WO2018045488A1 - 具有可分离本体的智能设备 - Google Patents

具有可分离本体的智能设备 Download PDF

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Publication number
WO2018045488A1
WO2018045488A1 PCT/CN2016/098205 CN2016098205W WO2018045488A1 WO 2018045488 A1 WO2018045488 A1 WO 2018045488A1 CN 2016098205 W CN2016098205 W CN 2016098205W WO 2018045488 A1 WO2018045488 A1 WO 2018045488A1
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WO
WIPO (PCT)
Prior art keywords
magnet
attracting
hall sensor
attracting magnet
earphone
Prior art date
Application number
PCT/CN2016/098205
Other languages
English (en)
French (fr)
Inventor
李泰安
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201680035440.8A priority Critical patent/CN108141655B/zh
Priority to US16/331,061 priority patent/US10823584B2/en
Priority to EP16915424.2A priority patent/EP3499909B1/en
Priority to BR112019004494-9A priority patent/BR112019004494B1/pt
Priority to PCT/CN2016/098205 priority patent/WO2018045488A1/zh
Publication of WO2018045488A1 publication Critical patent/WO2018045488A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1058—Manufacture or assembly
    • H04R1/1066—Constructional aspects of the interconnection between earpiece and earpiece support
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1041—Mechanical or electronic switches, or control elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/105—Earpiece supports, e.g. ear hooks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/03—Aspects of the reduction of energy consumption in hearing devices

Definitions

  • the present invention relates to a smart device, and more particularly to a smart device having a detachable body.
  • a smart device with a detachable body needs to detect the connection state of different bodies in the device in many application scenarios. For example, a wristband with a detachable Bluetooth headset in the wearable device, when the phone is answered, the user will remove the Bluetooth headset from the wristband of the wristband and hang it on the user's ear to answer the call. At this time, the wristband needs to detect the Bluetooth.
  • the smart earphone and the wristband are separated, if separated, perform a call through the earphone; for example, a smart earphone, the smart earphone includes two earphone bodies, and the earphone body is a device including a circuit board, a headphone component and a casing on the circuit board, due to the smart earphone The size of the device is limited, and the battery life is weak.
  • the left and right earphone bodies are separated; when not in use, the left and right earphone bodies can be fitted, convenient to carry, and can enter the power saving mode. It can be judged whether the smart earphone is in use by detecting whether the two earphone bodies are separated. If not in use, the smart headset can be triggered to enter a low power mode.
  • the smart device provided by the embodiment of the invention can improve the accuracy of detecting the state of the detachable body of the smart device.
  • Embodiments of the present invention provide a smart device having a detachable body, the smart device including a first body and a second body.
  • the first body is provided with a Hall sensor and a first attracting magnet group;
  • the second body is provided with an induction magnet and a second attracting magnet group.
  • the first body and the second body are attracted by the first combination magnet group and the second absorption magnet group.
  • the first The attracting magnet group includes a third attracting magnet and a fourth attracting magnet adjacent to the third attracting magnet.
  • the third attracting magnet is opposite to the magnetic pole of the fourth attracting magnet, the north pole axis of the third attracting magnet is substantially parallel to the north and south axis of the fourth attracting magnet, and the third The magnetic poles of one end of the attracting magnet and the fourth attracting magnet face the body of the suction body of the first body, respectively.
  • the second attracting magnet group includes a fifth attracting magnet and a sixth attracting magnet.
  • the fifth attracting magnet and the sixth attracting magnet are respectively attracted to the third attracting magnet and the fourth attracting magnet.
  • the fifth attracting magnet is opposite to the magnetic pole of the sixth attracting magnet, and the north pole axis of the fifth attracting magnet is substantially parallel to the north and south axis of the sixth attracting magnet, and the fifth attracting magnet and the sixth attracting magnet
  • One end magnetic pole faces the suction surface of the second body, respectively.
  • the Hall sensor In the state in which the first body and the second body are coupled, the Hall sensor is disposed within a magnetic field generated by the induction magnet, and the Hall sensor senses a magnetic field of the induction magnet and emits an indication signal.
  • each of the attracting magnet groups is formed by combining two magnets of opposite polarities side by side. Such a combination of attracting magnets attenuates the strength of the magnetic field in the direction of the non-magnetic poles, thereby reducing interference with the magnetic field detected by the Hall sensor.
  • the third attracting magnet and the fourth attracting magnet are disposed in the first body.
  • the two magnets are closely attached to each other, which can effectively attract the magnetic induction line in the direction of the magnetic pole of the other side, thereby reducing the influence on the components around the magnet group.
  • the fifth attracting magnet and the sixth attracting magnet are disposed in the second body.
  • the outer casing of the first body and the outer casing of the second body are each provided with a flat plane as the suction surface.
  • a magnetic line receiving surface of the Hall sensor is substantially parallel to a suction surface of the first body, and a north-south axis direction of the sensing magnet and a suction surface of the second body Roughly vertical.
  • the magnetic sensing line receiving surface of the Hall sensor and the first body The suction surface is substantially perpendicular, and the north-south axis direction of the induction magnet is substantially parallel to the suction surface of the second body.
  • the size of the third attracting magnet is substantially the same as the size of the fourth attracting magnet; the size of the fifth attracting magnet is substantially the same as the size of the sixth attracting magnet.
  • the magnets constituting the absorbing magnet group have substantially the same size, which can effectively reduce the magnetic field strength that affects the induction magnet and the Hall sensor.
  • the first body and the second body are respectively earphone bodies of smart headphones.
  • the smart device starts the power saving mode according to a signal sent by the Hall sensor.
  • the combined third and fourth attracting magnets and the combined fifth and sixth attracting magnets are sucked together. Since the third attracting magnet and the fourth attracting magnet are arranged side by side in opposite polarity, the fifth attracting magnet and the sixth attracting magnet are also arranged in opposite polarity side by side, so that after sucking together, the magnetic field is mainly due to the third The attracting magnet and the fourth attracting magnet are formed between the fifth attracting magnet and the sixth attracting magnet. The influence on the magnetic field of the magnets placed nearby is small. It is advantageous for the Hall sensor to detect the magnetic field of the magnet and issue an indication signal.
  • a smart device having a detachable body, the smart device including a first body and a second body.
  • the first body is provided with a Hall sensor and a first magnet.
  • the second body is provided with a magnet and a second magnet.
  • the first body and the second body are detachably disposed and are attracted by the first magnet and the second magnet.
  • the north and south pole axes of the first magnet and the second magnet are parallel to the suction surface, and the first magnet and the second magnet are placed opposite to each other such that the first magnet and the second magnet are attracted to each other in the sucked state.
  • the direction of the magnetic induction line of the attracting magnet is parallel to the receiving surface of the Hall sensor, and the two attracting magnets can effectively reduce the Hall sensor and the magnet. influences.
  • substantially parallel as used in the embodiments of the present invention can be interpreted as parallel, nearly parallel, Or there is a preset angle; “roughly vertical” can be interpreted as vertical, near vertical, or there is a preset angle.
  • FIG. 1 is a schematic overall view of a smart earphone disclosed in an embodiment of the present invention.
  • Figure 2 is a schematic diagram of the pickup state of the two earphone bodies of the smart earphone.
  • FIG. 3 is a schematic structural view of a Hall sensor in the prior art.
  • FIG. 4 is a schematic diagram of a Hall sensor detecting a magnetic line of inductance passing vertically through its receiving surface.
  • Fig. 5 is a schematic view showing the magnetic sensing line passing through the Hall sensor in parallel in the prior art.
  • FIG. 6 is a schematic view showing the arrangement of magnets and Hall sensors in the smart earphone in the prior art.
  • Fig. 7 is a schematic view showing the influence of the magnetic field of the attracting magnet on the Hall sensor in the prior art.
  • FIG. 8 is a schematic diagram of the influence of the attracting magnet of the smart earphone on the magnetic field of the induction magnet in the prior art.
  • FIG. 9 is a schematic exploded view showing the structure of a headphone body of the smart earphone according to the embodiment of the present invention.
  • FIG. 10 is a schematic exploded view showing another earphone body of the smart earphone according to the embodiment of the present invention.
  • FIG. 11 is a schematic diagram of the pickup state of two earphone bodies of the smart earphone according to the embodiment of the present invention.
  • FIG. 12 is a schematic view showing the arrangement of the attracting magnet group and the Hall sensor of the smart earphone according to the embodiment of the present invention.
  • FIG. 13 is a schematic diagram showing the magnetic field distribution of a single attracting magnet group of the smart earphone according to the embodiment of the present invention.
  • Fig. 14 is a view showing the distribution of the magnetic field generated by the magnet and the attracting magnet in the state in which the two earphones are engaged in the embodiment of the present invention.
  • FIG. 15 is a schematic diagram showing the arrangement position of a magnet and a Hall sensor in a smart earphone according to another embodiment of the present invention.
  • Embodiments of the present invention provide a smart device having a detachable body.
  • the smart device in the embodiment of the present invention takes a smart earphone as an example, and the detachable body respectively describes the left and right earphone bodies of the smart earphone.
  • the smart device herein can include at least two bodies.
  • the smart earphone 100 includes a first earphone body 1 and a second earphone body 2.
  • One end of the two earphone bodies is connected by a connecting wire, and the other end is detachably coupled by a magnet inside the earphone body.
  • the two earphone bodies are respectively fixed to the left and right ears of the user when the user is in use, and are in a separated state.
  • the use here refers to the smart headphones playing music, voice, or audio files, and the user listens through two headphones.
  • the two earphone bodies can be in the pull-in state (as shown in FIG. 1), which is convenient for fixing and carrying, for example, can be hung on the user's neck as an accessory.
  • the smart earphone can determine whether the smart earphone is in the user use state or the working state by detecting the separation or the pull-in state of the two earphone bodies, and the two earphone bodies are combined to determine that the user does not use the smart earphone, if the two earphone bodies are separated Users can be considered to use smart headphones.
  • the two earphone bodies of the smart earphone are attracted by the first attracting magnet 12 and the second attracting magnet 22 respectively disposed in the two earphone bodies.
  • the first pull-in magnet 12 and the Hall sensor 11 are disposed on the first earphone body 1.
  • the second pull-in magnet 22 and the induction magnet 21 are placed together on the second earphone body 2.
  • the Hall sensor 11 is mounted on the circuit board 13 inside the casing of the first earphone body 1.
  • the Hall sensor 11 senses the magnetic field generated by the induction magnet 21, thereby issuing an indication signal, and the smart earphone determines the first earphone body 1 and the first according to the indication signal.
  • the earphone body 2 is sucked, that is, in a non-use state, wherein the suction surface 3 of the first earphone body 1 and the suction surface 4 of the second earphone body 2 are attached in the suction state (see FIG. 1). After bonding, a common bonding surface 6 is formed.
  • the Hall sensor includes a Hall element 111.
  • the Hall element 111 is exemplified by a semiconductor wafer. Both ends of the sheet are controlled by a current I.
  • a magnetic induction intensity is B.
  • a Hall voltage with a potential difference of UH will be generated in a direction perpendicular to the current and the magnetic field. The relationship between them is Where d is the thickness of the sheet, k is called the Hall coefficient, and its size is related to the material of the sheet. Since the potential difference generated by the Hall element 111 is integrated on one chip, it is called a Hall sensor.
  • the Hall sensor used in the embodiment of the present invention may be a linear Hall sensor composed of a Hall element, a linear amplifier, and an emitter follower, which outputs an analog quantity.
  • the Hall sensor can also be a switched Hall sensor consisting of a voltage regulator, a Hall element, a differential amplifier, a Schmitt trigger, and an output stage that outputs a digital quantity.
  • the smart earphone judges whether the two earphone bodies are in the suction state or separate according to the indication signal. status.
  • the smart earphone body controls the smart earphone body to enter the power saving mode according to the indication signal. Specifically, if it is determined that the two earphone bodies are in the pull-in state, indicating that the smart earphone body is in the unused state, the smart earphone can be controlled to enter the province. Electrical mode. If it is determined that the two earphone bodies are in a separated state, the smart earphone is controlled to enter the working mode. This part is a technique that is known to those skilled in the art.
  • the embodiment of the present invention uses the output indication signal to indicate that the Hall sensor outputs an indication signal according to the detected magnetic field in the pickup state, and the smart earphone can follow the indication according to the indication.
  • the signal determines that the two earphone bodies are in the pull-in state.
  • the specific high-level, low-level output of the specific Hall sensor, and how the smart earphone body judges the two earphone bodies in the pull-in state according to the signal output by the Hall sensor will not be described in detail.
  • the above-described Hall element 111 that is, a semiconductor wafer, a surface that vertically receives the magnetic line of inductance generated by the induction magnet 21 is referred to as a receiving surface 5 of the Hall sensor (as shown in FIG. 4), and the magnetic field generated by the induction magnet 21
  • the vertical equivalent component of the receiving surface 5 passing through the Hall sensor exceeds a threshold, and the Hall sensor outputs an indication signal.
  • the Hall sensor of the embodiment of the present invention can arbitrarily select a unipolar or bipolar Hall sensor.
  • the manufacturer can correspondingly set the position of the induction magnet 21, for example, selecting A unipolar Hall sensor that needs to receive a magnetic line perpendicular to the receiving surface 5 and from the Hall sensor to the sensing magnet 21, then the S pole of the sensing magnet 21 needs to be sucked The joint surface 6 and the N pole face away from the suction surface.
  • the polarity of the Hall sensor may not be limited as long as the magnetic flux passing through the Hall sensor reaches the threshold of the Hall sensor trigger.
  • the vertical equivalent component of the magnetic induction line passing through the receiving surface of the Hall sensor is zero. Or close to zero, the Hall sensor does not output an indication signal or an output separation indication signal.
  • the magnetic field generated by the first attracting magnet 12 is detected by the Hall sensor 11, and an erroneous indication signal is issued, thereby causing the smart earphone to be erroneously judged.
  • the earphone body is in a pull-in state.
  • One solution is to limit the polarity of the Hall sensor. Using a unipolar Hall sensor, the unipolar Hall sensor is a magnetic field that can only sense a single set direction (such as the N pole), making the first pull. The direction of the magnetic field of the magnet 12 passing through the Hall sensor does not satisfy the polarity requirement of the Hall sensor, so that the Hall sensor is not triggered.
  • the choice of the Hall sensor is limited, only the unipolar Hall sensor can be used, and the all-polar Hall sensor (bipolar Hall sensor) cannot be used.
  • the all-polar Hall sensor is a magnetic field that can sense the direction of the N pole or the S pole.
  • a unipolar Hall sensor can sense the induction coil of the Hall sensor vertically from top to bottom, or from bottom to bottom.
  • the bipolar Hall sensor senses the magnetic field from top to bottom and bottom to top of the induction coil of the Hall sensor.
  • the first attraction magnet 12 and the second attraction magnet 22 have opposite polarities at one end of the suction faces facing the two magnets, so that The two magnets are attracted to each other by the opposite sex.
  • the bonding surface 6 is a contact surface or a bonding surface of the two earphone bodies when the bonding surface 3 of the first earphone body and the bonding surface 4 of the second earphone body are in a state of being attracted. Referring to FIG. 8, since the size of the miniaturized smart device is limited, the distance between the magnets in FIG.
  • the induction magnet 21 is similar to the state of the Hall sensor 11.
  • the magnetic field of the induction magnet 21 is deviated from the receiving area of the Hall sensor, so that the magnetic induction line of the induction magnet 21 passing through the Hall sensor 11 in the pickup state cannot cause the Hall sensor to generate an inductive signal, thereby failing to issue. Indication signal.
  • the smart headset incorrectly judges that the headset is still in a separate state.
  • this problem can also be solved by adjusting the angle of the Hall sensor 11, for example, The angle of the entire Hall sensor 11 is such that the receiving surface of the Hall sensor 21 is attached to the induction magnet 21 in the state in which the two earphones are engaged, even if the magnetic field of the induction magnet 21 is disturbed by the attracting magnet, the magnetic field of the induction magnet 21
  • the sense line also has to pass through the Hall sensor 11.
  • there are strict requirements on the positions of the Hall sensor 11 and the induction magnet 21 Although technically achievable, the current size and structural design of the earphones will be greatly limited.
  • the position of the Hall sensor and the magnet is not limited, and the polarity of the Hall sensor is not limited, so that the product saves space in the manufacturing process and has greater flexibility. .
  • the solution of the present invention is specifically illustrated by the following specific examples.
  • the first earphone body 1 includes a casing, a circuit board 13, and a first attracting magnet group 10.
  • a circuit board 13 is mounted inside the housing, and the Hall sensor 11 is disposed on the circuit board 13.
  • the circuit board 13 can also be provided with a headphone related device such as a processor, a memory, a wireless transceiver, etc., which are not described in this embodiment.
  • the housing has a flat surface for flattening the two earphone bodies together, and the plane is defined as the bonding surface 3 of the first earphone body 1.
  • the Hall sensor 11 is located at one end of the circuit board 13 near the bonding surface 3, and is disposed in the magnetic field generated by the induction magnet 21 in the state of the induction magnet 21 corresponding to the position of the induction magnet 21, so as to be in the suction state.
  • the magnetic field generated by the induction magnet 21 in the second earphone body 2 is sensed.
  • the bonding surface 3 of the first earphone body 1 has a first recess 14 for receiving the first attracting magnet group 10.
  • the north-south axis of the first attracting magnet group 10 is substantially perpendicular to the abutting surface 3 and is fixed to the first groove 14.
  • the first attracting magnet group 10 includes a third attracting magnet 121 and a fourth attracting magnet 122.
  • the north and south poles are the vector of the magnet from the N pole to the S pole, that is, the direction of the magnetic pole.
  • the most magnetic part of the magnetic pole magnet is called the magnetic pole.
  • the magnet that rotates freely in the horizontal plane always has one magnetic pole pointing to the south when stationary, the other magnetic pole is pointing to the north, the south pole is called the south pole (S pole), and the north is called the north pole. (N pole).
  • the abutting surface 4 of the second earphone body 2 has a second recess 23 and a third recess 24 for receiving the second attracting magnet group 20, the third recess 24 is for accommodating the induction magnet 21.
  • the second attracting magnet group 20 includes a fifth attracting magnet 221 and a sixth attracting magnet 222.
  • Induction magnet 21 is close to Hall Sensor 11.
  • the third attracting magnet 121 and the fourth attracting magnet 122 are respectively attracted to the fifth attracting magnet 221 and the sixth attracting magnet 222 under the attraction of each other, and may be attracted together at other angles, without limitation.
  • the engagement is achieved by the use of the bonding surface 6, which is merely an embodiment.
  • the north and south axes of the third and fourth attracting magnets of the first attracting magnet group 10 are respectively substantially perpendicular to the bonding surface 3 of the first earphone body 1, and the magnetic pole directions are opposite. Further, the one end magnetic poles (N pole or S pole) of the third and fourth attracting magnets face the bonding surface 3, respectively.
  • the third pull-in magnet 121 and the fourth pull-in magnet 122 may be disposed in close proximity.
  • the magnetic pole of one end of the third attracting magnet 121 close to the bonding surface 6 is a south pole
  • the magnetic pole of the fourth attracting magnet 122 close to the bonding surface 6 is a north pole
  • the magnetic pole of the third attracting magnet 121 near the bonding surface 6 is the north pole
  • the magnetic pole of the fourth attracting magnet 122 near the end of the bonding surface 6 is the south pole.
  • the polar end of the third attracting magnet 121 and the fourth attracting magnet 122 are all close to the bonding surface 6, and the ends of the third and fourth attracting magnets close to the bonding surface 6 are opposite in polarity. .
  • the third attracting magnet 121 and the fourth attracting magnet 122 are allowed to exist a certain distance from the bonding surface 3 of the first earphone body, or in the third attracting magnet 121 and the fourth attracting magnet. 122 faces the end of the bonding surface 3, and other components are disposed between the outer casing and the outer casing. It is only necessary to consider that the two earphone bodies need to have a strong magnetic field when performing the suction. In order to generate a large attraction, it is preferable that the third attraction magnet 121 and the fourth attraction magnet 122 are as close as possible to the bonding surface 3.
  • the third pull-in magnet 121 and the fourth pull-in magnet 122 may also have a certain gap before.
  • FIG. 13 is a magnetic field diagram of a section after the combination of the third attracting magnet 121 and the fourth attracting magnet 122.
  • the third attracting magnet 121 and the fourth attracting magnet 122 are provided in accordance with the above-described arrangement, and the influence of the first attracting magnet group on the Hall sensor can be reduced.
  • the principle is that a strong magnetic field is formed between the south pole of the third attracting magnet 121 and the north pole of the fourth attracting magnet 122 at the same end, so that the third magnet of the third attracting magnet 121 and the fourth attracting magnet 122 itself
  • the magnetic field formed between the Arctic and the North Pole is greatly reduced.
  • a part of the magnetic lines of force originating from the north pole of the third attracting magnet 121 partially enters the south pole of the fourth attracting magnet 122, and a small portion enters the south pole of the third attracting magnet 121.
  • a portion of the magnetic lines of force originating from the north pole of the fourth attracting magnet 122 enters the south pole of the third attracting magnet 121, and a small portion enters the south pole of the fourth attracting magnet 122.
  • the north pole of the magnet 121 is connected to the south pole direction of the fourth attracting magnet 122, or from the north pole of the fourth attracting magnet 122 to the south pole direction of the third attracting magnet 121.
  • the magnetic field of the third attracting magnet 121 and the fourth attracting magnet 122 as a whole is weakened.
  • the high magnetic field density in Fig. 13 indicates that the magnetic field is strong. Conversely, if the magnetic field density is sparse, the magnetic field is weak.
  • a strong magnetic field is formed between the south pole of the third attracting magnet 121 and the north pole of the fourth attracting magnet 122, between them.
  • the magnetic flux density is relatively large, that is, the north pole of the fourth attracting magnet 122 is greatly attracted by the south pole magnetic field of the third attracting magnet 121, and the magnetic induction line generated by the north pole of the fourth attracting magnet 122 is mostly sucked toward the third suction.
  • the south pole of the magnet 121 is combined.
  • the third attracting magnet 121 and the fourth attracting magnet 122 face away from one end of the bonding surface 3, and the north pole of the third attracting magnet 121 and the south pole of the fourth attracting magnet 122 also form a strong magnetic field.
  • the magnetic field between the north and south poles of the third pull-in magnet 121 and the fourth pull-in magnet 122 will be weakened, and the Hall sensor is located on one side of the third pull-in magnet 121 or the fourth pull-in magnet 122, due to the third
  • the magnetic fields on both sides of the attracting magnet 121 and the fourth attracting magnet 122 are greatly weakened, and the magnetic fluxes of the third and fourth attracting magnets passing through the Hall sensor 11 are small, so that the Hall sensor is not caused to be mistaken. Detection.
  • the effect is optimal.
  • a stronger magnetic field is formed between the polar end of the combined third attracting magnet 121 and the polar end of the fourth attracting magnet 122, and the north and south poles of the third attracting magnet 121 and the fourth attracting magnet 122 themselves The magnetic field between them is weakened. Therefore, the influence on the Hall sensor 11 placed in the vicinity of the third attraction magnet 121 and the fourth attraction magnet 122 is also weakened. This makes it possible to flexibly select the position at which the Hall sensor 11 is mounted, thereby reducing the size of the smart device. Therefore, the structure of the earphone body is designed, and the design leaves a larger design space. Further, the Hall sensor 11 can be either unipolar or omnipolar. Because the Hall sensor 11 does not need to rely on unipolarity to prevent or weaken the first attracting magnet group 10 The influence of the magnetic field.
  • the outer casings of the two earphone bodies each have a flat plane as a bonding surface, so that the two earphone bodies can be attracted to each other by the flat plane.
  • the abutment surface may also be a curved surface or other shape.
  • the second attracting magnet group 20 is disposed on the second earphone body 2 as long as it is engaged with the first attracting magnet group 10.
  • the first attracting magnet group 10 is a combination of the third attracting magnet 121 and the fourth attracting magnet 122
  • the second attracting magnet group 20 can also It consists of a fifth attracting magnet 221 and a sixth attracting magnet 222.
  • the combination of the fifth attracting magnet 221 and the sixth attracting magnet 222 is similar to the combination of the third attracting magnet 121 and the fourth attracting magnet, and will not be described herein.
  • the influence of the second attracting magnet group 20 on the induction magnet 21 is weakened.
  • the polarity of the fifth attracting magnet 221 is opposite to the polarity of the third attracting magnet 121.
  • the polarity of the sixth attracting magnet 221 is opposite to the polarity of the fourth attracting magnet 122.
  • the combined third and second attracting magnets 121 and 122 are attracted to the combined fifth and second attracting magnets 221 and 222.
  • the position where the Hall sensor 11 is disposed determines that the Hall sensor 11 may not be attached to the induction magnet 21, but the design of the attraction magnet by the embodiment of the present invention causes the first attraction magnet group 10 and the second attraction magnet group
  • the magnetic field of 20 has little effect on the induction magnet 21 and the Hall sensor. It is advantageous for the Hall sensor 11 to detect the magnetic field of the induction magnet 21 and issue an indication signal. When the two earphone bodies are separated, the magnetic field generated by the first magnet group 10 does not cause interference to the Hall sensor.
  • the Hall sensor 11 of the embodiment of the present invention senses a sufficient magnetic field of the induction magnet 21 to emit an indication signal, and the smart earphone determines the first earphone according to an indication signal output by the Hall sensor, such as a high level indication signal.
  • the body 1 and the second earphone body 2 are in a suction state.
  • the earplug portions such as the first and second earphone bodies are placed in the ears of the user, since they are respectively disposed on the first earphone body 1 and the second earphone body 2
  • the distance between the Hall sensor 11 and the induction magnet 21 is relatively long, the Hall sensor 11 cannot detect the magnetic field of the induction magnet 21, and the Hall sensor 11 triggers an indication signal, such as a low level indication signal.
  • the smart earphone body determines that the two earphone bodies are separated according to the low level indication signal, and the earphone is currently in use.
  • the receiving surface of the Hall sensor 11 can be disposed at a position perpendicular to the bonding surface 3, and if so, the magnetic pole direction of the induction magnet 21 needs to be disposed along the parallel suction surface 3, so that the sense The magnetic line of the magnet 21 can pass through the receiving surface of the Hall sensor 11, because the Hall sensor 11 detects only the magnetic line perpendicular to the receiving surface thereof, or the vertical equivalent of the magnetic field passing through the receiving surface, but cannot A magnetic line of inductance parallel to the receiving surface is detected. In this way, the attracting magnet group does not affect the Hall sensor and the induction magnet 21.
  • the size of the third attracting magnet 121 is substantially the same as the size of the fourth attracting magnet 122; the size of the fifth attracting magnet 221 is substantially the same as the size of the sixth attracting magnet 222.
  • substantially parallel in the embodiments of the present invention may be interpreted as parallel, nearly parallel, or have a certain preset angle; “substantially perpendicular” may be interpreted as vertical, near vertical, or with a predetermined angle. .
  • the first attracting magnet group includes a first magnet 30; the second attracting magnet group includes a second magnet 40, and other components such as the induction magnet 21 and the Hall sensor 11, and printing
  • the inner body components of the circuit board and the like are identical to those of the above embodiment, and will not be described here, except that the north-south axis direction of the first magnet 30 and the second magnet 40 is parallel to the bonding surface 6, and the first magnet 30 is The first magnet 30 and the second magnet 40 are attracted to each other with respect to the polarity of the second magnet 40 being placed opposite to each other.

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Abstract

一种具有可分离本体的智能设备，通过在两个可分离的本体上分别设置一霍尔传感器(11)和一磁铁(21)，并通过霍尔传感器(11)检测磁铁(21)磁场来判断两个本体是否处于吸合状态。同时，两个本体上还需要分别设置吸合磁铁组(10,20)，实现两个本体吸合。每个吸合磁铁组(10,20)由两个极性相反的磁铁(121,122,221,222)并排组合而成。这样的吸合磁铁(121,122,221,222)组合减弱了在非磁极方向上的磁场强度，从而减少对霍尔传感器(11)检测磁场的影响。

Description

具有可分离本体的智能设备 技术领域
本发明涉及一种智能设备，尤其涉及一种具有可分离本体的智能设备。
背景技术
具有可分离本体的智能设备在很多应用场景中需要检测设备中的不同本体的连接状态。例如：穿戴设备中的具有可拆卸蓝牙耳机的手环，接电话时，用户会从手环的腕带上拆卸蓝牙耳机，挂在用户耳朵上从而接听电话，此时，手环就需要检测蓝牙耳机与腕带是否分离，若分离，执行通过耳机接听电话；还比如智能耳机，智能耳机包括两个耳机体，耳机体为包括电路板、电路板上的耳机元件及外壳等器件，由于智能耳机设备尺寸有限，电池续航能力弱，用户正常使用时左右耳机体分开；不使用时左右耳机体可贴合，方便携带，同时可以进入省电模式。通过检测两个耳机体是否分离即可判断智能耳机是否处于使用状态。如处于非使用状态，可以触发智能耳机进入低功耗模式。
现有技术中，通常通过距离检测、红外检测、霍尔传感器检测等方式检测两个本体是否分离，但经常会有外界干扰，检测的准确度不高，给用户的使用带来困扰。
发明内容
本发明实施例提供的智能设备，可以提高检测该智能设备的可分离本体的状态的准确性。
本发明实施例提供一种具有可分离本体的智能设备，所述智能设备包括第一本体和第二本体。所述第一本体设置有霍尔传感器和第一吸合磁铁组；所述第二本体设置有感应磁铁和第二吸合磁铁组。其中，所述第一本体与所述第二本体通过所述第一吸合磁铁组和所述第二吸合磁铁组吸合。所述第一 吸合磁铁组包括第三吸合磁铁和靠近第三吸合磁铁的第四吸合磁铁。所述第三吸合磁铁与所述第四吸合磁铁的磁极相反，所述第三吸合磁铁的南北极轴线与所述第四吸合磁铁的南北极轴线大致平行，且所述第三吸合磁铁与所述第四吸合磁铁的一端磁极分别面向所述第一本体的吸合面本体本体。
所述第二吸合磁铁组包括第五吸合磁铁和第六吸合磁铁。第五吸合磁铁和第六吸合磁铁分别与第三吸合磁铁和第四吸合磁铁吸合。第五吸合磁铁与第六吸合磁铁磁极方向相反，第五吸合磁铁的南北极轴线与第六吸合磁铁的南北极轴线大致平行，且第五吸合磁铁与第六吸合磁铁的一端磁极分别面向所述第二本体的吸合面。
所述第一本体与所述第二本体吸合状态下，所述霍尔传感器设置于所述感应磁铁产生的磁场范围内，所述霍尔传感器感测感应磁铁的磁场并发出指示信号。
由于每个吸合磁铁组由两个极性相反的磁铁并排组合而成。这样的吸合磁铁组合减弱了在非磁极方向上的磁场强度，从而减少对霍尔传感器检测磁场的干扰。
作为一种可行的实施方式，所述第三吸合磁铁与所述第四吸合磁铁贴合设置于第一本体中。两个磁铁紧密贴合，能有效吸引对方磁极方向的磁感线，从而减少对磁铁组周围元件的影响。
作为一种可行的实施方式，所述第五吸合磁铁与所述第六吸合磁铁贴合布设于第二本体中。
作为一种可行的实施方式，所述第一本体的外壳和第二本体的外壳均设有一平整平面作为所述吸合面。
作为一种可行的实施方式，所述霍尔传感器的磁感线接收面与所述第一本体的吸合面大致平行，所述感应磁铁南北极轴线方向与所述第二本体的吸合面大致垂直。
作为一种可行的实施方式，所述霍尔传感器的磁感线接收面与第一本体 的吸合面大致垂直，所述感应磁铁的南北极轴线方向与第二本体的吸合面大致平行。
作为一种可行的实施方式，第三吸合磁铁的尺寸与第四吸合磁铁的尺寸大致相同；第五吸合磁铁的尺寸与第六吸合磁铁的尺寸大致相同。
组成吸合磁铁组的磁铁尺寸大致相同可以有效减少影响感应磁铁和霍尔传感器的磁场强度。
作为一种可行的实施方式，所述第一本体、第二本体分别是智能耳机的耳机体。
作为一种可行的实施方式，所述智能设备根据霍尔传感器发出的信号，启动省电模式。
在吸合状态下，组合在一起的第三吸合磁铁和第四吸合磁铁与组合在一起的第五吸合磁铁和第六吸合磁铁吸合在一起。由于第三吸合磁铁和第四吸合磁铁极性相反并排设置，第五吸合磁铁和第六吸合磁铁也极性相反并排设置，这样吸合在一起之后，其磁场主要在由于第三吸合磁铁和第四吸合磁铁，以及第五吸合磁铁和第六吸合磁铁之间形成。对设置在附近的磁铁的磁场的影响较小。有利于霍尔传感器检测磁铁的磁场并发出指示信号。
另一方面提供一种具有可分离本体的智能设备，该智能设备包括第一本体和第二本体。第一本体设置有霍尔传感器和第一磁铁。第二本体设置有磁铁和第二磁铁。其中，所述第一本体与所述第二本体可分离设置，并通过所述第一磁铁和所述第二磁铁吸合。第一磁铁和第二磁铁的南北极轴线方向与吸合面平行，且第一磁铁与第二磁铁的极性相反放置，使得吸合状态下，第一磁铁与第二磁铁相吸合。
通过将两个吸合磁铁的磁极轴线沿平行吸合面设置，使得吸合磁铁的磁感线方向与霍尔传感器的接收面平行，可以有效减少两个吸合磁铁对霍尔传感器及磁铁的影响。
本发明实施例所涉及的词语“大致平行”，可以解释为平行、接近平行、 或者有预设角度；“大致垂直”可以解释为垂直、接近垂直、或者存在预设角度。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍。
图1是本发明实施例公开的一种智能耳机的整体示意图。
图2智能耳机的两个耳机体吸合状态的示意图。
图3是现有技术中霍尔传感器的结构示意图。
图4是霍尔传感器检测垂直通过其接收面的磁感线的示意图。
图5是现有技术中磁感线平行穿过霍尔传感器的示意图。
图6现有技术中智能耳机内磁铁和霍尔传感器的排布结构示意图。
图7是现有技术中吸合磁铁的磁场对霍尔传感器产生影响的示意图。
图8是现有技术中智能耳机的吸合磁铁对感应磁铁磁场影响的示意图。
图9是本发明实施例的智能耳机的一耳机体的结构分解示意图。
图10是本发明实施例的智能耳机的另一耳机体的结构分解示意图。
图11是本发明实施例的智能耳机的两个耳机体吸合状态的示意图。
图12是本发明实施例的智能耳机的吸合磁铁组和霍尔传感器的排布示意图。
图13是本发明实施例的智能耳机的单一吸合磁铁组的磁场分布示意图。
图14是本发明实施例的两个耳机吸合状态下，磁铁和吸合磁铁产生的磁场分布的示意图。
图15是本发明另一实施例公开的智能耳机内磁铁与霍尔传感器的排布位置示意图。
具体实施方式
本发明实施例提供一种具有可分离本体的智能设备。为说明方便，本发明实施例的智能设备以智能耳机为例，可分离本体分别为该智能耳机的左右耳机体进行说明。本领域技术人员可以理解，其他具有可分离的本体，并且可以处于分开或贴合状态的智能设备，也可以适用本发明，这里说的智能设备可以包括至少两个本体。
如图1所示，智能耳机100包括第一耳机体1和第二耳机体2。两个耳机体一端通过连接线连接，另一端可分离的通过耳机体内部的磁铁吸合。两个耳机体在用户使用时分别固定于用户的左右两个耳朵，处于分离状态。这里的使用是指智能耳机播放音乐、语音、或音频文件，用户通过两个耳机收听。
当用户不需要使用时，两个耳机体可以处于吸合状态(如图1所示)，方便固定和携带，如可以挂在用户的脖子上做为饰品。智能耳机通过检测两个耳机体的分开或吸合状态，即可判断智能耳机是否处于用户使用状态或工作状态，两个耳机体吸合则确定用户不使用智能耳机，如果两个耳机体分开则可以认为用户使用智能耳机。在不使用状态智能耳机可以进入降功耗模式，以达到省电的效果。
请参考图2，目前，智能耳机的两个耳机体是通过分别安置在两个耳机体中的第一吸合磁铁12和第二吸合磁铁22吸合。其中，第一吸合磁铁12和霍尔传感器11安置在第一耳机体1上。第二吸合磁铁22和感应磁铁21一起安置在第二耳机体2上。具体的，霍尔传感器11安装于第一耳机体1的壳体内部的电路板13上。第一耳机体1和第二耳机体2处于吸合状态时，霍尔传感器11会感应到感应磁铁21产生的磁场，从而发出指示信号，智能耳机根据该指示信号确定第一耳机体1和第二耳机体2吸合，也就是处于不使用状态，其中，吸合状态下，该第一耳机体1的吸合面3与第二耳机体2的吸合面4贴合(如图1)，贴合后形成共同的贴合面6。
其中，如图3所示，霍尔传感器包括一个霍尔元件111，霍尔元件111以半导体薄片为例，薄片两端通以控制电流I，当该薄片的垂直方向施加磁感应强度为B的匀强磁场，则在垂直于电流和磁场的方向上，将产生电势差为UH的霍尔电压。它们之间的关系为
Figure PCTCN2016098205-appb-000001
式中d为薄片的厚度，k称为霍尔系数，它的大小与薄片的材料有关。由于霍尔元件111产生的电势差很 集成在一个芯片上，称之为霍尔传感器。本发明实施例中采用的霍尔传感器可以是线性型霍尔传感器，由霍尔元件、线性放大器和射极跟随器组成，它输出模拟量。霍尔传感器也可以是开关型霍尔传感器由稳压器、霍尔元件、差分放大器，斯密特触发器和输出级组成，它输出数字量。
不管是哪一种霍尔传感器，都是可以设置成根据检测到的不同磁场强度，输出不同的信号，从而发出不同指示信号，智能耳机根据指示信号，判断两个耳机体处于吸合状态还是分开状态。智能耳机体根据所述指示信号，控制智能耳机体进入省电模式，具体地，若判断两个耳机体处于吸合状态，表示该智能耳机体处于不使用状态，则可以控制该智能耳机进入省电模式。若判断两个耳机体处于分开状态则控制该智能耳机进入工作模式。这部分是本领域普通技术人员了解的技术，为叙述方便，本发明实施例后续用输出指示信号来表示霍尔传感器根据检测到的吸合状态下的磁场输出指示信号，智能耳机可以根据这个指示信号，判断两个耳机体处于吸合状态。对具体霍尔传感器输出高电平，低电平，以及智能耳机体如何根据霍尔传感器输出的信号判断两个耳机体处于吸合状态等具体细节不再赘述。
为叙述方便，上述霍尔元件111，即半导体薄片，垂直接收感应磁铁21产生的磁感线的面称为霍尔传感器的接收面5(如图4所示)，当感应磁铁21产生的磁场穿过霍尔传感器的接收面5的垂直等效分量超过阈值，霍尔传感器则输出指示信号。需要解释的是，本发明实施例的霍尔传感器可以任意选择单极性或双极性的霍尔传感器，根据选择的霍尔传感器，制造厂家可以对应设定感应磁铁21的位置，比如，选择单极性的霍尔传感器，该单极性霍尔传感器需要接收垂直该接收面5且从霍尔传感器到感应磁铁21方向的磁感线，那么，就需要将感应磁铁21的S极朝向吸合面6，N极背离吸合面。当然，也可以不限定霍尔传感器的极性，只要有穿过霍尔传感器的磁通量达到霍尔传感器触发的阈值即可。另外，如图5所示，当磁场平行穿过霍尔传感器的的霍尔元件111，即与接收面大致平行时，则穿过霍尔传感器接收面的磁感线的垂直等效分量为零或接近于零，霍尔传感器不输出指示信号或输出分离指示信号。
上述针对本发明实施例涉及的霍尔传感器的大致原理简略描述，但是根据图2中吸合磁铁12、22、感应磁铁21及霍尔传感器11的设置方式，仍会影 响霍尔传感器检测的准确性。原因是，针对小型化的智能设备，霍尔传感器11与第一吸合磁铁12和/或第二吸合磁铁22的设置距离有限，两个磁铁吸合状态下或分离状态下，霍尔传感器11很可能会受到第一吸合磁铁12和/或第二吸合磁铁22产生的磁场的干扰，导致感应霍尔传感器11发出错误的指示信号，或不发出指示信号。例如，结合图6、图7，在两个耳机体分开状态下，第一吸合磁铁12产生的磁场，会被霍尔传感器11检测到，并发出错误的指示信号，从而导致智能耳机错误判断耳机体处于吸合状态。一种解决的方式是限定霍尔传感器的极性，使用单极性霍尔传感器，单极性霍尔传感器是只能感应到单一设定方向(如N极)的磁场，使第一吸合磁铁12穿过霍尔传感器的磁场方向不满足霍尔传感器的极性要求，从而不会触发霍尔传感器。但是这样，一方面，对霍尔传感器的选择造成限制，只能使用单极性霍尔传感器，而无法使用全极性霍尔传感器(双极性霍尔传感器)。其中，全极性霍尔传感器就是能感应到N极或S极方向的磁场，比如，单极性霍尔传感器你能感应到垂直该霍尔传感器的感应线圈从上到下，或从下到上的磁场，双极性霍尔传感器可以感应到垂直该霍尔传感器的感应线圈的从上到下和从下到上的磁场。
另一方面，如图6所示，在两个耳机体吸合的情况下，第一吸合磁铁12与第二吸合磁铁22在面向两个磁铁的吸合面的一端极性相反，使得两磁铁异性相吸合在一起。其中，该贴合面6为第一耳机体的贴合面3和第二耳机体的贴合面4吸合状态时的两个耳机体的接触面或贴合面。参考图8，由于小型化智能设备的尺寸有限，图8中各磁铁之间的距离受到限制，处于吸合状态的第一吸合磁铁12和第二吸合磁铁22与该感应磁铁21会相互排斥或吸引，图8中第一吸合磁铁12和第二吸合磁铁22吸合状态仍留有空隙，原因是，产品通常不会将两块磁铁直接设于吸合面上，两个耳机体通常都需要有外壳保护，第一吸合磁铁12和第二吸合磁铁22设置于外壳内部靠近吸合面的位置，因此，即使两耳机体贴合在一起，两块磁铁之间仍会存在或多或少的空隙，而不容易无缝贴合。感应磁铁21与霍尔传感器11的状态同样类似。
这样，会使感应磁铁21的磁场偏离出霍尔传感器的接收区域，导致在吸合状态下，感应磁铁21穿过霍尔传感器11的磁感线无法使霍尔传感器产生感应信号，从而无法发出指示信号。智能耳机错误地据此判断耳机仍处于分开的状态。但这个问题也可以通过调整霍尔传感器11的角度来解决，比如，调 整霍尔传感器11的角度，使得两个耳机吸合状态下，霍尔传感器21的接收面与感应磁铁21贴合，即使感应磁铁21的磁场被吸合磁铁干扰而偏离，感应磁铁21的磁感线也必然要穿过霍尔传感器11。但是这样就对霍尔传感器11和感应磁铁21的位置有严格的要求。虽然技术上也可以实现，但是目前耳机尺寸和结构设计将因此而大大受限。
因此，为了减少吸合磁铁对霍尔传感器的影响，不限定霍尔传感器以及磁铁的设置位置，同时也不限定霍尔传感器极性，使产品在制造过程中节省空间，有更大的灵活性。本发明实施例通过以下具体例子的方式具体说明本案的解决方案。
请参考图9，结合智能耳机举例说明本案实现方式。图9中，第一耳机体1包括壳体、电路板13、第一吸合磁铁组10。其中，壳体内部安装有电路板13，霍尔传感器11设置于该电路板13。当然，该电路板13上还可以设置有处理器、存储器、无线收发器等耳机相关器件，本实施例不一一描述。该壳体上具有一个平面，该平面用于将两个耳机体吸合在一起的平面，定义该平面作为第一耳机体1的贴合面3。霍尔传感器11位于电路板13上靠近贴合面3的一端，对应感应磁铁21的位置，也就是在吸合状态下，设置于感应磁铁21产生的磁场范围内，以便在吸合状态下，感测第二耳机体2内的感应磁铁21产生的磁场。第一耳机体1的贴合面3上有第一凹槽14，用于容置第一吸合磁铁组10。第一吸合磁铁组10的南北极轴向大致垂直于贴合面3，并固定于第一凹槽14。其中，第一吸合磁铁组10包括第三吸合磁铁121和第四吸合磁铁122。下面先对第二耳机体2的磁铁布置简要说明，再进一步结合第二耳机体2的磁铁布置对应性描述第一吸合磁铁组10的布置方式。其中，南北极轴向为磁铁从N极到S极的矢量，也就是磁极的方向。磁极为磁体上磁性最强的部分叫磁极，在水平面内自由转动的磁体，静止时总是一个磁极指向南方，另一个磁极指向北方，指向南的叫做南极(S极)，指向北的叫做北极(N极)。
参考图10和11，第二耳机体2的贴合面4有第二凹槽23及第三凹槽24，第二凹槽23用于容置第二吸合磁铁组20，第三凹槽24用于容纳感应磁铁21。第二吸合磁铁组20包括第五吸合磁铁221和第六吸合磁铁222。该在吸合状态下，第二凹槽23与第一耳机体1的第一凹槽14相对。感应磁铁21靠近霍尔传 感器11。第三吸合磁铁121，第四吸合磁铁122，分别和第五吸合磁铁221，第六吸合磁铁222在彼此吸引力作用下吸合，也可以以其他角度吸合在一起，不局限于利用贴合面6来实现吸合，此处仅是一种实施例。
具体地，第一吸合磁铁组10的第三、第四吸合磁铁的南北极轴线分别大致垂直于第一耳机体1的贴合面3，磁极方向相反。进一步，第三、第四吸合磁铁的一端磁极(N极或S极)分别面向贴合面3。
参考图12，作为一种实施方式，第三吸合磁铁121和第四吸合磁铁122可以为紧密靠近设置。在本实施例中，第三吸合磁铁121靠近贴合面6的一端磁极是南极，而第四吸合磁铁122靠近贴合面6的一端磁极是北极。或者第三吸合磁铁121靠近贴合面6的一端磁极是北极，第四吸合磁铁122靠近贴合面6一端的磁极是南极。总之，本发明实施例将第三吸合磁铁121和第四吸合磁铁122的极性一端都靠近贴合面6，且第三、第四吸合磁铁靠近贴合面6的一端极性相反。
可以理解的，第三吸合磁铁121和第四吸合磁铁122，与第一耳机体的贴合面3之间也允许存在一定距离，或在第三吸合磁铁121和第四吸合磁铁122面向贴合面3一端，与外壳之间，布设其他元件。只是考虑到两个耳机体在进行吸合时需要有较强的磁场，为了产生较大吸引力，优选第三吸合磁铁121和第四吸合磁铁122尽可能靠近贴合面3。
可选的，第三吸合磁铁121和第四吸合磁铁122之前也可以存在一定空隙。
图13是第三吸合磁铁121和第四吸合磁铁122组合之后的切面的磁场图。本事实例中，将第三吸合磁铁121与第四吸合磁铁122根据上述排布方式设置，可以减弱第一吸合磁铁组对霍尔传感器的影响。其原理在于，第三吸合磁铁121的南极，和位于同一端的第四吸合磁铁122的北极之间形成一个较强磁场，使得第三吸合磁铁121和第四吸合磁铁122自身的南极和北极之间的形成的磁场被大量减弱。即，原来从第三吸合磁铁121北极出发的磁力线，有一部分进入第四吸合磁铁122的南极，很少部分进入第三吸合磁铁121的南极。相同的，原来从第四吸合磁铁122北极出发的磁力线，有一部分进入第三吸合磁铁121的南极，很少部分进入第四吸合磁铁122的南极。也就是，从原来的第三或第四吸合磁铁的北极到南极的一部分磁感线，转变为从第三吸 合磁铁121的北极到第四吸合磁铁122的南极方向，或，从第四吸合磁铁122的北极到第三吸合磁铁121的南极方向。这样，第三吸合磁铁121，第四吸合磁铁122整体对外部影响的磁场就被减弱。
图13中磁力线密度高则表示磁场强，反之，磁力线密度稀疏，则表示磁场弱。在第三吸合磁铁121和第四吸合磁铁122靠近贴合面3的一端，第三吸合磁铁121的南极和第四吸合磁铁122的北极之间形成一个较强磁场，他们之间的磁力线密度较大，也就是第四吸合磁铁122的北极受到第三吸合磁铁121的南极磁场的较大吸引，第四吸合磁铁122的北极产生的磁感线大部分走向第三吸合磁铁121的南极。同理，第三吸合磁铁121和第四吸合磁铁122背离贴合面3一端，第三吸合磁铁121的北极和第四吸合磁铁122的南极也形成一个较强的磁场。而第三吸合磁铁121、第四吸合磁铁122的自身南北极之间的磁场将被削弱，霍尔传感器位于第三吸合磁铁121或第四吸合磁铁122的一侧，由于第三吸合磁铁121、第四吸合磁铁122两侧的磁场被大幅度减弱，那第三、第四吸合磁铁穿过霍尔传感器11的磁力线则很少，也就不会引起霍尔传感器误检测。
需要说明的是，为了削弱第三吸合磁铁121、第四吸合磁铁122自身南北极之间的磁场，需要让第三吸合磁铁121的两个极性端，分别和第四吸合磁铁122的相反的两个极性端之间的距离足够近，距离越近，第三吸合磁铁121和第四吸合磁铁122极性端之间的磁导率越大。磁力线总是走磁导率最大(即磁阻最小)的路径。也就是说，第三吸合磁铁121和第四吸合磁铁122极性端之间形成的磁场就越强，而第三吸合磁铁121和第四吸合磁铁122自身南北极之间形成的磁场就越弱。在第三吸合磁铁121和第四吸合磁铁122贴合对方的情况下，效果达到最佳。
组合后的第三吸合磁铁121的极性端和第四吸合磁铁122的极性端之间形成较强磁场，而在第三吸合磁铁121和第四吸合磁铁122自身的南北极之间的磁场被削弱。因此也减弱了对安置在第三吸合磁铁121和第四吸合磁铁122附近的霍尔传感器11的影响。这样可以灵活选择安装霍尔传感器11的位置，从而减少智能设备的尺寸。也因此给耳机体的结构设计，外观设计留下更大的设计空间。更进一步的，霍尔传感器11可以选择单极性，也可以采用全极性型。因为霍尔传感器11不需要依赖单极性来防止或减弱第一吸合磁铁组10 的磁场的影响。
在本发明实施例中，两个耳机体的外壳上均有一个平整的平面作为贴合面，方便两个耳机体利用该平整平面彼此吸合。当然，作为不同的实施方式，该贴合面也可以是曲面或其他形状。
第二吸合磁铁组20设置于第二耳机体2，只要配合第一吸合磁铁组10吸合即可。考虑到第一吸合磁铁组10是第三吸合磁铁121和第四吸合磁铁122的组合，为更好地与第一吸合磁铁组10吸合，第二吸合磁铁组20也可以由第五吸合磁铁221和第六吸合磁铁222组成。第五吸合磁铁221和第六吸合磁铁222的组合方式与第三吸合磁铁121和第四吸合磁铁的组合方式类似，此处不再赘述。这样，第二吸合磁铁组20对感应感应磁铁21的影响将减弱。当然，在靠近第二耳机体的贴合面4的一端，第五吸合磁铁221的极性与第三吸合磁铁121的极性相反。同理，在靠近贴合面4的一端，第六吸合磁铁221的极性与第四吸合磁铁122的极性相反。
请参见图14，在吸合状态下，组合在一起的第三吸合磁铁121和第四吸合磁铁122与组合在一起的第五吸合磁铁221和第六吸合磁铁222吸合，由于霍尔传感器11设置的位置决定，霍尔传感器11可能与感应磁铁21无法贴合，但通过本发明实施例对吸合磁铁的设计，使得第一吸合磁铁组10和第二吸合磁铁组20的磁场对感应磁铁21和霍尔传感器造成的影响很小。有利于霍尔传感器11检测感应磁铁21的磁场并发出指示信号。当两个耳机体分开后，第一磁铁组10产生的磁场也不会对霍尔传感器造成干扰。
本发明实施例的霍尔传感器11感测该感应磁铁21的足够强度磁场，从而发出指示信号，所述智能耳机根据霍尔传感器输出的指示信号，如高电平指示信号，来判断第一耳机体1和第二耳机体2处于吸合状态。当第一耳机体1和第二耳机体2分开时，如第一和第二耳机体的耳塞部分放置在用户的两耳中，由于分别设置在第一耳机体1和第二耳机体2上的霍尔传感器11和感应磁铁21之间距离较远，霍尔传感器11无法检测到感应磁铁21的磁场，霍尔传感器11则会触发指示信号，如发出低电平指示信号。这种情况下，智能耳机体根据该低电平指示信号判断两个耳机体分离，耳机目前处于使用状态。
可选的，霍尔传感器11的接收面可以考虑设置与贴合面3垂直的位置，如果这样设置，需要将感应磁铁21的磁极方向沿平行吸合面3设置，使得感 应磁铁21的磁感线能穿过霍尔传感器11的接收面，因为霍尔传感器11只检测垂直穿过其接收面的磁感线，或穿过接收面的磁场垂直等效分量，但是无法检测到与接收面平行的磁感线。这样设置，吸合磁铁组也不会对霍尔传感器和感应磁铁21产生影响。
可选地，第三吸合磁铁121的尺寸与第四吸合磁铁122的尺寸大致相同；第五吸合磁铁221的尺寸与第六吸合磁铁222的尺寸大致相同。
需要说明的，本发明实施例所涉及的词语“大致平行”，可以解释为平行、接近平行、或者有一定预设角度；“大致垂直”可以解释为垂直、接近垂直、或者有一定预设角度。
在另一实施例中，图15所示，第一吸合磁铁组包括第一磁铁30；第二吸合磁铁组包括第二磁铁40，其他元件，如感应磁铁21和霍尔传感器11、印刷电路板等耳机体内元件与上述实施例描述一致，此处不再敷述，不同点在于，第一磁铁30和第二磁铁40的南北极轴线方向与贴合面6平行，且第一磁铁30相对于第二磁铁40的极性相反放置，使得耳机吸合时，第一磁铁30与第二磁铁40相吸引。
通过将两个吸合磁铁的磁极轴线沿平行吸合面设置，可以有效减少两个吸合磁铁对霍尔传感器及磁铁的影响。
实施例中为方便理解，仅以智能耳机体为例进行说明，本领域技术人员可以理解，本发明也可以应用于其他利用磁铁吸合，并利用霍尔传感器来检测两端是否吸合的装置。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应所述以权利要求的保护范围为准。

Claims (9)

  1. 一种具有可分离本体的智能设备，其特征在于，所述智能设备包括：
    第一本体，霍尔传感器和第一吸合磁铁组固定于所述第一本体；
    第二本体，感应磁铁和第二吸合磁铁组固定于所述第二本体；
    其中，所述第一本体与所述第二本体通过所述第一吸合磁铁组和所述第二吸合磁铁组吸合；
    所述第一吸合磁铁组包括第三吸合磁铁和靠近第三吸合磁铁的第四吸合磁铁，所述第三吸合磁铁与所述第四吸合磁铁的磁极相反，所述第三吸合磁铁的南北极轴线与所述第四吸合磁铁的南北极轴线大致平行，且所述第三吸合磁铁与所述第四吸合磁铁的一端磁极分别面向所述第一本体的吸合面本体；
    所述第二吸合磁铁组包括第五吸合磁铁和第六吸合磁铁，第五吸合磁铁和第六吸合磁铁分别与第三吸合磁铁和第四吸合磁铁吸合；第五吸合磁铁与第六吸合磁铁磁极方向相反，第五吸合磁铁的南北极轴线与第六吸合磁铁的南北极轴线大致平行，且第五吸合磁铁与第六吸合磁铁的一端磁极分别面向所述第二本体的吸合面；
    所述第一本体与所述第二本体吸合状态下，所述霍尔传感器设置于所述感应磁铁产生的磁场范围内，所述霍尔传感器感测感应磁铁的磁场并发出指示信号。
  2. 如权利要求1所述的设备，其特征在于，所述第三吸合磁铁与所述第四吸合磁铁贴合设置于第一本体中。
  3. 如权利要求1或2所述的设备，其特征在于，所述第五吸合磁铁与所述第六吸合磁铁贴合布设于第二本体中。
  4. 如权利要求1-3任一项所述的设备，其特征在于，所述第一本体的外壳和第二本体的外壳均设有一平整平面作为所述吸合面。
  5. 如权利要求1-4任一项所述的设备，其特征在于，所述霍尔传感器的磁感线接收面与所述第一本体的吸合面大致平行，所述感应磁铁南北极轴线方向与所述第二本体的吸合面大致垂直。
  6. 如权利要求1-4任一项所述的设备，其特征在于，所述霍尔传感器的磁感线接收面与第一本体的吸合面大致垂直，所述感应磁铁的南北极轴线方向与第二本体的吸合面大致平行。
  7. 如权利要求1-6任一项所述的设备，其特征在于，第三吸合磁铁的尺寸与第四吸合磁铁的尺寸大致相同；第五吸合磁铁的尺寸与第六吸合磁铁的尺寸大致相同。
  8. 如权利要求1-7任一项所述的设备，其特征在于，所述第一本体、第二本体分别是智能耳机体的耳机体。
  9. 如权利要求1-8任一项所述的设备，其特征在于，所述智能设备根据霍尔传感器发出的信号，启动省电模式。
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