JPS5954975A - Inspection apparatus - Google Patents

Inspection apparatus

Info

Publication number
JPS5954975A
JPS5954975A JP16397782A JP16397782A JPS5954975A JP S5954975 A JPS5954975 A JP S5954975A JP 16397782 A JP16397782 A JP 16397782A JP 16397782 A JP16397782 A JP 16397782A JP S5954975 A JPS5954975 A JP S5954975A
Authority
JP
Japan
Prior art keywords
sensor
control device
current
voltage value
inspection
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.)
Pending
Application number
JP16397782A
Other languages
Japanese (ja)
Inventor
Yasushi Nakagawa
泰 中川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Priority to JP16397782A priority Critical patent/JPS5954975A/en
Publication of JPS5954975A publication Critical patent/JPS5954975A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28Testing of electronic circuits, e.g. by signal tracer
    • G01R31/2832Specific tests of electronic circuits not provided for elsewhere
    • G01R31/2836Fault-finding or characterising
    • G01R31/2839Fault-finding or characterising using signal generators, power supplies or circuit analysers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

PURPOSE:To achieve the maintenance of a system simply and with a high reliability by allowing the inspection of both a current output type sensor and a controller by the operation of a switch with I-V and V-I conversion circuits placed between the sensor and the controller. CONSTITUTION:An inspection apparatus 10 is connected to a sensor 1 through a cable connector 3 and to a controller 2 through a cable connect 11 for maintenance. When inspecting an output value of the sensor 1, a switch circuit 14 is connected to a resistor 12 to convert the current value thereof 1 into a voltage value which is indicated on an arithmetic display 15. At the same time the voltage is converted into original current with a voltage-current converter 16 to be fed to the controller 2. When the switch circuit 14 is set to the position of a potentiometer 13, a voltage value is sent out as false signal which allows the performance of a test.

Description

【発明の詳細な説明】 本発明はモーメントリミタ等に採用されている電流出力
型センサと、このセンサを制御する制御装置とを含むシ
ステムに使用される検査装置に関する・。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inspection device used in a system including a current output type sensor employed in a moment limiter or the like and a control device for controlling the sensor.

一般に、荷投機械に用いられる荷重検出器等の電流出力
型センサはこれを制御する制御装置と連結して使用され
ている。このように、センサと制御装置とを含むシステ
ムでは、センサだけでなく。
Generally, a current output type sensor such as a load detector used in a load dumping machine is used in conjunction with a control device that controls the sensor. Thus, in a system that includes a sensor and a control device, not only the sensor.

制御装置をも正常に動作しているか否かを定□期的に検
査、保守する必要がある。      、・□従来、電
流出力型センサの出力電流を検査する場合、制御装置と
の間の信号線を切シ離し、電流計をセンサと直列に接続
する一方、センサの負荷   :とじて標準質量器を接
続して検査を行ならている。
Control equipment also needs to be regularly inspected and maintained to see if it is operating properly. ,・□ Conventionally, when inspecting the output current of a current output type sensor, the signal line between it and the control device was disconnected, and an ammeter was connected in series with the sensor. are connected and tested.

他方、制御装置は外部から制御装置に擬似入力を与える
員に士・て検査さ:れて“る・具体、的に声、。
On the other hand, the control device is inspected by a person who provides pseudo inputs to the control device from the outside.

えば、セン呑を制御装置から切り離し°、電□流発病玉
器を制御御装置に接続し、電流発生器から擬似入力 □
を制御装置に供給することによって検査が行われている
For example, disconnect the sensor from the control device, connect the current generator to the control device, and use the pseudo input from the current generator.
The test is carried out by supplying the control device with:

しかしながら、上記した検査の方法はいずれもセンサと
制御装置間の信、号卿を切シ離す必要があるため、検査
終了後1.元に戻すために手間がかかるという欠点があ
る。また2元に戻した場合でも。
However, in all of the above inspection methods, it is necessary to disconnect the signals between the sensor and the control device, so 1. The drawback is that it takes a lot of effort to restore it. Even if it goes back to 2 yuan.

臨時的な接続であるため、ショート、断線等の事故が発
生する危険性がある。  □ 更に、センサの出力電流値及びl似的に発生した電流値
はそのまま電流値の層上表示しても、′−7ステムにお
ける動作をシミュレートすることができない。このため
、各電流値をシステムで用いられている工業単位(例え
ば、トン)に換算する必要がある。従来、電流値を工業
単位に換算する換算表あるいは換算式を使用して換算を
行っているため、検査には非常に時間がかかっていた。
Since this is a temporary connection, there is a risk of accidents such as short circuits and disconnections. □Furthermore, even if the output current value of the sensor and the current value generated analogously are displayed as they are on the current value layer, the operation in the '-7 stem cannot be simulated. Therefore, it is necessary to convert each current value into the industrial unit (for example, ton) used in the system. Conventionally, conversion has been performed using a conversion table or formula for converting current values into industrial units, which has taken a very long time to perform inspections.

□、本発明の目的はセンサ及び制御装置の検査を簡、1
.、、単吟行香ると共に、高い信頼性を有する検査装置
脩提棋することである。
□The purpose of the present invention is to simplify the inspection of sensors and control devices;
.. ,,The test equipment has a high reliability as well as a single test.

本発明によれば:′、・センサ及び制御装置の双方との
電気的接続を可能にするコネクタ手段と、センサから与
えられる電流値を第1の電圧値に変換する第1の変換手
段と、制御装置の検査の際、制御装置(舞似信号全第2
の、電圧値の形で供輪する擬似信号発生手段と、第1の
変換手品及び2似信号発生手段のいずれか一方を選択す
るためのスイッチ手段と、スイッチ手段で選択された電
:王位を所定の工業単位に変換して表示する演算表示器
と。
According to the invention:', Connector means enabling electrical connection with both the sensor and the control device; first converting means converting the current value given by the sensor into a first voltage value; When inspecting the control device,
, a pseudo signal generation means for supplying a voltage value in the form of a voltage value, a switch means for selecting either one of the first conversion magic trick and the second pseudo signal generation means, and a voltage value selected by the switch means. A calculation display that converts and displays the specified industrial units.

スイッチ手段で選択された電圧値を再度電流値に変換し
、コネクタ手段を灸して制御装置に送出する第2の変換
手段とを有する検査装置が得られる。
There is obtained an inspection device having second conversion means for converting the voltage value selected by the switch means into a current value again, moxibusting the connector means and sending it to the control device.

以下2図面を参照して、説明する。This will be explained below with reference to two drawings.

第1図を参照すると、検査、保守を行わない状態では、
電流出力型センサ1がその制御装置2とケーブルコネク
タ3を介して接続されている。このように、センサ1と
制御装置2とをケーブルコネクタ3を介して接続するこ
とにより、センサ1と制御装置2との間の電気的接続を
検査保守の際。
Referring to Figure 1, if no inspection or maintenance is performed,
A current output type sensor 1 is connected to its control device 2 via a cable connector 3. By connecting the sensor 1 and the control device 2 through the cable connector 3 in this way, the electrical connection between the sensor 1 and the control device 2 can be maintained during inspection and maintenance.

任意に切り離すことができる。It can be separated arbitrarily.

第2図を参照すると、検査、保守時における状態が示さ
れている。図に示すように、センサ1と制御装置2との
間には2本発明の一実施例に係る検査装置1.0が接続
されている。具体的に云えば。
Referring to FIG. 2, the state during inspection and maintenance is shown. As shown in the figure, two inspection devices 1.0 according to an embodiment of the present invention are connected between a sensor 1 and a control device 2. To be specific.

検査装置10t/′i第1図に示されたケーブルコネク
タ3を介してセンサ]と接続されており1月つ。
The inspection device 10t/'i is connected to the sensor via the cable connector 3 shown in FIG.

保守用ケーブルコネクタ11を介してセンサ2と接続さ
れている。ここで、第1図のケーブルコネクタ3は第2
図のケーブルコネクタ3及び保守用ケーブルコネクタ1
1の一部として分割されたものと考えてもよい。
It is connected to the sensor 2 via a maintenance cable connector 11. Here, the cable connector 3 in FIG.
Cable connector 3 and maintenance cable connector 1 in the diagram
It may be considered that it is divided as part of 1.

図示された検査装置10はケーブルコネクタ3に接続さ
れた電流電圧変換用抵抗器12及び、制御装置2の検査
の際、擬似信号を発生するだめのポテンショメータ13
とを備え、抵抗器12及びポテンショメータ13はそれ
ぞれ第1及び第2の電圧値E、及びE2として信号を発
生する。検査(5) 装置10は第1及び第2の電圧値E1及びE2を選択す
るスイッチ回路14.スイッチ回路14で選択された電
圧値を所定の工業単位(例刻ば、トン)に変換して表示
する演算表示装置15.及びスイッチ回路14で選択さ
れた電圧値を電流値に変換する電圧電流変換器16とを
備えている。
The illustrated inspection device 10 includes a current-voltage conversion resistor 12 connected to a cable connector 3, and a potentiometer 13 that generates a pseudo signal when testing the control device 2.
and the resistor 12 and potentiometer 13 generate signals as first and second voltage values E and E2, respectively. Test (5) The device 10 includes a switch circuit 14 for selecting the first and second voltage values E1 and E2. An arithmetic display device 15 that converts the voltage value selected by the switch circuit 14 into a predetermined industrial unit (for example, ton) and displays it. and a voltage-current converter 16 that converts the voltage value selected by the switch circuit 14 into a current value.

以下、この検査装置10の動作を説明する。The operation of this inspection device 10 will be explained below.

まず、センサ1の出力値を検査する場合には□。First, when inspecting the output value of sensor 1, select □.

スイレチ回路14予抵抗器12と接続する。この結果、
センサ1の電流値が第1の電圧値Elに変換され、演算
表示器15に与えられる。演算表示器15は第1の電圧
値E1の所定の工業本位に変換して表示する。一方、第
1の電圧値E1′は電圧電流変換器16・によシ元の電
流に変換され、制御装置2に保守用ケーブルコネクタ1
1を介して送出される。センサ1と制御装置2との関係
は非葆守時と等価であるから、信号に影響を与えること
なくセンサ1の出力をチェックできる。
The switch circuit 14 is connected to the pre-resistor 12. As a result,
The current value of the sensor 1 is converted into a first voltage value El, which is provided to the calculation display 15. The calculation display 15 converts the first voltage value E1 into a predetermined industrial standard value and displays it. On the other hand, the first voltage value E1' is converted into a source current by the voltage-current converter 16, and is sent to the control device 2 via the maintenance cable connector 1.
1. Since the relationship between the sensor 1 and the control device 2 is equivalent to that during non-monitoring, the output of the sensor 1 can be checked without affecting the signal.

一方、スイッチ回路14をポテンショメータ1:1ll
li/C七ツ卜すると、ポテンショメータ13か(6) ら第2の電圧値E2が擬似信号として送出される。
On the other hand, switch circuit 14 is connected to potentiometer 1:1ll.
When li/C is turned on, the second voltage value E2 is sent out as a pseudo signal from the potentiometer 13 (6).

この第2の電工値E2は演算表示器15及び電圧電流変
換器16を介して制御装置2に与えられ。
This second electrician value E2 is given to the control device 2 via the calculation display 15 and the voltage-current converter 16.

制御装置2を擬似的に動作させる。この構成では。The control device 2 is operated in a pseudo manner. In this configuration.

制御装置2に任意の擬似信号を与えることができ。An arbitrary pseudo signal can be given to the control device 2.

制御装置2の機能を種々の擬似信号によりテストできる
The functionality of the control device 2 can be tested using various pseudo signals.

以上述べた通り2本発明では、センサの検査モードと制
御装置の検査モードとを選択できる検査装置が得られる
。この検査装置を使用することによシ、センサと制御装
置を含むシステムの保守を簡単に且つ高い信頼性で行う
ことができる。
As described above, two aspects of the present invention provide an inspection device that can select between a sensor inspection mode and a control device inspection mode. By using this inspection device, maintenance of a system including a sensor and a control device can be performed easily and with high reliability.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は保守を行わない状態におけるセンサと制御装置
との間の接続関係を示す図、及び第2図は本発明の一実
施例に係る検査装置を接続した状態を示す回路図である
。 記号の説明 1・・・センサ、2・・・制御装置、3・・・ケーブル
コネクタ、10・・・検査装置、11・・・保守用ケー
ブルコネクタ、12・・・抵抗器、13・・・ポテンシ
ョメータ。 14・・・スイッチ回路、15・・・演算表示器、16
・・・電流電圧変換器。
FIG. 1 is a diagram showing the connection relationship between a sensor and a control device in a state where no maintenance is performed, and FIG. 2 is a circuit diagram showing a state in which an inspection device according to an embodiment of the present invention is connected. Explanation of symbols 1... Sensor, 2... Control device, 3... Cable connector, 10... Inspection device, 11... Maintenance cable connector, 12... Resistor, 13... potentiometer. 14... Switch circuit, 15... Arithmetic display, 16
...Current voltage converter.

Claims (1)

【特許請求の範囲】[Claims] ]、 測定すべき対象物に結合、・し、て使用され、前
記対象物から測定量を検出し、電流値の形・で生成する
センサと、該センサを與]御す・る制御装置、とを含む
システム、に使用され・、前記センサ及び前記制御装置
を検査する検査装置において、前記センサ及び前記制御
装置の双方と、検査装置との電気的接続を回部にするコ
ネクタ手段と、前記セイサがら与えられる電流値を第1
の電圧値に変換する第、1の変換手段と、前記制御装置
の検査の際、前記制御装・置に擬似信号令弟2の電圧値
の形で供給する擬似、信号発生手段と、前記第1の変換
手段及び前記擬似信号発有三、手段のいずれか=方を選
択するだめのスイッチ手段と、前記スイッチ手段で選択
された電圧値を所定の工業単位に変換して表示する演算
表示器と、前記スイッ・チ手段で選択さ・れだ、電圧値
を電流値に再・度変換・し、前記コネク・り1手段を介
して前記制御装置に送出する第2の変換手段とを有する
ことを特徴と1する検査装・置。 ・−
], a sensor that is coupled to an object to be measured and is used to detect a measured quantity from said object and generate it in the form of a current value, and a control device that controls the sensor; an inspection device for inspecting the sensor and the control device, comprising: a connector means for electrically connecting both the sensor and the control device to the inspection device; The current value given by the sensor is the first
a first converting means for converting the voltage value into a voltage value of a second pseudo signal; 1. A conversion means and a switch means for selecting one of the pseudo signal generation means; and an arithmetic display for converting and displaying the voltage value selected by the switch means into a predetermined industrial unit. and a second conversion means for reconverting the voltage value selected by the switch means into a current value and sending it to the control device via the connection means. Inspection equipment/equipment with features 1.・−
JP16397782A 1982-09-22 1982-09-22 Inspection apparatus Pending JPS5954975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16397782A JPS5954975A (en) 1982-09-22 1982-09-22 Inspection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16397782A JPS5954975A (en) 1982-09-22 1982-09-22 Inspection apparatus

Publications (1)

Publication Number Publication Date
JPS5954975A true JPS5954975A (en) 1984-03-29

Family

ID=15784407

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16397782A Pending JPS5954975A (en) 1982-09-22 1982-09-22 Inspection apparatus

Country Status (1)

Country Link
JP (1) JPS5954975A (en)

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