JPH0573775A - Contact information output circuit - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to provide a contact information output circuit which is inexpensive and can be miniaturized with respect to a contact information output circuit when a plurality of contact information is required. [Structure] Rotation of step motor 30 causes rotor 2 to rotate.
0 is rotated and a rotary switch with a step motor having a rotary switch 31 that connects the contact at the rotated position to the rotor 20 is used, and a different number of pulses is input for each input information, and the number of pulses at the time of information input In response to this, the step motor 30 of the rotary switch with the step motor is rotated, and the contact at the rotated position is rotated by the rotor 2
It is connected to 0 and turned on.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contact information output circuit used for an alarm device or the like for notifying a person at a distant place of the occurrence of a failure of a communication device, and more particularly to a contact information output circuit when a plurality of contact information is required. Regarding improvement.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram of essential parts of a conventional alarm device. In FIG. 3, when any one of the four obstacles occurs, the contact information output circuit 50- 53 is used.

The contact information output circuits 50 to 53 have the same configuration, and when fault information is input to the open collector 60, D
A current flows from the C power supply through the relay 61, the relay 61 operates, the contacts are turned on, and the terminal 71 is set to the ground potential.

The terminals 71 of the contact information output circuits 50 to 53 and the control circuit 40 are connected by wires, and the wires are normally connected from the DC power source to the DC via the resistance of the resistance module 41.
The power supply potential is applied, and when the contact is turned on, it becomes the ground potential, so that the control circuit 40 knows that a failure has occurred,
An alarm lamp lights up or an alarm buzzer sounds to notify humans of the occurrence of a fault.

As described above, the contact information output circuit for outputting the failure occurrence information by turning the contact on and off has the advantage that the information output is not easily affected even if the device to which the failure occurrence information is output is in an abnormal state due to a failure, and is reliable. It is often used because it has high properties.

[0006]

However, it is necessary to provide contact information output circuits using relays as many as necessary to output the failure information, and when a plurality of contact output information is required, the contact information output circuit becomes large and the cost increases. There is a problem that becomes.

An object of the present invention is to provide an inexpensive contact information output circuit which can be miniaturized when a plurality of contact output information is required.

[0008]

FIG. 1 shows the principle of the present invention. As shown in FIG. 1, in the contact information output circuit that outputs contact information by turning on a contact corresponding to any one of a plurality of information, the rotor 20 is rotated by rotation of the step motor 30. However, a rotary switch with a step motor having a rotary switch 31 that connects the contact at the rotated position to the rotor 20 is used, and a different number of pulses is input for each input information, depending on the number of pulses at the time of information input. The step motor 30 of the rotary switch with step motor is rotated, and the contact at the rotated position is connected to the rotor 20 to be turned on.

[0009]

According to the present invention, the rotor 20 is rotated by the rotation of the step motor 30, and the rotary switch with the step motor having the rotary switch 31 for connecting the contact at the rotated position to the rotor 20 is used. Different numbers of pulses are input to the switch, the step motor 30 of the rotary switch with step motor is rotated according to the number of pulses at the time of inputting information, and the contact at the rotated position is connected to the rotor 20 and turned on. I have to.

That is, the rotary switch 31 has one contact.
If there are ~ 6 and 6 pieces, the necessary number of 6 pieces of contact information can be output by connecting the contact and the rotor 20 with one rotary switch with a step motor. The contact information output circuit can be made small and inexpensive.

[0011]

FIG. 2 is a block diagram of essential parts of an alarm device according to an embodiment of the present invention. In FIG. 2, the necessary number of 7 contact points is output by using a rotary switch with a step motor that rotates the rotor 20 of the rotary switch 31 by the rotation of the step motor 30 and connects the rotor 20 to the contacts 1 to 7. It is realized and outputs an alarm.

As 7 fault information, 1 to 7 pulses are inputted to the open collector 42. Therefore, when 1 to 7 pulses are inputted to the open collector 42, the step motor 30 becomes 1 to 7 pulses. Because it rotates by an amount,
The rotor 20 is connected to any of the contacts 1-7.

The contacts 1 to 7 are connected to terminals 11 to 17 respectively, and the terminals 11 to 17 are respectively connected to the control circuit 4 by wires.
0, and the potential of the DC power source is applied to the line from the DC power source through the resistance of the resistance module 41.

On the other hand, the rotor 20 is connected to the terminal 21 and grounded. Therefore, the potential of the contact, for example, 1 connected to the rotor 20 is the potential of the DC power source and becomes the ground potential, and the control circuit 40 knows that a failure has occurred.

When the occurrence of a failure is known, the control circuit 40 informs the person of the occurrence of the failure by lighting an alarm lamp or sounding an alarm buzzer. That is, by using one rotary switch with a step motor, the required number of 7 pieces of contact information can be output in the example of FIG. 2, so that the contact information output circuit can be made inexpensive and compact.

[0016]

As described in detail above, according to the present invention, when a plurality of pieces of contact output information are required, there is an effect that a contact information output circuit which can be downsized at low cost can be obtained.

[Brief description of drawings]

FIG. 1 is a principle diagram of the present invention,

FIG. 2 is a block diagram of a main part of an alarm device according to an embodiment of the present invention,

FIG. 3 is a block diagram of a main part of a conventional alarm device.

[Explanation of symbols]

 1 to 8 are contacts, 11 to 17, 21, 71 are terminals, 20 is a rotor, 30 is a step motor, 31 is a rotary switch, 40 is a control circuit, 41 is a resistance module, 42 and 60 are open collectors, 50 to 53 Is a contact information output circuit, and 61 is a relay.

Claims (1)

[Claims] 1. A contact information output circuit for turning on a contact corresponding to any one of a plurality of pieces of information and outputting the contact information, when the step motor (30) is used.
The rotor (20) is rotated by the rotation of the rotor, and a rotary switch with a step motor having a rotary switch (31) for connecting the contact at the rotated position to the rotor (20) is used. The step motor (30) of the rotary switch with step motor is rotated according to the number of pulses at the time of information input, and the contact at the rotated position is connected to the rotor (20) to be turned on. A contact information output circuit characterized by the above.