JPH01202124A - Line voltage feed controller - Google Patents

Abstract

PURPOSE:To enable a plurality of line voltage feeding means to be collectively controlled, by controlling a circuit section so that working voltage may be fed to the circuit section, only when the output of a plurality of the line voltage feeding means in all is in normal state. CONSTITUTION:When a switch 108 is closed, from a power section 105, line voltage is fed to a first line voltage feeding means 101, and is converted to the working voltage of a first circuit section 106 by the first line voltage feeding means 101. By a first control means, the line voltage is controlled to be fed to a second line voltage feeding means 102, if the output of the first line voltage feeding means 101 is in a normal state. By the second line voltage feeding means 102, the line voltage is converted to the working voltage of a second circuit section 107. By a second control means 104, the working voltage is controlled to be fed to the first circuit section 106 from the first line voltage feeding means 101, if the output of the second line voltage feeding means 102 is in the normal state.

Description

[Detailed Description of the Invention] [Summary] This invention relates to a power supply voltage supply control device in a power supply voltage supply system, and is provided for the purpose of unifying a plurality of power supply voltage supply means and controlling them in the same manner as a single device. a plurality of power supply voltage supply means that converts the power supply voltage into a predetermined voltage and supplies it to the circuit section as an operating voltage; a power supply section that supplies the power supply voltage to these power supply voltage supply means;
A control means for controlling the supply of power supply voltage to another power supply voltage supply means based on the output of one power supply voltage supply means, and a control means for controlling the supply of power supply voltage to the other power supply voltage supply means based on the output of one power supply voltage supply means; the control means for controlling the supply of operating voltage to the circuit sections that are connected to the power source section; and a switch that cuts off and on the supply of the power supply voltage from the power supply section to each section, and configured to mutually monitor the outputs of the power supply voltage supply means. .

[Industrial application field]

The present invention relates to a power supply voltage supply control device, and particularly to a power supply voltage supply control device that can control a plurality of power supply voltage supply means as easily as a single device.

[Conventional technology]

In a power supply voltage supply system, the power to be supplied to the supplied circuit exceeds the capacity of one power supply voltage supply device, or there are multiple circuits that receive and receive the operating voltage and are installed in separate locations. In some cases, it is unavoidable to use multiple power supply voltage supply devices.

Figure 4 shows a plurality of voltage converters (
An example of a power supply voltage supply system including a switching regulator (for example, a switching regulator) is shown.

In the figure, the power supply voltage supply system includes a circuit section 405.
Voltage converter 40 that supplies operating voltage to 406 and 407
1, 402, 403, a power supply section 404 that supplies power supply voltage to these voltage conversion devices, and a switch 408 that cuts off and on the supply of power supply voltage. In this system, the voltage converters 401 and 4 are controlled by the switch 408.
It is possible to control whether or not to operate all of 02°403.

[Problem to be solved by the invention]

By the way, in the conventional method shown in Fig. 4, each of the voltage converters operates individually, so if one of the voltage converters that should be activated at the same time is damaged, the corresponding circuit section may be activated. Even if the voltage is not supplied, other voltage converting devices do that.

The operating voltage is supplied to circuit parts connected to other voltage conversion devices.

At this time, since the operating voltage is not supplied to some of the circuit sections that are to operate at the same time, there is a risk that the circuit sections may malfunction.

In the system in which multiple power supply voltage supply means operate independently as in 2, there is a problem in that there is no way to supply power after confirming whether each power supply voltage supply means is operating normally. .

The present invention was created in view of the above points, and provides a power supply voltage supply control system that integrally controls a plurality of power supply voltage supply means by mutually monitoring the outputs of the power supply voltage supply means. The purpose is to provide equipment.

[Means to solve the problem]

FIG. 1 is a principle block diagram of a power supply voltage supply control device according to the present invention.

In the figure, the first power supply voltage supply means 101 converts the supplied power supply voltage into a predetermined voltage and supplies it to the first circuit section 106 as an operating voltage.

The second power supply voltage supply means 102 converts the supplied power supply voltage into a predetermined voltage and supplies it to the second circuit section 107 as an operating voltage.

The power supply section 105 supplies a power supply voltage to the first power supply voltage supply means 101 and the second power supply voltage supply means 102 .

The first control means 103 controls the supply of the power supply voltage to the second power supply voltage supply means 102 based on the output of the first power supply voltage supply means 101 .

The second control means 104 controls the supply of the operating voltage to the first circuit section 106 based on the output of the second power supply voltage supply means 102.

The switch 108 cuts off and on the supply of power supply voltage from the power supply section 105 to each section.

Therefore, as a whole, the outputs of the power supply voltage supply means are mutually monitored and the plurality of power supply voltage supply means are collectively controlled.

[For production]

When the switch 108 is closed, the power supply voltage is supplied from the power supply section 105 to the first power supply voltage supply means 101, and is converted into the operating voltage of the first circuit section 106 by the first power supply voltage supply means 101. The first control means 1.degree. 3 controls the second power supply voltage supply means 102 to supply the power supply voltage if the output of the first power supply voltage supply means 101 is normal. The second power supply voltage supply means 102 converts the power supply voltage into an operating voltage for the second circuit section 107 . The second control means 104 controls the first power supply voltage supply means 101 to supply the operating voltage to the first circuit section 106 if the output of the second power supply voltage supply means 102 is normal.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 2 shows the configuration of a power supply voltage supply control device in an embodiment of the present invention. Further, FIG. 3 shows the configuration of a power supply voltage supply control device in another embodiment of the present invention.

(2) Correspondence between the embodiment and FIG. 1 Here, the correspondence between the embodiment of the present invention and FIG. 1 will be shown.

First power supply voltage supply means 101. Second power supply voltage supply means 1
02 is voltage converter W (switching regulator)
This corresponds to 201, 202, 301, 302°, and 303.

The power supply section 105 corresponds to the power supply sections 205 and 307.

First circuit section 106. The second circuit section 107 includes the circuit section 206
, 207, 304, 305, 306.

The first control means 103 includes a relay switch 203゜321
．． It corresponds to 341.

The second control means 104 includes a relay switch 204°311
．． It corresponds to 331.

Switch 108 corresponds to switches 208 and 308.

Examples of the present invention will be described below assuming that the correspondence relationship as described above exists.

In FIG. 2, the power supply voltage supply system includes a power supply section 205 that supplies power to the entire system, and circuit sections 206 and 2.
07, a voltage converter 201 that converts the supplied power supply voltage into an operating voltage for the circuit section 206, and a voltage converter 20 that converts the supplied power supply voltage into an operating voltage for the circuit section 207.
2, a relay switch 203 that senses the output voltage of the voltage converter 201 and controls the supply of power supply voltage to the voltage converter 202; and a relay switch 203 that senses the output voltage of the voltage converter 202 and supplies the operating voltage to the circuit section 206. and a relay switch 204 that controls the supply of.

In addition, the power supply voltage supply system in FIG. 3 is constructed by adding a voltage converter 303 and a circuit section 306 to the power supply voltage supply system shown in FIG. The relay switch 34 controls the supply of power supply voltage to the voltage converter 303 by controlling the switch 331.
1.

(ii) Relay switch configuration In the relay switch 203, when a specified current flows through the coil section 232, the switch section 231 closes (a)-(b).
The structure is such that a current flows between them.

Relay switch 204, 311, 321, 331.34
1 also has a similar configuration.

■, Operation of the example Reference is made to FIG. 2 below.

(i) Operation when the system is normal When the switch 208 is closed, a power supply voltage (for example, −48 V) is supplied from the power supply unit 205 to the voltage conversion device 201.

The voltage converter 201 converts the supplied power supply voltage (for example -
48 V) into the operating voltage of the circuit section 206 (for example, +5 V).

If the output of the voltage converter 201 is normal (+5V),
A specified current flows through the coil section 232 of the relay switch 203, the switch section 231 closes, and the voltage converter 202
Power supply voltage is supplied to

The voltage converter 202 converts the supplied power supply voltage (-48V
) is converted into the operating voltage of the circuit section 207 (for example, +12■).

If the output of the voltage conversion device 202 is normal (+t2V), a specified current flows through the coil section 242 of the relay switch 204, the switch section 241 is closed, and the operating voltage (+5V) is supplied to the circuit section 206.

In this way, all circuit parts are supplied with operating voltage.

(ii) Operation when there is an abnormality in the system When there is an abnormality in the system, for example, when the voltage converter 201 is damaged and the normal operating voltage (+5V) is not output, the coil section 232 of the relay switch 203 No current flows. Therefore, the switch section 231 remains open, the power supply voltage (-48V) is not supplied to the voltage converter 202, and neither of the circuit sections 206 and 207 is supplied with their respective operating voltages.

On the other hand, the voltage converter 202 is damaged and the normal operating voltage (
+12V) is not output, relay switch 204
Since the specified current does not flow through the coil section 242, the switch section 241 remains open, and the circuit sections 206 and 207
Neither of them is supplied with their respective operating voltages.

In this way, if any voltage conversion device in the system is damaged, all circuitry is de-energized.

In this way, the coil parts 232 and 242 of the relay switches 203 and 204 convert the voltage converters 201 and 202.
The switch sections 231 and 241 detect the outputs of the
By controlling the supply of power supply voltage to the voltage converter 202 and the supply of operating voltage to the circuit section 206, the voltage converters in the system are mutually monitored to ensure that all voltage converters are normal. It becomes possible to perform control so that the operating voltage is supplied to the circuit section only at certain times.

Further, in the same manner, it is possible to connect and control any number of voltage converters.

(2) Indulgence of 0-shot H Note that in the embodiment of the present invention described above, a voltage converter (switching regulator) was considered as the power supply voltage supply means, but the present invention is not limited to this, and a noise filter or the like may also be used. Further, the element used for the control means is not limited to a relay switch, but may be any element that operates by determining the output voltage of the power supply voltage supply means and can withstand the supplied current.

In addition, in ``correspondence between Examples and Figure 1'',
Although the correspondence between the present invention and the embodiments has been described, those skilled in the art can easily imagine that the present invention is not limited to this and that there are various modifications.

〔Effect of the invention〕

As described above, according to the present invention, the operations of the plurality of power supply voltage supply means are mutually monitored, and the operating voltage is supplied to the circuit section connected to the power supply voltage supply means only when all outputs are normal. By controlling the power supply voltage so that the power supply voltage supply means is controlled in such a manner, a plurality of power supply voltage supply means can be unified and controlled in the same manner as a single power supply voltage supply means, which is extremely useful in practice.

[Brief explanation of the drawing]

FIG. 1 is a principle block diagram of a power supply voltage supply control device according to the present invention, FIG. 2 is a configuration block diagram of a power supply voltage supply control device according to an embodiment of the present invention, and FIG. 3 is a block diagram of a power supply voltage supply control device according to another embodiment of the present invention. FIG. 4 is a block diagram of the configuration of a power supply voltage supply control device. FIG. 4 is a configuration diagram of a conventional power supply voltage supply system. In the figure, 101 is a first power supply voltage supply means, 102 is a second power supply voltage supply means, 103 is a first control means, 104 is a second control means, log is a power supply section, 106 is a first circuit section, and 107 is a first circuit section. 2 circuit parts, 108 is a switch, 201.202, 301, 302, 303, 401.4
02 and 403 are voltage converters (switching regulators), 205.307.404 are power supply units, and 203.204, 311, 321, 331, and 341 are relay switches. Ice layer 9 catechism 7°° mouth...ri country figure 1 1 promotion 917 blowing times figure 2

Claims (1)

[Claims] (1) Convert the supplied power supply voltage to a predetermined voltage and
A first power supply voltage supply means (101) that supplies the operating voltage to the circuit section (106); and a second supply voltage that converts the supplied power supply voltage into a predetermined voltage and supplies it as the operating voltage to the second circuit section (107). a power supply voltage supply means (102); a power supply section (1) that supplies a power supply voltage to the first power supply voltage supply means (101) and the second power supply voltage supply means (102);
05); a first control means (103) for controlling the supply of power supply voltage to the second power supply voltage supply means (102) based on the output of the first power supply voltage supply means (101); a second control means (104) that controls the supply of operating voltage to the first circuit section (106) based on the output of the power supply voltage supply means (102); and a power supply voltage from the power supply section (105) to each section. switch (108
), and a power supply voltage supply control device characterized by comprising: