JPH03276028A - Automatic diagnostic system - Google Patents
Automatic diagnostic systemInfo
- Publication number
- JPH03276028A JPH03276028A JP2075546A JP7554690A JPH03276028A JP H03276028 A JPH03276028 A JP H03276028A JP 2075546 A JP2075546 A JP 2075546A JP 7554690 A JP7554690 A JP 7554690A JP H03276028 A JPH03276028 A JP H03276028A
- Authority
- JP
- Japan
- Prior art keywords
- transmitter
- value
- flow rate
- personal computer
- zero
- 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.)
- Granted
Links
- 238000003745 diagnosis Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、配管された流路を流れる液体等の流量を検出
する発信器の状態を自動的に診断する自動診断方式に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an automatic diagnosis method for automatically diagnosing the state of a transmitter that detects the flow rate of liquid or the like flowing through a piped flow path.
［従来の技術］
工場内の各場所に配管された流路に流れる液体の流量値
等を検出する各発信器等の機器の定期点検時には、従来
保守者が発信器等が設置されている場所に赴き、これが
差圧発信器であれば高圧側と低圧側とを均圧にし、また
、電磁流量計であれば電磁弁を閉めて流速をゼロにし、
その後携帯用設定器を使用して１台毎に発信器のゼロ校
正を行っている。[Conventional technology] Conventionally, during periodic inspections of devices such as transmitters that detect the flow rate of liquid flowing through channels piped at various locations in a factory, maintenance personnel have traditionally inspected the locations where the transmitters, etc. are installed. If it is a differential pressure transmitter, equalize the pressure on the high pressure side and the low pressure side, or if it is an electromagnetic flowmeter, close the solenoid valve to reduce the flow velocity to zero.
After that, zero calibration of each transmitter is performed using a portable setting device.
［発明が解決しようとする課題］
上述した従来の発信器の診断は、均圧弁の操作および発
信器の校正を、自動的に行うシステムが無いため、保守
者が各発信器の設置場所に赴いて１台毎に手動で発信器
の校正を行っているので、校正に長時間を要し、効率が
悪いという問題があった。[Problems to be Solved by the Invention] The conventional transmitter diagnosis described above requires maintenance personnel to go to the installation location of each transmitter because there is no system that automatically operates the pressure equalization valve and calibrates the transmitter. Since the transmitter is manually calibrated for each transmitter, there is a problem that calibration takes a long time and is inefficient.
［課題を解決するための手段］
このような課題を解決するために本発明に係る自動診断
方式は、パソコンからの診断指示信号に基づき発信器に
流入する液体等の流入値をゼロに設定する設定手段と、
この設定手段により発信器への流入値がゼロに設定され
たときパソコンからの校正値信号に基づき発信器の流量
検出状態を診断する診断手段と、この診断手段の診断結
果に応じて発信器の校正を行う校正手段とを備えたもの
である。[Means for Solving the Problems] In order to solve such problems, the automatic diagnosis method according to the present invention sets the inflow value of liquid, etc. flowing into the transmitter to zero based on a diagnosis instruction signal from a personal computer. a setting means;
A diagnostic means for diagnosing the flow rate detection state of the transmitter based on the calibration value signal from the personal computer when the inflow value to the transmitter is set to zero by the setting means; and a calibration means for performing calibration.
［作用コ
診断指示信号により発信器への流入値がゼロに設定され
たとき、校正値信号に基づいて発信器の流量検出状態が
診断され、この診断結果に応じて発信器の校正が行われ
る。[When the inflow value to the transmitter is set to zero by the action diagnosis instruction signal, the flow rate detection state of the transmitter is diagnosed based on the calibration value signal, and the transmitter is calibrated according to the diagnosis result.] .
［実施例］ 次に、本発明について図面を参照して説明する。[Example] Next, the present invention will be explained with reference to the drawings.
第１図は、本発明の自動診断方式を適用したシステムの
一実施例を示す構成図であ−る。同図において、１は矢
印の向きに流れる液体等の流路、２〜４はこの流路１の
開閉を行う弁、５は同様に流路１の開閉を行う電磁弁、
６は通信機能を有し液体等の流量値を検出する発信器、
７は電磁弁５を開閉駆動する弁駆動部、８は発信器６か
らの流量値を受信するコントローラモニタと呼称される
受信計器、９は発信器６と通信を行う場合は受信器６か
らの流量値等をホールドして受信計器８に送出するモジ
ュール部、ｌＯは制御線、１１はＲ３−２３２Ｃ信号線
、１２は常時は発信器６で検出された流量値等のデータ
が４〜２０ｍＡの電流値にアナログ的に可変されて受信
計器８に伝送される４−２０伝送線、ＰＣはパソコン、
Ｅは発信器６に電力を給電する電源、Ｒは４−２０伝送
線の電流値を４〜２０ｍＡに確保するための抵抗である
。FIG. 1 is a block diagram showing an embodiment of a system to which the automatic diagnosis method of the present invention is applied. In the figure, reference numeral 1 denotes a flow path for liquid etc. flowing in the direction of the arrow, 2 to 4 valves that open and close this flow path 1, 5 a solenoid valve that similarly opens and closes the flow path 1,
6 is a transmitter that has a communication function and detects the flow rate value of liquid, etc.;
7 is a valve drive unit that opens and closes the solenoid valve 5; 8 is a receiving instrument called a controller monitor that receives the flow rate value from the transmitter 6; and 9 is a receiver that receives the flow rate value from the receiver 6 when communicating with the transmitter 6. A module section that holds the flow rate value and sends it to the receiving instrument 8, 1O is the control line, 11 is the R3-232C signal line, and 12 is the unit where the data such as the flow rate value detected by the transmitter 6 is normally 4 to 20 mA. A 4-20 transmission line that is analog-variable to the current value and transmitted to the receiving instrument 8, PC is a personal computer,
E is a power supply that supplies power to the transmitter 6, and R is a resistor for ensuring the current value of the 4-20 transmission line to be 4 to 20 mA.
そして、上記したように、発信器６と受信計器との間に
接続されたモジュール部９が発信器゛６と通信する場合
は、発信器６が検出した現在の流量値等をホールドして
このホールドした値を受信計器８にアナログ信号、すな
わち上記した電流値として送出するとともに、モジュー
ル部９と発信器６との間は、第２図に示されるようなデ
ィジタル信号によるデータ通信が行われる。As described above, when the module unit 9 connected between the transmitter 6 and the receiving instrument communicates with the transmitter 6, the current flow rate value etc. detected by the transmitter 6 is held and The held value is sent to the receiving instrument 8 as an analog signal, that is, the above-mentioned current value, and data communication is performed between the module section 9 and the transmitter 6 using digital signals as shown in FIG.
そして本発明は、従来保守者が発信器６の定期点検を行
う場合に、常時は開いている弁３．４を閉じ、′常時は
閉じている弁２を開いて発信器６に流れる流量値を「Ｏ
」とし、このときに検出される流量の値が「０」となる
ように発信器６を校正していたものを、自動化しようと
するものである。In the present invention, when a maintenance person performs periodic inspection of the transmitter 6, he closes the normally open valve 3.4, opens the normally closed valve 2, and measures the flow rate flowing to the transmitter 6. ``O
'', and the transmitter 6 is calibrated so that the value of the flow rate detected at this time becomes ``0'', which is intended to be automated.
以下、本発明の自動診断方式を適用したシステムの動作
を説明する。The operation of the system to which the automatic diagnosis method of the present invention is applied will be described below.
まず、保守者が発信器６を診断するためにパソコンＰＣ
が操作すると、パソコンＰＣからＲ３２３２Ｃ信号線１
１を介してモジエール部９に対して自動診断開始コマン
ド信号と校正値である設定値信号が送出される。モジュ
ール部９はこれらの信号を受信して、受信したこの設定
値を記憶するとともに、４−２０伝送線１２を介して発
信器６が受信計器８に送出していた流量値を検出してこ
の値をホールドして受信計器８に送出し、さらに制御線
１０を介して弁駆動部７に対し電磁弁５を閉状態とさせ
る閉状態指示信号を送出して、電磁弁５を閉じさせ発信
器６に流入する液体の量をゼロにさせる。First, a maintenance person uses a personal computer to diagnose the transmitter 6.
When operated, the R3232C signal line 1 from the PC
1, an automatic diagnosis start command signal and a set value signal, which is a calibration value, are sent to the module section 9. The module section 9 receives these signals and stores the received setting values, and also detects the flow rate value that the transmitter 6 is sending to the receiving meter 8 via the 4-20 transmission line 12. It holds the value and sends it to the receiving instrument 8, and further sends a close state instruction signal to the valve drive unit 7 via the control line 10 to close the solenoid valve 5, and causes the transmitter to close the solenoid valve 5. The amount of liquid flowing into 6 is made zero.
その後、モジュール部９は、発信器６に読み取らて送信
されるディジタル信号による流量値を４２０伝送線１２
を介して受信して記憶するとともに、この値を、パソコ
ンＰＣから受信して記憶していた設定値と比較し、この
流量値が設定値の範囲外であれば、ゼロ点校正コマンド
をディジタル信号により発信器６に送信する。こうして
、発信器６はこのゼロ点校正コマンド信号に基づいて自
身の校正を行う。Thereafter, the module section 9 transmits the flow rate value based on the digital signal read and transmitted to the transmitter 6 through the 420 transmission line 12.
At the same time, this value is compared with the set value received from the personal computer and stored, and if this flow rate value is outside the set value range, a zero point calibration command is sent as a digital signal. The signal is transmitted to the transmitter 6 by the transmitter 6. In this way, the transmitter 6 performs its own calibration based on this zero point calibration command signal.
その後、モジュール部９は、制御線１０を介して弁駆動
部７に対し電磁弁５を開状態とさせる開状態指示信号を
送出して、電磁弁５を開かせ発信器６に流入する液体の
量を復旧させるとともに、パソコンｐｃに対して流量「
Ｏ」状態時に発信器６の検出した流量値、すなわち診断
結果を返送して表示させる。この表示された診断結果に
より保守者は発信器６の状態が判断できる。Thereafter, the module section 9 sends an open state instruction signal to the valve drive section 7 via the control line 10 to open the solenoid valve 5, thereby causing the solenoid valve 5 to open and the liquid flowing into the transmitter 6 to be controlled. In addition to restoring the flow rate, the flow rate to the personal computer ``
The flow rate value detected by the transmitter 6 in the "O" state, that is, the diagnostic result, is returned and displayed. The maintenance person can determine the condition of the transmitter 6 based on the displayed diagnosis result.
なお、上記したように発信器６の状態を診断している間
は、受信計器９に対して発信器６が検出して送信する流
量値は、診断前の値がホールドされて送出され、この診
断が終了すると、「Ｏ」校正された現在の値が発信器６
から受信計器９側にアナログ信号で送信されるものとな
っている。Note that while the condition of the transmitter 6 is being diagnosed as described above, the flow rate value detected and transmitted by the transmitter 6 to the receiving instrument 9 is held at the value before diagnosis and sent out. When the diagnosis is completed, the current value calibrated to “O” is sent to the transmitter 6.
The analog signal is transmitted from the receiver to the receiving instrument 9 side.
以上説明したように、パソコンＰＣからのコマンドによ
り電磁弁５を閉じさせて発信器６に流入する液体の量を
「０」とし、発信器６にこの流入量を検出させることに
より発信器６の「Ｏ」校正を行うようにしたものである
。As explained above, the electromagnetic valve 5 is closed by a command from the personal computer PC, the amount of liquid flowing into the transmitter 6 is set to "0", and the amount of liquid flowing into the transmitter 6 is detected. It is designed to perform "O" calibration.
［発明の効果］
以上説明したように本発明に係る自動診断方式は、パソ
コンから入力した診断指示信号によって発信器への流入
値がゼロに設定されたとき、パソコンからの校正値信号
により発信器の流量検出状態を診断し、この診断結果に
応じて発信器を校正し、発信器の自動診断を行うように
したので、保守者が各発信器の設置場所に赴くことなく
、自動的に発信器を校正でき、従って校正も短時間で行
え、効率の良い診断が行えるという効果がある。[Effects of the Invention] As explained above, in the automatic diagnosis method according to the present invention, when the inflow value to the transmitter is set to zero by the diagnosis instruction signal input from the personal computer, the transmitter is activated by the calibration value signal from the personal computer. The system diagnoses the flow rate detection status of the transmitter, calibrates the transmitter according to the diagnosis result, and performs an automatic diagnosis of the transmitter. Therefore, maintenance personnel can automatically transmit transmissions without having to go to the installation location of each transmitter. It is possible to calibrate the instrument, therefore, the calibration can be done in a short time, and the effect is that efficient diagnosis can be performed.
第１図は本発明の自動診断方式を適用したシステムの一
実施例を示す構成図、第２図はこのシステム内の発信器
とモジュール部との間の伝送波形図である。
１・・・−流路、２〜４・・・・弁、５・・−・電磁弁
、６・・−・発信器、７・・・・弁駆動部、８−−・・
受信計器、９−・・・モジュール部、１０−・・・制御
線、１１・・・・Ｒ３２３２Ｃ信号線、１２・−・・４
−２０伝送線、ＰＣ・・・・パソコン。
第１図
第２図FIG. 1 is a block diagram showing an embodiment of a system to which the automatic diagnosis method of the present invention is applied, and FIG. 2 is a diagram of transmission waveforms between an oscillator and a module section in this system. 1...-flow path, 2-4... valve, 5... solenoid valve, 6... transmitter, 7... valve drive section, 8...
Receiving instrument, 9--Module section, 10--Control line, 11--R3232C signal line, 12--4
-20 transmission line, PC... personal computer. Figure 1 Figure 2
Claims (1)
検出する発信器と、この発信器からの検出信号を受信す
る受信計器と、この発信器と受信計器との間に接続され
発信器と通信を行う場合は前記検出信号をホールドして
このホールド値を前記受信計器に送出するモジュール部
と、前記モジュール部と通信を行うパソコンとを備えた
システムにおいて、 前記パソコンからの診断指示信号に基づき前記発信器に
流入する流入値をゼロに設定する設定手段と、 この設定手段により前記発信器への流入値がゼロに設定
されたとき前記パソコンからの校正値信号に基づき発信
器の流量検出状態を診断する診断手段と、 この診断手段の診断結果に応じて前記発信器の校正を行
う校正手段と を備え、前記パソコンからの指示に基づいて前記発信器
の状態を診断するようにしたことを特徴とする自動診断
方式。[Scope of Claims] A transmitter that has a communication function and detects the flow rate of liquid or the like flowing through a piped flow path, a receiving instrument that receives a detection signal from the transmitter, and a connection between the transmitter and the receiving instrument. A system comprising: a module section that holds the detection signal and sends this hold value to the receiving instrument when communicating with the transmitter connected between the transmitter and the computer; and a personal computer that communicates with the module section. a setting means for setting an inflow value flowing into the transmitter to zero based on a diagnostic instruction signal from the personal computer; a diagnostic means for diagnosing the flow rate detection state of the transmitter based on the diagnosis result of the transmitter; and a calibration means for calibrating the transmitter according to the diagnosis result of the diagnostic means; An automatic diagnosis method characterized by making a diagnosis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2075546A JPH0674997B2 (en) | 1990-03-27 | 1990-03-27 | Automatic zero point diagnosis method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2075546A JPH0674997B2 (en) | 1990-03-27 | 1990-03-27 | Automatic zero point diagnosis method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03276028A true JPH03276028A (en) | 1991-12-06 |
| JPH0674997B2 JPH0674997B2 (en) | 1994-09-21 |
Family
ID=13579306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2075546A Expired - Lifetime JPH0674997B2 (en) | 1990-03-27 | 1990-03-27 | Automatic zero point diagnosis method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0674997B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0181531U (en) * | 1987-11-20 | 1989-05-31 |
-
1990
- 1990-03-27 JP JP2075546A patent/JPH0674997B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0181531U (en) * | 1987-11-20 | 1989-05-31 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0674997B2 (en) | 1994-09-21 |
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