JP2013197962A - Interphone system - Google Patents

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JP2013197962A
JP2013197962A JP2012063891A JP2012063891A JP2013197962A JP 2013197962 A JP2013197962 A JP 2013197962A JP 2012063891 A JP2012063891 A JP 2012063891A JP 2012063891 A JP2012063891 A JP 2012063891A JP 2013197962 A JP2013197962 A JP 2013197962A
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unit
power
handset
resonance
frequency signal
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JP5986404B2 (en
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Yoshiharu Hatano
由晴 羽田野
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Aiphone Co Ltd
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Aiphone Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Telephone Set Structure (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve efficiency in a charge function of a handset and enable the handset to transmit and receive voice signals, by allowing the handset to receive in a non-contact manner electricity generating at an electricity feeding device by combining magnetic fields between a base phone and the handset.SOLUTION: In the interphone system, magnetic fields generating between an electric transmission resonance section 14 of a base phone 1 and an electric reception resonance section 22 of a handset 2 are combined. The resonance section of the handset, composed of serially connected pickup coils L2 and a serial resonance circuit having a resonance capacitor C2, converts electricity transmission signals of received high-frequency signals to a DC power supply, through a diode bridge DB of a rectification section 23 parallely connected to the pickup coils, which is charged to a battery 25. The handset also outputs voice signals overlapped together with the electricity transmission signals on the high-frequency signals from a receiver 21 through a reception section 27, and transmits voice signals inputted to a microphone 20 using high-frequency signals from a mouthpiece 26, which is transmitted in a non-contact manner from the electric reception resonance section to the electric transmission resonance section of the base phone.

Description

本発明は、親機から送受話器に非接触で電力供給を行うとともに音声信号の送受信により通話を成立させるインターホンシステムに係り、特に、親機から非接触で電力供給される送受話器の充電効率を高めたインターホンシステムに関する。   The present invention relates to an interphone system that establishes a call by transmitting and receiving voice signals in a contactless manner to supply power to a handset from a base unit, and in particular, charging efficiency of a handset that is contactlessly powered by a base unit. Related to enhanced intercom system.

従来より、送電部から受電部に非接触で電力供給を行うにあたり、電力を送電するための送電部と、電力を受電するための受電部とを備え、送電部から受電部へ電磁誘電作用を利用して非接触に電力を伝送して、受電部に備えられた二次電池を充電可能な非接触充電器が開示されている(例えば、特許文献1を参照。)。   Conventionally, when power is supplied from a power transmission unit to a power reception unit in a contactless manner, a power transmission unit for transmitting power and a power reception unit for receiving power are provided, and an electromagnetic dielectric action is performed from the power transmission unit to the power reception unit. There has been disclosed a non-contact charger capable of charging a secondary battery provided in a power receiving unit by transmitting power in a non-contact manner (see, for example, Patent Document 1).

特開平11−98706号公報JP 11-98706 A

しかしながら、背景技術に記載した特許文献1の非接触充電器において、送電部及び受電部にはそれぞれ、電磁誘電作用として備えられるコイル(渦巻コイル)と共振コンデンサが並列接続されており、並列共振による電力供給の態様であるため、図2のグラフ図に破線で示すように、二次電池を充電させるにあたって、その充電効率が低かった。   However, in the non-contact charger disclosed in Patent Document 1 described in the background art, a coil (spiral coil) provided as an electromagnetic dielectric action and a resonance capacitor are connected in parallel to each of the power transmission unit and the power reception unit, and parallel resonance is caused. Since it is an aspect of power supply, as shown by the broken line in the graph of FIG. 2, the charging efficiency was low when charging the secondary battery.

また、特許文献1の非接触充電器によれば、その効果として、前述のように送電部から受電部への電磁誘電作用を利用して非接触に電力を伝送し、受電部に備えられた二次電池を充電可能であるものの、送電部及び受電部の間で通話を成立させるための音声信号を伝送する機能が何ら備えられていなかった。   Moreover, according to the non-contact charger of patent document 1, as described above, the power is transmitted in a non-contact manner using the electromagnetic dielectric action from the power transmission unit to the power reception unit, and the power reception unit is provided. Although the secondary battery can be charged, there is no function for transmitting an audio signal for establishing a call between the power transmission unit and the power reception unit.

本発明は、このような難点を解消するためになされたもので、親機の共振部と送受話器の共振部との間で発生する磁界結合により、送電器にて発生する電力を直列共振の態様をもとに非接触で受電器にて受電させることで、送受話器の充電機能の効率化を図るとともに、通話を成立させるための音声信号の送受信が可能なインターホンシステムを提供することを目的とするとしている。   The present invention has been made to solve such a problem, and the power generated by the power transmitter is generated in series resonance by the magnetic field coupling generated between the resonance unit of the master unit and the resonance unit of the handset. The purpose of the present invention is to provide an interphone system capable of improving the efficiency of the charging function of the transmitter / receiver and transmitting / receiving a voice signal for establishing a call by receiving power by the power receiver in a non-contact manner based on the aspect It is supposed to be.

前述の目的を達成するため、本発明の第1の態様であるインターホンシステムは、近傍電磁界において所定の共振周波数をそれぞれ有する親機の送電側共振部と送受話器の受電側共振部との間で発生する磁界結合により、親機にて発生する電力を非接触で送受話器に供給するとともに、通話を成立させるための音声信号を送受信する当該システムである。親機は、音声信号が重畳された送電信号を高周波信号で送出するための高周波信号発生部と、高周波信号発生部より送出された高周波信号を増幅し、増幅された高周波信号を非接触で受電器の受電側共振器に伝送するための高周波信号増幅部とを備えている。送受話器は、受電側共振部にて受信される高周波信号の送電信号を直流電源に変換し、二次電池等の蓄電部に充電するための整流部を備えている。受電側共振部は、直列接続されたピックアップコイル及び共振コンデンサを有する直列共振回路にて構成されている。   In order to achieve the above-described object, an interphone system according to a first aspect of the present invention is provided between a power transmission side resonance unit of a base unit and a power reception side resonance unit of a handset each having a predetermined resonance frequency in a near electromagnetic field. In the system, the power generated in the master unit is supplied to the handset in a contactless manner by the magnetic field coupling generated in step 1, and the voice signal for establishing a call is transmitted and received. The master unit amplifies the high-frequency signal generation unit for transmitting the transmission signal on which the audio signal is superimposed as a high-frequency signal, and the high-frequency signal transmitted from the high-frequency signal generation unit, and receives the amplified high-frequency signal in a contactless manner. A high-frequency signal amplifier for transmitting to the power-receiving-side resonator of the electric device. The handset includes a rectifying unit that converts a high-frequency power transmission signal received by the power-receiving-side resonance unit into a DC power source and charges a power storage unit such as a secondary battery. The power receiving side resonance unit is configured by a series resonance circuit having a pickup coil and a resonance capacitor connected in series.

このような態様のインターホンシステムによれば、親機にて発生する電力として高周波信号の送電信号を非接触で送受話器に供給するにあたり、この送電信号が受信される送受話器の受電側共振部が直列共振回路で構成されるため、当該受電側共振部が有する共振周波数で電流が最大となる。   According to the interphone system of this aspect, when supplying a high-frequency power transmission signal to the handset as the power generated in the base unit, the power-receiving-side resonance unit of the handset that receives this power transmission signal is provided. Since it is composed of a series resonance circuit, the current becomes maximum at the resonance frequency of the power reception side resonance unit.

また、本発明の第2の態様であるインターホンシステムは、本発明の第1の態様において、整流部は、受電側共振部のピックアップコイルに並列接続されるダイオードブリッジにて構成されている。   In the intercom system according to the second aspect of the present invention, in the first aspect of the present invention, the rectification unit is configured by a diode bridge connected in parallel to the pickup coil of the power reception side resonance unit.

このような態様のインターホンシステムによれば、送受話器の受電側共振部が有する共振周波数で電流が最大となる電力を、整流部を経由して蓄電部に充電させることができ、この蓄電部の充電効率が高められる。   According to the interphone system of this aspect, it is possible to charge the power storage unit via the rectifier unit with the power that maximizes the current at the resonance frequency of the power reception side resonance unit of the handset. Charging efficiency is increased.

また、本発明の第3の態様であるインターホンシステムは、本発明の第1の態様又は第2の態様において、送受話器は、受電側共振部のピックアップコイルに並列接続され、受電側共振部にて受信される高周波信号をレシーバから出力させるとともに、マイクに入力される音声信号を高周波信号で送出するための送受話部を備えている。   In the intercom system according to the third aspect of the present invention, in the first aspect or the second aspect of the present invention, the handset is connected in parallel to the pickup coil of the power reception side resonance unit, and the power reception side resonance unit is connected. A high-frequency signal received from the receiver, and a transmission / reception unit for transmitting a voice signal input to the microphone as a high-frequency signal.

このような態様のインターホンシステムによれば、親機にて発生する電力として高周波信号の送電信号を非接触で送受話器に供給するにあたり、この高周波信号の送電信号に重畳させて音声信号の伝送が可能となるばかりでなく、送受話器から親機への音声信号の伝送についても高周波信号の伝送が可能となるため、親機及び送受話器の間で通話を成立させることができる。   According to the interphone system of this aspect, when a power transmission signal of a high-frequency signal is supplied to the handset as power generated in the master unit, a voice signal is transmitted by being superimposed on the power transmission signal of the high-frequency signal. Not only becomes possible, but also high-frequency signals can be transmitted from the handset to the base unit, so that a call can be established between the base unit and the handset.

また、本発明の第4の態様であるインターホンシステムは、本発明の第1の態様乃至第3の態様のうち何れか1の態様において、送電側共振部は、直列接続されたピックアップコイル及び共振コンデンサを有する直列共振回路にて構成されている。   The intercom system according to the fourth aspect of the present invention is the intercom system according to any one of the first to third aspects of the present invention, wherein the power transmission side resonance unit includes a pickup coil and a resonance connected in series. It is composed of a series resonant circuit having a capacitor.

このような態様のインターホンシステムによれば、親機にて発生する電力として高周波信号の送電信号を非接触で送受話器に供給するにあたり、この送電信号を送出する送電側共振部が直列共振回路で構成されるため、当該送電側共振部が有する共振周波数で電流が最大となる送電信号の伝送が可能となる。   According to the interphone system of this aspect, when the power transmission signal of the high frequency signal is supplied to the handset as the power generated in the base unit, the power transmission side resonance unit that transmits the power transmission signal is a series resonance circuit. Since it is configured, it is possible to transmit a power transmission signal that maximizes the current at the resonance frequency of the power transmission side resonance unit.

本発明のインターホンシステムによれば、親機の送電側共振部と送受話器の受電側共振部との間で発生する磁界結合により、親機にて発生する電力を高周波信号の送電信号として直列共振の態様をもとに非接触で送受話器にて受電させることで、この直列共振にかかる共振周波数(直列共振周波数)で電流が最大となるため、送受話器の蓄電部にかかる充電効率が高められる。また、高周波信号の送電信号に重畳させて送受話器への音声信号の伝送が可能となるばかりでなく、送受話器から親機への音声信号の伝送についても高周波信号の伝送が可能となるため、親機及び送受話器の間で通話を成立させることができる。   According to the intercom system of the present invention, the power generated in the base unit is series-resonated as a power transmission signal of the high frequency signal by magnetic field coupling generated between the power transmission side resonance unit of the base unit and the power receiving side resonance unit of the handset. Since the current is maximized at the resonance frequency (series resonance frequency) applied to the series resonance by causing the transmitter / receiver to receive power in a non-contact manner based on the above aspect, the charging efficiency applied to the power storage unit of the transmitter / receiver is increased. . In addition, it is possible not only to transmit the audio signal to the handset by superimposing it on the power transmission signal of the high frequency signal, but also to transmit the high frequency signal for the transmission of the audio signal from the handset to the master unit, A call can be established between the parent device and the handset.

図1(A)は、本発明の実施例によるインターホンシステムの全体構成を示すシステム説明図である。また、図1(B)は、本発明の実施例によるインターホンシステムの具体的な構成を示す回路ブロック図である。FIG. 1A is a system explanatory diagram showing an overall configuration of an intercom system according to an embodiment of the present invention. FIG. 1B is a circuit block diagram showing a specific configuration of the intercom system according to the embodiment of the present invention. 図2は、本発明の実施例によるインターホンシステムにおいて、送受話器に備えられる蓄電部の充電特性を示すグラフ図である。FIG. 2 is a graph showing charging characteristics of the power storage unit provided in the handset in the intercom system according to the embodiment of the present invention.

以下、本発明のインターホンシステムを適用した実施の形態例について、図面を参照して説明する。   Embodiments to which the intercom system of the present invention is applied will be described below with reference to the drawings.

図1(A)は、本発明の実施例によるインターホンシステムの全体構成をシステム説明図である。このインターホンシステムは、例えば、400kHz〜20MHzの周波数環境である近傍電磁界において、後述する所定の共振周波数f1、f2をそれぞれ有する親機1の送電側共振部14と送受話器2の受電側共振部22との間で発生する磁界結合(電磁界結合)により、親機1にて発生する電力を非接触で送受話器2に供給するとともに、通話を成立させるための音声信号を送受信するものである。   FIG. 1A is a system explanatory diagram showing the overall configuration of an intercom system according to an embodiment of the present invention. This intercom system includes, for example, a power transmission side resonance unit 14 of the base unit 1 and a power reception side resonance unit of the handset 2 each having predetermined resonance frequencies f1 and f2 described below in a near electromagnetic field having a frequency environment of 400 kHz to 20 MHz. The power generated by the main unit 1 is contactlessly supplied to the handset 2 by the magnetic field coupling (electromagnetic field coupling) generated between the terminal 22 and the voice signal for establishing a call. .

図1(A)に示す親機1には、前述の通話を成立させるにあたって使用されるマイク10及びスピーカ11が備えられている。また、同図に示す送受話器2には、前述の通話を成立させるにあたって使用されるマイク20及びレシーバ21が備えられている。   A base unit 1 shown in FIG. 1A includes a microphone 10 and a speaker 11 that are used to establish the above-described call. In addition, the handset 2 shown in the figure is provided with a microphone 20 and a receiver 21 that are used to establish the above-described call.

次に、図1(A)に示すインターホンシステムの具体的な構成について、図1(B)の回路ブロック図を参照して説明する。   Next, a specific structure of the intercom system illustrated in FIG. 1A will be described with reference to a circuit block diagram of FIG.

図1(B)に示す親機1には、前述のマイク10及びスピーカ11と、高周波信号発生部12、高周波信号増幅部13、送電側共振部14及び受話部(親機受話部)15とが備えられている。   1B includes a microphone 10 and a speaker 11 described above, a high-frequency signal generating unit 12, a high-frequency signal amplifying unit 13, a power transmission-side resonance unit 14, and a receiving unit (master unit receiving unit) 15. Is provided.

この親機1において、前述のマイク10を有する高周波信号発生部12は、マイク10に送話音声として入力される音声信号に、送受話器2の駆動電源である送電信号を重畳させた高周波信号を生成するためのものである。また、高周波信号増幅部13は、高周波信号生成部12にて生成された高周波信号を増幅し、例えば、100Wの強電波信号として送出するためのものである。   In the base unit 1, the high-frequency signal generation unit 12 having the microphone 10 described above generates a high-frequency signal obtained by superimposing a power transmission signal, which is a driving power source of the handset 2, on a voice signal input to the microphone 10 as a transmission voice. It is for generating. The high-frequency signal amplifying unit 13 amplifies the high-frequency signal generated by the high-frequency signal generating unit 12 and sends it out as, for example, a 100 W strong radio signal.

送電側共振部14は、式(1)に示す直列共振周波数f1の条件を有するピックアップコイルL1及び共振コンデンサC1が直列接続されており、高周波信号増幅部13にて増幅された高周波信号を非接触で送受話器2に伝送させるとともに、送受話器2から伝送されてくる高周波信号を非接触で受信し、受信された高周波信号である、送受話器2のマイク20に送話音声として入力された音声信号を取出して受話部15に送出するためのものである。   The power transmission side resonance unit 14 is connected in series with a pickup coil L1 having a condition of the series resonance frequency f1 shown in the equation (1) and a resonance capacitor C1, and the high-frequency signal amplified by the high-frequency signal amplification unit 13 is contactless. Is transmitted to the handset 2, receives a high-frequency signal transmitted from the handset 2 in a non-contact manner, and is a received high-frequency signal that is input to the microphone 20 of the handset 2 as a transmitted voice. Is taken out and sent to the receiver 15.

Figure 2013197962
受話部15は、送電側共振部14にて取出される音声信号を受信し、スピーカ11から受話音声として出力するためのものである。
Figure 2013197962
The receiving unit 15 is for receiving the audio signal extracted by the power transmission side resonance unit 14 and outputting it as the received audio from the speaker 11.

ここで、親機1の具体的な接続の態様として、高周波信号発生部12には、高周波信号増幅部13、送電側共振部14の直列接続された共振コンデンサC1及びピックアップコイルL1を順次経由して基準電位点が接続されている。また、高周波信号増幅部13と送電側共振部14の共振コンデンサC1との間には、受話部15を経由してスピーカ11が接続されている。   Here, as a specific connection mode of the base unit 1, the high-frequency signal generation unit 12 is sequentially passed through a high-frequency signal amplification unit 13, a resonance capacitor C 1 connected in series with a power transmission side resonance unit 14, and a pickup coil L 1. The reference potential point is connected. A speaker 11 is connected between the high-frequency signal amplifying unit 13 and the resonance capacitor C 1 of the power transmission side resonance unit 14 via the receiver unit 15.

また、同図に示す送受話器2には、前述のマイク20及びレシーバ21と、受電側共振部22、整流部23、定電圧ダイオード(ツェナーダイオード)24、蓄電部25、送話部(送受話器送話部)26及び受話部(送受話器受話部)27とが備えられている。   In addition, the handset 2 shown in the figure includes the microphone 20 and the receiver 21, the power receiving side resonance unit 22, the rectification unit 23, the constant voltage diode (zener diode) 24, the power storage unit 25, and the transmitter (handset). A transmitter (transmitter) 26 and a receiver (transmitter / receiver receiver) 27 are provided.

この送受話器2において、受電側共振部22は、式(2)に示す直列共振周波数f2の条件を有するピックアップコイルL2及び共振コンデンサC2が直列接続されており、電磁誘導を利用しMピックアップコイルL2で非接触によって親機1からの高周波信号の送電信号を取出して整流部23に送出するとともに、同様に取出した高周波信号の音声信号を受話部27に送出する受信機能と、マイク20に送話音声として入力される音声信号を高周波信号で親機1に非接触で伝送させるための送信機能とを有している。   In the transmitter / receiver 2, the power receiving side resonance unit 22 includes a pickup coil L2 and a resonance capacitor C2 having a series resonance frequency f2 condition shown in Expression (2) connected in series, and M pickup coil L2 using electromagnetic induction. In a non-contact manner, the power transmission signal of the high frequency signal from the main unit 1 is taken out and sent to the rectification unit 23, and the reception function of sending the voice signal of the high frequency signal similarly taken out to the reception unit 27 and the transmission to the microphone 20 It has a transmission function for transmitting a voice signal input as voice to the base unit 1 in a non-contact manner as a high-frequency signal.

Figure 2013197962
整流部23は、受電側共振部22にて受信される高周波信号の送電信号を直流電源に変換するためのものであり、ダイオードブリッジDBにて構成されている。また、定電圧ダイオード24は、整流部23にて変換された直流電源をもとに当該ダイオードに逆方向の電流を流すことで、このダイオードの両端に一定の電圧レベルを確保するためのものである。さらに、蓄電部25は、二次電池等を構成するコンデンサC3にて構成され、定電圧ダイオード24にて確保された一定の電圧レベルの直流電源を、当該送受話器の駆動電源として充電するためのものある。
Figure 2013197962
The rectifying unit 23 is for converting a power transmission signal of a high frequency signal received by the power receiving side resonance unit 22 into a DC power source, and is configured by a diode bridge DB. The constant voltage diode 24 is for ensuring a constant voltage level at both ends of the diode by flowing a reverse current to the diode based on the DC power converted by the rectifier 23. is there. Further, the power storage unit 25 is constituted by a capacitor C3 that constitutes a secondary battery or the like, and is used for charging a DC power source having a constant voltage level secured by the constant voltage diode 24 as a driving power source for the handset. There are things.

送話部26は、マイク20に送話音声として入力される音声信号を、高周波信号で受電側共振部22から非接触で親機1に伝送させるためのものである。また、受話部27は、受電側共振部22にて取出される音声信号を受信し、レシーバ21から受話音声として出力するためのものである。   The transmitter 26 is for transmitting a voice signal input to the microphone 20 as a voice to be transmitted to the parent device 1 from the power receiving resonance unit 22 in a non-contact manner as a high frequency signal. The receiving unit 27 is for receiving the audio signal extracted by the power receiving side resonance unit 22 and outputting it as the received audio from the receiver 21.

ここで、送受話器2の具体的な接続の態様として、整流部23を構成するダイオードブリッジDBの整流側の一方は、受電側共振部22の共振コンデンサC2を経由してピックアップコイルL2の一端側に接続されており、ダイオードブリッジDBの整流側の他方は、ピックアップコイルL2の他端側及び基準電位点の間に接続されている。また、ダイオードブリッジDBの(+)端子及び(−)端子の両端子間には、定電圧ダイオード24と、蓄電部25を構成するコンデンサC3がそれぞれ並列接続されている。さらに、ダイオードブリッジDBの整流側の一方と共振コンデンサC2との間、ダイオードブリッジDBの整流側の他方とピックアップコイルL2の他端側及び基準電位点との間には、入力側がマイク20に接続された送話部26の出力側と、出力側がレシーバ21に接続された受話部27の入力側とがそれぞれ接続されている。   Here, as a specific connection mode of the handset 2, one side of the rectification side of the diode bridge DB constituting the rectification unit 23 is connected to one end side of the pickup coil L2 via the resonance capacitor C2 of the power reception side resonance unit 22. The other of the rectification side of the diode bridge DB is connected between the other end side of the pickup coil L2 and the reference potential point. Further, between the (+) terminal and the (−) terminal of the diode bridge DB, a constant voltage diode 24 and a capacitor C3 constituting the power storage unit 25 are respectively connected in parallel. Furthermore, the input side is connected to the microphone 20 between one side of the rectification side of the diode bridge DB and the resonance capacitor C2, and between the other side of the rectification side of the diode bridge DB and the other end side of the pickup coil L2 and the reference potential point. The output side of the transmitted transmitter 26 is connected to the input side of the receiver 27 whose output side is connected to the receiver 21.

このように構成された本発明の実施例によるインターホンシステムにおいて、以下、具体的な動作について説明する。   In the intercom system according to the embodiment of the present invention configured as described above, a specific operation will be described below.

図1(A)、(B)に示す親機1の高周波信号発生部12は、マイク10に入力された当該親機のユーザの送話音声である音声信号に、送受話器2の駆動電源である送電信号を重畳させた高周波信号(以下、親機高周波信号という。)を生成する。この親機高周波信号は、高周波信号増幅部13を経由して例えば、100Wの強電波信号に増幅される。この後、高周波信号増幅部13を経由して増幅された親機高周波信号は、送電側共振部14から送受話器2の受電側共振部22に非接触で伝送される。ここで、送電側共振部14は、図示のように直列接続されたピックアップコイルL1及び共振コンデンサC1で構成されているため、この共振部14が有する前述の式(1)に示す直列共振周波数f1で、送電信号にかかる電流が最大となる。   1A and 1B, the high frequency signal generation unit 12 of the base unit 1 converts the voice signal, which is the transmission voice of the user of the base unit, input to the microphone 10 by the driving power source of the handset 2. A high-frequency signal (hereinafter, referred to as a master unit high-frequency signal) on which a certain power transmission signal is superimposed is generated. The master high-frequency signal is amplified to a strong radio wave signal of 100 W, for example, via the high-frequency signal amplifier 13. Thereafter, the master high frequency signal amplified via the high frequency signal amplifying unit 13 is transmitted from the power transmission side resonance unit 14 to the power reception side resonance unit 22 of the handset 2 in a non-contact manner. Here, since the power transmission side resonance unit 14 is composed of a pickup coil L1 and a resonance capacitor C1 connected in series as shown in the figure, the series resonance frequency f1 shown in the above equation (1) of the resonance unit 14 is provided. Thus, the current applied to the power transmission signal is maximized.

また、送受話器2の受電側共振部22は、図示のように直列接続されたピックアップコイルL2及び共振コンデンサC2で構成されているため、電磁誘導を利用してピックアップコイルL2で非接触によって受信された親機高周波信号の送電信号にかかる電流が、この共振部22が有する前述の式(2)に示す直列共振周波数f2で最大となり、整流部23を構成するダイオードブリッジDBを経由して整流された後、定電圧ダイオード24を経由して一定の電圧レベルが確保された直流電源を、蓄電部25を構成するコンデンサC3に充電させることができる。   Further, the power receiving side resonating unit 22 of the handset 2 is composed of a pickup coil L2 and a resonance capacitor C2 connected in series as shown in the figure, so that it is received in a non-contact manner by the pickup coil L2 using electromagnetic induction. The current applied to the power transmission signal of the main unit high-frequency signal becomes maximum at the series resonance frequency f2 shown in the above-described equation (2) of the resonance unit 22 and is rectified via the diode bridge DB constituting the rectification unit 23. After that, the DC power source in which a constant voltage level is secured via the constant voltage diode 24 can be charged to the capacitor C3 constituting the power storage unit 25.

ここまでの動作によって、送受話器2によれば、受電側共振部22にて取出される送電信号を、受電側共振部22にかかる共振電流で蓄電部25を構成するコンデンサC3に充電させることができるため、図2(のグラフ図)に実線(太実線)で示すように、蓄電部25を構成するコンデンサC3への急速な充電が可能となり、充電にかかる時間が短縮され、その充電効率が高められる。   With the operation up to this point, according to the handset 2, the power transmission signal taken out by the power reception side resonance unit 22 can be charged to the capacitor C 3 constituting the power storage unit 25 by the resonance current applied to the power reception side resonance unit 22. Therefore, as shown by the solid line (thick solid line) in FIG. 2 (the graph of FIG. 2), the capacitor C3 constituting the power storage unit 25 can be rapidly charged, the time required for charging is shortened, and the charging efficiency is improved. Enhanced.

さらに、送受話器2の受電側共振部22は、前述のように非接触で受信した親機高周波信号から音声信号を取出し、受話部27を経由してレシーバ21に送出することで、親機1のユーザによる送話音声を、受話音声としてレシーバ21から出力させることができる。   Further, the power receiving side resonance unit 22 of the handset 2 takes out a voice signal from the base unit high frequency signal received in a non-contact manner as described above, and sends it to the receiver 21 via the handset unit 27, whereby the base unit 1. Can be output from the receiver 21 as received voice.

一方、送受話器2のユーザによる送話音声は、送話部20から高周波信号の音声信号として送出される。この高周波信号(以下、送受話器高周波信号という。)は、受電側共振部22から親機1の送電側共振部14に非接触で伝送される。   On the other hand, the voice transmitted by the user of the handset 2 is transmitted from the transmitter 20 as a high frequency signal. This high-frequency signal (hereinafter referred to as a handset high-frequency signal) is transmitted from the power-receiving-side resonance unit 22 to the power-transmission-side resonance unit 14 of the base unit 1 without contact.

親機1の送電側共振部14は、非接触で受信した送受話器高周波信号である音声信号を取出し、受話部15を経由してスピーカ11に送出することで、送受話器2のユーザによる送話音声を、受話音声としてスピーカ11から出力させることができる。   The power transmission side resonance unit 14 of the base unit 1 takes out a voice signal, which is a handset high-frequency signal received in a non-contact manner, and sends it to the speaker 11 via the handset unit 15, so that the user of the handset 2 can transmit the speech. Voice can be output from the speaker 11 as received voice.

前述までの説明から明らかなように、本発明の実施例によれば、親機1の送電側共振部14と送受話器2の受電側共振部22との間で発生する磁界結合により、親機1にて発生する電力を高周波信号の送電信号として直列共振の態様をもとに非接触で送受話器2にて受電させることで、この直列共振にかかる共振周波数(直列共振周波数)f1、f2で電流が最大となるため、送受話器2の蓄電部25にかかる充電効率が高められる。また、高周波信号の送電信号に重畳させて送受話器2への音声信号の伝送が可能となるばかりでなく、送受話器2から親機1への音声信号の伝送についても高周波信号の伝送が可能となるため、親機1及び送受話器2の間で通話を成立させることができる。   As is apparent from the above description, according to the embodiment of the present invention, due to the magnetic field coupling generated between the power transmission side resonance unit 14 of the base unit 1 and the power reception side resonance unit 22 of the handset 2, The power generated in 1 is received by the handset 2 in a non-contact manner as a high-frequency power transmission signal based on the mode of series resonance, so that the resonance frequencies (series resonance frequencies) f1 and f2 relating to this series resonance are obtained. Since the current is maximized, the charging efficiency applied to the power storage unit 25 of the handset 2 is increased. Further, not only can the audio signal be transmitted to the handset 2 by superimposing the high frequency signal on the power transmission signal, but also the audio signal can be transmitted from the handset 2 to the base unit 1. Therefore, a call can be established between the base unit 1 and the handset 2.

本発明のインターホンシステムにおいては、特定の実施の形態をもって説明してきたが、この形態に限定されるものでなく、本発明の効果を奏する限り、これまで知られた如何なる構成の当該システムであっても採用できるということはいうまでもないことである。   The intercom system of the present invention has been described with a specific embodiment. However, the present invention is not limited to this embodiment, and the system has any configuration known so far as long as the effect of the present invention is achieved. It goes without saying that can also be adopted.

1……親機
14……送電側共振部
L1……ピックアップコイル
C1……共振コンデンサ
f1……(送電側共振部が有する)共振周波数(直列共振周波数)
2……送受話器
20……マイク
21……レシーバ
22……受電側共振部
L2……ピックアップコイル
C2……共振コンデンサ
23……整流部
DB……ダイオードブリッジ
25……蓄電部
26……送話部
27……受話部
f2……(受電側共振部が有する)共振周波数(直列共振周波数)
1 …… Base 14 …… Power transmission side resonance part L1 …… Pickup coil C1 …… Resonance capacitor f1 …… Resonance frequency (series resonance frequency)
2 …… Transmitter / receiver 20 …… Mic 21 …… Receiver 22 …… Receiving side resonance part L2 …… Pickup coil C2 …… Resonance capacitor 23 …… Rectification part DB …… Diode bridge 25 …… Power storage part 26 …… Transmission Part 27 …… Receiving part f2 …… Resonance frequency (series resonance frequency)

Claims (4)

近傍電磁界において所定の共振周波数(f1、f2)をそれぞれ有する親機(1)の送電側共振部(14)と送受話器(2)の受電側共振部(22)との間で発生する磁界結合により、前記送電器にて発生する電力を非接触で前記受電器に供給するとともに、通話を成立させるための音声信号を送受信するインターホンシステムであって、
前記親機は、前記音声信号が重畳された送電信号を高周波信号で送出するための高周波信号発生部(12)と、前記高周波信号発生部より送出された前記高周波信号を増幅し、前記増幅された高周波信号を非接触で前記受電器の前記受電側共振器に伝送するための高周波信号増幅部(13)とを備え、
前記送受話器は、前記受電側共振部にて受信される前記高周波信号の送電信号を直流電源に変換し、二次電池等の蓄電部(25)に充電するための整流部(23)を備え、
前記受電側共振部は、直列接続されたピックアップコイル(L2)及び共振コンデンサ(C2)を有する直列共振回路にて構成されることをインターホンシステム。
Magnetic field generated between the power transmission side resonance unit (14) of the base unit (1) and the power reception side resonance unit (22) of the handset (2) each having a predetermined resonance frequency (f1, f2) in the near electromagnetic field. An intercom system that, by coupling, supplies power generated by the power transmitter to the power receiver in a contactless manner, and transmits and receives audio signals for establishing a call,
The master unit is configured to amplify the high-frequency signal sent from the high-frequency signal generator, the high-frequency signal generator (12) for sending the power transmission signal on which the audio signal is superimposed, and the amplified signal A high frequency signal amplifying unit (13) for transmitting the high frequency signal in a non-contact manner to the power receiving resonator of the power receiver,
The handset includes a rectifying unit (23) for converting a power transmission signal of the high-frequency signal received by the power-receiving-side resonance unit into a DC power source and charging a power storage unit (25) such as a secondary battery. ,
The intercom system, wherein the power reception side resonance unit is configured by a series resonance circuit having a pickup coil (L2) and a resonance capacitor (C2) connected in series.
前記整流部は、前記受電側共振部の前記ピックアップコイルに並列接続されるダイオードブリッジ(DB)にて構成されることを特徴とする請求項1記載のインターホンシステム。   2. The intercom system according to claim 1, wherein the rectification unit is configured by a diode bridge (DB) connected in parallel to the pickup coil of the power reception side resonance unit. 前記送受話器は、前記受電側共振部の前記ピックアップコイルに並列接続され、前記受電側共振部にて受信される前記高周波信号の音声信号をレシーバ(21)から出力させるとともに、マイク(20)に入力される音声信号を高周波信号で送出するための送受話部(26、27)を備えることを特徴とする請求項1又は請求項2記載のインターホンシステム。   The handset is connected in parallel to the pickup coil of the power reception side resonance unit, and outputs a high frequency signal received from the power reception side resonance unit from a receiver (21), and also to a microphone (20). The intercom system according to claim 1 or 2, further comprising a transmission / reception unit (26, 27) for transmitting an input audio signal as a high-frequency signal. 前記送電側共振部は、直列接続されたピックアップコイル(L1)及び共振コンデンサ(C1)を有する直列共振回路にて構成されることを特徴とする請求項1乃至請求項3のうち何れか1項記載のインターホンシステム。   The said power transmission side resonance part is comprised by the series resonance circuit which has the pick-up coil (L1) and resonance capacitor (C1) which were connected in series, Any one of Claims 1 thru | or 3 characterized by the above-mentioned. The listed intercom system.
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