JPH0616420Y2 - Multi-channel data input device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a multi-channel data input device capable of inputting various data such as DC voltage, thermocouple, temperature, and strain in multiple channels and performing switching processing.

[Outline of device]

The present invention is a multi-channel data input device capable of inputting various types of data such as DC voltage, thermocouple, temperature, strain, etc. to perform multi-channel data input processing. With this configuration, it is possible to perform highly accurate signal processing.

[Conventional technology]

When processing multi-channel measurement data such as temperature data at multiple locations, each data is supplied to a multi-channel data input device, and this data input device performs predetermined signal processing such as input data switching and signal compensation. After that, the data is supplied to a data recording unit (or another recording device) in the data input device to record data.

A conventional multi-channel data input device of this type is constructed, for example, as shown in FIG. In FIG. 3, (1) shows the whole multi-channel data input device, and this input device (1) is constructed in a housing (2). That is, the housing (2)
The input terminal block (4) is attached to the side of the unit while it is floated by the multiple columns (3), and the terminal device (5) with multiple terminals attached to this input terminal block (4) is in the specified state. To place.
Then, the signal cable (6) having one end connected to each terminal device (5) is pulled out from the back surface of the input terminal block (4), and the other end of each signal cable (6) is placed inside the housing (2). Connect to motherboard (7). In this case, the mother board (7) is arranged, for example, in an upright state in the housing (2), and the plurality of signal processing boards (8) are attached to the mother board (7) in an orthogonal state. Then, circuit components (9) such as a signal switching relay and a signal compensating circuit are attached to the signal processing board (8). And each signal processing board
The signal processed in (8) is supplied to the data recording unit (not shown) via the motherboard (7).

When processing multi-channel input data using the data input device (1) with this configuration, connect each terminal of the terminal device (5) to the data source and connect the data of each channel from the data source to the terminal. The signal is supplied to the motherboard (7) via the device (5) and the signal cable (6), and is supplied from the motherboard (7) to different signal processing boards (8) for each predetermined channel. Then, the signal processing board (8) performs channel switching by a signal switching relay, performs various signal processing such as signal compensation, and supplies the processed signal to the data recording unit. By doing so, the data recording unit takes in the input data of a plurality of channels, for example, in a time division manner, and records the multi-channel data.

By the way, the reason why the input terminal block (4) is attached separately from the housing (2) as the main body is to measure the input signal with high accuracy. That is, this type of input device is considered to input various measurement data such as DC voltage, thermocouple, resistance temperature detector, strain, etc., but at the time of measurement of the thermocouple, the input terminal is balanced with the outside air temperature. The general method is to keep it, and it is necessary to prevent various noises from being drawn into the input device. To meet these requirements, the input terminal block
(4) is installed separately.

[Problems to be solved by the device]

However, when the input terminal block (4) is installed away from the main body in this way, the motherboard (7) and the input terminal block (4) inside the main body are attached.
A signal cable (6) and a connector for connecting to and are required, and if such connecting means is provided, each terminal device (5)
The state of the signal transmission path from to the signal processing board (8) is likely to be non-uniform, and there is a disadvantage that the measurement accuracy is affected. That is, the measurement accuracy of the input signal deteriorates due to the influence of the conductor resistance of the signal cable (6) and the contact resistance of the connector. To solve this problem, the signal cable
(6) A special and expensive conductor with low conductor resistance is required, and it is necessary to provide a resistance correction resistor for each channel on the signal processing board (8), which complicates the configuration of the device. was there.

In view of these points, the present invention has an object to provide a multi-channel data input device capable of highly accurate signal processing with a simple configuration.

[Means for Solving the Problem] The multi-channel data input device of the present invention is, for example, as shown in FIG. 1, an input terminal block (13) in which a plurality of data input terminals are installed and arranged at predetermined intervals from the body. And a signal processing board (15) which is directly connected to the input terminal block (13) through predetermined connectors (13a) and (15a) and is housed in the main body.
It is equipped with and.

[Action]

According to this configuration, the input terminal block (13) is directly connected to the signal processing board (15) without passing through the signal cable or the motherboard, so that the configuration is simple and the signal processing board (15 The disturbance of the input signal due to the condition of the signal transmission path up to () does not occur.

〔Example〕

An embodiment of the multi-channel data input device of the present invention will be described below with reference to FIGS. 1 and 2.

In FIG. 1, (10) shows the whole multi-channel data input device, and this multi-channel data input device (10) is a housing.
It is composed of (11). In this case, the input terminal block (13) is attached to the side surface of the housing (11) while being floated by the multiple columns (12), and the plurality of terminals are arranged on the input terminal block (13). The terminal device (14) is placed in a predetermined state. Then, a plurality of connectors (13a) connected to each terminal device (14) are provided on the back surface side of the input terminal block (13). And each connector (1
A through hole (11a) for passing a signal processing substrate (15) described later is provided on the side surface of the housing (11) near the portion (3a).

The signal processing board (15) of the present example is provided with a connector (15a) connected to the connector (13a) of the input terminal block (13) described above at one end, and is supplied through this connector (15a). The circuit components (16) for switching the input signal of each channel and compensating the signal are arranged in a predetermined state. In addition, a connector (15b) is provided at the other end of each signal processing board (15)
The processed signal is output via (15b).

Then, as shown in FIG. 2, a guide rail (18) is provided in the housing (11) to which the signal processing board (15) configured as described above is attached. This guide (18) has a through hole (1
1a), one end of the signal processing board (15), whose left and right are held by the guide rails (18), has a through hole (11a).
From outside to the outside of the housing (11).

When assembling the data input device of this example, as shown in FIGS. 1 and 2, each signal processing board (15) is held by the guide rail (18) and the through hole (11a ) Is connected to the connector (13a) of the input terminal block (13). By doing this,
The measurement data of each channel obtained at the input terminal of each terminal device (14) is directly supplied to the signal processing board (15) through the connectors (13a) and (15a), and this board (15 Predetermined signal processing is performed by the circuit component (16) provided in ().

Then, the connector (15b) at the other end of the signal processing board (15)
Then, connect the signal cable (17) via the connector (17a), and connect the signal cable (1) to the data recording unit (not shown) side.
The processed signal is supplied via 7).

Thus, according to the multi-channel input device of this example, the input terminal block (13) having a plurality of terminals for inputting multi-channel data is separated from the housing (11) by a predetermined distance, and the input terminal block is Since the temperature of (13) is kept in equilibrium with the outside air temperature, the thermocouple and the like can be measured with high accuracy. Then, since the input terminal block (13) and the signal processing board (15) thus arranged apart are directly connected via the connectors (13a) and (15a), they are connected by a signal cable or the like. As in the case, the resistance value does not become non-uniform, and a mother board etc. are not required, which simplifies the configuration. In addition, the simple structure of the connecting portion improves the reliability of the device.

Since each signal processing board (15) is connected by the connector (15a), the board can be used for maintenance and repair.
(15) can be easily removed and replaced, and it is easy to handle.

In the above-described embodiment, the data recording is performed by a circuit separate from each signal processing board (15), but the circuit configured in this signal processing board (15) is used to record the data of each channel. Detection and recording processing may be performed. Furthermore, the present invention is not limited to the above-described embodiment, and it goes without saying that various other configurations can be adopted.

[Constitution of device]

According to the multi-channel data input device of the present invention, there is an advantage that highly accurate signal processing can be performed with a simple structure.

[Brief description of drawings]

FIG. 1 is a partial sectional front view showing an embodiment of the multi-channel data input device of the present invention, FIG. 2 is a partial sectional side view seen from the direction of arrow A in FIG. 1, and FIG. 3 is a conventional input device. FIG. (10) is a multi-channel data input device, (11) is a housing, (13)
Is an input terminal block, (14) is a terminal device, and (15) is a signal processing board.

Claims (1)

[Scope of utility model registration request] 1. An input terminal block provided with a plurality of data input terminals and arranged at a predetermined interval from the main body, and a transparent member provided on the main body and directly connected to the input terminal block through a predetermined connector. A multi-channel data input device comprising a signal processing board housed in a main body through a hole.