Quick release mechanism and handheld double-end wireless communication type optical fiber inspection instrument
By designing a quick disassembly mechanism and a master-slave control of wireless communication, the problem that existing fiber optic monitoring equipment requires two people to cooperate with the test is solved, and the effect of efficiently completing fiber optic line search and testing by a single person is achieved.
Patent Information
- Application Number
- CN202323628793.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The existing fiber optic monitoring equipment requires two people to cooperate in testing, which is inefficient and the power of the light source between multiple channels is consistent, so it is impossible to accurately distinguish fibers from different channels.
A quick disassembly mechanism is designed, including a positioning unit and a snap unit, which controls the light source between the master and slave through wireless communication, and realizes single-person optical fiber line checking, optical decay test and optical power test.
It has achieved single-person completion of fiber optic wire core inspection, optical decay test and optical power test, reducing manpower consumption, improving work efficiency, and distinguishing optical fibers from different channels through wireless communication.
Smart Images
Figure CN222652521U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical fiber core detection equipment, in particular to a quick-release mechanism and a handheld double-end wireless communication type optical fiber line detector. Background Art
[0002] Optical fiber is widely used for communication connection in substations. As the operation time of substations increases, the problem of optical fiber transmission attenuation or interruption is also increasing. At this time, protection and automation professional teams are needed to go to the substation for inspection and maintenance. The traditional testing method relies on one person using a laser lighting pen to simulate the light source on one side of the optical cable, and another person observes the optical fiber core on the other side to make judgments and searches. At the same time, it is also necessary to use an optical power meter or optical multimeter to perform attenuation test on the optical fiber link for comprehensive judgment. In this process, two people are required to cooperate, and each optical fiber is tested one by one, which leads to low work efficiency.
[0003] At present, some instruments have the function of multi-channel fiber optic line detection, but it also requires two people to cooperate in testing at both ends of the optical fiber; and the light source power between multiple channels is consistent, and it is impossible to accurately distinguish the optical fibers of different channels during the line detection process. Utility Model Content
[0004] In view of the above-mentioned prior art problems, the present utility model is proposed.
[0005] The utility model aims to provide a quick-release mechanism, which aims to solve the problem that the existing monitoring instrument requires two people to cooperate in testing at both ends of the optical fiber, which consumes a lot of manpower; and the light source power between multiple channels is consistent, and the optical fibers of different channels cannot be accurately distinguished during the line checking process.
[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a quick release mechanism, comprising a positioning unit, including a first fixing frame, a limiting member arranged inside the first fixing frame, a connecting rod arranged at an end of the limiting member, and a reset member arranged at one side of the limiting member;
[0007] The buckle unit comprises a second fixing frame and a locking buckle arranged at an end of the second fixing frame;
[0008] The first fixing frame and the second fixing frame are in close contact with each other; and the locking buckle is adapted to the limiting member.
[0009] As a preferred solution of the quick-release mechanism of the utility model, the first fixing frame includes a cavity arranged inside the first fixing frame, a positioning sleeve arranged on the side wall of the cavity, an insertion hole arranged on the end surface of the first fixing frame, a guide groove arranged on the side wall of the first fixing frame, and a circular hole arranged on the inner side of the positioning sleeve;
[0010] The locking buckle passes through the insertion hole and extends to the inner side of the first fixing frame.
[0011] As a preferred solution of the quick-release mechanism of the utility model, wherein: the limiting member includes a trapezoidal block, a rotating shaft arranged at both ends of the trapezoidal block, a guide rod arranged on the side wall of the trapezoidal block, and a compression spring sleeved on the outer side of the guide rod;
[0012] The rotating shaft is inserted into the interior of the positioning sleeve; the guide rod passes through the guide groove and extends to the outside thereof.
[0013] As a preferred solution of the quick release mechanism of the utility model, wherein: the connecting rod includes a knob arranged at the end thereof;
[0014] One end of the connecting rod is connected to the rotating shaft; the connecting rod passes through the circular hole and extends outward.
[0015] As a preferred solution of the quick release mechanism of the utility model, wherein: the reset member includes a fixed block, a fixed rod arranged at the end of the fixed block, and a reset spring arranged outside the fixed rod;
[0016] The fixing rod passes through the first fixing frame and extends to the outside thereof; the end of the fixing block contacts the end of the locking buckle.
[0017] As a preferred solution of the quick release mechanism of the utility model, wherein: the locking buckle includes a curved portion arranged at its end;
[0018] The trapezoidal block includes arc surfaces disposed at its corners;
[0019] The curved portion is matched with the curved surface.
[0020] As a preferred solution of the quick-release mechanism of the utility model, wherein: the limit member is located inside the cavity; the rotating shaft rotates along the axial direction of the positioning sleeve; and the two ends of the compression spring are in contact with the side wall of the trapezoidal block and the inner wall of the cavity respectively.
[0021] The beneficial effects of the quick-release mechanism of the utility model are as follows: a single person can complete optical fiber core inspection, optical attenuation test and optical power test, thereby reducing the workload of protection and automation team maintenance and overhaul and improving work efficiency; through the cooperation between the provided buckle unit and the positioning unit, the host and the slave can be better combined, so that it is easier for the staff to take the matching line inspection instrument and easier for the staff to use.
[0022] Another object of the utility model is to provide a handheld double-ended wireless communication type optical fiber line checking instrument, which aims to solve the problem that the existing monitoring equipment requires two people to cooperate and tests optical fibers one by one in sequence, resulting in low work efficiency.
[0023] In order to solve the above technical problems, the utility model also provides the following technical solutions: a handheld double-ended wireless communication type optical fiber line checking instrument, which includes a quick release mechanism; and a host, including a first wireless communication module, a human-computer interaction module, and a photoelectric conversion module, an analog-to-digital conversion module and a first single-chip microcomputer module connected in sequence;
[0024] The slave includes a second wireless communication module and a second single-chip computer module, a power current module and a light emitting module connected in sequence;
[0025] The first wireless communication module and the human-computer interaction module are both connected to the first single-chip computer module; the second single-chip computer module is connected to the second wireless communication module.
[0026] As a preferred solution of the utility model handheld double-end wireless communication type optical fiber line checking instrument, wherein: the photoelectric conversion module includes a PD photosensitive head and an operational amplifier; the photoelectric conversion module is used to receive the optical signal transmitted by the optical fiber to be tested, and convert and amplify it into a 0-7V voltage signal;
[0027] The analog-to-digital conversion module uses a 16-bit high-speed A / D to convert a 0-7V voltage signal into a digital signal;
[0028] The first single-chip microcomputer module is a GD32 microcontroller, which is used to calculate the effective value of the digital signal and convert it into optical power. At the same time, in conjunction with the transmission power of the light-emitting module, it determines the light-emitting channel of the slave machine at the other end of the optical fiber and calculates the optical attenuation value of the optical fiber.
[0029] As a preferred solution of the handheld double-ended wireless communication type optical fiber line checking instrument of the utility model, wherein: the second single-chip microcomputer module is a GD32 microcontroller, and the second single-chip microcomputer module is used to parse the control command and send it to the power current module; the power current module is used to output 0-20mA current of different amplitudes through different resistance value configurations;
[0030] The light emitting module is an LD laser head, and the light emitting module is used to output optical signals with different optical power values to the optical fiber to be tested;
[0031] The first wireless communication module and the second wireless communication module both adopt LORA long-distance wireless transmission technology and operate in the 433MHz frequency band; the first wireless communication module is used to control the start and stop of the light source of the slave; the second wireless communication module is used to receive the start / stop control command of the host.
[0032] The beneficial effects of the handheld double-ended wireless communication type optical fiber line checker of the utility model are as follows: it is equipped with a master-slave test machine; firstly, the master and slave machines have 8 optical transmission and optical receiving channels, and the optical power values between the channels are different, so that 8 optical fibers can be tested at one time on site, and the channels can be distinguished by the optical receiving power; secondly, the master and slave machines are controlled by wireless communication, which is small in size, easy to carry, and practical in function. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.
[0035] Figure 2 It is a schematic diagram of the connection structure between the positioning unit and the buckle unit in the utility model.
[0036] Figure 3 It is a schematic diagram of the explosion structure of the positioning unit in the utility model.
[0037] Figure 4 It is a partial cross-sectional view of the first fixing frame in the utility model.
[0038] Figure 5 It is the principle diagram of the host in the utility model.
[0039] Figure 6 This is the principle diagram of the slave in the utility model. DETAILED DESCRIPTION
[0040] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.
[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0042] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.
[0043] Example 1
[0044] Reference Figure 1 to Figure 4 , which is the first embodiment of the utility model, and this embodiment provides a quick release mechanism, including; a positioning unit 300, including a first fixing frame 301, a limiting member 302 arranged on the inner side of the first fixing frame 301, a connecting rod 303 arranged at the end of the limiting member 302, and a reset member 304 arranged on one side of the limiting member 302.
[0045] Preferably, the first fixing frame 301 is fixedly connected to the host 100; the first fixing frame 301 is provided to provide a certain space for the installation position of the limit member 302, which can ensure that the limit member 302 is located inside the first fixing frame 301 and rotates; the connecting rod 303 is provided to pass through the outside of the first fixing frame 301, so that the staff can rotate the connecting rod 303 outside the first fixing frame 301, so that the limit member 302 can be rotated to a certain angle; thereby, the limit member 302 can be separated from the locking buckle 402, so that the staff can separate the host 100 from the slave 200.
[0046] Furthermore, the buckle unit 400 includes a second fixing frame 401 and a locking buckle 402 disposed at the end of the second fixing frame 401 ; the locking buckle 402 is adapted to the limiting member 302 .
[0047] Preferably, the second fixing frame 401 is welded and fixed to the slave machine 200, and the second fixing frame 401 is matched with the first fixing frame 301; the second fixing frame 401 is welded and fixed to the locking buckle 402, and the locking buckle 402 is matched with the limiting member 302; the position between the first fixing frame 301 and the second fixing frame 401 can be better fixed.
[0048] When in use, the host 100 and the slave 200 are fitted together, and then the second fixing frame 401 is aligned with the position of the first fixing frame 301, and then the locking buckle 402 is inserted into the first fixing frame 301, so that the locking buckle 402 and the limiting member 302 cooperate with each other, and the locking buckle 402 and the limiting member 302 are tightly fitted, and then the position between the first fixing frame 301 and the second fixing frame 301 is fixed. When it is necessary to release the fixation, the connecting rod 303 is rotated, and the connecting rod 303 drives the limiting member 302 to rotate, so that the limiting member 302 is away from one side of the locking buckle 402, and then the locking buckle 402 is taken out from the first fixing frame 301, so as to facilitate the separation of the host 100 and the slave 200.
[0049] In summary, by cooperating with each other through the positioning unit 300 and the snap unit 400, the host 100 and the slave 200 can be better combined together, so that the staff can quickly take away the matching equipment for use, which to a certain extent reduces the time for the staff to find paired master and slave machines and improves work efficiency.
[0050] Example 2
[0051] Reference Figure 1 to Figure 4 , which is the second embodiment of the utility model, includes; the first fixing frame 301 includes a cavity 301a arranged therein, a positioning sleeve 301b arranged on the side wall of the cavity 301a, an insertion hole 301c arranged on the end surface of the first fixing frame 301, a guide groove 301d arranged on the side wall of the first fixing frame 301, and a circular hole 301e arranged on the inner side of the positioning sleeve 301b; the locking buckle 402 passes through the insertion hole 301c and extends to the inner side of the first fixing frame 301.
[0052] Preferably, the positioning sleeve 301b is welded and fixed to the inner wall of the cavity 301a; the interior of the positioning sleeve 301b is a hollow structure, and one group of positioning sleeves 301b is connected to 301e; the locking buckle 402 passes through the insertion hole 301c and is inserted into the cavity 301a, so that the locking buckle 402 and the limit member 302 can cooperate with each other.
[0053] Furthermore, the limiting member 302 includes a trapezoidal block 302a, a rotating shaft 302b arranged at both ends of the trapezoidal block 302a, a guide rod 302c arranged on the side wall of the trapezoidal block 302a, and a compression spring 302d sleeved on the outside of the guide rod 302c; the rotating shaft 302b is inserted into the interior of the positioning sleeve 301b; the guide rod 302c passes through the guide groove 301d and extends to the outside thereof.
[0054] Preferably, the trapezoidal block 302a is a trapezoidal structure, so that when the end of the trapezoidal block 302a is squeezed by the downward locking buckle 402, the trapezoidal block 302a can move to one side, so that the trapezoidal block 302a can be flipped to facilitate the insertion of the locking buckle 402; the rotating shaft 302b plays a role in supporting the trapezoidal block 302a, so that the rotating shaft 302b can rotate along the axial direction of the positioning sleeve 301b.
[0055] Further, the connecting rod 303 includes a knob 303a disposed at its end; one end of the connecting rod 303 is connected to the rotating shaft 302b; the connecting rod 303 passes through the circular hole 301e and extends outward.
[0056] Preferably, a knob 303a is provided at the end of the connecting rod 303; the knob 303a is located outside the cavity 301a, which can better facilitate the staff to rotate the connecting rod 303. The rotating connecting rod 303 can drive the limit member 302 to rotate, thereby facilitating the unlocking of the limit member 302 and the locking buckle 402.
[0057] Furthermore, the reset member 304 includes a fixed block 304a, a fixed rod 304b arranged at the end of the fixed block 304a, and a reset spring 304c arranged on the outside of the fixed rod 304b; the fixed rod 304b passes through the first fixed frame 301 and extends to the outside thereof; the end of the fixed block 304a contacts the end of the locking buckle 402.
[0058] Preferably, there are two groups of fixing rods 304b, and the two groups of fixing rods 304b are symmetrically arranged on the end surface of the fixing block 304a. The set fixing rods 304b can penetrate to the outside of the first fixing frame 301; the movement trajectory of the reset spring 304c can be guided by the set fixing rods 304b to ensure that the reset spring 304c will not be squeezed and deformed to one side during the compression process; the set fixing block 304a is in contact with the locking buckle 402; when the fixing block 304a is lifted up by the upward force of the reset spring 304c, the fixing block 304a can push the locking buckle 402 to move, thereby facilitating the staff to remove the locking buckle 402 from the inside of the first fixing frame 301.
[0059] Furthermore, the locking buckle 402 includes a bent portion 402a arranged at its end; the trapezoidal block 302a includes an arc surface 302a-1 arranged at its corner; the bent portion 402a is adapted to the arc surface 302a-1; the limit member 302 is located on the inner side of the cavity 301a; the rotating shaft 302b rotates along the axial direction of the positioning sleeve 301b; and the two ends of the compression spring 302d are in contact with the side wall of the trapezoidal block 302a and the inner wall of the cavity 301a respectively.
[0060] Preferably, the curved portion 402a cooperates with the arc surface 302a-1 to better ensure that the locking buckle 402 can be limited between the limiting member 302, thereby fixing the position between the first fixing frame 301 and the second fixing frame 401; the rotating shaft 302b rotates along the axial direction of the positioning sleeve 301b, so that the rotating shaft 302b can rotate and drive the trapezoidal block 302a to rotate; the set compression spring 302d can push the trapezoidal block 302a to reset, so as to facilitate the next connection and fixation.
[0061] When in use, when the staff needs to connect the host 100 and the slave 200, the first fixing frame 301 and the second fixing frame 401 are aligned together. As the first fixing frame 301 and the second fixing frame 401 are aligned, the locking buckle 402 is inserted into the first fixing frame 301, and the end of the locking buckle 402 presses the surface of the trapezoidal block 302a. As the surface of the trapezoidal block 302a is pressed, the rotating shaft 302b is turned over along the axial direction of the positioning sleeve 301b; at this time, the end of the trapezoidal block 302a is pressed gradually away from the The locking buckle 402 is separated from the locking buckle 402. At the same time, as the trapezoidal block 302a turns over, the compression spring 302d set on one side of the trapezoidal block 302a is in a compressed state; the locking buckle 402 is moving downward, and the fixed block 304a is squeezed. As the locking buckle 402 goes deeper, the reset spring 304c is in a compressed state; when the bent portion 402a corresponds to the position of the arc surface 302a-1, the trapezoidal block 302a is no longer squeezed. At this time, the compression spring 302d pushes the trapezoidal block 302a to reset, and the arc surface 302a-1 is aligned with the bent portion 402a. The curved portion 402a cooperates with the trapezoidal block 302a and is engaged with the locking buckle 402, thereby realizing the connection between the host 100 and the slave 200; when the host 100 and the slave 200 need to be separated; the knob 303a is turned to make the knob 303a rotate to drive the connecting rod 303 to rotate, and the connecting rod 303 rotates to drive the trapezoidal block 302a to rotate, and the trapezoidal block 302a flips in the direction away from the locking buckle 402, and the guide rod 302c is driven to rotate while the trapezoidal block 302a rotates, and the guide rod 302c penetrates the guide Slot 301d and moves along an arc trajectory; as the trapezoidal block 302a continues to flip, the compression spring 302d is located between the trapezoidal block 302a and the cavity 301a and is in a compressed state; as the trapezoidal block 302a moves away from the locking buckle 402, the locking buckle 402 is no longer restricted. At this time, the slave 200 is lifted up, and the locking buckle 402 can leave the inside of the first fixed frame 301. As the locking buckle 402 continues to rise, the return spring 304c pushes the knob 303a to move upward, which can further assist the movement of the locking buckle 402.
[0062] In summary, a single person can complete the optical fiber core inspection, optical attenuation test and optical power test, thereby reducing the workload of protection and automation team maintenance and repair and improving work efficiency; through the cooperation between the set buckle unit and the positioning unit, the host and the slave can be better combined, so that it is easier for the staff to take the matching line inspection instrument and better for the staff to use.
[0063] Example 3
[0064] Reference Figure 1 to Figure 6 , which is the third embodiment of the utility model, and this embodiment further provides a handheld double-ended wireless communication type optical fiber line checking instrument, comprising;
[0065] First, the host 100 includes a photoelectric conversion module, an analog-to-digital conversion module, a first single-chip microcomputer module, a first wireless communication module and a human-computer interaction module.
[0066] The photoelectric conversion module consists of a PD photosensitive head and an operational amplifier; it is used to receive the optical signal transmitted by the optical fiber and convert and amplify it into a small voltage signal of 0-7V.
[0067] Furthermore, the analog-to-digital conversion module adopts a 16-bit high-speed A / D; it is connected to the photoelectric conversion module and is used to convert a 0-7V voltage small signal into a digital signal.
[0068] Furthermore, the first single-chip microcomputer module adopts the domestic 32-bit single-chip microcomputer GD32; the first single-chip microcomputer module is connected to the analog-to-digital conversion module, which is used to calculate the effective value of the 0-7V voltage small signal and convert it into optical power; at the same time, in conjunction with the transmission power of the light-emitting module in the slave machine, the light-emitting channel of the slave machine at the other end of the optical fiber is determined and the optical attenuation value of the optical fiber is calculated.
[0069] Furthermore, the first wireless communication module adopts LORA long-distance wireless transmission technology; operates in the 433MHz frequency band; the first wireless communication module is connected to the first single-chip microcomputer module and communicates with the slave 200 at the same time to control the start and stop of the slave light source.
[0070] Furthermore, the human-computer interaction module adopts a 5-inch color touch LCD screen; the human-computer interaction module is connected to the first single-chip computer module for human-computer interaction control and result data display.
[0071] Secondly, the slave includes a second wireless communication module, a second single-chip computer module, a power current module and a light emitting module.
[0072] The second wireless communication module adopts LORA long-distance wireless transmission technology and operates in the 433MHz frequency band. The second wireless communication module communicates with the first wireless communication module of the host to receive the start / stop control command of the host 100.
[0073] Furthermore, the second single-chip microcomputer module adopts a domestic 32-bit single-chip microcomputer GD32; the second single-chip microcomputer module is connected to the second wireless communication module, and is used to parse the control command and send it to the power current module.
[0074] Furthermore, the power current module is connected to the second single-chip microcomputer module, and the power current module receives a high / low level control signal sent by the second single-chip microcomputer module; the power current module can output 0-20mA currents of different amplitudes through different resistance value configurations.
[0075] Furthermore, the light emitting module adopts an LD laser head current control type; the light emitting module is connected to the power current module to output optical signals with different optical power values to the optical fiber.
[0076] Finally, as a further description of the above technical solution, a total of eight groups of photoelectric conversion modules, analog-to-digital conversion modules in the host and power current modules and light-emitting modules in the slave are arranged; among them, the power current module generates eight groups of 0-20mA currents with different amplitudes to the light-emitting module through different resistance combinations, and the light-emitting module sends eight groups of optical signals with different optical power values to the optical fiber.
[0077] When using: First, insert one end of 8 optical fibers to be tested into the host 100 and the other end into the slave 200.
[0078] Through the display screen operation of the host 100, the first wireless communication module sends a start output command to the second wireless communication module, wherein the control output command includes 8 fields, representing 8 channels respectively, and supports the selection of any channel or all channels.
[0079] The second single-chip microcomputer module of the slave controls the corresponding power current module to conduct according to the output command, and outputs current to the light-emitting module.
[0080] The light-emitting modules send optical signals to the optical fibers respectively, wherein the optical power values of the 8-channel light-emitting modules are preset to -5dbm, -10dbm, -15dbm, -20dbm, -25dbm, -30dbm, -35dbm, and -40dbm.
[0081] The photoelectric conversion module and the analog-to-digital conversion module receive the optical signal transmitted by the optical fiber to be tested.
[0082] The first single-chip microcomputer module of the host calculates the effective value of the voltage small signal and converts it into optical power, determines the channel number of the light-emitting module of the opposite slave 200 by the difference in the received optical power value, and calculates the optical attenuation of the optical fiber.
[0083] The first single-chip microcomputer module sends the test results to the human-computer interaction module for display.
[0084] For normal optical fibers, the first single-chip microcomputer module of the host can correctly determine the channel number of the opposite slave machine through the difference in optical power values, and complete the optical fiber line tracing and optical attenuation tests; for defective optical fibers, the optical fiber line tracing and optical attenuation tests can be implemented by testing them separately again, that is, testing again only the slave machine light-emitting module of one channel.
[0085] In addition, when the main unit is used alone, the optical power test of 8 optical fibers can be completed on site.
[0086] (1) One end of the optical fiber to be tested is plugged into the host.
[0087] (2) The host optical-electrical conversion module and the analog-to-digital conversion module receive the optical signal transmitted by the optical fiber to be tested.
[0088] (3) The first single-chip microcomputer module of the host calculates the effective value of the 0-7V voltage small signal and converts it into optical power. At the same time, it statistically calculates and displays the real-time optical power, average optical power, maximum optical power and minimum optical power.
[0089] In summary, it is equipped with a master-slave tester; firstly, the master and slave machines have 8 optical sending and receiving channels, and the optical power values between the channels are different, so that 8 optical fibers can be tested on site at one time, and the channels can be distinguished by the optical receiving power; secondly, the master and slave machines are controlled by wireless communication, which is small in size, easy to carry, and practical in function. A single person can complete the optical fiber core inspection, optical attenuation test, and optical power test, thereby reducing the workload of protection and automation team maintenance and overhaul and improving work efficiency.
[0090] It is important to note that the above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A quick release mechanism, characterized in that: include, A positioning unit (300) comprising a first fixing frame (301), a limiting member (302) arranged inside the first fixing frame (301), a connecting rod (303) arranged at the end of the limiting member (302), and a resetting member (304) arranged at one side of the limiting member (302); The buckle unit (400) comprises a second fixing frame (401) and a locking buckle (402) arranged at the end of the second fixing frame (401); The first fixing frame (301) and the second fixing frame (401) are in close contact with each other; and the locking buckle (402) is adapted to the limiting member (302).
2. The quick release mechanism according to claim 1, characterized in that: The first fixing frame (301) comprises a cavity (301a) arranged inside the first fixing frame, a positioning sleeve (301b) arranged on the side wall of the cavity (301a), an insertion hole (301c) arranged on the end surface of the first fixing frame (301), a guide groove (301d) arranged on the side wall of the first fixing frame (301), and a circular hole (301e) arranged on the inner side of the positioning sleeve (301b); The locking buckle (402) passes through the insertion hole (301c) and extends to the inside of the first fixing frame (301).
3. The quick release mechanism according to claim 2, characterized in that: The limiting member (302) comprises a trapezoidal block (302a), a rotating shaft (302b) arranged at both ends of the trapezoidal block (302a), a guide rod (302c) arranged on a side wall of the trapezoidal block (302a), and a compression spring (302d) sleeved on the outside of the guide rod (302c); The rotating shaft (302b) is inserted into the interior of the positioning sleeve (301b); and the guide rod (302c) passes through the guide groove (301d) and extends to the outside thereof.
4. The quick release mechanism according to claim 3, characterized in that: The connecting rod (303) includes a knob (303a) arranged at an end thereof; One end of the connecting rod (303) is connected to the rotating shaft (302b); the connecting rod (303) passes through the circular hole (301e) and extends outward.
5. The quick release mechanism according to claim 4, characterized in that: The reset member (304) comprises a fixed block (304a), a fixed rod (304b) arranged at the end of the fixed block (304a), and a reset spring (304c) arranged outside the fixed rod (304b); The fixing rod (304b) passes through the first fixing frame (301) and extends to the outside thereof; the end of the fixing block (304a) contacts the end of the locking buckle (402).
6. The quick release mechanism according to claim 5, characterized in that: The locking buckle (402) comprises a bent portion (402a) arranged at an end thereof; The trapezoidal block (302a) comprises a curved surface (302a-1) arranged at its corner; The curved portion (402a) is matched with the curved surface (302a-1).
7. The quick release mechanism according to any one of claims 4 to 6, characterized in that: The limiting member (302) is located inside the cavity (301a); the rotating shaft (302b) rotates along the axial direction of the positioning sleeve (301b); and the two ends of the compression spring (302d) are in contact with the side wall of the trapezoidal block (302a) and the inner wall of the cavity (301a) respectively.
8. A handheld double-ended wireless communication type optical fiber line checking instrument, characterized in that: comprising the quick release mechanism according to any one of claims 1 to 7; and A host (100) comprises a first wireless communication module, a human-computer interaction module, and a photoelectric conversion module, an analog-to-digital conversion module and a first single-chip microcomputer module which are connected in sequence; A slave (200) comprises a second wireless communication module and a second single-chip computer module, a power current module and a light emitting module connected in sequence; The first wireless communication module and the human-computer interaction module are both connected to the first single-chip computer module; the second single-chip computer module is connected to the second wireless communication module.
9. The handheld double-ended wireless communication type optical fiber inspection instrument as claimed in claim 8, characterized in that: The photoelectric conversion module includes a PD photosensitive head and an operational amplifier; the photoelectric conversion module is used to receive the optical signal transmitted by the optical fiber to be tested, and convert and amplify it into a 0-7V voltage signal; The analog-to-digital conversion module uses a 16-bit high-speed A / D to convert a 0-7V voltage signal into a digital signal; The first single-chip microcomputer module is a GD32 microcontroller, which is used to calculate the effective value of the digital signal and convert it into optical power. At the same time, in conjunction with the transmission power of the light-emitting module, it determines the light-emitting channel of the slave machine at the other end of the optical fiber and calculates the optical attenuation value of the optical fiber.
10. The handheld double-ended wireless communication type optical fiber inspection instrument according to claim 9, characterized in that: The second single-chip microcomputer module is a GD32 microcontroller, and the second single-chip microcomputer module is used to parse the control command and send it to the power current module; the power current module is used to output 0-20mA current of different amplitudes through different resistance value configurations; The light emitting module is an LD laser head, and the light emitting module is used to output optical signals with different optical power values to the optical fiber to be tested; The first wireless communication module and the second wireless communication module both adopt LORA long-distance wireless transmission technology and operate in the 433MHz frequency band; the first wireless communication module is used to control the start and stop of the light source of the slave; the second wireless communication module is used to receive the start / stop control command of the host.