Inactivation system capable of inactivating anti-theft soft labels with two frequencies and inactivation method thereof

Abstract

The invention relates to an inactivation system capable of inactivating an anti-theft soft label with two frequencies. A digital signal processor can control an acoustic magnetic inactivation module and a radio frequency inactivation module to alternately emit an acoustic magnetic excitation signal of 57-59KHz and an electromagnetic wave signal of 7.9-8.5 MHz into an excitation detection induction area in a time-sharing manner; the digital signal processor can inactivate the acoustic-magnetic anti-theft soft label through the acoustic-magnetic inactivation coil, the acoustic-magnetic inactivation enabling unit, the inactivation unit and the capacitance storage unit; and the digital signal processor can inactivate the radio frequency anti-theft soft tag through the radio frequency inactivation enabling unit, the second pulse width modulation signal unit, the second MOS driving unit, the transformer unit, the radio frequency inactivation coil and the boost control unit. The device has the advantages of high integration, intelligent time division, efficient inactivation and strong adaptability.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electronic article surveillance system, and particularly relates to a deactivation system capable of deactivating two-frequency anti-theft soft labels and a deactivation method thereof. BACKGROUND

[0002] Electronic article surveillance system, EAS for short, is one of the commodity security measures widely used in the current large retail industry. The technologies applied to EAS system mainly include three kinds, namely, radio frequency technology (center frequency 8.2 MHz), acoustic magnetic technology (center frequency 58 KHz) and electromagnetic technology. Among them, the radio frequency technology and the acoustic magnetic technology are most widely used in the anti-theft system of shopping malls.

[0003] The electronic article surveillance system is mainly composed of an anti-theft antenna, an anti-theft soft label and a label deactivator. The anti-theft antenna is installed at the entrance and exit of the shopping mall for detecting whether there is an anti-theft label; the deactivator is generally installed at the cash desk of the shopping mall to deactivate the anti-theft label, so that when the goods with the label pass through the entrance and exit, the anti-theft antenna installed at the entrance and exit cannot be identified, and thus no alarm prompt is generated.

[0004] The 58 KHz acoustic magnetic anti-theft soft label is composed of a vibrating piece (generally using amorphous piece), a bias piece (generally using semi-hard magnetic piece) and a soft shell, and mechanical oscillation is generated when resonance, which has aluminum foil shielding performance and can be attached to the goods with aluminum foil packaging; the 8.2 MHz radio frequency soft label is composed of a ring-shaped aluminum coil and a capacitor, and electromagnetic oscillation is generated when resonance, which is attached to the aluminum foil packaging goods, the characteristics of the coil change, the center frequency changes, and the radio frequency soft label cannot work, but the radio frequency soft label is cheap. In order to comprehensively, economically and effectively protect the goods, the shopping mall can use both acoustic magnetic and radio frequency labels, some of which are attached with radio frequency soft labels and some of which are attached with acoustic magnetic soft labels, which are mixedly used in the shopping mall.

[0005] The existing label deactivator only has one frequency deactivation function, for example, the acoustic magnetic deactivator can only deactivate the 58 KHz acoustic magnetic anti-theft soft label; the radio frequency deactivator can only deactivate the 8.2 MHz radio frequency anti-theft soft label. If a shopping mall uses both 58 KHz acoustic magnetic anti-theft soft label and 8.2 MHz radio frequency anti-theft soft label, the shopping mall needs to purchase and use deactivators of different frequencies, which increases the purchase cost and use difficulty. That is, the shopping mall using both kinds of labels needs to configure two deactivation devices, which increases the purchase cost, occupies space and increases the operation complexity. Therefore, there is an urgent need in the field for an integrated deactivation solution capable of integrating two deactivation functions, reducing cost and simplifying operation. SUMMARY

[0006] The present application aims at overcoming the deficiencies of the prior art, and provides an inactivation system and method for two-frequency anti-theft soft tags, which are compact in structure and low in cost and can efficiently inactivate two-frequency anti-theft soft tags.

[0007] To achieve the above object, the present application adopts the following technical scheme: The application discloses a kind of inactivating system of two frequency anti-theft soft label, including acoustic magnetic inactivation module, radio frequency inactivation module, digital signal processor and alarm module, the acoustic magnetic inactivation unit can carry out digital communication with digital signal processor unit, the radio frequency inactivation unit can carry out digital communication with digital signal processor unit, the alarm unit can carry out digital communication with digital signal processor unit, the acoustic magnetic inactivation module includes first pulse width modulation signal unit, first MOS drive unit, resonant capacitor unit, acoustic magnetic inactivation coil, first signal preamplifier unit, signal filter amplifier unit, first AD sampling unit, acoustic magnetic inactivation enable unit, inactivation unit, capacitor storage unit;The acoustic magnetic inactivation module is converted into 57KHz-59KHz acoustic magnetic excitation signal that can be used to stimulate the acoustic magnetic anti-theft soft label in detection induction area by first pulse width modulation signal unit, first MOS drive unit, resonant capacitor unit, acoustic magnetic inactivation coil, 57-59KHz acoustic magnetic electromagnetic wave signal that digital signal processor outputs, the acoustic magnetic inactivation module is converted into digital acoustic magnetic tag signal that can be supplied digital signal processor operation, judgment by acoustic magnetic inactivation coil, first signal preamplifier unit, signal filter amplifier unit, first AD sampling unit, the 57KHz-59KHz damped oscillation tag signal generated by the stimulated acoustic magnetic anti-theft soft label;The radio frequency inactivation module includes direct digital frequency synthesizer, radio frequency inactivation enable unit, second pulse width modulation signal unit, second MOS drive unit, transformer unit, radio frequency inactivation coil, second signal preamplifier unit, signal modulation unit, signal demodulation unit, second AD sampling unit, boost control unit;The radio frequency inactivation module is converted into 7.9MHz-8.5MHz electromagnetic wave signal that can be used to stimulate the radio frequency anti-theft soft label in detection induction area by radio frequency inactivation enable unit, second pulse width modulation signal unit, second MOS drive unit, transformer unit, radio frequency inactivation coil, 7.9MHz-8.5MHz radio frequency operating frequency signal that direct digital frequency synthesizer outputs under the control of digital signal processor, the radio frequency inactivation module is converted into digital radio frequency tag signal that can be supplied digital signal processor operation, judgment by radio frequency inactivation coil, second signal preamplifier unit, signal modulation unit, signal demodulation unit, second AD sampling unit, the 7.9MHz-8.5MHz damped oscillation tag signal generated by the stimulated radio frequency anti-theft soft label;The digital signal processor can control acoustic magnetic inactivation module and radio frequency inactivation module to 57KHz-59KHz acoustic magnetic excitation signal and 7.9MHz-8.5MHz electromagnetic wave signal, the digital signal processor can inactivate the acoustic magnetic anti-theft soft tag through the acoustic magnetic inactivation coil, the acoustic magnetic inactivation enabling unit, the inactivation unit and the capacitor storage unit, the digital signal processor can inactivate the radio frequency anti-theft soft tag through the radio frequency inactivation enabling unit, the second pulse width modulation signal unit, the second MOS driving unit, the transformer unit, the radio frequency inactivation coil and the boost control unit.

[0008] Preferably, the acoustic magnetic inactivation module further comprises a boost charging control unit and a voltage detection unit, after completing the inactivation of the acoustic magnetic anti-theft soft tag, the digital signal processor controls the boost charging control unit to start charging the capacitor storage unit, and the voltage detection unit detects whether the capacitor charging voltage reaches the set charging voltage to determine whether to continue or stop charging.

[0009] Preferably, the acoustic magnetic inactivation module converts the 58KHz acoustic magnetic electromagnetic wave signal output by the digital signal processor into a 58KHz acoustic magnetic excitation signal capable of exciting the acoustic magnetic anti-theft soft tag in the detection induction area through the first pulse width modulation signal unit, the first MOS driving unit, the resonant capacitor unit and the acoustic magnetic inactivation coil, and the acoustic magnetic inactivation module converts the 58KHz damping oscillation tag signal generated by the excited acoustic magnetic anti-theft soft tag into a digital acoustic magnetic tag signal capable of being operated and judged by the digital signal processor through the acoustic magnetic inactivation coil, the first signal preamplification unit, the signal filter amplification unit and the first AD sampling unit; the radio frequency inactivation module converts the 8.2MHz radio frequency working frequency signal output by the direct digital frequency synthesizer under the control of the digital signal processor into an 8.2MHz electromagnetic wave signal capable of exciting the radio frequency anti-theft soft tag in the detection induction area through the radio frequency inactivation enabling unit, the second pulse width modulation signal unit, the second MOS driving unit, the transformer unit and the radio frequency inactivation coil, and the radio frequency inactivation module converts the 8.2MHz damping oscillation tag signal generated by the excited radio frequency anti-theft soft tag into a digital radio frequency tag signal capable of being operated and judged by the digital signal processor through the radio frequency inactivation coil, the second signal preamplification unit, the signal modulation unit, the signal demodulation unit and the second AD sampling unit; the digital signal processor can control the acoustic magnetic inactivation module and the radio frequency inactivation module to alternately emit the 58KHz acoustic magnetic excitation signal and the 8.2MHz electromagnetic wave signal in the detection induction area.

[0010] Preferably, the emission time of the acoustic magnetic inactivation module is 1ms-2ms, and the emission time of the radio frequency inactivation module is 1us-2us.

[0011] Preferably, the acousto-magnetic inactivation coil in the acousto-magnetic inactivation module and the radio frequency inactivation coil in the radio frequency inactivation module are mounted on the same panel and are spatially isolated from each other, and the size area of the radio frequency inactivation coil is larger than that of the acousto-magnetic inactivation coil.

[0012] Preferably, the acousto-magnetic inactivation coil is wound by multiple turns of enameled coil, and the number of turns of the enameled coil is 15-40 turns; the number of turns of the radio frequency inactivation coil is 1-4 turns.

[0013] The application discloses a deactivation method of a deactivation system capable of deactivating two-frequency anti-theft soft tags, and the method comprises the following steps: starting the deactivation system, initializing data, not emitting a 57KHz-59KHz acoustic magnetic excitation signal, receiving an environmental electromagnetic wave signal by an acoustic magnetic deactivation coil, converting the received environmental electromagnetic wave signal into a digital environmental signal through a first signal preamplification unit, a signal filtering amplification unit and a first AD sampling unit, then sending the digital environmental signal to a digital signal processor, and calculating the environmental noise by the digital signal processor, so that even if an acoustic magnetic anti-theft soft tag exists in a detection sensing area, the acoustic magnetic anti-theft soft tag will not be excited; then starting to emit the 57KHz-59KHz acoustic magnetic excitation signal, if the acoustic magnetic anti-theft soft tag exists in the detection sensing area, the acoustic magnetic deactivation module can receive a 57KHz-59KHz damped oscillation tag signal generated by the excited acoustic magnetic anti-theft soft tag, and convert the 57KHz-59KHz damped oscillation tag signal into a digital acoustic magnetic tag signal for operation and judgment of the digital signal processor, if the received digital acoustic magnetic tag signal meets the deactivation characteristic requirement, the digital signal processor controls the acoustic magnetic deactivation module to deactivate the acoustic magnetic anti-theft soft tag; then not emitting a 7.9MHz-8.5MHz electromagnetic wave signal, receiving an environmental electromagnetic wave signal by a radio frequency deactivation coil, converting the received environmental electromagnetic wave signal into a digital environmental signal through a second signal preamplification unit, a signal modulation unit, a signal demodulation unit and a second AD sampling unit, then sending the digital environmental signal to a digital signal processor, and calculating the environmental noise by the digital signal processor, so that even if a radio frequency anti-theft soft tag exists in a detection sensing area, the radio frequency anti-theft soft tag will not be excited; then starting to emit the 7.9MHz-8.5MHz electromagnetic wave signal, if the radio frequency anti-theft soft tag exists in the detection area, the radio frequency deactivation module can receive a 7.9MHz-8.5MHz damped oscillation tag signal generated by the excited radio frequency anti-theft soft tag, and convert the 7.9MHz-8.5MHz damped oscillation tag signal into a digital radio frequency tag signal for operation and judgment of the digital signal processor, if the received digital radio frequency tag signal meets the deactivation characteristic requirement, the digital signal processor controls the radio frequency deactivation module to deactivate the radio frequency anti-theft soft tag.

[0014] Preferably, after the deactivation system inactivates the acousto-magnetic anti-theft soft tag, the digital signal processor controls the boost charging control unit to boost charge the capacitor storage unit, and the voltage detection unit detects the capacitor charging voltage in real time.

[0015] The application discloses a deactivation method of a deactivation system capable of deactivating two-frequency anti-theft soft tags, and the method comprises the following steps: starting the deactivation system, initializing data, and not emitting 7.9 MHz-8.5 MHz electromagnetic wave signals first; the radio frequency deactivation coil receives electromagnetic wave signals in the environment, the electromagnetic wave signals received by the radio frequency deactivation coil are converted into digital environment signals through a second signal preamplification unit, a signal modulation unit, a signal demodulation unit and a second AD sampling unit, then the radio frequency deactivation module transmits the digital environment signals to a digital signal processor, and the digital signal processor calculates the environmental noise through operation, so that even if a radio frequency anti-theft soft tag exists in a detection sensing area, the radio frequency anti-theft soft tag cannot be excited; then the deactivation system starts to emit 7.9 MHz-8.5 MHz electromagnetic wave signals, if a radio frequency anti-theft soft tag exists in the detection area, the radio frequency deactivation module can receive 7.9 MHz-8.5 MHz damped oscillation tag signals generated by the excited radio frequency anti-theft soft tag, and the radio frequency deactivation module can convert the 7.9 MHz-8.5 MHz damped oscillation tag signals into digital radio frequency tag signals for operation and judgment of the digital signal processor; if the digital signal processor judges that the received digital radio frequency tag signals meet the deactivation characteristic requirements, the digital signal processor controls the radio frequency deactivation module to deactivate the radio frequency anti-theft soft tag; then the deactivation system does not emit 57 KHz-59 KHz acoustic magnetic excitation signals first, the acoustic magnetic deactivation coil receives electromagnetic wave signals in the environment, the electromagnetic wave signals received by the acoustic magnetic deactivation coil are converted into digital environment signals through a first signal preamplification unit, a signal filter amplification unit and a first AD sampling unit, then the acoustic magnetic deactivation module transmits the digital environment signals to a digital signal processor, and the digital signal processor calculates the environmental noise through operation, so that even if an acoustic magnetic anti-theft soft tag exists in a detection sensing area, the acoustic magnetic anti-theft soft tag cannot be excited; then the deactivation system starts to emit 57 KHz-59 KHz acoustic magnetic excitation signals, if an acoustic magnetic anti-theft soft tag exists in the detection sensing area, the acoustic magnetic deactivation module can receive 57 KHz-59 KHz damped oscillation tag signals generated by the excited acoustic magnetic anti-theft soft tag, and the acoustic magnetic deactivation module can convert the 57 KHz-59 KHz damped oscillation tag signals into digital acoustic magnetic tag signals for operation and judgment of the digital signal processor; if the digital signal processor judges that the received digital acoustic magnetic tag signals meet the deactivation characteristic requirements, the digital signal processor controls the acoustic magnetic deactivation module to deactivate the acoustic magnetic anti-theft soft tag.

[0016] Preferably, after the deactivation system for deactivating two frequency anti-theft soft tags deactivates the acousto-magnetic anti-theft soft tag, the digital signal processor controls the voltage boosting and charging control unit to boost and charge the capacitor storage unit, and the voltage detection unit detects the capacitor charging voltage in real time.

[0017] High integration: The acousto-magnetic and radio frequency deactivation functions are integrated into a single device, significantly reducing the cost of equipment procurement and the use of space in the market.

[0018] Intelligent time sharing: Through the control of the digital signal processor, the time-sharing alternating work strategy is adopted to effectively avoid the electromagnetic interference between the two different frequency circuits, ensuring the accuracy and reliability of the detection.

[0019] High-efficiency deactivation: According to the different physical characteristics of the two types of tags (acousto-magnetic tag demagnetization and radio frequency tag capacitor breakdown), the dedicated deactivation circuit and energy release method are designed, and the deactivation success rate is high.

[0020] Strong adaptability: Through the method of collecting environmental noise first and then detecting signals, environmental interference can be effectively suppressed, and the signal-to-noise ratio and the anti-false alarm ability of the system can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is a composition framework diagram of a deactivation system for deactivating two frequency anti-theft soft tags.

[0022] Fig. 2 It is a flowchart of the deactivation method of a deactivation system for deactivating two frequency anti-theft soft tags.

[0023] Fig. 3 It is a structure diagram of the winding of acousto-magnetic and radio frequency deactivation coils. DETAILED DESCRIPTION

[0024] Example 1: Refer to the attached Figs. 1-3The application discloses an inactivation system of two-frequency anti-theft soft labels, which comprises a magneto-acoustic inactivation module 100, a radio frequency inactivation module 200, a digital signal processor 300 and an alarm module 400. The magneto-acoustic inactivation module 100 can realize digital communication with the digital signal processor unit 300, the radio frequency inactivation module 200 can realize digital communication with the digital signal processor unit 300, and the alarm unit 400 can realize digital communication with the digital signal processor unit 300. The magneto-acoustic inactivation module 100 comprises a first pulse width modulation signal unit 101, a first MOS drive unit 102, a resonant capacitor unit 103, a magneto-acoustic inactivation coil 104, a first signal preamplification unit 105, a signal filter amplification unit 106, a first AD sampling unit 107, a magneto-acoustic inactivation enabling unit 108, an inactivation unit 109 and a capacitor storage unit 111. The magneto-acoustic inactivation module 100 converts the 57KHz-59KHz magneto-acoustic electromagnetic wave signal output by the digital signal processor 300 into a 57KHz-59KHz magneto-acoustic excitation signal which can be used for exciting the magneto-acoustic anti-theft soft label in the detection induction area through the first pulse width modulation signal unit 101, the first MOS drive unit 102, the resonant capacitor unit 103 and the magneto-acoustic inactivation coil 104. The magneto-acoustic inactivation module 100 converts the 57KHz-59KHz damping oscillation label signal generated by the excited magneto-acoustic anti-theft soft label into a digital magneto-acoustic label signal which can be used for calculation and judgment of the digital signal processor 300 through the magneto-acoustic inactivation coil 104, the first signal preamplification unit 105, the signal filter amplification unit 106 and the first AD sampling unit 107. The radio frequency inactivation module 200 comprises a direct digital frequency synthesizer signal unit 201, a radio frequency inactivation enabling unit 202, a second pulse width modulation signal unit 203, a second MOS drive unit 204, a transformer unit 205, a radio frequency inactivation coil 206, a second signal preamplification unit 207, a signal modulation unit 208, a signal demodulation unit 209, a second AD sampling unit 210 and a boost control unit 211. The radio frequency inactivation module 200 converts the 7.9MHz-8.5MHz radio frequency working frequency signal output by the direct digital frequency synthesizer signal unit 201 under the control of the digital signal processor 300 into a 7.9MHz-8.5MHz electromagnetic wave signal which can be used for exciting the radio frequency anti-theft soft label in the detection induction area through the radio frequency inactivation enabling unit 202, the second pulse width modulation signal unit 203, the second MOS drive unit 204, the transformer unit 205 and the radio frequency inactivation coil 206. The radio frequency inactivation module 200 converts the 7.9MHz-8.5MHz radio frequency signal generated by the excited radio frequency anti-theft soft label into a digital radio frequency label signal which can be used for calculation and judgment of the digital signal processor 300 through the radio frequency inactivation coil 206, the second signal preamplification unit 207, the signal modulation unit 208, the signal demodulation unit 209 and the second AD sampling unit 210.5MHz damped oscillation tag signal is converted into digital radio frequency tag signal which can be calculated and judged by digital signal processor 300; the digital signal processor 300 can control the acoustic-magnetic inactivation module 100 and the radio frequency inactivation module 200 to alternately emit 57KHz-59KHz acoustic-magnetic excitation signal and 7.9MHz-8.5MHz electromagnetic wave signal into the excitation detection induction area; the digital signal processor 300 can inactivate the acoustic-magnetic anti-theft soft tag through the acoustic-magnetic inactivation coil 104, the acoustic-magnetic inactivation enable unit 108, the inactivation unit 109 and the capacitor storage unit 111; the digital signal processor 300 can inactivate the radio frequency anti-theft soft tag through the radio frequency inactivation enable unit 202, the second pulse width modulation signal unit 203, the second MOS drive unit 204, the transformer unit 205, the radio frequency inactivation coil 206 and the boost control unit 211.

[0025] The acoustic-magnetic inactivation module 100 further comprises a boost charging control unit 110 and a voltage detection unit 112; after the inactivation of the acoustic-magnetic anti-theft soft tag is completed, the digital signal processor 300 controls the boost charging control unit 110 to start charging the capacitor storage unit 111, and the voltage detection unit 112 detects whether the capacitor charging voltage reaches the set charging voltage to determine whether the charging continues or stops.

[0026] The acoustic magnetic inactivation module 100 converts the 58KHz acoustic magnetic electromagnetic wave signal output by the digital signal processor 300 into a 58KHz acoustic magnetic excitation signal capable of exciting the acoustic magnetic anti-theft soft tag in the detection induction area through the first pulse width modulation signal unit 101, the first MOS drive unit 102, the resonant capacitor unit 103, and the acoustic magnetic inactivation coil 104. The acoustic magnetic inactivation module 100 converts the 58KHz damping oscillation tag signal generated by the excited acoustic magnetic anti-theft soft tag into a digital acoustic magnetic tag signal capable of being operated and judged by the digital signal processor 300 through the acoustic magnetic inactivation coil 104, the first signal preamplification unit 105, the signal filter amplification unit 106, and the first AD sampling unit 107. The radio frequency inactivation module 200 converts the 8.2MHz radio frequency working frequency signal output by the direct digital frequency synthesizer 201 under the control of the digital signal processor 300 into an 8.2MHz electromagnetic wave signal capable of exciting the radio frequency anti-theft soft tag in the detection induction area through the radio frequency inactivation enable unit 202, the second pulse width modulation signal unit 203, the second MOS drive unit 204, the transformer unit 205, and the radio frequency inactivation coil 206. The radio frequency inactivation module 200 converts the 8.2MHz damping oscillation tag signal generated by the excited radio frequency anti-theft soft tag into a digital radio frequency tag signal capable of being operated and judged by the digital signal processor 300 through the radio frequency inactivation coil 206, the second signal preamplification unit 207, the signal modulation unit 208, the signal demodulation unit 209, and the second AD sampling unit 210. The digital signal processor 300 can control the acoustic magnetic inactivation module 100 and the radio frequency inactivation module 200 to alternately emit the 58KHz acoustic magnetic excitation signal and the 8.2MHz electromagnetic wave signal in the detection induction area.

[0027] The emission time of the acoustic magnetic inactivation module 100 is 1ms-2ms, and the emission time of the radio frequency inactivation module 200 is 1us-2us.

[0028] The acoustic magnetic inactivation coil 104 in the acoustic magnetic inactivation module 100 and the radio frequency inactivation coil 206 in the radio frequency inactivation module 200 are installed on the same panel and are arranged in space isolation from each other, and the size area of the radio frequency inactivation coil 206 is larger than that of the acoustic magnetic inactivation coil 104.

[0029] The acoustic magnetic inactivation coil 104 is wound by a plurality of turns of enameled wire, and the number of turns of the enameled wire is 15-40 turns; the number of turns of the radio frequency inactivation coil 206 is 1-4 turns. Coil 1 and coil 2 are the radio frequency inactivation coil 206, and coil 3 and coil 4 are the acoustic magnetic inactivation coil 104.

[0030] The following is a working process of a deactivation system that can deactivate two-frequency anti-theft soft tags (the present application does not limit the output order of acoustic-magnetic electromagnetic waves and radio frequency electromagnetic waves): The acoustic-magnetic deactivation module 100 works, the deactivation system enters the transmission state, the digital signal processor 300 outputs a 58KHz acoustic-magnetic electromagnetic wave signal, the acoustic-magnetic electromagnetic wave signal is processed by the first pulse width modulation signal unit 101, then is amplified in power by the first MOS drive unit 102, the electromagnetic wave signal passes through the LC series resonance circuit composed of the resonance capacitor unit 103 and the acoustic-magnetic deactivation coil 104, and is transmitted through the coil loop to excite the acoustic-magnetic anti-theft soft tags in the detection sensing area, and the transmission time can be set to 1ms-2ms. After the transmission time is completed, the digital signal processor 300 enters the receiving state of the acoustic-magnetic anti-theft soft tags, if there is a tag signal excited, the tag signal will dampen and oscillate, at this time there will be a weak 58KHz dampen and oscillate tag signal in the acoustic-magnetic deactivation transmitting coil, the 58KHz dampen and oscillate tag signal passes through the first signal preamplification unit 105, which preamplifies the signal (the amplitude of the amplified signal does not change, the frequency remains unchanged). The signal then passes through the signal filter amplification unit 106, which filters the passing signal, and this filtering process ensures that the 58KHz dampen and oscillate tag signal passes through, while other frequency signals are suppressed.

[0031] Further, after the signal filter amplification unit 106 filters the signal, the signal filter amplification unit 106 amplifies the passing valid signal (58KHz dampen and oscillate tag signal) (amplifies the amplitude of the signal), the signal then passes through the first AD sampling unit 107, which converts the analog signal into a digital signal and sends it to the digital signal processor unit 300 for processing; the digital signal processor 300 performs mathematical operations on the collected digital signal to calculate the frequency and amplitude of the signal, and compares the calculated signal characteristics (frequency and amplitude characteristics) with the set acoustic-magnetic tag signal characteristics (frequency and amplitude characteristics); if the calculated signal characteristics meet the set acoustic-magnetic tag signal characteristics, the digital signal processor 300 will count, if the 58KHz dampen and oscillate tag signal is repeatedly transmitted and received and reaches the set value, at this time the digital signal processor 300 will notify the acoustic-magnetic deactivation enable unit 108, the acoustic-magnetic deactivation enable unit 108 generates a deactivation signal to control the deactivation unit 109 to open the deactivation switch, at this time the high voltage of about 500V and the large current of about 15A stored in the capacitor storage unit 111 are released instantaneously through the acoustic-magnetic deactivation coil 104, and a low-frequency high-voltage dampen and oscillation is generated, the oscillation demagnetizes the semi-hard magnetic sheet of the acoustic-magnetic anti-theft soft tag, and further deactivates the acoustic-magnetic anti-theft soft tag, at the same time, the alarm module 400 generates an audible and visual prompt.

[0032] Further, after the deactivation of the acousto-magnetic anti-theft soft tag, the digital signal processing unit 300 controls the boost charging control unit 110 to start boosting the capacitor storage unit 111, and the voltage detection unit 112 detects whether the capacitor charging voltage reaches the set charging voltage to determine whether the charging continues or stops. The deactivation system also regularly judges whether the capacitor storage unit 111 needs to be charged through the voltage detection unit 112 during operation to ensure the deactivation work.

[0033] When the radio frequency deactivation module 200 works, the deactivation system enters the transmitting state, and the digital signal processor 300 controls the DDS signal unit 201 (DDS is the abbreviation of Direct Digital Synthesizer, i.e. direct digital frequency synthesizer), and the DDS signal unit 200 outputs an 8.2MHz radio frequency working frequency signal to the second PWM signal unit 203 (i.e. the second pulse width modulation signal unit), and the digital signal processor 300 enables the transmission by controlling the radio frequency deactivation enable unit 202 to control the second PWM signal unit 203, i.e. the deactivation system can control the transmission time and frequency of the 8.2MHz radio frequency working frequency signal (radio frequency electromagnetic wave signal).

[0034] Further, the radio frequency electromagnetic wave signal is processed by the second PWM signal unit 203, and then is amplified in power by the second MOS drive unit 204. The amplified signal is then processed by the transformer unit 205, which transforms the voltage of the signal. The digital signal processor 300 finally drives the radio frequency deactivation coil 206, which emits the 8.2MHz electromagnetic wave signal through a loop to excite the radio frequency anti-theft soft tag in the detection area. The emission time can be set to 1us-2us. After the emission time is completed, the digital signal processor 300 enters the receiving state of the radio frequency anti-theft soft tag. If a radio frequency anti-theft soft tag signal is excited, the tag signal will undergo damped oscillation. At this time, there will be a weak 8.2MHz damped oscillation tag signal in the radio frequency deactivation coil 206. After the tag signal is amplified by the second signal preamplifier unit 207, it is modulated by the signal modulation unit 208. Then the signal is processed by the signal demodulation unit 209. The signal processed by the signal demodulation unit 209 is converted into a digital signal by the second AD sampling unit 210 and is sent to the digital signal processor unit 300 for processing. The digital signal processor 300 performs mathematical operations on the collected digital signal to calculate the frequency and amplitude of the digital signal. The digital signal processor 300 compares the calculated digital signal characteristics (frequency and amplitude characteristics) with the set radio frequency tag signal characteristics (frequency and amplitude characteristics) to determine whether the radio frequency anti-theft soft tag characteristics are met. If the 8.2MHz tag signal is repeatedly emitted and received and reaches the set value, the digital signal processor 300 will enter the radio frequency anti-theft soft tag deactivation step.

[0035] In the radio frequency anti-theft soft tag deactivation step, the digital signal processor 300 controls the boost control unit 211 to enter the boost operation. The boost control unit 211 increases the power supply voltage of the transformer unit 205 to generate a high voltage of about 100V and an 8.2MHz radio frequency signal with a duration of about 200us. The 8.2MHz radio frequency signal is directly released through the radio frequency deactivation coil 206 to break through the capacitor on the radio frequency anti-theft soft tag, thereby deactivating the radio frequency anti-theft soft tag. The alarm module 400 generates an audible and visual prompt.

[0036] Cyclic operation: repeatedly execute the acoustomagnetic and radio frequency detection and deactivation cycle to realize continuous detection and deactivation.

[0037] Embodiment 2: on the basis of embodiment 1. A deactivation method of a deactivation system capable of deactivating two-frequency anti-theft soft tags, comprising the following steps: the deactivation system capable of deactivating two-frequency anti-theft soft tags starts to work and starts to initialize data. First, the deactivation system capable of deactivating two-frequency anti-theft soft tags does not emit 57KHz-59KHz acoustic magnetic excitation signals. The acoustic magnetic deactivation coil 104 receives electromagnetic wave signals in the environment. The electromagnetic wave signals received by the acoustic magnetic deactivation coil 104 are converted into digital environment signals through the first signal preamplification unit 105, the signal filtering amplification unit 106, and the first AD sampling unit 107. Then, the acoustic magnetic deactivation module 100 delivers the digital environment signals to the digital signal processor 300. The digital signal processor 300 calculates the environmental noise by operation. Even if there is an acoustic magnetic anti-theft soft tag in the detection sensing area, it will not be excited. Then, the deactivation system capable of deactivating two-frequency anti-theft soft tags starts to emit 57KHz-59KHz acoustic magnetic excitation signals. If there is an acoustic magnetic anti-theft soft tag in the detection sensing area, the acoustic magnetic deactivation module 100 can receive the 57KHz-59KHz damped oscillation tag signals generated by the excited acoustic magnetic anti-theft soft tag and convert the 57KHz-59KHz damped oscillation tag signals into digital acoustic magnetic tag signals that can be operated and judged by the digital signal processor 300. If the digital signal processor 300 judges that the received digital acoustic magnetic tag signals meet the deactivation characteristic requirements, the digital signal processor 300 controls the acoustic magnetic deactivation module 100 to perform deactivation work on the acoustic magnetic anti-theft soft tag. Then, the deactivation system capable of deactivating two-frequency anti-theft soft tags does not emit 7.9MHz-8.5MHz electromagnetic wave signals. The radio frequency deactivation coil 206 receives electromagnetic wave signals in the environment. The electromagnetic wave signals received by the radio frequency deactivation coil 206 are converted into digital environment signals through the second signal preamplification unit 207, the signal modulation unit 208, the signal demodulation unit 209, and the second AD sampling unit 210. Then, the radio frequency deactivation module 200 delivers the digital environment signals to the digital signal processor 300. The digital signal processor 300 calculates the environmental noise by operation. Even if there is a radio frequency anti-theft soft tag in the detection sensing area, it will not be excited. Then, the deactivation system capable of deactivating two-frequency anti-theft soft tags starts to emit 7.9MHz-8.5MHz electromagnetic wave signals. If there is a radio frequency anti-theft soft tag in the detection area, the radio frequency deactivation module 200 can receive the 7.9MHz-8.5MHz damped oscillation tag signals generated by the excited radio frequency anti-theft soft tag and convert the 7.9MHz-8.5MHz damped oscillation tag signals into digital radio frequency tag signals that can be operated and judged by the digital signal processor 300. If the digital signal processor 300 judges that the received digital radio frequency tag signals meet the deactivation characteristic requirements, the digital signal processor 300 controls the radio frequency deactivation module 200 to perform deactivation work on the radio frequency anti-theft soft tag.5MHz damping oscillation tag signal is converted into a digital radio frequency tag signal which can be calculated and judged by the digital signal processor 300. When the digital signal processor 300 judges that the received digital radio frequency tag signal meets the inactivation characteristic requirements, the digital signal processor 300 controls the radio frequency inactivation module 200 to perform inactivation work on the radio frequency anti-theft soft tag.

[0038] After the inactivation system capable of inactivating two frequency anti-theft soft tags inactivates the acousto-magnetic anti-theft soft tag, the digital signal processor 300 controls the voltage boosting and charging control unit 110 to boost and charge the capacitor storage unit 111, and the voltage detection unit 112 detects the capacitor charging voltage in real time.

[0039] Embodiment 3: on the basis of embodiment 1. A deactivation method of a deactivation system capable of deactivating two-frequency anti-theft soft tags, comprising the following steps: the deactivation system capable of deactivating two-frequency anti-theft soft tags starts to work and starts to initialize data. First, the deactivation system capable of deactivating two-frequency anti-theft soft tags does not emit 7.9MHz-8.5MHz electromagnetic wave signals. The radio frequency deactivation coil 206 receives electromagnetic wave signals in the environment. The electromagnetic wave signals received by the radio frequency deactivation coil 206 in the environment are converted into digital environmental signals through the second signal preamplifier unit 207, the signal modulation unit 208, the signal demodulation unit 209, and the second AD sampling unit 210. Then the radio frequency deactivation module 200 delivers the digital environmental signals to the digital signal processor 300 and enables the digital signal processor 300 to calculate the environmental noise by operation. Even if there is a radio frequency anti-theft soft tag in the detection sensing area, it will not be excited. Then the deactivation system capable of deactivating two-frequency anti-theft soft tags starts to emit 7.9MHz-8.5MHz electromagnetic wave signals. If there is a radio frequency anti-theft soft tag in the detection area, the radio frequency deactivation module 200 can receive the 7.9MHz-8.5MHz damped oscillation tag signals generated by the excited radio frequency anti-theft soft tag and the radio frequency deactivation module 200 can convert the 7.9MHz-8.5MHz damped oscillation tag signals into digital signals through the second signal preamplifier unit 207, the signal modulation unit 208, the signal demodulation unit 209, and the second AD sampling unit 210. Then the radio frequency deactivation module 200 delivers the digital signals to the digital signal processor 300 and enables the digital signal processor 300 to calculate the frequency of the damped oscillation tag signals by operation.5MHz damping oscillation tag signal is converted into a digital radio frequency tag signal which can be operated and judged by the digital signal processor 300. If the digital signal processor 300 judges that the received digital radio frequency tag signal meets the inactivation characteristic requirements, the digital signal processor 300 controls the radio frequency inactivation module 200 to perform inactivation work on the radio frequency anti-theft soft tag. Then the inactivation system capable of inactivating two frequency anti-theft soft tags does not emit the 57KHz-59KHz acoustic magnetic excitation signal. The acoustic magnetic inactivation coil 104 receives the electromagnetic wave signal in the environment. The electromagnetic wave signal received by the acoustic magnetic inactivation coil 104 is converted into a digital environment signal through the first signal preamplification unit 105, the signal filtering amplification unit 106 and the first AD sampling unit 107. Then the acoustic magnetic inactivation module 100 delivers the digital environment signal to the digital signal processor 300. The digital signal processor 300 calculates the environmental noise through operation. Even if there is an acoustic magnetic anti-theft soft tag in the detection sensing area, the acoustic magnetic anti-theft soft tag will not be excited. Then the inactivation system capable of inactivating two frequency anti-theft soft tags starts to emit the 57KHz-59KHz acoustic magnetic excitation signal. If there is an acoustic magnetic anti-theft soft tag in the detection sensing area, the acoustic magnetic inactivation module 100 can receive the 57KHz-59KHz damping oscillation tag signal generated by the excited acoustic magnetic anti-theft soft tag. The acoustic magnetic inactivation module 100 can convert the 57KHz-59KHz damping oscillation tag signal into a digital acoustic magnetic tag signal which can be operated and judged by the digital signal processor 300. If the digital signal processor 300 judges that the received digital acoustic magnetic tag signal meets the inactivation characteristic requirements, the digital signal processor 300 controls the acoustic magnetic inactivation module 100 to perform inactivation work on the acoustic magnetic anti-theft soft tag.

[0040] After the inactivation system capable of inactivating two frequency anti-theft soft tags inactivates the acoustic magnetic anti-theft soft tag, the digital signal processor 300 controls the voltage boosting and charging control unit 110 to boost and charge the capacitor storage unit 111. The voltage detection unit 112 detects the capacitor charging voltage in real time.

[0041] It should be understood that the above embodiments have been described in detail in the design ideas of the present application. However, these descriptions are only simple descriptions of the design ideas of the present application, but not limitations of the design ideas of the present application. Any combination, addition or modification which does not exceed the design ideas of the present application falls within the protection scope of the present application.

Claims

1. A deactivation system capable of deactivating two-frequency anti-theft soft tags, comprising an acousto-magnetic deactivation module (100), a radio frequency deactivation module (200), a digital signal processor (300), and an alarm module (400), wherein the acousto-magnetic deactivation module (100) is capable of digital communication with the digital signal processor unit (300), the radio frequency deactivation module (200) is capable of digital communication with the digital signal processor unit (300), and the alarm unit (400) is capable of digital communication with the digital signal processor unit (300), characterized in that: The acoustomagnetic inactivation module (100) includes a first pulse width modulation signal unit (101), a first MOS driving unit (102), a resonant capacitor unit (103), an acoustomagnetic inactivation coil (104), a first signal preamplifier unit (105), a signal filtering and amplification unit (106), a first AD sampling unit (107), an acoustomagnetic inactivation enable unit (108), an inactivation unit (109), and a capacitor storage unit (111); the acoustomagnetic inactivation module (100) transmits signals through the first pulse width modulation signal unit (101), the first MOS driving unit (102), the resonant capacitor unit (103), and the acoustomagnetic inactivation coil (104). The 57-59KHz acoustomagnetic electromagnetic wave signal output by the digital signal processor (300) is converted into a 57KHz-59KHz acoustomagnetic excitation signal that can be used to excite the acoustomagnetic anti-theft soft tag in the detection sensing area. The acoustomagnetic deactivation module (100) converts the 57KHz-59KHz damped oscillation tag signal generated by the excited acoustomagnetic anti-theft soft tag into a digital acoustomagnetic tag signal that can be processed and judged by the digital signal processor (300) through the acoustomagnetic deactivation coil (104), the first signal preamplifier unit (105), the signal filter amplification unit (106), and the first AD sampling unit (107). The radio frequency deactivation module (20) 0) includes a direct digital frequency synthesizer (201), a radio frequency deactivation enable unit (202), a second pulse width modulation signal unit (203), a second MOS drive unit (204), a transformer unit (205), a radio frequency deactivation coil (206), a second signal preamplifier unit (207), a signal modulation unit (208), a signal demodulation unit (209), a second AD sampling unit (210), and a boost control unit (211); the radio frequency deactivation module (200) is connected via the radio frequency deactivation enable unit (202), the second pulse width modulation signal unit (203), the second MOS drive unit (204), the transformer unit (205), a direct digital frequency synthesizer (201), a radio frequency deactivation enable unit (202), a second pulse width modulation signal unit (203), a second MOS drive unit (204), a transformer unit (205), a direct digital frequency synthesizer (206), a direct digital frequency deactivation coil (206), a second signal preamplifier unit (207), a signal modulation unit (208), a signal demodulation unit (209), a second AD sampling unit (210), and a boost control unit (211); the radio frequency deactivation module (200) is connected via the radio frequency deactivation enable unit (202), the second pulse width modulation signal unit (203), the second MOS drive unit (204), the transformer unit (205), the second MOS drive unit (206), the second MOS drive unit (207), the second MOS drive unit (208), the second MOS drive unit (209), the second MOS drive unit (20 ...1), the second 05) The radio frequency deactivation coil (206) will convert the 7.9MHz-8.5MHz radio frequency working frequency signal output by the direct digital frequency synthesizer (201) under the control of the digital signal processor (300) into a 7.9MHz-8.5MHz electromagnetic wave signal that can be used to excite the radio frequency anti-theft soft tag in the detection sensing area. The radio frequency deactivation module (200) will use the radio frequency deactivation coil (206), the second signal preamplifier unit (207), the signal modulation unit (208), the signal demodulation unit (209), and the second AD sampling unit (210) to generate the 7.9MHz-8.5MHz electromagnetic wave signal generated by the excited radio frequency anti-theft soft tag.The 5MHz damped oscillation tag signal is converted into a digital radio frequency tag signal that can be processed and judged by the digital signal processor (300). The digital signal processor (300) can control the acoustomagnetic deactivation module (100) and the radio frequency deactivation module (200) to alternately emit 57KHz-59KHz acoustomagnetic excitation signals and 7.9MHz-8.5MHz electromagnetic wave signals into the excitation detection sensing area in a time-division manner. The digital signal processor (300) can deactivate the acoustomagnetic anti-theft soft tag through the acoustomagnetic deactivation coil (104), the acoustomagnetic deactivation enable unit (108), the deactivation unit (109), and the capacitor storage unit (111). The digital signal processor (300) can deactivate the radio frequency anti-theft soft tag through the radio frequency deactivation enable unit (202), the second pulse width modulation signal unit (203), the second MOS drive unit (204), the transformer unit (205), the radio frequency deactivation coil (206), and the boost control unit (211).

2. The deactivation system for two frequencies of anti-theft soft tags according to claim 1, characterized in that: The acoustomagnetic deactivation module (100) also includes a boost charging control unit (110) and a voltage detection unit (112). After the acoustomagnetic anti-theft soft tag is deactivated, the digital signal processor (300) controls the boost charging control unit (110) to start boost charging the capacitor storage unit (111). The voltage detection unit (112) will detect whether the capacitor charging voltage reaches the set charging voltage to determine whether charging should continue or stop.

3. The deactivation system for deactivating two frequencies of anti-theft soft tags according to claim 1, characterized in that: The acoustomagnetic deactivation module (100) converts the 58kHz acoustomagnetic electromagnetic wave signal output by the digital signal processor (300) into a 58kHz acoustomagnetic excitation signal that can be used to excite the acoustomagnetic anti-theft soft tag in the detection sensing area through the first pulse width modulation signal unit (101), the first MOS driving unit (102), the resonant capacitor unit (103), and the acoustomagnetic deactivation coil (104). The acoustomagnetic deactivation module (100) converts the 58kHz damped oscillation tag signal generated by the excited acoustomagnetic anti-theft soft tag into a digital acoustomagnetic tag signal that can be calculated and judged by the digital signal processor (300) through the acoustomagnetic deactivation coil (104), the first signal preamplifier unit (105), the signal filter amplification unit (106), and the first AD sampling unit (107). The radio frequency deactivation module (200) converts the 58kHz damped oscillation tag signal generated by the excited acoustomagnetic anti-theft soft tag into a digital acoustomagnetic tag signal that can be calculated and judged by the digital signal processor (300) through the radio frequency deactivation enable unit (202), the second pulse width modulation signal unit (203), the second MOS driving unit (204), and the transformer unit. The unit (205) and the radio frequency deactivation coil (206) will convert the 8.2MHz radio frequency working frequency signal output by the direct digital frequency synthesizer (201) into an 8.2MHz electromagnetic wave signal that can be used to excite the radio frequency anti-theft soft tag in the detection sensing area under the control of the digital signal processor (300). The radio frequency deactivation module (200) will convert the 8.2MHz damped oscillation tag signal generated by the excited radio frequency anti-theft soft tag into a digital radio frequency tag signal that can be calculated and judged by the digital signal processor (300) through the radio frequency deactivation coil (206), the second signal preamplifier unit (207), the signal modulation unit (208), the signal demodulation unit (209), and the second AD sampling unit (210). The digital signal processor (300) can control the acoustomagnetic deactivation module (100) and the radio frequency deactivation module (200) to alternately transmit a 58KHz acoustomagnetic excitation signal and an 8.2MHz electromagnetic wave signal to the excitation detection sensing area in a time-division manner.

4. The deactivation system for deactivating two frequencies of anti-theft soft tags according to claim 1, characterized in that: The transmission time of the acoustomagnetic inactivation module (100) is 1ms-2ms, and the transmission time of the radio frequency inactivation module (200) is 1us-2us.

5. The deactivation system for deactivating two frequencies of anti-theft soft tags according to claim 1, characterized in that: The acoustomagnetic inactivation coil (104) in the acoustomagnetic inactivation module (100) and the radio frequency inactivation coil (206) in the radio frequency inactivation module (200) are mounted on the same panel and are spatially isolated from each other. The size of the radio frequency inactivation coil (206) is larger than that of the acoustomagnetic inactivation coil (104).

6. The deactivation system for deactivating two frequencies of anti-theft soft tags according to claim 5, characterized in that: The acoustomagnetic deactivation coil (104) is made of multiple turns of enameled wire, with the number of turns being 15-40; the radio frequency deactivation coil (206) has 1-4 turns.

7. A deactivation method for a deactivation system capable of deactivating two frequencies of anti-theft soft tags, characterized by the following steps: An inactivation system capable of deactivating two-frequency anti-theft soft tags begins operation and initializes the data. First, the system does not emit a 57kHz-59kHz acoustomagnetic excitation signal. The acoustomagnetic deactivation coil (104) receives electromagnetic wave signals from the environment. These signals are converted into digital environmental signals by a first signal preamplifier unit (105), a signal filtering and amplification unit (106), and a first AD sampling unit (107). Then, the acoustomagnetic deactivation module (100) transmits the digital environmental signals to a digital signal processor (300) for digital signal processing. The device (300) calculates the ambient noise and will not be excited even if an acousto-magnetic anti-theft soft tag is present in the detection area. Then, an inactivation system that can inactivate two frequencies of anti-theft soft tags begins to emit a 57KHz-59KHz acousto-magnetic excitation signal. If an acousto-magnetic anti-theft soft tag is present in the detection area, the acousto-magnetic inactivation module (100) can receive the 57KHz-59KHz damped oscillation tag signal generated by the excited acousto-magnetic anti-theft soft tag, and the acousto-magnetic inactivation module (100) can convert the 57KHz-59KHz damped oscillation tag signal into a digital acousto-magnetic tag signal that can be processed and judged by the digital signal processor (300). If the processor (300) determines that the received digital acousto-magnetic tag signal meets the deactivation characteristic requirements, then the digital signal processor (300) controls the acousto-magnetic deactivation module (100) to deactivate the acousto-magnetic anti-theft soft tag; then, the deactivation system that can deactivate two frequencies of anti-theft soft tags does not first emit electromagnetic wave signals of 7.9MHz-8.5MHz, and the radio frequency deactivation coil (206) receives electromagnetic wave signals in the environment. The electromagnetic wave signals in the environment received by the radio frequency deactivation coil (206) are converted into digital environmental signals through the second signal preamplifier unit (207), signal modulation unit (208), signal demodulation unit (209), and second AD sampling unit (210). Afterwards, the radio frequency deactivation module (200) sends the digital environmental signal to the digital signal processor (300), which calculates the environmental noise. Even if a radio frequency anti-theft soft tag exists in the detection area, it will not be activated. Then, an deactivation system capable of deactivating two frequencies of anti-theft soft tags begins to emit electromagnetic wave signals of 7.9MHz-8.5MHz. If a radio frequency anti-theft soft tag exists in the detection area, the radio frequency deactivation module (200) can receive the 7.9MHz-8.5MHz damped oscillation tag signal generated by the activated radio frequency anti-theft soft tag, and the radio frequency deactivation module (200) can deactivate the 7.9MHz-8.5MHz signal.The 5MHz damped oscillation tag signal is converted into a digital radio frequency tag signal that can be processed and judged by the digital signal processor (300). When the digital signal processor (300) determines that the received digital radio frequency tag signal meets the deactivation characteristic requirements, it controls the radio frequency deactivation module (200) to deactivate the radio frequency anti-theft soft tag.

8. The deactivation method of the deactivation system for deactivating two frequencies of anti-theft soft tags according to claim 7, characterized in that: An inactivation system capable of inactivating two frequencies of anti-theft soft tags deactivates the acousto-magnetic anti-theft soft tag. After the digital signal processor (300) controls the boost charging control unit (110) to boost the charging of the capacitor storage unit (111), the voltage detection unit (112) detects the capacitor charging voltage in real time.

9. A deactivation method for a deactivation system capable of deactivating two frequencies of anti-theft soft tags, characterized by the following steps: An inactivation system capable of deactivating two-frequency anti-theft soft tags begins operation and initializes the data. First, the system does not emit electromagnetic wave signals in the 7.9MHz-8.5MHz range. The radio frequency inactivation coil (206) receives electromagnetic wave signals from the environment. These signals are converted into digital environmental signals by a second signal preamplifier unit (207), a signal modulation unit (208), a signal demodulation unit (209), and a second AD sampling unit (210). Then, the radio frequency inactivation module (200) converts the digital signals into digital environmental signals. An environmental signal is transmitted to a digital signal processor (300), which calculates the environmental noise. Even if a radio frequency anti-theft soft tag is present in the detection area, it will not be activated. Then, an inactivation system capable of deactivating two frequencies of anti-theft soft tags begins to emit electromagnetic wave signals of 7.9MHz-8.5MHz. If a radio frequency anti-theft soft tag is present in the detection area, the radio frequency deactivation module (200) can receive the 7.9MHz-8.5MHz damped oscillation tag signal generated by the activated radio frequency anti-theft soft tag, and the radio frequency deactivation module (200) can deactivate the 7.9MHz-8.5MHz signal.The 5MHz damped oscillation tag signal is converted into a digital radio frequency tag signal that can be processed and judged by the digital signal processor (300). When the digital signal processor (300) determines that the received digital radio frequency tag signal meets the deactivation characteristic requirements, the digital signal processor (300) controls the radio frequency deactivation module (200) to deactivate the radio frequency anti-theft soft tag. Then, the deactivation system that can deactivate two frequencies of anti-theft soft tags does not first transmit the 57KHz-59KHz acoustomagnetic excitation signal. The acoustomagnetic deactivation coil (104) receives the electromagnetic wave signal in the environment. The electromagnetic wave signal in the environment received by the acoustomagnetic deactivation coil (104) is converted into a digital environmental signal through the first signal preamplifier unit (105), the signal filter amplification unit (106), and the first AD sampling unit (107). Then, the acoustomagnetic deactivation module (100) sends the digital environmental signal to the digital signal processor (300). Furthermore, the digital signal processor (300) calculates the ambient noise, ensuring that even if an acousto-magnetic anti-theft soft tag is detected within the sensing area, it will not be activated. Then, an inactivation system capable of deactivating two frequencies of anti-theft soft tags begins emitting a 57kHz-59kHz acousto-magnetic excitation signal. If an acousto-magnetic anti-theft soft tag is detected within the sensing area, the acousto-magnetic deactivation module (100) receives the 57kHz-59kHz damped oscillation tag signal generated by the activated acousto-magnetic anti-theft soft tag. The acousto-magnetic deactivation module (100) converts the 57kHz-59kHz damped oscillation tag signal into a digital acousto-magnetic tag signal that can be processed and judged by the digital signal processor (300). When the digital signal processor (300) determines that the received digital acousto-magnetic tag signal meets the deactivation characteristic requirements, the digital signal processor (300) controls the acousto-magnetic deactivation module (100) to deactivate the acousto-magnetic anti-theft soft tag.

10. A deactivation method for a deactivation system capable of deactivating two frequencies of anti-theft soft tags according to claim 9, characterized in that: An inactivation system capable of inactivating two frequencies of anti-theft soft tags deactivates the acousto-magnetic anti-theft soft tag. After the digital signal processor (300) controls the boost charging control unit (110) to boost the charging of the capacitor storage unit (111), the voltage detection unit (112) detects the capacitor charging voltage in real time.

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