CN119206972A - Asynchronous dual-factor alarm mechanism anti-theft system - Google Patents

Abstract

The present invention provides an asynchronous dual-factor alarm mechanism anti-theft system, which relates to the field of anti-theft alarm technology, including an alarm, a charging anti-theft cable device end and a commodity. After the alarm comes out, the charging anti-theft cable device end is simultaneously connected to the commodity through an asynchronous dual-factor anti-theft signal. TTL alarm logic and ADC alarm logic mechanisms are set on the alarm software. When a unidirectional jump of a TTL electrical signal or a unidirectional jump of an ADC electrical signal is detected, the alarm will not be triggered. When a TTL signal jump and an ADC signal jump are detected to exist simultaneously or asynchronously at the same time, the alarm is triggered. The asynchronous dual-factor alarm mechanism anti-theft system triggers the alarm by simultaneously detecting changes in the TTL signal and the ADC signal, thereby avoiding false alarms caused by loose connectors and the like in the traditional unidirectional detection alarm logic. The alarm is triggered only when a specific change occurs to the TTL signal and the ADC signal simultaneously or asynchronously, thereby greatly improving the accuracy of the alarm.

Description

Asynchronous double-factor alarm mechanism anti-theft system

Technical Field

The invention belongs to the technical field of anti-theft alarm, and particularly relates to an anti-theft system with an asynchronous double-factor alarm mechanism.

Background

In today's commercial environment, merchandise theft prevention is critical to retailers. The conventional anti-theft system plays a certain role in protecting goods, but its limitations are gradually revealed with the lapse of time.

At present, the common burglar alarm mainly detects a high-low level signal or an ADC (analog to digital converter) detection current signal through TTL logic in a singlechip to trigger an alarm, and the unidirectional detection alarm logic can possibly meet basic requirements during initial use. However, in practical application scenarios, especially under the condition that the connector between the commodity and the burglar alarm is frequently plugged, a loosening phenomenon is easy to occur. Such loosening may cause an unstable signal, thereby frequently triggering an alarm mechanism, resulting in a false alarm.

The false alarm not only can interfere with normal business operation and bring unnecessary trouble to store staff, and reduces the working efficiency, but also can lead customers to generate bad shopping experience. Moreover, the traditional anti-theft system has poor adaptability to the conditions of connector plugging and loosening and the like, so that the service life of anti-theft equipment can be influenced, and the equipment maintenance and replacement cost of retailers is increased.

In addition, the single detection mechanism of the traditional anti-theft system gradually looks at the increasingly complex theft means, and the anti-theft effect is not attractive. In order to cope with these problems, there is an urgent need for an antitheft system that is more reliable, stable and highly adaptable, and that can effectively avoid false alarms due to connector plugging, while improving the accuracy and effectiveness of antitheft.

Under the background, an asynchronous double-factor alarm mechanism anti-theft system is developed, so that the defects of the prior art are overcome, and a stronger guarantee is provided for commodity anti-theft.

Disclosure of Invention

In order to solve the technical problems, the invention provides an asynchronous double-factor alarm mechanism anti-theft system to solve the problems.

The asynchronous double-factor alarm mechanism anti-theft system comprises an alarm, a charging anti-theft cable equipment end and commodities, wherein the charging anti-theft cable equipment end is connected to the commodities through an asynchronous double-factor anti-theft signal after the alarm comes out, TTL alarm logic and an ADC alarm logic mechanism are arranged on alarm software, the alarm is not triggered when one-way jump of TTL electric signals or one-way jump of ADC electric signals is detected, the alarm is triggered when the existence or the asynchronous existence of the jump of the TTL electric signals is detected, the alarm can give out alarm sound, the TTL trigger alarm mode is a contact switch or other sensors for detecting signal receiving and transmitting switches, such as infrared, photosensitive and the like, the device is arranged on a main connector connected with the commodities to the alarm, and the on-duty alarm mechanism is started after the disconnection of the TTL electric signals of the commodities and the alarm is detected.

Preferably, the ADC triggering alarm mode is connected with the commodity to the alarm through the main connector, and the on-duty alarm mechanism is started after the disconnection of the ADC electric signals of the commodity and the alarm is detected.

Preferably, after the main connector is completely disconnected from the commodity or is disconnected successively, the TTL electric signal and the ADC electric signal are triggered, and the alarm gives out alarm sound.

Preferably, after the commodity end TTL detection mechanism antitheft electric signal CC1 passes through the commodity antitheft module sensor and the commodity cloth guard, the feedback electric signal is fed to the 3 rd pin of the alarm interface module through a cable, and then the electric signal is connected to the 1 st pin of the alarm module.

Preferably, the commodity end ADC detection mechanism charges and prevents burglary electric signal and is connected to VCC & GND of commodity charging end through Type-C or other connectors, and the electric signal is given alarm interface module 4 th foot through the cable and is detected partial pressure through D101, and then feeds back to alarm module 22 nd foot from ADC 1.

Preferably, the anti-theft electric signal of the commodity end TTL detection mechanism is called CC1 for short, and the ADC detection mechanism charges the anti-theft electric signal to detect ADC1.

Preferably, after the commodity end CC1 signal is closed through the sensor, the signal is fed back to the alarm interface module CC1 and then connected to the alarm module CC1, and the master control circuit receives the defense deployment signal and starts the defense deployment.

Preferably, after the commodity terminal ADC1 signal is connected with a commodity through a connector, the commodity terminal ADC1 signal is connected to VCC & GND of a commodity charging terminal through a Type-C or other connectors, an electric signal is supplied to a 4 th pin of an alarm interface module through a cable, partial pressure is detected through D101, the partial pressure is fed back to the alarm module ADC1 from the ADC1, and a main control circuit receives a defense distribution signal and starts defense distribution.

Compared with the prior art, the invention has the following beneficial effects:

1. The anti-theft accuracy is remarkably improved, namely the anti-theft system of the asynchronous double-factor alarm mechanism triggers an alarm by detecting the changes of TTL signals and ADC signals at the same time, and false alarm caused by the reason that a traditional unidirectional detection alarm logic is loose due to the plugging of a connector is avoided. The alarm can be triggered only when the TTL signal and the ADC signal are changed in a specific way simultaneously or asynchronously, so that the alarm accuracy is greatly improved. The system can more accurately identify real theft, reduce the interference of false alarm to normal operation, ensure that the anti-theft measures are more reliable and effectively protect the safety of commodities.

2. The anti-theft display life of the commodity is prolonged, and the conventional anti-theft system can cause frequent maintenance and replacement due to the problems of false alarm and the like, so that the anti-theft display life of the commodity is influenced. The system adopts an advanced asynchronous double-factor alarm mechanism, so that unnecessary system intervention and equipment loss caused by false alarm are reduced. The stable and accurate alarm mechanism enables the anti-theft equipment to stably operate for a long time, and reduces the failure rate of the equipment, thereby prolonging the service life of the anti-theft display of commodities and saving the cost of equipment updating and maintenance for merchants.

3. The system has the advantages of simple structure, standardized connection mode and easy operation in the aspect of installation. The installation can be completed by common staff through simple training without complex wiring and professional technicians, and the labor cost and time cost of the installation are greatly reduced. In terms of maintenance, due to the high stability of the system, the failure rate is low, and the need for frequent maintenance and replacement of equipment is reduced. Meanwhile, due to the modularized design of the system, fault detection and component replacement are more convenient, and technical difficulty and cost of maintenance are reduced.

4. The store operation efficiency is improved, and false alarms of the traditional anti-theft system can cause store personnel to frequently deal with false alarms, so that the work energy of the store personnel is dispersed, and normal sales and service work is influenced. The accurate and reliable alarm mechanism of the system reduces false alarm, so that store personnel can put more time and energy into serving customers and promoting sales, and the overall operation efficiency of stores is improved. And the stable operation of the system also reduces business interruption caused by processing alarm problems, and ensures continuous operation of stores.

5. The system has the advantages of enhancing the adaptability and compatibility, and being compatible with various types of commodities and different shop environments by adopting a universal interface and a standardized design. The anti-theft system can be effectively applied to small retail stores or large markets, and valuable commodities or common commodities. Moreover, the system has good expandability, can be flexibly configured and upgraded according to the scale and the requirements of shops, meets the personalized requirements of different users, and provides an integrated anti-theft solution for various retail scenes.

6. The data security and privacy are guaranteed, and in modern commercial environments, the data security and privacy protection are very important. The system encrypts the transmitted TTL electric signals and ADC electric signals, and adopts a safe communication protocol, thereby effectively preventing signals from being stolen and tampered in the transmission process. This not only protects the anti-theft information of the merchandise, but also avoids business risks and customer privacy problems that may result from data leakage. Meanwhile, the strict hardware reliability design and software fault tolerance recovery mechanism ensure the stable operation of the system, and further ensure the safety and the integrity of data.

Drawings

FIG. 1 is a schematic diagram of a charging anti-theft cable device end of the present invention connected to a commodity simultaneously by an asynchronous two-factor anti-theft signal after an alarm comes out;

FIG. 2 is a schematic diagram of the present invention;

FIG. 3 is a diagram of the simultaneous connection of TTL electrical signals and ADC electrical signals;

FIG. 4 is a schematic diagram of TTL electrical signal disconnection & ADC electrical signal connection on duty;

FIG. 5 is a schematic diagram of TTL electrical signal connection & ADC electrical signal disconnection duty cycle;

Figure 6 is a diagram of TTL electrical signal & ADC electrical signal simultaneous off or asynchronous off alarms in the present invention.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.

Referring to fig. 1-6, with the continuous development of the retail industry, the anti-theft system plays a vital role in protecting the security of goods. However, the conventional anti-theft alarm mechanism gradually exposes some problems in practical application, such as false alarm caused by loose plug of the connector. In order to solve the problems, an innovative asynchronous double-factor alarm mechanism anti-theft system is provided, reliability and stability of the anti-theft system are remarkably improved through unique design and technical means, the anti-theft system comprises an alarm, a charging anti-theft cable device end and commodities, the charging anti-theft cable device end is simultaneously connected to the commodities through asynchronous double-factor anti-theft signals after the alarm comes out, TTL alarm logic and ADC alarm logic mechanisms are arranged on alarm software, the alarm is not triggered when one-way jump of TTL electric signals or one-way jump of ADC electric signals is detected, the alarm is triggered when the jump of TTL signals and the jump of ADC signals are detected to exist simultaneously or asynchronously exist simultaneously, the alarm can give out alarm sounds, the TTL trigger alarm modes are sensors of a contact switch or other detection signal receiving and transmitting switches, such as infrared and photosensitive, the device is arranged on a main connector connected with the commodities, and the watch-dog alarm mechanism is started after the TTL electric signals of the commodities and the alarms are detected to be disconnected.

The alarm is a core component of the whole anti-theft system and is responsible for monitoring and judging whether to trigger an alarm. The inside of the anti-theft charging cable device comprises a complex circuit and software logic, various signals from the anti-theft charging cable device end and the commodity end can be processed, and the signal processing unit is responsible for receiving and analyzing TTL (transistor-transistor logic) electric signals and ADC (analog-to-digital converter) electric signals and judging according to preset alarm logic. The high-performance microprocessor is adopted, and the alarm sounding unit has the characteristics of quick data processing capability and low power consumption, and can sound and have obvious alarm effect when meeting alarm conditions. A speaker or a buzzer with high decibel is usually adopted, and the device has the function of adjusting volume, and the storage unit is used for storing data such as configuration parameters, alarm records and the like of the system. The non-volatile memory is adopted to ensure that data cannot be lost under the condition of power failure.

The charging anti-theft cable equipment end plays a role of connecting the alarm and the commodity, and is simultaneously responsible for transmitting anti-theft related electric signals, the cable material is made of wear-resistant, stretch-resistant and good-conductivity materials, such as copper core cables, and is wrapped with an anti-interference shielding layer so as to ensure stability of signal transmission, and the interface design adopts a standardized interface, such as USBType-C or other universal interfaces, so that compatibility with different types of commodities and the alarm is ensured. The interface is provided with the design of preventing loosening and oxidation, improves the reliability of connection.

The commodity is used as a protection object of the anti-theft system, effective connection and interaction with an alarm and a charging anti-theft cable device end are needed, and the anti-theft module is built in the commodity and comprises a TTL detection mechanism and a related sensor and circuit of an ADC detection mechanism. The connection state between the commodity and the alarm can be monitored in real time, corresponding electric signals are fed back to the alarm, and the commodity identification distributes unique identification for each commodity, so that the commodity can be accurately identified when the alarm is given out, and the alarm is triggered.

When the commodity is ready for anti-theft and anti-theft arrangement, the charging anti-theft cable equipment end is connected to the commodity. At this time, the TTL detection mechanism of the commodity end is connected with the commodity through the commodity anti-theft module sensor, and after the sensor detects the connection, the sensor transmits the feedback electric signal to the 3 rd pin of the alarm interface module through the cable. After the electric signal is processed by the interface module, the electric signal is accessed to the 1 st pin of the alarm module, and meanwhile, the ADC detection mechanism of the commodity end is used for charging the anti-theft electric signal and is connected to the VCC & GND of the commodity charging end through a Type-C or other connectors. The electric signal is transmitted to the 4 th pin of the alarm interface module through a cable, after the D101 detects the partial pressure, the electric signal is fed back to the 22 nd pin of the alarm module from the ADC1, and when the alarm module receives the defense deployment signals of the TTL detection mechanism and the ADC detection mechanism at the same time, the master control circuit confirms that the defense deployment is successful, and the system enters the on duty state.

Once the alarm gives out alarm sound, the alarm can immediately draw attention of surrounding personnel, meanwhile, an alarm signal is sent to a related monitoring system or a manager, after the monitoring system receives the alarm signal, the time, place and related commodity information of the alarm can be automatically recorded, and corresponding emergency plans are started, such as informing security personnel to go to check, lock related areas and the like, the manager can check detailed information of the alarm through the system, including identification of the commodity, type of the alarm (whether TTL signal is triggered or ADC signal is triggered or both are triggered) and the like, so that accurate judgment and processing decision can be made.

The contact switch is arranged on a main connector for connecting the commodity to the alarm, when the connector is in a normal connection state, the contact switch is in a closed state, the TTL electric signal is kept stable, if the connection between the commodity and the alarm is forcibly disconnected, the contact switch can spring to cause the jump of the TTL electric signal, the system monitors the state change of the contact switch in real time, and once the jump of the TTL electric signal is detected, the on-duty alarm mechanism is started immediately.

In addition to the contact switch, a sensor for detecting a signal receiving and transmitting switch such as infrared and photosensitive can be adopted. Taking an infrared sensor as an example, an infrared emission and receiving device is arranged on a main connector, when the connector is normally connected, the infrared signal can be normally received, the TTL electric signal is kept stable, and if the connector is disconnected, the infrared signal is blocked, so that the TTL electric signal jumps, and an alarm mechanism is triggered.

When the commodity is connected to the alarm through the main connector, the system continuously monitors the state of the ADC electric signal, when the connection between the commodity and the alarm is stable, the ADC electric signal is kept in a normal range, and if the connection is damaged, for example, the commodity is forcibly removed to cause the charge interruption, the ADC electric signal can exceed the normal range or directly disappear, so that an alarm mechanism is triggered.

The ADC electric signal transmitted from the commodity end firstly passes through the main connector to reach the 4 th pin of the alarm interface module, in the interface module, the D101 is used for detecting and dividing the voltage, the electric signal is adjusted to a range suitable for the processing of the alarm module, and the divided electric signal is fed back to the 22 nd pin of the alarm module from the ADC1 for the judgment and the processing of the alarm module.

When the anti-theft cable is installed, firstly, the installation position of the alarm is determined, and one end of the anti-theft cable is connected to a corresponding interface of the alarm to ensure firm connection, and then the other end of the cable is connected to an anti-theft module interface on a commodity, wherein the installation position of the alarm is usually selected in a place which is easy to observe and operate, such as a cashier desk or a monitoring room of a store. In the connection process, the direction and alignment of the interfaces are noted, damage caused by forced plugging is avoided, and for the condition that a plurality of commodities are required to be subjected to anti-theft protection, the commodities can be connected in series or in parallel, so that each commodity can be effectively connected with the alarm.

After the installation is completed, the system is initialized, including setting the volume of alarm sound, selecting alarm modes (such as sound, light, short message notification and the like), inputting relevant information (such as name, number, price and the like) of commodities, performing independent test on each commodity, simulating connection and disconnection conditions of the commodity and an alarm, checking whether the system can accurately detect signal change and trigger corresponding alarm, simultaneously, testing the stability and reliability of the system under different environmental conditions (such as electromagnetic interference, temperature change, humidity change and the like), ensuring that the system can work normally in various complex practical application scenes, and adjusting and optimizing relevant parameters such as adjusting threshold values of TTL and ADC signals, optimizing alarm logic and the like if the system is found to have false alarm or missing alarm conditions in the debugging process.

The alarm, the charging anti-theft cable equipment end and the commodity are regularly checked whether to be firmly connected, if loose, the alarm and the interface module are cleaned by timely tightening dust and sundries, signal transmission and normal operation of the equipment are prevented from being influenced, battery electric quantity is checked (if the alarm uses battery power supply), batteries with insufficient electric quantity are timely replaced, the system is ensured to still work normally under the condition of power failure, the system is automatically checked regularly, whether all functions are normal is checked, and whether alarm sounds are clear, signal detection is accurate or not is checked.

If false alarm occurs in the system, firstly, whether TTL and ADC signals are interfered is checked, and an external interference source is eliminated. And then checking whether the sensor and the interface are damaged, if the sensor and the interface are damaged, the sensor and the interface should be replaced in time, if the system has a leakage alarm, checking whether a signal transmission line has a broken circuit or a short circuit condition, and repairing the line fault. Meanwhile, whether the setting of the alarm module is correct or not is checked, relevant parameters are reset, and for faults which cannot be determined, professional test equipment can be used for comprehensively detecting the system, finding out fault reasons and repairing the fault.

With the continuous development of technology and the emergence of new anti-theft demands, periodic upgrades of the system are required. The upgrade content may include optimizing an alarm algorithm, adding new functions (such as integration with other security systems), improving compatibility of the system, etc., and the upgrade may be performed in an online upgrade manner, that is, downloading a new software version to the alarm for installation through a network connection. The method can also adopt an offline upgrading mode to download the upgrading file into storage equipment such as a USB flash disk and the like, then insert an alarm for upgrading, and fully test a new software version before upgrading so as to ensure the safety and stability of the upgrading process. Meanwhile, original data of the system are backed up, so that data loss in the upgrading process is prevented.

The improved signal detection accuracy can adopt more advanced sensors and detection circuits, the detection accuracy of TTL electric signals and ADC electric signals is improved, misjudgment and missed judgment conditions are reduced, the filtering and noise reduction processing of the signals are optimized, interference and noise in the signals are removed, and the quality and stability of the signals are improved.

The asynchronous double-factor alarm mechanism anti-theft system solves the problems existing in the traditional anti-theft system through innovative design and technical means, and improves the reliability and stability of the anti-theft system. In practical application, the system can adapt to more application scenes and demands through continuous optimization and upgrading, and provides more reinforced and powerful guarantee for commodity burglary prevention. Meanwhile, with the development of technologies such as artificial intelligence and the Internet of things, a future anti-theft system is more intelligent and automatic, more accurate anti-theft detection and early warning can be realized, and the anti-theft system is used for developing and protecting the driving of retail industry.

The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (8)

1. The anti-theft system of the asynchronous double-factor alarm mechanism is characterized by comprising an alarm, a charging anti-theft cable equipment end and commodities, wherein the charging anti-theft cable equipment end is simultaneously connected to the commodities through an asynchronous double-factor anti-theft signal after the alarm comes out;

Setting TTL alarm logic and ADC alarm logic mechanism on the alarm software, detecting TTL electric signal one-way jump or ADC electric signal one-way jump and not triggering alarm, triggering alarm when detecting TTL signal jump and ADC signal jump exist simultaneously or asynchronously, and making alarm sound by the alarm;

the TTL triggering alarm mode is a contact switch or other sensor for detecting a signal receiving and transmitting switch, such as infrared, photosensitive and the like, the device is arranged on a main connector connected with the commodity to the alarm, and an on-duty alarm mechanism is started after the disconnection of the TTL electric signal of the commodity and the alarm is detected.

2. The asynchronous two-factor alarm mechanism anti-theft system according to claim 1, wherein the ADC triggering alarm mode connects the commodity to the alarm through the main connector, and the on-duty alarm mechanism is started after detecting that the commodity is disconnected from the ADC electrical signal of the alarm.

3. The asynchronous two-factor alarm mechanism anti-theft system according to claim 2, wherein after the main connector is completely disconnected from the commodity or is disconnected successively, the TTL electrical signal and the ADC electrical signal are triggered, and the alarm sounds an alarm.

4. The anti-theft system of an asynchronous two-factor alarm mechanism according to claim 3, wherein after the anti-theft electric signal CC1 of the commodity end TTL detection mechanism is distributed with the commodity through the commodity anti-theft module sensor, the feedback electric signal is fed to the 3 rd pin of the alarm interface module through a cable, and the electric signal is connected to the 1 st pin of the alarm module.

5. The anti-theft system of an asynchronous double-factor alarm mechanism according to claim 4, wherein the charging anti-theft electric signal of the commodity end ADC detection mechanism is connected to VCC & GND of the commodity charging end through a Type-C or other connectors, the electric signal is supplied to the 4 th pin of the alarm interface module through a cable, the voltage division is detected through D101, and then the electric signal is fed back to the 22 nd pin of the alarm module from ADC 1.

6. The anti-theft system of claim 5, wherein the commodity-end TTL detection mechanism is abbreviated as CC1, and the ADC detection mechanism is used for charging the anti-theft electric signal to detect ADC1.

7. The anti-theft system of an asynchronous double-factor alarm mechanism according to claim 6, wherein after the commodity end CC1 signal is closed by the sensor, the signal is fed back to the alarm interface module CC1 and then connected to the alarm module CC1, and the master control circuit receives the arming signal and starts arming.

8. The anti-theft system of an asynchronous double-factor alarm mechanism according to claim 7, wherein after the commodity end ADC1 signal is connected with the commodity through a connector, the commodity end ADC1 signal is connected with VCC & GND of a commodity charging end through a Type-C or other connectors, an electric signal is fed to a 4 th pin of an alarm interface module through a cable, the voltage division is detected through D101, the voltage division is fed back to the alarm module ADC1 from the ADC1, and a master control circuit receives a defense distribution signal and starts defense distribution.