CN113739683A - Zero calibration device, striker with zero calibration device, zero calibration method and striking method - Google Patents
Zero calibration device, striker with zero calibration device, zero calibration method and striking method Download PDFInfo
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- CN113739683A CN113739683A CN202111310674.8A CN202111310674A CN113739683A CN 113739683 A CN113739683 A CN 113739683A CN 202111310674 A CN202111310674 A CN 202111310674A CN 113739683 A CN113739683 A CN 113739683A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
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Abstract
本发明提供一种校零装置，包括：支架；通过旋转轴与支架连接的杠杆；设置于杠杆的第二端的触头；设置于杠杆的第一端的第一导体；以及固定于支架、与支架绝缘的第二导体；支架和第二导体分别与电源连接，当触头到达打击位置受力时，第一导体和第二导体断开连接。本发明在支架上设置杠杆，杠杆的一端设置用于接触打击位置的触头，杠杆的另一端设置与触头形成杠杆平衡的第一导体，第一导体与支架上的第二导体接触，构成支架、杠杆、第一导体、第二导体和电源的电回路，当触头到达打击位置受力时，通过电路通断和杠杆力学相结合的方式定位打击位置，避免了打击位置覆盖有组织液时校零不准的问题，保证建立动物损伤模型的准确性。
The invention provides a zero calibration device, comprising: a bracket; a lever connected with the bracket through a rotating shaft; a contact arranged at the second end of the lever; a first conductor arranged at the first end of the lever; The second conductor insulated by the bracket; the bracket and the second conductor are respectively connected with the power supply, and when the contact reaches the striking position and is stressed, the first conductor and the second conductor are disconnected. In the present invention, a lever is arranged on the bracket, one end of the lever is arranged with a contact for contacting the striking position, the other end of the lever is arranged with a first conductor that forms a lever balance with the contact, and the first conductor is in contact with the second conductor on the bracket. The electrical circuit of the bracket, lever, first conductor, second conductor and power supply, when the contact reaches the striking position and is stressed, the striking position is positioned by the combination of circuit on-off and lever mechanics, avoiding the situation when the striking position is covered with tissue fluid The problem of inaccurate calibration ensures the accuracy of establishing animal injury models.
Description
Technical Field
The invention relates to the technical field of scientific research experimental equipment, in particular to a zero calibration device, a striking device with the zero calibration device, a zero calibration method and a striking method.
Background
Traumatic brain injury and spinal cord injury are the most common diseases in neurosurgery and are the main causes of disability and death in trauma patients. The change of motor, sensory and autonomic nerve functions of trauma patients after traumatic brain injury and spinal cord injury is researched, the specific mechanism of various dysfunctions caused by the nervous system injury of the trauma patients is researched, the protection and treatment of the traumatic brain injury and the spinal cord injury are facilitated, and the survival rate and the survival quality of the trauma patients are facilitated to be improved. The method is characterized in that various animal injury models which are convenient for observing and applying intervention factors, have the advantages of grading, good controllability and good reproducibility and accord with the characteristics of human traumatic brain injury and spinal cord injury are established, and the method is a research hotspot of traumatic brain injury and spinal cord injury. At present, the mainstream equipment for establishing an animal injury model is a precision impactor, so that a low-speed craniocerebral injury model can be realized, and a spinal cord injury model can also be realized. When the precise impactor is used for establishing a low-speed craniocerebral injury model or a spinal cord injury model, the positioning accuracy of the precise impactor is particularly critical.
The device for ensuring the positioning accuracy is a zero calibration device, which can also be called a percussion instrument zero calibration device. The zero calibration technology in the prior art mainly comprises a laser ranging technology. The zero calibration device adopting the laser ranging technology judges the distance from the striking head to the striking position through the reflection of light, but is limited in that the striking position is probabilistically covered with tissue fluid to influence the judgment, so that the zero calibration is inaccurate.
Disclosure of Invention
The embodiment of the invention provides a zero calibration device, aiming at solving the problem of inaccurate zero calibration when a striking position is covered with tissue fluid in the prior art.
In a first aspect, a zero calibration apparatus is provided, including:
a support (1);
a lever (2) connected to the bracket through a rotation shaft;
a contact (3) arranged at the second end of the lever (2);
a first conductor (4) disposed at a first end of the lever (2); and
a second conductor (5) fixed to the support (1) and insulated from the support (1);
the bracket (1) and the second conductor (5) are respectively connected with a power supply, and when the contact (3) reaches a striking position and is stressed, the first conductor (4) and the second conductor (5) are disconnected.
In a second aspect, there is provided a striker comprising a power source, a striker body and a zero calibration device as described above; the beater body is connected with a power supply, and the zero calibration device is arranged on the beater body.
In a third aspect, a zero calibration method is provided for performing zero calibration by a percussion device as described above.
In a fourth aspect, there is provided a striking method including:
obtaining a striking position by the zeroing method as described above;
after the zero calibration device is taken down, the distance between the striking head and the contact (3) is compensated;
and striking the striking position by the striking head according to the striking parameters.
According to the embodiment of the invention, the lever is arranged on the bracket, one end of the lever is provided with the contact used for contacting the striking position, the other end of the lever is provided with the first conductor forming lever balance with the contact, the first conductor is contacted with the second conductor on the bracket to form an electric loop of the bracket, the lever, the first conductor, the second conductor and the power supply, when the contact reaches the striking position and is stressed, the lever balance is damaged, the first conductor is disconnected with the second conductor, the striking position is positioned in a mode of combining circuit on-off and lever mechanics, the problem of inaccurate zero calibration when the striking position is covered with tissue fluid is avoided, and the accuracy of establishing an animal injury model is ensured.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of a striker;
FIG. 2 is a schematic view of the striking position covered with interstitial fluid;
fig. 3 is an exploded view of a zero calibration device provided in an adaptor of a striking head according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along section line A1A2 in FIG. 3;
FIG. 5 is a schematic diagram of an electrical circuit provided in accordance with an embodiment of the present invention;
fig. 6 is a front view of a PCB board according to a first embodiment of the present invention;
FIG. 7 is a cross-sectional view taken along section line B1B2 in FIG. 6;
FIG. 8 is a flowchart of a zeroing method according to a third embodiment of the present invention;
fig. 9 is a flowchart of a striking method according to a fourth embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar modules or modules having the same or similar functionality throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Fig. 1 is a schematic view of a percussion device, and a zero calibration device is arranged on a percussion device body. When an animal injury model is established, an experimental animal (not shown in the figure) is fixed below the zero calibration device, and the zero calibration device moves downwards to position the striking position. And after the striking position is positioned, recording the striking position, and finishing zero calibration. The zero calibration device is taken down, and the striking head (not shown in the figure) is controlled to strike the striking position according to the striking parameters. Fig. 2 is a schematic view of the striking position covered with interstitial fluid. If the actual striking position is covered with the tissue fluid, the zero calibration device in the prior art stops zero calibration when being positioned at the position of the tissue fluid, and the position of the tissue fluid is taken as the striking position, so that the animal injury model established by striking is inaccurate.
According to the embodiment of the invention, the lever is arranged on the bracket, one end of the lever is provided with the contact used for contacting the striking position, the other end of the lever is provided with the first conductor forming lever balance with the contact, the first conductor is contacted with the second conductor on the bracket to form an electric loop of the bracket, the lever, the first conductor, the second conductor and the power supply, when the contact reaches the striking position and is stressed, the lever balance is damaged, the first conductor is disconnected with the second conductor, the striking position is positioned in a mode of combining circuit on-off and lever mechanics, the problem of inaccurate zero calibration when the striking position is covered with tissue fluid is avoided, and the accuracy of establishing an animal injury model is ensured.
Example one
Fig. 3 is an exploded view of a zero calibration device provided in an adaptor of a striking head according to an embodiment of the present invention. Fig. 4 is a cross-sectional view of fig. 3 taken along section line A1a 2. As shown in fig. 3 and 4, the zero calibration device includes a holder 1, a lever 2, a contact 3, a first conductor 4, a second conductor 5, and an insulating plate 7. The bracket 1 plays a supporting role for other parts of the zero calibration device. When the zero calibration is finished, the zero calibration device can be locked on the striking head adapter through the bracket 1. The lever 2 is connected to the bracket 1 through a rotation shaft. The bracket 1 and the lever 2 are both conductors. Weights are placed at both ends of the lever 2. A first conductor 4 is arranged at a first end of the lever 2, and a contact 3 is arranged at a second end of the lever 2, so that lever balance is formed. Optionally, the distance of the first conductor 4 to the rotation axis or the gravity of the first conductor 4 is adjustable, so that the moment on the side of the first conductor 4 is adjustable; the distance of contact 3 from the axis of rotation or the weight of contact 3 is adjustable so that the moment on one side of contact 3 is adjustable. The zero calibration contact 3 is used to contact the striking position. The second conductor 5 is fixed to the bracket 1 opposite to the first conductor 4. An insulating plate 7 is arranged between the holder 1 and the second conductor 5. The holder 1 and the second conductor 5 are each connected to a power supply (not shown in the figure). When the contact 3 is not in contact with the striking position and the lever 2 is in a lever balance state, the first conductor 4 and the second conductor 5 are in contact to form an electric loop of the bracket 1, the lever 2, the first conductor 4, the second conductor 5 and a power supply, as shown in fig. 5; when the contact 3 reaches the striking position and is stressed, the original lever balance is broken, the first conductor 4 and the second conductor 5 are disconnected, the electric circuit is disconnected, and the striking position is positioned.
In the embodiment of the present invention, as shown in fig. 4, the lever 2 is L-shaped, and the vertical portion thereof is a first end and the horizontal portion thereof is a second end. A contact 3 is provided at the second end of the lever 2, the weight of the contact 3 causing the lever 2 to rotate in a clockwise direction. The first conductor 4 comprises a copper screw 41 and a weight 42 arranged on the copper screw 41, the copper screw 41 and the weight 42 are arranged at the first end of the lever 2, and the lever 2 is rotated in the counterclockwise direction by the gravity of the copper screw 41, the gravity of the weight 42 and the position of the weight 42 on the copper screw 41. The moment on the first conductor 4 side can be adjusted by adjusting the weight of the weight 42 and the position of the weight 42 on the copper screw 41. The second conductor 5 comprises a copper block 51 opposite the copper screw 41. When the contact 3 is not contacted with the striking position and the lever 2 is in a lever balance state, the copper screw rod 41 is contacted with the copper block 51 to form an electric loop of the bracket 1, the lever 2, the copper screw rod 41, the copper block 51 and a power supply; when the contact 3 reaches the striking position and is stressed, the striking pressure enables the lever 2 to rotate in the anticlockwise direction, the original lever balance is broken, the copper screw rod 41 is disconnected with the copper block 51, the electric circuit is disconnected, and the striking position is positioned.
In order to adjust the moment on the side of the contact 3, if the contact 3 with different gravity is frequently replaced or the distance from the contact 3 to the rotating shaft is adjusted, the operation is not convenient enough. As an embodiment of the present invention, the zero calibration device further includes an iron jackscrew 8 disposed at the first end of the lever 2 and a magnet 9 disposed at the bracket 1. An iron jack 8 is housed entirely within the first end of the lever 2, opposite the magnet 9. The attraction of the magnet 9 to the iron jack 8 causes the lever 2 to rotate in a clockwise direction. The distance between the iron jack 8 and the magnet 9, that is, the attractive force between the iron jack 8 and the magnet 9 is adjusted, thereby adjusting the moment on the side of the contact 3. And the iron jackscrew 8 is completely accommodated in the first end of the lever 2, and the influence of gravity on the counterclockwise rotation of the lever 2 is small. When the contact 3 is not in contact with the striking position, the distance between the iron jackscrew 8 and the magnet 9 and the position of the weight 42 on the copper screw 41 are respectively adjusted, so that the lever 2 can quickly reach a lever balance state.
In order to make the zero calibration more accurate, in the embodiment of the present invention, when the contact 3 does not contact the striking position, the moment on the side where the contact 3 is provided is slightly larger than the moment on the side where the first conductor 4 is provided, and the first conductor 4 is still in contact with the second conductor 5. When the contact 3 reaches the striking position and is stressed and the striking pressure reaches a preset value, if the striking pressure is set to be 0.6-0.9 g, the striking pressure enables the lever 2 to rotate in the anticlockwise direction, the first conductor 4 and the second conductor 5 are disconnected, the electric circuit is disconnected, and the fact that the striking position is located is indicated.
In the embodiment of the present invention, the zero calibration device further includes a PCB 6 fixed on the bracket 1, and the second conductor 5 is disposed on the PCB 6. Fig. 6 is a front view of a PCB board according to an embodiment of the present invention. Fig. 7 is a cross-sectional view taken along section line B1B2 in fig. 6. As shown in fig. 6 and 7, the PCB 6 includes a quick connector 61, and the second conductor 5 is connected to the quick connector 61 through a trace on the PCB and then connected to a power supply through the quick connector 61. The trace portion between the second conductor 5 and the quick connector 61 is covered with a cover plate.
According to the embodiment of the invention, the lever is arranged on the bracket, one end of the lever is provided with the contact used for contacting the striking position, the other end of the lever is provided with the first conductor forming lever balance with the contact, the first conductor is contacted with the second conductor on the bracket to form an electric loop of the bracket, the lever, the first conductor, the second conductor and the power supply, when the contact reaches the striking position and is stressed, the lever balance is damaged, the first conductor is disconnected with the second conductor, the striking position is positioned in a mode of combining circuit on-off and lever mechanics, the problem of inaccurate zero calibration when the striking position is covered with tissue fluid is avoided, and the accuracy of establishing an animal injury model is ensured.
Example two
In the embodiment of the present invention, the basic structure of the zero calibration device is the same as that of the first embodiment, and the same components as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, including all the features described in the first embodiment, and therefore, the description thereof is omitted.
As shown in fig. 1, 3 and 4, the striker according to the embodiment of the present invention includes a power source (not shown), a striker body and a zero calibration device. The beater body is connected with a power supply, and the zero calibration device is arranged on the beater body. The beater body comprises a frame, a beating head and a beating head adapter. The striking head is connected with the frame through the striking head adapter. The striking head comprises 1mm striking head, 2mm striking head, 3mm striking head, 4mm striking head, 5mm striking head and other specifications which can be interchanged. The support 1 of the zero calibration device is in threaded connection with the striking head adapter through a locking screw, and the contact 3 is located right below the striking head. The locking knob is arranged at the tail end of the locking screw rod, and the zero calibration device can be loaded or taken down by rotating the locking knob.
When an animal damage model is established, an experimental animal (not shown in the figure) is fixed below the zero calibration device, and the zero calibration device moves downwards along with the striking head and the striking head adapter to position the striking position. And after the striking position is positioned, recording the striking position, and finishing zero calibration. And rotating the locking knob to take down the zero calibration device, and controlling the striking head to strike the striking position according to striking parameters.
According to the zero calibration device configured on the striker, the lever is arranged on the support, one end of the lever is provided with the contact used for contacting the striking position, the other end of the lever is provided with the first conductor forming lever balance with the contact, the first conductor is contacted with the second conductor on the support to form an electric loop of the support, the lever, the first conductor, the second conductor and the power supply, when the contact reaches the striking position and is stressed, the lever balance is damaged, the first conductor and the second conductor are disconnected, the striking position is positioned in a mode of combining circuit on-off and lever mechanics, the problem of inaccurate zero calibration when the striking position is covered with tissue fluid is avoided, and the accuracy of establishing an animal injury model is guaranteed.
EXAMPLE III
The zero calibration method provided by the embodiment of the invention performs zero calibration through the striker described in the second embodiment, the basic structure of the zero calibration device is the same as that of the first embodiment, the same reference numerals are used for the same components as those in the first embodiment, and all the features described in the first embodiment are included, and thus, the details are not repeated. As shown in fig. 8, the zero calibration method includes:
step S801: the contact 3 moves as the striking head moves.
Step S802: when the contact 3 reaches the striking position and is subjected to a force, the first conductor 4 and the second conductor 5 are disconnected.
Step S803: the striking head and the contact 3 stop moving.
In the embodiment of the present invention, whether the striking position is reached is determined by whether the electrical circuit is on, and the position of the contact 3 when the electrical circuit is off is the required striking position.
The zero calibration device used by the zero calibration method provided by the embodiment of the invention is characterized in that a lever is arranged on a bracket, one end of the lever is provided with a contact for contacting a striking position, the other end of the lever is provided with a first conductor which forms lever balance with the contact, the first conductor is contacted with a second conductor on the bracket to form an electric loop of the bracket, the lever, the first conductor, the second conductor and a power supply, when the contact reaches the striking position and is stressed, the lever balance is damaged, the first conductor and the second conductor are disconnected, the striking position is positioned by combining circuit on-off and lever mechanics, the problem of inaccurate zero calibration when the striking position is covered with tissue fluid is avoided, and the accuracy of establishing an animal injury model is ensured.
Example four
In the striking method provided by the embodiment of the present invention, the striking position is obtained by the zero calibration method described in the third embodiment, the basic structure of the zero calibration device is the same as that of the first embodiment, and the same components as those in the first embodiment are labeled with the same reference numerals as those in the first embodiment, including all the features described in the first embodiment, and thus, the details are not repeated here. As shown in fig. 9, the striking method includes:
step S901: and positioning by the zero calibration method of the third embodiment to obtain the striking position.
Step S902: and after the zero calibration device is taken down, the distance between the striking head and the contact 3 is compensated.
Step S903: the striking position is struck by the striking head according to the striking parameters.
In the embodiment of the invention, after the striking position is obtained by positioning, the zero calibration device is taken down, striking parameters such as striking depth, striking speed, striking head retention time and the like are set, because the contact 3 is positioned right below the striking head, the distance from the striking head to the contact 3 is compensated through software, and then the striking head is started according to the striking parameters to strike the striking position.
The zero calibration device used in the striking method of the embodiment of the invention is characterized in that a lever is arranged on a bracket, one end of the lever is provided with a contact for contacting a striking position, the other end of the lever is provided with a first conductor which forms lever balance with the contact, the first conductor is contacted with a second conductor on the bracket to form an electric loop of the bracket, the lever, the first conductor, the second conductor and a power supply, when the contact reaches the striking position and is stressed, the lever balance is damaged, the first conductor and the second conductor are disconnected, the striking position is positioned by combining circuit on-off and lever mechanics, the problem of inaccurate zero calibration when the striking position is covered with tissue fluid is avoided, and the accuracy of establishing an animal damage model is ensured.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111310674.8A CN113739683B (en) | 2021-11-08 | 2021-11-08 | Zero calibration device and striker having the same, zero calibration method and strike method |
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| CN202111310674.8A CN113739683B (en) | 2021-11-08 | 2021-11-08 | Zero calibration device and striker having the same, zero calibration method and strike method |
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| CN113739683B CN113739683B (en) | 2022-03-15 |
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Cited By (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202300001932A1 (en) | 2023-02-07 | 2024-08-07 | Sissa Scuola Int Superiore Di Studi Avanzati | DEVICE FOR MECHANICALLY STIMULATING BIOLOGICAL MATERIAL AND RELATED PROCEDURE |
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| CN113739683B (en) | 2022-03-15 |
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Address after: 518057, Room 1901, Building A, Building 7, Shenzhen International Innovation Valley, Dashi Road, Xili Community, Xili Street, Nanshan District, Shenzhen City, Guangdong Province (9th, 19th, 20th, and 9th floors of Building A) Patentee after: Shenzhen Ruiwode Life Technology Co.,Ltd. Country or region after: China Address before: 518057 room 1901, block a, building 9, area C, Wanke Yuncheng phase III, Liuxin 4th Road, Xili community, Xili street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: RWD LIFE SCIENCE Co.,Ltd. Country or region before: China |
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Denomination of invention: Zeroing device and striker with it, zeroing method, striking method Granted publication date: 20220315 Pledgee: China Construction Bank Co.,Ltd. Shenzhen Branch Pledgor: Shenzhen Ruiwode Life Technology Co.,Ltd. Registration number: Y2025980044048 |