JPS60531A - Data input device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an input device for inputting data from a large number of samples to a multi-processing device, and particularly to a data input device when the data has binary levels.

[Background of the invention]

The current aging device is used for the purpose of eliminating instability in the initial state of electrical (electronic) equipment before delivery. This energization aging also checks for abnormalities in electrical (electronic) equipment. Electrical (X-electronic) equipment typically has a large number of printed circuit boards. Therefore, the aging target is also applied to each printed circuit board. Detection of an abnormal condition of a printed circuit board during aging usually requires some means of knowing whether an individual printed circuit board is abnormal or not and whether the printed circuit board is inserted into the aging device itself. Conventionally, as a means for achieving this, two output arms were provided for each printed circuit board, one of which carried the former presence/absence signal, and the other one carried the latter presence/absence signal. The two presence/absence signals generally consist of contact signals from the contacts. The two output lines are coupled to the processing device as input lines, and the processing device receives two signals from the two output lines. Therefore, the number of input lines required is twice the number of printed circuit boards. Normally, this type of device can accommodate up to several hundred printed circuit boards, so the scale of the data processing device is enormous, and improvements have been desired.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a data input device that reduces the number of input lines to a data processing device.

[Summary of the invention]

In order to achieve the above object, the present invention shares a signal line indicating whether or not there is an abnormality in the printed circuit board and whether or not the printed circuit board itself is inserted, thereby reducing the number of required manual terminals to less than half of the conventional number. Details will be explained below using examples.

[Embodiments of the invention]

An embodiment of the present invention is shown in FIG. This example is a sample of T printed circuit boards +-1, +-2, . . .
・ l Ill, status detector 2-1.2-2°...
..., 2-T, an interface that removes noise from the detection signal and converts the level to an appropriate size 4-1.4-
2. . . . , 4-T, a multiplexer 5 for selecting an appropriate number of detected T signals, for example, 8 signals at a time;
, a central processing unit 6 that takes in the selected signal and executes judgments such as whether it is abnormal or normal, a keyboard 7 that gives various commands to the central processing unit 6, a video terminal 8 that displays processing results externally, and It is composed of a printer 9 and the like.

Status detector 2-1.2-2. ..., 2-T has the same configuration. In the figure, only the status detector 2-1 is shown in detail, and the alarm fuses 20-1. Contact 2+1. It consists of a limit switch 22-1. Alarm fuse 20-
1 is provided in the application path of the DC power supply Vcc to the printed circuit board 1-1, and when an overcurrent occurs, this fuse 2
0-1 is fused. Contact 21-1 is fuse 20-1
It turns ON when fi is not fused and turns OFF when fi is cut. The limit switch 22-1 is turned on when the printed circuit board 1-1 is mounted and housed in the aging device (set) and 0FF1 is not set. The interface 4-1 includes a light emitting diode 401, a resistor 41-1, 43-1, and a light receiving transistor 42-1. The other interfaces 42 to 4-T have the same configuration.

The functional feature of this embodiment is that the alarm fuse 2o-1 and the mint switch 22-1 are connected in parallel, and each signal is input to the multiplexer 5 as one signal S1. When the signal s1 is at the ground point (2+ −
1 and 22-1 both ON) has a light emitting diode 4o.
-1 is conductive and emits light. The light-receiving transistor 42-1 receives this light emission, and an L-level signal is input to the multiplexer 5. When the signal S1 is not at the ground point but in an open state (both 2+-1 and 22-I are 0FF), K is the light-emitting diode 4O-1i, 1 is not passed, and the light-receiving transistor 42-
1 is not conductive. Therefore, the multiplexer 5 receives an H level signal. This allows the connection 1a from the 91 interface circuits 4-1 to the multiplexer 5 to be
The number of lines has been reduced from the conventional two to one, that is, by half.

The functions of alarm fuses and limit switches that are combined into one system can be determined as follows. In this type of aging device, the probability that alarm fuse activation, that is, fuse blowing due to overcurrent and contact conduction, will occur simultaneously on two or more adjacent printed circuit boards is extremely small.

Therefore, only a closed contact signal that is generated independently on one printed circuit board can be considered as an abnormal occurrence, and continuous closed contact signals on two or more boards can be considered to indicate that no printed circuit board is inserted ( A limit switch 22-1 for determining whether or not the printed circuit board is set is connected in parallel with the alarm fuse contact 21-1).

The process of determining the operation of all alarm fuses and limit switches, including alarm fuse 20-1 and limit switch 22-1, is shown in a flowchart in FIG. First, the signal S+ I Ss on one input signal line of the data acquisition device
, S+, . . . 8T are read as opening/closing information. If it is open, Kn = 1 (however, n = 1
．． 2.・・・・・・ l111 If it is closed +L =
Remember it as O. That is, if Kn=1, that n
Both the contact point corresponding to the th printed circuit board'o guide fuse and the limit switch are OFF, the printed circuit board is set, and no abnormality has occurred. Kn
If = Q, at least either the compensation fuse contact or the limit switch on the th printed circuit board is (JN, indicating that the printed circuit board is not set or that an abnormality has occurred. After reading the T human power signal lines S, S, 7...ST, the status of the Kn-00Å force signal line Sn is determined to be whether the printed circuit board is not set or there is an abnormality. In other words, if the state Kn of the n-th input SrL is 0, first the previous n-1 inputs S7+, -
The state Kn-1 of 1 is checked, and if this is 0, that is, the closed state, it is determined that the nth input is not abnormal and that the printed circuit board is not set. If i<n-1 is 1, then check the state Kn+1 of the next n+1 input Sn+I. If Kn+1 is 0, it is determined that the printed circuit board is not connected to the input Sn, and KrL is 1.
In this case, since the input SrL is closed even though the inputs on both sides thereof are open, it is assumed that an abnormality has occurred, and an abnormality is displayed externally.

In the above embodiment, the contact 21-1 and the mint switch 2
2-1 are connected in parallel, but it can also be realized by connecting them in series. At this time, the configuration is such that the contact 21-1 is ON and the limit switch 22-1 is ON during normal operation. With this configuration, in the event of an abnormality or non-setting, the O output becomes OFF'F in the series circuit, and processing can be performed using the same logic as in the embodiment. [Effects of the Invention] As described above, according to the present invention, the printed circuit board Since the presence or absence of an abnormality and the presence or absence of a set are acquired using the same signal line, the number of signal lines connected can be greatly reduced, which in turn greatly reduces the cost of the entire device and improves reliability. effective.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a simple embodiment of the present invention, and FIG. 2 is a flow chart showing the same operation. 1... Printed circuit board 20-1... Signal fuse 22-1... Limit switch 4-1.4-2
~4-T...Interface circuit 5...Multiple receiver 6...Central processing unit 7...Keyboard 8...Video terminal -9...Printer support 1 diagram zm

Claims (1)

[Claims] 1. A first signal line group and a second signal line group represented by opening and closing of contacts, respectively.
Corresponding signal line groups are commonly connected to form a signal line group of the same system, and when two adjacent signal lines are in the same open or closed state, they are considered to be the first signal. However, when only one independent signal line is open or closed, the second
A data input device that assumes and captures signals. 2. The first term uses a contact signal of a limit switch that indicates the presence or absence of a printed circuit board as the first signal, and a contact signal of a rose fuse that detects the load state of the power supply supplied to the printed circuit board as a second signal. Data human powered device as described.