Measuring instrument, control method and control device thereof

Abstract

The present invention relates to the field of blood pressure measurement technology, and discloses a measuring instrument and a control method and a control device thereof. The measuring instrument includes: a main unit having a first limiting structure, the first limiting structure including a limiting socket; an tracheal head including a tracheal plug suitable for being inserted into the limiting socket and sealed therewith; a magnetic device provided on one of the first limiting structure and the tracheal head, and suitable for generating a magnetic attraction force when the magnetic device is powered on; a connector made of a magnetic material provided on the other of the first limiting structure and the tracheal head, and after the tracheal plug is inserted into the limiting socket and installed in place, the magnetic attraction force of the magnetic device is suitable for acting on the connector. After the present invention powers on the magnetic device, the magnetic attraction force generated by the magnetic device acts on the connector, so that the tracheal head can be firmly fixed in the limiting socket. During the process of measuring blood pressure, the tracheal head will not fall off from the limiting socket, which is convenient for users to measure blood pressure.

Description

Technical Field

[0001] The present invention relates to the technical field of blood pressure measurement, and in particular to a measuring instrument and a control method and a control device thereof. Background Art

[0002] Hypertension is one of the most common medical diseases. It is widespread, affecting everyone from the elderly to the young. Patients with hypertension need to pay close attention to their physical condition and gradually treat the disease through diet and lifestyle changes. To better monitor the patient's blood pressure, a sphygmomanometer was developed.

[0003] A sphygmomanometer is an instrument used to measure blood pressure. Existing sphygmomanometers are categorized as mercury sphygmomanometers, electronic sphygmomanometers, and spring-type sphygmomanometers. Spring-type sphygmomanometers and electronic sphygmomanometers are more commonly used. Compared to spring-type sphygmomanometers, electronic sphygmomanometers are significantly more intelligent, user-friendly, and more user-friendly.

[0004] In the related art, the tracheal head of the blood pressure monitor cuff is connected to the air hole on the main unit by plugging, and the air tightness is ensured by a sealing ring. After plugging, when the tracheal head is pulled by external force, the tracheal head is easy to fall off from the air hole. When measuring blood pressure, if the tracheal head falls off, it is necessary to reinsert the tracheal head into the air hole, which results in a poor user experience. Summary of the Invention

[0005] In view of this, the present invention provides a measuring instrument and a control device and a control method thereof to solve the problem that the tracheal head is easily detached from the air hole.

[0006] In a first aspect, the present invention provides a measuring instrument, comprising:

[0007] The host has a first limiting structure, wherein the first limiting structure includes a limiting hole;

[0008] The tracheal head comprises a tracheal plug adapted to be inserted into the limiting plug hole and sealed therewith;

[0009] a magnetic attraction device, disposed on one of the first limiting structure and the tracheal head, and adapted to generate a magnetic attraction force when energized;

[0010] A connecting piece made of magnetic material is arranged on the other of the first limiting structure and the tracheal head. After the tracheal plug is inserted into the limiting socket and installed in place, the magnetic attraction force of the magnetic device is suitable for acting on the connecting piece.

[0011] Beneficial effects: When blood pressure needs to be measured, the tracheal plug is inserted into the limiting socket and sealed with the limiting socket. After the magnetic device is energized, the magnetic force generated by the magnetic device acts on the connector, so that the tracheal head can be firmly fixed in the limiting socket. During the blood pressure measurement process, the tracheal head will not fall off from the limiting socket, which is convenient for users to measure blood pressure.

[0012] In an optional embodiment, the magnetic device is arranged on the first limiting structure, and the connecting piece is arranged on the tracheal head.

[0013] Beneficial effect: Since the host is provided with a power supply, the magnetic attraction device is arranged on the first limiting structure, which facilitates powering on the magnetic attraction device.

[0014] In an optional embodiment, the first limiting structure also includes a first abutting surface, the limiting socket and the magnetic device are arranged on the first abutting surface, and the tracheal head also includes a second limiting structure located outside the tracheal plug. When the tracheal plug is inserted into the limiting socket, the second limiting structure abuts against the first abutting surface, and the connecting member is arranged on the second limiting structure.

[0015] Beneficial effect: When blood pressure needs to be measured, the tracheal plug is inserted into the limiting socket and sealed with the limiting socket. At this time, the second limiting structure is against the first abutting surface. After the magnetic device is energized, the magnetic force generated by the magnetic device acts on the connector, so the tracheal head can be firmly fixed in the limiting socket. During the blood pressure measurement process, the tracheal head will not fall off from the limiting socket, which is convenient for users to measure blood pressure.

[0016] In an optional embodiment, the first limiting structure further includes a stop structure, the stop structure including a stop block and a stop strip extending from the stop block, a gap being formed between the stop strip and the first abutting surface in a direction perpendicular to the first abutting surface, and the magnetic attraction device is close to the stop block and opposite to the stop strip;

[0017] The second limiting structure is suitable for being screwed into between the stopping strip and the first abutting surface from a gap between an end of the stopping strip away from the stopping block and the first abutting surface.

[0018] Beneficial effect: When blood pressure needs to be measured, first insert the tracheal plug into the limiting socket so that the second limiting structure abuts against the first abutment surface, and then rotate the tracheal head. The tracheal plug and the second limiting structure rotate as they do so, so that the second limiting structure is screwed from the gap between the end of the stop bar away from the stop block and the first abutment surface into the gap between the stop bar and the first abutment surface. After rotating into place, the magnetic device is energized, and the magnetic force generated by the magnetic device acts on the connecting part to prevent the tracheal head from rotating in the opposite direction and leaving the stop bar. At the same time, the stop bar blocks the second limiting structure, so that the tracheal head can be firmly fixed in the limiting socket. During the process of measuring blood pressure, the tracheal head will not fall off from the limiting socket, which is convenient for users to measure blood pressure.

[0019] In an optional embodiment, the stop block has a first stop surface and a second stop surface, the first stop surface is used to prevent the tracheal head from rotating in a first direction, and after the tracheal head rotates in a second direction opposite to the first direction, the second limiting structure abuts against the second stop surface, and the second stop surface is used to prevent the tracheal head from continuing to rotate in the second direction.

[0020] Beneficial effect: The first stop surface can prevent the tracheal head from rotating in the first direction. Therefore, after the tracheal plug is inserted into the limiting hole, the tracheal head can only rotate in the second direction opposite to the first direction, which can prevent the user from rotating the tracheal head in the wrong direction. The second stop surface can prevent the tracheal head from continuing to rotate in the second direction, which can prevent the tracheal head from continuing to rotate after it has been rotated into place.

[0021] In an optional embodiment, the first abutting surface is provided with a first limiting groove, the magnetic attraction device is provided in the first limiting groove, and an end portion of the magnetic attraction device is flush with the first abutting surface;

[0022] The second limiting structure has a second abutting surface suitable for abutting against the first abutting surface. The second limiting structure is provided with a second limiting groove. The connecting member is arranged in the second limiting groove and its end is flush with the second abutting surface.

[0023] Beneficial effect: by making the end of the magnetic device flush with the first abutting surface, and the end of the connecting piece flush with the second abutting surface, the first abutting surface and the end surface of the second limiting structure are flat, and the structure is simple and reliable.

[0024] In an optional embodiment, the area of the magnetic attraction region generated by the magnetic attraction device is larger than the end surface area of the connecting member.

[0025] Beneficial effect: Since the various preparations before measuring blood pressure may cause the second limiting structure to slightly move away from the rotated position, by making the area of the magnetic attraction area generated by the magnetic attraction device larger than the end area of the connecting piece, when the second limiting structure slightly moves away from the rotated position, the connecting piece can still be effectively attracted by powering the magnetic attraction device.

[0026] In an optional embodiment, at least two second limiting structures are provided, and correspondingly, at least two stop structures are provided and are rotationally symmetrical.

[0027] Beneficial effect: By providing at least two second limiting structures and two stop structures that are rotationally symmetrical, the force on the tracheal head can be made more balanced.

[0028] In an optional embodiment, two second limiting structures are symmetrically provided, and correspondingly, two stopping structures are provided.

[0029] Beneficial effect: by symmetrically providing two second limiting structures and two stop structures, the force on the tracheal head can be made more balanced. Specifically, when blood pressure needs to be measured, the tracheal plug is first inserted into the limiting socket so that the two second limiting structures respectively abut against the first abutting surface. Then, the tracheal head is rotated. The tracheal plug and the two second limiting structures rotate accordingly, so that one of the second limiting structures is screwed into the gap between the end of one of the stop bars away from the stop block and the first abutting surface, and the other second limiting structure is screwed into the gap between the end of the other stop bar away from the stop block and the first abutting surface. After being rotated into place, the magnetic device is energized, and the magnetic attraction force generated by the magnetic device acts on the connector to prevent the tracheal head from rotating in the opposite direction and leaving the stop bar. At the same time, the stop bar blocks the second limiting structure, so that the tracheal head can be firmly fixed in the limiting socket. During the blood pressure measurement process, the tracheal head will not fall off from the limiting socket, which is convenient for users to measure blood pressure.

[0030] In an optional embodiment, when the tracheal plug is inserted into the limiting plug hole, each of the second limiting structures abuts against one of the first stop surfaces.

[0031] Beneficial effect: The first stop surface can prevent the tracheal head from rotating in the first direction. Therefore, after the tracheal plug is inserted into the limiting hole, the tracheal head can only rotate in the second direction opposite to the first direction, which can prevent the user from rotating the tracheal head in the wrong direction. The second stop surface can prevent the tracheal head from continuing to rotate in the second direction, which can prevent the tracheal head from continuing to rotate after it has been rotated into place.

[0032] In an optional embodiment, the stop strip has an arc-shaped contact edge suitable for contacting the outer peripheral surface of the tracheal head.

[0033] Beneficial effect: Since the contact edge of the stop strip can maintain contact with the outer peripheral surface of the tracheal head, the two stop strips cooperate to limit the rotation of the tracheal head and prevent the tracheal head from shaking.

[0034] In an optional embodiment, the side wall of the main unit is recessed to form a limiting groove, the first abutting surface constitutes the bottom wall of the limiting groove, there is a gap between the stop strip and the side wall of the limiting groove, and the second limiting structure has a radial dimension of the tracheal head that is larger than a radial dimension of the stop strip of the limiting socket.

[0035] Beneficial effect: The radial size of the second limiting structure in the tracheal head is larger than the radial size of the stop strip in the limiting hole, and the second limiting structure can be seen through the gap. Therefore, it is possible to observe whether the second limiting structure is rotated into place through the gap between the stop strip and the side wall of the limiting groove.

[0036] In an optional embodiment, the tracheal plug has an insertion end suitable for inserting into the limiting plug hole, and the outer diameter of the tracheal plug gradually increases from the insertion end toward the direction away from the insertion end.

[0037] Beneficial effect: The outer diameter of the tracheal plug gradually increases from the insertion end to the direction away from the insertion end, which can guide the installation of the tracheal plug and facilitate the smooth insertion of the tracheal plug into the limiting socket.

[0038] In an optional embodiment, the tracheal head is provided with a friction portion suitable for gripping.

[0039] Beneficial effect: By providing the friction portion, it is convenient for the user to hold and rotate the tracheal head.

[0040] In a second aspect, the present invention further provides a control method for a measuring instrument, which is applied to the measuring instrument, and the control method includes:

[0041] Determine whether the measuring instrument has started measuring;

[0042] If so, power is supplied to the magnetic device.

[0043] Beneficial Effects: Before the measuring instrument begins measuring, the magnetic device is de-energized, allowing the user to complete pre-measurement preparations. The magnetic device is then energized when the measuring instrument begins measuring, allowing the tracheal tip to be securely secured in the retaining jack. During blood pressure measurement, the tracheal tip will not fall out of the retaining jack, making it easier for the user to measure blood pressure. When the measuring instrument is not measuring blood pressure, the magnetic device is de-energized, which is more suitable for user scenarios and avoids the weakening of magnetic properties associated with traditional magnets, thereby increasing magnetic stability.

[0044] In an optional embodiment, the control method further includes:

[0045] After the measurement is completed, the power-on time of the magnetic attraction device is adjusted or the power is turned off according to the test result.

[0046] Beneficial effect: After the measurement is completed, the power-on time of the magnetic attraction device can be adjusted or the power-on of the magnetic attraction device can be cut off according to the test results. It can be applied to various scenarios and is more convenient for users.

[0047] In an optional embodiment, adjusting the power-on duration of the magnetic device or powering off the magnetic device according to the test result includes:

[0048] If the measurement result is displayed normally, the magnetic device remains powered on for the first preset time;

[0049] If the first error message is prompted, the magnetic device remains powered on for a second preset time period;

[0050] If a second error message is prompted, the magnetic device remains powered on for a third preset time period;

[0051] If the third error message is prompted, the power supply to the magnetic device is cut off.

[0052] Beneficial effect: After the measurement is completed, if the measurement result is displayed normally, the magnetic device will remain powered on for the first preset time, during which the user can view the blood pressure measurement value. If the first error message is prompted, the magnetic device will remain powered on for the second preset time. If the second error message is prompted, the magnetic device will remain powered on for the third preset time. If the third error message is prompted, the magnetic device will be powered off. In this embodiment, the magnetic device retains corresponding power-on times for a variety of different working conditions. During the period when the error message allows the user to adjust, the power-on retention time of the magnetic device is intelligently adjusted according to the user's situation, and the tracheal head is firmly fixed in the limit socket to ensure airtightness and measurement accuracy.

[0053] In an optional embodiment, after the magnetic device is powered on for a first preset time, and / or the magnetic device is powered on for a second preset time, and / or the magnetic device is powered on for a third preset time, the method further includes:

[0054] Determine whether to re-measure;

[0055] If so, it is determined whether the measuring instrument starts measuring, and if not, the magnetic attraction device is powered off.

[0056] Beneficial effect: After the user completes the measurement, whether the measurement result is displayed normally or an error is prompted, after retaining the corresponding preset time for the magnetic device, it is determined whether to re-measure. If so, the above steps of determining whether the measuring instrument has started measuring are repeated. If no re-measurement is performed, the magnetic device is powered off, which will not produce the magnetic weakening phenomenon of traditional magnets and increase the stability of magnetic attraction.

[0057] In an optional embodiment, adjusting the power-on duration of the magnetic device or powering off the magnetic device according to the test result further includes:

[0058] If it is detected that the user presses the "stop" button, the power to the magnetic device is cut off.

[0059] Beneficial effect: When the user presses the "stop" button, the power to the magnetic device is cut off, which is more in line with the usage scenario.

[0060] In an optional embodiment, the control method further includes:

[0061] After the measurement is completed, the magnetic device remains powered on for a fourth preset time period;

[0062] Determine whether to re-measure;

[0063] If so, it is determined whether the measuring instrument starts measuring, and if not, the magnetic attraction device is powered off.

[0064] Beneficial effect: After the measurement is completed, the magnetic device remains powered on for the fourth preset time. During this period, the user can check the blood pressure measurement value. If the user does not want to re-measure, the cuff on the arm can be removed, the magnetic device is powered off, and the tracheal head is pulled out. If re-measurement is required, the magnetic device will not be powered off during the user's adjustment process to prevent the tracheal head from loosening, thereby ensuring airtightness and measurement accuracy.

[0065] In a third aspect, the present invention further provides a control device for a measuring instrument, which is applied to the measuring instrument, and the control device comprises:

[0066] A first judgment module is used to judge whether the measuring instrument has started measuring;

[0067] The first execution module is used to power on the magnetic attraction device when the measuring instrument starts measuring.

[0068] Beneficial Effects: Before the measuring instrument begins measuring, the magnetic device is de-energized, allowing the user to complete pre-measurement preparations. The magnetic device is then energized when the measuring instrument begins measuring, allowing the tracheal tip to be securely secured in the retaining jack. During blood pressure measurement, the tracheal tip will not fall out of the retaining jack, making it easier for the user to measure blood pressure. When the measuring instrument is not measuring blood pressure, the magnetic device is de-energized, which is more suitable for user scenarios and avoids the weakening of magnetic properties associated with traditional magnets, thereby increasing magnetic stability.

[0069] In a fourth aspect, the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the control method. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0071] Figure 1 This is a front view of a measuring instrument according to an embodiment of the present invention when the tracheal head is just inserted into the limiting socket;

[0072] Figure 2 for Figure 1 A front sectional view of the first limiting structure;

[0073] Figure 3 This is a front view of a measuring instrument according to an embodiment of the present invention when the tracheal tip is inserted into the limiting socket and rotated into position;

[0074] Figure 4 This is a front cross-sectional view of a measuring instrument according to an embodiment of the present invention when the tracheal head is inserted into the limiting socket and rotated into position;

[0075] Figure 5 Schematic diagram of the structure of the tracheal head;

[0076] Figure 6 for Figure 5 Longitudinal section of the tracheal head;

[0077] Figure 7 is a structural schematic diagram of the first limiting structure;

[0078] Figure 8 This is a schematic diagram of the structure after the tracheal head is inserted into the limiting hole;

[0079] Figure 9 for Figure 8 A longitudinal section view of

[0080] Figure 10 for Figure 9 Enlarged view of point A in the middle;

[0081] Figure 11 This is a flow chart of a method for controlling a measuring instrument according to an embodiment of the present invention;

[0082] Figure 12 The present invention is a flowchart of a method for controlling a measuring instrument according to an alternative embodiment of the present invention.

[0083] Description of reference numerals:

[0084] 1. First limiting structure; 101. Limiting socket; 102. First abutting surface; 103. Stopping structure; 1031. Stop block; 10311. First stopping surface; 10312. Second stopping surface; 1032. Stopping strip; 10321. Contact edge; 104. Gap; 2. Tracheal head; 201. Tracheal plug; 2011. Insertion end; 202. Second limiting structure; 2021. Second abutting surface; 203. Friction portion; 3. Magnetic device; 4. Connector; 5. Sealing ring. DETAILED DESCRIPTION

[0085] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0086] The following combination Figures 1 to 12 , describing embodiments of the present invention.

[0087] According to an embodiment of the present invention, in a first aspect, a measuring instrument is provided, including a main unit, a tracheal head 2, a magnetic attraction device 3, and a connecting member 4 made of a magnetic material.

[0088] The main unit has a first limiting structure 1, which includes a limiting socket 101; the tracheal head 2 includes a tracheal plug 201 suitable for being inserted into the limiting socket 101 and sealed therewith; the magnetic device 3 is arranged on one of the first limiting structure 1 and the tracheal head 2, and is suitable for generating a magnetic force when powered on; the connecting member 4 is arranged on the other of the first limiting structure 1 and the tracheal head 2, and after the tracheal plug 201 is inserted into the limiting socket 101 and installed in place, the magnetic force of the magnetic device 3 is suitable for acting on the connecting member 4.

[0089] In this embodiment, when blood pressure needs to be measured, the tracheal plug 201 is inserted into the limiting socket 101 and sealed with the limiting socket 101. After the magnetic device 3 is energized, the magnetic force generated by the magnetic device 3 acts on the connector 4, so that the tracheal head 2 can be firmly fixed in the limiting socket 101. During the blood pressure measurement process, the tracheal head 2 will not fall off from the limiting socket 101, which is convenient for users to measure blood pressure.

[0090] Specifically in one embodiment, the connecting member 4 can be an iron block.

[0091] In a specific embodiment, the measuring instrument may be a blood pressure monitor.

[0092] In one embodiment, the magnetic device 3 is provided on the first limiting structure 1 , and the connecting member 4 is provided on the tracheal head 2 .

[0093] In this embodiment, since the host is provided with a power supply, the magnetic attraction device 3 is arranged on the first limiting structure 1 to facilitate powering on the magnetic attraction device 3 .

[0094] In one embodiment, Figures 2 to 10 The first limiting structure 1 includes a first abutting surface 102 located outside the end of the limiting socket 101, the magnetic device 3 is provided on the first abutting surface 102, the tracheal head 2 includes a second limiting structure 202 located outside the tracheal plug 201, when the tracheal plug 201 is inserted into the limiting socket 101, the second limiting structure 202 abuts against the first abutting surface 102, and the connecting member 4 is provided on the second limiting structure 202.

[0095] In this embodiment, when blood pressure needs to be measured, the tracheal plug 201 is inserted into the limiting socket 101 and sealed with the limiting socket 101. At this time, the second limiting structure 202 is abutted against the first abutting surface 102. After the magnetic device 3 is energized, the magnetic force generated by the magnetic device 3 acts on the connector 4, so that the tracheal head 2 can be firmly fixed in the limiting socket 101. During the blood pressure measurement process, the tracheal head 2 will not fall off from the limiting socket 101, which is convenient for users to measure blood pressure.

[0096] In an embodiment not shown in the figures, the magnetic device 3 can be provided in the limiting socket 101 , and the connector 4 can be provided on the tracheal plug 201 .

[0097] In one embodiment, Figure 7 and Figure 8 As shown, the first limiting structure 1 also includes a stop structure 103, the stop structure 103 includes a stop block 1031 and a stop strip 1032 extending from the stop block 1031, and in a direction perpendicular to the first abutting surface 102, there is a gap between the stop strip 1032 and the first abutting surface 102, and the magnetic device 3 is close to the stop block 1031 and opposite to the stop strip 1032; the second limiting structure 202 is suitable for being screwed into between the stop strip 1032 and the first abutting surface 102 from the gap between the end of the stop strip 1032 away from the stop block 1031 and the first abutting surface 102.

[0098] In this embodiment, when blood pressure needs to be measured, the tracheal plug 201 is first inserted into the limiting socket 101 so that the second limiting structure 202 is abutted against the first abutting surface 102, and then the tracheal head 2 is rotated. The tracheal plug 201 and the second limiting structure 202 rotate as they rotate, so that the second limiting structure 202 is screwed into the gap between the stop bar 1032 and the first abutting surface 102 from the end of the stop bar 1032 away from the stop block 1031. After rotating into place, the magnetic device 3 is energized, and the magnetic attraction force generated by the magnetic device 3 acts on the connecting part 4 to prevent the tracheal head 2 from rotating in the opposite direction and leaving the stop bar 1032. At the same time, the stop bar 1032 blocks the second limiting structure 202, so that the tracheal head 2 can be firmly fixed in the limiting socket 101. During the process of measuring blood pressure, the tracheal head 2 will not fall off from the limiting socket 101, which is convenient for users to measure blood pressure.

[0099] In one embodiment, the stop block 1031 is connected to the first abutting surface 102 and protrudes from the first abutting surface 102. In an embodiment not shown in the figure, the stop block 1031 may not be connected to the first abutting surface 102, and a certain gap is left between the stop block 1031 and the first abutting surface 102.

[0100] In one embodiment, the stop block 1031 has a first stop surface 10311 and a second stop surface 10312. The first stop surface 10311 is used to prevent the tracheal head 2 from rotating in a first direction. After the tracheal head 2 rotates in a second direction opposite to the first direction, the second limiting structure 202 abuts against the second stop surface 10312. The second stop surface 10312 is used to prevent the tracheal head 2 from continuing to rotate in the second direction.

[0101] In this embodiment, the first stop surface 10311 can prevent the tracheal head 2 from rotating in the first direction. Therefore, after the tracheal plug 201 is inserted into the limiting hole, the tracheal head 2 can only rotate in a second direction opposite to the first direction, which can prevent the user from rotating the tracheal head 2 in the wrong direction. The second stop surface 10312 can prevent the tracheal head 2 from continuing to rotate in the second direction, which can prevent the tracheal head 2 from continuing to rotate after it has been rotated into place.

[0102] In one embodiment, when the tracheal plug 201 is inserted into the limiting hole 101, the second limiting structure 202 abuts against the first stop surface 10311, so that after the tracheal plug 201 is inserted into the limiting hole, the tracheal head 2 can only be rotated in a second direction opposite to the first direction, thereby preventing the user from rotating the tracheal head 2 in the wrong direction.

[0103] In an alternative embodiment, when the tracheal plug 201 is inserted into the limiting plug hole 101, the second limiting structure 202 does not contact the first stop surface 10311, and there is a certain gap between them.

[0104] In one embodiment, Figure 10 As shown, the first abutting surface 102 is provided with a first limiting groove, the magnetic device 3 is provided in the first limiting groove and the end of the magnetic device 3 is flush with the first abutting surface 102; the second limiting structure 202 has a second abutting surface 2021 suitable for abutting against the first abutting surface 102, the second limiting structure 202 is provided with a second limiting groove, the connecting member 4 is provided in the second limiting groove and its end is flush with the second abutting surface 2021.

[0105] In this embodiment, when blood pressure needs to be measured, the tracheal plug 201 is first inserted into the limiting socket 101 so that the second abutting surface 2021 abuts against the first abutting surface 102, and then the tracheal head 2 is rotated. The tracheal plug 201 and the second limiting structure 202 rotate as they rotate, so that the second limiting structure 202 is screwed into the gap between the stop bar 1032 and the first abutting surface 102 from the end of the stop bar 1032 away from the stop block 1031. After rotating into place, the magnetic attraction device 3 is energized, and the magnetic attraction force generated by the magnetic attraction device 3 acts on the connecting part 4 to prevent the tracheal head 2 from rotating in the opposite direction and leaving the stop bar 1032. At the same time, the stop bar 1032 blocks the second limiting structure 202, so that the tracheal head 2 can be firmly fixed in the limiting socket 101. During the process of measuring blood pressure, the tracheal head 2 will not fall off from the limiting socket 101, which is convenient for users to measure blood pressure. By making the end of the magnetic device 3 flush with the first abutting surface 102 and the end of the connecting member 4 flush with the second abutting surface 2021 , the end surfaces of the first abutting surface 102 and the second limiting structure 202 are flat, and the structure is simple and reliable.

[0106] In an embodiment not shown in the figure, the magnetic device 3 can be protruded from the first abutting surface 102 and close to the stop block 1031, and the connecting member 4 is arranged on the side of the second limiting structure 202. When the tracheal head 2 is rotated into place, the magnetic device 3 generates a magnetic force on the side of the second limiting structure 202 to prevent the tracheal head 2 from rotating in the opposite direction and leaving the stop bar 1032.

[0107] In one embodiment, the area of the magnetic attraction region generated by the magnetic attraction device 3 is larger than the end surface area of the connecting member 4 .

[0108] In this embodiment, since the various preparations before measuring blood pressure may cause the second limiting structure 202 to slightly move away from the rotated position, the magnetic area generated by the magnetic device 3 is made larger than the end area of the connecting piece 4. When the second limiting structure 202 slightly moves away from the rotated position, the connecting piece 4 can still be effectively attracted by powering the magnetic device 3.

[0109] In one embodiment, at least two second limiting structures 202 are provided, and correspondingly, at least two stopping structures 103 are provided and are rotationally symmetrical.

[0110] In this embodiment, by providing at least two second limiting structures 202 and at least two stop structures 103 that are rotationally symmetrical, the force on the tracheal head 2 can be made more balanced.

[0111] It should be noted that the rotational symmetry of the at least two stop structures 103 refers to rotational symmetry about the central axis of the limiting socket 101 .

[0112] In one embodiment, two second limiting structures 202 are symmetrically provided, and correspondingly, two stopping structures 103 are provided.

[0113] In this embodiment, by symmetrically providing two second limiting structures 202 and providing two stop structures 103 that are rotationally symmetrical about the central axis of the limiting socket 101, the force on the tracheal head 2 can be made more balanced and the structure can be made simpler. Specifically, when it is necessary to measure blood pressure, the tracheal plug 201 is first inserted into the limiting socket 101 so that the two second limiting structures 202 respectively abut against the first abutting surface 102. Then, the tracheal head 2 is rotated, and the tracheal plug 201 and the two second limiting structures 202 rotate accordingly, so that one of the second limiting structures 202 is screwed into the gap between the stop bar 1032 and the first abutting surface 102 from one of the stop bars 1032 away from the stop block 1031, and the other second limiting structure 202 is screwed into the gap between the stop bar 1032 and the first abutting surface 102 from the other stop bar 1031. 32 is screwed into the gap between the stop strip 1032 and the first abutting surface 102 at one end away from the stop block 1031. After being rotated into place, the magnetic device 3 is energized, and the magnetic force generated by the magnetic device 3 acts on the connector 4 to prevent the tracheal head 2 from rotating in the opposite direction and leaving the stop strip 1032. At the same time, the stop strip 1032 blocks the second limiting structure 202, so that the tracheal head 2 can be firmly fixed in the limiting socket 101. During the blood pressure measurement, the tracheal head 2 will not fall off from the limiting socket 101, which is convenient for users to measure blood pressure.

[0114] Of course, in an embodiment not shown in the figures, only one second limiting structure 202 may be provided, and only one stopping structure 103 may also be provided.

[0115] In one embodiment, when the tracheal plug 201 is inserted into the limiting plug hole 101 , each second limiting structure 202 abuts against a first stop surface 10311 .

[0116] In this embodiment, the first stop surface 10311 can prevent the tracheal head 2 from rotating in the first direction. Therefore, after the tracheal plug 201 is inserted into the limiting hole, the tracheal head 2 can only rotate in a second direction opposite to the first direction, which can prevent the user from rotating the tracheal head 2 in the wrong direction. The second stop surface 10312 can prevent the tracheal head 2 from continuing to rotate in the second direction, which can prevent the tracheal head 2 from continuing to rotate after it has been rotated into place.

[0117] In one embodiment, the stop strip 1032 has an arc-shaped contact edge 10321 suitable for contacting the outer circumferential surface of the tracheal head 2.

[0118] In this embodiment, since the contact edge 10321 of the stop strip 1032 can maintain contact with the outer peripheral surface of the tracheal head 2, the two stop strips 1032 cooperate to limit the rotation of the tracheal head 2 to prevent the tracheal head 2 from shaking.

[0119] Specific as Figure 7 As shown, the stop bar 1032 is in an arc shape as a whole, and its inner side is a contact edge 10321.

[0120] In one embodiment, the side wall of the main unit is recessed to form a limiting groove, the first abutting surface 102 constitutes the bottom wall of the limiting groove, and a gap 104 is defined between the stop bar and the side wall of the limiting groove.

[0121] In this embodiment, by providing a gap 104 between the stop bar 1032 and the side wall of the limiting groove, it is possible to observe through the gap 104 whether the second limiting structure 202 is rotated into place.

[0122] Specifically, the radial size of the second limiting structure 202 in the tracheal head 2 is larger than the radial size of the stop strip 1032 in the limiting socket 101, and the second limiting structure 202 can be seen through the gap 104. Therefore, it can be observed through the gap 104 between the stop strip and the side wall of the limiting groove whether the second limiting structure 202 is rotated into place.

[0123] Combine Figure 6 and Figure 7 The second limiting structure 202 has a radial dimension L1 on the tracheal head 2, and a radial dimension L2 on the stop bar 1032 on the limiting hole 101, where L1 is greater than L2. It should be noted that the radial dimension of the stop bar 1032 on the limiting hole 101 is the width of the stop bar 1032.

[0124] In one embodiment, the tracheal plug 201 has an insertion end 2011 suitable for inserting into the limiting plug hole 101 , and the outer diameter of the tracheal plug 201 gradually increases from the insertion end 2011 toward a direction away from the insertion end 2011 .

[0125] In this embodiment, the outer diameter of the tracheal plug 201 gradually increases from the insertion end 2011 to the direction away from the insertion end 2011, which can guide the installation of the tracheal plug 201 and facilitate the smooth insertion of the tracheal plug 201 into the limiting socket 101.

[0126] In one embodiment, a sealing ring 5 is provided in the limiting insertion hole 101 , and the outer diameter of the insertion end 2011 is larger than the inner diameter of the sealing ring 5 .

[0127] In this embodiment, by making the outer diameter of the insertion end 2011 larger than the inner diameter of the sealing ring 5, when the tracheal plug 201 is installed in place, the sealing ring 5 is squeezed and deformed, thereby ensuring sealing.

[0128] In one embodiment, the tracheal head 2 is provided with a friction portion 203 suitable for gripping.

[0129] In this embodiment, the friction portion 203 is provided to facilitate the user to hold and rotate the tracheal head 2 .

[0130] Specifically, the friction portion 203 may be a plurality of convex strips, a plurality of convex points, or a plurality of grooves.

[0131] According to an embodiment of the present invention, in a second aspect, a control method for a measuring instrument is further provided, which is applied to the above-mentioned measuring instrument. The control method includes:

[0132] Determine whether the measuring instrument has started measuring;

[0133] If so, the magnetic device 3 is energized.

[0134] In this embodiment, before the measuring instrument begins measuring, the magnetic device 3 is not powered. During this process, the user can complete pre-measurement preparations. The magnetic device 3 is powered only when the measuring instrument begins measuring, so that the tracheal tip 2 can be firmly fixed in the limiting socket 101. During the blood pressure measurement process, the tracheal tip 2 will not fall out of the limiting socket 101, making it easier for the user to measure blood pressure. When the measuring instrument is not measuring blood pressure, the magnetic device 3 is not powered, which is more suitable for the user's usage scenario, does not cause the magnetic weakening phenomenon of traditional magnets, and increases the stability of the magnetic attraction.

[0135] In one embodiment, the control method further includes:

[0136] After the measurement is completed, the power-on time of the magnetic attraction device 3 is adjusted or the power is turned off according to the test result.

[0137] In this embodiment, after the measurement is completed, the power-on time of the magnetic attraction device 3 is adjusted or the power is cut off according to the test results. This can be applied to various scenarios and is more convenient for users.

[0138] Specifically in one embodiment, Figure 11 As shown, adjusting the power-on time of the magnetic attraction device 3 or powering off the magnetic attraction device 3 according to the test results includes:

[0139] If the measurement result is displayed normally, the magnetic device 3 is kept powered on for the first preset time;

[0140] If the first error message is prompted, the magnetic device 3 remains powered on for the second preset time period;

[0141] If the second error message is prompted, the magnetic device 3 remains powered on for a third preset time period;

[0142] If the third error message is prompted, the power to the magnetic device 3 is cut off.

[0143] In this embodiment, after the measurement is completed, if the measurement result is displayed normally, the magnetic device 3 will remain powered on for the first preset time, during which the user can view the blood pressure measurement value. If the first error message is prompted, the magnetic device 3 will remain powered on for the second preset time, waiting for re-measurement. If the second error message is prompted, the magnetic device 3 will remain powered on for the third preset time. If the third error message is prompted, the magnetic device 3 will be powered off. In this embodiment, the magnetic device 3 retains corresponding power-on times for a variety of different working conditions. During the period when the error message allows the user to adjust, the power-on retention time of the magnetic device 3 is intelligently adjusted according to the user's situation, and the tracheal head 2 is firmly fixed in the limiting socket 101 to ensure airtightness and measurement accuracy.

[0144] Specifically in one embodiment, the first error message can be an error message related to the heart rate, such as directly displaying that the heartbeat is too fast or displaying a related code number. If the first error message is prompted, the magnetic device 3 will remain powered on for a second preset time, allowing the user to adjust his mentality and wait for re-measurement.

[0145] The second error message may be that the cuff is not fastened, and the cuff may be directly displayed as not fastened or a related code number may be displayed. If the second error message is prompted, the magnetic device 3 is kept powered on for a third preset time, allowing the user to adjust the cuff and fasten it again.

[0146] The third error message may be that the cuff is leaking, which may be a direct display of cuff leakage or a display of a related code number. If the third error message is prompted, the magnetic device 3 is powered off to allow the user to replace the cuff or re-insert the tracheal head 2.

[0147] Specifically in one embodiment, the first preset time length is 3 seconds, the second preset time length is 15 seconds, and the third preset time length is 5 seconds.

[0148] In one embodiment, after the magnetic device 3 is powered on for a first preset time, and / or the magnetic device 3 is powered on for a second preset time, and / or the magnetic device 3 is powered on for a third preset time, the method further includes:

[0149] Determine whether to re-measure;

[0150] If yes, it is determined whether the measuring instrument starts measuring, and if not, the magnetic attraction device 3 is powered off.

[0151] In this embodiment, after the user completes the measurement, whether the measurement result is displayed normally or an error is prompted, after retaining the corresponding preset time for the magnetic device 3, it is determined whether to re-measure. If so, the above steps of determining whether the measuring instrument has started measuring are repeated. If no re-measurement is required, the magnetic device 3 is powered off, and the magnetic weakening phenomenon of traditional magnetism will not occur, thereby increasing the stability of the magnetic attraction.

[0152] In one embodiment, adjusting the power-on time of the magnetic attraction device 3 or powering off the magnetic attraction device 3 according to the test results further includes:

[0153] If it is detected that the user presses the "stop" button, the power to the magnetic attraction device 3 is cut off.

[0154] In this embodiment, when the user presses the "stop" button, the power to the magnetic device 3 is cut off, which is more in line with the usage scenario.

[0155] Specifically in one embodiment, when the user needs to measure blood pressure, the user first inserts the tracheal plug 201 into the limiting socket 101, so that the two second limiting structures 202 respectively abut against the first abutting surface 102, and then rotates the tracheal head 2, and the tracheal plug 201 and the two second limiting structures 202 rotate accordingly, so that one of the second limiting structures 202 is screwed into the gap between the stop bar 1032 and the first abutting surface 102 from the end of one of the stop bars 1032 away from the stop block 1031 and the first abutting surface 102, and the other second limiting structure 202 is screwed into the gap between the stop bar 1032 and the first abutting surface 102 from the end of the other stop bar 1032 away from the stop block 1031 and the first abutting surface 102, and rotated into place. Before the measuring instrument begins measuring, the magnetic device 3 is powered off. During this time, the user can complete pre-measurement preparations. The magnetic device 3 is powered on only when the measuring instrument begins measuring, ensuring that the tracheal tip 2 is securely fixed in the retaining hole 101 and preventing it from falling out of the retaining hole 101 during the blood pressure measurement. After the measurement is completed, if the measurement result is displayed normally, the magnetic device 3 remains powered on for the first preset duration, allowing the user to view the blood pressure measurement. If a "heartbeat too fast" message appears, the magnetic device 3 remains powered on for the second preset duration, allowing the user to adjust their mindset and wait for a new measurement. If a "cuff not tightened" message appears, the magnetic device 3 remains powered on for the third preset duration, allowing the user to adjust and re-tighten the cuff. If a "cuff leaking" message appears, the magnetic device 3 is powered off, allowing the user to replace the cuff or re-insert the tracheal tip 2. A determination is then made as to whether to re-measure. If so, the measuring instrument determines whether to begin measuring. If not, the magnetic device 3 is powered off.

[0156] In an alternative embodiment, Figure 12 As shown, the control method further includes:

[0157] After the measurement is completed, the magnetic device 3 remains powered on for a fourth preset time period;

[0158] Determine whether to re-measure;

[0159] If yes, it is determined whether the measuring instrument starts measuring, and if not, the magnetic attraction device 3 is powered off.

[0160] In this embodiment, after the measurement is completed, the magnetic device 3 remains powered on for a fourth preset period of time. During this period, the user can view the blood pressure measurement value. If the user does not want to re-measure, the cuff on the arm can be removed, the magnetic device 3 is powered off, and the tracheal head 2 is pulled out. If re-measurement is required, the magnetic device 3 will not be powered off during the user's adjustment process to prevent the tracheal head 2 from loosening, thereby ensuring airtightness and measurement accuracy.

[0161] In one embodiment, the fourth preset duration is an average of user feedback and adjustment time, and may be 3s-5s. During the entire blood pressure measurement process, the power on and off of the magnetic device 3 can be precisely controlled, achieving intelligent connection and energy saving by powering off under operating conditions other than measurement. This prevents weakening of the transmission magnet and increases magnetic attraction stability.

[0162] According to an embodiment of the present invention, in a third aspect, a control device for a measuring instrument is further provided, which is applied to the above-mentioned measuring instrument. The control device includes:

[0163] A first judgment module is used to judge whether the measuring instrument has started measuring;

[0164] The first execution module is used to power on the magnetic attraction device 3 when the measuring instrument starts measuring.

[0165] In this embodiment, before the measuring instrument begins measuring, the magnetic device 3 is not powered. During this process, the user can complete pre-measurement preparations. The magnetic device 3 is powered only when the measuring instrument begins measuring, allowing the tracheal tip 2 to be securely fixed in the limiting socket 101. During blood pressure measurement, the tracheal tip 2 will not fall out of the limiting socket 101, facilitating blood pressure measurement for the user. When the measuring instrument is not measuring blood pressure, the magnetic device 3 is not powered, which is more suitable for user usage scenarios, avoids the magnetic weakening phenomenon of traditional magnets, and increases the stability of the magnetic attraction.

[0166] In one embodiment, the control device further comprises:

[0167] The second execution module is used to adjust the power-on time of the magnetic attraction device 3 or cut off the power to the magnetic attraction device 3 according to the test result after the measurement is completed.

[0168] In this embodiment, after the measurement is completed, the power-on time of the magnetic attraction device 3 is adjusted or the power is cut off according to the test results. This can be applied to various scenarios and is more convenient for users.

[0169] Specifically in one embodiment, the second execution module includes:

[0170] A first execution submodule, configured to keep the magnetic device 3 powered on for a first preset time period when the measurement result is displayed normally;

[0171] The second execution submodule is configured to keep the magnetic device 3 powered on for a second preset time period when the first error message is prompted;

[0172] The third execution submodule is configured to keep the magnetic device 3 powered on for a third preset time period when the second error message is prompted;

[0173] The fourth execution submodule is used to cut off the power supply to the magnetic attraction device 3 when the third error message is prompted.

[0174] In this embodiment, after the measurement is completed, if the measurement result is displayed normally, the magnetic device 3 remains powered on for the first preset time, during which the user can view the blood pressure measurement value. If the first error message is prompted, the magnetic device 3 remains powered on for the second preset time. If the second error message is prompted, the magnetic device 3 remains powered on for the third preset time. If the third error message is prompted, the magnetic device 3 is powered off. In this embodiment, the magnetic device 3 retains corresponding power-on times for a variety of different working conditions. During the period when the error message allows the user to adjust, the power-on retention time of the magnetic device 3 is intelligently adjusted according to the user's situation, and the tracheal head 2 is firmly fixed in the limiting socket 101 to ensure airtightness and measurement accuracy.

[0175] Specifically in one embodiment, the first error message can be an error message related to the heart rate, such as directly displaying that the heartbeat is too fast or displaying a related code number. If the first error message is prompted, the magnetic device 3 will remain powered on for a second preset time, allowing the user to adjust his mentality and wait for re-measurement.

[0176] The second error message may be that the cuff is not fastened, and the cuff may be directly displayed as not fastened or a related code number may be displayed. If the second error message is prompted, the magnetic device 3 is kept powered on for a third preset time, allowing the user to adjust the cuff and fasten it again.

[0177] The third error message may be that the cuff is leaking, which may be a direct display of cuff leakage or a display of a related code number. If the third error message is prompted, the magnetic device 3 is powered off to allow the user to replace the cuff or re-insert the tracheal head 2.

[0178] Specifically in one embodiment, the first preset time length is 3 seconds, the second preset time length is 15 seconds, and the third preset time length is 5 seconds.

[0179] In one embodiment, the control device further comprises:

[0180] a second judgment module, configured to judge whether to re-measure after the magnetic device 3 remains powered on for a first preset time, and / or the magnetic device 3 remains powered on for a second preset time, and / or the magnetic device 3 remains powered on for a third preset time;

[0181] a third execution module, configured to enable the first judgment module to operate during re-measurement;

[0182] The fourth execution module is used to cut off the power supply of the magnetic attraction device 3 when no re-measurement is required.

[0183] In this embodiment, after the user completes the measurement, whether the measurement result is displayed normally or an error is prompted, after retaining the corresponding preset time for the magnetic device 3, it is determined whether to re-measure. If so, the above steps of determining whether the measuring instrument has started measuring are repeated. If no re-measurement is required, the magnetic device 3 is powered off, and the magnetic weakening phenomenon of traditional magnetism will not occur, thereby increasing the stability of the magnetic attraction.

[0184] In one embodiment, the second execution module further includes:

[0185] The fifth execution submodule is used to cut off the power supply to the magnetic attraction device 3 when it is detected that the user presses the "stop" button.

[0186] In this embodiment, when the user presses the "stop" button, the power to the magnetic device 3 is cut off, which is more in line with the usage scenario.

[0187] In an alternative embodiment, the control device further comprises:

[0188] A fifth execution module, configured to keep the magnetic device 3 powered on for a fourth preset time period after the measurement is completed;

[0189] The third judgment module is used to judge whether to re-measure;

[0190] a sixth execution module, configured to enable the first judgment module to operate during re-measurement;

[0191] The seventh execution module is used to cut off the power supply of the magnetic attraction device 3 when no re-measurement is required.

[0192] In this embodiment, after the measurement is completed, the magnetic device 3 remains powered on for a fourth preset period of time. During this period, the user can view the blood pressure measurement value. If the user does not want to re-measure, the cuff on the arm can be removed, the magnetic device 3 is powered off, and the tracheal head 2 is pulled out. If re-measurement is required, the magnetic device 3 will not be powered off during the user's adjustment process to prevent the tracheal head 2 from loosening, thereby ensuring airtightness and measurement accuracy.

[0193] In one embodiment, the fourth preset duration is an average of user feedback and adjustment time, and may be 3s-5s. During the entire blood pressure measurement process, the power on and off of the magnetic device 3 can be precisely controlled, achieving intelligent connection and energy saving by powering off under operating conditions other than measurement. This prevents weakening of the transmission magnet and increases magnetic attraction stability.

[0194] It should be noted that, as used above, the term "module" may be a combination of software and / or hardware that implements a predetermined function. Although the apparatus described in the above embodiments is preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.

[0195] The control device in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0196] According to an embodiment of the present invention, in a fourth aspect, a computer-readable storage medium is further provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the above-mentioned control device.

[0197] Among them, the storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory (Flash Memory), a hard disk drive (HDD) or a solid-state drive (SSD), etc.; the storage medium can also include a combination of the above types of memory.

[0198] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A measuring instrument, characterized in that: include: The host has a first limiting structure (1), wherein the first limiting structure (1) includes a limiting socket (101); A tracheal head (2) comprising a tracheal plug (201) adapted to be inserted into the limiting plug hole (101) and sealed therewith; a magnetic attraction device (3), arranged on one of the first limiting structure (1) and the tracheal head (2), wherein the magnetic attraction device (3) is adapted to generate a magnetic attraction force when powered; A connecting piece (4) made of a magnetic material is provided on the other of the first limiting structure (1) and the tracheal head (2); after the tracheal plug (201) is inserted into the limiting jack (101) and installed in place, the magnetic attraction force of the magnetic attraction device (3) is suitable for acting on the connecting piece (4); The magnetic attraction device (3) is arranged on the first limiting structure (1), and the connecting member (4) is arranged on the tracheal head (2); The first limiting structure (1) further comprises a first abutting surface (102), the limiting plug hole (101) and the magnetic attraction device (3) are arranged on the first abutting surface (102), the tracheal head (2) further comprises a second limiting structure (202) located outside the tracheal plug (201), when the tracheal plug (201) is inserted into the limiting plug hole (101), the second limiting structure (202) abuts against the first abutting surface (102), and the connecting member (4) is arranged on the second limiting structure (202); The first limiting structure (1) further comprises a stop structure (103), the stop structure (103) comprising a stop block (1031) and a stop strip (1032) extending from the stop block (1031), a gap being present between the stop strip (1032) and the first abutting surface (102) in a direction perpendicular to the first abutting surface (102), and the magnetic attraction device (3) being close to the stop block (1031) and opposite to the stop strip (1032); The second limiting structure (202) is suitable for being screwed into between the stop strip (1032) and the first abutting surface (102) from the gap between one end of the stop strip (1032) away from the stop block (1031) and the first abutting surface (102).

2. The measuring instrument according to claim 1, characterized in that The stop block (1031) has a first stop surface (10311) and a second stop surface (10312), wherein the first stop surface (10311) is used to prevent the tracheal head (2) from rotating in a first direction, and after the tracheal head (2) rotates in a second direction opposite to the first direction, the second limiting structure (202) abuts against the second stop surface (10312), and the second stop surface (10312) is used to prevent the tracheal head (2) from continuing to rotate in the second direction.

3. The measuring instrument according to claim 1, characterized in that The first abutting surface (102) is provided with a first limiting groove, the magnetic attraction device (3) is provided in the first limiting groove, and the end of the magnetic attraction device (3) is flush with the first abutting surface (102); The second limiting structure (202) has a second abutting surface (2021) suitable for abutting against the first abutting surface (102), the second limiting structure (202) is provided with a second limiting groove, the connecting member (4) is arranged in the second limiting groove and its end is flush with the second abutting surface (2021).

4. The measuring instrument according to claim 1, characterized in that The magnetic attraction region generated by the magnetic attraction device (3) is larger than the end surface area of the connecting member (4).

5. The measuring instrument according to claim 2, characterized in that At least two of the second limiting structures (202) are provided, and correspondingly, at least two of the stopping structures (103) are provided and are rotationally symmetrical.

6. The measuring instrument according to claim 5, characterized in that The second limiting structures (202) are symmetrically provided with two, and correspondingly, the stopping structures (103) are provided with two.

7. The measuring instrument according to claim 6, characterized in that When the tracheal plug (201) is inserted into the limiting plug hole (101), each of the second limiting structures (202) abuts against one of the first stop surfaces (10311).

8. The measuring instrument according to claim 1, wherein The stop strip (1032) has an arc-shaped contact edge (10321) suitable for contacting the outer peripheral surface of the tracheal head (2).

9. The measuring instrument according to any one of claims 1, 2, 5-8, characterized in that: The side wall of the main unit is recessed to form a limiting groove, the first abutting surface (102) constitutes the bottom wall of the limiting groove, a gap (104) is provided between the stop strip (1032) and the side wall of the limiting groove, and the radial dimension of the second limiting structure (202) in the tracheal head (2) is greater than the radial dimension of the stop strip (1032) in the limiting socket (101).

10. The measuring instrument according to any one of claims 1 to 8, characterized in that The tracheal plug (201) has an insertion end (2011) suitable for being inserted into the limiting plug hole (101), and the outer diameter of the tracheal plug (201) gradually increases from the insertion end (2011) in a direction away from the insertion end (2011).

11. The measuring instrument according to any one of claims 1 to 8, characterized in that The tracheal head (2) is provided with a friction portion (203) suitable for gripping.

12. A method for controlling a measuring instrument, characterized in that: Applied to the measuring instrument according to any one of claims 1 to 11, the control method comprises: Determine whether the measuring instrument has started measuring; If so, the magnetic attraction device (3) is energized.

13. The control method of the measuring instrument according to claim 12, characterized in that: The control method further includes: After the measurement is completed, the duration of powering on the magnetic attraction device (3) is adjusted or the power to the magnetic attraction device (3) is turned off according to the test results.

14. The control method of the measuring instrument according to claim 13, characterized in that: The adjusting of the duration of powering on the magnetic attraction device (3) or powering off the magnetic attraction device (3) according to the test results comprises: If the measurement result is displayed normally, the magnetic device (3) is kept powered on for a first preset time period; If the first error message is prompted, the magnetic device (3) remains powered on for a second preset time period; If the second error message is prompted, the magnetic device (3) is kept powered on for a third preset time period; If the third error message is prompted, the power to the magnetic attraction device (3) is cut off.

15. The control method of the measuring instrument according to claim 14, characterized in that: After the magnetic device (3) is powered on for a first preset time, and / or the magnetic device (3) is powered on for a second preset time, and / or the magnetic device (3) is powered on for a third preset time, the method further comprises: Determine whether to re-measure; If yes, it is determined whether the measuring instrument starts measuring, and if no, the magnetic attraction device (3) is powered off.

16. The control method of the measuring instrument according to claim 14, characterized in that: The method of adjusting the duration of power on of the magnetic attraction device (3) or power off of the magnetic attraction device (3) according to the test results further includes: If it is detected that the user presses the "stop" button, the power to the magnetic attraction device (3) is cut off.

17. The control method of the measuring instrument according to claim 12, characterized in that: The control method further includes: After the measurement is completed, the magnetic attraction device (3) remains powered on for a fourth preset time period; Determine whether to re-measure; If yes, it is determined whether the measuring instrument starts measuring, and if no, the magnetic attraction device (3) is powered off.

18. A control device for a measuring instrument, characterized in that: The measuring instrument according to any one of claims 1 to 11, wherein the control device comprises: A first judgment module is used to judge whether the measuring instrument has started measuring; The first execution module is used to power on the magnetic attraction device (3) when the measuring instrument starts measuring.

Images