A method for opening a door using a Bluetooth induction lock

Abstract

The present invention provides a method for opening a door using a Bluetooth induction lock, which belongs to the technical field of intelligent door locks; the method for opening a door using a Bluetooth induction lock comprises the following steps: S1: receiving an unlocking signal from a Bluetooth key, and performing security authentication on the Bluetooth key, and if the authentication is passed, executing the next step; S2: detecting the distance of a user outside the door; S3: determining whether the user outside the door is within a preset door opening distance, and if so, executing the next step; S4: unlocking; the method for opening a door using a Bluetooth induction lock of the present invention, when the unlocking signal from the Bluetooth key is received, if the user is not within the door opening distance range, the door lock cannot be opened, thereby increasing the safety performance of the Bluetooth induction lock.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent door locks, and in particular to a door opening method of a Bluetooth induction lock. Background Art

[0002] As people's living standards improve, higher requirements are placed on the intelligence of locks, which are mainly reflected in the humanization and intelligence of their functions and operations.

[0003] The current process of opening the door with Bluetooth smart door locks on the market is as follows: when the Bluetooth smart door lock only needs to identify that the mobile phone or Bluetooth key is outside the door and belongs to the legitimate user, it can open the door. When the user is far away from the door or even has not seen the door, the Bluetooth smart door lock may interact with the user's mobile phone or Bluetooth key to open the door, resulting in poor security. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of poor safety of the Bluetooth smart door lock in the prior art when opening the door by induction, thereby providing a method for opening the door of a Bluetooth induction lock with better safety performance.

[0005] In order to solve the above technical problems, the method for opening a door using a Bluetooth induction lock provided by the present invention comprises the following steps:

[0006] S1: receiving an unlocking signal from a Bluetooth key, and performing security authentication on the Bluetooth key. If the authentication is successful, proceed to the next step;

[0007] S2: Detect the user distance outside the door;

[0008] S3: Determine whether the user outside the door is within the preset door opening distance, if yes, proceed to the next step;

[0009] S4: Unlock.

[0010] As a preferred solution, in step S2, the distance of the user outside the door is detected by a radar ranging module.

[0011] As a preferred solution, it is characterized in that it also includes the following steps:

[0012] S12: After the Bluetooth key passes the security authentication, determine whether the Bluetooth key is outside the door. If yes, proceed to the next step.

[0013] As a preferred solution, in step S12, the unlocking signal of the Bluetooth key is received by a Bluetooth directional antenna to determine the strength of the unlocking signal emitted by the Bluetooth key, and whether the Bluetooth key is outside the door is determined based on the strength.

[0014] As a preferred solution, the Bluetooth directional antenna points to the outside of the door, and whether the Bluetooth key is outside the door is determined based on whether the received unlocking signal of the Bluetooth key is greater than a preset threshold.

[0015] As a preferred solution, the preset threshold is determined by taking the strongest signal in the gate as a reference signal and adding a revised value to the reference signal.

[0016] As a preferred solution, the revision value is 5-10db.

[0017] As a preferred solution, the Bluetooth key is a mobile communication device with a SIM card inserted therein, and a Bluetooth transmitting module is integrated on the SIM card.

[0018] A door opening system of a Bluetooth induction lock, comprising: a Bluetooth induction lock and a Bluetooth key, wherein the Bluetooth induction lock comprises:

[0019] A Bluetooth sensing module, used for receiving an unlocking signal from the Bluetooth key and sending the unlocking signal to a control module;

[0020] The radar ranging module is used to detect the distance of the user outside the door and send the detection signal to the control module;

[0021] The control module is used to receive the signals from the Bluetooth sensing module and the radar ranging module respectively, and judge whether the Bluetooth key has passed the security authentication and whether the user has moved to a preset distance outside the door, and is used to send a signal to unlock the door.

[0022] As a preferred solution, the Bluetooth key is a mobile communication device with a SIM card inserted therein, and a Bluetooth transmitting module is integrated on the SIM card.

[0023] As a preferred solution, a security chip is also integrated on the SIM card, and the security chip is used to protect the information of the Bluetooth key.

[0024] As a preferred solution, it is characterized in that the Bluetooth sensing module uses a Bluetooth directional antenna to detect the strength of the unlocking signal received from the Bluetooth key, and the Bluetooth directional antenna points to the outside of the door and is connected to the control module signal. The technical solution of the present invention has the following advantages:

[0025] 1. The door opening method of the Bluetooth induction lock provided by the present invention, after receiving the signal of the Bluetooth key, also includes detecting the distance of the user outside the door. The door lock can only be opened when the user is at a preset door opening distance; when the user is not within the door opening distance range, the door lock cannot be opened even if the signal of the Bluetooth transmitting module is received; the setting of the door opening distance increases the safety performance of the Bluetooth induction lock.

[0026] 2. The door opening method of the Bluetooth induction lock provided by the present invention adopts a radar ranging module to detect the user distance outside the door, which can stably, accurately, highly sensitively and at high speed measure the distance, thereby realizing accurate distance sensing door opening.

[0027] 3. The door opening method of the Bluetooth induction lock provided by the present invention also includes the judgment of whether the Bluetooth transmitting module is outside the door or inside the door. Only when the Bluetooth transmitting module meets the condition of being outside the door can the next step of user distance measurement operation be executed, thereby avoiding the situation where the door lock is opened when the user is inside the door.

[0028] 4. The door opening method of the Bluetooth induction lock provided by the present invention has a large forward gain of the Bluetooth directional antenna, which can suppress the backward signal and increase the anti-interference ability; when the Bluetooth directional antenna points to the outside of the door, the difference between the front and rear signals is obvious, and the signal inside the door is weak. The strongest signal inside the door is used as the reference signal to compare with the signal outside the door. The difference between the inside and outside of the door can be used to easily determine whether the Bluetooth transmitting module is outside the door, and the judgment is more accurate.

[0029] 5. The Bluetooth induction lock door opening system provided by the present invention, the Bluetooth key is a mobile communication device with a SIM card inserted, adopts the induction method of the Bluetooth SIM card, and does not need to open a special Bluetooth unlocking APP, which is more convenient to use.

[0030] 6. The Bluetooth induction lock door opening system provided by the present invention and the setting of the security chip make the Bluetooth interaction between the Bluetooth key and the Bluetooth induction lock fully encrypted, which is more secure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 This is a schematic diagram of the door opening system of the Bluetooth induction lock provided in the present invention.

[0033] Figure 2 The present invention is a flowchart of a method for opening a door using a Bluetooth induction lock.

[0034] Figure 3 This is a registration flow chart of the Bluetooth key provided in the present invention. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] Example 1

[0040] like Figure 1 As shown, this example provides a door opening system of a Bluetooth induction lock, including: a Bluetooth induction module, a radar ranging module and a control module arranged in the Bluetooth induction lock, and also includes: a Bluetooth key.

[0041] The radar ranging module is used to detect the user distance outside the door and send a detection signal to the control module.

[0042] The Bluetooth sensing module is used to receive the unlocking signal from the Bluetooth transmitting module and send the signal to the control module.

[0043] The Bluetooth key is a mobile communication device with a SIM card inserted, and the SIM card is integrated with a Bluetooth transmitter module; the mobile communication device is a mobile phone, and the Bluetooth transmitter module can automatically send signals to the Bluetooth sensor module through the power of the mobile phone; the SIM card is also integrated with a security chip, and the security chip is used to protect the information of the Bluetooth key. In addition, as an alternative implementation, the mobile phone can also use other mobile communication devices suitable for inserting a SIM card.

[0044] The Bluetooth sensing module uses a Bluetooth directional antenna to detect the strength of the unlocking signal received from the Bluetooth key. The Bluetooth directional antenna points to the outside of the door and is connected to the control module signal.

[0045] The control module receives the signals from the Bluetooth sensing module and the radar ranging module respectively, and determines whether the Bluetooth key has passed the security authentication, whether the user is outside the door, and whether the user has moved to a preset distance outside the door, and sends a signal to unlock the door.

[0046] Example 2

[0047] This example provides a method for unlocking a Bluetooth induction lock. Figure 2 As shown, the following steps are included:

[0048] Step S1: receiving the unlocking signal of the Bluetooth key, and performing security authentication on the Bluetooth key, if the authentication is passed, executing the next step; wherein, the Bluetooth key is a mobile communication device with a SIM inserted, and the mobile communication device is integrated with a Bluetooth transmitting module, and the Bluetooth transmitting module can automatically send a signal toward the Bluetooth sensing module through the power supply of the mobile communication device; when the mobile communication device is close to the Bluetooth sensing lock, the Bluetooth sensing module on the Bluetooth sensing lock automatically scans and receives the signal of the Bluetooth transmitting module, and connects to the mobile communication by Bluetooth; for the safety of the Bluetooth sensing lock to open the door and prevent malicious door opening, after the Bluetooth sensing lock is connected to the mobile communication by Bluetooth, the Bluetooth sensing lock performs security authentication on the mobile communication device, and the security authentication algorithm adopts the AES algorithm, and the key of each Bluetooth key security algorithm is unique.

[0049] Step S12: After the Bluetooth key passes the security authentication, determine whether the Bluetooth key is outside the door. If yes, proceed to the next step. Specifically, the Bluetooth induction lock is integrated with a Bluetooth directional antenna, and the Bluetooth directional antenna points to the outside of the door. When the signal strength of the Bluetooth transmitting module received by the Bluetooth directional antenna is greater than a preset threshold, it is determined that the Bluetooth key is outside the door. The preset threshold is determined by taking the strongest signal inside the door as the reference signal and adding a revised value of 5 to 10 db to the reference signal.

[0050] Step S2: Detecting the user distance outside the door. Specifically, the Bluetooth induction lock is integrated with a radar ranging module, and the radar ranging module adopts a TOF laser radar, and detects the user distance outside the door through the radar ranging module.

[0051] Step S3: Determine whether the user outside the door is within the preset door opening distance, if yes, proceed to the next step. The radar ranging module sends a detection signal to the control module, and the control module determines whether the user is within the preset door opening distance.

[0052] Step S4: Unlock.

[0053] In this embodiment, before unlocking the door, the Bluetooth key needs to be registered first.

[0054] like Figure 3 As shown, the steps to register a Bluetooth key are as follows:

[0055] Step 1: Bluetooth PIN code setting; When using Bluetooth induction to open the door, the prerequisite is that Bluetooth authentication is required. Each Bluetooth key has a unique PIN code, which is the key of the Bluetooth authentication algorithm. When the Bluetooth induction lock is connected to the user's Bluetooth key, the Bluetooth key uses the PIN code to perform security authentication according to the Bluetooth security authentication process. Only after the security authentication is passed can the Bluetooth induction door be opened.

[0056] On the APP client, the user follows the APP registration Bluetooth key operation prompts and enters the Bluetooth key PIN code. After the Bluetooth sensor lock receives the APP client's Bluetooth key registration command, the system will generate a user information list, which includes the Bluetooth key PIN code, Bluetooth sensor door opening distance, and Bluetooth sensor door opening reference signal inside the door.

[0057] Step 2: Measurement of the signal inside the door; after the Bluetooth induction lock completes the Bluetooth PIN code setting, the Bluetooth induction lock initiates the step of measuring the signal inside the door, obtains the signal of the Bluetooth key every 200ms and sends it to the APP client. The user searches for the Bluetooth signal about 1 meter inside the door. The APP client will automatically record the strongest signal inside the door. After the user completes the search and clicks the OK button, the reference signal inside the door is sent to the Bluetooth induction lock. After receiving it, the Bluetooth induction lock saves the reference signal value inside the door into the user information table.

[0058] Step 3: Setting the distance for opening the door outside the door; When registering the Bluetooth key, the distance for opening the door outside the door needs to be set. When the Bluetooth key user opens the door, the set distance for opening the door must be reached; When registering the Bluetooth key, after completing the signal measurement step inside the door, the distance for opening the door outside the door is set. The Bluetooth sensor lock initiates the step for setting the distance for opening the door outside the door. The Bluetooth sensor lock uploads the distance between the user and the Bluetooth sensor lock to the APP client every 200ms. The distance message will be displayed in real time on the APP interface for the user to view. After the user clicks the OK button on the APP interface, the distance setting for opening the door outside is completed.

[0059] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A method for opening a door using a Bluetooth induction lock, characterized in that: The following steps are involved: Register the Bluetooth key. The steps to register the Bluetooth key are as follows: Step 1: Bluetooth PIN code setting; When opening the door with Bluetooth induction, the prerequisite is that Bluetooth authentication is required. Each Bluetooth key has a unique PIN code, which is the key of the Bluetooth authentication algorithm. When the Bluetooth induction lock is connected to the user's Bluetooth key, the Bluetooth key will perform security authentication according to the Bluetooth security authentication process through the PIN code. Only after the security authentication is passed can the Bluetooth induction door be opened; On the APP client, the user follows the APP registration Bluetooth key operation prompt and enters the Bluetooth key PIN code. After the Bluetooth induction lock receives the APP client's Bluetooth key registration instruction, the system will generate a user information list, which includes the Bluetooth key PIN code, Bluetooth induction door opening distance, and Bluetooth induction door opening reference signal; Step 2: Measure the signal inside the door; obtain the signal of the Bluetooth key every 200ms and send it to the APP client. The user searches for the Bluetooth signal inside the door. The APP client will automatically record the strongest signal inside the door. After the user completes the search and clicks the OK button, the reference signal inside the door is sent to the Bluetooth induction lock. After the Bluetooth induction lock receives it, it saves the reference signal value inside the door into the user information list. Step 3: Setting the distance for opening the door outside; the Bluetooth induction lock uploads the distance between the user and the Bluetooth induction lock to the APP client every 200ms, and the distance message will be displayed in real time on the APP interface. After the user clicks the OK button on the APP interface, the setting of the distance for opening the door outside is completed; After registration is completed, you can perform the unlocking steps. The unlocking steps are as follows: S1: receiving the unlocking signal of the Bluetooth key, and performing security authentication on the Bluetooth key. If the authentication is passed, the unlocking signal of the Bluetooth key is received through the Bluetooth directional antenna to determine the strength of the unlocking signal emitted by the Bluetooth key, and judging whether the Bluetooth key is outside the door according to the strength. If yes, executing the next step, wherein the Bluetooth directional antenna points to the outside of the door, and judges whether the Bluetooth key is outside the door based on the standard that the received unlocking signal of the Bluetooth key is greater than a preset threshold. The preset threshold is determined based on the strongest signal inside the door as the reference signal, and a revised value is added on the basis of the reference signal. The Bluetooth key is a mobile communication device with a SIM card inserted, and the SIM card is integrated with a Bluetooth transmitting module, and the SIM card is also integrated with a security chip, and the security chip is used to protect the information of the Bluetooth key; S2: Detect the user distance outside the door; S3: Determine whether the user outside the door is within the preset door opening distance, if yes, proceed to the next step; S4: Unlock.

2. The method for opening a door using a Bluetooth induction lock according to claim 1, characterized in that: In the step S2, the distance of the user outside the door is detected by a radar ranging module.

3. The method for opening a door using a Bluetooth induction lock according to claim 1, characterized in that: The revision value is 5 to 10 db.

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