JP2006174360A - Remote control system for hot-water supplier, hot-water supplier controller with the same and intercom speech control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a remote control system for hot-water supplier, hot-water supplier controller with the same and intercom speech control method in which generation of noise sound is prevented by preventing a beat wave to be generated from being demodulated by controlling a voice amplifier circuit for intercom speech when the voice amplifier circuit for intercom speech is common with a voice amplifier circuit for a voice synthesizer circuit. <P>SOLUTION: Each of remote controllers (kitchen remote controller 20, bathroom remote controller 30) constituting the remote control system for hot-water supplier is provided with: an FM demodulator 24b including a function for monitoring presence/absence of an audio signal carrier wave of an intercom; an operational amplifier 24c to be used for amplifying an audio signal; and an audio amplifier 24d for amplifying the audio signal. While no audio signal carrier wave is detected in the FM demodulator 24b, the operational amplifier 24c is not operated and an intercom speech line is turned into standby state. When an audio signal carrier wave is detected by the FM demodulator 24b, the operational amplifier 24c is operated and the intercom speech line is opened. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a remote controller (hereinafter referred to as a remote controller) system for a water heater used in a bath apparatus with a water heater. The present invention also relates to a water heater controller provided with the remote controller system for the water heater and an interphone call method.

  2. Description of the Related Art Conventionally, there is a bath apparatus with a water heater in which a plurality of remote controllers for remotely controlling hot water for a bathtub, temperature adjustment, and the like are provided in a bathroom or a kitchen. In recent years, in order to improve user convenience, there is an intercom function provided on a remote controller of a bath apparatus with a dispenser. In general, such an intercom function is such that a communication signal for data communication and an audio signal for intercom are modulated to predetermined carrier frequencies, respectively, and are the same as a communication signal carrier (communication carrier) and an audio signal carrier (voice carrier). In many cases, a modulation scheme is used in which transmission and reception is superimposed on the line.

  In the case of using this modulation method, the intercom transmission / reception circuit unit of the kitchen remote control operates at the same time as the intercom switch of the kitchen remote control is pressed. A remote control with an interphone is disclosed in which the frequency of each signal is selected so that the level of the beat wave is minimized with three signals of a carrier wave and a bathroom sound signal carrier wave (for example, Patent Document 1).

However, when the remote control with an interphone becomes two signals due to the influence of noise or the like, the balance is lost and a beat wave with a large level is generated. When the interphone call is opened in this state, the interphone transmission / reception circuit unit demodulates the generated beat wave until three signals are generated, and thus noise may be generated from the speaker.
Therefore, an interphone call line opening control device is disclosed in which a demodulated signal of a beat wave that has been generated before the interphone call line is opened is not output from a speaker (for example, Patent Document 2).

JP 2001-119964 A JP 2004-104290 A

  In the interphone call line opening control device described above, when the voice amplifier circuit is the same as the voice amplifier circuit for the voice synthesis circuit that performs key operation sound and voice guidance, the remote controller on the other side is operated after the call switch is operated. If the speech synthesis circuit operates between receiving the call start signal and outputting the speech signal carrier wave, it is necessary to operate the speech amplification circuit even though the speech signal carrier wave is not detected.

  That is, each frequency is selected so that a noise component called a beat wave caused by interference with three signals having different frequencies of the operation signal carrier, the kitchen audio signal carrier, and the bathroom audio signal carrier is minimized. Even if each carrier wave is two signals, the audio amplifier circuit operates and a beat wave having a large level demodulated by the FM demodulation IC is amplified. The amplified beat wave is output from the speaker as a noise sound, and there is a problem that the user is uncomfortable.

  The present invention has been made to solve the above-described problems, and controls an interphone call voice amplifier circuit when the interphone call voice amplifier circuit and the voice synthesizer voice amplifier circuit are common. Accordingly, an object of the present invention is to provide a remote control system for a water heater that prevents the generation of a noise sound by not demodulating the generated beat wave, a water heater control device including the same, and an interphone call method.

  The remote control system for a water heater according to the present invention transmits and receives an audio signal carrier wave obtained by modulating an audio signal of an interphone and an operation signal carrier wave obtained by modulating an operation signal of a water heater, superimposed on the same signal line. , A remote control system for a water heater that performs interphone call control and hot water heater operation control, the water heater remote control system is composed of a plurality of remote controllers, and each remote controller demodulates an audio signal carrier into an audio signal An FM demodulator, an operational amplifier for amplifying the audio signal demodulated by the FM demodulator, and a controller for controlling the opening of the interphone call line by controlling the operation of the operational amplifier. It is characterized by having.

  Also, the interphone call control method according to the present invention superimposes an audio signal carrier obtained by modulating an interphone audio signal and an operation signal carrier obtained by modulating an operation signal of a water heater on the same signal line. An interphone call control method for a remote control system for a water heater that transmits and receives and performs interphone call control and hot water heater operation control, an FM demodulator for demodulating an audio signal carrier wave into an audio signal, and the FM demodulator An operation amplification unit for amplifying the audio signal demodulated in step 1 and a control unit for controlling the opening of the intercom call line by controlling the operation of the operation amplification unit. The control unit of the sender-side remote controller outputs an operation signal carrier wave to the receiver-side remote controller, and the receiver-side remote controller to which the operation signal carrier wave is input transmits the audio signal carrier wave. The FM demodulator that is output toward the FM demodulator of the hand remote controller and receives the audio signal carrier wave outputs the detection signal of the audio signal carrier wave to the controller of the sender remote controller, and the detection signal The control unit to which is inputted is characterized in that the operation amplification unit of the sender-side remote controller is turned on to open the intercom call line.

  The remote control system for a water heater according to the present invention transmits and receives an audio signal carrier wave obtained by modulating an audio signal of an interphone and an operation signal carrier wave obtained by modulating an operation signal of a water heater, superimposed on the same signal line. , A remote control system for a water heater that performs interphone call control and hot water heater operation control, the water heater remote control system is composed of a plurality of remote controllers, and each remote controller demodulates an audio signal carrier into an audio signal An FM demodulator, an operational amplifier for amplifying the audio signal demodulated by the FM demodulator, and a controller for controlling the opening of the interphone call line by controlling the operation of the operational amplifier. Because it is equipped, until the audio signal carrier wave transmitted from the receiver remote control is received, the beat wave is set in the intercom call waiting state without operating the operational amplifier. It can be prevented from being demodulated. Therefore, generation of noise can be prevented.

  The intercom call control method according to the present invention also superimposes an audio signal carrier obtained by modulating an interphone audio signal and an operation signal carrier obtained by modulating an operation signal of a water heater on the same signal line. An interphone call control method between water heater remote control systems that transmits and receives and performs interphone call control and water heater operation control, each remote control having an FM demodulator for demodulating an audio signal carrier into an audio signal; An operation amplification unit for amplifying the audio signal demodulated by the FM demodulation unit, and a control unit for controlling the opening of the interphone call line by controlling the operation of the operation amplification unit, When operated, the controller of the sender-side remote controller outputs the driving signal carrier wave to the receiver-side remote controller, and the receiver-side remote controller to which the driving signal carrier wave is inputted The carrier wave is output to the FM demodulator of the sender-side remote controller, and the FM demodulator to which the audio signal carrier is input outputs the detection signal of the audio signal carrier to the controller of the sender-side remote controller. Since the control unit to which the detection signal is input turns on the operation amplification unit of the sender-side remote controller and opens the interphone call line, the same effect as described above can be obtained.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a circuit block diagram of a water heater controller 40 according to an embodiment of the present invention.
This water heater controller 40 is configured by connecting a water heater body 10, a kitchen remote controller 20, and a bathroom remote controller 30 through a signal line 2. The signal line 2 carries an audio signal carrier wave (audio carrier) and an operation signal carrier wave (driving signal carrier) that are transmitted and received between the water heater body 10, the kitchen remote controller 20, and the bathroom remote controller 30 in a superimposed manner. This carrier wave (carrier) is obtained by modulating an audio signal and an operation signal to predetermined frequencies. The signal lines 2 are each composed of two lines. The kitchen remote controller 20 and the bathroom remote controller 30 constitute a water heater remote control system 1.

  The water heater body 10 includes a microcomputer (hereinafter referred to as a microcomputer) 11, an operation signal transmission / reception unit 12, and a power supply unit 13. The power supply unit 13 supplies power to the water heater body 10. The microcomputer 11 controls the entirety of the water heater control device 40 such as hot water supply control for supplying hot water to a kitchen or a bathtub by burning a burner (not shown) and reheating control for circulating hot water from the bathtub. It is. The operation signal transmission / reception unit 12 performs operation signal communication with each remote controller (kitchen remote controller 20, bathroom remote controller 30). The operation signal transmitting / receiving unit 12 includes an operation signal receiving unit 12a, a signal superimposing unit 12b, and an operation signal transmitting unit 12c.

  The signal superimposing unit 12b transmits and receives an operation signal carrier wave that is carried with the signal line 2 superimposed. The driving signal carrier wave transmitted from each remote controller is received by the signal superimposing unit 12b and transmitted to the driving signal receiving unit 12a. Further, the operation signal carrier wave transmitted to each remote controller is transmitted from the operation signal transmission unit 12c to the signal superimposing unit 12b and transmitted to each remote controller. The operation signal receiving unit 12 a transmits the operation signal carrier wave transmitted from each remote controller to the microcomputer 11. The operation signal transmission unit 12 c transmits an operation signal carrier wave to each remote controller based on an instruction from the microcomputer 11.

  The kitchen remote controller 20 includes a microcomputer 21, an operation signal transmission / reception unit 22, a power supply unit 23, an intercom call circuit unit 24, a voice synthesis unit 25, and an operation unit 26. The microcomputer 21 controls each carrier wave transmitted from the operation unit 26 to the bathroom remote controller 30 and controls each carrier wave transmitted from the water heater body 10 or the bathroom remote controller 30. The operation signal transmission / reception unit 22 performs the same function as the operation signal transmission / reception unit 12 of the water heater body 10. Further, the power supply unit 23 performs the same function as the power supply unit 13 of the water heater body 10.

  The intercom call circuit unit 24 includes a microphone (hereinafter referred to as a microphone) 24h, a microphone signal amplification unit 24g, an FM modulation unit 24f, a hybrid circuit unit 24a, an FM demodulation unit 24b, an operational amplification unit 24c, and a voice. The amplifier 24d and the speaker 24e are included. The intercom circuit unit 24 amplifies the audio signal obtained from the microphone 24h by the microphone signal amplifying unit 24g, FM modulates the audio signal to the audio signal carrier by the FM modulation unit 24f, and outputs this to the hybrid circuit unit 24a. In addition, the audio signal carrier wave transmitted from the bathroom remote controller 30 is received by the hybrid circuit unit 24a, demodulated into an audio signal by the FM demodulation unit 24b, and amplified by the operational amplification unit 24c and the audio amplification unit 24d. Then, the sound is converted into sound by the speaker 24e.

  The voice synthesizer 25 generates voice signals such as voice guidance and operation sounds. The voice signal generated by the voice synthesizer 25 is amplified by the voice amplifier 24d and converted into voice by the speaker 24e. The operation unit 26 is for a user using the water heater control device 40 to perform various operation settings. The operation unit 26 is provided with a call switch 27.

The bathroom remote control 30 includes a microcomputer 31, an operation signal transmission / reception unit 32, a power supply unit 33, an intercom circuit unit 34, a voice synthesis unit 35, and an operation unit 36. The operation signal transmission / reception unit 32 performs the same functions as the operation signal transmission / reception unit 12 and the operation signal transmission / reception unit 22 of the water heater body 10 and the kitchen remote controller 20. Further, the power supply unit 23 performs the same function as the power supply unit 13 of the water heater body 10.
Furthermore, the intercom call circuit unit 34 includes a microphone 34h, a microphone signal amplification unit 34g, an FM modulation unit 34f, a hybrid circuit unit 34a, an FM demodulation unit 34b, an operational amplification unit 34c, and an audio amplification unit 34d. And a speaker 34e. Each component fulfills the same function as each component constituting the kitchen remote controller 20.
In addition, each part demonstrated above is normally comprised by an electrical and / or electronic circuit.

  Next, an operation for opening an intercom call line will be described. Here, a case where a telephone call is made from the kitchen remote controller 20 to the bathroom remote controller 30 is shown as an example. When a call switch 27 provided in the operation unit 26 of the kitchen remote controller 20 is operated, a call switch ON signal (S1) is output from the operation unit 26 to the microcomputer 21. The microcomputer 21 to which the call switch ON signal (S1) is input outputs a call start signal (S2) toward the operation signal transmission / reception unit 22. The call start signal (S2) is input to the operation signal transmission unit 22c of the operation signal transmission / reception unit 22. The operation signal transmission unit 22c to which the call start signal (S2) is input outputs the call start signal (S2) toward the signal superimposing unit 12b. The signal superimposing unit 12b to which the call start signal (S2) is input transmits the call start signal (S2) to the bathroom remote controller 30 via the signal line 2.

  The call signal (S2) transmitted from the kitchen remote control 20 is received by the operation signal transmission / reception unit 32 of the bathroom remote control 30. This call start signal (S2) is received by the signal superimposing unit 32b of the driving signal transmitting / receiving unit 32 and output to the driving signal receiving unit 32a. The operation signal receiving unit 32a to which the call start signal (S2) is input outputs the call start signal (S3) to the microcomputer 31. The microcomputer 31 to which the call start signal (S3) is input operates the intercom call circuit unit 34. Specifically, the microcomputer 31 outputs the operation start signal (S4) to the operational amplification unit 34c and the FM modulation unit 34f of the interphone call circuit unit 34 to operate the interphone call circuit unit 34. The FM modulation unit 34f to which the operation start signal (S4) is input starts modulation using the audio signal as an audio signal carrier. The audio signal carrier wave (S5) is output toward the hybrid circuit unit 34a. The hybrid circuit unit 34 a to which the audio signal carrier wave (S <b> 5) is input transmits the audio signal carrier wave (S <b> 5) to the kitchen remote controller 20.

  The audio signal carrier wave (S <b> 5) transmitted from the bathroom remote control 30 is first received by the hybrid circuit unit 24 a of the intercom call circuit unit 24 of the bathroom remote control 30. The hybrid circuit unit 24a that has received the audio signal carrier wave (S5) outputs the audio signal carrier wave (S6) toward the FM demodulator 24b. The FM demodulator 24b to which the audio signal carrier wave (S6) is input outputs the carrier wave detection signal (S7) to the microcomputer 21. The microcomputer 31 to which the carrier wave detection signal (S7) is input operates the intercom call circuit unit 24. Specifically, the microcomputer 31 outputs the operation start signal (S8) to the operational amplification unit 24c and the FM modulation unit 24f of the interphone call circuit unit 24 to operate the interphone call circuit unit 24. The FM modulation unit 24f to which the operation start signal (S8) is input starts modulation using the audio signal as an audio signal carrier. The audio signal carrier wave (S9) is output toward the hybrid circuit unit 24a. The hybrid circuit unit 24a to which the audio signal carrier wave (S9) is input transmits the audio signal carrier wave (S9) to the bathroom remote controller 30.

  Based on the above operation, the intercom call line between the kitchen remote controller 20 and the bathroom remote controller 30 is opened. Further, the output of the voice such as the switch operation sound and the voice guidance is performed by the microcomputer 21 receiving the instruction from the operation unit 26 outputting the voice synthesis unit output instruction signal (S10) to the voice synthesis unit 25. . Specifically, when the speech synthesis unit output instruction signal (S10) output from the microcomputer 21 is input to the speech synthesis unit 25, the speech synthesis unit 25 sends the speech synthesis output signal (S11) to the speech amplification unit 24d. The voice amplifying unit 24d to which the voice synthesizing output signal (S11) is output amplifies the voice synthesizing unit output signal (S11), and then is converted into voice by the speaker 24e, whereby voice output is performed. .

FIG. 2 is a timing chart of each remote controller in the water heater remote control system 1.
Based on FIG. 2, the detail of control operation | movement of the remote control system 1 for hot water heaters is demonstrated. Here, the case where the operation unit 26 of the kitchen remote controller 20 is operated to use the intercom is shown as an example.

  First, when a call switch 27 provided in the operation unit 26 of the kitchen remote controller 20 is operated (T1), a call switch ON signal S1 is output from the operation unit 26 to the microcomputer 21. The microcomputer 21 to which the call switch ON signal is input transmits a call start signal S2 to the bathroom remote controller 30 via the operation signal transmission / reception unit 22 (T1 to T2). At this time, the operational amplifier 24c of the kitchen remote controller 20 has not started operation, and the intercom call line is waiting to be opened.

  Next, when the operation signal transmitting / receiving unit 32 of the bathroom remote control 30 receives the call start signal S2, the call start signal S3 is output to the microcomputer 31 (T5 to T6). The microcomputer 31 to which the call start signal S3 is input outputs an operation start signal S4 to the operational amplifier 34c and the FM modulator 34f (T6). The operational amplifier 34c and the FM modulator 34f, to which the operation start signal S4 is input, start operation. That is, the operation of the intercom call circuit unit 34 is started. Specifically, the FM modulation circuit 34f modulates the audio signal into an audio signal carrier wave S5 and outputs the audio signal carrier wave S5 toward the hybrid circuit unit 34a. Then, the hybrid circuit unit 34a transmits the audio signal carrier wave S5 to the kitchen remote controller 20 (T6).

  The audio signal carrier wave S5 is received by the hybrid circuit unit 24a of the intercom call circuit unit 24 of the kitchen remote controller 20. The hybrid circuit unit 24a that has received the audio signal carrier wave S5 outputs the audio signal carrier wave S6 toward the FM demodulator 24b (T6). The FM demodulator 24b to which the audio signal carrier wave S6 is input outputs the carrier wave detection signal S7 to the microcomputer 21 (T6). The microcomputer 21 to which the carrier wave detection signal S7 is input outputs the operation start signal S8 toward the operational amplifier 24c and the FM modulator 24f (T6). The operational amplifier 24c and the FM modulator 24f, to which the operation start signal S8 is input, start to operate and output the audio signal carrier S9 toward the hybrid circuit 24a (T6). As described above, the intercom call line between the kitchen remote controller 20 and the bathroom remote controller 30 is opened.

  Here, from the time when the call start signal S2 is transmitted to the bathroom remote controller 30 (T2) to the time when the audio signal carrier wave S5 is received from the bathroom remote controller (T6), the operational amplifier 24c of the kitchen remote controller 20 is not operated. Since the microcomputer 21 controls, the intercom call line is in a waiting state for opening. That is, even if the speech synthesis unit output instruction signal S10 is output to the speech synthesis unit 25 (T3), or the speech synthesis output signal S11 is output from the speech synthesis unit 25 and the speech amplification unit 24d is operated (T4). Since the operational amplifier 24c is controlled not to operate, the beat wave demodulated by the FM demodulator 24b is not output from the speaker 24e. Therefore, it is possible to prevent noise from occurring.

  In the above embodiment, the case where the intercom operation is performed by operating the call switch 27 of the kitchen remote control 20 is described as an example. However, the intercom operation is performed by operating the call switch 37 of the bathroom remote control 30. It doesn't matter. In this case, the operation is performed by reversing the kitchen remote controller 20 and the bathroom remote controller 30.

It is a circuit block diagram of the water heater controller according to the embodiment of the present invention. It is an operation | movement timing chart of each remote control in the remote control system for water heaters.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Remote control system for water heaters, 2 signal line, 10 water heater main body, 11 microcomputer (control part), 12 operation signal transmission / reception part, 13 power supply part, 12a operation signal reception part, 12b signal superimposition part, 12c operation signal transmission part , 20 Kitchen remote control, 21 Microcomputer (control unit), 22 Operation signal transmission / reception unit, 22a Operation signal reception unit, 22b Signal superimposition unit, 22c Operation signal transmission unit, 23 Power supply unit, 24 Interphone call circuit unit, 24a Hybrid circuit unit 24b FM demodulator, 24c operational amplifier, 24d audio amplifier, 24e speaker, 24f FM modulator, 24g microphone signal amplifier, 24h microphone, 25 voice synthesizer, 26 operation unit, 27 call switch, 30 bathroom remote control, 31 microcomputer (control unit), 32 operation signal transmission / reception Unit, 32a operation signal reception unit, 32b signal superimposition unit, 32c operation signal transmission unit, 33 power supply unit, 34 intercom communication circuit unit, 34a hybrid circuit unit, 34b FM demodulation unit, 34c operational amplification unit, 34d audio amplification unit, 34e Speaker, 34f FM modulator, 34g Microphone signal amplifier, 34h Microphone, 35 Speech synthesizer, 36 Operation unit, 37 Call switch, 40 Water heater controller

Claims (7)

Audio signal carrier wave obtained by modulating interphone audio signal and operation signal carrier wave obtained by modulating operation signal of water heater are transmitted and received superimposed on the same signal line, intercom call control and water heater operation A remote control system for a water heater that performs control,
The water heater remote control system is composed of a plurality of remote controls,
Each remote control
An FM demodulator for demodulating an audio signal carrier into an audio signal;
An operational amplifier for amplifying the audio signal demodulated by the FM demodulator;
A remote control system for a water heater, comprising: a control unit that controls the opening of an interphone communication line by controlling the operation of the operational amplification unit. The control part of the remote controller on the sender side that output the operation signal carrier wave is
The remote control system for a hot water heater according to claim 1, wherein the operational amplifier of the sender-side remote controller is turned on after waiting for an audio signal carrier wave from the receiver-side remote controller. The receiver remote control is
The remote control system for a hot water heater according to claim 1, wherein when an operation signal carrier wave output from the sender-side remote controller is input, an audio signal carrier wave is output toward the sender-side remote controller. The FM demodulator
Has the function to monitor the presence or absence of audio signal carrier wave output from the remote control,
2. The water heater according to claim 1, wherein when an audio signal carrier wave output from the receiver-side remote controller is input, a detection signal of the audio signal carrier wave is output toward a control unit of the sender-side remote controller. Remote control system. The control unit of the sender-side remote controller is
The remote control system for a hot water heater according to claim 1, wherein when the detection signal is input, the operational amplifier is turned on to open the intercom call line.   A water heater control device comprising the remote controller system for a water heater according to any one of claims 1 to 5. Audio signal carrier wave obtained by modulating the interphone audio signal and operation signal carrier wave obtained by modulating the operation signal of the water heater are transmitted and received superimposed on the same signal line, intercom call control and water heater operation An intercom call control method between water heater remote control systems for performing control,
Each remote control
An FM demodulator for demodulating an audio signal carrier into an audio signal;
An operational amplifier for amplifying the audio signal demodulated by the FM demodulator;
A control unit for controlling the opening of the intercom call line by controlling the operation of the operational amplification unit,
When the sender remote control is operated,
The control unit of the sender-side remote controller receives the operation signal carrier wave and outputs it to the sender-side remote controller,
The receiver-side remote controller to which the operation signal carrier wave is input outputs the audio signal carrier wave toward the FM demodulator of the sender-side remote controller,
The FM demodulator to which the audio signal carrier is input outputs a detection signal of the audio signal carrier to the control unit of the sender-side remote controller,
The interphone call control method, wherein the control unit to which the detection signal is input turns on the operation amplification unit of the sender-side remote controller to open the interphone call line.

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