JPH096499A - Interface board - Google Patents

Abstract

PURPOSE: To extend a power control range, to control power in response to the specification of a power conversion section and to extend the specification scope by allowing an I/F board to receive power supply from different power supply than that of a computer. CONSTITUTION: An interface board (I/F board) 2 obtains controlled power from a system independent of a power supply line 7 of a computer 1 and provides the power to a power control section 9 via a power conversion section 1 to obtain a prescribed function. Furthermore, the power control section 9, the power conversion section 10, a forced cooling section 11 are mounted on an aluminum printed circuit board (board) 12 having a heat radiation effect and the board 12 is mounted on the I/F board 2 to attain an object function. Thus, the object function and power specification are made complete on this board. Moreover, each function section is integrated, resulting that each function section is controlled directly by the computer and then the system can be adapted for more sophisticated system configuration, sophisticated system control is attained and the reliability is enhanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interface board for a computer to be used by mounting it in an option slot of the computer.

[0002]

2. Description of the Related Art In an example of a computer interface board, an A / D conversion board having a function of converting an analog amount into a digital amount and incorporating it into a computer, and a function of generating and outputting a control signal for driving a motor. There are boards with various interface functions, such as a motor control board, which are widely used for measurement applications and robot control applications. A /
A board that consumes less power, such as a D conversion board, can achieve its function with the power supplied from the computer, but in applications that require a relatively large amount of power, such as a motor drive, that function can be achieved only with the power supplied from the computer. Since it is difficult to achieve this, it is necessary to separately provide a power source for driving the motor or a device for driving the motor outside the computer.

[0003]

Since the interface board operates on the electric power supplied from the computer main body, the function which requires a comparatively large electric power of about 10 W or more has the purpose of being limited by the electric power specification. Is difficult to achieve on the board, and in order to solve the problem of heat generated by the consumed power,
There were many physically difficult problems such as the need for a radiator that was too large to be installed in an option slot of a computer, and it was not possible to implement all the desired functions on a given board. Moreover, the performance of the computer tends to increase, the power consumption tends to increase accordingly, and the power supply to the option slot tends to decrease, which is an increasingly difficult task.

[0004]

In order to solve the above-mentioned problems, the interface board according to the present invention obtains controlled power from a system independent of the power supply line of the computer, and through the power converter. From the power control unit to obtain a predetermined function, and further, any one of the power conversion unit, the power control unit, and the forced cooling unit is integrally provided and arranged on the same board. .

[0005]

According to this interface board, it is not necessary to separately install a power conversion unit, a power control unit, a cooling unit, etc., which are required outside the computer, and the intended function and power specifications can be completed on this board. . In addition, as a result of integrating each functional unit, it is easy to directly control each functional unit by a computer, and not only can a higher-level system configuration be supported, but a higher-level system control can also be performed, resulting in reliability. You can improve your sex.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A programmable power supply board (hereinafter referred to as a PPS board) having a simple circuit configuration will be described below as an embodiment of the present invention with reference to the drawings. Note that the reference numerals in FIGS. 1 to 3 are commonly assigned to the respective functions, and the power supply line 16 is assumed to be a commercial power supply line. FIG. 1 is a block diagram of a PPS board which is an embodiment of the present invention. In FIG. 1, an interface board 2 (hereinafter referred to as an I / F board) installed in an option slot 3 of a computer 1 is a system bus including an address bus, a data bus, and a control signal connected to a CPU 4. I / F board 2 via line 5
Data is written in the D / A converter 8 mounted on the CPU to obtain a predetermined analog amount. The obtained analog amount is input to the power control unit 9 in the next stage, and the predetermined power amount obtained by the power conversion unit 10 is controlled to the load 13 connected to the outside of the computer 1 via the load line 14. It is configured to supply electric power. The power control unit 9, the power conversion unit 10, and the forced cooling unit 11 have an aluminum printed wiring board 12 having a heat dissipation effect.
(Hereinafter, referred to as a board), the board 12 is I
The desired function is achieved by being mounted on the / F board 2. Since the D / A converter 8 consumes a very small amount of power, the power is taken from the power source 6 inside the computer 1.

FIG. 2 is a block diagram of a PPS board having a conventional configuration, in which the power conversion unit 10, the forced cooling unit 11 and the substrate 12 in FIG. Is supplied from the power supply 6 of the computer 1. Therefore, the controlled power is limited to the power range supplied through the option slot 3.

FIG. 3 is a block diagram of a programmable power supply device for controlling electric power similar to that of FIG. 1 according to the conventional configuration. In this configuration, the power conversion unit 10 in FIG.
The power control unit 9 is installed outside the computer 1, and the analog amount generated in the I / F board 2 is input to the power control unit 9 via the signal transmission path 15. In this case, there are many disadvantages such as increased cost due to separation of basic functions and reduced reliability due to wiring. If self-diagnosis is required to improve system reliability, etc. You will need to add a system.

A power conversion unit 10 in the PPS board,
FIG. 4 is an external view of a unit in which the power control unit 9 and the forced cooling unit 11 are integrally formed on the substrate 12. FIG.
FIG. 5 shows a conventional power control unit for controlling 25 W equivalent. Note that, in FIG. 4, only the main elements of each functional unit are shown, parts such as small passive components mounted on the back surface of the substrate 12 are not shown, and the power conversion unit 1
The smoothing capacitor used for 0 is not included in the unit. Further, in FIG. 5, only the power control element 42 mountable on the cooling element 50 is shown. FIG. 6 shows the temperature characteristics of the units of FIGS. 4 and 5 by A and B, respectively. At an ambient temperature of 25 ° C., the surface temperature of the substrate 12 is 47 ° C. in the unit of FIG. 4, and the surface temperature of the cooling element 50 of the unit of FIG. 5 is a value exceeding 100 ° C. With the configuration, it is difficult to control the corresponding power.

As another embodiment, by integrating a Peltier effect element (not shown) on the substrate 12 and taking in the corresponding electric power from the electric power conversion section, it becomes possible to obtain a larger cooling effect, so that a larger electric power can be obtained. It becomes possible to control. Similarly, if a temperature sensor element (not shown) is integrated, it becomes possible to monitor the temperature rise state by a computer, and more reliable control can be performed.

[0011]

According to the I / F board of the present invention, the following effects can be obtained by taking the power supply unit from a system different from the power supply of the computer. That is, the power control range can be expanded. The power according to the specifications of the power conversion unit can be controlled, and the specification range can be expanded. Power can be easily supplied to the elements required for forced cooling, such as the Peltier effect element, so that greater power control becomes possible. By arranging any one of the power conversion unit, the power control unit, and the forced cooling unit on the I / F board, the following effects can be further obtained. That is, it becomes possible to precisely control each functional unit, and it is possible to perform more advanced operations and improve the reliability of the system. Since the temperature distribution on the substrate is easily made uniform, stable performance can be obtained. By exchanging the integrated functional unit, it becomes easy to meet various power specifications. As the degree of integration of components increases, the forced cooling unit is widened to enhance the heat radiation effect, which enables even greater power control. Since the Peltier effect elements can be easily integrated, the cooling effect can be further enhanced, and large power control becomes possible. Since temperature sensor elements can be easily integrated, efficient heat dissipation control can be achieved. (10) Since it is a functional module, the mounting efficiency in the manufacturing process is increased, the cost is reduced, and the inspection efficiency is improved, which is suitable for mass production. (11) Great economic effect. (12) Maintenance performance is improved.

[Brief description of drawings]

FIG. 1 is a block diagram of a programmable power supply board that is an embodiment of the present invention.

FIG. 2 is a block diagram of a conventional programmable power supply board.

FIG. 3 is a block diagram of a conventional programmable power supply device.

FIG. 4 is a front view and a side view of an external view of a unit in which a power conversion unit, a power control unit, and a forced cooling unit are integrally configured according to the present embodiment.

FIG. 5 is a front view and a side view of an external view showing a conventional power control unit.

FIG. 6 is a temperature characteristic diagram of each unit of FIGS. 4 and 5;

[Explanation of symbols]

1 computer 2 interface board 3 option lot 4 CPU 5 system bus line 6 power supply 7 power supply line 8 D / A converter 9 power control unit 10 power conversion unit 11 forced cooling unit 12 aluminum printed wiring board 13 load 14 load line 15 signal transmission path 16 electric power feeding line 40 electric power conversion transformer 41 electric power conversion element 42 electric power control element 43 forced cooling element 44 for attaching to an interface board, lead terminal 50 cooling element

Claims (1)

[Claims] 1. An interface board, which is used by being attached to an option slot of a computer comprising an address bus, a data bus, a control signal, and a power supply line, the interface board comprising a power converter and a power controller. And a forced cooling unit, wherein the power conversion unit is supplied with power from a power source system independent of the power supply line of the computer, and the power conversion unit and / or the forced cooling unit. The interface board of the computer, wherein the unit and / or the power control unit is integrated.