JPH114539A - Power supply controller for communication apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce power consumption by providing a control means for closing the switching means of another circuit blocks sequentially when a measured current level exceeds a specified level. SOLUTION: Upon elapsing a predetermined time after power is turned on, a control section 2 delivers a conduction request signal to a switch 3 in order to supply a signal processing section 11 with power through a power supply measuring unit 7. The control section 2 observes a current value measured through the current measuring unit 7 and delivers a conduction request signal to a switch 4 when a specified current value is reached. Consequently, a signal processing section 12 is supplied with a current through a current measuring unit 8. Similarly, the control section 2 observes a current value flowing a current measuring section 10 and supplies power to all signal processing sections. The peak of inrush current is suppressed when power is thrown in by distributing power supply to unnecessary circuits over the time at the time of starting and the entire system can be configured at a low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention is applicable to all systems in which a large current flows when the power is turned on. Power supply is not always required for the entire system, but is required only when required. The present invention relates to a power supply control device for communication equipment capable of reducing power consumption in a system having a circuit portion.

[0002]

2. Description of the Related Art Conventionally, a power supply device such as a communication device, for example, an exchange, has a power supply capacity necessary for starting up the entire device when the power is turned on, and a power supply which can withstand a large current which does not appear during operation. It was installed. The countermeasure against the inrush current at the time of turning on the power has been solved by using an inductance on the side receiving the power supply.

[0003]

However, the use of inductance as a measure against inrush current requires a large inductance when power is supplied at one time, which increases the mounting area. Most of the switches and the like are circuits for processing a plurality of signals, and these circuits are not all necessary for operation immediately after the system is started. Also, during the operation of the exchange, etc.
It is unlikely that a large current will flow when the power is turned on, and enabling the system to be started using a power supply having the required capacity during operation will contribute to a reduction in the size and cost of the system.

The present invention has been made in view of such a conventional problem,
It is an object of the present invention to provide a communication device power supply control device that achieves low power consumption by supplying a minimum power supply necessary for system operation.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention suppresses peaks such as inrush current at power-on by dispersing power supply to circuits not required at the time of start-up. Thus, the entire system can be constructed at a low price. Further, the power supply to a circuit portion not used in the operation of the system is stopped to further reduce power consumption.

[0006]

A power supply control device for communication equipment according to a first aspect of the present invention opens and closes a plurality of independent circuit blocks connected to a power supply and supplies power to each of the circuit blocks. A plurality of switch means, a plurality of current measuring means for measuring a current flowing into each of the circuit blocks, and closing the switch means for a circuit block necessary for operation at the time of power-on, and measuring by the current measuring means. Control means for sequentially closing the switch means for the other circuit blocks when the current value exceeds a certain value. In addition, there is an effect that a power supply having a capacity used regularly can be used, the operation cost of the power supply unit can be suppressed, and an inexpensive system can be constructed as a whole.

According to a second aspect of the present invention, there is provided a power supply control device for a communication device according to the first aspect, wherein the control means includes an operation unnecessary among the circuit blocks to which the power is supplied. The system is provided with means for stopping power supply to the circuit block, and has an effect of making it possible to construct a system with lower power consumption by stopping power supply to unused circuit portions.

(Embodiment 1) FIG. 1 shows a configuration of a power supply control device for communication equipment according to Embodiment 1 of the present invention. In FIG. 1, 1 is a power supply, 2 is a control unit, 3
To 6 are switches, 7 to 10 are current measuring devices, and 11 to 14 are signal processing units. A solid arrow indicates a power supply path, and a broken arrow indicates a signal transmission path. The control unit 2 removes the signals from the current measuring devices 7, 8, 9, and 10, and switches 3, 4,
Control for transmitting a conduction request signal to 5 and 6 is performed.

Hereinafter, the operation of the present embodiment will be described with reference to FIG. The power is turned on at time T1, and at T2 after a certain time, the control unit 2 transmits a conduction request signal to the switch 3. As a result, power is supplied to the signal processing unit 11 through the power measurement device 7. The control unit 2 observes the current value measured by the current measuring device 7 and transmits a conduction request signal to the switch 4 at a time T3 when the current value reaches a certain value. As a result, power is supplied to the signal processing unit 12 through the power measurement device 8. The control unit 2 observes the current value measured by the current measuring device 8, and transmits a conduction request signal to the switch 5 at a time T4 when the current value reaches a certain value. Thereby, power is supplied to the signal processing unit 13 through the power measuring device 9. The control unit 2 is a current measuring device 9
And a conduction request signal is transmitted to the switch 6 at a time T5 when the current value reaches a certain value. Similarly, the control unit 2 monitors the value of the current flowing in the current measuring unit 10, and power is supplied to all the signal processing units. When such control is not performed, as shown in FIG. 3, it can be seen that a large current larger than the current required at a steady state flows when the power is turned on and consumes a large amount of current.

As described above, according to the first embodiment, by dispersing the rush current at the time of turning on the power over time,
It is possible to use a power supply having a capacity that is regularly used, to reduce the operation cost of the power supply unit, and to construct an inexpensive system as a whole.

(Embodiment 2) The configuration of a power supply control device for communication equipment according to Embodiment 2 of the present invention is the same as that of Embodiment 1 shown in FIG. 1, so that a flowchart shown in FIG. Only the operation will be described. Now, assume that power is supplied to all the signal processing units 11 to 14 under the control of the first embodiment by turning on the power (step 2).
1). Next, it is checked whether or not there is an unnecessary power supply in operation among the signal processing units 11 to 14 (step 22).
For example, when it is no longer necessary to use the signal processing unit 12 in operation, the control unit 2 transmits a conduction stop request signal to the switch 4 to stop the power supply to the signal processing unit 12 (step 23). By repeating the above processing, power supply to other signal processing units is stopped in the same manner. If a signal processing unit use request is generated during that time (step 24), the control unit 2 checks whether the signal processing unit is used (step 25) and transmits a conduction request signal to a switch corresponding to the signal processing unit. do it,
Power supply to the signal processing unit is started (Step 26).

As described above, according to the second embodiment, the control unit 2 controls the operation of the circuit block to which the power is supplied.
By stopping power supply to circuit blocks that are unnecessary for operation, a system with lower power consumption can be constructed.

[0013]

As described above, according to the present invention, the power supply to the circuits that are not required at the time of startup is dispersed over time, thereby suppressing peaks such as an inrush current at the time of power-on and reducing the overall system. Can be built at a price. Further, by using the same configuration and stopping power supply to an unused portion of the device, further power saving can be achieved.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a power supply control device for a communication device according to an embodiment of the present invention.

FIG. 2 is a characteristic diagram showing a relationship between inflow current and time according to the first embodiment of the present invention.

FIG. 3 is a characteristic diagram when control is not performed for comparison in the first embodiment of the present invention.

FIG. 4 is a flowchart showing a control procedure according to the second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power supply 2 Control part 3, 4, 5, 6 Switch 7, 8, 9, 10 Current measuring device 11, 12, 13, 14 Signal processing part

Claims (2)

[Claims] 1. A plurality of independent circuit blocks connected to a power supply, a plurality of switch means for opening and closing supply of power to each of the circuit blocks, and a plurality of currents for measuring a current flowing into each of the circuit blocks. Measuring means and closing the switch means for a circuit block necessary for operation at the time of turning on the power supply, and when the current value measured by the current measuring means exceeds a certain value, the switch for another circuit block And a control unit for sequentially closing the units. 2. The power supply control for a communication device according to claim 1, wherein the control means includes means for stopping power supply to a circuit block which is unnecessary for operation among the circuit blocks to which power is supplied. apparatus.