Passive electronic lock, control method of passive electronic lock and storage medium

Abstract

The implementation scheme of this specification provides a passive electronic lock, a control method for a passive electronic lock, and a storage medium. The passive electronic lock includes: an encryption and unlocking mechanism for locking or unlocking; a status prompt unit for prompting the status of the encryption and unlocking mechanism; an energy storage unit; an energy harvesting unit for charging the energy storage unit based on an energy signal provided by a radio frequency key when the energy storage unit receives the energy signal; and a control unit for verifying the identity of the radio frequency key when the energy storage unit's charge level is above a first threshold when the encryption and unlocking mechanism is in a locked state, controlling the encryption and unlocking mechanism to unlock when the radio frequency key passes identity verification, and, after controlling the encryption and unlocking mechanism to unlock, controlling the status prompt unit to output an unlocking status prompt when the energy storage unit's charge level is above a second threshold to reserve the power required for locking. The implementation scheme of this specification can improve user experience.

Description

Technical Field

[0001] This specification relates to the technical field of passive electronic locks, and in particular to a passive electronic lock, a control method for a passive electronic lock, and a storage medium. Background Art

[0002] Electronic locks, a recently emerging smart home product, offer ease of use, high security, and powerful functionality. Currently, most home electronic locks (also known as electronic door locks) are powered (typically by batteries). However, due to size and power consumption limitations, these electronic locks are generally suitable for door locks.

[0003] When used in applications other than door locks, electronic locks are typically small, making it difficult to incorporate a built-in battery. Even if a battery is built in, the high energy consumption of the lock during operation may cause the battery to deplete quickly. Furthermore, when a user unlocks an electronic lock using a radio frequency transmitter (the radio frequency transmitter can be considered the key for this type of electronic lock (hereinafter referred to as the "RF key")), Bluetooth or near-field communication (NFC) is required to communicate with the electronic lock. This is generally not suitable for scenarios where electronic locks are shared by a large number of users, such as shared bicycle locks.

[0004] Currently, a new class of passive electronic locks has emerged that uses RF energy harvesting to generate power. These locks convert externally supplied wireless RF energy, such as that emitted by NFC or wireless chargers, into electrical energy for their own use, enabling functions such as identity verification and motor drive required for unlocking. RF keys typically include wireless data transmission capabilities, allowing them to simultaneously transmit both data and energy to the passive electronic lock. Consequently, passive electronic locks can operate without batteries, addressing the aforementioned issues with active electronic locks.

[0005] However, during the implementation of this application, the inventors discovered that after unlocking, passive electronic locks cannot reset the locking and unlocking mechanism due to a lack of energy, requiring the use of a radio frequency key again for locking. This requires the user to use the radio frequency key not only for unlocking but also for locking, making it relatively inconvenient. Summary of the Invention

[0006] The purpose of the implementation scheme of this specification is to provide a passive electronic lock, a control method of a passive electronic lock, and a storage medium to improve user experience.

[0007] To achieve the above objectives, on the one hand, the embodiments of this specification provide a passive electronic lock, comprising:

[0008] A locking and unlocking mechanism, used to perform locking or unlocking;

[0009] A status prompting unit, used to prompt the status of the locking and unlocking mechanism;

[0010] Energy storage unit;

[0011] an energy collection unit, configured to charge the energy storage unit based on an energy signal provided by a radio frequency key when the energy signal is received;

[0012] A control unit is configured to, when the locking and unlocking mechanism is in a locked state and the power level of the energy storage unit is higher than a first threshold, verify the identity of the radio frequency key, control the locking and unlocking mechanism to perform unlocking when the radio frequency key passes the identity authentication, and, after controlling the locking and unlocking mechanism to perform unlocking, control the status prompt unit to output an unlocking status prompt when the power level of the energy storage unit is higher than a second threshold, so as to reserve the power required for locking.

[0013] In the passive electronic lock of an embodiment of the present specification, the passive electronic lock further includes:

[0014] The position detection unit is arranged in the lock body and is used to detect the position of the lock beam and provide the detection result to the control unit.

[0015] In the passive electronic lock of one embodiment of the present specification, the control unit is further configured to:

[0016] After the status prompt unit outputs the unlock status prompt, if the lock beam does not change from the pushed position to the pulled position within the timing period, the locking and unlocking mechanism is controlled to perform locking; the timing period starts when the status prompt unit outputs the unlock status prompt.

[0017] In the passive electronic lock of one embodiment of the present specification, the control unit is further configured to:

[0018] After the status prompt unit outputs the unlock status prompt, the passive electronic lock is controlled to enter a dormant state.

[0019] In the passive electronic lock of one embodiment of the present specification, the control unit is further configured to:

[0020] When the passive electronic lock is in a dormant state, if the lock beam changes from a pulled-out position to a pushed-in position, the locking and unlocking mechanism is controlled to perform locking.

[0021] In the passive electronic lock of one embodiment of the present specification, the control unit is further configured to:

[0022] When the radio frequency key fails to pass identity authentication, the locking state of the locking and unlocking mechanism is maintained, and the remaining power of the energy storage unit is actively exhausted.

[0023] In the passive electronic lock of one embodiment of the present specification, the control unit is further configured to:

[0024] After controlling the locking and unlocking mechanism to execute locking, the remaining power of the energy storage unit is actively exhausted.

[0025] In the passive electronic lock of an embodiment of the present specification, the energy storage unit includes:

[0026] Energy input and output terminals;

[0027] a capacitor electrically connected to the energy input and output terminals;

[0028] a controllable switch, connected in series between the capacitor and the energy input and output terminals and controlled by the control unit, for controlling the charging and discharging of the capacitor;

[0029] The fact that the charge of the energy storage unit is higher than a first threshold value includes that the charge of the capacitor is higher than a first threshold value; and the fact that the charge of the energy storage unit is higher than a second threshold value includes that the charge of the capacitor is higher than a second threshold value.

[0030] In the passive electronic lock of an embodiment of the present specification, the energy storage unit includes:

[0031] Energy input and output terminals;

[0032] a first capacitor electrically connected to the energy input and output terminals;

[0033] a first controllable switch connected in series between the first capacitor and the energy input and output terminal and controlled by the control unit, for controlling the charging and discharging of the first capacitor;

[0034] a second capacitor electrically connected to the energy input and output terminals;

[0035] a second controllable switch connected in series between the second capacitor and the energy input and output terminal and controlled by the control unit, for controlling the charging and discharging of the second capacitor;

[0036] Among them, the power of the energy storage unit is higher than the first threshold value, which includes: the sum of the power of the first capacitor and the second capacitor is higher than the first threshold value, and the first threshold value at least meets the power required to perform one unlocking and one locking; the power of the energy storage unit is higher than the second threshold value, which includes: the power of one of the first capacitor and the second capacitor is higher than the second threshold value.

[0037] In the passive electronic lock of one embodiment of the present specification, the locking and unlocking mechanism includes:

[0038] A cavity bracket is arranged in the lock body;

[0039] A locking tongue is movably arranged on the cavity support;

[0040] an elastic element for maintaining the lock tongue in contact with the lock beam;

[0041] Motor;

[0042] A limit baffle is fixedly connected to the output shaft of the motor; when the lock beam is in the pushed-in position, when the limit baffle is in a blocking position overlapping with the lock tongue, the lock tongue is fixed; when the limit baffle is in a release position staggered from the lock tongue, the lock tongue is released.

[0043] In the passive electronic lock of one embodiment of the present specification, the locking and unlocking mechanism includes:

[0044] A cavity bracket is arranged in the lock body;

[0045] Motor;

[0046] The locking tongue is movably arranged on the cavity bracket and is threadedly connected to the output shaft of the motor. Under the drive of the output shaft, the locking tongue can move axially to achieve locking or separation between the locking tongue and the lock beam.

[0047] In the passive electronic lock of one embodiment of the present specification, the locking and unlocking mechanism includes:

[0048] A cavity bracket is arranged in the lock body;

[0049] A locking tongue is movably arranged on the cavity support;

[0050] Motor;

[0051] a cam fixed to the output shaft of the motor, wherein when the distal end of the cam contacts the lock tongue, the lock tongue is disengaged from the lock beam, and when the proximal end of the cam contacts the lock tongue, the lock tongue is locked to the lock beam;

[0052] An elastic element is used to maintain the locking tongue in contact with the cam.

[0053] On the other hand, the embodiment of this specification also provides a control method for a passive electronic lock, including:

[0054] When the energy collection unit receives the energy signal provided by the radio frequency key, the energy collection unit charges the energy storage unit based on the energy signal;

[0055] When the locking and unlocking mechanism is in a locked state, verifying the identity of the radio frequency key when the power level of the energy storage unit is higher than a first threshold;

[0056] When the radio frequency key passes the identity verification, controlling the locking and unlocking mechanism to perform unlocking;

[0057] After controlling the locking and unlocking mechanism to perform unlocking, when the power level of the energy storage unit is higher than a second threshold, the control state prompt unit outputs an unlocking state prompt to reserve power required for locking.

[0058] In the control method of one embodiment of the present specification, the control method further comprises:

[0059] If the lock beam does not change from the pushed-in position to the pulled-out position within the timing period, the locking and unlocking mechanism is controlled to perform locking; the timing period starts when the status prompt unit outputs the unlocking status prompt.

[0060] In the control method of one embodiment of the present specification, the control method further comprises:

[0061] After the status prompt unit outputs the unlock status prompt, the passive electronic lock is controlled to enter a dormant state.

[0062] In the control method of one embodiment of the present specification, the control method further comprises:

[0063] When the passive electronic lock is in a dormant state, if the lock beam changes from a pulled-out position to a pushed-in position, the locking and unlocking mechanism is controlled to perform locking.

[0064] In the control method of one embodiment of the present specification, the control method further comprises:

[0065] When the radio frequency key fails to pass identity authentication, the locking state of the locking and unlocking mechanism is maintained, and the remaining power of the energy storage unit is actively exhausted.

[0066] In the control method of one embodiment of the present specification, the control method further comprises:

[0067] After controlling the locking and unlocking mechanism to perform locking, the remaining power of the energy storage unit is actively exhausted. In the control method of an embodiment of the present specification, the energy storage unit includes:

[0068] Energy input and output terminals;

[0069] a capacitor electrically connected to the energy input and output terminals;

[0070] a controllable switch, connected in series between the capacitor and the energy input and output terminals and controlled by the control unit, for controlling the charging and discharging of the capacitor;

[0071] The fact that the charge of the energy storage unit is higher than a first threshold value includes that the charge of the capacitor is higher than a first threshold value; and the fact that the charge of the energy storage unit is higher than a second threshold value includes that the charge of the capacitor is higher than a second threshold value.

[0072] In the control method of an embodiment of the present specification, the energy storage unit includes:

[0073] Energy input and output terminals;

[0074] a first capacitor electrically connected to the energy input and output terminals;

[0075] a first controllable switch connected in series between the first capacitor and the energy input and output terminal and controlled by the control unit, for controlling the charging and discharging of the first capacitor;

[0076] a second capacitor electrically connected to the energy input and output terminals;

[0077] a second controllable switch connected in series between the second capacitor and the energy input and output terminal and controlled by the control unit, for controlling the charging and discharging of the second capacitor;

[0078] Among them, the power of the energy storage unit is higher than the first threshold value, which includes: the sum of the power of the first capacitor and the second capacitor is higher than the first threshold value, and the first threshold value at least meets the power required to perform one unlocking and one locking; the power of the energy storage unit is higher than the second threshold value, which includes: the power of one of the first capacitor and the second capacitor is higher than the second threshold value.

[0079] On the other hand, the embodiment of this specification further provides a computer storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to execute the above-mentioned control method.

[0080] As can be seen from the above implementation scheme of this specification, after unlocking, the control unit does not directly control the status prompt unit to output the unlock status prompt, but first confirms whether the power level of the energy storage unit is higher than the second threshold. Only when the power level of the energy storage unit is higher than the second threshold does it control the status prompt unit to output the unlock status prompt. Given that when unlocking a passive electronic lock, the user generally stops the radio frequency key from outputting the energy signal after perceiving the unlock status prompt, thereby reserving power in the energy storage unit for subsequent locking. Therefore, the implementation scheme of this specification generally does not require the use of a radio frequency key when locking, thereby facilitating user use and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some of the embodiments described in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. In the drawings:

[0082] Figure 1 This is a schematic diagram of the structure of a passive electronic lock in some embodiments of this specification;

[0083] Figure 2 This is a structural block diagram of a passive electronic lock in some embodiments of this specification;

[0084] Figure 3 This is a schematic diagram of the use of a passive electronic lock in some embodiments of this specification;

[0085] Figure 4 This is a structural block diagram of a passive electronic lock in some other implementation schemes of this specification;

[0086] Figure 5 This is a schematic diagram of the structure of a passive electronic lock in some embodiments of this specification;

[0087] Figure 6a for Figure 5 Schematic diagram showing how the limit baffle in a passive electronic lock blocks the movement of the lock tongue when it overlaps with the lock tongue;

[0088] Figure 6b for Figure 5 Schematic diagram showing the movement of the lock tongue when the limit baffle and the lock tongue are staggered in the passive electronic lock;

[0089] Figure 7 This is a schematic structural diagram of a passive electronic lock in some other embodiments of this specification;

[0090] Figure 8 This is a schematic structural diagram of a passive electronic lock in some other embodiments of this specification;

[0091] Figure 9 A schematic diagram of a lock beam of a passive electronic lock in an unplugged position in some embodiments of the present specification;

[0092] Figure 10 This is a structural block diagram of the energy storage unit in some embodiments of this specification;

[0093] Figure 11 A structural block diagram of an energy storage unit in some other embodiments of this specification;

[0094] Figure 12A flowchart of a method for controlling a passive electronic lock in some embodiments of this specification;

[0095] Figure 13 Schematic diagram of computer storage media in some embodiments of the present specification. DETAILED DESCRIPTION

[0096] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the implementation schemes of this specification will be clearly and completely described below in conjunction with the drawings in the implementation schemes of this specification. Obviously, the implementation schemes described are only part of the implementation schemes of this specification, not all of the implementation schemes. Based on the implementation schemes in this specification, all other implementation schemes obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification. For example, forming a second component above a first component may include an implementation scheme in which the first component and the second component are in direct contact, and may also include an implementation scheme in which the first component and the second component are in non-direct contact (i.e., additional components may be included between the first component and the second component), etc.

[0097] Moreover, for ease of description, some embodiments of this specification may use spatially relative terms such as "above," "below," "top," and "below" to describe the relationship between one element or component and another (or other) elements or components as shown in the drawings of the embodiments. It should be understood that in addition to the orientations described in the drawings, the spatially relative terms are also intended to include different orientations of the device during use or operation. For example, if the device in the drawings is turned over, an element or component described as "below" or "beneath" another element or component will then be positioned "above" or "on" the other element or component.

[0098] The passive electronic lock in this specification is an electronic lock that does not require batteries or external power supply (such as external mains power). Figure 1 As shown, in some embodiments of the present disclosure, a passive electronic lock may include a lock body 100, a locking beam 200, and a locking / unlocking mechanism 300. The locking beam 200 is disposed on the lock body 100 and is movable relative to the lock body 100. A locking slot 201 is defined at the free end of the locking beam 200. The locking / unlocking mechanism 300 is disposed within the lock body 100 and is used to lock (i.e., tighten) or unlock (i.e., release).

[0099] Combine Figure 2As shown, in some embodiments of the present specification, the passive electronic lock may further include a status prompt unit, an energy storage unit, an energy collection unit, a radio frequency communication unit and a control unit, etc. Among them, the status prompt unit can be used to prompt the status of the locking and unlocking mechanism. The energy collection unit can be used to charge the energy storage unit based on the energy signal when receiving the energy signal provided by the radio frequency key. The control unit can be used to verify the identity of the radio frequency key when the power level of the energy storage unit is higher than a first threshold when the locking and unlocking mechanism is in a locked state, control the locking and unlocking mechanism to perform unlocking when the radio frequency key passes the identity authentication, and control the status prompt unit to output an unlocking status prompt when the power level of the energy storage unit is higher than a second threshold after controlling the locking and unlocking mechanism to perform unlocking, so as to reserve the power required for locking.

[0100] In the passive electronic lock of the embodiment of the present specification, after unlocking, the control unit does not directly control the status prompt unit to output the unlock status prompt. Instead, it first confirms whether the power level of the energy storage unit is above a second threshold. Only when the power level of the energy storage unit is above the second threshold does it control the status prompt unit to output the unlock status prompt. Given that when unlocking a passive electronic lock, the user generally stops the radio frequency key from outputting the energy signal after sensing the unlock status prompt, thus reserving power in the energy storage unit for subsequent locking. Therefore, the passive electronic lock of the embodiment of the present specification generally does not require the use of a radio frequency key when locking, thereby facilitating user use and improving the user experience.

[0101] Generally speaking, the locking and unlocking mechanism of a passive electronic lock has two states: locked and unlocked. In the locked state, the protected object (such as a small personal cabinet lock, a suitcase lock, a shared bicycle lock and other devices) is difficult to open. In the unlocked state, the protected object can be opened freely. In some cases, the state of the locking and unlocking mechanism may not be easily perceived by the user. For example, after some passive electronic locks are unlocked, their lock beams do not automatically pop out, and they need to be pulled out under the action of external force (such as manual pulling out). In this case, if the user cannot perceive the state of the unlocking mechanism, it is impossible to determine when the lock beam can be pulled out. Therefore, in order to enable the user to perceive the state of the locking and unlocking mechanism in a timely manner, the passive electronic lock can be configured with a status prompt unit.

[0102] In some embodiments of the present specification, the status prompt unit can output a lock status prompt in the form of sound and / or voice, that is, the status prompt unit can be a sound alarm unit (or a device component with similar functions). For example, when the status prompt unit receives an unlock status prompt signal from the control unit, it can emit a "click" prompt sound to prompt the user that the lock has been unlocked. For another example, when the status prompt unit receives an unlock status prompt signal from the control unit, it can emit a "click" prompt voice to prompt the user that the lock has been unlocked. For another example, when the status prompt unit receives an unlock status prompt signal from the control unit, it can emit a "click" prompt sound and emit a "xxx has been unlocked" prompt voice, and so on. Those skilled in the art will understand that in other embodiments of the present specification, the prompt output by the status prompt unit can also use light prompts (such as color light prompts, flashing prompts, etc.), graphic prompts, vibration prompts or a combination thereof. Accordingly, the status prompt unit can be a light alarm unit, a display unit, a vibration component, etc. This specification does not limit this, and the specific selection can be made as needed.

[0103] In some embodiments of the present specification, the radio frequency key can be a dedicated or universal active electronic device. For example, in an exemplary embodiment, the radio frequency key can be a remote control dedicated to a passive electronic lock. Figure 3 In another exemplary embodiment, the radio frequency key may be a portable electronic device, and the passive electronic lock may be a passive electronic padlock. The portable electronic device may be, for example, a smartphone, a digital assistant, or a smart wearable device (e.g., a smart bracelet, smart watch, smart glasses, or a smart helmet).

[0104] In the embodiments of the present specification, the energy collection unit is capable of converting the received energy signal into an electrical signal (such as a voltage signal) suitable for storage in the energy storage unit, and under the control of the control unit, using the electrical signal to charge the energy storage unit. In one embodiment of the present specification, a typical energy signal is an electromagnetic wave; accordingly, the energy collection unit may include an energy receiving antenna, a rectifier circuit, and a voltage stabilizing circuit, etc. The energy receiving antenna can convert the energy signal into an electrical signal, and after the electrical signal is processed by the rectifier circuit and the voltage stabilizing circuit, it can not only charge the energy storage unit, but also directly power the radio frequency communication module, the control unit, etc. It should be understood that in other embodiments of the present specification, as needed, the energy collection unit can also be configured to collect any one or more energies or signals, such as NFC signals, wireless charging signals, WiFi signals, and even light energy, kinetic energy, etc.

[0105] In some embodiments of the present specification, the energy storage unit may include a capacitor or a capacitor group (eg, a series-parallel combination of multiple capacitors).

[0106] For example, in Figure 10In the exemplary embodiment shown, the energy storage unit may include: a capacitor, energy input and output terminals and a controllable switch. The capacitor may be electrically connected to the energy input and output terminals. The controllable switch may be connected in series between the capacitor and the energy input and output terminals; the controllable switch is controlled by a control unit to control the charging and discharging of the capacitor. When the amount of electricity in the capacitor is charged to a first threshold value (i.e., the amount of electricity in the energy storage unit is higher than the first threshold value), the control unit may verify the identity of the radio frequency key, and may control the unlocking mechanism to perform unlocking when the radio frequency key passes the identity verification. Due to the unlocking consumption during the charging process, the amount of electricity accumulated in the capacitor will drop significantly (the remaining amount of electricity is used to maintain the continuous operation of the circuit to avoid exhaustion and loss of the state of the passive electronic lock), and then re-store energy above the first threshold value until the second threshold value (i.e., the amount of electricity in the energy storage unit is higher than the second threshold value), the control unit may control the status prompt unit to output an unlocking status prompt. It can be seen that in Figure 10 In the exemplary embodiment shown, the capacitor stores energy for both locking and unlocking. Furthermore, the first threshold is sufficient for the unlocking mechanism to perform a single locking operation, while the second threshold is sufficient for the unlocking mechanism to perform a single unlocking operation. For example, if the amount of energy required for an unlocking operation is E1 and the first threshold is Thd1, then Thd1 ≥ E1. For example, if the amount of energy required for a locking operation is E2 and the second threshold is Thd2, then Thd2 ≥ E2.

[0107] For example, in Figure 11 In the exemplary embodiment shown, the energy storage unit may include a first capacitor, a second capacitor, a first controllable switch, a second controllable switch and an energy input and output terminal. The first capacitor may be electrically connected to the energy input and output terminal to store the amount of electricity required for unlocking. The first controllable switch may be connected in series between the first capacitor and the energy input and output terminal, and be controlled by the control unit to control the charging and discharging of the first capacitor. The second capacitor may be electrically connected to the energy input and output terminal to store the amount of electricity required for locking. The second controllable switch may be connected in series between the second capacitor and the energy input and output terminal, and be controlled by the control unit to control the charging and discharging of the second capacitor.

[0108] exist Figure 11 In the exemplary embodiment shown, the amount of electricity in the energy storage unit higher than the first threshold value can be: the sum of the amounts of electricity in the first capacitor and the second capacitor is higher than the first threshold value, and the first threshold value at least satisfies the amount of electricity required to perform one unlock and one lock (for example, the amount of electricity required to perform one unlock is E1, the amount of electricity required to perform one lock is E2, the first threshold value is Thd1, then Thd1≥E1+E2 should be satisfied). The amount of electricity in the energy storage unit higher than the second threshold value can be: the amount of electricity in the second capacitor is higher than the second threshold value (for example, the amount of electricity required to perform one lock is E2, the second threshold value is Thd2, then Thd2≥E2 should be satisfied). It can be seen that, in Figure 11 In the exemplary embodiment shown, the first capacitor is used to store energy for unlocking, and the second capacitor is used to store energy for locking. Of course, if the reverse is true, that is, the first capacitor is used to store energy for locking, and the second capacitor is used to store energy for unlocking, then the charge of the energy storage unit being higher than the second threshold can also mean that the charge of the first capacitor is higher than the second threshold.

[0109] Since the power required for the motor to rotate is generally large, the capacitor usually discharges relatively quickly. If a single capacitor is used to store energy for locking and unlocking, a relatively complex circuit is generally required to control the discharge of the capacitor in real time to avoid excessive power consumption during unlocking, which may result in the inability to lock the lock later due to insufficient power in the capacitor. In the above embodiment, two capacitors are used: one is responsible for storing energy for unlocking, and the other is responsible for storing energy for locking. In this way, not only is energy storage for locking and unlocking achieved, but there is also no need for a complex circuit to detect the discharge of a single capacitor (i.e., only a single capacitor is used to store energy for locking and unlocking), thereby improving the reliability of the passive electronic lock at a lower cost. It should be understood that the capacitor as the energy storage unit is only used as an example. In other embodiments, the energy storage unit can also be other suitable energy storage elements.

[0110] Please continue to refer to Figure 11 In the exemplary embodiment shown, the energy input and output terminals can be used to provide the electrical energy from the energy collection unit to the first capacitor and the second capacitor respectively through the first controllable switch and the second controllable switch, that is, the first capacitor and the second capacitor can be charged at the same time. When the sum of the electrical charge of the first capacitor and the second capacitor is higher than the first threshold value (the first threshold value at least satisfies the electrical charge required for performing one unlocking and one locking), the control unit can control the locking and unlocking mechanism to perform unlocking, and when unlocking, the energy input and output terminals can provide the electrical energy from the first capacitor to the main control unit, the locking and unlocking mechanism and other components. After the locking and unlocking mechanism completes the unlocking, since the electrical charge of the second capacitor is not used (that is, the electrical charge of the second capacitor is still higher than the second threshold value), the control unit can control the status prompt unit to output the unlocking status prompt; when locking, the energy input and output terminals can provide the electrical energy from the second capacitor to the main control unit, the locking and unlocking mechanism and other components.

[0111] After unlocking, it may take a relatively long time to lock again. In order to ensure that the energy storage unit can store electrical energy for a long time, the energy storage unit may have a lower leakage current; at the same time, in order to support high output current, the energy storage unit may have a lower internal resistance.

[0112] Furthermore, the controllable switch can have a higher isolation impedance when off, further improving the capacitor's ability to store energy for a longer period of time. Furthermore, to balance charging efficiency, the controllable switch can have a lower internal impedance when closed. Taking all these factors into consideration, metal-oxide-semiconductor field-effect transistors (MOSFETs) are preferred controllable switches.

[0113] refer to Figure 10 or Figure 11 As shown, the passive electronic lock may also include a voltage sampling circuit. This voltage sampling circuit can collect the voltage across the capacitor from the energy input and output terminals, convert it into a digital signal, and provide it to the control unit, so that the control unit can obtain the corresponding charge level of the capacitor. To save energy, the voltage sampling circuit can be an ultra-low power circuit. For example, in one exemplary embodiment, the voltage sampling circuit may include an analog-to-digital converter, etc.

[0114] In the embodiments of this specification, the radio frequency communication module can be used to implement wireless communication (e.g., energy signal transmission, identity authentication, etc.) between the passive electronic lock and the radio frequency key. In some embodiments of this specification, the radio frequency communication module can support one or more wireless communication methods, such as NFC communication, communication based on a wireless charging architecture, Bluetooth communication, and / or optical communication. In the embodiments of this specification, in general, the communication method supported by the radio frequency communication module should have low power consumption.

[0115] In the embodiments of this specification, the control unit may generally include a single-chip microcomputer, a microcontroller unit (MCU), a digital signal processor (DSP), or an application-specific integrated circuit (ASIC). The control unit may be configured with a security authentication module to implement security authentication (i.e., identity verification) of the radio frequency key, thereby facilitating the security of the passive electronic lock and the object it protects.

[0116] In some embodiments of the present specification, the energy storage unit may be in an energy-depleted state (ie, the amount of electricity stored in the energy storage unit is empty or substantially empty), and the locking beam is in a pushed-in position (eg, Figure 1 As shown). Within the communication range, when the radio frequency key is turned on, the energy collection unit can receive the energy signal emitted by the radio frequency key and convert it into an electrical signal. At this time, the control unit can control the energy collection unit to use the energy signal to charge the energy storage unit. For example, in Figure 11In the exemplary embodiment shown, the control unit may close the first controllable switch and the second controllable switch, so that the electrical signal output by the energy harvesting unit can charge the first capacitor and the second capacitor.

[0117] In some embodiments of the present specification, when the power level of the energy storage unit is not higher than the set first threshold, the control unit may continue to periodically detect whether the power level of the energy storage unit is higher than the set first threshold. If the radio frequency key stops transmitting the energy signal before the power level of the energy storage unit is higher than the set first threshold, the control unit may continue to maintain the locked state of the locking and unlocking mechanism and actively deplete the power of the energy storage unit (that is, it may actively accelerate the power consumption of the energy storage unit to deplete the power of the energy storage unit as soon as possible). In this way, the passive electronic lock can be reset to the initial state, so that the passive electronic lock can start working in a known state when it is unlocked next time. Otherwise, when the remaining power in the energy storage unit is naturally discharged to a certain extent, it may enter an unknown state (or an unpredictable state), which may easily affect the subsequent use of the passive electronic lock and may cause potential safety problems.

[0118] In some embodiments of the present specification, actively accelerating the power consumption of the energy storage unit can be achieved through software and / or hardware. For example, in an exemplary embodiment, the control unit can prevent the passive electronic lock from being in a dormant state, or the control unit can execute some empty operation instructions (such as cycle timing, etc.) to accelerate the power consumption of the energy storage unit. In another exemplary embodiment, a discharge resistor with a smaller resistance value can also be set for the energy storage unit; when it is necessary to actively deplete the power of the energy storage unit, the control unit can discharge the energy storage unit to the discharge resistor through a controllable switch, thereby also accelerating the power consumption of the energy storage unit. In some other embodiments, other methods are also used to actively deplete the power of the energy storage unit. This specification does not limit this, and the specific method can be selected according to needs. Please note that in some other embodiments of the present specification, all content related to actively depleting the power of the energy storage unit can refer to the description of this part, and will not be repeated later.

[0119] In some embodiments of the present specification, when the charge level of the energy storage unit is higher than a predetermined first threshold, the control unit may authenticate the radio frequency key to confirm whether the radio frequency key has unlocking authority. For example, the control unit may communicate with the radio frequency key via a radio frequency communication module to perform authentication. If the radio frequency key passes authentication, indicating that the radio frequency key has unlocking authority, the control unit may control the locking and unlocking mechanism to perform an unlocking action, thereby switching the locking and unlocking mechanism from a locked state to an unlocked state.

[0120] In some embodiments of this specification, for Figure 10In the exemplary embodiment shown, after the locking and unlocking mechanism performs the unlocking action, the control unit can also periodically determine whether the power level of the energy storage unit is higher than a set second threshold value, and only when the power level of the energy storage unit is higher than the second threshold value, control the status prompt unit to output an unlocking status prompt, so as to reserve power for subsequent locking.

[0121] Generally, after unlocking, the user needs to wait for a period of time before relocking in order to achieve the purpose of unlocking. In some cases, the interval time for relocking after unlocking may be short (for example, it may be only a few minutes, or even a few seconds). For example, in an exemplary embodiment, the object protected by the passive electronic lock is a suitcase. After unlocking, the user opens the suitcase and takes out a water cup from it. After taking out the water cup, the user's purpose of unlocking is achieved, and the lock can be relocked. In other cases, the interval time for relocking after unlocking may be longer (for example, it may be tens of minutes, or even several hours). For example, in an exemplary embodiment, the object protected by the passive electronic lock is the door of an outdoor communication base station equipment room; after unlocking, the user needs to perform time-consuming operations such as repairing, replacing or expanding the equipment placed in the door of the outdoor communication base station equipment room; after completing the operation, the user's purpose of unlocking is achieved, and the lock can be relocked.

[0122] Therefore, although for the same passive electronic lock, the amount of electricity consumed by the unlocking mechanism to perform the unlocking action is basically the same as the amount of electricity consumed by it to perform the locking action. However, considering that the interval between unlocking and relocking varies in different application scenarios, and during the interval, even if the passive electronic lock is in a dormant state, it will consume electricity (including the loss of electricity due to natural discharge of the energy storage unit). Therefore, considering the discharge loss, the second threshold value should be set to be greater than the amount of electricity required to perform a lock, which is E2. For example, in Figure 10 In the exemplary embodiment, the amount of electricity required to perform a lock is E2, and the second threshold is Thd2. Then, taking into account the discharge loss, Thd2 ≥ E2 + aT should be satisfied, where a is the amount of electricity consumed per unit time by the passive electronic lock in the dormant state, and T is the upper limit of the interval time between unlocking and relocking (the specific time limit can be determined based on the actual application scenario and the power consumption of the passive electronic lock in the dormant state). Figure 11 In the exemplary embodiment, the power required for one unlocking is E1, the power required for one locking is E2, and the first threshold is Thd1. Then, considering the discharge loss, Thd1≥E1+E2+aT should be satisfied.

[0123] In some embodiments of the present disclosure, when the power level of the energy storage unit exceeds a predetermined second threshold, the control unit may control the status prompt unit to output an unlock status prompt to inform the user that the passive electronic lock is unlocked. At this point, the user may remove the radio frequency key or turn off the radio frequency key to stop the radio frequency key from transmitting energy signals to the passive electronic lock.

[0124] In some embodiments of the present specification, after the control status prompt unit outputs the unlock status prompt, the control unit can control the passive electronic lock to enter a sleep state (or sleep mode) to minimize its own power consumption, thereby reserving power for subsequent locking.

[0125] In some embodiments of the present specification, some passive electronic locks will not automatically pop out after unlocking, that is, the lock beam will not automatically move from the pushed position (for example, Figure 1 shown) to the unplugged position (e.g. Figure 9 Therefore, after unlocking, the user needs to pull the lock beam outward from the lock body, so that the lock beam moves from the pushed position (for example Figure 1 shown) to the unplugged position (e.g. Figure 9 In this case, combined with Figure 4 As shown, the passive electronic lock may further include a position detection unit, which may be disposed in the lock body and in correspondence with the end position of the lock beam (eg Figure 5 、 Figure 7 or Figure 8 The position detection unit 400 corresponds to the position detection unit 400 in the figure, which is used to detect the position of the lock beam and provide the detection result to the control unit. After the status prompt unit outputs the unlock status prompt, the control unit can determine whether the lock beam has changed from the pushed position to the pulled position within a set timing period based on this detection result. In some exemplary embodiments, the position detection unit can be implemented using a travel switch (such as a micro switch or proximity switch) or a Hall sensor.

[0126] In some embodiments of the present specification, if the lock beam does not change from the pushed-in position to the pulled-out position within the set timing period, the control unit may control the locking and unlocking mechanism to perform locking to improve the security of the object protected by the passive electronic lock. The timing period may start when the status prompt unit outputs the unlock status prompt. After locking is performed, the control unit may also actively deplete the remaining energy of the energy storage unit. Of course, if the lock beam changes from the pushed-in position to the pulled-out position within the set timing period, the control unit may no longer judge and stop timing. Thereafter, the control unit may maintain the passive electronic lock in a dormant state until it is awakened when the position detection unit detects that the lock beam has changed from the pulled-out position to the pushed-in position.

[0127] In some embodiments of this specification, some passive electronic locks require the user's cooperation before locking. For example, before locking, the lock beam will not automatically move from the pulled-out position (such as Figure 9 shown) into a pushed position (e.g. Figure 1 Therefore, when locking is required, the user needs to move the Figure 9 The lock beam is pushed into the lock body so that the lock beam is converted to the pushed position (for example Figure 1 When the position detection unit detects that the lock beam has transitioned from the pulled-out position to the pushed-in position, it can provide the detection result to the control unit, thereby waking up the control unit. The control unit can then control the locking and unlocking mechanism to perform a locking action, thereby completing the locking and transitioning the locking and unlocking mechanism to a locked state. After controlling the locking and unlocking mechanism to perform the locking, the control unit can also actively deplete the remaining power of the energy storage unit.

[0128] Those skilled in the art will understand that when the locking and unlocking mechanism is in the unlocked state, if the energy storage unit is exhausted (for example, after unlocking, the energy storage unit is exhausted due to a long interval), the radio frequency key can also be used to charge the energy storage unit to reset the locking and unlocking mechanism to the locked state.

[0129] like Figure 5 As shown, in some embodiments of the present specification, the locking and unlocking mechanism 300 may include: a cavity bracket 301, a lock tongue 302, a motor 303, a limit baffle 304a and an elastic element 305a. The cavity bracket 301 is arranged in the lock body; the lock tongue 302 is movably arranged on the cavity bracket 301. The elastic element 305a can be used to maintain the lock tongue 302 in conflict with the lock beam 200. The limit baffle 304a can be fixedly connected to the output shaft of the motor 303. When the lock beam 200 is in the pushed-in position, based on the drive of the motor 303, when the limit baffle 304a rotates to the blocking position (for example, overlapping with the lock tongue 302) Figure 6a ), the lock tongue 302 is fixed; that is, due to the obstruction of the limit baffle 304a, the lock tongue 302 will not move axially relative to the lock beam 200, thereby achieving locking. When the limit baffle 304a rotates to a release position that is staggered with the lock tongue 302 (for example Figure 6bWhen the locking bolt 302 is unlocked (as shown in FIG2 ), the locking bolt 302 is released; that is, because the stopper 304a no longer blocks the locking bolt 302, when an external force acts on the locking bolt 302 through the lock beam 200, the locking bolt 302 can move axially relative to the lock beam 200, thereby allowing the locking bolt 302 to move into or out of the lock slot 201. In other words, when the stopper 304a no longer blocks the movement of the locking bolt 302, although the locking bolt 302 is still inserted into the lock slot 201 of the lock beam 200 due to the action of the elastic element 305a, due to the angular relationship between the locking bolt 302 and the lock slot 201, when the lock beam 200 is pulled out, the lock beam 200 will squeeze the locking bolt 302 to move rightward and compress the elastic element 305a until the locking bolt 302 can be moved out of the lock slot 201 (i.e., detached from the lock beam 200), and the elastic element 305a drives the locking bolt 302 to move leftward and reset. Of course, since the limit baffle 304a no longer blocks the movement of the lock tongue 302, when the lock beam 200 is in the pulled-out position, when the lock beam 200 is pushed inward, the lock beam 200 will again squeeze the lock tongue 302 to move axially to the right and compress the elastic element 305a until the lock tongue 302 can begin to insert into the lock slot 201. During the process of the lock tongue 302 inserting into the lock slot 201, the elastic element 305a drives the lock tongue 302 to move left and reset.

[0130] It can be seen from this that Figure 5 In the embodiment shown, the mechanical structure of the motor-driven lock tongue is very simple, and since the motor does not need to drive the lock tongue compression spring, the load of the motor is very low and the driving current is very small, so it is more suitable for passive electronic locks.

[0131] like Figure 7 As shown, in some embodiments of the present specification, the locking and unlocking mechanism 300 may include: a cavity bracket 301 arranged in the lock body 100, a lock tongue 302 movably arranged on the cavity bracket 301, and a motor 303. The motor 303 is controlled by a control unit, that is, the control unit can control the rotation of the motor 303 through a motor driver. The lock tongue 302 can be threadedly connected to the output shaft of the motor 303. In this way, when the output shaft of the motor 303 rotates, the lock tongue 302 can move axially relative to the output shaft under the drive of the output shaft. For example, when the output shaft rotates forward, the lock tongue 302 can move along the axial direction of the output shaft in a direction away from the motor 303, so that the lock tongue 302 can be disengaged from the lock groove 201 located at the end of the lock beam 200, thereby achieving unlocking. When the output shaft is reversed, the locking tongue 302 can move along the axial direction of the output shaft toward the motor 303, so that the locking tongue 302 can be locked with the locking groove 201 at the end of the locking beam 200 (for example, Figure 7In addition, in other embodiments of the present specification, the locking and unlocking mechanism 300 may further include a limit baffle 306, which may be provided at the end of the output shaft of the motor 303 to prevent the lock tongue 302 from detaching from the end of the output shaft of the motor 303.

[0132] like Figure 8 As shown, in other embodiments of the present specification, the locking and unlocking mechanism 300 may include a cavity bracket 301 placed in the lock body 100, a lock tongue 302 movably provided on the cavity bracket 301, a motor 303, a cam 304b and an elastic element 305b. The motor 303 is controlled by a control unit, that is, the control unit can control the rotation of the motor 303 through a motor driver. The cam 304b can be fixed to the output shaft of the motor 303. When the distal end of the cam 304b conflicts with the lock tongue 302, the lock tongue 302 can be disengaged from the lock slot 201 at the end of the lock beam 200 (for example, Figure 8 (as shown), thereby achieving unlocking. When the proximal end of the cam 304b contacts the lock tongue 302, the lock tongue 302 can be locked with the lock groove 201 at the end of the lock beam 200, thereby achieving locking. The elastic element 305b can be used to maintain the lock tongue 302 in contact with the cam 304b. Conflict in this specification means that the lock tongue 302 and the cam 304b are in contact with each other and squeeze each other (have a tendency to squeeze each other). In some exemplary embodiments, the elastic element 305b can be, for example, a coil spring, a torsion bar spring, a gas spring, or a rubber spring.

[0133] Those skilled in the art will understand that Figure 5 、 Figure 7 and Figure 8 The unlocking mechanism shown is only an example. Without departing from the spirit and principles of this application, the passive electronic lock can adopt any suitable unlocking mechanism. This specification does not limit this, and the specific unlocking mechanism can be selected according to needs.

[0134] For the convenience of description, the above devices are described as being divided into various units according to their functions. Of course, when implementing this specification, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0135] Corresponding to the above passive electronic lock, this specification also provides a control method for the passive electronic lock. Figure 12 As shown, in some embodiments of this specification, the control method of the passive electronic lock may include:

[0136] S121. When the energy collection unit receives an energy signal provided by the radio frequency key, the energy collection unit charges the energy storage unit based on the energy signal.

[0137] S122: When the locking and unlocking mechanism is in the locked state and the power level of the energy storage unit is higher than a first threshold, verify the identity of the radio frequency key.

[0138] S123: When the radio frequency key passes identity authentication, control the locking and unlocking mechanism to perform unlocking.

[0139] S124. When the power level of the energy storage unit is higher than a second threshold, the control state prompt unit outputs an unlock state prompt to reserve power required for locking.

[0140] In some embodiments of this specification, the control method of the passive electronic lock may further include:

[0141] If the lock beam does not change from the pushed-in position to the pulled-out position within the timing period, the locking and unlocking mechanism is controlled to perform locking; the timing period starts when the status prompt unit outputs the unlocking status prompt.

[0142] In some embodiments of this specification, the control method of the passive electronic lock may further include:

[0143] After the status prompt unit outputs the unlock status prompt, the passive electronic lock is controlled to enter a dormant state.

[0144] In some embodiments of this specification, the control method of the passive electronic lock may further include:

[0145] When the passive electronic lock is in a dormant state, if the lock beam changes from a pulled-out position to a pushed-in position, the locking and unlocking mechanism is controlled to perform locking.

[0146] In some embodiments of this specification, the control method of the passive electronic lock may further include:

[0147] When the radio frequency key fails to pass identity authentication, the locking state of the locking and unlocking mechanism is maintained, and the remaining power of the energy storage unit is actively exhausted.

[0148] In some embodiments of this specification, the control method of the passive electronic lock may further include:

[0149] After controlling the locking and unlocking mechanism to execute locking, the remaining power of the energy storage unit is actively exhausted.

[0150] Corresponding to the above-mentioned control method of the passive electronic lock, some embodiments of this specification also provide a computer storage medium (eg Figure 13 A memory in a processor) having a computer program stored thereon, which, when executed by the processor, implements the following steps:

[0151] When the energy collection unit receives the energy signal provided by the radio frequency key, the energy collection unit charges the energy storage unit based on the energy signal.

[0152] When the locking and unlocking mechanism is in a locked state, and the power level of the energy storage unit is higher than a first threshold, the identity of the radio frequency key is verified.

[0153] When the radio frequency key passes the identity verification, the locking and unlocking mechanism is controlled to perform unlocking.

[0154] When the power level of the energy storage unit is higher than a second threshold, the control state prompt unit outputs an unlock state prompt to reserve power required for locking.

[0155] Although the process flows described above include multiple operations occurring in a particular order, it should be understood that these processes may include more or fewer operations, which may be performed sequentially or in parallel (eg, using parallel processors or a multi-threaded environment).

[0156] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present specification. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0157] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0158] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0159] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0160] Memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.

[0161] Computer-readable media includes permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory computer-readable media (transitory media), such as modulated data signals and carrier waves.

[0162] Those skilled in the art will appreciate that the embodiments of this specification may be provided as methods, systems, or computer program products. Thus, the embodiments of this specification may take the form of a fully hardware implementation, a fully software implementation, or an implementation combining software and hardware aspects. Furthermore, the embodiments of this specification may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0163] The embodiments of the present specification may be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The embodiments of the present specification may also be practiced in distributed computing environments where tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules may be located in local and remote computer storage media, including storage devices.

[0164] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the method embodiment, since it is basically similar to the device embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the device embodiment. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of this specification. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples without contradiction.

[0165] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A passive electronic lock, characterized in that: include: A locking and unlocking mechanism, used to perform locking or unlocking; A status prompting unit, used to prompt the status of the locking and unlocking mechanism; Energy storage unit; an energy collection unit, configured to charge the energy storage unit based on an energy signal provided by a radio frequency key when the energy signal is received; A control unit is configured to, when the locking and unlocking mechanism is in a locked state and the power level of the energy storage unit is higher than a first threshold, verify the identity of the radio frequency key, control the locking and unlocking mechanism to perform unlocking when the radio frequency key passes the identity authentication, and, after controlling the locking and unlocking mechanism to perform unlocking, control the status prompt unit to output an unlocking status prompt when the power level of the energy storage unit is higher than a second threshold, so as to reserve the power required for locking.

2. The passive electronic lock according to claim 1, characterized in that: The passive electronic lock further comprises: The position detection unit is arranged in the lock body and is used to detect the position of the lock beam and provide the detection result to the control unit.

3. The passive electronic lock according to claim 1, characterized in that: The control unit is further configured to: After the status prompt unit outputs the unlock status prompt, if the lock beam does not change from the pushed position to the pulled position within the timing period, the locking and unlocking mechanism is controlled to perform locking; the timing period starts when the status prompt unit outputs the unlock status prompt.

4. The passive electronic lock according to claim 1, characterized in that: The control unit is further configured to: After the status prompt unit outputs the unlock status prompt, the passive electronic lock is controlled to enter a dormant state.

5. The passive electronic lock according to claim 4, characterized in that: The control unit is further configured to: When the passive electronic lock is in a dormant state, if the lock beam changes from a pulled-out position to a pushed-in position, the locking and unlocking mechanism is controlled to perform locking.

6. The passive electronic lock according to claim 1, characterized in that: The control unit is further configured to: When the radio frequency key fails to pass identity authentication, the locking state of the locking and unlocking mechanism is maintained, and the remaining power of the energy storage unit is actively exhausted.

7. The passive electronic lock according to claim 3 or 5, characterized in that: The control unit is further configured to: After controlling the locking and unlocking mechanism to execute locking, the remaining power of the energy storage unit is actively exhausted.

8. The passive electronic lock according to claim 1, characterized in that: The energy storage unit comprises: Energy input and output terminals; a capacitor electrically connected to the energy input and output terminals; a controllable switch, connected in series between the capacitor and the energy input and output terminals and controlled by the control unit, for controlling the charging and discharging of the capacitor; The fact that the charge of the energy storage unit is higher than a first threshold value includes that the charge of the capacitor is higher than a first threshold value; and the fact that the charge of the energy storage unit is higher than a second threshold value includes that the charge of the capacitor is higher than a second threshold value.

9. The passive electronic lock according to claim 1, characterized in that: The energy storage unit comprises: Energy input and output terminals; a first capacitor electrically connected to the energy input and output terminals; a first controllable switch connected in series between the first capacitor and the energy input and output terminal and controlled by the control unit, for controlling the charging and discharging of the first capacitor; a second capacitor electrically connected to the energy input and output terminals; a second controllable switch connected in series between the second capacitor and the energy input and output terminal and controlled by the control unit, for controlling the charging and discharging of the second capacitor; Among them, the power of the energy storage unit is higher than the first threshold value, which includes: the sum of the power of the first capacitor and the second capacitor is higher than the first threshold value, and the first threshold value at least meets the power required to perform one unlocking and one locking; the power of the energy storage unit is higher than the second threshold value, which includes: the power of one of the first capacitor and the second capacitor is higher than the second threshold value.

10. The passive electronic lock according to claim 1, characterized in that: The locking and unlocking mechanism comprises: A cavity bracket is arranged in the lock body; A locking tongue is movably arranged on the cavity support; an elastic element for maintaining the lock tongue in contact with the lock beam; Motor; A limit baffle is fixedly connected to the output shaft of the motor; when the lock beam is in the pushed-in position, when the limit baffle is in a blocking position overlapping with the lock tongue, the lock tongue is fixed; when the limit baffle is in a release position staggered from the lock tongue, the lock tongue is released.

11. The passive electronic lock according to claim 1, wherein: The locking and unlocking mechanism comprises: A cavity bracket is arranged in the lock body; Motor; The locking tongue is movably arranged on the cavity bracket and is threadedly connected to the output shaft of the motor. Under the drive of the output shaft, the locking tongue can move axially to achieve locking or separation between the locking tongue and the lock beam.

12. The passive electronic lock according to claim 1, wherein: The locking and unlocking mechanism comprises: A cavity bracket is arranged in the lock body; A locking tongue is movably arranged on the cavity support; Motor; a cam fixed to the output shaft of the motor, wherein when the distal end of the cam contacts the lock tongue, the lock tongue is disengaged from the lock beam, and when the proximal end of the cam contacts the lock tongue, the lock tongue is locked to the lock beam; An elastic element is used to maintain the locking tongue in contact with the cam.

13. A control method for a passive electronic lock, characterized in that: include: When the energy collection unit receives the energy signal provided by the radio frequency key, the energy collection unit charges the energy storage unit based on the energy signal; When the locking and unlocking mechanism is in a locked state, when the power level of the energy storage unit is higher than a first threshold, verifying the identity of the radio frequency key; When the radio frequency key passes the identity verification, controlling the locking and unlocking mechanism to perform unlocking; After controlling the locking and unlocking mechanism to perform unlocking, when the power level of the energy storage unit is higher than a second threshold, the control state prompt unit outputs an unlocking state prompt to reserve power required for locking.

14. The control method according to claim 13, wherein: The control method further includes: If the lock beam does not change from the pushed-in position to the pulled-out position within the timing period, the locking and unlocking mechanism is controlled to perform locking; the timing period starts when the status prompt unit outputs the unlocking status prompt.

15. The control method according to claim 13, wherein: The control method further includes: After the status prompt unit outputs the unlock status prompt, the passive electronic lock is controlled to enter a dormant state.

16. The control method according to claim 15, wherein: The control method further includes: When the passive electronic lock is in a dormant state, if the lock beam changes from a pulled-out position to a pushed-in position, the locking and unlocking mechanism is controlled to perform locking.

17. The control method according to claim 13, wherein: The control method further includes: When the radio frequency key fails to pass identity authentication, the locking state of the locking and unlocking mechanism is maintained, and the remaining power of the energy storage unit is actively exhausted.

18. The control method according to claim 14 or 16, characterized in that: The control method further includes: After controlling the locking and unlocking mechanism to execute locking, the remaining power of the energy storage unit is actively exhausted.

19. The control method according to claim 13, wherein: The energy storage unit comprises: Energy input and output terminals; a capacitor electrically connected to the energy input and output terminals; a controllable switch connected in series between the capacitor and the energy input and output terminals and controlled by a control unit for controlling the charging and discharging of the capacitor; The fact that the charge of the energy storage unit is higher than a first threshold value includes that the charge of the capacitor is higher than a first threshold value; and the fact that the charge of the energy storage unit is higher than a second threshold value includes that the charge of the capacitor is higher than a second threshold value.

20. The control method according to claim 13, wherein: The energy storage unit comprises: Energy input and output terminals; a first capacitor electrically connected to the energy input and output terminals; a first controllable switch connected in series between the first capacitor and the energy input and output terminal and controlled by a control unit, for controlling the charging and discharging of the first capacitor; a second capacitor electrically connected to the energy input and output terminals; a second controllable switch connected in series between the second capacitor and the energy input and output terminal and controlled by a control unit for controlling the charging and discharging of the second capacitor; Among them, the power of the energy storage unit is higher than the first threshold value, which includes: the sum of the power of the first capacitor and the second capacitor is higher than the first threshold value, and the first threshold value at least meets the power required to perform one unlocking and one locking; the power of the energy storage unit is higher than the second threshold value, which includes: the power of one of the first capacitor and the second capacitor is higher than the second threshold value.

21. A computer storage medium having a computer program stored thereon, characterized in that: The computer program is executed by a processor to execute the control method according to any one of claims 13 to 20.

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