JPH0434771B2 - - Google Patents

Description

[Detailed description of the invention]

(a) Technical Field of the Invention The present invention relates to a temperature management control method for electrical equipment. (b) Background of technology In recent years, many types of electrical equipment have come to be provided in response to diversifying demand as technology advances. These electrical devices usually receive a commercial AC 50/60Hz, 100 or 200V as their operating power source, convert it into alternating current and/or direct current necessary for the operation of each functional component of the electrical device, and supply it. Multiple power supply functions (power supply units)
It is equipped with In addition, the control functions of each functional component are becoming more and more diverse with the development of semiconductor integration technology, and even highly integrated circuit elements with large-scale functions, such as microcomputers (MPUs) or 256Kb memory, can be reduced to a single compact package. It is now available at a low cost and is widely used as a component of electrical equipment. Since the circuit elements used in each of these components are usually made of silicon semiconductor, the recommended operating temperature is, for example, 0 to
The temperature is 70℃. However, as electrical equipment is expected to increase in functionality, it is also required to be smaller and lighter, so each functional component, including the power supply, continues to be mounted in high density, and the temperature rise due to heat generated during the operation of electrical equipment is kept to a set upper limit. In order to prevent this, air cooling or liquid cooling is used as a cooling means, while a temperature sensor detects the environment and/or temperature rise in each functional component, and according to the detection signal, the cooling capacity is adjusted and controlled, and an alarm is issued for abnormal temperature rise. Temperature management systems with protective actions such as notification or stopping the operation of electrical equipment at dangerous temperatures have come to be added to electrical equipment. (c) Prior art and problems Figure 1 shows a block diagram of a conventional temperature management control system. In the figure, 1 is a temperature system management section, 2a-n are functional components (units) including a power supply, 3a-n are temperature sensors installed corresponding to units 2a-n, and SWa-n are temperature sensors. 11 is a temperature management control circuit; 12 is a temperature control circuit;
13 is an input circuit for receiving the temperature detection signals from the sensors 3a to 3n; 13 is a means for displaying the temperature status in response to the temperature detection signals, such as an LED lamp display, a display, etc.; and 14 is a cooling adjustment circuit in response to the temperature detection signals; This is a control output circuit that sends an alarm notification or a management control signal such as stopping operation to some or all of the units 2a to 2n.
Although the sensors 3a to 3n are shown as being externally attached, they are actually attached to components of the corresponding units 2a to 2n that are subject to the strictest conditions. In normal operating condition with the above configuration,
SWa~n are always set on and sensor 3a
The temperature detection signals from the units 2a to n are input to the input circuit 12, and the control circuit 11 causes the display means 13 to display the corresponding detection signals, that is, the temperature states of the units 2a to n, according to preset conditions, and also controls the cooling. Adjustment signals (for example, starting/stopping a cooling fan, liquid refrigerant valve adjustment, etc.), notification of an abnormal temperature alarm to the operator (for example, issuing an alarm sound, blinking a display means, or forcing an interrupt on a display screen, etc.), or The control output circuit 14 sends out control signals for emergency stoppage of the operation of the unit and therefore of the electrical equipment. Note that the control circuit 11 may be realized by logic means using fixed wiring, or by a control program and control data using an MPU and storage means. There is no problem with temperature management control in the above operation.
However, when confirming and investigating the performance of electrical equipment through reliability tests, for example, when operating the equipment in a state that exceeds the guaranteed environmental temperature, or when performing an overload test, unnecessary alarms may be generated if the equipment is left in its normal operating mode. Since a notification or operation stop control is generated, a test is conducted in which SWa~n is turned off to stop the detection signal, and after the test, SWa~n is turned back on and then shipped. This method also allows testing that exceeds the set value in the operating mode, but since SWa~n are distributed, some or all of them may be shipped with turned off and the operating mode executed, or they may be accidentally turned off. If the user executes the normal operation mode, no detection signal will be obtained, so even if an abnormality occurs in the units 2a to 2n, normal temperature management control may not be performed and the units 2a to 2n may be destroyed. exist. Furthermore, when returning to the normal operation mode when attempting to check the temperature signal during the test, management control occurs, requiring a separate temperature detection means, which is cumbersome to operate. (d) Purpose of the invention The purpose of the present invention is to eliminate the problems of the prior art.
If you set the operation mode to the temperature management control circuit of the temperature system management section, normal management control will be executed, and if you set it to test mode, you can perform tests regardless of the state of the detection signal as before, and if necessary. We aim to provide a highly reliable temperature control method that allows temperature display to be obtained without the need for unit management control, and eliminates the need to forget to turn SWa to SWn on or execute the operating mode in the wrong OFF state, as was the case in the past. It is something to do. (e) Structure of the Invention The purpose of the present invention is to cool a functional component using a temperature detection signal from a temperature sensor that detects temperature changes in each part of a functional component that has multiple control functions, including a power supply unit of an electrical device. In a temperature management system that performs alarm notification or operation stop control, the temperature system management section is an input circuit that is directly connected to the temperature sensor in each component of the functional component section to input and receive a temperature detection signal, and a temperature system management section that receives a temperature detection signal from the input circuit. It is equipped with a display means for displaying the temperature status of each part of the functional component, a control output circuit for sending a control signal to the functional component, and a control circuit for controlling the input and control output circuits and the display means. When the operation mode signal is input, the control circuit performs temperature management control by setting the input and control output circuits and the display means to the operation state, and in the case of testing a functional component, among the test mode signals, which have multiple types, This is achieved by a temperature management control method characterized by controlling either the operation of the input circuit or the operation of only the control output circuit to be stopped depending on the type of the input test mode signal. (f) Embodiment of the invention An embodiment of the invention will be described below with reference to the drawings. FIG. 2 shows a block diagram of a temperature management control system in one embodiment of the present invention. In the figure, 1a is a temperature system management section, 2a-n are functional components including a power supply, and 3a-n are units 2a-n.
11a is a temperature management control circuit; 12 is an input circuit for receiving temperature detection signals from the sensors 3a to 3n; 13 is means for displaying the temperature state in response to the temperature detection signals; 14
1 is a control output circuit that sends out management control signals such as cooling adjustment, alarm notification, or stopping of some or all of the units 2a to 2n in response to the temperature detection signal. In the drawings, components having the same reference numerals as those of the conventional system have functions and characteristics common to those of the conventional system, and components with a suffix added have slightly different functions. This embodiment does not include conventional SWa-n for turning on/off the temperature detection signal. Therefore, when the control circuit 11a receives the operation mode signal and operates the input circuit 12, display means 13, and control output circuit 14 to perform normal temperature management control, the conventional switches SWa to SWa in FIG. There is no change in the temperature management operation when the switch is on. Next, there are multiple types of test mode signals, and when the test mode signal is input to the control circuit 11a, depending on the type of the test mode signal, a fixed function built in the control circuit 11a or a control program and control data (not shown) may be used. According to Table 1, input circuit 12, display circuit 1
3 and the control output circuit according to the set control logic, it is possible to perform a test in any test mode that exceeds the temperature setting range in the normal operating mode, and easily return to the normal operating mode. The conventional problems caused by forgetting to turn on SWa~n or disconnecting them incorrectly are solved. The test mode can only be set by the tester or maintenance person by operating an internal switch or the like.

[Table] In test mode B 1010, if the display means 13 and the control output circuit 14 are normal and the control functions of the control circuit 11a are normal, the temperature detection signal is input to the input circuit 1.
Since input processing is inhibited in test mode 2, the result is the same as test mode A. In test mode C, overload/high temperature tests, etc. can be performed while monitoring the temperature states of the units 2a to 2n according to the temperature detection signal. (g) Effects of the Invention As explained above, according to the present invention, the temperature management control signal during overload/high temperature tests is suppressed by the on/off switch of the temperature detection signal from the conventional temperature sensor, and the temperature control signal is suppressed during normal operation. It is possible to provide a useful temperature control system in which there is no occurrence of accidents due to forgetting to turn on the switch or erroneous disconnection, and a temperature detection signal from the temperature sensor can be obtained on the display means even during the test if necessary.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a conventional temperature management control system, and FIG. 2 is a block diagram of a temperature management system according to an embodiment of the present invention. In the figure, 1 and 1a are temperature system management units;
2a to n are functional components (units) of electrical equipment including a power supply, 3a to n are temperature sensors, SWa to n are switches, 11 and 11a are temperature management control circuits, 12
13 is an input circuit, 13 is a display means, and 14 is a control output circuit.

Claims (1)

[Claims] 1. A temperature management system that performs cooling, alarm notification, or operation stop control of functional components based on temperature detection signals from temperature sensors that detect temperature changes in each part of functional components that have multiple control functions, including the power supply unit of electrical equipment. The temperature system management section includes an input circuit that is directly connected to the temperature sensor in each component of the functional component and receives a temperature detection signal, and a temperature system management section that controls the temperature of each component of the functional component based on the signal from the input circuit. A display means for displaying the status, a control output circuit for sending a control signal to the functional component, and a control circuit for controlling the input and control output circuits and the display means, and the control circuit is configured when an operation mode signal is input. , input and control output Temperature management control is performed with each circuit and display means in the operating state, and in the case of testing a functional component, the input and control outputs A temperature management control method characterized by controlling either the operation of a circuit to be stopped or the operation of only a control output circuit to be stopped.