Alarm control device
By designing an alarm control device including dry circuit, branch circuit, photoresistor, transistor, buzzer and relay, the complexity and incomprehensible problems of existing self-locking circuits are solved, and the effect of simplifying the circuit structure and self-locking function is achieved.
Patent Information
- Application Number
- CN202422193616.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The existing self-locking circuits have problems such as many electronic components and complex systems in student learning and practical applications, which are difficult to understand and operate.
An alarm control device is designed, including a main circuit, branch circuit, photoresistor, transistor, buzzer and relay. By simplifying the circuit structure and self-locking mechanism, signal transmission, alarm function and self-locking effect are achieved.
The device simplifies the circuit structure, which facilitates students to perform welding operations through the PCB board and understand the principles of the self-locking circuit, while achieving continuous alarm and self-locking functions until the power is turned off.
Smart Images
Figure CN222994991U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of self-locking circuits, in particular to an alarm control device. Background Art
[0002] In the general technology course of ordinary high school, when students study electronic control systems, it is difficult for them to understand self-locking circuits. In actual circuits in reality, a PCB board is generally designed according to the self-locking circuit for students to perform soldering operations through the PCB board, so as to understand self-locking. However, the existing self-locking circuits contain relatively many electronic components and the self-locking systems are complex, which is not convenient for students to understand. Summary of the Utility Model
[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an alarm control device.
[0004] The purpose of the utility model is realized by the following technical solutions: an alarm control device, including a main circuit a, one end of the main circuit a is connected to a power supply, a resistor a is connected on the main circuit a, the other end of the main circuit a is connected to a branch circuit a and a branch circuit b, a resistor b is connected on the branch circuit b, the resistor b is connected to the base of a triode through a wire, a photosensitive resistor is connected on the branch circuit a, and the photosensitive resistor is in parallel with a dry reed switch. The photosensitive resistor and the emitter of the triode are both connected to a main circuit b, a buzzer is connected on the main circuit b, the positive pole of the buzzer is connected to a relay, and the dry reed switch and the relay are both electrically connected to a processing module.
[0005] Preferably, the eighth contact on the relay is connected to one end of a resistor c through a wire, the other end of the resistor c is connected to the branch circuit b, the sixth contact on the relay is connected to the positive pole of the buzzer through a wire, the ninth contact and the eleventh contact on the relay are both electrically connected to the processing module, the fourth contact and the thirteenth contact on the relay are respectively connected to the main circuit a through wires, the first contact on the relay is connected to the main circuit a through a wire, and the sixteenth contact on the relay is connected to the collector of the triode through a wire.
[0006] Preferably, it further includes a diode, one end of the diode is connected to the main circuit a through a wire, and the other end of the diode is connected to the collector of the triode through a wire.
[0007] Preferably, it further includes a resistor d and a light-emitting diode, the resistor d and the light-emitting diode are in series, and the resistor d and the light-emitting diode are both in parallel with the buzzer.
[0008] Preferably, the resistance value of the resistor a is 10 kΩ, and the resistance values of the resistor b, the resistor c and the resistor d are all 470 Ω.
[0009] Preferably, the power supply voltage is 6V.
[0010] The utility model has the following advantages: when the reed switch triggers a signal, the signal is transmitted to the processing module. The processing module then controls the relay to actuate, and the buzzer works to achieve an alarm. The relay feeds back a signal to the processing module to achieve self-locking. When the reed switch does not detect a signal, due to the circuit self-locking, the relay will still continue to work. Only by turning off the power can the alarm be stopped, thus simplifying the circuit structure and facilitating students to perform soldering operations through the PCB board and understand self-locking. Description of the Drawings
[0011] Figure 1 It is a schematic structural diagram of the internal circuit of the alarm control device;
[0012] In the figure, 1 - relay, 2 - main circuit a, 3 - diode, 4 - resistor a, 5 - resistor c, 6 - resistor b, 7 - photoresistor, 8 - reed switch, 9 - branch circuit a, 10 - branch circuit b, 11 - triode, 12 - main circuit b, 13 - light-emitting diode, 14 - buzzer, 15 - resistor d. Specific Embodiments
[0013] To make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. Usually, the components of the embodiments of the utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.
[0014] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents the selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the utility model.
[0015] It should be noted that, without conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.
[0016] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0017] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.
[0018] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0019] In this embodiment, as Figure 1 shown, an alarm control device includes a main circuit a2. One end of the main circuit a2 is connected to a power supply. Preferably, the power supply voltage is 6V. A resistor a4 is connected to the main circuit a2. The other end of the main circuit a2 is connected to a branch circuit a9 and a branch circuit b10. A resistor b6 is connected to the branch circuit b10. The resistor b6 is connected to the base of a triode 11 through a wire. A photosensitive resistor 7 is connected to the branch circuit a9, and the photosensitive resistor 7 is connected in parallel with a dry reed switch 8. The photosensitive resistor 7 and the emitter of the triode 11 are both connected to a main circuit b12. A buzzer 14 is connected to the main circuit b12. The positive pole of the buzzer 14 is connected to a relay 1. The dry reed switch 8 and the relay 1 are both electrically connected to a processing module. When the dry reed switch 8 triggers a signal, the signal is transmitted to the processing module. The processing module then controls the relay 1 to act, and the buzzer 14 works to achieve an alarm. The relay 1 feeds back a signal to the processing module to achieve self-locking. When the dry reed switch 8 does not detect a signal, because the circuit is self-locked, the relay 1 will still continue to work. Only by turning off the power supply can the alarm be stopped, thus simplifying the circuit structure and facilitating students to perform soldering operations through a PCB board and understand self-locking. In this embodiment, the processing module is an existing product, and the 555 chip is selected here.
[0020] Further, the eighth contact on the relay 1 is connected to one end of the resistor C5 through a wire, the other end of the resistor C5 is connected to the branch B10, the sixth contact on the relay 1 is connected to the positive pole of the buzzer 14 through a wire, the ninth and eleventh contacts on the relay 1 are both electrically connected to the processing module, the fourth and thirteenth contacts on the relay 1 are respectively connected to the main circuit A2 through wires, the first contact on the relay 1 is connected to the main circuit A2 through a wire, and the sixteenth contact on the relay 1 is connected to the collector of the triode 11 through a wire. Still further, it further includes a resistor D15 and a light-emitting diode 13. The resistor D15 and the light-emitting diode 13 are connected in series, and both the resistor D15 and the light-emitting diode 13 are connected in parallel with the buzzer 14. Preferably, the resistance value of the resistor A4 is 10 kΩ, and the resistance values of the resistor B6, the resistor C5, and the resistor D15 are all 470 Ω. Specifically, when the reed switch 8 triggers a signal, the signal is transmitted to the processing module. The processing module then controls the sixth and eighth contacts on the relay 1 to act, and then the buzzer 14 and the light-emitting diode 13 work to achieve audible and visual alarms. The ninth and eleventh contacts on the relay 1 feed back signals to the processing module to achieve self-locking.
[0021] In this embodiment, it further includes a diode 3. One end of the diode 3 is connected to the main circuit A2 through a wire, and the other end of the diode 3 is connected to the collector of the triode 11 through a wire.
[0022] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. An alarm control device, characterized in that: The invention comprises a trunk a (2), one end of the trunk a (2) being connected to a power supply, the trunk a (2) being connected to a resistor a (4), the other end of the trunk a (2) being connected to a branch a (9) and a branch b (10), the branch b (10) being connected to a resistor b (6), the resistor b (6) being connected to a base of a triode (11) through a wire, the branch a (9) being connected to a photoresistor (7), the photoresistor (7) being connected to a reed switch (8) in parallel, the emitters of the photoresistor (7) and the triode (11) being connected to the trunk b (12), the trunk b (12) being connected to a buzzer (14), the positive electrode of the buzzer (14) being connected to a relay (1), the reed switch (8) and the relay (1) being both electrically connected to a processing module.
2. The alarm control device according to claim 1, characterized in that: The eighth contact on the relay (1) is connected to one end of the resistor c (5) through a wire, the other end of the resistor c (5) is connected to the branch b (10), the sixth contact on the relay (1) is connected to the positive electrode of the buzzer (14) through a wire, the ninth contact and the eleventh contact on the relay (1) are both electrically connected to the processing module, the fourth contact and the thirteenth contact on the relay (1) are respectively connected to the trunk a (2) through a wire, the first contact on the relay (1) is connected to the trunk a (2) through a wire, and the sixteenth contact on the relay (1) is connected to the collector of the transistor (11) through a wire.
3. The alarm control device according to claim 2, characterized in that: It also comprises a diode (3), one end of which is connected to the trunk a (2) via a wire, and the other end of which is connected to the collector of the triode (11) via a wire.
4. The alarm control device according to claim 3, characterized in that: It also includes a resistor d (15) and a light emitting diode (13), wherein the resistor d (15) and the light emitting diode (13) are connected in series, and the resistor d (15) and the light emitting diode (13) are both connected in parallel with the buzzer (14).
5. The alarm control device according to claim 4, characterized in that: The resistance value of the resistor a (4) is 10 kΩ, and the resistance values of the resistor b (6), the resistor c (5) and the resistor d (15) are all 470 Ω.
6. The alarm control device according to claim 5, characterized in that: The voltage of the power supply is 6V.