JP4735198B2 - Relay drive device - Google Patents
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- JP4735198B2 JP4735198B2 JP2005324489A JP2005324489A JP4735198B2 JP 4735198 B2 JP4735198 B2 JP 4735198B2 JP 2005324489 A JP2005324489 A JP 2005324489A JP 2005324489 A JP2005324489 A JP 2005324489A JP 4735198 B2 JP4735198 B2 JP 4735198B2
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Description
本発明は、リレーの駆動と駆動検知を異なる制御装置で行う場合に、通信を用いてゼロクロス駆動を行うリレー駆動装置に関するものである。 The present invention relates to a relay drive device that performs zero-cross drive using communication when relay drive and drive detection are performed by different control devices.
従来、ゼロクロス駆動を行うリレー駆動装置は、１つの制御部（マイクロコンピュータ）でリレー駆動とリレー駆動検知を行うものが知られている（例えば、特許文献１参照）。
しかしながら、前記従来の構成では、異なる制御部でリレー駆動とリレー接点検知を行わなくてはならない場合には適さない。例えば、タイマー管理をしている制御部でリレー駆動を行い、電源電圧の検知をアナログで行っている制御部でリレー接点検知を行いたい場合や、絶縁距離の確保のためにリレー駆動を行う制御部の電源回路とリレー接点検知を行う制御部の電源回路を絶縁しなくてはいけない場合など、異なる制御部でリレー駆動とリレー接点検知を行わなくてはならない場合がある。この場合は、リレー接点の検知をしてから商用交流電源がゼロクロスする時点までの時間を、リレー駆動を行う制御部に知らせる必要があるが、制御部間の通信時間がリレーの駆動時間に対して、無視できないほど大きく、かつ既知ではない場合、通信時間分の遅れの分、リレー駆動のタイミングがずれてしまうという課題がある。 However, the conventional configuration is not suitable when the relay drive and relay contact detection must be performed by different control units. For example, when relay control is performed by a control unit that performs timer management and relay contact detection is performed by a control unit that performs power supply voltage detection in analog, or when relay drive is performed to ensure an insulation distance In some cases, it is necessary to perform relay drive and relay contact detection with different control units, such as when the power circuit of the control unit and the power supply circuit of the control unit that performs relay contact detection must be insulated. In this case, it is necessary to inform the control unit that performs relay driving of the time from when the relay contact is detected until the commercial AC power supply zero-crosses, but the communication time between the control units is less than the relay driving time. Thus, if it is too large to be ignored and is not known, there is a problem that the relay drive timing is shifted by the delay of the communication time.
本発明は、前記従来の課題を解決するもので、異なる制御部でリレーの駆動と接点検知を行う場合でも、商用交流電源のゼロクロス付近でリレー駆動することができるリレー駆動装置を提供することを目的とする。 The present invention solves the above-mentioned conventional problems, and provides a relay driving device capable of relay driving near the zero cross of a commercial AC power supply even when relay driving and contact detection are performed by different control units. Objective.
前記従来の課題を解決するために、本発明のリレー駆動装置は、リレー駆動開始信号またはリレー駆動停止信号を出力する第１の制御装置と、第１の制御装置による次のリレー駆動開始信号またはリレー駆動停止信号出力のタイミング情報を得る第２の制御装置と、第２の制御装置によるタイミング情報を第１の制御装置へ送信する通信手段とを備え、前記第１の制御装置は、商用交流電源のゼロボルトに同期した信号を発生する第１の電源同期発生手段と、商用交流電源の１周期中の予め決められた複数のタイミング中のいずれか任意のタイミングでリレーにリレー駆動開始信号またはリレー駆動停止信号を出力する第１の制御部とを有し、前記第２の制御装置は、商用交流電源のゼロボルトに同期した信号を発生する第２の電源同期発生手段と、リレー接点の開閉を検知するリレー接点検知手段と、第２の電源同期発生手段およびリレー接点検知手段の信号によりタイミング情報を得る第２の制御部とを有したリレー駆動装置とするものである。 In order to solve the above-described conventional problems, a relay drive device according to the present invention includes a first control device that outputs a relay drive start signal or a relay drive stop signal, and a next relay drive start signal generated by the first control device or A second control device that obtains timing information of the relay drive stop signal output; and a communication unit that transmits timing information from the second control device to the first control device. A first power supply synchronization generating means for generating a signal synchronized with zero volts of the power supply, and a relay drive start signal or relay to the relay at any arbitrary timing among a plurality of predetermined timings in one cycle of the commercial AC power supply A first control unit that outputs a drive stop signal, and the second control device generates a second power supply synchronization signal that generates a signal synchronized with zero volts of a commercial AC power supply. A relay driving device having a stage, a relay contact detecting means for detecting opening and closing of the relay contact, and a second control unit for obtaining timing information by signals from the second power source synchronization generating means and the relay contact detecting means It is.
これによって、異なる制御部でリレーの駆動と接点検知を行う場合でも、リレー駆動のタイミングが通信の時間分、ずれることなく、商用交流電源のゼロクロス付近でリレー駆動することができる。 Accordingly, even when relay driving and contact detection are performed by different control units, relay driving can be performed near the zero cross of the commercial AC power supply without the relay driving timing being shifted by the communication time.
本発明のリレー駆動装置は、異なる制御部でリレーの駆動と接点検知を行う場合でも、商用交流電源のゼロクロス付近でリレー駆動することができる。 The relay drive device of the present invention can be driven in the vicinity of the zero cross of the commercial AC power supply even when the relay is driven and the contact is detected by different control units.
第１の発明は、リレー駆動開始信号またはリレー駆動停止信号を出力する第１の制御装置と、第１の制御装置による次のリレー駆動開始信号またはリレー駆動停止信号出力のタイミング情報を得る第２の制御装置と、第２の制御装置によるタイミング情報を第１の制御装置へ送信する通信手段とを備え、前記第１の制御装置は、商用交流電源のゼロボルトに同期した信号を発生する第１の電源同期発生手段と、商用交流電源の１周期中の予め決められた複数のタイミング中のいずれか任意のタイミングでリレーにリレー駆動開始信号またはリレー駆動停止信号を出力する第１の制御部とを有し、前記第２の制御装置は、商用交流電源のゼロボルトに同期した信号を発生する第２の電源同期発生手段と、リレー接点の開閉を検知するリレー接点検知手段と、第２の電源同期発生手段およびリレー接点検知手段の信号によりタイミング情報を得る第２の制御部とを有したリレー駆動装置とすることにより、異なる制御部でリレーの駆動と接点検知を行う場合でも、リレー駆動のタイミングが通信の時間分、ずれることなく、商用交流電源のゼロクロス付近でリレー駆動することができる。 1st invention which outputs a relay drive start signal or a relay drive stop signal, and 2nd which obtains the timing information of the next relay drive start signal or relay drive stop signal output by a 1st control apparatus And a communication means for transmitting timing information from the second control device to the first control device, wherein the first control device generates a signal synchronized with zero volts of the commercial AC power supply. And a first control unit that outputs a relay drive start signal or a relay drive stop signal to the relay at any arbitrary timing among a plurality of predetermined timings in one cycle of the commercial AC power supply. And the second control device includes a second power supply synchronization generating means for generating a signal synchronized with zero volts of the commercial AC power supply, and a relay contact for detecting opening and closing of the relay contact. By using a relay drive device having a second control unit that obtains timing information based on signals from the second power source synchronization generation unit and the relay contact detection unit, the relay drive and the contact detection are performed by different control units. Even when the relay is performed, the relay drive can be performed near the zero cross of the commercial AC power supply without the relay drive timing being shifted by the communication time.
第２の発明は、特に、第１の発明において、第１の制御部は、第２の制御部からのタイミング情報と所定のしきい値との比較に基づいて次のリレー駆動開始信号またはリレー駆動停止信号出力のタイミングを調整することにより、第１の発明と同様な効果を得ることができる。 According to a second aspect of the invention, in particular, in the first aspect of the invention, the first control unit determines whether the next relay drive start signal or relay is based on a comparison between timing information from the second control unit and a predetermined threshold value. By adjusting the timing of driving stop signal output, the same effect as that of the first invention can be obtained.
第３の発明は、特に、第１の発明において、第２の制御装置は、商用交流電源の電圧を検知する電圧検知手段を備え、電圧検知手段の検知結果がしきい値を超えたタイミングをとらえ、このタイミングが商用交流電源の１周期中の予め決められた複数のタイミング中どのタイミングであるかの情報に基づいて、次にリレー駆動開始信号またはリレー駆動停止信号を出力するタイミングを調整することにより、商用交流電源のゼロクロス付近でリレー駆動することができる。 In a third aspect of the invention, in particular, in the first aspect of the invention, the second control device includes voltage detection means for detecting the voltage of the commercial AC power supply, and the timing when the detection result of the voltage detection means exceeds the threshold value. Then, based on information indicating which timing is a predetermined timing among a plurality of predetermined timings in one cycle of the commercial AC power supply, the timing to output the relay driving start signal or the relay driving stop signal next is adjusted. Thus, relay driving can be performed near the zero cross of the commercial AC power supply.
第４の発明は、特に、第１の発明において、第２の制御装置は、商用交流電源の電流を検知する電流検知手段を備え、電流検知手段の検知結果がしきい値を超えたタイミングをとらえ、このタイミングが商用交流電源の１周期中の予め決められた複数のタイミング中どのタイミングであるかの情報に基づいて、次にリレー駆動開始信号またはリレー駆動停止信号を出力するタイミングを調整することにより、第３の発明と同様な効果を得ることができる。 According to a fourth aspect of the invention, in particular, in the first aspect of the invention, the second control device includes current detection means for detecting the current of the commercial AC power supply, and the timing when the detection result of the current detection means exceeds the threshold value. Then, based on information indicating which timing is a predetermined timing among a plurality of predetermined timings in one cycle of the commercial AC power supply, the timing to output the relay driving start signal or the relay driving stop signal next is adjusted. Thus, the same effect as that of the third invention can be obtained.
第５の発明は、特に、第１〜第４のいずれか１つの発明において、次にリレー駆動開始信号またはリレー駆動停止信号を出力するタイミングを調整した回数が、連続してしきい値を越えると、リレーの駆動を禁止することにより、リレーの開閉が耐久回数を超えたなどの理由で、リレー駆動がゼロクロス付近で行われなくなってきた場合は、リレー駆動を禁止して安全を確保する。 In the fifth invention, in particular, in any one of the first to fourth inventions, the number of times of adjusting the timing for outputting the relay drive start signal or the relay drive stop signal next exceeds the threshold value continuously. If the relay drive is not performed near the zero cross due to the relay opening / closing exceeding the endurance count by prohibiting the relay drive, the relay drive is prohibited to ensure safety.
第６の発明は、特に、第５の発明において、リレーの駆動を禁止したことを報知する報知手段を備えたことにより、安全のためにリレー駆動を禁止したことをユーザに伝えることができる。 In the sixth aspect of the invention, in particular, in the fifth aspect of the invention, by providing an informing means for informing that the driving of the relay is prohibited, the user can be informed that the relay driving is prohibited for safety.
以下、本発明の実施の形態について、図面を参照しながら説明する。なお、本実施の形態によって、本発明が限定されるものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.
（実施の形態１）
図１、図２は、本発明の実施の形態１におけるリレー駆動装置を示している。
(Embodiment 1)
1 and 2 show a relay drive apparatus according to Embodiment 1 of the present invention.
図に示すように、本実施の形態におけるリレー駆動装置は、リレー駆動開始信号またはリレー駆動停止信号を出力する第１の制御装置４と、第１の制御装置４による次のリレー駆動開始信号またはリレー駆動停止信号出力のタイミングを調整する第２の制御装置９と、第２の制御装置９によるタイミング情報を第１の制御装置４へ送信する絶縁された通信手段８ａ、８ｂとを備えている。 As shown in the figure, the relay drive device in the present embodiment includes a first control device 4 that outputs a relay drive start signal or a relay drive stop signal, and a next relay drive start signal by the first control device 4 or A second control device 9 that adjusts the timing of the relay drive stop signal output and insulated communication means 8a and 8b that transmit timing information from the second control device 9 to the first control device 4 are provided. .
前記第１の制御装置４は、商用交流電源１から絶縁された電源によって駆動されるものであり、商用交流電源１のゼロボルトに同期した信号を発生する第１の電源同期発生手段６と、この第１の電源同期発生手段６の信号が入力され、商用交流電源１の１周期中の予め決められた複数のタイミング中のいずれか任意のタイミングでリレー３にリレー駆動開始信号またはリレー駆動停止信号を出力する第１の制御部（マイクロコンピュータ）５と、この第１の制御部５により制御されリレー３を駆動するリレー駆動手段７と、通信手段８ａとを有している。 The first control device 4 is driven by a power source insulated from the commercial AC power source 1, and includes first power source synchronization generating means 6 that generates a signal synchronized with zero volts of the commercial AC power source 1, and this The relay drive start signal or relay drive stop signal is sent to the relay 3 at any timing among a plurality of predetermined timings in one cycle of the commercial AC power supply 1 when the signal of the first power supply synchronization generating means 6 is input. The first control unit (microcomputer) 5 that outputs the signal, the relay driving unit 7 that is controlled by the first control unit 5 to drive the relay 3, and the communication unit 8a.
また、前記第２の制御装置９は、第１の制御装置４と同様の絶縁手段によって、商用交流電源１から絶縁された電源により駆動されるものであり、商用交流電源１のゼロボルトに同期した信号を発生する第２の電源同期発生手段１１と、リレー接点３ａの開閉を検知するリレー接点検知手段１２と、第２の電源同期発生手段１１およびリレー接点検知手段１２の信号によりタイミング情報を得る第２の制御部（マイクロコンピュータ）１０と、通信手段８ｂとを有している。 The second control device 9 is driven by a power source insulated from the commercial AC power source 1 by the same insulating means as the first control device 4, and is synchronized with zero volts of the commercial AC power source 1. Timing information is obtained from the signals of the second power supply synchronization generation means 11 for generating a signal, the relay contact detection means 12 for detecting the opening and closing of the relay contact 3a, and the signals of the second power supply synchronization generation means 11 and the relay contact detection means 12. It has the 2nd control part (microcomputer) 10 and the communication means 8b.
なお、リレー３によるリレー接点３ａの開閉により、商用交流電源１からヒーターなどの負荷２への通電を制御するものである。 Note that energization from the commercial AC power source 1 to the load 2 such as a heater is controlled by opening and closing the relay contact 3 a by the relay 3.
次に、図２に基づき、第１、第２の制御装置４、９の駆動動作について説明する。 Next, the driving operation of the first and second control devices 4 and 9 will be described with reference to FIG.
図には、商用交流電源（１３）、ゼロボルトパルス（１４）、ゼロボルトパルス（１４）を１５等分した０から１４のタイミング（１５）、第１の制御装置４における１回目のリレー駆動（１６）、第２の制御装置９における１回目のリレー接点検知（１７）、ゼロボルトパルス（１４）と１回目のリレー接点検知（１７）のタイミング差Ｔｄｔ（１８）、第１の制御部５における２回目のリレー駆動（１９）、第２の制御装置９における２回目のリレー接点検知（２０）、ゼロボルトパルス（１４）と２回目のリレー接点検知（２０）のタイミング差Ｔｄｔ２（２１）をそれぞれ示している。 In the figure, the commercial AC power supply (13), the zero volt pulse (14), the timing from 0 to 14 (15) obtained by equally dividing the zero volt pulse (14), and the first relay drive (16 ), The first relay contact detection (17) in the second control device 9, the timing difference Tdt (18) between the zero volt pulse (14) and the first relay contact detection (17), 2 in the first control unit 5 The timing difference Tdt2 (21) between the second relay contact (19), the second relay contact detection (20) in the second controller 9 and the zero volt pulse (14) and the second relay contact detection (20) is shown. ing.
第１の制御装置４、第２の制御装置９とも商用交流電源１から絶縁されているが、第２の制御装置９上の負荷２はリレー接点３ａを閉じると商用交流電源１が通電されるので、第２の制御装置９は、商用交流電源１と通電する。 Both the first control device 4 and the second control device 9 are insulated from the commercial AC power supply 1, but the load 2 on the second control device 9 is energized when the relay contact 3a is closed. Therefore, the second control device 9 is energized with the commercial AC power supply 1.
この時、第１の制御装置４に負荷２の開閉を制御するタイマーなどの機能があるため、リレー接点３ａの駆動は第１の制御装置４で行う必要があり、かつ、第１の制御装置４を商用交流電源１から絶縁する必要がある場合、リレー３の駆動をゼロクロス付近で行うには、第２の制御装置９上のリレー接点検知手段１２で検知したリレーの接点情報を第１の制御手段４に知らせて、第１の制御手段４はこの情報を基にリレー３の駆動タイミングを修正しながらゼロクロス駆動を行わなくてはいけない。 At this time, since the first control device 4 has a function such as a timer for controlling the opening and closing of the load 2, the relay contact 3a needs to be driven by the first control device 4, and the first control device When it is necessary to insulate 4 from the commercial AC power source 1, in order to drive the relay 3 in the vicinity of the zero cross, the relay contact information detected by the relay contact detection means 12 on the second control device 9 is the first information. Notifying the control means 4, the first control means 4 must perform zero-cross drive while correcting the drive timing of the relay 3 based on this information.
しかし、第１の制御手段４と第２の制御装置９は絶縁のために通信手段８ａ、８ｂ間には絶縁素子が必要になる。この通信手段８ａ、８ｂを介してリレー接点３ａが閉または開した情報を送った場合、絶縁素子の遅れ時間分のズレが発生するので、リレー３の駆動はゼロクロス付近で行われない。そのため、以下に示す方法でリレー３の開閉タイミングを第１の制御部５に知らせる。 However, the first control means 4 and the second control device 9 require an insulating element between the communication means 8a and 8b for insulation. When information indicating that the relay contact 3a is closed or opened is sent via the communication means 8a and 8b, a deviation corresponding to the delay time of the insulating element occurs, so that the relay 3 is not driven near the zero cross. Therefore, the first control unit 5 is notified of the opening / closing timing of the relay 3 by the method described below.
第１の制御部５は、タイミング（１５）の０で、１回目のリレー駆動（１６）を行う。ここでリレー接点検知手段１２が１回目のリレー接点検知（１７）でリレー接点３ａをタイミング（１５）の１０の位置に検知すると、第２の制御部１０はゼロボルトパルス（１４）のタイミング（１５）の７との差異Ｔｄｔ（１８）＝３を検出する。Ｔｄｔ（１８）は通信手段８ａ、８ｂを介して、第２の制御部１０から第１の制御部５に送信され、第１の制御部５はタイミングの差異Ｔｄｔ（１８）の情報を得る。 The first control unit 5 performs the first relay drive (16) at 0 of the timing (15). Here, when the relay contact detection means 12 detects the relay contact 3a at the position 10 of the timing (15) in the first relay contact detection (17), the second control unit 10 detects the timing (15) of the zero volt pulse (14). ) 7 is detected as a difference Tdt (18) = 3. Tdt (18) is transmitted from the second control unit 10 to the first control unit 5 via the communication means 8a and 8b, and the first control unit 5 obtains information on the timing difference Tdt (18).
２回目のリレー駆動（１９）では、リレー駆動手段７は、１回目のリレー駆動（１６）よりＴｄｔ（１８）＝３だけ早いタイミング（１５）の１２でリレーの駆動を行う。すると、２回目のリレー接点検知（２０）のようにゼロボルトパルス（１４）とリレー接点検知（２０）のタイミングの差異Ｔｄｔ２（２１）はＴｄｔ（１８）より小さくなり、商用交流電源（１３）のゼロボルトに近づく。 In the second relay drive (19), the relay drive means 7 drives the relay at 12 of timing (15) that is Tdt (18) = 3 earlier than the first relay drive (16). Then, as in the second relay contact detection (20), the timing difference Tdt2 (21) between the zero volt pulse (14) and the relay contact detection (20) becomes smaller than Tdt (18), and the commercial AC power supply (13) Approaching zero volts.
以上のような方法で、リレー３のゼロクロス駆動を行うと、異なる制御部５、１０でリレー３の駆動と接点検知を行う場合に、制御部５、１０間の通信時間に影響を受けることなく、リレー３のゼロクロス駆動が可能となる。 When the relay 3 is zero-cross driven by the above method, when the relay 3 is driven and the contact detection is performed by the different control units 5 and 10, the communication time between the control units 5 and 10 is not affected. The zero cross drive of the relay 3 becomes possible.
（実施の形態２）
次に、本発明の実施の形態２におけるリレー駆動装置について説明する。リレー駆動装置の構成は実施の形態１と同様であるのでその説明を省略する。
(Embodiment 2)
Next, the relay drive apparatus in Embodiment 2 of this invention is demonstrated. Since the configuration of the relay drive device is the same as that of the first embodiment, the description thereof is omitted.
本実施の形態におけるリレー駆動装置は、第１の制御部５は、第２の制御部１０からのタイミング情報と所定のしきい値ｔｌｉｍｉｔとの比較に基づいて次のリレー駆動開始信号またはリレー駆動停止信号出力のタイミングを調整するようにしたものである。 In the relay drive apparatus according to the present embodiment, the first control unit 5 determines whether the next relay drive start signal or relay drive is based on the comparison between the timing information from the second control unit 10 and a predetermined threshold value tlimit. The stop signal output timing is adjusted.
具体例を示すと、第１の制御部５は、図２のタイミング（１５）の０で、１回目のリレー駆動（１６）を行う。リレー接点検知手段１２が１回目のリレー接点検知（１７）でリレー接点３ａを検知すると、第２の制御部１０はタイミング（１５）の７、または０からの差異Ｔｄｔ（１８）を検出し、第１の制御部５に送る。 As a specific example, the first control unit 5 performs the first relay drive (16) at 0 of the timing (15) in FIG. When the relay contact detection means 12 detects the relay contact 3a in the first relay contact detection (17), the second control unit 10 detects the difference Tdt (18) from 7 or 0 of the timing (15), The data is sent to the first control unit 5.
第１の制御部５は受け取ったＴｄｔ（１８）が所定のしきい値ｔｌｉｍｉｔより小さければ、２回目のリレー駆動（１９）は、１回目のリレー駆動（１６）と同じタイミングで行う。しかし、Ｔｄｔ（１８）が所定のしきい値ｔｌｉｍｉｔより大きければ、２回目のリレー駆動（１９）は、１回目のリレー駆動（１６）よりＴｔｄ（１８）だけ早いタイミングでリレー３の駆動を行うものである。 If the received Tdt (18) is smaller than the predetermined threshold tlimit, the first controller 5 performs the second relay drive (19) at the same timing as the first relay drive (16). However, if Tdt (18) is larger than the predetermined threshold value tlimit, the second relay drive (19) drives the relay 3 at a timing earlier by Ttd (18) than the first relay drive (16). Is.
以上のような方法で、リレー３のゼロクロス駆動を行うと、異なる制御部５、１０でリレー３の駆動と接点検知を行う場合に、制御部間の通信時間に影響を受けることなく、リレー３のゼロクロス駆動が可能となる。 When the relay 3 is zero-cross driven by the above-described method, the relay 3 is not affected by the communication time between the control units when the relays 3 are driven and contact detection is performed by the different control units 5 and 10. Zero cross drive is possible.
（実施の形態３）
図３、図４は、本発明の実施の形態３におけるリレー駆動装置を示している。実施の形態１と同一要素については同一符号を付してその説明を省略する。
(Embodiment 3)
3 and 4 show a relay drive apparatus according to Embodiment 3 of the present invention. The same elements as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
図３に示すように、本実施の形態におけるリレー駆動装置は、第２の制御装置９に、商用交流電源１の電圧を検知する電圧検知手段２２を備え、電圧検知手段２２の検知結果が予め定めた所定のしきい値を超えたタイミングをとらえ、そのタイミングが商用交流電源１の１周期中の予め決められた複数のタイミング中どのタイミングであるかの情報に基づいて、次にリレー駆動開始信号またはリレー駆動停止信号を出力するタイミングを調整するようにしたものである。 As shown in FIG. 3, the relay drive device according to the present embodiment is provided with a voltage detection unit 22 that detects the voltage of the commercial AC power supply 1 in the second control device 9, and the detection result of the voltage detection unit 22 is obtained in advance. The timing at which a predetermined threshold value is exceeded is captured, and the relay drive is started next based on information on which timing is a predetermined timing among a plurality of predetermined timings in one cycle of the commercial AC power supply 1. The timing for outputting the signal or the relay drive stop signal is adjusted.
図４には、リレー接点検知手段１２が接点検知した時点で、電圧検知手段２２で検知した１回目の検知電圧Ｖ０（２３）、２回目のリレー接点検知（２０）時の電圧検知手段２２で検知した２回目の検知電圧Ｖ２（２４）をそれぞれ示している。 FIG. 4 shows the detection voltage V0 (23) detected by the voltage detection means 22 when the relay contact detection means 12 detects the contact, and the voltage detection means 22 at the second relay contact detection (20). The detected second detection voltage V2 (24) is shown.
第１の制御部５は、タイミング（１５）の０で、１回目のリレー駆動（１６）を行う。リレー接点検知手段１２が１回目のリレー接点検知（１７）でリレー接点３ａを検知すると、電圧検知手段２２は商用交流電源１の電圧を検知する。検知電圧Ｖ０（２３）がしきい値を超えた場合は、タイミング（１５）の７との差異Ｔｄｔ（１８）＝３を検出して、第１の制御部５へ通信手段８ａ、８ｂを介して送る。第１の制御部５は２回目のリレー駆動を１回目のリレー駆動よりＴｄｔ（１８）だけ早いタイミングで行う。すると、２回目のリレー接点検知（２０）の検知電圧Ｖ２（２４）のように、商用交流電源（１３）のゼロボルト付近でリレー駆動が行われる。 The first control unit 5 performs the first relay drive (16) at 0 of the timing (15). When the relay contact detection means 12 detects the relay contact 3a in the first relay contact detection (17), the voltage detection means 22 detects the voltage of the commercial AC power supply 1. When the detection voltage V0 (23) exceeds the threshold value, a difference Tdt (18) = 3 from 7 of the timing (15) is detected, and the first control unit 5 is communicated with the communication means 8a and 8b. Send. The first control unit 5 performs the second relay drive at a timing earlier by Tdt (18) than the first relay drive. Then, the relay drive is performed in the vicinity of zero volts of the commercial AC power supply (13) like the detection voltage V2 (24) of the second relay contact detection (20).
以上のような、ゼロクロス駆動を行うと、異なる制御部でリレー３の駆動と接点検知を行う場合に、制御部間の通信時間に影響を受けることなく、リレー３のゼロクロス駆動が可能となる。 When the zero-cross drive is performed as described above, the relay 3 can be driven zero-zero without being affected by the communication time between the control units when the relay 3 is driven and contact detection is performed by different control units.
（実施の形態４）
図５、図６は、本発明の実施の形態４におけるリレー駆動装置を示している。実施の形態１と同一要素については同一符号を付してその説明を省略する。
(Embodiment 4)
5 and 6 show a relay drive apparatus according to Embodiment 4 of the present invention. The same elements as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
図５に示すように、本実施の形態におけるリレー駆動装置は、第２の制御装置９に、商用交流電源１の電流を検知する電流検知手段２５を備え、電流検知手段２５の検知結果が予め定めた所定のしきい値を超えたタイミングをとらえ、そのタイミングが商用交流電源１の１周期中の予め決められた複数のタイミング中どのタイミングであるかの情報に基づいて、次にリレー駆動開始信号またはリレー駆動停止信号を出力するタイミングを調整するようにしたものである。 As shown in FIG. 5, the relay drive device according to the present embodiment includes a current detection unit 25 that detects the current of the commercial AC power supply 1 in the second control device 9, and the detection result of the current detection unit 25 is obtained in advance. The timing at which a predetermined threshold value is exceeded is captured, and the relay drive is started next based on information on which timing is a predetermined timing among a plurality of predetermined timings in one cycle of the commercial AC power supply 1. The timing for outputting the signal or the relay drive stop signal is adjusted.
図６には、電流検知手段２５の検知した検知電流（２７）、リレー接点検知手段１２が接点検知した時点で、電流検知手段２５で検知した電流値Ｉ０（２８）、２回目のリレー接点検知（２０）時の電流検知手段２５で検知した電流値Ｉ２（２９）をそれぞれ示している。 FIG. 6 shows the detected current (27) detected by the current detecting means 25, the current value I0 (28) detected by the current detecting means 25 when the relay contact detecting means 12 detects the contact, and the second relay contact detection. The current value I2 (29) detected by the current detection means 25 at (20) is shown.
第１の制御部５は、タイミング（１５）の０で、１回目のリレー駆動（１６）を行う。リレー接点検知手段１２が１回目のリレー接点検知（１７）でリレー接点３ａを検知すると、電流検知手段２５は商用交流電源１の電流値を検知する。検知電流Ｉ０（２８）がしきい値を超えた場合は、タイミング（１５）の７との差異Ｔｄｔ（１８）＝３を検出して、第１の制御部５へ通信手段８ａ、８ｂを介して送る。第１の制御部５は２回目のリレー駆動（１９）を１回目のリレー駆動（１６）よりＴｄｔ（１８）だけ早いタイミングで行う。すると、２回目のリレー接点検知（２０）の電流値Ｉ２（２９）のように、電流値の低いタイミングでリレー駆動が行われる。 The first control unit 5 performs the first relay drive (16) at 0 of the timing (15). When the relay contact detection means 12 detects the relay contact 3a in the first relay contact detection (17), the current detection means 25 detects the current value of the commercial AC power supply 1. When the detected current I0 (28) exceeds the threshold value, a difference Tdt (18) = 3 from 7 of the timing (15) is detected, and the first control unit 5 is communicated with the communication means 8a and 8b. Send. The first control unit 5 performs the second relay drive (19) at a timing earlier by Tdt (18) than the first relay drive (16). Then, the relay drive is performed at a timing when the current value is low, like the current value I2 (29) of the second relay contact detection (20).
以上のような、ゼロクロス駆動を行うと、異なる制御部でリレー３の駆動と接点検知を行う場合に、制御部間の通信時間に影響を受けることなく、リレー駆動時の突入電流を低減することが可能となる。 When the zero-cross drive as described above is performed, the inrush current at the time of relay drive can be reduced without being affected by the communication time between the control units when the relay 3 is driven and contact detection is performed by different control units. Is possible.
なお、本実施の形態に限らず、各実施の形態１〜３にも採用できるが、次にリレー駆動開始信号またはリレー駆動停止信号を出力するタイミングを調整した回数が、連続して所定のしきい値を越えると、リレー３の駆動を禁止するようにしている。これにより、リレー３の開閉が耐久回数を超えたなどの理由で、リレー駆動がゼロクロス付近で行われなくなってきた場合は、リレー駆動を禁止して安全を確保している。さらに、リレー３の駆動を禁止したことを音、音声、文字、光、あるいはこれらの組み合わせなどで報知する報知手段２６を備えているものであり、安全のためにリレー駆動を禁止したことをユーザに伝えるようにしている。また、各実施の形態では、第１、第２の制御装置について説明したが、それ以上の制御装置を用いたものであっても構わない。 Although not limited to the present embodiment, it can be applied to each of the first to third embodiments. However, the number of times of adjusting the timing for outputting the relay drive start signal or the relay drive stop signal next is predetermined. When the threshold value is exceeded, the driving of the relay 3 is prohibited. As a result, when the relay drive is no longer performed near the zero cross because the opening and closing of the relay 3 has exceeded the endurance number, the relay drive is prohibited to ensure safety. Furthermore, it is provided with notifying means 26 for notifying that the driving of the relay 3 is prohibited by sound, voice, text, light, or a combination thereof, and the user prohibits the relay driving for safety. I am trying to tell you. In each embodiment, although the 1st and 2nd control device was explained, it may be one using more control devices.
以上のように、本発明にかかるリレー駆動装置は、異なる制御部でリレーの駆動と接点検知を行う場合でも、商用交流電源のゼロクロス付近でリレー駆動することができるので、誘導加熱調理器をはじめ各種の機器に適用することができる。 As described above, the relay drive device according to the present invention can perform relay drive in the vicinity of the zero cross of the commercial AC power supply even when the relay drive and contact detection are performed by different control units. It can be applied to various devices.
１ 商用交流電源
２ 負荷
３ リレー
３ａ リレー接点
４ 第１の制御装置
５ 第１の制御部
６ 第１の電源同期発生手段
７ リレー駆動手段
８ａ、８ｂ 通信手段
９ 第２の制御装置
１０ 第２の制御部
１１ 第２の電源同期発生手段
１２ リレー接点検知手段
２２ 電圧検知手段
２５ 電流検知手段
２６ 報知手段
DESCRIPTION OF SYMBOLS 1 Commercial AC power supply 2 Load 3 Relay 3a Relay contact 4 1st control apparatus 5 1st control part 6 1st power supply synchronous generation means 7 Relay drive means 8a, 8b Communication means 9 2nd control apparatus 10 2nd Control unit 11 Second power supply synchronization generation means 12 Relay contact detection means 22 Voltage detection means 25 Current detection means 26 Notification means
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| CN110696584A (en) * | 2018-12-29 | 2020-01-17 | 长城汽车股份有限公司 | HVH driving method of electric vehicle, vehicle-mounted air conditioner controller and vehicle control unit |
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| JPH02215019A (en) * | 1989-02-15 | 1990-08-28 | Sharp Corp | Relay control apparatus |
| JPH05217477A (en) * | 1992-02-06 | 1993-08-27 | Toshiba Lighting & Technol Corp | Relay controlling apparatus |
| JPH08171843A (en) * | 1994-12-19 | 1996-07-02 | Funai Techno Syst Kk | Relay controlling circuit |
| JPH10241485A (en) * | 1997-02-28 | 1998-09-11 | Nec Home Electron Ltd | Zero crossing closing power supply device |
| JPH10312725A (en) * | 1997-05-12 | 1998-11-24 | Sony Corp | Zero crossing switch |
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