A detection system for intelligent door locks

Abstract

A detection system for a smart door lock relates to the technical field of smart door locks, comprising a smart door lock device and a detection device. The smart door lock device is internally provided with a detection device, and the detection device comprises an anti-lock detection module, a key rotation detection module, a voice playback module, a single-chip microcomputer U1 and a power supply module. The detection system of the smart door lock can detect in real time whether the smart door lock is anti-locked and the specific state of the lock cylinder. The user only needs to use a mobile terminal to obtain specific information of the smart door lock, and the user does not need to directly observe the specific rotation position of the safety knob to know whether the smart door lock is in the anti-lock state, which is convenient to use. At the same time, when there are criminals outside who perform unconventional unlocking of the smart door lock when it is not in the anti-lock state, an alarm can be processed, and the safety factor is high.

Description

Technical Field

[0001] The present invention relates to the technical field of smart door locks, and in particular to a detection system for a smart door lock. Background Art

[0002] At present, all existing smart door locks on the market have an anti-lock function. Usually, the rotation of the safety knob on the inner lock panel drives the rotation of the paddle, which in turn pushes out the safety tongue on the lock body, so that the smart door lock is anti-locked. This prevents criminals from using tools from the outside to open the door in an unconventional way, thereby affecting the property and even personal safety inside the door. At the same time, because of concerns about the battery running out or sudden short circuit power failure in the smart door lock, we usually add a corresponding mechanical lock structure to the smart door lock to ensure that the key can be used to open the door normally even when the electronic door lock is powered off.

[0003] However, this type of smart door lock does not perform real-time detection on the anti-lock function and key door opening detection function. The system does not know whether it is currently anti-locked or the specific status of the lock cylinder. The user needs to directly see the specific rotation position of the safety knob to know whether the smart door lock is in the anti-lock state, which is inconvenient to use. At the same time, criminals can use tools to unlock the mechanical lock structure inside the smart door lock when the smart door lock is not anti-locked, which poses a safety hazard.

[0004] In view of these problems, how to provide a detection system that can detect in real time whether the smart door lock is locked and the specific status of the lock cylinder is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a detection system for a smart door lock, including a smart door lock device and a detection device, wherein the smart door lock device is internally provided with a detection device, and the detection device includes an anti-lock detection module, a key rotation detection module, a voice playback module, a single-chip microcomputer U1 and a power module, wherein the output ends of the anti-lock detection module and the key rotation detection module are electrically connected to the single-chip microcomputer U1 respectively, the single-chip microcomputer U1 is electrically connected to the input end of the voice playback module, the single-chip microcomputer U1 is electrically connected to the power module via a wire, and the single-chip microcomputer U1 is also grounded GND via a wire;

[0006] The smart door lock device includes an inner locking mechanism and an outer locking mechanism, the inner locking mechanism includes a handle assembly A, a safety assembly and a panel A, the panel A is provided with a handle mounting hole A and a safety mounting hole, the handle mounting hole A is located directly above the safety mounting hole, the connecting end of the handle assembly A passes through the handle mounting hole A and is connected to the external lock body, the connecting end of the safety assembly passes through the safety mounting hole and is hinged to the paddle, the safety assembly includes a safety knob and a fixing part, the bottom of the safety knob is fixedly connected to the bottom of the panel A at the connection with the fixing part, the fixing part is composed of a rectangular base plate and a rhombus, the length from the end of the two symmetrical angles of the rhombus to the midpoint of the rhombus is greater than the length from the end of the other two symmetrical angles to the midpoint of the rhombus;

[0007] The external locking mechanism includes a handle assembly B, a lock core and a panel B. The panel B is provided with a handle mounting hole B. The connecting end of the handle assembly B passes through the handle mounting hole B and is connected to the external lock body. A lock core is installed at the bottom of the panel B, and a through hole is provided on the rotating shaft of the lock core.

[0008] Preferably, the anti-lock detection module includes a travel switch K1 and a resistor R1. The travel switch K1 is installed inside the panel A and is close to the diamond column on the fixing part. One end of the travel switch K1 is grounded and the other end is electrically connected to the single-chip microcomputer. One end of the resistor R1 is connected to the connection between the travel switch K1 and the single-chip microcomputer U1, and the other end of the resistor R1 is electrically connected to the external power supply 3.3V.

[0009] Preferably, the key rotation detection circuit includes a normally closed reed switch H1, a cylindrical magnet M1 and a resistor R2. The normally closed reed switch H1 is installed on the panel B and is horizontally arranged with the lock core. One end of the normally closed reed switch H1 is grounded, and the other end is electrically connected to the microcontroller U1. One end of the resistor R2 is connected to the connection between the normally closed reed switch H1 and the microcontroller U1, and the other end of the resistor R2 is electrically connected to the external power supply 3.3V. The cylindrical magnet M1 is installed on the through hole of the rotating shaft of the lock core and is horizontally arranged with the normally closed reed switch H1.

[0010] Preferably, the voice playing circuit includes a voice chip U2 and a speaker SP1, the input end of the voice chip U2 is electrically connected to the single chip microcomputer U1, and the output end of the voice chip U2 is electrically connected to at least one speaker SP1.

[0011] Furthermore, the detection system of the smart door lock also includes a zigbee module and a Bluetooth module. The zigbee module is electrically connected to the single-chip microcomputer U1, and the zigbee module is also wirelessly connected to the external mobile terminal through the gateway. The Bluetooth module is electrically connected to the single-chip microcomputer U1, and the Bluetooth module is connected to the external mobile terminal via Bluetooth.

[0012] Compared with the prior art, the present invention can detect in real time whether the smart door lock is in the reverse locked state and the specific state of the lock cylinder. The user only needs to use the mobile terminal to obtain the specific information of the smart door lock, and the user does not need to directly observe the specific rotation position of the safety knob to know whether the smart door lock is in the reverse locked state, which is convenient to use. At the same time, when there are criminals outside who perform unconventional unlocking of the smart door lock when it is not in the reverse locked state, an alarm can be issued, and the safety factor is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A circuit diagram of a detection device of a detection system for an intelligent door lock of the present invention;

[0014] Figure 2 This is a schematic diagram of the structure of the detection system of the intelligent door lock of the present invention;

[0015] Figure 3 This is a schematic diagram of the structure of the inner locking mechanism of the detection system of the smart door lock of the present invention;

[0016] Figure 4 This is a schematic diagram of the structure in which the diamond-shaped cylinder of the detection system of the smart door lock of the present invention is in contact with but not in close contact with the travel switch K1;

[0017] Figure 5 for Figure 4 A local enlarged view of point A;

[0018] Figure 6 This is a schematic diagram of the structure of the detection system of the invented smart door lock, in which the diamond-shaped cylinder is in contact and close contact with the limit switch K1;

[0019] Figure 7 for Figure 6 A local enlarged view of point B;

[0020] Figure 8 This is a schematic diagram of the structure of the insurance component of the detection system of the smart door lock of the present invention;

[0021] Figure 9 This is a schematic structural diagram of the external locking mechanism of the detection system of the smart door lock of the present invention;

[0022] Figure 10 for Figure 9 A local enlarged view of point C;

[0023] Figure 11 This is a schematic structural diagram of the lock core of the detection system of the smart door lock of the present invention;

[0024] Figure 12 This is a flowchart of the detection system of the smart door lock of the present invention connected to an external mobile terminal.

[0025] Figures 1-12 middle:

[0026] 101. Handle assembly A, 102. Safety knob, 103. Fixing part, 1031. Rectangular base plate, 1032. Diamond cylinder, 104. Panel A, 201. Handle assembly B, 202. Lock cylinder, 203. Panel B, 204. Through hole, 3. Lock body, 4. Paddle, 5. Travel switch K1, 6. Normally closed reed switch H1, 7. Speaker SP1, 8. Zigbee module, 9. Bluetooth module, 10. Gateway, 11. Mobile terminal, 12. Cylindrical magnet M1. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] The words "close" or "far away" used in this article to describe the position status of the cylindrical magnet M112 and the normally closed reed switch H16 in the through hole 204 of the rotating shaft of the lock core 202 are all used to specifically describe the real-time status of the detection system of this intelligent door lock. For example, when the single-chip computer U1 is set to the position where the cylindrical magnet M112 and the normally closed reed switch H16 are closest to each other, an unlocking signal is issued. On the contrary, when the cylindrical magnet M112 and the normally closed reed switch H16 are closest to each other, an unlocking signal is issued. 6 When away from, it can also be a signal that the door is not unlocked. At the same time, the microcontroller U1 sends out start signal A, start signal B, abnormal signal A, abnormal signal B, abnormal signal C and contact signal, etc., which can also express the meaning of the signal transmission of the microcontroller U1 of the detection system of the smart door lock. And because the microcontroller has the function of deep learning, it only needs to be set accordingly before it leaves the factory. Therefore, as long as the functions of anti-lock detection and key rotation detection are met, they are all technical solutions defined by this application. Obviously, the use of the above-mentioned directional words is only used to clearly understand the essential content of this solution, and does not constitute a limitation on the scope of protection of this application.

[0029] like Figure 1-2 As shown, the detection system of the smart door lock includes a smart door lock device and a detection device. The smart door lock device is internally provided with a detection device, and the detection device includes an anti-lock detection module, a key rotation detection module, a voice playback module, a single-chip microcomputer U1 and a power module. The single-chip microcomputer U1 is STM32L071VBT6 and is packaged in LQFP100.

[0030] The output ends of the anti-lock detection module and the key rotation detection module are respectively electrically connected to the single-chip computer U1, the single-chip computer U1 is electrically connected to the input end of the voice playback module, the single-chip computer U1 is electrically connected to the power module through a wire, and the single-chip computer U1 is also grounded to GND through a wire; with the single-chip computer U1 as a transit hub, when the anti-lock detection module and the key rotation detection module output an abnormal signal A to the single-chip computer U1, the single-chip computer U1 can compare it with the abnormal signal B recorded in advance, start sending an abnormal signal C to the external mobile terminal 11, and at the same time start the voice playback module to issue an abnormal alarm voice; and the power module supplies power to the single-chip computer U1 for normal operation, and its power module is a 3.3V external DC power supply.

[0031] like Figure 3-8 As shown, the smart door lock device includes an inner locking mechanism and an outer locking mechanism, the inner locking mechanism includes a handle assembly A101, a safety assembly and a panel A104, the panel A104 is provided with a handle mounting hole A and a safety mounting hole, the handle mounting hole A is located directly above the safety mounting hole, the connecting end of the handle assembly A101 passes through the handle mounting hole A and is connected to the external lock body 3, the connecting end of the safety assembly passes through the safety mounting hole and is hinged to the paddle 4, the safety assembly includes a safety knob 102 and a fixing member 103, and the fixing member 103 is fixedly connected to the connection between the bottom of the safety knob 102 and the bottom of the panel A104;

[0032] The fixing member 103 is composed of a rectangular base plate 1031 and a diamond-shaped column 1032, wherein the length from the ends of the two symmetrical angles of the diamond column 1032 to the midpoint of the diamond column 1032 is greater than the length from the ends of the other two symmetrical angles to the midpoint of the diamond column 1032; when the user rotates the safety knob 102, the fixing member 103 fixedly connected to the safety knob 102 will be driven to rotate, and because the top of the fixing member 103 is the diamond-shaped column 1032 and the length from the ends of the two symmetrical angles of the diamond column 1032 to the midpoint of the diamond column 1032 is greater than the length from the ends of the other two symmetrical angles to the midpoint of the diamond column 1032, when it rotates, when the two ends of the longer diamond column 1032 are in a horizontal position, the anti-lock detection circuit will be in a connected state, and on the contrary, when the two ends of the shorter diamond column 1032 are in a horizontal position, the anti-lock detection circuit will be in a disconnected state.

[0033] like Figure 9 and Figure 11As shown, the external locking mechanism includes a handle assembly B201, a lock core 202 and a panel B203. The panel B203 is provided with a handle mounting hole B. The connecting end of the handle assembly B201 passes through the handle mounting hole B and is connected to the external lock body 3. The bottom of the panel B203 is installed with a lock core 202, and a through hole 204 is provided on the rotating shaft of the lock core 202; by inserting the corresponding key into the lock core 202 and turning the key at the same time, the rotating shaft of the lock core 202 can be rotated, and the rotation of the rotating shaft drives the rotation of the through hole 204 on the rotating shaft, so that the through hole 204 on the rotating shaft of the lock core 202 can be rotated 180 degrees.

[0034] like Figure 1 、 Figure 5 and Figure 6 The anti-lock detection module includes a travel switch K15 and a resistor R1. The travel switch K15 is of the JL006-010 pulley left bend model, and the resistor R1 is a chip resistor; the selected resistance is 1MΩ, the package is 0603, and the power is 0.1W. The travel switch K15 is installed inside the panel A104 and is close to the diamond column 1032 on the fixing part 103. One end of the travel switch K15 is grounded, and the other end is electrically connected to the I / O port PB2 of the single-chip computer U1. The travel switch K15 is connected to the I / O port PB2 of the single-chip computer U1. 5 is connected to the connection of the single chip computer U1 with one end of the resistor R1, and the other end of the resistor R1 is electrically connected to the external power supply 3.3V; when the user turns the safety knob 102, it will drive the fixing member 103 fixedly connected to the safety knob 102 to start rotating, and because the top of the fixing member 103 is a diamond column 1032 and the length from the end of the two symmetrical angles to the midpoint of the diamond column 1032 is longer than the length from the end of the other two symmetrical angles to the midpoint of the diamond column 1032, when it rotates, when the two ends of the longer diamond column 1032 are in a horizontal position, its ends will press against the limit switch K1 5, and the limit switch K1 5 is in a connected state, and then gives a contact signal to the single-chip computer U1. The single-chip computer U1 then controls the speaker SP17 through the voice chip U2 to send out a real-time voice that the smart door lock is in the anti-lock state. At the same time, the single-chip computer U1 sends a signal that the smart door lock is in the anti-lock state to the user's mobile terminal 11. The user can know whether the smart door lock is in the anti-lock state by hearing and through the mobile terminal 11.

[0035] The mobile terminal 11 may be a mobile phone, a notebook or a tablet computer.

[0036] On the contrary, when the two ends of the shorter diamond column 1032 are in a horizontal position, the anti-lock detection circuit will be in a disconnected state, and the microcontroller U1 will not receive a contact signal. The microcontroller U1 then controls the speaker SP1 7 through the voice chip U2 to send a real-time voice that the smart door lock is not in the anti-lock state. At the same time, the microcontroller U1 sends a signal to the user's mobile terminal 11 device that the smart door lock is not in the anti-lock state.

[0037] like Figure 1 and Figure 10 As shown, the key rotation detection circuit includes a normally closed reed switch H16, a cylindrical magnet M112 and a resistor R2. The normally closed reed switch H16 is of GPS-14B model, the resistor R2 is of 1MΩ, the package is 0603, and the power is 0.1W; the normally closed reed switch H16 is mounted on the panel B203 and is arranged horizontally with the lock core 202. One end of the normally closed reed switch H16 is grounded, and the other end is electrically connected to the I / O port PE7 of the microcontroller U1. The connection between the normally closed reed switch H16 and the microcontroller U1 is connected to one end of the resistor R2, and the other end of the resistor R2 is electrically connected to the external power supply 3.3V. The cylindrical magnet M112 is mounted on the through hole 204 of the rotating shaft of the lock core 202 and is connected to the normally closed reed switch H16. 6 is set horizontally; when the user inserts the key into the lock core 202 and rotates the shaft of the lock core 202, the cylindrical magnet M1 12 on the through hole 204 of the shaft of the lock core 202 rotates. When the cylindrical magnet M1 12 on the through hole 204 of the shaft of the lock core 202 and the normally closed reed switch H1 6 installed on the panel B203 are in a horizontal state and the closest distance, the normally closed reed switch H1 6 receives the strongest magnetic field from the cylindrical magnet M1 12. At this time, the microcontroller U1 receives the signal from the normally closed reed switch H1 6 emits an electrical signal when the magnetic field is the strongest. The single-chip computer U1 sends a start signal A according to the previous setting, and controls SP1 through the voice chip U2 to play the voice that the smart door lock is in the unlocked state. At the same time, the single-chip computer U1 sends a signal to the user's mobile terminal 11 that the smart door lock is in the unlocked state. The user can know whether the smart door lock is in the unlocked state by hearing and through the mobile terminal 11.

[0038] Since the reed switch H1 functions as a switch through the action of a magnetic field, the reed switch H1 and the magnet M1 should be installed as close as possible, but should not affect the normal rotation of the shaft of the lock core 202 .

[0039] On the contrary, when the cylindrical magnet M112 on the through hole 204 of the rotating shaft of the lock core 202 and the normally closed reed switch H16 installed on the panel B203 are not located on the same horizontal plane and gradually move away from each other, the magnetic field received by the normally closed reed switch H16 from the cylindrical magnet M112 gradually weakens. At this time, the single-chip microcomputer U1 receives the electrical signal with a lower magnetic field emitted by the normally closed reed switch H16. The single-chip microcomputer U1 sends a start signal B according to the previous setting, and controls the speaker SP17 through the voice chip U2 to play the voice that the smart door lock is in the unlocking state. At the same time, the single-chip microcomputer U1 sends a signal to the user's mobile terminal 11 device that the smart door lock is in the unlocking state. Even if the user is not at home, he can still know in time whether the smart door lock is in the unlocking state. When there are criminals in the outside world who perform unconventional unlocking on the smart door lock when it is not in the locked state, an alarm can be issued, and the safety factor is high.

[0040] like Figure 12 As shown, the detection system of the smart door lock also includes a zigbee module 8 and a Bluetooth module 9. The zigbee module 8 is electrically connected to the single-chip microcomputer U1. The zigbee module 8 is also wirelessly connected to the external mobile terminal 11 through the gateway 10. The Bluetooth module 9 is electrically connected to the single-chip microcomputer U1, and the Bluetooth module 9 is connected to the external mobile terminal 11 via Bluetooth.

[0041] When the mobile terminal 11 uses a mobile network signal or a WIFI signal, the mobile terminal 11 is wirelessly connected to the gateway 10 through the mobile network signal or the WIFI signal. When the mobile terminal 11 needs to know the specific situation of the smart door lock, the single chip U1 sends a signal of the specific situation of the smart door lock to the gateway 10 through the zigbee module 8, and then sends the signal to the user's mobile terminal 11 through the connection between the gateway 10 and the Internet, so that the user can know the specific situation of the smart door lock;

[0042] When the mobile terminal 11 is connected to the single-chip microcomputer U1 via Bluetooth, the mobile terminal 11 is directly connected to the Bluetooth module 9 of the single-chip microcomputer U1 via Bluetooth. When the mobile terminal 11 needs to know the specific situation of the smart door lock, the single-chip microcomputer U1 directly sends the signal of the specific situation of the smart door lock to the user's mobile terminal 11 through the Bluetooth module 9, and the user can know the specific situation of the smart door lock.

[0043] like Figure 1 、 Figure 4 and Figure 9As shown, the voice playback circuit includes a voice chip U2 and a speaker SP17. The model of the voice chip U2 is WTN6170-8S and the package is SOP8. The model of the speaker SP17 is 8Ω1W. The input end of the voice chip U2 is electrically connected to the I / O ports PB0 and PB1 of the single-chip microcomputer U1, and the output end of the voice chip U2 is electrically connected to at least one speaker SP17. The voice output of the speaker SP17 is controlled by the voice chip U2, wherein the speaker SP17 can be set in the smart door lock, on the door body, or externally connected to various corners of the room.

[0044] Compared with the prior art, the present invention can detect in real time whether the smart door lock is in the reverse locked state and the specific state of the lock cylinder 202. The user only needs to use the mobile terminal 11 to obtain the specific information of the smart door lock. The user does not need to directly observe the specific rotation position of the safety knob 102 to know whether the smart door lock is in the reverse locked state, which is convenient to use. At the same time, when criminals from the outside perform unconventional unlocking on the smart door lock when it is not in the reverse locked state, an alarm can be issued, and the safety factor is high.

[0045] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. In other words, equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A detection system for an intelligent door lock, characterized in that: It includes an intelligent door lock device and a detection device. The intelligent door lock device is internally provided with a detection device, and the detection device includes an anti-lock detection module, a key rotation detection module, a voice playback module, a single-chip microcomputer U1 and a power module. The output ends of the anti-lock detection module and the key rotation detection module are electrically connected to the single-chip microcomputer U1 respectively, and the single-chip microcomputer U1 is electrically connected to the input end of the voice playback module. The single-chip microcomputer U1 is electrically connected to the power module through a wire, and the single-chip microcomputer U1 is also grounded GND through a wire. The model of the single-chip microcomputer U1 is STM32L071VBT6 and the package is LQFP100; The key rotation detection module includes a normally closed reed switch H1 (6), a cylindrical magnet M1 (12) and a resistor R2. The normally closed reed switch H1 (6) is installed on the panel B (203) and is arranged horizontally with the lock core (202). One end of the normally closed reed switch H1 (6) is grounded, and the other end is electrically connected to the single-chip microcomputer U1. The connection between the normally closed reed switch H1 and the single-chip microcomputer U1 is connected to one end of the resistor R2, and the other end of the resistor R2 is electrically connected to the external power supply 3.3V. The cylindrical magnet M1 (12) is installed on the through hole (204) of the rotating shaft of the lock core (202) and is arranged horizontally with the normally closed reed switch H1 (6).

2. The intelligent door lock detection system according to claim 1, characterized in that: The intelligent door lock device comprises an inner locking mechanism and an outer locking mechanism, wherein the inner locking mechanism comprises a handle assembly A (101), a safety assembly and a panel A (104), wherein the panel A (104) is provided with a handle mounting hole A and a safety mounting hole, wherein the handle mounting hole A is located directly above the safety mounting hole, wherein the connection end of the handle assembly A (101) passes through the handle mounting hole A and is connected to the external lock body (3), wherein the connection end of the safety assembly passes through the safety mounting hole and is hinged to the paddle (4), wherein the safety assembly The component comprises a safety knob (102) and a fixing member (103), wherein the fixing member (103) is fixedly connected to the bottom of the safety knob (102) and the bottom of the panel A (104), and the fixing member (103) is composed of a rectangular bottom plate (1031) and a rhombus-shaped column (1032), wherein the length from the ends of two symmetrical angles of the rhombus-shaped column (1032) to the midpoint of the rhombus-shaped column (1032) is greater than the length from the ends of the other two symmetrical angles to the midpoint of the rhombus-shaped column (1032).

3. The intelligent door lock detection system according to claim 2, characterized in that: The external locking mechanism comprises a handle assembly B (201), a lock core (202) and a panel B (203); the panel B (203) is provided with a handle mounting hole B; the connecting end of the handle assembly B (201) passes through the handle mounting hole B and is connected to the external lock body (3); the lock core (202) is installed at the bottom of the panel B (203); and a through hole (204) is provided on the rotating shaft of the lock core (202).

4. The smart door lock detection system according to claim 1, characterized in that: The anti-lock detection module includes a travel switch K1 (5) and a resistor R1. The travel switch K1 (5) is installed inside the panel A (104) and is tightly attached to the diamond column (1032) on the fixing member. One end of the travel switch K1 (5) is grounded, and the other end is electrically connected to the single-chip microcomputer U1. One end of the resistor R1 is connected to the connection between the travel switch K1 (5) and the single-chip microcomputer U1, and the other end of the resistor R1 is electrically connected to the external power supply 3.3V.

5. The smart door lock detection system according to claim 1, characterized in that: The voice playing circuit includes a voice chip U2 and a speaker SP1 (7), wherein the input end of the voice chip U2 is electrically connected to the single chip microcomputer U1, and the output end of the voice chip U2 is electrically connected to at least one speaker SP1 (7).

6. The intelligent door lock detection system according to claim 1, characterized in that: The detection system of the intelligent door lock further comprises a Zigbee module (8) and a Bluetooth module (9); the Zigbee module (8) is electrically connected to the single-chip microcomputer U1, and the Zigbee module (8) is also wirelessly connected to an external mobile terminal (11) via a gateway (10); the Bluetooth module (9) is electrically connected to the single-chip microcomputer U1, and the Bluetooth module (9) is connected to the external mobile terminal (11) via Bluetooth.

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