JPS6230159Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device for signals sent from a number of remote points, and particularly to a display device for signals sent in a binary coded decimal system.

In recent years, buildings in which fire alarms, burglar alarms, etc. are installed have become increasingly large, and the number of signal transmission lines from each warning area has increased significantly, making construction difficult and increasing the cost of wire materials. This has become a serious problem, and as a solution to these problems, devices are known that process signals using a binary coded decimal system, which requires fewer lines for signal transmission and reception.

A digital display system has generally been used as a display device for each of these signals.

However, so-called individual display devices are often required to display warning displays for each warning area for each district, and in this case, conventionally, binary signals etc. were expanded and displayed using relays or diode matrices. However, this matrix becomes very complex, and especially in deployment devices using relay contacts, each relay has the disadvantage of requiring a considerable number of contacts.

This invention solves these problems, and will be described in detail below with reference to an embodiment of a signal display device shown in the drawings and capable of displaying 1 to 999 individual signals.

Figure 1 shows the conventionally commonly used binary code 10
In the decimal system signal receiving device, the area is displayed numerically.
In each binary coded signal line bundle of digits, R indicates a receiver.

Furthermore, Fig. 2 shows the signal system shown in Fig. 1 developed and displayed using a well-known matrix. relay, L indicates indicator lamp, and E indicates power supply.

FIG. 3 shows an embodiment of the signal display device based on this invention, where M ₁ is an expansion matrix of the ones place, and M ₂ is an expansion matrix of the ones place.
The block of the expansion matrix that expands the 10's and 100's digits, S indicates a recovery switch, and other signals are shown in common with the symbols shown in FIGS. 1 and 2.

In the configuration shown in Figure 3, among the binary coded decimal signals sent from each of the X, Y, and Z line bundles,
First, the signal sent by the line bundle from X is expanded into decimal values 1 to 9 signals by matrix _M1 ,
The 10s and 100s signals sent to the lines l ₁ to l ₉ and from the Y and Z line bundles are all multiples of 10 ( ₁₀ , 20, 30...
...) and sent out to the lines l ₀ to l _10o .

In addition, self-holding relays A ₁ -A _o for district display are connected between the above-mentioned lines l ₁ -l ₉ and l ₀ -l _10o , respectively, and furthermore, through the self-holding contact a of this relay, A district indicator light L is connected to the terminal, and both ends thereof are connected to a power source E via a recovery switch S.

Therefore, the above signal operates the self-holding relay A and indicator light L connected to the output line l corresponding to the signal, and this relay operates the self-holding contact a.
is held by

It goes without saying that by using self-holding relay A, the next signal can always be on standby.

Further, in order to take out each district signal to the outside, it is sufficient to draw out other contacts (not shown) of self-holding relay A.

As in the configuration of this invention, the binary coded decimal signal is converted into 10
By dividing the expansion matrix into two parts, the 1's digit and the 10's digit, the expansion matrix is much simpler than the conventional one, and by combining this with a self-holding relay. This allows the above-mentioned signal to be easily stored, and furthermore, it is also possible to drive a control device in conjunction with this by using other contacts of the above-mentioned self-holding relay.

[Brief explanation of drawings]

Fig. 1 shows a signal reception display device using the conventional binary coded decimal system, Fig. 2 shows another display device of Fig. 1, and Fig. 3 shows a circuit diagram showing an embodiment of this invention. . X, Y, Z... Binary coded decimal line bundle, D... Alarm contact, M... Block diagram showing matrix, A... Self-holding relay, L... Display lamp, E... Power supply, S... Recovery switch.

Claims (1)

[Scope of utility model registration request] In a signal display device that displays a signal arriving from a remote point in the form of a binary coded decimal signal on an individual display device, the decimal expansion device for the ones digit of the binary coded decimal signal is converted into a decimal expansion device for the ones digit and above. A plurality of relay devices each having a self-holding function and an indicator energized by the relay device are provided separately from the deployment device and are provided between the output lines of each of the deployment devices. Characteristic signal display device.