A safety protection circuit
A safety protection circuit and circuit technology, applied in emergency protection circuit devices, circuit devices, automatic disconnection emergency protection devices, etc., can solve problems such as safety accidents, load damage, component damage, etc., and achieve the effect of improving safety.
A safety protection circuit and circuit technology, applied in emergency protection circuit devices, circuit devices, automatic disconnection emergency protection devices, etc., can solve problems such as safety accidents, load damage, component damage, etc., and achieve the effect of improving safety.
CN111404115BActive Publication Date: 2020-09-01NEW UNITED RAIL TRANSIT TECH
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[0031] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0032] see figure 1 and figure 2 ,in, figure 1 It shows a schematic structural diagram of a safety protection circuit provided by an embodiment of the present application, figure 2 A schematic structural diagram of another safety protection circuit provided by the embodiment of the present application is shown. A safety protection circuit provided in an embodiment of the present application may include:
[0033] A temperature detection circuit 1, used to obtain the temperature...
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The application discloses a safety protection circuit, including: a temperature detection circuit, used to obtain the temperature of the load; a soft control module connected to the temperature detection circuit, used to control the load by changing the temperature when the temperature is greater than the preset temperature threshold The start-stop control signal is used to control the load to stop running; the hard control module connected to the temperature detection circuit is used to cut off the power supply line for the load when the temperature is greater than the preset temperature threshold, so as to control the load to stop running. The above technical solution disclosed in this application uses a temperature detection circuit to detect the temperature of the load, and uses a soft control module to control the load to stop running through a control signal when the temperature of the load is greater than the preset temperature threshold, so as to realize the over-temperature protection of the load from the aspect of software , using the hard control module to cut off the power line supplying power to the load when the temperature of the load is greater than the preset temperature threshold, so as to realize the over-temperature protection of the load from the hardware aspect, thereby improving the safety of the load and related devices.
Description
technical field [0001] The present application relates to the technical field of load safety protection, and more specifically, to a safety protection circuit. Background technique [0002] During the operation of loads (such as indicator lights, contactors, relays, electric valves, etc.), their internal temperature may change with time or other factors. When the temperature is higher than a certain value, it will not only cause Damage to the load may cause damage to other components, and may even lead to safety accidents. [0003] To sum up, how to protect the load from over-temperature so as to improve the safety of the load and related devices is a technical problem to be solved urgently by those skilled in the art. Contents of the invention [0004] In view of this, the purpose of this application is to provide a safety protection circuit for over-temperature protection of the load, so as to improve the safety of the load and related devices. [0005] In order to ach...
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Patent Timeline
01 Sep 2020
Publication
CN111404115B
- IPC
- H02H5/04; H02H1/00; H02M3/335
- CPC
- H02H1/0007; H02H5/041; H02M3/33569
- Inventors
- 许杰; 周立成