JPS61128729A - Power feeder for monitor call system - 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] [Technical Field] The present invention relates to a power supply device for a supervisory call system, and more specifically, the present invention is provided with a slave device such as a doorbell and a master device such as an information panel, and the master device is provided with a slave device such as a doorbell and a master device such as an information panel. The present invention relates to a power supply device for a supervisory call system, which is provided with a power supply circuit for supplying power to a telephone.

BACKGROUND ART 1 Generally, in a monitored call system composed of a slave unit 1 such as a door phone and a master unit 9 such as an information panel, power is supplied to the slave unit 1 from the master unit 9. By the way, the second
As shown in the figure, recently some slave devices 1 are equipped with an intercom 2, an intercom control button illumination 3, etc., a 7 lasher 4, a television camera 5, etc., and in such devices, power supply is usually not necessary. This is done individually for each device.

For this reason, if the number of wires increases and the wiring takes time, -ζ
There is a problem. Here, the 7 lashers 4 are for notifying some kind of abnormality by blinking a lamp. In addition, since a large number of devices are installed in the slave device 1, the power consumption in the slave device 1 is large.
When these devices 2 to 5 operate all at once, the current capacity of the main device 9 becomes insufficient due to the rush current, and the operation may become unstable, such as distorting the image on the television camera 5. For this reason, if the current capacity of the parent device 9 is increased, a problem arises in that the parent device 9 becomes larger. In addition, intercom 2 and TV camera 5
is used only when guests come, and 7 lashers 4 are used only when an abnormality occurs and are not used all the time. There's a problem.

[Objective of the Invention 1 The present invention has been made in view of the above-mentioned points, and its main purpose is to enable the current capacity of the power supply circuit of the parent device to be set to a small value. Another purpose is to create a power supply device for a supervisory call system that prevents the current capacity from running out even when all devices in the slave units operate at the same time, even though the current capacity of the power supply circuit in the parent unit is small. It is about providing.

[Disclosure of the Invention] (Example) Hereinafter, Example 6 of the present invention will be explained based on the drawings.
As shown in the figure, the slave device 1 is installed outdoors, and includes an intercom 2 and lighting 3.7 for the operation buttons of the intercom 2.
It is equipped with a lasher 4 and a television camera 5, which share a common power supply line. The power of slave device 1! The section is composed of a rectifier circuit 6, a smoothing circuit 7, and a charging section 8.

The rectifier circuit 6 is connected to a power supply circuit 10 provided in the parent device 9 via a power supply line 11. The charging unit 8 is composed of a solar cell and a secondary battery connected in parallel, a secondary battery alone, a capacitor, etc., and the secondary battery *
A charging element such as a solar cell or a capacitor is charged by the output of the solar cell or the smoothing circuit 7. Each device 2 to 5 of the slave unit 1 is connected to the master unit 9 via a signal line 12, and audio signals from the intercom 2, video signals from the television camera 5, etc. are transmitted to the master unit 9 via the signal line 12. It will be sent)
It has become. The master device 9 is provided with a television 13 for displaying images from a television camera 5, and is configured to display and notify information sent from the slave device 1.

However, there was a visitor and the intercom 2 and TV camera 5
When a rush current flows when the flasher is used or when an abnormality occurs and the flasher operates, the current shortage is supplied from the charging section 8 to each device 2 to 5, and the operation of each device 2 to 5 is interrupted. It does not become unstable due to insufficient current and can be used reliably at all times. When each of the devices 2 to 5 is not in use, the charging unit 8 is charged by a minute current from the power supply circuit 11 of the main unit 10 or the solar cell, and sufficient charging is performed.

[Effects of the Invention 1] As described above, the present invention is provided with a charging part that is charged when each part of the slave unit is inactive, and the power lines of each part of the slave unit are connected in common, When each part of the unit operates, power is supplied to each part of the slave unit from both the power supply circuit of the master unit and the charging part of the slave unit, so the current capacity of the power supply circuit of the master unit can be set to a small value. A1) There is an advantage that it leads to the miniaturization of the parent device. In addition, since the charging part is installed in the slave unit so that the charging part is charged when each part of the slave unit is not operating, each part of the slave unit is charged at -k + -.
1, s i J, +/in 1 轡法ゆ い う Ｇ Ｇ Ｇ Ｇ ２, １ The shortage of current will be replenished by electricity to No. H, and the current capacity of the power supply circuit is small. Nevertheless, it has the advantage of always being able to perform stable operations.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a block diagram of a monitoring call system according to the present invention. 1 is the child organ. 8 is a charging section, 9 is a parent device, and 10 is a power supply circuit.

Claims (1)

[Claims] (1) In a supervisory call system in which a slave unit such as a doorbell and a master unit such as an information board are installed, and the master unit is equipped with a power supply circuit for supplying power to the slave unit, the power supply for each part of the slave unit is The slave unit is provided with a charging part that is charged when the lines are commonly connected and each part of the slave unit is not operating, and when each part of the slave unit is operating, the power supply circuit of the parent unit and the charging part of the slave unit are connected. A power supply device for a supervisory call system, characterized in that power is supplied to each part of a slave unit from both of the above.