Mobile phone incoming call reminding device based on radio frequency detection and LED lamp state switching

Abstract

The invention discloses a mobile phone incoming call reminding device based on radio frequency detection and LED lamp state switching. The anti-eavesdropping device is used for placing a mobile phone needing anti-eavesdropping; the radio frequency detection module is arranged in the anti-eavesdropping device and is used for monitoring whether a calling signal exists or not so as to distinguish an idle state, an incoming call state and an incoming call ending state; the state judgment module is arranged in the anti-eavesdropping device, is connected with the radio frequency detection module and is used for detecting the state of the mobile phone; and the LED indicating system is arranged on the anti-eavesdropping device, is connected with the state judgment module and is used for displaying the current state of the mobile phone. The anti-eavesdropping device has the beneficial effects that whether the mobile phone has an incoming call or not can be judged through the radio frequency detection module, and the communication state of the mobile phone can be reflected in real time through the state of an LED lamp; the incoming call state can be known through a visual means in a mobile phone anti-eavesdropping environment; and practicability is enhanced while an anti-monitoring function is kept.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of information security and communication detection technology, in particular to a mobile phone incoming call reminding device based on radio frequency detection and LED light state switching. BACKGROUND

[0002] In recent years, with the rapid development of electronic technology, various digital products with recording function emerge in an endless stream; in some confidential places, criminals use various eavesdropping devices for eavesdropping, and these eavesdropping devices are extremely concealed and difficult to prevent; due to the emergence and wide application of these digital products with recording function and special eavesdropping equipment, enterprises, government departments and even individuals often encounter malicious eavesdropping and recording problems, which seriously infringes on the personal privacy of people and the confidentiality of enterprises and government departments; the common anti-eavesdropping method is to restrict the carrying of eavesdropping devices, but since most of the current mobile phones and other portable digital products have recording function, at the same time, special eavesdropping equipment is extremely concealed and difficult to detect, therefore, this anti-eavesdropping method of restricting the carrying of eavesdropping devices cannot effectively prevent eavesdropping;

[0003] In order to avoid the above situation, people designed an anti-eavesdropping device, when some private topics need to be discussed, the portable digital product can be placed in the anti-eavesdropping device, but the current anti-eavesdropping device generally uses shielding material to shield the radio frequency signal of the mobile phone, although it can achieve the purpose of anti-eavesdropping, but at the same time, the user cannot perceive the mobile phone incoming call in time, which affects the communication efficiency and cannot meet the needs of people;

[0004] In view of the above situation, it is necessary to improve the existing mobile phone anti-eavesdropping method, so that it can adapt to the needs of people for mobile phone anti-eavesdropping and incoming call reminding. SUMMARY

[0005] In order to solve the above technical problems, the present application provides a mobile phone incoming call reminding device based on radio frequency detection and LED light state switching, which comprises:

[0006] An anti-eavesdropping device for placing a mobile phone that needs to be protected from eavesdropping;

[0007] A radio frequency detection module arranged in the anti-eavesdropping device for monitoring whether there is a call signal so as to distinguish idle, incoming call and incoming call ended states;

[0008] A state judgment module arranged in the anti-eavesdropping device and connected with the radio frequency detection module for detecting the state of the mobile phone;

[0009] An LED indication system arranged on the anti-eavesdropping device and connected with the state judgment module for displaying the current state of the mobile phone.

[0010] Further supplement to the technical solution, the radio frequency detection module built-in antenna and radio frequency induction circuit are used for monitoring whether there is a calling signal in the GSM, 4G and 5G frequency bands in real time.

[0011] Further supplement to the technical solution, the radio frequency detection module adopts an envelope detection and power threshold matching mechanism to realize the response to the sudden signal and distinguish the daily background noise from the actual calling signal.

[0012] Further supplement to the technical solution, the radio frequency detection module converts the signal into a digital high-low level input to the external interrupt pin of the MCU through the voltage comparator, and is used for analyzing the envelope change and intensity of the radio frequency signal to distinguish the idle, incoming call and incoming call ended states.

[0013] Further supplement to the technical solution, the state judgment module is based on the state determination algorithm running on the microcontroller, uses a finite state machine for state conversion logic control, and is provided with a debounce mechanism to avoid misjudgment.

[0014] Further supplement to the technical solution, the finite state machine includes the following states: standby state, incoming call state and missed call state.

[0015] Further supplement to the technical solution, the trigger mechanism is arranged on the box cover of the anti-eavesdropping device and connected with the finite state machine for judging whether the user confirms the input; the finite state machine detects the effective radio frequency signal to enter the "incoming call" state, and if the user confirmation input is not received within 30 seconds, the state is changed to the "missed call" state.

[0016] Further supplement to the technical solution, the LED indication system is composed of RGB multicolor LEDs, and the brightness and stroboscopic rate are adjusted by the PWM control circuit.

[0017] Further supplement to the technical solution, in the LED indication system, the green constant light indicates the standby anti-eavesdropping state, the red fast flicker indicates that there is an incoming call, and the red constant light indicates that there is a missed call.

[0018] The beneficial effects are that the method can judge whether the mobile phone has an incoming call through the radio frequency detection module, and reflect the mobile phone communication state in real time through the LED light state, so that the incoming call state can be known through visual means in the mobile phone anti-eavesdropping environment; the device structure is simple, the corresponding real-time is fast, the compatibility is strong, the anti-eavesdropping function is maintained, and the practicability is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the composition schematic diagram of the present application. DETAILED DESCRIPTION

[0020] In order to make the technical solution more clear for those skilled in the art, the following will be combined with the drawingsFigure 1 The technical solutions of the application are described in detail as follows:

[0021] A mobile phone incoming call reminding device based on radio frequency detection and LED light state switching, comprising:

[0022] An anti-eavesdropping device for placing a mobile phone that needs to be protected from eavesdropping;

[0023] A radio frequency detection module: arranged in the anti-eavesdropping device for monitoring whether there is a call signal so as to distinguish idle, incoming call and incoming call ended states;

[0024] A state judgment module: arranged in the anti-eavesdropping device and connected with the radio frequency detection module for detecting the state of the mobile phone;

[0025] An LED indication system: arranged on the anti-eavesdropping device and connected with the state judgment module for displaying the current state of the mobile phone;

[0026] In the application, whether the mobile phone has an incoming call is judged by the radio frequency detection module, and the communication state of the mobile phone is reflected in real time by the LED indication system.

[0027] The radio frequency detection module comprises:

[0028] A signal receiving and converting module: comprising an antenna, a low-noise amplifier, a mixer, an intermediate frequency amplifier, a synchronous detector, an analog-to-digital converter and the like, responsible for receiving a radio frequency signal and converting it into a digital signal, the built-in antenna and the radio frequency induction circuit in the technical solution are used for monitoring in real time whether there is a call signal in the GSM, 4G, 5G and the like frequency bands, and the performance and characteristics of the antenna will affect the strength and quality of the received signal.

[0029] A signal analysis module: pre-processing and feature parameter extraction are performed on the digital signal to provide data support for subsequent effectiveness judgment; the converted digital signal is pre-processed, such as filtering, noise reduction and the like, and then various feature parameters, such as power, frequency, phase, modulation mode and the like, are extracted; through a pre-set algorithm and model, these feature parameters are analyzed and judged to evaluate the quality, effectiveness and legality of the radio frequency signal and the like.

[0030] A signal effectiveness judgment module: each feature parameter is standardized, and the effectiveness of the signal is judged through a pre-set signal effectiveness judgment algorithm to obtain a wireless radio frequency signal effectiveness judgment result; in the application, the radio frequency detection module adopts an envelope detection and power threshold matching mechanism to realize the response to a sudden signal and distinguish daily background noise from an actual call signal.

[0031] A storage module: used for storing the encrypted detection result for subsequent query, statistics and analysis.

[0032] The radio frequency detection module is an external interrupt pin of the MCU to which the signal is converted into digital high and low level by a voltage comparator, and is used for analyzing the envelope change and intensity of the radio frequency signal to distinguish the idle, incoming call and end of incoming call states, and then interacts with the state judgment module.

[0033] The state judgment module is based on a state judgment algorithm running on a microcontroller (such as STM32), uses a finite state machine for state transition logic control, and is provided with a debounce mechanism to avoid misjudgment. The finite state machine includes the following states: standby state, incoming call state, and missed call state. A trigger mechanism is arranged on the cover of the anti-eavesdropping device and is connected with the finite state machine for judging whether the user confirms the input. When the trigger condition is met, the trigger mechanism generates a trigger instruction and sends the trigger instruction to the finite state machine. The finite state machine detects the valid radio frequency signal to enter the "incoming call" state, and if the user confirmation input (such as opening the cover) is not received within 30 seconds, the state is changed to "missed call state".

[0034] Further, the LED indication system is composed of RGB multicolor LEDs, and is adjusted in brightness and strobe rate by a PWM control circuit. In order to facilitate human observation, the LED indication system shows the standby anti-eavesdropping state by green constant light, shows the current incoming call by red fast flicker, and shows the missed call by red constant light.

[0035] The user can know the incoming call state by visual means in the mobile phone anti-eavesdropping environment. The device has simple structure, real-time response and strong compatibility, and enhances the practicability while maintaining the anti-eavesdropping function.

[0036] The above technical solution only reflects the preferred technical solution of the present application, and some changes made by the person skilled in the art to some parts of the present application also reflect the principle of the present application and are within the protection scope of the present application.

Claims

1. A mobile phone incoming call reminding device based on radio frequency detection and LED light state switching, characterized in that, It comprises: Anti-eavesdropping device for placing the mobile phone that needs to be protected from eavesdropping; Radio frequency detection module: set in the anti-eavesdropping device for monitoring whether there is a call signal to distinguish idle, incoming call, incoming call has ended state; State judgment module: set in the anti-eavesdropping device and connected with the radio frequency detection module for detecting the state of the mobile phone; LED indication system: set on the anti-eavesdropping device and connected with the state judgment module for displaying the current state of the mobile phone.

2. The mobile phone incoming call reminding device based on radio frequency detection and LED light state switching according to claim 1, characterized in that, The radio frequency detection module built-in antenna and radio frequency induction circuit are used for real-time monitoring whether there is a call signal in GSM, 4G and 5G frequency bands.

3. The mobile phone incoming call reminding device based on radio frequency detection and LED light state switching according to claim 2, characterized in that, The radio frequency detection module adopts envelope detection and power threshold matching mechanism to realize the response to sudden signal and distinguish daily background noise from actual call signal.

4. The mobile phone incoming call reminding device based on radio frequency detection and LED light state switching according to claim 3, characterized in that, The radio frequency detection module converts the signal into digital high and low level input to the external interrupt pin of MCU through voltage comparator, which is used for analyzing the envelope change and intensity of radio frequency signal to distinguish idle, incoming call and incoming call has ended state.

5. The mobile phone incoming call reminding device based on radio frequency detection and LED light state switching according to claim 1, characterized in that, The state judgment module is based on the state determination algorithm of microcontroller running, uses finite state machine for state transition logic control, and is provided with a debounce mechanism to avoid misjudgment.

6. The mobile phone incoming call reminding device based on radio frequency detection and LED light state switching according to claim 5, characterized in that, The finite state machine includes the following states: standby state, incoming call state, and missed call state.

7. The mobile phone incoming call reminding device based on radio frequency detection and LED light state switching according to claim 6, characterized in that, The box cover of the anti-eavesdropping device is provided with a trigger mechanism connected with the finite state machine for judging whether the user confirms the input; the finite state machine detects the effective radio frequency signal to enter "incoming call" state, and if no user confirmation input is received within 30 seconds, the state is changed to "missed call state".

8. The mobile phone incoming call reminding device based on radio frequency detection and LED light state switching according to claim 1, characterized in that, The LED indication system is composed of RGB multicolor LED, which adjusts the brightness and frequency flash rate with PWM control circuit.

9. The mobile phone incoming call reminding device based on radio frequency detection and LED light state switching according to claim 8, characterized in that, In the LED indication system, green constant indicates standby anti-eavesdropping state, red fast flicker indicates that there is an incoming call, and red constant indicates that there is a missed call.

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