Temperature protection design method and temperature protection test method

Abstract

The invention discloses a temperature protection design method which comprises the following steps of: S1, determining each possible damaged position of equipment, arranging a temperature detection device, and determining a temperature threshold on each position; S2, enabling the equipment to work in any working mode, heating the temperature until any temperature detection device detects that the temperature on a possible damaged position U reaches the temperature threshold T, and enabling the equipment to work for the preset time length at the temperature T; if the equipment is not damaged, setting the position U as a position to be set of a heating protection device in the working mode; and measuring the temperature of other possible damaged positions in the working mode; S3, selecting the next working mode, and executing the step S2 to obtain the position to be set of the heating protection device in each working mode; and S4, selecting at least one of the positions to be set of the heating protection device as the set position of the heating protection device, and setting the measured temperature of the position to be set of the heating protection device in each working mode as a protection trigger temperature. Through the invention, the design accuracy of high temperature protection can be improved.

Description

technical field [0001] The invention relates to the technical field of temperature protection, in particular to a temperature protection design method and a temperature protection test method. Background technique [0002] Temperature protection is also called overheat protection and over-temperature protection. The background is that under certain conditions, the temperature of the protected object rises abnormally, exceeding the designed temperature capability, resulting in damage to the protected object. Temperature protection technology tries to protect the protected object Before being damaged due to excessive temperature, the protection mechanism is triggered to prevent the protected object from being damaged, and the protected object is a device or a certain functional module on the device. [0003] The realization principle of the protection mechanism is: pre-arrange an overheating protection device at a selected position of the protected object, and determine the pr...

AI Technical Summary

Problems solved by technology

[0011] Heat the protected object as a whole until the overheating protection device operates. If the overheating protection design fails, the position of the overheating protection device is set incorrectly or the protection trigger temperature is set too high, the overheating protection device will not act before the protected object is damaged. Some devices will be damaged. In the worst case, a damaged device will cause a chain reaction and cause multiple faults. In this way, it is very difficult to find and repair the fault point.

Because the temperature protection test method is to heat up until the overheating protection device operates, if the overheating protection design does not meet the design expectations, the protected object must be damaged, and it is damaged once every test

[0012] However, when the overheat protection device is heated by local heating of the protected object such as a hot air blower to trigger the action of the overheat protection device, this test method can only evaluate that the subsequent circuit in the overheat protection device can operate, and it can only achieve this purpose. This is different from detection Whether the location of the overheating protection device and the setting of the protection trigger temperature are correct are far from the purpose of the test

Using this method seems to be able to test more quickly, but after the actual test is completed, the purpose of the temperature protection test cannot be achieved. It is entirely possible that the protected object can pass the temperature protection test, but it is still damaged due to overheating.

[0013] To sum up, the current design method of temperature protection lacks accuracy in choosing the setting position of the overheating protection device based on experience; designing according to computer simulation is more complicated, and it is difficult to reflect the actual environment and lacks accuracy.

As a result, the temperature protection design is prone to errors, which will damage the protected object

[0014] The existing temperature protection test method is difficult to detect whether the position of the overheating protection device and the setting of the protection trigger temperature are correct, resulting in damage to the protected object during the test, or the protected object can often pass the temperature protection test, but it still works because of overheating damage

In addition, it is impossible to adjust the temperature protection design method according to the existing temperature protection test results

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