomes tangled when measuring the received radio wave intensity of a large number of wireless slave units, and disturbs the movement. Moreover, the brightness | luminance of LED of the said LED monitor apparatus may be unable to be visually recognized in the daytime outdoors. In addition, when the LED monitor device is installed near a wireless slave unit, since a human influences radio waves, it is necessary for the human to move away from the installation position of the LED monitor device as much as possible, and the display of the LEDs 103a to 103c becomes invisible. On the other hand, when the LED monitor device is approached to visually observe the display of the LEDs 103a to 103c, the received radio wave intensity of the wireless slave device cannot be measured accurately.

JP 2004-341648 A

  Accordingly, an object of the present invention is to provide a wireless data communication system including a wireless master device and a wireless slave device that perform wireless data communication, and to accurately receive radio wave intensity of the wireless slave device with a simple configuration without visual observation. An object of the present invention is to provide a display information monitor device that can be easily confirmed by sound.

In order to solve the above problems, a display information monitor device according to the present invention provides:
The plurality of display units of the wireless slave unit that communicate with the wireless base unit and have a plurality of display units that are turned on or off to display the received radio wave intensity of the radio wave received from the wireless base unit as display information A plurality of light receiving portions for receiving light from each of the light receiving portions,
A control signal output unit that outputs a sound output control signal based on light reception signals from the plurality of light receiving units;
A sound source unit that outputs a sound representing the display information displayed on the plurality of display units of the wireless slave unit by the sound output control signal from the control signal output unit;
The plurality of light receiving units, the control signal output unit, and the sound source unit are provided, and are close to the wireless slave unit so that the plurality of light receiving units are opposed to the plurality of display units of the wireless slave unit. And a main body to be arranged.

  According to the above configuration, the main body provided with the plurality of light receiving units, the control signal output unit, and the sound source unit of the display information monitoring device is wireless so that the plurality of light receiving units face the plurality of display units of the wireless slave unit. Since the multiple display units of the wireless slave unit are turned on or off, and the reception intensity of the radio wave received from the wireless master unit is displayed as display information, the display information is displayed. The plurality of light receiving units of the monitor device respectively receive light from the plurality of display units of the wireless slave unit. A control signal output unit outputs a sound output control signal based on light reception signals from the plurality of light receiving units, and a sound representing display information of the wireless slave unit is output from the sound source unit by the sound output control signal. This makes it possible to know the accurate received radio wave of the wireless slave unit at a location away from the wireless slave unit. Therefore, it is possible to easily confirm the accurate received radio wave intensity of the wireless slave unit by sound with a simple configuration.

Moreover, in the display information monitor device of one embodiment,
The control signal output unit is
A selection switch for alternatively selecting and outputting the light reception signals from the plurality of light receiving units;
And a switching element that outputs the sound output control signal based on the light reception signal from the selection switch.

  According to the above embodiment, the light receiving signals from the plurality of light receiving units are alternatively selected and output by the selection switch of the control signal output unit, and the sound output control is performed from the switching element based on the selected light receiving signals. By outputting a signal, a sound output representing the display information of the wireless slave unit is output from the sound source unit when one arbitrarily selected from a plurality of display units of the wireless slave unit is turned on (or turned off) Can do.

Moreover, in the display information monitor device of one embodiment,
The sound source unit turns on and off the sound output based on the sound output control signal from the control signal output unit,
The control signal output unit is an intermittent pattern of the sound output of the sound source unit according to the number of lighting or lighting patterns of the plurality of display units of the wireless slave unit represented by light reception signals from the plurality of light receiving units. The sound output control signal is output so as to control the sound.

  According to the above embodiment, the sound output from the sound source unit is turned on / off according to the number of lighting or lighting pattern of the plurality of display units of the wireless slave unit represented by the light reception signals from the plurality of light receiving units. By outputting the sound output control signal from the control signal output unit so as to control the intermittent pattern, it becomes possible to distinguish the difference in the number of lighting or lighting patterns of the plurality of display units of the wireless slave unit by sound. Thereby, the received radio wave intensity corresponding to the number of lighting or lighting patterns of the plurality of display units of the wireless slave unit can be known by sound.

Moreover, in the display information monitor device of one embodiment,
The sound source unit varies the frequency of sound output based on the sound output control signal from the control signal output unit,
The control signal output unit sets the frequency of the sound output of the sound source unit according to the number of lighting or lighting patterns of the plurality of display units of the wireless slave unit represented by light reception signals from the plurality of light receiving units. The sound output control signal is output so as to be controlled.

  According to the above embodiment, the frequency of sound output from the sound source unit is controlled according to the number of lighting or lighting patterns of the plurality of display units of the wireless slave unit represented by the light reception signals from the plurality of light receiving units. By outputting a sound output control signal from the control signal output unit, it is possible to distinguish the difference in the number of lighting or lighting patterns of the plurality of display units of the wireless slave unit by sound. Thereby, the received radio wave intensity corresponding to the number of lighting or lighting patterns of the plurality of display units of the wireless slave unit can be known by sound.

  As is clear from the above, according to the display information monitoring apparatus of the present invention, the wireless master device and the wireless slave device that perform wireless data communication are provided, and the measurement data measured by the instrument is transmitted from the wireless slave device to the wireless master device. The wireless slave unit has a plurality of display units each of which is turned on or off in order to display the received radio wave intensity of the radio wave received from the wireless master unit as display information. In the system, it is possible to realize a display information monitor device that can easily confirm the accurate received radio wave intensity of the wireless slave unit by sound with a simple configuration.

FIG. 1 is a configuration diagram of a display information monitoring apparatus and a wireless data communication system according to the first embodiment of the present invention. FIG. 2 is a circuit diagram of the display information monitor apparatus. FIG. 3 is a circuit diagram of a display information monitor apparatus according to the second embodiment of the present invention. FIG. 4 is a circuit diagram of a display information monitor apparatus according to a third embodiment of the present invention. FIG. 5 is a configuration diagram of a wireless data communication system. FIG. 6 is a circuit diagram of a conventional LED monitor device used in the wireless data communication system.

  Hereinafter, the display information monitor apparatus of the present invention will be described in detail with reference to the illustrated embodiments.

[First Embodiment]
FIG. 1 shows a configuration diagram of a display information monitoring apparatus 10 and a wireless data communication system according to the first embodiment of the present invention. This wireless data communication system has the same configuration as the wireless data communication system shown in FIG. 5 except for the number of LEDs of the wireless slave unit, and the same reference numerals are assigned to the same components.

  In this wireless data communication system, as shown in FIG. 1, wireless slave units 14a to 14n to which meter sensors 15a to 15n such as electric meters, gas meters, and water meters of each door are connected, and wireless slave units 14a to 14n, A terminal device 13 including a wireless master device 13a that performs communication, and a center side device 11 that processes measurement data from the meter sensors 15a to 15n are provided. In addition, the terminal devices 13 including the wireless master devices 13a to 14n and the terminal device 13 including the wireless master device 13a communicate with each other via a specific low power radio, and the terminal device 13 including the wireless master device 13a and the center side device 11 are connected to the public. Communication is performed via a mobile radio network 12 which is one of circuit networks.

  FIG. 2 shows a circuit diagram of the display information monitor device 10. As illustrated in FIG. 2, the wireless slave device 14 (one of 14 a to 14 n illustrated in FIG. 1) includes a plurality of LEDs 1 a to 1 n as an example of a display unit. The plurality of LEDs 1a to 1n are turned on or off in order to display the reception intensity of radio waves received from the wireless master device 13a (shown in FIG. 1) as display information.

  As shown in FIG. 2, the display information monitoring apparatus 10 of the first embodiment includes a plurality of phototransistors 2a as an example of a light receiving unit that receives light from the plurality of LEDs 1a to 1n of the wireless slave unit 14, respectively. , 2b,..., 2n, and light reception signals from the phototransistors 2a, 2b,..., 2n of the light reception block 2 are selected alternatively, and sound output control is performed based on the selected light reception signals A sound source drive circuit 4 having a selection switch 3 that outputs a signal, a transistor Q1 as an example of a switching element that outputs a sound output control signal based on a light reception signal from the selection switch 3, and a sound from the sound source drive circuit 4 A sound source unit 5 that outputs sound representing display information of the wireless slave unit 14 by an output control signal, and collectors of the phototransistors 2a, 2b,..., 2n of the light receiving block 2 A power switch SW having one end connected to the power supply terminal of the sound source unit 5, a DC power source E having a positive electrode connected to the other end of the power switch SW and a negative electrode connected to the ground, the light receiving block 2 and the selection switch 3 And a sound source drive circuit 4, a sound source unit 5, a power switch SW, and a main body 10a for accommodating a DC power source E.

  One end of the power switch SW is connected to the collectors of the phototransistors 2a, 2b,..., 2n of the light receiving block 2, and the emitters of the phototransistors 2a, 2b, ..., 2n are connected to a plurality of input terminals of the selection switch 3, respectively. ing.

  In the sound source drive circuit 4, the light reception signal from the selection switch 3 is connected to one end of the resistor R1, the base of the NPN transistor Q1 is connected to the other end of the resistor R1, and the emitter of the transistor Q1 is connected to the ground. It is connected. Further, a resistor R2 is connected between the base and emitter of the transistor Q1, and a sound output control signal is output from the collector of the transistor Q1.

  The selection switch 3 and the sound source drive circuit 4 constitute a control signal output unit.

  The main body 10a of the display information monitor device 10 includes a plurality of LEDs 1a to 1n (shown in FIG. 2) of the wireless slave unit 14a shown in FIG. 1 and a plurality of phototransistors 2a, 2b,. It arrange | positions in proximity with the radio | wireless subunit | mobile_unit 14a so that it may oppose.

  In the wireless data communication system shown in FIG. 1, the wireless slave units 14 a to 14 n transmit and receive radio waves to and from the wireless master unit 13 a of the terminal device 13 by using a specific low power radio. The uplink and downlink between the slave units 14a to 14n have the same radio field intensity. Therefore, normally, radio waves are continuously transmitted from the wireless master device 13a, and the subordinate wireless slave devices 14a to 14n are set to the radio wave reception mode, and the received radio wave strengths are provided in the wireless slave devices 14a to 14n. Displayed in real time by the LEDs 1a to 1n.

  In the wireless slave devices 14a to 14n, for example, when the radio wave intensity is expressed in three levels of “strong”, “medium”, and “weak”, when “strong”, the three LEDs 1a, LED1b, and LED1c are turned on. When “medium”, the two LEDs 1b and 1c are turned on, when “weak”, one LED 1c is turned on, and when “no radio wave”, the LEDs 1a, 1b and 1c are turned off.

  At this time, the selection switch 3 of the display information monitor device 10 selects the light reception signal from the phototransistor 2b of the light reception block 2, and the installation conditions of the wireless slave units 14a to 14n are set so that two or more LEDs are lit. That is, when the received radio wave intensity is set to “medium” or higher, the phototransistor 2 b operates to output a light reception signal, and the light reception signal is input to the sound source drive circuit 4 via the selection switch 3. Then, a sound is generated from the sound source unit 5 by outputting a sound output control signal from the sound source drive circuit 4.

  Next, when the received radio wave intensity is “weak”, the LED 1a and the LED 1b of the wireless slave unit 14 are not lit but only the LED 1c is lit, so the phototransistor 2b of the light receiving block 2 is not turned on. No sound output control signal is output from the circuit 4, and no sound is generated from the sound source unit 5.

  Further, when the received radio wave intensity is “strong”, all of the LEDs 1 a, LED 1 b, and LED 1 c of the wireless slave unit 14 are lit, so that the selection switch 3 is set to the phototransistor 2 b of the light receiving block 2. Sound is generated and it can be recognized that the received radio wave intensity is “medium” or higher.

  As a result, whether the received radio wave intensity is “medium” or higher or whether the received radio wave intensity is “weak” or lower can be recognized from the sound of the display information monitor device 10.

  Next, when the selection switch 3 of the display information monitor device 10 is set to the phototransistor 2a of the light receiving block 2, the sound is generated from the sound source unit 5 only when the received radio wave intensity is “strong”. Can be determined.

  According to the display information monitoring apparatus 10 having the above configuration, the main body 10a provided with the plurality of phototransistors 2a, 2b,..., 2n, the control signal output unit (selection switch 3 and the sound source drive circuit 4), and the sound source unit 5 is provided. Since the plurality of phototransistors 2a, 2b,..., 2n face the plurality of LEDs 1a to 1n of the wireless slave unit 14, the LEDs 1a to 1 of the wireless slave unit 14 are arranged close to the wireless slave unit 14. When 1n is turned on or off, and the reception intensity of the radio wave received from the wireless master device 13a is displayed as display information, the phototransistors 2a, 2b,. The light from ˜1n is received. A control signal output unit (selection switch 3 and sound source drive circuit 4) outputs a sound output control signal based on the received light signals from the phototransistors 2a, 2b,. The sound representing the 14 display information is output from the sound source unit 5. As a result, it is possible to know the accurate received radio wave of the wireless slave unit 14 at a location away from the wireless slave unit 14. Therefore, it is possible to easily confirm the accurate received radio wave intensity of the wireless slave unit 14 with sound with a simple configuration.

  In addition, the selection switch 3 of the control signal output unit selectively selects and outputs light reception signals from a plurality of light reception units, and the sound source drive circuit 4 (including switching elements) based on the selected light reception signals. By outputting a sound output control signal from the sound source unit 5, a sound output representing display information of the wireless slave unit 14 is output from the arbitrarily selected one of the LEDs 1a to 1n of the wireless slave unit 14 can do.

[Second Embodiment]
FIG. 3 shows a circuit diagram of the display information monitor device 20 according to the second embodiment of the present invention. The wireless data communication system in which the display information monitor device 20 of the second embodiment is used has the same configuration as the wireless data communication system shown in FIG. 1 of the first embodiment.

  As shown in FIG. 3, the display information monitoring device 20 of the second embodiment includes a plurality of phototransistors 2a and 2b as an example of a light receiving unit that receives light from the plurality of LEDs 1a to 1n of the wireless slave unit 14, respectively. ,..., 2n, a control unit 8 as an example of a control signal output unit to which received light signals from the phototransistors 2a, 2b,. A sound source drive circuit 4 that outputs a sound output control signal based on a signal from the sound source, a sound source unit 5 that outputs a sound representing display information of the wireless slave unit 14 by a sound output control signal from the sound source drive circuit 4, and the light receiving .., 2n of the block 2 and a power switch SW having one end connected to the power source terminal of the sound source unit 5 and a positive side connected to the other end of the power switch SW. A DC power source E to connected to ground, and a body 20a which houses a DC power source E the light-receiving block 2 and the control unit 8 and the sound source drive circuit 4 and the tone generator 5 and the power switch SW.

  The control unit 8 includes a microcomputer, an input / output circuit, and the like, and includes resistors Ra, Ra between the input terminals to which the light reception signals from the phototransistors 2a, 2b,. Rb,..., Rn are connected to each other.

  In the display information monitor device 20 of the second embodiment, the control unit 8 is programmed to output sound corresponding to the number of the LEDs 1a to 1n that the wireless slave unit 14 is lit from the sound source unit 5, thereby wirelessly. When the number of LEDs mounted on the slave unit 14 is identified and the received radio wave intensity is displayed by, for example, three LEDs 1a to 1c without providing the manual selection switch SW as in the first embodiment shown in FIG. It is possible to automatically judge the received radio wave intensity “strong”, “medium”, “weak”, “no radio wave” and sound a sound corresponding to each received radio wave intensity.

  With the display information monitoring device 20 having the above-described configuration, it is possible to easily confirm the accurate received radio wave intensity of the wireless slave device 14 with sound with a simple configuration.

In addition, the sound output from the sound source unit 5 is turned on and off according to the number of lighting of the LEDs 1a to 1n of the wireless slave unit 14 represented by the light reception signals from the plurality of phototransistors 2a, 2b,. By outputting a sound output control signal from the control unit 8 so as to control the intermittent pattern, it is possible to distinguish the difference in the number of lighting of the LED 1a to LED 1n of the wireless slave device by sound. Therefore, the reception intensity of the radio wave according to the number of lighting LEDs 1a to 1n of the wireless slave device 14 can be known by sound.
[Third Embodiment]
FIG. 4 shows a circuit diagram of a display information monitor device 30 according to the third embodiment of the present invention. The wireless data communication system in which the display information monitor device 30 of the third embodiment is used has the same configuration as the wireless data communication system shown in FIG. 1 of the first embodiment.

  As shown in FIG. 4, the display information monitor device 30 of the third embodiment includes a plurality of phototransistors 2 a and 2 b as an example of a light receiving unit that receives light from the plurality of LEDs 1 a to 1 n of the wireless slave unit 14. ,..., 2n, a control unit 38 as an example of a control signal output unit to which light reception signals from the phototransistors 2a, 2b,. , 2n collectors of the light receiving block 2 and the power source of the sound source unit 5. The sound source unit 35 outputs sound representing display information of the wireless slave unit 14 by a plurality of sound output control signals from A power switch SW having one end connected to the terminal, a DC power source E having a positive electrode connected to the other end of the power switch SW and a negative electrode connected to the ground, the light receiving block 2, the control unit 38, and a sound source. And a main body 30a which houses a DC power source E 35 and the power switch SW.

  The control unit 38 includes a microcomputer, an input / output circuit, and the like, and includes resistors Ra, Ra between the input terminals to which the light reception signals from the phototransistors 2a, 2b,. Rb,..., Rn are connected to each other. Further, the plurality of sound output control signals output from the control unit 38 correspond to the frequency of the sound output from the sound source unit 35, for example, any one of the plurality of sound output control signals. When one of them becomes a high level, a sound having a frequency corresponding to the sound output control signal may be output from the sound source unit 35, or a combination of a plurality of sound output control signals (for example, binary code) The frequency of the sound output from 35 may correspond.

  In the display information monitor device 30 of the third embodiment, by programming the control unit 38 so as to output from the sound source unit 35 sound having a frequency corresponding to the number of LEDs 1a to 1n that the wireless slave unit 14 is turned on. The number of LEDs mounted on the wireless slave unit 14 is identified, and the received radio wave intensity is displayed by, for example, three LEDs 1a to 1c without providing a manual selection switch SW as in the first embodiment shown in FIG. In this case, it is possible to automatically judge the received radio wave intensity “strong”, “medium”, “weak”, “no radio wave”, and sound a frequency corresponding to each received radio wave intensity.

  With the display information monitor device 30 having the above-described configuration, the accurate received radio wave intensity of the wireless slave device 14 can be easily confirmed by sound with a simple configuration.

  Further, the frequency of the sound output from the sound source unit 35 is controlled in accordance with the number of LEDs 1a to 1n of the wireless slave unit 14 represented by the light reception signals from the plurality of phototransistors 2a, 2b,. By outputting a sound output control signal from the control unit 38, the difference in the number of lighting of the LEDs 1a to LED1n of the wireless slave device 14 can be distinguished by sound. Therefore, the reception intensity of the radio wave according to the number of lighting of the LED 1a to LED 1n of the wireless slave device 14 can be known by sound.

  According to the display information monitoring device of the present invention, when a wireless slave unit is housed in a pipe shaft in which a gas meter or a water meter such as an apartment house is housed, the wireless slave unit body that displays the received radio wave intensity is mounted. Although the lighting of the LED cannot be visually confirmed, the received radio wave intensity can be easily confirmed by sound remotely by sounding according to the lighting state of the LED. In addition, since it becomes possible for a human to move away from a wireless slave unit to a place where radio waves do not affect, it is possible to check the correct received radio wave intensity. In addition, since there is no lead wire that connects the separate light receiving unit and the main body, there is no problem that the lead wire gets tangled when moving by measuring the received radio wave intensity for many wireless slave units, There is no time loss for organizing the lead wires.

  In the first to third embodiments, the received radio wave intensity corresponding to the number of lighting of the LEDs 1a to 1n of the wireless slave units 14a to 14n is represented, but the received radio wave intensity may be represented by a lighting pattern or the like instead of the number of lighting. . Further, the number of display units indicating the received radio wave intensity of the wireless slave unit is not limited to three or more, and may be two display units. In this case, the number of light receiving units of the display information monitoring device is two.

  In the second and third embodiments, the sound output from the sound source unit 5 is turned on and off according to the number of LEDs 1a to 1n of the wireless slave unit 14 to be turned on, or the intermittent pattern of the sound output is controlled. Although the frequency of the sound output from the sound source unit 35 is controlled according to the number of LEDs 1a to 1n of the device 14 lit, the display information displayed by the plurality of display units of the wireless slave units is output from the sound source unit. The sound may be identified by the tone color of the sound.

  Although specific embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention.

1a ~ 1n ... lED
2 ... Light-receiving block 2a to 2n ... Phototransistor 3 ... Selection switch 4 ... Sound source drive circuit 5, 35 ... Sound source unit 10, 20, 30 ... Display information monitor device 10a, 20a, 30a ... Main body 11 ... Center side device 12 ... Movement Body wireless network 13 ... Terminal device 13a ... Wireless master unit 14,14a-14n ... Wireless slave unit SW ... Power switch E ... DC power supply

Claims (4)

The plurality of display units of the wireless slave unit that communicate with the wireless base unit and have a plurality of display units that are turned on or off to display the received radio wave intensity of the radio wave received from the wireless base unit as display information A plurality of light receiving portions for receiving light from each of the light receiving portions,
A control signal output unit that outputs a sound output control signal based on light reception signals from the plurality of light receiving units;
A sound source unit that outputs a sound representing the display information displayed on the plurality of display units of the wireless slave unit by the sound output control signal from the control signal output unit;
The plurality of light receiving units, the control signal output unit, and the sound source unit are provided, and are close to the wireless slave unit so that the plurality of light receiving units are opposed to the plurality of display units of the wireless slave unit. A display information monitor device comprising: a main body disposed in a row. In the display information monitor device according to claim 1,
The control signal output unit is
A selection switch for alternatively selecting and outputting the light reception signals from the plurality of light receiving units;
And a switching element that outputs the sound output control signal based on the light reception signal from the selection switch. In the display information monitor device according to claim 1,
The sound source unit turns on and off the sound output based on the sound output control signal from the control signal output unit,
The control signal output unit is an intermittent pattern of the sound output of the sound source unit according to the number of lighting or lighting patterns of the plurality of display units of the wireless slave unit represented by light reception signals from the plurality of light receiving units. The display information monitor apparatus outputs the sound output control signal so as to control the sound. In the display information monitor device according to claim 1,
The sound source unit varies the frequency of sound output based on the sound output control signal from the control signal output unit,
The control signal output unit sets the frequency of the sound output of the sound source unit according to the number of lighting or lighting patterns of the plurality of display units of the wireless slave unit represented by light reception signals from the plurality of light receiving units. A display information monitor device which outputs the sound output control signal so as to control.

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