WO2016155444A1

WO2016155444A1 - Low-power consumption bluetooth connecting method and apparatus

Info

Publication number: WO2016155444A1
Application number: PCT/CN2016/074825
Authority: WO
Inventors: 郑战海
Original assignee: 石姗姗
Priority date: 2015-04-01
Filing date: 2016-02-29
Publication date: 2016-10-06
Also published as: CN104811895A; CN104811895B

Abstract

Disclosed is a low-power consumption Bluetooth connecting method, comprising: switching between a master device and a slave device. The switching between the master device and the slave device comprises: a. acquiring a master time slice having a random length to serve as the master device to scan the slave device using a low-power consumption Bluetooth protocol; determining that no connection with the master device is established in the master time slice having the random length; acquiring a slave time slice having a random length to serve as the slave device to send a Bluetooth broadcast signal using the low-power consumption Bluetooth protocol; and determining that no connection with the slave device is established in the slave time slice having the random length, and returning to step a. A device alternately serves as a master device and a slave device by means of automatic random time slices, thereby avoiding the case where a plurality of devices simultaneously serving as master devices or slave devices cannot be scanned, the lengths of the time slices are randomly generated, a connection is established when the devices circulate in order to be in different master/slave modes, the connection is more convenient, the operation complexity of a user is simplified, and the user experience is improved.

Description

Low-power bluetooth connection method and device

This patent application is filed on April 1, 2015, and the application number is 201510152785.9. The applicant is Guangdong Xiaotiancai Technology Co., Ltd., and the Chinese patent application titled "A Low-Power Bluetooth Connection Method and Device" is preferred. The entire contents of this application are incorporated herein by reference.

Technical field

The present invention relates to a low power Bluetooth technology for wireless communication, and more particularly to a low power Bluetooth connection method and apparatus.

Background technique

Low-power Bluetooth is mainly used to achieve continuous connection between mobile intelligent terminals or between mobile intelligent terminals and peripheral accessories. It is a short-distance wireless communication technology with extremely low power consumption, and the effective transmission distance is increased to 100 meters. the above. However, in the Bluetooth connection process, the master-slave relationship needs to be established, the Bluetooth broadcast signal is turned on from the device, and the master device scans the Bluetooth broadcast signal to initiate the connection. Therefore, the master-slave relationship between the devices must be established before the Bluetooth application, and the connection communication can be performed. If both parties that need to establish a Bluetooth connection become master or slave, then both parties cannot search for each other and cannot make the next connection request. If the main body of the two parties that need to establish a Bluetooth connection is the same, for example, the main body of the two parties is two watches, then before establishing the Bluetooth connection, the user must also select the master-slave relationship of the Bluetooth connection, which makes the interaction process one more confirmation step. And because the implementation process of this confirmation step requires user operations, it will add technical obstacles to those who do not understand the technology.

Summary of the invention

The embodiment of the invention provides a low-power Bluetooth connection method and device, which does not need to manually select a master-slave relationship of the device, and the connection is more convenient, which simplifies the user operation complexity and improves the user experience.

The embodiment of the invention adopts the following technical solutions:

In a first aspect, the technical solution provides a low power Bluetooth connection method, including a master device and a slave device. Conversion of equipment;

The conversion of master and slave includes:

a. Obtain a random time master time slice, use the low power Bluetooth protocol to scan the slave device as the master device; determine that no connection is established with the slave device in the random time master time slice; obtain a random length slave time slice as the slave device Sending a Bluetooth broadcast signal using the low-power Bluetooth protocol; determining that no connection is established with the master device in the random slice from the time slice, returning to step a; or

c. Obtain a random length slave time slice, send a Bluetooth broadcast signal as a slave device using a low power Bluetooth protocol; determine that a random length of the slave time slice does not establish a connection with the master device; obtain a random length master time slice as the master The device scans the slave device using the Bluetooth low energy protocol; determines that there is no connection with the slave device in the random time master time slice, and returns to step c.

After the master time slice is obtained by using the low power Bluetooth protocol to scan the slave device, the master time slice may also include:

Determining, as the master device establishes a connection with the slave device and interrupting, acquiring a slave slice of random length, and transmitting a Bluetooth broadcast signal as a slave device using a low-power Bluetooth protocol; or

After determining that the master device establishes a connection with the slave device and interrupts, the master time slice of random length is obtained, and the master device scans the slave device using the low power Bluetooth protocol.

And obtaining the slave time slice of the random length, and after the slave device sends the Bluetooth broadcast signal by using the low-power Bluetooth protocol, the method may further include:

Determining that after the slave device establishes a connection with the master device and interrupts, the master time slice of random length is obtained, and the master device scans the slave device using the low power Bluetooth protocol; or

After determining that the slave device establishes a connection with the master device and interrupts, it acquires a random length slave time slice, and the slave device transmits a Bluetooth broadcast signal using the low power Bluetooth protocol.

If at least two slave devices are detected, the Bluetooth signal strengths of the slave devices are sorted, and the Bluetooth signal strengths are sequentially connected from strong to weak.

The random time main time slice and the random length slave time slice are random time slices obtained by the formula T2=((Rand()%N)+1)*T1, wherein T1 is a low power Bluetooth device switching. of The minimum time unit, N is an integer greater than one and less than 20.

In a second aspect, the technical solution provides a low power Bluetooth connection device, including:

a master time slice acquiring unit, configured to acquire a master time slice of a random length, and use the low power Bluetooth protocol to scan the slave device as a master device;

a first connection determining unit, configured to determine that no connection is established with the slave device in the master time slice of random length;

a first triggering unit, configured to trigger a slave time slice acquiring unit when no connection is established with the slave device in the master time slice of random length;

The time slice acquisition unit is configured to acquire a random length slave time slice, and send a Bluetooth broadcast signal as a slave device using a low power Bluetooth protocol;

a second connection confirming unit, configured to determine that no connection is established with the master device in the slave time slice of the random length;

The second triggering unit is configured to trigger the main time slice acquiring unit when no connection is established with the master device in the random length slave time slice.

The Bluetooth low energy connection device may further include:

a first connection interruption unit, configured to determine, after the master device establishes a connection with the slave device, interrupts, obtain a random length slave time slice, and send a Bluetooth broadcast signal as a slave device using a low power Bluetooth protocol; or, for determining After the master device establishes a connection with the slave device and interrupts, the master time slice of random length is obtained, and the master device scans the slave device using the low power Bluetooth protocol.

The Bluetooth low energy connection device may further include:

a second connection interruption unit, configured to determine, after the slave device establishes a connection with the master device, interrupts, obtain a random time master time slice, and use the low power Bluetooth protocol to scan the slave device as the master device; or, After the device establishes a connection with the master device and interrupts, it acquires a random-length slave time slice, and sends a Bluetooth broadcast signal as a slave device using the low-power Bluetooth protocol.

The Bluetooth low energy connection device may further include:

The signal strength connection unit is configured to: if at least two slave devices are detected, the Bluetooth signal strengths of the slave devices are sorted, and the Bluetooth signal strengths are sequentially connected from strong to weak.

The Bluetooth low energy connection device may further include: a random time acquisition unit, configured to acquire the random time main time slice and the random length from the formula T2=((Rand()%N)+1)*T1 A time slice, where T1 is the minimum time unit of Bluetooth device switching of low power consumption, and N is an integer greater than 1 and less than 20.

The beneficial effects brought by the technical solutions provided by the embodiments of the present invention are as follows:

In the technical solution, the device turns into a master device and a slave device by means of an automatic random time slice, so that multiple devices are simultaneously the master device or the slave device cannot be found to establish a connection at the same time, and the time slice length is randomly generated. Looping to a different master-slave mode establishes a connection, which makes the connection more convenient, simplifies the complexity of user operations, and improves the user experience.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings may be obtained according to the contents of the embodiments of the present invention and the drawings without any creative work.

FIG. 1 is a flowchart of a method of an embodiment of a low power Bluetooth connection method according to an embodiment of the present invention.

FIG. 2 is a flowchart of a method for another embodiment of a low power Bluetooth connection method according to an embodiment of the present invention.

FIG. 3 is a flowchart of a method for another embodiment of a low power Bluetooth connection method according to an embodiment of the present invention.

FIG. 4 is a flowchart of a method for another embodiment of a low power Bluetooth connection method according to an embodiment of the present invention.

FIG. 5 is a flowchart of a method for another embodiment of a low power Bluetooth connection method according to an embodiment of the present invention.

FIG. 6 is a flowchart of a method for another embodiment of a low power Bluetooth connection method according to an embodiment of the present invention.

FIG. 7 is a structural diagram of an embodiment of a Bluetooth low energy connection device according to an embodiment of the present invention.

detailed description

The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

The technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only the present invention. Some embodiments, but not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Please refer to FIG. 1 , which is a flowchart of a method for connecting a low power Bluetooth connection method according to an embodiment of the present invention. The Bluetooth low energy connection method includes:

S100: Obtain a master time slice of random length, and scan the slave device as a master device using a low power Bluetooth protocol.

The master time slice of random length is obtained by the formula T2=((Rand()%N)+1)*T1, where T1 is the minimum time unit of the Bluetooth low energy device switching, and N is an integer greater than 1 and less than 20. In the present embodiment, N is preferably 10.

The master time slice of random length is relatively short, but the time length of the master time slice is at least the time required to allow the slave device to receive connection request information from other master devices. The time that the master device can search for other slave devices is usually extended for a certain period of time based on the time required for the slave device to be able to receive the connection request information by other master devices, ensuring that the two parties continue to be random several times, in one The master device establishes a connection for the slave device.

S101. Determine that no connection is established with the slave device in the master time slice of random length.

The Bluetooth signal of the slave device is not scanned in the master time slice of random length, or the scanned Bluetooth signal is lower than the set value, and no connection is made.

S102. Acquire a random length slave time slice, and send a Bluetooth broadcast signal as a slave device using a low power Bluetooth protocol.

The random length of the time slice is the same as the random length master time slice acquisition method, and will not be described again. By The master time slice of the random length from the time slice and the random length is random within a certain range, so the length of the time slice is not a fixed value. In step S102, the device transitions from the master state to the slave state.

S103. Determine that no connection is established with the master device in the slave time slice of the random length, and return to step S100.

When the device is in the slave device state and no master device establishes a connection with it, the device is scanned again as the master device, so that the master device state and the slave device state are cyclically switched until the plurality of devices are different as the master device and not at the same time. The device is able to establish a connection. Connections are usually established automatically after 1-3 cycles.

In summary, in this embodiment, after the Bluetooth function is turned on, the device is in the state of the master device, and the device is rotated as the master device and the slave device by means of automatic random time slice, thereby preventing multiple devices from being simultaneously the master device or the slave device at the same time. When the other party scans, the length of the time slice is randomly generated. When the device loops to a different master-slave mode, the connection is established, the connection is more convenient, the complexity of the user operation is simplified, and the user experience is improved.

Please refer to FIG. 2 , which is a flowchart of a method for another embodiment of a low power Bluetooth connection method according to an embodiment of the present invention. The low-power Bluetooth connection method is different from the method shown in FIG. 1 in that the connection method of the low-power Bluetooth is initially in the slave state, and the low-power Bluetooth connection method includes:

S200: Obtain a random length slave time slice, and send a Bluetooth broadcast signal as a slave device using a low power Bluetooth protocol.

S201. Determine that no connection is established with the master device in the slave time slice of the random length.

S202. Acquire a master time slice of random length, and scan the slave device as a master device using a low power Bluetooth protocol.

S203. Determine that no connection is established with the slave device in the master time slice of random length, and return to step S200.

If the device is in the master state without scanning to the slave device, or if the scanned Bluetooth signal is lower than the set value and is not connected, it is scanned again as a slave device, thus cycling between the master device state and the slave device state until Multiple devices are not the primary device at the same time, and the slave device can establish a connection at the same time. until. Connections are usually established automatically after 1-3 cycles.

The method for obtaining the master time slice of the random length from the time slice and the random length refers to the method related to the method shown in FIG. 1 , and details are not described herein again.

In summary, after the Bluetooth function is turned on in this embodiment, the device is in the slave device state, and the device turns to be the master device and the slave device in an automatic random time slice manner, so that multiple devices are simultaneously the master device or the slave device at the same time cannot be When the other party scans, the length of the time slice is randomly generated. When the device loops to a different master-slave mode, the connection is established, the connection is more convenient, the complexity of the user operation is simplified, and the user experience is improved.

Please refer to FIG. 3 , which is a flowchart of a method for another embodiment of a low power Bluetooth connection method according to an embodiment of the present invention. The difference from the method shown in FIG. 1 in this embodiment is that the present embodiment performs processing after discovering that the target device that is not required to be connected is connected.

The Bluetooth low energy connection method includes:

S300: Obtain a random time master time slice, and use the low power Bluetooth protocol to scan the slave device as a master device.

S301. After determining that the master device establishes a connection with the slave device and interrupts, acquiring a slave time slice of random length, and transmitting, as the slave device, a Bluetooth broadcast signal by using a low power Bluetooth protocol.

When the device is in the master state, it scans the slave device and establishes a connection with it. At this time, the random time slice stops. After the connection, the identity device confirms that the target device is not required to be connected, and the device enters the slave device state.

When the identity is confirmed after the connection is established, the user can click to confirm through the touch screen, or use the preset action to perform the somatosensory confirmation.

S302. Determine that no connection is established with the master device in the slave time slice of the random length, and return to step S300.

In summary, after the Bluetooth function is turned on in this embodiment, the device is in the state of the master device, and the device is rotated as the master device and the slave device by means of automatic random time slice until the multiple devices are in different states to establish a connection, and the connection is determined. If the device is not the target device, the loop of the random time slice is continued, the connection is more convenient, the complexity of the user operation is simplified, the user experience is improved, and the connection accuracy is ensured.

In this embodiment, when the device is in the state of the master device, if at least two slave devices are detected, the Bluetooth signal strengths of the slave devices are sorted, and the Bluetooth signal strength is sequentially connected from strong to weak. When the connected slave device is not the target device, the connection is disconnected, the Bluetooth signal of the slave device is discarded, and the connection is performed in order from strong to weak according to the Bluetooth signal strength. Make sure that face-to-face users can connect successfully when they exchange information.

Please refer to FIG. 4 , which is a flowchart of a method for another embodiment of a low power Bluetooth connection method according to an embodiment of the present invention. The difference from the method shown in FIG. 3 in this embodiment is that the present embodiment enters the state of the master device after discovering that the target device that is not required to be connected is connected.

The Bluetooth low energy connection method includes:

S400: Obtain a master time slice of random length, and scan the slave device as a master device using a low power Bluetooth protocol.

S401. After determining that the master device establishes a connection with the slave device and interrupts, acquiring a master time slice of a random length, and using the low power Bluetooth protocol to scan the slave device as the master device.

When the device is in the master state, it scans the slave device and establishes a connection with it. At this time, the random time slice stops. After the connection, the identity device confirms that the target device is not required to be connected, and the device enters the master device state.

When the identity is confirmed after the connection is established, the user can click to confirm through the touch screen, or use the preset action to confirm the body feeling.

S402. Determine that no connection is established with the slave device in the master time slice of random length.

S403. Acquire a random length slave time slice, and send a Bluetooth broadcast signal as a slave device using a low power Bluetooth protocol.

S404. Determine that no connection is established with the master device in the slave time slice of the random length, and return to step S400.

In summary, after the Bluetooth function is turned on in this embodiment, the device is in the state of the master device, and the device is rotated as the master device and the slave device by means of automatic random time slice until the multiple devices are in different states to establish a connection, and the connection is determined. If the device is not the target device, continue the loop of the random time slice and connect It is more convenient, simplifies the complexity of user operations, improves the user experience, and ensures the accuracy of the connection.

Please refer to FIG. 5, which is a flowchart of a method for another embodiment of a low power Bluetooth connection method according to an embodiment of the present invention. The difference between this embodiment and the method shown in FIG. 2 is that the present embodiment performs processing after discovering that the target device that is not required to be connected is connected.

S500: Obtain a random length slave time slice, and send a Bluetooth broadcast signal as a slave device using a low power Bluetooth protocol.

S501. After determining that the slave device establishes a connection with the master device and interrupts, acquiring a master time slice of a random length, and using the low power Bluetooth protocol to scan the slave device as the master device.

When the device is in the slave device state, the device establishes a connection with the master device. At this time, the random time slice stops. After the connection, the identity device confirms that the target device is not required to be connected, and the device enters the master device state.

S502. Determine that no connection is established with the slave device in the master time slice of random length, and return to step S500.

In summary, in this embodiment, after the Bluetooth function is turned on, the device is in the slave device state, and the device turns to be the master device and the slave device in an automatic random time slice manner until the multiple devices are in different states to establish a connection, and the connection is determined. If the device is not the target device, the loop of the random time slice is continued, the connection is more convenient, the complexity of the user operation is simplified, the user experience is improved, and the connection accuracy is ensured.

Please refer to FIG. 6 , which is a flowchart of a method for another embodiment of a low power Bluetooth connection method according to an embodiment of the present invention. The difference from the method shown in FIG. 5 in this embodiment is that the present embodiment enters the slave device state after discovering that the target device that is not required to be connected is connected.

S600: Obtain a random length slave time slice, and send a Bluetooth broadcast signal as a slave device using a low power Bluetooth protocol.

S601. Determine to obtain a random length slave time slice after establishing a connection between the slave device and the master device, and send the Bluetooth broadcast signal as the slave device using the low power Bluetooth protocol.

When the device is in the slave state, it establishes a connection with the master device. At this time, the random time slice stops, even After receiving the identity information, it is confirmed that the target device is not required to be connected, and the device enters the slave device state.

S602. Determine that no connection is established with the master device in the slave time slice of the random length.

S603. Acquire a master time slice of random length, and scan the slave device as a master device using a low power Bluetooth protocol.

S604. Determine that no connection is established with the slave device in the master time slice of random length, and return to step S600.

Please refer to FIG. 7 , which is a structural diagram of a low power Bluetooth connection device corresponding to the low power Bluetooth connection method of FIG. 1 according to an embodiment of the present invention. The Bluetooth low energy connection device includes:

The master time slice obtaining unit 10 is configured to acquire a master time slice of a random length, and scan the slave device as a master device using a low power Bluetooth protocol;

a first connection determining unit 20, configured to determine that no connection is established with the slave device in the master time slice of random length;

The first triggering unit 30 is configured to trigger the slave time slice acquiring unit when no connection is established with the slave device in the master time slice of the random length;

The time slice acquisition unit 40 is configured to acquire a random length slave time slice, and send a Bluetooth broadcast signal as a slave device using a low power Bluetooth protocol;

a second connection confirming unit 50, configured to determine that no connection is established with the master device in the slave time slice of the random length;

The second triggering unit 60 is configured to trigger the main time slice acquiring unit when no connection is established with the master device in the random length slave time slice.

For details of the above-mentioned low-power Bluetooth connection device, please refer to the method described in FIG. 1 and FIG. 2, here No longer.

In summary, in the embodiment, after the Bluetooth function is turned on, the device turns to be the master device and the slave device by means of the automatic random time slice, so that multiple devices are simultaneously the master device or the slave device cannot be scanned by the other device at the same time. The length is randomly generated. When the device loops to a different master-slave mode, the connection is established, the connection is more convenient, the complexity of the user operation is simplified, and the user experience is improved.

In some other embodiments, the foregoing Bluetooth low energy connection device may further include:

Specifically, when the method shown in FIG. 3 is used, the first connection interruption unit is configured to determine that the master device is connected to the slave device and then disconnects, and then acquires a random length slave time slice, and uses the low power Bluetooth protocol as the slave device. Send a Bluetooth broadcast signal.

When the method shown in FIG. 4 is used, the first connection interruption unit is configured to determine, after the master device establishes a connection with the slave device, and interrupts, acquiring a random time master time slice, and using the low power Bluetooth protocol to scan the slave device as the master device. . Improves the accuracy of the connection by verifying that the connected device is the target device.

Specifically, when the method shown in FIG. 5 is used, the second connection interruption unit is configured to determine, after the slave device establishes a connection with the master device, and interrupts, acquiring a random time master time slice, and using the low power Bluetooth protocol as the master device. Scan the slave device.

When the method shown in FIG. 6 is used, the second connection interruption unit is configured to determine that the slave device is connected to the master device and then disconnects, and then acquires a random length slave time slice, and the slave device transmits the Bluetooth broadcast using the low power Bluetooth protocol. signal. Increased connectivity by verifying that the connected device is the target device accuracy.

In some embodiments, the foregoing Bluetooth low energy connection device further includes:

The signal strength connection unit is configured to: if at least two slave devices are detected, the Bluetooth signal strengths of the slave devices are sorted, and the Bluetooth signal strengths are sequentially connected from strong to weak. By connecting to the slave device in order from the strongest to the weakest according to the strength of the Bluetooth signal, it is ensured that the connection is performed once in face-to-face information interaction, and the connection efficiency is improved.

a random time acquisition unit, configured to acquire the random time main time slice and the random length slave time slice by the formula T2=((Rand()%N)+1)*T1, where T1 is a low power Bluetooth device The minimum time unit of switching, N being an integer greater than 1 and less than 20. The random time master time slice and the random length slave time slice are random time slices.

The above content is only a preferred embodiment of the present invention, and those skilled in the art will have a change in the specific embodiment and application scope according to the idea of the present invention. The content of the present specification should not be construed as the present invention. limits.

Claims

A low-power Bluetooth connection method, comprising: converting a master device and a slave device;

The conversion of master and slave includes:

a. Obtain a random time master time slice, use the low power Bluetooth protocol to scan the slave device as the master device; determine that no connection is established with the slave device in the random time master time slice; obtain a random length slave time slice as the slave device Sending a Bluetooth broadcast signal using the low-power Bluetooth protocol; determining that no connection is established with the master device in the random slice from the time slice, returning to step a; or

c. Obtain a random length slave time slice, send a Bluetooth broadcast signal as a slave device using a low power Bluetooth protocol; determine that a random length of the slave time slice does not establish a connection with the master device; obtain a random length master time slice as the master The device scans the slave device using the Bluetooth low energy protocol; determines that there is no connection with the slave device in the random time master time slice, and returns to step c.
The method according to claim 1, wherein the obtaining a master time slice of a random length, after the master device scans the slave device using the Bluetooth low energy protocol, further comprises:

Determining, as the master device establishes a connection with the slave device and interrupting, acquiring a slave slice of random length, and transmitting a Bluetooth broadcast signal as a slave device using a low-power Bluetooth protocol; or

After determining that the master device establishes a connection with the slave device and interrupts, the master time slice of random length is obtained, and the master device scans the slave device using the low power Bluetooth protocol.
The method according to claim 1, wherein the obtaining a random length slave time slice, after the slave device sends the Bluetooth broadcast signal using the low power Bluetooth protocol, further comprises:

Determining that after the slave device establishes a connection with the master device and interrupts, the master time slice of random length is obtained, and the master device scans the slave device using the low power Bluetooth protocol; or

After determining that the slave device establishes a connection with the master device and interrupts, it acquires a random length slave time slice, and the slave device transmits a Bluetooth broadcast signal using the low power Bluetooth protocol.
The method according to claim 1, wherein the obtaining a master time slice of a random length, after the master device scans the slave device using the Bluetooth low energy protocol, further comprises:

If at least two slave devices are detected, the Bluetooth signal strengths of the slave devices are sorted, and the Bluetooth signal strengths are sequentially connected from strong to weak.
The method according to any one of claims 1 to 4, wherein the random time master time slice and the random length slave time slice are both represented by the formula T2=((Rand()%N)+1) *T1 acquired A random time slice, where T1 is the minimum time unit of Bluetooth low energy device switching, and N is an integer greater than 1 and less than 20.
A method according to any one of claims 1 to 5, characterized in that

Returning to step a, comprising: returning to execute a master time slice that acquires a random length, and scanning the slave device as a master device using a low power Bluetooth protocol;

Returning to step c, the method includes: returning to execute a slave time slice that acquires a random length, and transmitting a Bluetooth broadcast signal as a slave device using a low power Bluetooth protocol.
A low power Bluetooth connection device, comprising:

a master time slice acquiring unit, configured to acquire a master time slice of a random length, and use the low power Bluetooth protocol to scan the slave device as a master device;

a first connection determining unit, configured to determine that no connection is established with the slave device in the master time slice of random length;

a first triggering unit, configured to trigger a slave time slice acquiring unit when no connection is established with the slave device in the master time slice of random length;

The time slice acquisition unit is configured to acquire a random length slave time slice, and send a Bluetooth broadcast signal as a slave device using a low power Bluetooth protocol;

a second connection confirming unit, configured to determine that no connection is established with the master device in the slave time slice of the random length;

The second triggering unit is configured to trigger the main time slice acquiring unit when no connection is established with the master device in the random length slave time slice.
The Bluetooth low-power connection device of claim 7, further comprising:

a first connection interruption unit, configured to determine, after the master device establishes a connection with the slave device, interrupts, obtain a random length slave time slice, and send a Bluetooth broadcast signal as a slave device using a low power Bluetooth protocol; or, for determining After the master device establishes a connection with the slave device and interrupts, the master time slice of random length is obtained, and the master device scans the slave device using the low power Bluetooth protocol.
The Bluetooth low-power connection device of claim 7, further comprising:

a second connection interruption unit, configured to determine, after the slave device establishes a connection with the master device, interrupts, obtain a random time master time slice, and use the low power Bluetooth protocol to scan the slave device as the master device; or It is used to determine that the slave device is connected to the master device and then disconnects, and then obtains a random length slave time slice, and the slave device uses the low power Bluetooth protocol to send a Bluetooth broadcast signal.
The Bluetooth low-power connection device of claim 7, further comprising:

The signal strength connection unit is configured to: if at least two slave devices are detected, the Bluetooth signal strengths of the slave devices are sorted, and the Bluetooth signal strengths are sequentially connected from strong to weak.
The low power consumption Bluetooth connection device according to any one of claims 7 to 10, characterized in that the random time acquisition unit is configured to acquire the equation by the formula T2=((Rand()%N)+1)*T1 The master time slice of random length and the slave time slice of random length, where T1 is the minimum time unit of the Bluetooth device switching, and N is an integer greater than 1 and less than 20.