Alarm module with adjustable frequency

Abstract

The utility model relates to the technical field of alarms, in particular to a frequency-adjustable alarm module, which is characterized in that a master control module is respectively in communication connection with a frequency generation module and an alarm execution module, the frequency generation module is in communication connection with an infrared transceiver module, and the infrared transceiver module is in communication connection with the alarm execution module. And the power supply management module is respectively and electrically connected with the main control module, the infrared transmitting and receiving module and the alarm execution module. According to the utility model, different components in the alarm, the infrared transmitter and the wireless charging PCB are modularly divided according to functions and effects of the components; the functions of unlocking, multi-level alarming and frequency switching achieved based on the communication relation are highlighted, a more flexible and effective alarming mode is achieved, the defects of a traditional alarm are overcome, and high market application value is achieved.

Description

Technical Field

[0001] This utility model relates to the field of alarm technology, specifically an adjustable frequency alarm module. Background Technology

[0002] In the event of an emergency, the burglar alarm device can alert the staff on duty to the location of the incident through sound and light alarms or electronic maps, enabling them to take rapid emergency measures.

[0003] Existing alarm systems, which use fixed single-frequency signals such as 315MHz or 433MHz, are susceptible to electromagnetic interference from the environment, leading to false alarms or missed detections. Furthermore, existing unlocking methods are relatively simple, generally using physical keys or combination locks, which pose significant security risks and are cumbersome to operate. In addition, existing alarm systems lack sufficient alarm levels, relying solely on sound or light alarms and failing to respond according to the severity of the threat, resulting in inaccurate judgments.

[0004] Based on the above reasons, this utility model designs an adjustable frequency alarm module. By integrating infrared encryption and decryption, multi-frequency switching and a three-level alarm mechanism, it can significantly improve the anti-interference ability, security and response flexibility of the alarm. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an adjustable frequency alarm module. By integrating infrared encryption and decryption, multi-frequency switching and a three-level alarm mechanism, the anti-interference ability, security and response flexibility of the alarm can be significantly improved.

[0006] To achieve the above objectives, this utility model provides an adjustable frequency alarm module, including a main control module, a frequency generation module, an infrared transceiver module, an alarm execution module, and a power management module. The main control module is communicatively connected to the frequency generation module and the alarm execution module, the frequency generation module is communicatively connected to the infrared transceiver module, the infrared transceiver module is communicatively connected to the alarm execution module, and the power management module is electrically connected to the main control module, the infrared transceiver module, and the alarm execution module.

[0007] The power management module includes a wireless charging PCB, on which a wireless charging transmitter, a CPS8500 chip, and a CPS1001 chip are mounted.

[0008] The CPS8500 and CPS1001 chips are step-down chips.

[0009] The wireless charging transmitter communicates with the alarm via a wireless charging receiver.

[0010] The alarm includes an infrared transceiver, a buzzer, a frequency adjustment chip, and a wireless charging receiver.

[0011] The alarm execution module includes a metal wire, a buzzer, and an unlocker.

[0012] The unlocker communicates with the infrared transmitter.

[0013] Compared with existing technologies, this utility model modularizes the alarm, infrared transmitter, and wireless charging PCB according to their functions and effectiveness, highlighting the functions of unlocking, multi-level alarm, and frequency switching based on their communication relationships. This achieves a more flexible and effective alarm method, avoids the shortcomings of traditional alarms, and has high market application value. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the communication module relationships of this utility model.

[0015] Figure 2 This is a schematic diagram of the structural module relationship of this utility model.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1 is the main control module, 2 is the frequency generation module, 3 is the infrared transceiver module, 4 is the alarm execution module, 5 is the power management module, 6 is the infrared transmitter, 7 is the alarm, 8 is the wireless charging PCB, 9 is the infrared receiver / transmitter, 10 is the buzzer, 11 is the frequency adjustment chip, 12 is the wireless charging receiver, 13 is the wireless charging transmitter, 14 is CPS1001, and 15 is CPS8500. Detailed Implementation

[0018] The present invention will now be further described with reference to the accompanying drawings.

[0019] See Figure 1 This utility model provides an adjustable frequency alarm module, including a main control module 1, a frequency generation module 2, an infrared transceiver module 3, an alarm execution module 4, and a power management module 5. The main control module 1 is communicatively connected to the frequency generation module 2 and the alarm execution module 4, the frequency generation module 2 is communicatively connected to the infrared transceiver module 3, the infrared transceiver module 3 is communicatively connected to the alarm execution module 4, and the power management module 5 is electrically connected to the main control module 1, the infrared transceiver module 3, and the alarm execution module 4.

[0020] The power management module 5 includes a wireless charging PCB8, on which a wireless charging transmitter 13, a CPS8500 chip 15, and a CPS1001 chip 14 are installed.

[0021] CPS8500 chip 15 and CPS1001 chip 14 are step-down chips.

[0022] The wireless charging transmitter 13 communicates with the alarm 7 via the wireless charging receiver 12.

[0023] The alarm 7 includes an infrared transceiver 9, a buzzer 10, a frequency adjustment chip 11, and a wireless charging receiver 12.

[0024] The alarm execution module 4 includes a metal wire, a buzzer 10, and an unlocker.

[0025] The unlocker is connected to the infrared transmitter 6.

[0026] Working principle:

[0027] This invention requires minimal debugging during use. The main control module 1 is responsible for frequency switching, infrared signal decoding, and alarm logic control. The main control module 1 can monitor ambient noise intensity in real time by acquiring RSSI values ​​via an ADC. When the signal-to-noise ratio of the 8.2MHz channel is <15dB, it automatically switches to the 38kHz frequency band. Furthermore, an FIR bandpass filter is embedded within its internal MCU, with a cutoff frequency of ±5% of the target frequency, to suppress out-of-band interference.

[0028] Frequency generation module 2 uses a programmable waveform generator, supporting dual-band output of 8.2MHz and 38kHz, and communicates with the main control module 1 via an SPI interface. The user sends commands through the controller, and the main control module 1 writes the target frequency value (8.2MHz or 38kHz) to the chip within frequency generation module 2. Different frequencies are suitable for different application scenarios.

[0029] 8.2MHz mode: Used for short-range, high-penetration scenarios (such as monitoring metal equipment cabinets), with FSK signal modulation.

[0030] 38kHz mode: Adapted to infrared communication frequency bands, used for unlocking signal reception and alarm triggering in anti-interference environments.

[0031] Meanwhile, the frequency generation module 2 has a built-in temperature-compensated crystal oscillator (TCXO) with a frequency error of <±50ppm, ensuring signal stability.

[0032] The infrared transceiver module 3 includes an infrared transmitter 6 and an infrared receiver 9. It enables communication between the infrared transmitter 6 and the unlocking device inside the alarm 7, and is also responsible for determining whether to unlock. It works in conjunction with the alarm execution module 4 to achieve multi-level alarm functionality. The unlocking process is as follows: the infrared transmitter 6 transmits a 38kHz carrier frequency. When the transmit switch is pressed, it transmits an unlocking signal. After the infrared receiver 9 of the alarm 7 receives the signal, the unlocking device receives the unlocking signal, causing the internal motor to reverse 45 degrees to unlock. If the locking pin is not removed within 5 seconds after unlocking, the device relocks, and the buzzer sounds twice out of 10 beeps.

[0033] The alarm execution module 4 integrates a buzzer 10, a locking wire (metal wire), and a magnetic rod. Combined with the unlocking device inside the alarm 7, it enables three-level alarm operation.

[0034] Level 1 alarm: When the locking pin is cut, buzzer 10 will sound continuously.

[0035] Level 2 alarm: If the card pin is forcibly pulled out without receiving a signal from the unlocker, buzzer 10 will sound continuously.

[0036] Level 3 alarm: When passing through the sensor door with the unlocker in the locked state, buzzer 10 will sound continuously.

[0037] In using this invention, firstly, a suitable alarm frequency needs to be selected based on the installation environment and usage requirements. The alarm frequency is adjusted by controlling the output frequency of the oscillator through programming. Next, the communication and wireless charging relationships between the various modules need to be connected and debugged. During debugging, it is ensured that each module can accurately receive and process the unlock signal, and that the three-level alarm module can trigger corresponding alarm responses under different security states. Finally, functional and performance tests are performed on the entire alarm system to ensure that all functions are normal and performance is stable.

[0038] The above are merely preferred embodiments of this utility model, intended only to aid in understanding the method and core concept of this application. The scope of protection of this utility model is not limited to the above embodiments; all technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the scope of protection of this utility model.

[0039] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] This invention addresses the shortcomings of existing alarms, such as limited alarm modes, insecure unlocking methods, and unstable frequency signals. By modularizing the different components within the alarm, infrared transmitter, and wireless charging PCB according to their functions and effectiveness, it highlights the unlocking, multi-level alarm, and frequency switching functions achieved through their communication relationships. This results in a more flexible and effective alarm method with high market application value.

Claims

1. A frequency-adjustable siren module, characterized by, Including host module (1), frequency generating module (2), infrared transceiver module (3), alarm execution module (4) and power management module (5), the host module (1) is connected with frequency generating module (2), alarm execution module (4) communication respectively, frequency generating module (2) is connected with infrared transceiver module (3) communication, infrared transceiver module (3) is connected with alarm execution module (4) communication, power management module (5) is connected with host module (1), infrared transceiver module (3) and alarm execution module (4) electricity respectively; The power management module (5) includes wireless charging PCB (8), the wireless charging PCB (8) is installed with wireless charging transmitter (13), CPS8500 chip (15) and CPS1001 chip (14); The wireless charging transmitter (13) is connected with alarm (7) communication through wireless charging receiver (12); The alarm (7) includes infrared interface transmitter (9), buzzer (10), frequency adjustment chip (11) and wireless charging receiver (12) in; The alarm execution module (4) includes metal wire, buzzer (10) and unlocker; The unlocker is connected with infrared transmitter (6) communication.

2. The frequency adjustable alarm module of claim 1, wherein, The CPS8500 chip (15) and CPS1001 chip (14) are step-down chips.

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