JP2502732B2 - Remote monitoring equipment test equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a test device for a remote monitoring device that remotely monitors a terminal device via a transmission path by a single monitoring control master station,
In particular, it relates to a test device for a remote monitoring device that tests the operating state of a terminal device.

[Prior Art] Generally, in a remote monitoring device, a plurality of terminal devices that monitor and control the status of corresponding equipment are connected to one monitoring control master station via a common transmission line, and this monitoring control is performed. The master station centrally monitors and controls each terminal device. And
At the time of installation and periodic inspection of such a remote monitoring device, it is possible to test whether or not each terminal device can function as it should. This test is a confirmation as to whether the terminal device is performing the corresponding processing based on the signal from the equipment.

For example, when the sensor signal emitted from the sensor of the equipment is in the environment monitoring state, it is impossible for each sensor to detect the actual humidity, temperature and dust state of the equipment. Then, at the time of installation and periodic inspection of the remote monitoring device, while looking at the compatibility table that lists the set values, set the resistance value of the resistor and the voltage value of the voltage generator to simulate the sensor signal equivalently. A signal was emitted, and this simulated signal was input to the terminal device to test whether the terminal device operates normally.

[Problems to be Solved by the Invention] Since the conventional remote monitoring device is configured as described above, by adjusting the resistors and the voltage generator while checking the compatibility table corresponding to the characteristics of various sensors. Therefore, the remote monitoring device must be installed and regularly inspected, which is cumbersome, and because there are several types of compatibility tables, unfamiliar ones may make a mistake in selecting the corresponding compatibility table or be familiar with it. Even if it happens at all, it can be misunderstood, and as a result,
There is a sufficient risk of determining that the terminal device is not operating normally.

An object of the present invention is to provide a testing device for a remote monitoring device, which enables testing of the remote monitoring device in a precise and short time.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a common case,
It is characterized in that a connecting means for connecting to the connecting portion of the terminal device and a signal setting means for setting a simulated signal equivalent to the sensor signal of the equipment are provided.

[Operation] Since the test device for the remote monitoring device according to the present invention is configured as described above, if the signal setting means is set in advance by checking the compatibility table before the test, the case common to the connection part of the terminal device during the test Just by connecting and fine-adjusting the connection means on the side, the test equipment will output a simulated signal equivalent to the sensor signal emitted from the sensor of the equipment. The simulated signal is received and transmitted to the remote control master station, and the supervisory control master station makes a display based on this. By comparing the result with the test device, the operating state of the terminal device can be determined. . As a result, it is possible to eliminate the hassle of setting resistors and voltage generators each time while checking multiple compatibility tables at the time of testing as in the past, and to greatly eliminate erroneous settings due to selection errors or misunderstandings in these compatibility tables. Can be prevented.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall configuration diagram in which a test device for a remote monitoring device is wired. One remote control master station 1 is connected to a plurality of terminal devices 3a, 3b, ... 3n via a common transmission line 2,
The equipment 4a, 4b, ... 4n connected to the connection parts 5a, 5b, ... 5n of these terminal devices 3a, 3b, ... 3n are constantly monitored. Then, at the time of installation or periodic inspection of such a remote monitoring device, it is equivalent to the sensor signal emitted from the sensors of the equipment devices 4a, 4b, ... 4n as connected to the terminal device 3a in the figure. Signal setting means 7 for transmitting a simulated signal, and the connection parts 5a, 5b, ... Of the terminal devices 3a, 3b ,.
A test device included in the common case 6 is connected to the connecting means 8 connected to 5n, and a test is performed as to whether or not each of the terminal devices 3a, 3b, ... 3n operates normally.

Details of such a test apparatus will be described with reference to FIGS. First, FIG. 2 and FIG. 3 are a perspective view of the test apparatus and an equivalent circuit therein.

The common case 6 is provided with a signal setting means 7 including various switches for setting a simulated signal, and a connecting means 8 for connecting to the terminal devices 3a, 3b, ... 3n, and inside thereof is shown in FIG. The equivalent circuit shown in is stored.

To adjust the humidity, the humidity adjustment equivalent circuit X is used. Here, since the sensor signal of the humidity sensor of the equipment is an electric signal based on the voltage value, the power source E of mV unit is used in this circuit. First, when turning on the humidity signal power switch 7x _1, a protection resistor r humidity signal power indication lamp 7x ₂ consisting of light emitting diodes connected in series is illuminated, indicating that the power is turned on. Seam then digital tester (not shown) to the humidity signal output line 8x, combined humidity setting dial 7x ₄ to 100% of the positions, sets the humidity adjusting dial 7x ₃ while viewing the display of the digital tester to a voltage of 100 [mV] . Then the humidity setting dial 7x ₄ Yuki sequentially turning from 100% to 0%, the voltage value so that the predetermined simulation signal is emitted against the compatibility table is set.

A temperature adjustment equivalent circuit Y is used to adjust the temperature. Here, since the sensor signal of the sensor of the equipment is an electric signal based on the resistance value, the temperature signal adjusting dial 7y ₁ and the temperature signal setting dial 7y _{2 including} trim resistors are used in this circuit. First, temperature signal output line 8y
Connect the digital tester to, specify the temperature with the temperature setting dial 7y ₂ , then fine-adjust the resistance value equivalent to the set temperature with the temperature signal adjustment dial 7y ₁ while looking at the compatibility table.
The resistance value is set so that a predetermined simulated signal is emitted.

The state adjustment equivalent circuit Z is used to adjust the state of dust and the like. The state setting switch 7z is used in this circuit because the sensor signal of the state sensor of the equipment is an electrical signal from the normally open and normally closed contacts. First, a tester is connected to the status signal output line 8z, and these status setting switches 7z are sequentially turned on and off to set a predetermined change in contact.

In this way, once you make adjustments in correspondence with the compatibility table, you only need to bring this test device to the site and connect the connection part 5a of the terminal device 3a and each output line 8x, 8y, 8z of the connection means 8. Can be tested. Therefore, there is no need to bring in various devices to the site and adjust them in correspondence with a plurality of compatibility tables as in the conventional case.

The operation of the test apparatus in which the simulated signal of each sensor is set in this way will be described using the flow chart of FIG.

The worker confirms from the drawing which of the state signal S ₁ , the humidity signal S ₂ , and the temperature signal S ₃ are being input from the equipment 4a to the terminal device 3a, and then the equipment from the connection portion 5a. Remove the input line connecting the device 4a and the terminal device 3a,
In step S ₄ , the output lines 8x, 8y, 8z of the test apparatus are connected to the connection section 5a of the terminal device 3a according to the input signal. Next, in step S ₅ , each simulated signal set in advance in the test apparatus is output. When it is confirmed that all the signals at step S ₆ is output, at step S _7, the monitor control master station 1
Then, it is determined whether or not the test signal is good. In making these judgments, the value set by the test device is input to the terminal device 3a as an electric signal, the terminal device 3a processes the data, and transmits the data to the supervisory control master station 1 via the transmission path 2. To do. The monitoring control master station 1 displays the data input on a display device (not shown), and if the value set on the test device and the value on the display device match, the monitoring device is good.

In this way, the terminal device can be tested by simply bringing the test device to which the simulated signal is set to the site and making the predetermined connection.In addition, when the terminal device is installed, the delivery of equipment is delayed. Even if the terminal device is not connected, various tests can be performed as long as the terminal device is connected to the supervisory control master station, which can contribute to shortening the installation work of the terminal device.

EFFECTS OF THE INVENTION As described above, in the present invention, the common case is provided with the connecting means for connecting to the connecting portion of the terminal device and the signal setting means for setting the simulated signal equivalent to the sensor signal of the equipment. Therefore, prior to the test, it is possible to check the compatibility table and set the simulated signal, so that at the time of the test, it can be emitted from the sensor simply by connecting the connecting means of the test device and the connecting part of the terminal device. A simulated signal equivalent to the sensor signal can be output. This eliminates the hassle of collating various devices such as resistors and voltage generators with many compatibility tables and setting them each time at the site, and the equipment and devices are connected even if the terminal device is installed. Since the terminal device can be tested even if it is not operated, the operation test of the remote monitoring device can be easily performed.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a test device for a remote monitoring device according to an embodiment of the present invention, FIG. 2 is a perspective view of the test device, and FIG.
FIG. 4 is an internal circuit diagram of the test apparatus, and FIG. 4 is an operation flow chart of the test apparatus. 1 ... Monitoring control master station, 2 ... Transmission path, 3a-3n ... Terminal device, 4a-4n ... Equipment, 5a-5n ... Connection part, 6 ... Common case, 7 ... Signal setting means , 8 ... Connection method.

Claims (1)

(57) [Claims] 1. A monitor / control master station, a plurality of terminal devices having a connection unit for connecting equipment, and a common transmission line connecting the monitor / control master station and the terminal device. Then, in the test device of the remote monitoring device for inputting a simulated signal equivalent to the sensor signal emitted from the sensor of the equipment to the terminal device to test the terminal device, in the common case, the terminal device 2. A test apparatus for a remote monitoring device, comprising: connecting means for connecting to the connecting portion of 1. and signal setting means for setting the simulated signal equivalent to the sensor signal of the equipment.