JP2001267975A - Connection structure for communication line in refrigeration and cooling system - Google Patents
Connection structure for communication line in refrigeration and cooling systemInfo
- Publication number
- JP2001267975A JP2001267975A JP2000077716A JP2000077716A JP2001267975A JP 2001267975 A JP2001267975 A JP 2001267975A JP 2000077716 A JP2000077716 A JP 2000077716A JP 2000077716 A JP2000077716 A JP 2000077716A JP 2001267975 A JP2001267975 A JP 2001267975A
- Authority
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- Japan
- Prior art keywords
- management device
- terminal
- transmission
- terminal management
- port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、冷凍冷却システム
における通信線の接続構造に関する。The present invention relates to a communication line connection structure in a refrigeration / cooling system.
【０００２】[0002]
【従来の技術】通常、スーパーマーケットやコンビニエ
ンスストアなどの店舗では、オープンショーケースや冷
凍機などの冷凍冷却装置を多数台設置しているが、これ
らを効率良く管理する手段として、例えば特開平８−１
２１９２７号公報に示すごとく各冷凍冷却装置の温度管
理や除霜時間などを１台の主制御装置で管理する冷凍冷
却システムが知られている。2. Description of the Related Art Usually, in stores such as supermarkets and convenience stores, a large number of refrigeration and cooling devices such as open showcases and refrigerators are installed. 1
As disclosed in Japanese Patent No. 21927, there is known a refrigeration / cooling system in which the temperature control and the defrosting time of each refrigeration / cooling device are managed by one main controller.
【０００３】前記公報に記載のものでは、各冷凍冷却装
置に接続した端末側制御装置を所定台数毎にまとめて１
台の系統制御装置に接続し、また各系統制御装置を主制
御装置に接続することで、主制御装置と各系統制御装置
とが通信するとともに、系統制御装置と各端末側制御装
置とが通信するようにしてある。つまり、主制御装置の
送受信手段と各系統制御装置の送受信手段との間、およ
び系統制御装置の送受信手段と各端末側制御装置の送受
信手段との間は、ＥＩＡ規格ＲＳ−２３２Ｃなどのシリ
アルインターフェイスの通信線を使って接続してある。
このシリアルインターフェイスでは、ツイスト・ペアな
どの通信線で各系統制御装置や各端末側制御装置の送受
信手段を直列接続することになるため、接続に必要な通
信線の本数を減らせて配線作業などの軽減を図れる。In the above-mentioned publication, the terminal-side control devices connected to each refrigeration / cooling device are grouped into a predetermined number of one-time control devices.
By connecting each system controller to the main system controller and connecting each system controller to the main controller, the main controller and each system controller communicate with each other, and the system controller and each terminal controller communicate with each other. I have to do it. That is, a serial interface such as EIA standard RS-232C is used between the transmission / reception means of the main control device and the transmission / reception means of each system control device and between the transmission / reception means of the system control device and the transmission / reception means of each terminal-side control device. Connected using the communication line.
In this serial interface, the transmission / reception means of each system control device and each terminal-side control device are connected in series with communication lines such as twisted pairs, so the number of communication lines required for connection can be reduced and wiring work etc. The reduction can be achieved.
【０００４】[0004]
【発明が解決しようとする課題】スーパーマーケットな
どの店舗では、食料品売場などのフロアの周壁に沿って
縦型オープンショーケースなどを複数台並べてあるが、
店舗のレイアウトの変更などに伴ってフロアの中央付近
などに、例えば平型オープンショーケースを新たに複数
台追加することがある。この場合、前述のシリアルイン
ターフェイスでは、平型オープンショーケースの端末側
制御装置を縦型オープンショーケースの端末側制御装置
に並列接続することができないため、縦型オープンショ
ーケースの端末側制御装置の直列回路の終端に位置する
端末側制御装置から平型オープンショーケースの端末側
制御装置まで通信線を延ばして直列接続することにな
る。In a store such as a supermarket, a plurality of vertical open showcases are arranged along a peripheral wall of a floor such as a grocery store.
For example, a plurality of flat open showcases may be newly added near the center of the floor due to a change in store layout or the like. In this case, in the serial interface described above, the terminal control device of the flat open showcase cannot be connected in parallel to the terminal control device of the vertical open showcase. The communication line extends from the terminal-side control device located at the end of the series circuit to the terminal-side control device of the flat open showcase, and is connected in series.
【０００５】従って、前記直列回路の終端に位置する縦
型オープンショーケースの端末側制御装置から平型オー
プンショーケースまでが大きく離れていると、通信線が
極めて長くなって配線作業に手間がかかるうえ通信線の
コストが大きくなる。また、前記直列回路の終端に位置
する縦型オープンショーケースの端末側制御装置に、平
型オープンショーケースの端末側制御装置を接続する場
合には、終端抵抗を平型オープンショーケースの端末側
制御装置に接続し直さなければならないが、終端抵抗の
接続忘れを生じるおそれがある。Therefore, if the terminal control device of the vertical open showcase located at the end of the series circuit is far away from the flat open showcase, the communication line becomes extremely long and the wiring work is troublesome. Furthermore, the cost of the communication line increases. Further, when the terminal control device of the flat open showcase is connected to the terminal control device of the vertical open showcase located at the end of the series circuit, the terminal resistance is set to the terminal side of the flat open showcase. Although it is necessary to reconnect to the control device, there is a possibility that the connection of the terminating resistor may be forgotten.
【０００６】本発明の目的は、冷凍冷却装置を新たに追
加する場合において、通信線を短くできて配線作業の手
間を軽減でき、通信線のコストも低減できる冷凍冷却シ
ステムにおける通信線の接続構造を提供することにあ
る。本発明の目的は、終端抵抗の接続忘れを防止するこ
とにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a refrigeration / cooling system for connecting a communication line in a refrigeration / cooling system in which a communication line can be shortened, wiring work can be reduced, and the cost of the communication line can be reduced when a refrigeration cooling device is newly added. Is to provide. An object of the present invention is to prevent forgetting to connect a terminating resistor.
【０００７】[0007]
【課題を解決するための手段】本発明は、図１に示すご
とく主管理装置２に設けた送受信ポート３と、複数台の
冷凍冷却装置６にそれぞれ接続した端末管理装置５に設
けた送受信ポート３とが直列接続されており、主管理装
置２と各端末管理装置５とが送受信ポート３を介して通
信することで、主管理装置２が各端末管理装置５を介し
て冷凍冷却装置６を管理する冷凍冷却システムにおい
て、前記直列接続された管理装置２・５のうち、２つの
管理装置５・５の送受信ポート３の間に、複数台の冷凍
冷却装置６にそれぞれ接続した端末管理装置４０を追加
的に直列接続して、主管理装置２と各追加端末管理装置
４０とを送受信ポート３を介して通信可能にする場合が
対象になる。ここでの通信には、ＥＩＡ規格ＲＳ−２３
２ＣやＲＳ−４８５などのシリアルインターフェイスが
適用される。接続は、ツイスト・ペアや同軸線などで行
われる。According to the present invention, as shown in FIG. 1, a transmission / reception port 3 provided in a main management device 2 and a transmission / reception port provided in a terminal management device 5 connected to a plurality of refrigeration and cooling devices 6, respectively. 3 are connected in series, and the main management device 2 and each terminal management device 5 communicate with each other via the transmission / reception port 3 so that the main management device 2 controls the refrigeration / cooling device 6 via each terminal management device 5. In the refrigeration / cooling system to be managed, the terminal management device 40 connected to the plurality of refrigeration / cooling devices 6 between the transmission / reception ports 3 of the two management devices 5/5 among the management devices 2/5 connected in series. Are additionally connected in series to enable communication between the main management device 2 and each of the additional terminal management devices 40 via the transmission / reception port 3. In this communication, EIA standard RS-23
A serial interface such as 2C or RS-485 is applied. The connection is made by a twisted pair, a coaxial cable, or the like.
【０００８】本発明の冷凍冷却システムの通信線の接続
構造では、各追加端末管理装置４０は中継ポート４を備
えている。そして、各追加端末管理装置４０の送受信ポ
ート３どうしおよび中継ポート４どうしを通信線１でそ
れぞれ直列接続するとともに、この直列回路の終端に位
置する追加端末管理装置４０の送受信ポート３と中継ポ
ート４とを互いに接続し、前記直列回路の基端に位置す
る追加端末管理装置４０の送受信ポート３と中継ポート
４とを、前記２つの管理装置５・５の送受信ポート３に
それぞれ接続している。追加端末管理装置４０が接続さ
れる２つの管理装置５・５は、主管理装置２と端末管理
装置５との場合と、２つの端末管理装置５・５の場合と
が含まれる。In the communication line connection structure of the refrigeration / cooling system of the present invention, each additional terminal management device 40 has a relay port 4. The transmission / reception port 3 and the relay port 4 of each additional terminal management device 40 are connected in series by the communication line 1, respectively, and the transmission / reception port 3 and the relay port 4 of the additional terminal management device 40 located at the end of the series circuit are connected. Are connected to each other, and the transmission / reception port 3 and the relay port 4 of the additional terminal management device 40 located at the base end of the series circuit are connected to the transmission / reception port 3 of the two management devices 5.5. The two management devices 5.5 to which the additional terminal management device 40 is connected include the case of the main management device 2 and the terminal management device 5 and the case of the two terminal management devices 5.5.
【０００９】また、前記直列接続された２つの管理装置
５・５の送受信ポート３が中継用端子部８を介して直列
接続されており、中継用端子部８は、前記２つの管理装
置５・５の送受信ポート３にそれぞれ接続してある第１
の端子１１と第２の端子１２とを備えるとともに、前記
直列回路の基端に位置する追加端末管理装置４０の送受
信ポート３と中継ポート４とにそれぞれ接続するための
第３の端子１３と第４の端子１４とを備えており、第１
の端子１１と第３の端子１３とを接続するとともに、第
２の端子１２と第４の端子１４とを接続した状態で、直
列回路の基端に位置する追加端末管理装置４０の送受信
ポート３と中継ポート４とを第３の端子１３と第４の端
子１４とにそれぞれ接続することにより、前記２つの管
理装置５・５の送受信ポート３の間に追加端末管理装置
４０の直列回路が直列接続されるものとすることができ
る。中継用端子部８は、主管理装置２と端末管理装置５
との間や、各端末管理装置５の間のいずれか１つあるい
は複数箇所に設けてもよく、あるいはこれらの間の全て
に設けてもよい。The transmission / reception ports 3 of the two management devices 5 connected in series are connected in series via a relay terminal portion 8. The relay terminal portion 8 is connected to the two management devices 5 and 5. 5 connected to the transmission / reception ports 3 of the first
And a third terminal 13 for connecting to the transmission / reception port 3 and the relay port 4 of the additional terminal management device 40 located at the base end of the series circuit, respectively. 4 terminals 14 and the first
The terminal 11 and the third terminal 13 are connected, and the second terminal 12 and the fourth terminal 14 are connected, and the transmission / reception port 3 of the additional terminal management device 40 located at the base end of the series circuit is connected. And the relay port 4 are connected to the third terminal 13 and the fourth terminal 14, respectively, so that the series circuit of the additional terminal management device 40 is connected in series between the transmission / reception ports 3 of the two management devices 5.5. Can be connected. The relay terminal unit 8 includes the main management device 2 and the terminal management device 5.
May be provided at any one or a plurality of locations between the terminal management devices 5, or may be provided at all locations therebetween.
【００１０】主管理装置２および各端末管理装置５が中
継ポート４を備えており、主管理装置２および各端末管
理装置５の送受信ポート３どうしおよび中継ポート４ど
うしを通信線１でそれぞれ直列接続するとともに、この
直列回路の終端に位置する端末管理装置５の送受信ポー
ト３と中継ポート４とを互いに接続する。このうえで、
前記直列回路の基端に位置する主管理装置２の中継ポー
ト４に終端抵抗７を接続したものとすることができる。
また、通信線１は心線４本のケーブルであるものとする
ことができる。The main management device 2 and each terminal management device 5 have a relay port 4, and the transmission / reception port 3 and the relay port 4 of the main management device 2 and each terminal management device 5 are connected in series with the communication line 1 respectively. At the same time, the transmission / reception port 3 and the relay port 4 of the terminal management device 5 located at the end of the series circuit are connected to each other. On this,
A termination resistor 7 may be connected to the relay port 4 of the main management device 2 located at the base end of the series circuit.
Further, the communication line 1 may be a four-core cable.
【００１１】[0011]
【作用】本発明にかかる冷凍冷却システムの通信線の接
続構造を図１に基づき具体的に説明すると、直列接続さ
れた主管理装置２と各端末管理装置５とのうち、選択し
た２つの管理装置５・５の送受信ポート３の間に、複数
台の端末管理装置４０を新たに追加に接続する場合に
は、前記２つの管理装置５・５の送受信ポート３の間の
接続を外す。そして、各追加端末管理装置４０の送受信
ポート３どうしおよび中継ポート４どうしを通信線１で
それぞれ直列接続するとともに、この直列回路の終端に
位置する追加端末管理装置４０の送受信ポート３と中継
ポート４とを互いに接続し、この追加端末管理装置４０
の直列回路の基端に位置する追加端末管理装置４０の送
受信ポート３と中継ポート４とを前記２つの管理装置５
・５の送受信ポート３にそれぞれ接続することになる。
これにより、管理装置２・５の直列回路の途中に複数台
の追加端末管理装置４０が直列接続される。The connection structure of the communication line of the refrigeration / cooling system according to the present invention will be described in detail with reference to FIG. 1. Two main management devices selected from the main management device 2 and the terminal management devices 5 connected in series are selected. When a plurality of terminal management devices 40 are additionally connected between the transmission / reception ports 3 of the devices 5.5, the connection between the transmission / reception ports 3 of the two management devices 5.5 is disconnected. The transmission / reception port 3 and the relay port 4 of each additional terminal management device 40 are connected in series by the communication line 1, respectively, and the transmission / reception port 3 and the relay port 4 of the additional terminal management device 40 located at the end of the series circuit are connected. Are connected to each other, and this additional terminal management device 40
The transmission / reception port 3 and the relay port 4 of the additional terminal management device 40 located at the base end of the series circuit of
・ They will be connected to 5 transmission / reception ports 3 respectively.
Thus, a plurality of additional terminal management devices 40 are connected in series in the series circuit of the management devices 2 and 5.
【００１２】[0012]
【発明の効果】本発明の冷凍冷却システムの通信線の接
続構造によれば、複数台の冷凍冷却装置６を新たに追加
する場合には、追加しようとする冷凍冷却装置６の追加
端末管理装置４０に近い２つの端末管理装置５・５間の
接続を外し、追加端末管理装置４０の直列回路の基端に
位置する追加端末管理装置４０の送受信ポート３と中継
ポート４とを、前記２つの端末管理装置５・５の送受信
ポート３にそれぞれ接続するだけで、管理装置２・５の
直列回路の途中に複数台の追加端末管理装置４０を直列
接続することができる。従って、シリアルインターフェ
イスを使って通信できながら、管理装置２・５の直列回
路の終端に位置する端末管理装置５から追加端末管理装
置４０まで通信線１を延ばさなくても済み、この分だけ
通信線１を短くできて、配線作業の手間を軽減できると
ともに通信線１のコストを軽減できる。According to the connection structure of the communication line of the refrigeration / cooling system of the present invention, when a plurality of refrigeration / cooling devices 6 are newly added, an additional terminal management device for the refrigeration / cooling device 6 to be added. The connection between the two terminal management devices 5 close to 40 is disconnected, and the transmission / reception port 3 and the relay port 4 of the additional terminal management device 40 located at the base end of the series circuit of the additional terminal management device 40 are connected to the two terminals. By simply connecting to the transmission / reception ports 3 of the terminal management devices 5.5, a plurality of additional terminal management devices 40 can be connected in series in the series circuit of the management devices 2.5. Therefore, it is not necessary to extend the communication line 1 from the terminal management device 5 located at the end of the series circuit of the management devices 2 and 5 to the additional terminal management device 40 while communication can be performed using the serial interface. 1 can be shortened, wiring work can be reduced, and the cost of the communication line 1 can be reduced.
【００１３】直列接続された２つの管理装置５・５の送
受信ポート３間に中継用端子部８を配している場合に
は、追加端末管理装置４０を接続するために管理装置５
・５間の通信線１を切断しなくても済むうえ、追加端末
管理装置４０を中継用端子部８の端子に接続するといっ
た簡単な作業で、複数台の追加端末管理装置４０を管理
装置５・５間に割り込ませて直列接続することができ
る。When the relay terminal 8 is arranged between the transmission / reception ports 3 of the two management devices 5 connected in series, the management device 5 is connected to connect the additional terminal management device 40.
It is not necessary to disconnect the communication line 1 between the five terminals, and the plurality of additional terminal management devices 40 can be connected to the management device 5 by a simple operation such as connecting the additional terminal management device 40 to the terminal of the relay terminal unit 8.・ Can be connected in series by interrupting between 5 points.
【００１４】主管理装置２および各端末管理装置５の送
受信ポート３どうしおよび中継ポート４どうしを通信線
１でそれぞれ直列接続するとともに、この直列回路の終
端に位置する端末管理装置５の送受信ポート３と中継ポ
ート４とを互いに接続した場合には、主管理装置２の送
受信ポート３を起点に、この主管理装置２の中継ポート
４が終点となるループ状の回路になるため、主管理装置
２の中継ポート４に終端抵抗７を接続することができ
る。そして、前述のように追加端末管理装置４０を新た
に追加しても、前記ループ状の回路の途中に複数台の追
加端末管理装置４０が割り込むだけで、主管理装置２の
中継ポート４が常に終点となる。従って、終端抵抗７を
他の端末管理装置５や追加端末管理装置４０に付け替え
る必要がなく、終端抵抗７の接続忘れがない。通信線１
が心線４本のケーブルであると、装置２・５・４０間お
よびこれらと中継用端子部８との接続がそれぞれひとつ
のケーブルで接続できて、配線作業の手間をより軽減で
きる。The transmission / reception ports 3 and the relay ports 4 of the main management device 2 and each terminal management device 5 are connected in series with each other via the communication line 1, and the transmission / reception port 3 of the terminal management device 5 located at the end of the series circuit is connected. And the relay port 4 are connected to each other, the transmission / reception port 3 of the main management device 2 is used as a starting point, so that the relay port 4 of the main management device 2 becomes a loop-shaped circuit that is the end point. The terminating resistor 7 can be connected to the relay port 4 of the. As described above, even if the additional terminal management device 40 is newly added, the relay port 4 of the main management device 2 is always set only by interrupting the plurality of additional terminal management devices 40 in the middle of the loop circuit. It will be the end point. Therefore, it is not necessary to replace the terminating resistor 7 with another terminal management device 5 or the additional terminal management device 40, and there is no forgetting to connect the terminating resistor 7. Communication line 1
Is a four-core cable, the connection between the devices 2, 5, and 40 and the connection with the relay terminal 8 can be made by one cable, respectively, and the labor of the wiring work can be further reduced.
【００１５】[0015]
【発明の実施の形態】（第１実施例）図２は本発明に係
る冷凍冷却システムの通信線の接続構造を例示してお
り、１台の主管理装置２と、複数台の端末管理装置５と
を備えている。各端末管理装置５は、スーパーマーケッ
トやコンビニエンスストアなどの店舗に配設されるオー
プンショーケースや冷凍機などの冷凍冷却装置６に設け
てあり、主管理装置２は店舗の機械室や事務所などに配
置される。主管理装置２と各端末管理装置５とは、例え
ばＥＩＡ規格ＲＳ−４８５のシリアルインターフェイス
の通信線１を使って接続してある。ここでの冷凍冷却装
置６には、スーパーマーケットやコンビニエンスストア
などの店舗で使用される縦型および平型オープンショー
ケース、冷凍機、プレハブ冷凍冷蔵庫、業務用冷蔵庫お
よび業務用冷凍庫などが含まれる。DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIG. 2 exemplifies a connection structure of communication lines of a refrigeration / cooling system according to the present invention, wherein one main management device 2 and a plurality of terminal management devices are provided. 5 is provided. Each terminal management device 5 is provided in a refrigeration / cooling device 6 such as an open showcase or a refrigerator disposed in a store such as a supermarket or a convenience store, and the main management device 2 is provided in a machine room or an office of the store. Be placed. The main management device 2 and each terminal management device 5 are connected using, for example, a communication line 1 of a serial interface of EIA standard RS-485. The refrigeration and cooling device 6 here includes a vertical and flat open showcase, a refrigerator, a prefabricated refrigerator, a commercial refrigerator, a commercial refrigerator, and the like used in stores such as supermarkets and convenience stores.
【００１６】主管理装置２は、図３に示すごとくマイク
ロコンピュータなどからなる制御部２０と、各冷凍冷却
装置６の設定温度や霜取り時間などを記憶するＲＡＭお
よび主管理装置２自体の制御プログラムなどを記憶する
ＲＯＭなどからなる記憶部２１と、小型の液晶表示部２
２と、テンキー２３と、送受信部２４などを備えてお
り、テンキー２３などで設定された設定温度や霜取り時
間などの各冷凍冷却装置６の運転条件のデータを、送受
信部２４の送受信ポート３を介して各端末管理装置５へ
送信する。また、主管理装置２は、各端末管理装置５か
らの冷凍冷却装置６の温度データやコンプレッサの圧力
データなどの各種のデータを、送受信部２４の送受信ポ
ート３を介して受信する。As shown in FIG. 3, the main management unit 2 includes a control unit 20 composed of a microcomputer and the like, a RAM for storing the set temperature and defrost time of each refrigeration / cooling device 6, a control program for the main management unit 2 itself, and the like. And a small-sized liquid crystal display 2
2, a numeric keypad 23, a transmitting / receiving unit 24, and the like. Operating condition data of each refrigeration cooling device 6 such as a set temperature and a defrosting time set by the numeric keypad 23 and the like are transmitted to the transmitting / receiving port 3 It is transmitted to each terminal management device 5 via the terminal. Further, the main management device 2 receives various data such as the temperature data of the refrigerating / cooling device 6 and the pressure data of the compressor from each terminal management device 5 through the transmission / reception port 3 of the transmission / reception unit 24.
【００１７】端末管理装置５は、図４に示すごとくマイ
クロコンピュータなどからなる制御部３２と、主管理装
置２から指示された運転条件のデータなどを記憶するＲ
ＡＭおよび端末管理装置５自体の制御プログラムなどを
記憶するＲＯＭなどからなる記憶部３３と、ショーケー
スの庫内温度を検出する温度センサや冷凍機の圧力を検
出する圧力センサなどの各種のセンサ３４と、冷凍冷却
装置６が異常の際に警報を発する警報出力部３５と、送
受信部３６などを備えており、前記冷凍冷却装置６の運
転条件のデータを、送受信部３６の送受信ポート３を介
して受信することで、この運転条件のデータの内容に合
わせて冷凍冷却装置６を制御する。また、端末管理装置
５は、前記冷凍冷却装置６の各種のデータを、送受信部
３６の送受信ポート３を介して主管理装置２へ送信す
る。つまり、各装置２・５の送受信ポート３どうしが通
信線１によって直列接続される。また、この直列回路の
両端に位置する主管理装置２および端末管理装置５には
終端抵抗７がそれぞれ接続される。As shown in FIG. 4, the terminal management device 5 has a control unit 32 composed of a microcomputer or the like, and an R for storing data on operating conditions specified by the main management device 2.
A storage unit 33 composed of a ROM or the like for storing a control program of the AM and the terminal management device 5 itself, and various sensors 34 such as a temperature sensor for detecting the inside temperature of the showcase and a pressure sensor for detecting the pressure of the refrigerator. And an alarm output unit 35 that issues an alarm when the refrigeration / cooling device 6 is abnormal, a transmission / reception unit 36, and the like. The data on the operating conditions of the refrigeration / cooling device 6 is transmitted via the transmission / reception port 3 of the transmission / reception unit 36. The refrigeration / cooling device 6 is controlled in accordance with the data of the operating conditions. Further, the terminal management device 5 transmits various data of the refrigeration / cooling device 6 to the main management device 2 via the transmission / reception port 3 of the transmission / reception unit 36. That is, the transmission / reception ports 3 of the devices 2 and 5 are connected in series by the communication line 1. In addition, terminal resistors 7 are respectively connected to the main management device 2 and the terminal management device 5 located at both ends of the series circuit.
【００１８】これらの端末管理装置５のうち、２つの端
末管理装置５・５（図１中では上側の２つ）は中継用端
子部８を介して直列接続されており、この中継用端子部
８に、追加する複数台の冷凍冷却装置４１に接続された
端末管理装置４０の直列回路を接続可能にしてある。各
追加端末管理装置４０は、端末管理装置５と同様に制御
部３２と記憶部３３とセンサ３４と警報出力部３５と送
受信部３６と送受信ポート３などを備えており、さらに
中継ポート４を備えている。中継用端子部８は、端末管
理装置５・５の各送受信ポート３にそれぞれ接続してあ
る第１の端子１１と第２の端子１２とを備えるととも
に、追加端末管理装置４０の送受信ポート３と中継ポー
ト４とがそれぞれ接続される第３の端子１３と第４の端
子１４とを備えている。Of these terminal management devices 5, two terminal management devices 5.5 (the upper two in FIG. 1) are connected in series via a relay terminal portion 8. 8, a series circuit of the terminal management device 40 connected to a plurality of additional refrigeration and cooling devices 41 can be connected. Each of the additional terminal management devices 40 includes a control unit 32, a storage unit 33, a sensor 34, an alarm output unit 35, a transmission / reception unit 36, a transmission / reception port 3, and the like, as in the terminal management device 5, and further includes a relay port 4. ing. The relay terminal unit 8 includes a first terminal 11 and a second terminal 12 which are respectively connected to the respective transmission / reception ports 3 of the terminal management devices 5.5. A third terminal 13 and a fourth terminal 14 to which the relay port 4 is connected are provided.
【００１９】中継用端子部８に接続される各追加端末管
理装置４０は、これの送受信ポート３どうしおよび中継
ポート４どうしを通信線１によってそれぞれ直列接続す
るとともに、これの直列回路の終端に位置する追加端末
管理装置４０（図１中では下端）の送受信ポート３と中
継ポート４とを連結線１０で互いに接続している。各追
加端末管理装置４０どうしおよび直列回路の基端に位置
する追加端末管理装置４０（図１中では上端）と中継用
端子部８とは、心線４本の通信線１によってそれぞれ接
続される。Each of the additional terminal management devices 40 connected to the relay terminal unit 8 connects the transmission / reception port 3 and the relay port 4 thereof in series with each other by the communication line 1, and is located at the end of the series circuit. The transmission / reception port 3 and the relay port 4 of the additional terminal management device 40 (the lower end in FIG. 1) are connected to each other by a connection line 10. Each of the additional terminal management devices 40 and the additional terminal management device 40 (the upper end in FIG. 1) located at the base end of the series circuit and the relay terminal unit 8 are connected by the four communication wires 1. .
【００２０】ここで前述の通信線１の接続構造を図１と
図５と図６とに基づき具体的に説明する。即ちスーパー
マーケットなどの店舗においては、通常、図５に示すご
とく食料品売場などのフロア４２の周壁に沿って、例え
ば縦型オープンショーケース（冷凍冷却装置）６を並べ
てある。この場合、中継用端子部８の第１の端子１１と
第２の端子１２とが直結されており、主管理装置２と各
縦型オープンショーケース６の端末管理装置５とが直列
接続されている。Here, the connection structure of the communication line 1 will be specifically described with reference to FIGS. 1, 5 and 6. FIG. That is, in a store such as a supermarket, for example, as shown in FIG. 5, for example, a vertical open showcase (freezing and cooling device) 6 is arranged along a peripheral wall of a floor 42 such as a food counter. In this case, the first terminal 11 and the second terminal 12 of the relay terminal portion 8 are directly connected, and the main management device 2 and the terminal management device 5 of each vertical open showcase 6 are connected in series. I have.
【００２１】店舗のレイアウトの変更などに伴って、例
えば図６に示すごとくフロア４２の中央付近に複数台の
平型オープンショーケース４１が追加配置される場合に
は、これらの平型オープンショーケース４１の端末管理
装置（追加端末管理装置）４０の直列回路が中継用端子
部８に接続される。即ち、中継用端子部８は、第１の端
子１１と第２の端子１２との接続が外され、また、第１
の端子１１と第３の端子１３とが接続されるとともに、
第２の端子１２と第４の端子１４とが接続される（図１
の状態）。この状態で、前記直列回路の基端に位置する
追加端末管理装置４０の送受信ポート３と中継ポート４
とが第３の端子１３と第４の端子１４とにそれぞれ接続
されて、追加端末管理装置４０の直列回路が端末管理装
置５・５の間に割り込むように直列接続される。When a plurality of flat open showcases 41 are additionally arranged in the vicinity of the center of the floor 42 as shown in FIG. A series circuit of 41 terminal management devices (additional terminal management devices) 40 is connected to the relay terminal unit 8. That is, the relay terminal 8 is disconnected from the first terminal 11 and the second terminal 12 and
Terminal 11 and the third terminal 13 are connected,
The second terminal 12 and the fourth terminal 14 are connected (FIG. 1
State). In this state, the transmission / reception port 3 and the relay port 4 of the additional terminal management device 40 located at the base end of the series circuit
Are connected to the third terminal 13 and the fourth terminal 14, respectively, and are connected in series so that the series circuit of the additional terminal management device 40 interrupts between the terminal management devices 5.5.
【００２２】（第２実施例）図７は第２実施例の冷凍冷
却システムの通信線の接続構造を示している。第２実施
例では、第１実施例の主管理装置２と各端末管理装置５
とに中継ポート４をそれぞれ追加している。そして、各
装置２・５の送受信ポート３どうしおよび中継ポート４
どうしを通信線１でそれぞれ直列接続するとともに、こ
れらの直列回路の終端に位置する端末管理装置５（図１
中では下端）の送受信ポート３と中継ポート４とを連結
線９で互いに接続している。直列回路の基端に位置する
主管理装置２の送受信ポート３および中継ポート４には
終端抵抗７を接続してある。各装置２・５どうし、およ
び端末管理装置５・５と中継用端子部８とは、心線４本
の通信線１によってそれぞれ接続してある。(Second Embodiment) FIG. 7 shows a connection structure of communication lines of a refrigeration / cooling system according to a second embodiment. In the second embodiment, the main management device 2 and each terminal management device 5 of the first embodiment
And a relay port 4 is added. Then, the transmission / reception ports 3 of each of the devices 2 and 5 and the relay port 4
Each of them is connected in series by a communication line 1 and a terminal management device 5 (FIG. 1) located at the end of these series circuits.
The transmission / reception port 3 and the relay port 4 (at the lower end in the figure) are connected to each other by a connection line 9. A terminating resistor 7 is connected to the transmission / reception port 3 and the relay port 4 of the main management device 2 located at the base end of the series circuit. The terminals 2 and 5 and the terminal management device 5.5 and the relay terminal unit 8 are connected to each other by four communication lines 1.
【００２３】中継用端子部８は、端末管理装置５・５の
各中継ポート４にそれぞれ接続される第５・第６の端子
１５・１６を追加している。そして、主管理装置２と各
端末管理装置５とのみが直列接続される場合には、中継
用端子部８の第１・第２の端子１１・１２および第５・
第６の端子１５・１６がそれぞれ直結される。The relay terminal unit 8 has fifth and sixth terminals 15 and 16 connected to the respective relay ports 4 of the terminal management devices 5.5. When only the main management device 2 and each terminal management device 5 are connected in series, the first and second terminals 11 and 12 and the fifth and fifth terminals of the relay terminal 8 are connected.
The sixth terminals 15 and 16 are directly connected to each other.
【００２４】店舗のレイアウトの変更などに伴って前述
の追加端末管理装置４０の直列回路が中継用端子部８に
接続される場合には、中継用端子部８は、第５・第６の
端子１５・１６の接続が外され、また、第３の端子１３
と第５の端子１５とが接続されるとともに、第４の端子
１４と第６の端子１６とが接続される（図７の状態）。
この状態で、直列回路の基端に位置する追加端末管理装
置４０の送受信ポート３および中継ポート４がそれぞれ
第３・第４の端子１３・１４に接続される。When the series circuit of the additional terminal management device 40 is connected to the relay terminal 8 due to a change in the layout of the store or the like, the relay terminal 8 is connected to the fifth and sixth terminals. 15 and 16 are disconnected, and the third terminal 13 is disconnected.
And the fifth terminal 15 are connected, and the fourth terminal 14 and the sixth terminal 16 are connected (the state of FIG. 7).
In this state, the transmission / reception port 3 and the relay port 4 of the additional terminal management device 40 located at the base end of the series circuit are connected to the third and fourth terminals 13 and 14, respectively.
【００２５】中継用端子部８は、主管理装置２と端末管
理装置５との間や、各端末管理装置５の間のいずれか１
つあるいは複数箇所に設けてもよく、あるいはこれらの
間の全てに設けてもよい。中継用端子部８に接続される
追加端末管理装置４０は１台のみでもよい。The relay terminal section 8 is connected between the main management device 2 and the terminal management device 5 or between any one of the terminal management devices 5.
It may be provided at one or a plurality of locations, or may be provided at all between them. The additional terminal management device 40 connected to the relay terminal unit 8 may be only one.
【図１】本発明の第１実施例に係る冷凍冷却システムの
通信線の接続構造を概略的に示す配線図である。FIG. 1 is a wiring diagram schematically showing a connection structure of a communication line of a refrigeration and cooling system according to a first embodiment of the present invention.
【図２】本発明の通信線の接続構造を適用する冷凍冷却
システムを概略的に示すブロック構成図である。FIG. 2 is a block diagram schematically showing a refrigeration / cooling system to which the communication line connection structure of the present invention is applied.
【図３】本発明に係る主管理装置のブロック構成図であ
る。FIG. 3 is a block diagram of a main management device according to the present invention.
【図４】本発明に係る端末管理装置のブロック構成図で
ある。FIG. 4 is a block diagram of a terminal management device according to the present invention.
【図５】本発明に係る冷凍冷却システムの通信線の接続
構造を概略的に説明する説明図である。FIG. 5 is an explanatory view schematically illustrating a connection structure of a communication line of the refrigeration / cooling system according to the present invention.
【図６】本発明に係る冷凍冷却システムの通信線の接続
構造を概略的に説明する説明図である。FIG. 6 is an explanatory view schematically illustrating a connection structure of a communication line of the refrigeration / cooling system according to the present invention.
【図７】本発明の第２実施例に係る冷凍冷却システムの
通信線の接続構造を概略的に示す配線図である。FIG. 7 is a wiring diagram schematically showing a connection structure of a communication line of a refrigeration and cooling system according to a second embodiment of the present invention.
１ 通信線 ２ 主管理装置 ３ 送受信ポート ４ 中継ポート ５ 端末管理装置 ６ 冷凍冷却装置 ７ 終端抵抗 ８ 中継用端子部 １１ 第１の端子 １２ 第２の端子 １３ 第３の端子 １４ 第４の端子 ２４・３６ 送受信部 ４０ 追加端末管理装置 ４１ 冷凍冷却装置 DESCRIPTION OF SYMBOLS 1 Communication line 2 Main management device 3 Transmission / reception port 4 Relay port 5 Terminal management device 6 Refrigeration / cooling device 7 Termination resistor 8 Relay terminal unit 11 First terminal 12 Second terminal 13 Third terminal 14 Fourth terminal 24・ 36 transmitting / receiving unit 40 additional terminal management device 41 refrigeration cooling device
───────────────────────────────────────────────────── フロントページの続き (72)発明者 本間 睦 大阪府大阪市西淀川区御幣島３丁目16番11 号 福島工業株式会社内 (72)発明者 小嶋 英幹 香川県香川群香南町池内958 隆祥産業株 式会社香川工場内 (72)発明者 山岡 康成 香川県香川群香南町池内958 隆祥産業株 式会社香川工場内 Ｆターム(参考） 5K046 AA01 BA01 BB06 CC01 KK11 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Mutsumi Honma Fukushima Kogyo Co., Ltd., 3-16-11 Moundoshima, Nishiyodogawa-ku, Osaka-shi, Osaka (72) Inventor Eiken Kojima 958 Ikeuchi, Konan-gun, Kagawa-gun, Kagawa Prefecture Ryosho Sangyo Inside the Kagawa Plant Co., Ltd. (72) Inventor Yasunari Yamaoka 958, Ikeuchi, Kami-gun, Kagawa, Kagawa Prefecture Ryusho Sangyo Co., Ltd. F-term (reference) 5K046 AA01 BA01 BB06 CC01 KK11
Claims (4)
と、複数台の冷凍冷却装置６にそれぞれ接続した端末管
理装置５に設けた送受信ポート３とが直列接続されてお
り、主管理装置２と各端末管理装置５とが送受信ポート
３を介して通信することで、主管理装置２が各端末管理
装置５を介して冷凍冷却装置６を管理する冷凍冷却シス
テムにおいて、前記直列接続された管理装置２・５のう
ち、２つの管理装置５・５の送受信ポート３の間に、複
数台の冷凍冷却装置６にそれぞれ接続した端末管理装置
４０を追加的に直列接続して、主管理装置２と各追加端
末管理装置４０とを送受信ポート３を介して通信可能に
する場合の冷凍冷却システムの通信線の接続構造であっ
て、 各追加端末管理装置４０は中継ポート４を備えており、
各追加端末管理装置４０の送受信ポート３どうしおよび
中継ポート４どうしを通信線１でそれぞれ直列接続する
とともに、この直列回路の終端に位置する追加端末管理
装置４０の送受信ポート３と中継ポート４とを互いに接
続し、 前記直列回路の基端に位置する追加端末管理装置４０の
送受信ポート３と中継ポート４とを、前記２つの管理装
置５・５の送受信ポート３にそれぞれ接続することを特
徴とする冷凍冷却システムの通信線の接続構造。1. A transmission / reception port 3 provided in a main management device 2.
And the transmission / reception port 3 provided in the terminal management device 5 connected to each of the plurality of refrigeration / cooling devices 6 are connected in series, and the main management device 2 and each terminal management device 5 communicate via the transmission / reception port 3. By doing so, in the refrigeration / cooling system in which the main management device 2 manages the refrigeration / cooling device 6 via each terminal management device 5, the two management devices 5.5 of the series-connected management devices 2.5 are connected. A terminal management device 40 connected to each of the plurality of refrigeration and cooling devices 6 is additionally connected in series between the transmission / reception ports 3, and the main management device 2 and each additional terminal management device 40 are connected via the transmission / reception port 3. It is a connection structure of the communication line of the refrigeration / cooling system when enabling communication, wherein each additional terminal management device 40 has a relay port 4,
The transmission / reception port 3 and the relay port 4 of each additional terminal management device 40 are connected in series with the communication line 1 respectively, and the transmission / reception port 3 and the relay port 4 of the additional terminal management device 40 located at the end of the series circuit are connected. The transmission / reception port 3 and the relay port 4 of the additional terminal management device 40 connected to each other and located at the base end of the series circuit are connected to the transmission / reception port 3 of the two management devices 5.5. Connection structure of communication line of refrigeration and cooling system.
５の送受信ポート３が中継用端子部８を介して直列接続
されており、 中継用端子部８は、前記２つの管理装置５・５の送受信
ポート３にそれぞれ接続してある第１の端子１１と第２
の端子１２とを備えるとともに、前記直列回路の基端に
位置する追加端末管理装置４０の送受信ポート３と中継
ポート４とにそれぞれ接続するための第３の端子１３と
第４の端子１４とを備えており、 第１の端子１１と第３の端子１３とを接続するととも
に、第２の端子１２と第４の端子１４とを接続した状態
で、直列回路の基端に位置する追加端末管理装置４０の
送受信ポート３と中継ポート４とを第３の端子１３と第
４の端子１４とにそれぞれ接続することにより、前記２
つの管理装置５・５の送受信ポート３の間に追加端末管
理装置４０の直列回路が直列接続される請求項１記載の
冷凍冷却システムの通信線の接続構造。2. The two management devices 5 connected in series.
5 transmission / reception ports 3 are connected in series via a relay terminal unit 8, and the relay terminal unit 8 is connected to the first terminals 11 connected to the transmission / reception ports 3 of the two management devices 5.5. And the second
And a third terminal 13 and a fourth terminal 14 for connecting to the transmission / reception port 3 and the relay port 4 of the additional terminal management device 40 located at the base end of the series circuit, respectively. An additional terminal management device located at the base end of the series circuit in a state where the first terminal 11 and the third terminal 13 are connected and the second terminal 12 and the fourth terminal 14 are connected. By connecting the transmission / reception port 3 and the relay port 4 of the device 40 to the third terminal 13 and the fourth terminal 14, respectively,
The connection structure of a communication line of a refrigeration / cooling system according to claim 1, wherein a series circuit of the additional terminal management device (40) is connected in series between the transmission / reception ports (3) of the two management devices (5).
中継ポート４を備えており、主管理装置２および各端末
管理装置５の送受信ポート３どうしおよび中継ポート４
どうしを通信線１でそれぞれ直列接続するとともに、こ
の直列回路の終端に位置する端末管理装置５の送受信ポ
ート３と中継ポート４とを互いに接続し、 前記直列回路の基端に位置する主管理装置２の中継ポー
ト４に終端抵抗７を接続した請求項１又は２記載の冷凍
冷却システムの通信線の接続構造。3. The main management device 2 and each terminal management device 5 have a relay port 4. The transmission / reception ports 3 and the relay port 4 of the main management device 2 and each terminal management device 5 are provided.
Each of them is connected in series by a communication line 1, the transmission / reception port 3 and the relay port 4 of the terminal management device 5 located at the end of the series circuit are connected to each other, and the main management device located at the base end of the series circuit The connection structure of a communication line of a refrigeration / cooling system according to claim 1 or 2, wherein a terminating resistor (7) is connected to the relay port (4).
求項３記載の冷凍冷却システムの通信線の接続構造。4. The connection structure for a communication line of a refrigeration / cooling system according to claim 3, wherein the communication line 1 is a four-core cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000077716A JP2001267975A (en) | 2000-03-21 | 2000-03-21 | Connection structure for communication line in refrigeration and cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000077716A JP2001267975A (en) | 2000-03-21 | 2000-03-21 | Connection structure for communication line in refrigeration and cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001267975A true JP2001267975A (en) | 2001-09-28 |
Family
ID=18595234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000077716A Pending JP2001267975A (en) | 2000-03-21 | 2000-03-21 | Connection structure for communication line in refrigeration and cooling system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001267975A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05153005A (en) * | 1991-11-26 | 1993-06-18 | Oojisu Soken:Kk | Signal transmitter and key/sub stations and branching circuit using them |
| JPH0818597A (en) * | 1994-07-01 | 1996-01-19 | Yamatake Honeywell Co Ltd | Address setting method and device |
| JPH08121927A (en) * | 1994-10-27 | 1996-05-17 | Sanyo Electric Co Ltd | Centralized control device for show case |
| WO1998018236A1 (en) * | 1996-10-21 | 1998-04-30 | Yehuda Binder | Distributed serial control system |
| JPH10271138A (en) * | 1997-01-21 | 1998-10-09 | Nittan Co Ltd | Transmission system |
-
2000
- 2000-03-21 JP JP2000077716A patent/JP2001267975A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05153005A (en) * | 1991-11-26 | 1993-06-18 | Oojisu Soken:Kk | Signal transmitter and key/sub stations and branching circuit using them |
| JPH0818597A (en) * | 1994-07-01 | 1996-01-19 | Yamatake Honeywell Co Ltd | Address setting method and device |
| JPH08121927A (en) * | 1994-10-27 | 1996-05-17 | Sanyo Electric Co Ltd | Centralized control device for show case |
| WO1998018236A1 (en) * | 1996-10-21 | 1998-04-30 | Yehuda Binder | Distributed serial control system |
| JPH10271138A (en) * | 1997-01-21 | 1998-10-09 | Nittan Co Ltd | Transmission system |
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