Hardware protection circuit and method for preventing fusion fault
A hardware protection and circuit technology, applied in the field of circuits, can solve the problems of easy heat accumulation, increased CPU power consumption, melting accidents, etc.
Inactive Publication Date: 2017-08-04
GUANGDONG INSPUR BIG DATA RES CO LTD
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[0002] With the improvement of the overall performance of computer technology, the operating frequency of each component is getting higher and higher, and the power consumption of the CPU increases accordingly. Especially for notebook computers and some small mobile terminal products, heat is easy to accumulate and cause some hardware failures , causing melting accidents in severe cases, and even potential safety hazards
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[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without making creative efforts.
[0020] In the hardware protection line, it is very important for the system to know the temperature of the CPU at all times. Therefore, the Thermal Sensor that detects the temperature of the CPU is placed next to it to monitor the temperature of the CPU in real time. PSOC (Programmable System-On-Chip, programmable system on chip) reads the temperature of the CPU every 100ms through the system management bus SMBus, as attached figure 1 shown. In case of abnormal high temperature and the temperature value read by PSOC reach...
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The invention provides a hardware protection circuit and method for preventing a fusion fault. The method includes the steps that a system on a programmable chip reads the temperature of a CPU through a thermosensitive element and sends a protection signal to a protection circuit when the temperature of the CPU exceeds the preset threshold value to pull down a power supply end signal, and a source of a power-on sequence is turned down to protect equipment. The hardware protection circuit comprises a filter circuit part which is composed of resistors connected in parallel and ground and capacitors, it is prevented that abnormal signals or noise signals disturb the protection line to cause abnormal shutdown, the filter circuit optimizes the hardware protection circuit, and therefore the protection circuit is low in energy consumption and capable of protecting equipment safety in real time.
Description
technical field [0001] The invention relates to the technical field of circuits, in particular to a hardware protection circuit and method for preventing melting faults. Background technique [0002] With the improvement of the overall performance of computer technology, the operating frequency of each component is getting higher and higher, and the power consumption of the CPU increases accordingly. Especially for notebook computers and some small mobile terminal products, heat is easy to accumulate and cause some hardware failures , In severe cases, it will cause a melting accident, and even have a safety hazard. Therefore, the design of the notebook must consider the problems caused by overheating. When the temperature of the notebook is too high, the following three methods are usually adopted: cut off the operation of the device, reduce the performance of the device, or improve the ventilation and heat dissipation conditions. The hardware protection circuit will start ...
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Login to View More IPC IPC(8): G06F21/81
CPCG06F21/81
Inventor 崔博薛广营
Owner GUANGDONG INSPUR BIG DATA RES CO LTD