an alarm circuit
An alarm circuit and circuit technology, applied in the electronic field, can solve the problems of high cost, high price, difficulty in ensuring safety and stability, etc., and achieve the effect of simple structure and low cost
Active Publication Date: 2017-02-08
OCEANKING DONGGUAN LIGHTING TECH +2
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Problems solved by technology
During the use of the lamp, as the continuous use time prolongs, its temperature will become higher and higher. When the temperature is too high or the lamp continues to work at a high temperature, its safety and stability cannot be guaranteed, and it is easy to be damaged.
In the prior art, a dedicated temperature sensor is used to detect the temperature, which is expensive and costly
Method used
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[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0024] Please refer to figure 1 , is a connection schematic diagram of the first embodiment of the alarm circuit of the present invention. In this embodiment, the circuit includes: a sensing module 1 , a control module 2 , a switch module 3 and an alarm module 4 .
[0025] The sensing module 1 is used to output a corresponding voltage signal according to the temperature in the monitoring area, and the sensing module 1 includes a first current limiting resistor 11, ...
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The embodiment of the invention discloses an alarm circuit, which comprises a sensing module, a control module, a switching module, and an alarm module, wherein the sensing module is used for outputting corresponding voltage signals according to temperature in a monitoring region; the control module is used for receiving the voltage signals outputted by the sensing module and outputting corresponding control signals when the temperature in the monitoring region rises to enable the value of the voltage signal to reach the threshold; one end of the switching module is connected with the control module and the other end is grounded, and is used for receiving the control signals outputted by the control module and conducting the circuit; and one end of the alarm module is connected with the switching module and the other end is connected with the positive electrode of the power supply, and is used for giving an alarm to remind a user when conduction of the control signal is received by the switching module. When the alarm circuit of the invention is adopted, the corresponding control signals are formed according to the temperature in the monitoring region, an alarm is automatically given to remind the user when the threshold temperature arrives, the circuit cost is low, and the circuit is simple and easy to use.
Description
technical field [0001] The invention relates to the field of electronics, in particular to an alarm circuit. Background technique [0002] The safety and stability of lamps are very important and have a very important impact on people's daily life and work. During the use of the lamp, as the continuous use time prolongs, its temperature will become higher and higher. When the temperature is too high or the lamp continues to work at a high temperature, its safety and stability cannot be guaranteed, and it is easy to be damaged. In the prior art, a dedicated temperature sensor is used to detect the temperature, which is expensive and expensive. Contents of the invention [0003] The technical problem to be solved by the embodiments of the present invention is to provide an alarm circuit. The corresponding control signal can be formed according to the temperature in the monitoring area. When the threshold temperature is reached, an automatic alarm will remind the user. The ...
Claims
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IPC IPC(8): G01K7/01
Inventor 周明杰吕亚鹏
Owner OCEANKING DONGGUAN LIGHTING TECH