Add-on assembly, identification method for add-on assembly, and wearable device

1 . An add-on assembly, comprising:

multiple different sub-assemblies, wherein each of the sub-assemblies comprises a magnetic adsorption part, the magnetic adsorption part of each of the sub-assemblies is used for adsorbed-connection with a device main body of a wearable device, the magnetic adsorption parts of any two of the sub-assemblies are different, and each of the sub-assemblies is identified by the device main body through the magnetic adsorption part,

wherein the multiple different sub-assemblies are configured to realize additional functions other than main functions of the device main body.

2 . The add-on assembly according to claim 1 , wherein the magnetic adsorption parts of any two sub-assemblies are different in at least one of the following ways:

each magnetic adsorption part is a permanent magnet, and polarities of the magnetic adsorption parts of any two sub-assemblies are different;

numbers of the magnetic adsorption parts of any two sub-assemblies are different;

positions of the magnetic adsorption parts of any two sub-assemblies are arranged differently; and

each of the magnetic adsorption parts comprises an adsorption surface, and areas of the adsorption surfaces of the magnetic adsorption parts of any two sub-assemblies are different.

3 . The add-on assembly according to claim 1 , wherein the magnetic adsorption part of each of the sub-assemblies is configured as a permanent magnet or a magnetic conductor; or

at least one of the sub-assemblies comprises multiple magnetic adsorption parts, the multiple magnetic adsorption parts comprising at least one permanent magnet and at least one magnetic conductor.

4 . The add-on assembly according to claim 1 , wherein at least one of the sub-assemblies is configured as an airbag assembly for measuring blood pressure.

5 . The add-on assembly according to claim 4 , wherein at least two of the sub-assemblies are configured as the airbag assemblies, and models of the respective airbag assemblies are different.

6 . The add-on assembly according to claim 4 , wherein the airbag assembly comprises an airbag, the airbag comprises a first cavity and a second cavity that are disposed in a laminated manner, and the first cavity and the second cavity are connected.

7 . The add-on assembly according to claim 6 , wherein the airbag further comprises a first sheet, a second sheet, a third sheet, and a fourth sheet, the first sheet and the second sheet are fixedly connected at their respective peripheral edge regions to form the first cavity, the third sheet and the fourth sheet are fixedly connected at their respective peripheral edge regions to form the second cavity, the second sheet is joined with the third sheet at a joint region comprising a through hole, and the first cavity is connected with the second cavity through the through hole.

8 . A wearable device, comprising:

a device main body comprising a magnetic field sensor, a processor, and a magnetic adsorption fitting part; and

an add-on assembly, comprising multiple different sub-assemblies, wherein each of the sub-assemblies comprises a magnetic adsorption part, the magnetic adsorption part of each of the sub-assemblies is used for adsorbed-connection with a device main body of a wearable device, the magnetic adsorption parts of any two of the sub-assemblies are different, and each of the sub-assemblies is identified by the device main body through the magnetic adsorption part,

wherein the magnetic adsorption fitting part is configured to be in the absorbed-connection with the magnetic adsorption part of one of the sub-assemblies, the magnetic field sensor is used for acquiring a magnetic field signal when the magnetic adsorption part and the magnetic adsorption fitting part are in an adsorbed state, and outputting the magnetic field signal to the processor, and the processor is configured to identify the one of the sub-assemblies according to the magnetic field signal,

wherein the multiple different sub-assemblies are configured to realize additional functions other than main functions of the device main body.

9 . The wearable device according to claim 8 , wherein the device main body comprises a plurality of magnetic adsorption fitting parts and a plurality of magnetic field sensors, the plurality of magnetic field sensors and the plurality of magnetic adsorption fitting parts are disposed in one-to-one correspondence with each other, the magnetic adsorption part of the sub-assembly is selectively adsorbed with at least one of the plurality of magnetic adsorption fitting parts correspondingly, and the plurality of magnetic field sensors acquire respectively the magnetic field signal when the corresponding magnetic adsorption fitting parts and the magnetic adsorption part are in the adsorbed state and output the magnetic field signal to the processor.

10 . The wearable device according to claim 8 , wherein the device main body comprises a plurality of magnetic adsorption fitting parts and one magnetic field sensor, the magnetic adsorption part of the sub-assembly is selectively adsorbed with at least one of the plurality of the magnetic adsorption fitting parts correspondingly, and the one magnetic field sensor is used for acquiring the magnetic field signal when the magnetic adsorption part and the at least one of the plurality of magnetic adsorption fitting part are in the adsorbed state and outputting the magnetic field signal to the processor.

11 . The wearable device according to claim 8 , wherein the wearable device further comprises a magnetic isolation assembly, the magnetic isolation assembly is movably disposed between the magnetic adsorption part and the magnetic adsorption fitting part, the magnetic isolation assembly is configured to work in a magnetic isolation state or a non-magnetic isolation state, the magnetic adsorption part and the magnetic adsorption fitting part attract each other in the non-magnetic isolation state, such that the sub-assembly is installed on the device main body, and the magnetic isolation assembly isolates the magnetic adsorption part and the magnetic adsorption fitting part in the magnetic isolation state, such that the sub-assembly is detachable from the device main body.

12 . The wearable device according to claim 11 , wherein the magnetic isolation assembly comprises a first part and a second part disposed separately, the first part is movably disposed in the sub-assembly, the second part is movably disposed in the device main body, and the first part is configured to drive the second part to move to make the magnetic isolation assembly work in the magnetic isolation state under an action of an external force.

13 . The wearable device according to claim 12 , wherein the first part moves in a first direction, the second part moves in a second direction different from the first direction, and the first part is configured to touch and press the second part, such that the second part moves to make the magnetic isolation assembly work in the magnetic isolation state in the second direction.

14 . The wearable device according to claim 13 , wherein the first part comprises a first driving inclined plane, and the first part touches and presses the second part through the first driving inclined plane, such that the second part moves to make the magnetic isolation assembly work in the magnetic isolation state in the second direction; and/or

the second part comprises a second driving inclined plane, and the first part touches and presses the second part through the second driving inclined plane, such that the second part moves to make the magnetic isolation assembly work in the magnetic isolation state in the second direction.

15 . The wearable device according to claim 14 , wherein the wearable device further comprises an elastic member, the elastic member is disposed in the second direction, an end of the elastic member acts on the second part and another end of the elastic member acts on the device main body, the elastic member is in a compressed state in the magnetic isolation state, and the elastic member is in an extended state in the non-magnetic isolation state.

16 . The wearable device according to claim 15 , wherein the second part comprises a guide post extending in the second direction, and the elastic member is sleeved on the guide post.

17 . The wearable device according to claim 12 , wherein the add-on assembly comprises multiple magnetic adsorption parts and multiple magnetic adsorption fitting parts arranged in one-to-one correspondence, and multiple second parts, the first part is configured to drive the multiple second parts to move to make the magnetic isolation assembly work in the magnetic isolation state under an action of an external force, such that the multiple corresponding magnetic adsorption parts and the multiple magnetic adsorption fitting parts are isolated.

18 . The wearable device according to claim 8 , wherein the add-on assembly comprises an airbag, the wearable device comprises an air pump, the air pump is disposed inside the device main body, the air pump comprises an air inlet, a first air outlet and a second air outlet, the first air outlet is connected with the airbag, the airbag is configured to work in an inflated state or a deflated state, the air inlet is connected with the airbag through the first air outlet in the inflated state, and the airbag is connected with the second air outlet through the first air outlet in the deflated state.