An induction voltage measuring device for experiments
By designing an automatically closed protective cage in the induced voltage measurement device, the problem of the voltage sensor being easily damaged when the instrument falls, and excellent protection of the voltage sensor is achieved.
Patent Information
- Application Number
- CN202210620558.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-06-02
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2042-06-02
AI Technical Summary
The existing induced voltage measuring instruments are easily damaged when they fall, resulting in damage to the equipment.
A test-based induction voltage measurement device is designed, which automatically closes to protect the voltage sensor and reduces the risk of impact by setting up a protective cage.
It effectively protects the voltage sensor, reduces the possibility of damage during drop, and ensures the stability and reliability of the measuring device.
Smart Images
Figure CN114966169B_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of induction voltage measurement devices, and particularly relates to an induction voltage measurement device for experiments. Background Art
[0002] The measurement of line induction voltage is one of the important measurement indicators in line parameter measurement. Generally, an induction voltage measurement instrument is used for measurement. In order to achieve more accurate measurement, the voltage sensors on existing induction voltage measurement instruments are generally located on the surface of the instrument and can be closer to the line during measurement. Although this can achieve more accurate measurement, there is also a problem of being more easily damaged. For example, when the instrument accidentally drops during operation, when the part with the voltage sensor is impacted, the position of the voltage sensor on the instrument is extremely easy to be damaged, resulting in damage to this position and even directly damaging the voltage sensor. Summary of the Invention
[0003] Aiming at the drawback that the voltage sensor of the induction voltage measurement instrument is easily damaged when it drops in the prior art, the present invention provides an induction voltage measurement device for experiments. The induction voltage measurement device can protect the position of the voltage sensor of the induction voltage measurement device by setting a protective cage, reducing the possibility of the position with the voltage sensor being impacted, thereby playing an excellent protective role for the voltage sensor.
[0004] The invention object of the present invention is achieved through the following technical solutions: An induction voltage measurement device for experiments, including an operating rod with a hollow structure and a measurement module installed on the operating rod.
[0005] A boss is fixedly connected to the upper end of the operating rod. At least three first vertical grooves are provided at the upper end of the operating rod and are circumferentially arrayed around the boss. The length direction of the first vertical groove is parallel to the center line of the operating rod. The cross-section of the first vertical groove is a rectangular structure, and the length direction of the cross-section of the first vertical groove points to the center line of the operating rod. A second vertical groove is provided on the operating rod on the side away from the center line of the operating rod. The width of the second vertical groove is greater than the width of the first vertical groove. The first vertical groove and the second vertical groove are communicated and combined to form a vertical guide groove with a T-shaped cross-section. The upper end of the second vertical groove is lower than the upper end of the first vertical groove. An inclined guide groove is also provided between the first vertical groove and the second vertical groove. The width of the inclined guide groove is equal to the width of the second vertical groove, and the lower end of the inclined guide groove is communicated with the upper end of the second vertical groove. The inclined guide groove is inclined upward from bottom to top toward the side where the first vertical groove is provided. A vertical rod is provided in the vertical guide groove. A transverse blocking portion is fixedly connected to the upper end of the vertical rod. The transverse blocking portions on all the vertical rods can be assembled to form a protective cage covering the outside of the boss. A slider that can slide along the inclined guide groove and the second vertical groove is fixedly provided on the vertical rod. The longitudinal cross-section of the slider is a parallelogram structure. A sliding plate that can only slide along the length direction of the operating rod is also provided in the operating rod. The vertical rod is perpendicular to the sliding plate and is slidably connected between the vertical rod and the sliding plate. The sliding direction between the vertical rod and the sliding plate is parallel to the length direction of the cross-section of the corresponding first vertical groove. A pull rod is vertically and fixedly connected to the lower end of the sliding plate. A key is provided on the operating rod. A linkage mechanism that can drive the pull rod to move longitudinally back and forth is provided between the key and the lower end of the operating rod. A spring that can drive the sliding plate to reset is also provided in the operating rod.
[0006] The measurement module includes a voltage sensor, a single-chip microcomputer, a storage unit, a display screen, a power conversion circuit, and a storage battery. The voltage sensor is fixed on the boss. The power conversion circuit includes a high-voltage end and a low-voltage end. The high-voltage end is electrically connected to an external socket. The voltage sensor, the single-chip microcomputer, the storage unit, the display screen, and the storage battery are all arranged at the low-voltage end. The voltage sensor, the storage unit, the display screen, and the storage battery are respectively electrically connected to the single-chip microcomputer. The storage battery can be charged through the external socket. The storage battery uses a lithium battery.
[0007] In the above test induction voltage measuring device, by pressing the key and through the transmission of the linkage mechanism, it is possible to drive the separation between the transverse blocking portions that form the protective cage, that is, to open the protective cage and expose the boss provided with the voltage sensor. At this time, it is convenient for the test induction voltage measuring device to measure the induction voltage. If the test induction voltage measuring device accidentally drops from the hand during operation, under the action of the spring, the protective cage will automatically close to protect the boss provided with the voltage sensor, reducing the possibility of the boss provided with the voltage sensor being impacted, thereby playing an excellent protective role for the voltage sensor.
[0008] Preferably, the linkage mechanism includes a first movable block fixed at the lower end of the pull rod and can only slide longitudinally, a first inclined surface is provided on the first movable block, a second movable block is fixed on the button and is arranged on the operating rod for transverse sliding, the sliding direction of the second movable block is perpendicular to the sliding direction of the first movable block, and a second inclined surface is provided on the second movable block that is always in contact with the first inclined surface; when the second movable block moves toward the first movable block, the second inclined surface cooperates with the first inclined surface to drive the first movable block to slide downward, and the first movable block slides upward to drive the second movable block to slide toward the outside of the operating rod. Through the cooperation between the first movable block and the second movable block, the pull rod can be driven to perform longitudinal reciprocating motion.
[0009] Preferably, a finger sleeve is fixedly provided on the button. When using the test induced voltage measuring device, the finger can be put into the finger sleeve, which can reduce the possibility of the test induced voltage measuring device falling during use.
[0010] Preferably, the operating rod is provided with a transversely arranged installation groove, the button is slidably arranged in the installation groove, and a limit block is fixedly connected to the button to prevent the button from detaching from the installation groove. The side of the limit block protrudes relative to the side of the button and the limit block is located in the operating rod.
[0011] Preferably, a through groove is provided on each side of the vertical rod, and a sliding groove corresponding to the vertical rod is provided on the sliding plate, the upper and lower side walls of the through groove are respectively fitted on the upper and lower side surfaces of the sliding plate, and the vertical side walls of the through groove on both sides of the vertical rod are respectively fitted with the left and right side walls of the sliding groove, the vertical rod passes through the sliding groove and the position where the through groove is provided on the vertical rod is slidably connected with the position where the sliding groove is provided on the sliding plate.
[0012] Preferably, the transverse blocking part is a rod-shaped structure, and the transverse blocking part is perpendicular to the vertical rod, and the transverse blocking part and the vertical rod form an L-shaped structure, and when all the transverse blocking parts are assembled to form a protective cage, the ends of adjacent transverse blocking parts away from the vertical rod fit together. When the protective cage is folded, such an arrangement can protect the position directly above the voltage sensor, thereby achieving an excellent protective effect.
[0013] Preferably, a first fixed plate and a second fixed plate are fixed inside the operating rod, and guide grooves are provided on the first fixed plate and the second fixed plate. The first fixed plate is located below the sliding plate, and the pull rod is slidably sleeved in the guide groove of the first fixed plate. The spring is arranged between the sliding plate and the first fixed plate, and the first movable block is slidably sleeved in the guide groove of the second fixed plate. The first fixed plate and the second fixed plate can be used to guide the sliding of the pull rod and the second movable block, respectively, so that the pull rod and the second movable block are more stable when sliding.
[0014] Preferably, the single chip microcomputer is a single chip microcomputer with an analog-to-digital converter, and the single chip microcomputer is electrically connected to the voltage sensor via the analog-to-digital converter.
[0015] Preferably, except for the voltage sensor, the display screen, and the external jack in the measurement module, the remaining components are fixedly arranged in the operating rod. The display screen and the external jack are fixedly arranged on the outer side surface of the operating rod.
[0016] Preferably, the voltage sensor is a photo - electrically isolated sensor.
[0017] Compared with the prior art, the present invention has the following beneficial effects: The protective cage provided by the present invention can excellently protect the position where the voltage sensor of the induced voltage measuring device is located through the automatic folding method, reducing the possibility of the position where the voltage sensor is located being impacted, and when the protective cage is opened, it can expose the position where the voltage sensor is located without affecting the use of the induced voltage measuring device. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a perspective view of the present invention;
[0019] Figure 2 is a top view of the present invention;
[0020] Figure 3 is Figure 2 a cross - sectional view taken along line A - A in
[0021] Figure 4 is a schematic diagram of the internal structure of the present invention;
[0022] Figure 5 is a schematic diagram of the connection structure of some components located in the operating rod;
[0023] Figure 6 is a schematic diagram of the cross - sectional structure of the operating rod;
[0024] Figure 7 is a perspective view of the connection structure among the vertical rod, the slider, and the transverse blocking part;
[0025] Figure 8 is a schematic diagram of the electrical connection among the components in the measurement module;
[0026] Labels in the figure: 1. Operating rod, 2. Boss, 3. First vertical groove, 4. Second vertical groove, 5. Vertical guiding groove, 6. Inclined guiding groove, 7. Vertical rod, 8. Transverse blocking part, 9. Protective cage, 10. Sliding plate, 11. Through groove, 12. Sliding groove, 13. Pull rod, 14. Button, 15. Installation groove, 16. Limiting block, 17. Finger sleeve, 18. First movable block, 19. First inclined surface, 20. Second movable block, 21. Second inclined surface, 22. Spring, 23. First fixing plate, 24. Second fixing plate, 25. Guiding groove, 26. Voltage sensor, 27. Single-chip microcomputer, 28. Storage unit, 29. Display screen, 30. Power conversion circuit, 31. Storage battery, 32. External socket, 33. Measuring module, 34. Slide block. Detailed implementation mode
[0027] The present invention will be further described below in conjunction with the embodiments shown in the drawings:
[0028] Embodiment 1
[0029] As Figures 1-8 shown, an induced voltage measuring device for experiments includes a hollow operating rod 1 and a measuring module 33 installed on the operating rod 1.
[0030] A boss 2 is fixedly connected to the upper end of the operating rod 1. Three first vertical grooves 3 are provided at the upper end of the operating rod 1 and are arranged in a circumferential array around the boss 2. The length direction of the first vertical groove 3 is parallel to the central axis of the operating rod 1. The cross-section of the first vertical groove 3 is a rectangular structure, and the length direction of the cross-section of the first vertical groove 3 points to the central axis of the operating rod 1. A second vertical groove 4 is provided on the side of the operating rod 1 away from the central axis of the operating rod 1 with respect to the first vertical groove 3. The width of the second vertical groove 4 is greater than the width of the first vertical groove 3. The first vertical groove 3 and the second vertical groove 4 are communicated and combined to form a vertical guide groove 5 with a T-shaped cross-section. The upper end of the second vertical groove 4 is lower than the upper end of the first vertical groove 3. An inclined guide groove 6 is also provided between the first vertical groove 3 and the second vertical groove 4. The width of the inclined guide groove 6 is equal to the width of the second vertical groove 4, and the lower end of the inclined guide groove 6 is communicated with the upper end of the second vertical groove 4. The inclined guide groove 6 is inclined upward from bottom to top toward the side where the first vertical groove 3 is provided. A vertical rod 7 is provided in the vertical guide groove 5. A transverse blocking portion 8 is fixedly connected to the upper end of the vertical rod 7. The transverse blocking portions 8 on all the vertical rods 7 can be assembled to form a protective cage 9 covering the outside of the boss 2. The transverse blocking portion 8 is a rod-shaped structure, and the transverse blocking portion 8 is perpendicular to the vertical rod 7. The transverse blocking portion 8 and the vertical rod 7 form an L-shaped structure. When all the transverse blocking portions 8 are assembled to form the protective cage 9, the ends of adjacent transverse blocking portions 8 away from the vertical rod 7 are in contact with each other, and there is a gap between the protective cage 9 and the boss 2. A slider 34 that can slide along the inclined guide groove 6 and the second vertical groove 4 is fixedly provided on the vertical rod 7. The longitudinal cross-section of the slider 34 is a parallelogram structure. A sliding plate 10 that can only slide along the length direction of the operating rod 1 is further provided in the operating rod 1. The vertical rod 7 is perpendicular to the sliding plate 10, and the vertical rod 7 is slidably connected to the sliding plate 10. The sliding direction between the vertical rod 7 and the sliding plate 10 is parallel to the length direction of the cross-section of the corresponding first vertical groove 3. A through groove 11 is provided on each side of the vertical rod 7. A sliding groove 12 corresponding to the vertical rod 7 is provided on the sliding plate 10. The upper and lower side walls of the through groove 11 are respectively in contact with the upper and lower side surfaces of the sliding plate 10. The vertical side walls of the through grooves 11 on both sides of the vertical rod 7 are respectively in contact with the left and right side walls of the sliding groove 12. The vertical rod 7 passes through the sliding groove 12, and the position of the through groove 11 on the vertical rod 7 is slidably connected to the position of the sliding groove 12 on the sliding plate 10.
[0031] A pull rod 13 is vertically and fixedly connected to the lower end of the sliding plate 10. A key 14 is provided on the operating rod 1. An installation groove 15 is provided horizontally on the operating rod 1. The key 14 is slidably arranged in the installation groove 15. A limiting block 16 for preventing the key 14 from detaching from the installation groove 15 is fixedly connected to the key 14. The side surface of the limiting block 16 protrudes relative to the side surface of the key 14 and the limiting block 16 is located inside the operating rod 1. Four finger sleeves 17 are fixedly provided on the key 14. When the user holds the operating rod 1, the fingers can be inserted into the finger sleeves 17, which can reduce the possibility of the operating rod 1 dropping during use. A linkage mechanism capable of driving the pull rod 13 to move longitudinally back and forth is provided between the key 14 and the lower end of the operating rod 1. The linkage mechanism includes a first movable block 18 fixedly arranged at the lower end of the pull rod 13 and capable of only sliding longitudinally. A first inclined surface 19 is provided on the first movable block 18. A second movable block 20 fixedly arranged on the key 14 and slidably arranged horizontally on the operating rod 1 is provided. The sliding direction of the second movable block 20 is perpendicular to the sliding direction of the first movable block 18. A second inclined surface 21 that always fits the first inclined surface 19 is provided on the second movable block 20. When the second movable block 20 moves towards the first movable block 18, the first movable block 18 can be driven to slide downward through the cooperation of the second inclined surface 21 and the first inclined surface 19. When the first movable block 18 slides upward, the second movable block 20 can be driven to slide towards the outside of the operating rod 1.
[0032] A spring 22 capable of driving the sliding plate 10 to reset is further provided in the operating rod 1. A first fixing plate 23 and a second fixing plate 24 are fixedly arranged in the operating rod 1. Guide grooves 25 are provided on both the first fixing plate 23 and the second fixing plate 24. The first fixing plate 23 is located below the sliding plate 10. The pull rod 13 is slidably sleeved in the guide groove 25 on the first fixing plate 23. The spring 22 is arranged between the sliding plate 10 and the first fixing plate 23. The first movable block 18 is slidably sleeved in the guide groove 25 of the second fixing plate 24.
[0033] The measurement module 33 includes a voltage sensor 26, a single-chip microcomputer 27, a storage unit 28, a display screen 29, a power conversion circuit 30, and a storage battery 31. The voltage sensor 26 is fixed on the boss 2. The power conversion circuit 30 includes a high-voltage end and a low-voltage end. The high-voltage end is electrically connected to an external socket 32. The voltage sensor 26, the single-chip microcomputer 27, the storage unit 28, the display screen 29, and the storage battery 31 are all arranged at the low-voltage end. The voltage sensor 26, the storage unit 28, the display screen 29, and the storage battery 31 are respectively electrically connected to the single-chip microcomputer 27, and the single-chip microcomputer 27 is electrically connected to the low-voltage end of the power conversion circuit 30. The single-chip microcomputer 27 is a single-chip microcomputer with an analog-to-digital converter, and the single-chip microcomputer 27 is electrically connected to the voltage sensor 26 through the analog-to-digital converter. The voltage sensor 26 is a photoelectric isolation type sensor. Except for the voltage sensor 26, the display screen 29, and the external socket 32 in the measurement module 33, the rest of the components are fixedly arranged in the operating rod 1, and the display screen 29 is fixed on the outer side surface of the operating rod 1.
[0034] When the present invention is not in use, under the action of the spring 22, the sliding plate 10 is at a high position. At this time, the lower end of the vertical rod 7 is relatively close to the center line position of the sliding plate 10, and the slider 34 is at the upper end of the inclined guide groove 6. At this time, the transverse blocking portions 8 on all the vertical rods 7 are joined together to form a protective cage 9 covering the outside of the boss 2, and the ends of adjacent transverse blocking portions 8 away from the vertical rod 7 are in contact with each other. When using this test induction voltage measuring device to measure the induction voltage of a circuit, pass a finger through the finger sleeve 17 and press the button 14 connected to the finger sleeve 17 with force. The button 14 drives the second movable block 20 to move towards the first movable block 18. Through the cooperation of the first inclined surface 19 and the second inclined surface 21, the first movable block 18 is driven to move downward. Further, the first movable block 18 drives the pull rod 13 to move downward, and the pull rod 13 drives the sliding plate 10 to move downward to a low position and compress the spring 22 downward. When the sliding plate 10 moves downward, it will pull the vertical rod 7, so that the slider 34 on the vertical rod 7 moves downward along the inclined guide groove 6. At the same time, the vertical rod 7 will move horizontally in the vertical guide groove 5 and gradually move away from the center line of the operating rod 1. At this time, the transverse blocking portions 8 are gradually separated and the protective cage 9 is opened. The transverse blocking portions 8 move together with the vertical rod 7 until the slider 34 enters the second vertical groove 4 and moves downward along the second vertical groove 4. At this time, the transverse blocking portions 8 avoid the boss 2 and gradually approach the upper end of the operating rod 1, so that the boss 2 is exposed. At this time, it is convenient for this test induction voltage measuring device to measure the induction voltage of the circuit. If the test induction voltage measuring device accidentally drops from the hand during operation, at this time, the button 14 loses the pressing of the user. Under the action of the spring 22, the sliding plate 10 moves upward to a high position. At this time, the slider 34 moves upward along the second vertical groove 4 and at the same time the transverse blocking portions 8 also move upward. After the slider 34 moves to the upper end of the second vertical groove 4, it will enter the inclined guide groove 6. Under the action of the spring 22, the slider 34 continues to move upward along the inclined guide groove 6. At this time, the transverse blocking portions 8 gradually approach the center line of the operating rod 1 while rising until they are joined together to form a protective cage 9 that covers the outside of the boss 2 again, so as to realize that when the test induction voltage measuring device drops, the protective cage 9 automatically closes to protect the boss 2 provided with the voltage sensor 26, reducing the possibility of the boss 2 provided with the voltage sensor 26 being impacted, thereby playing an excellent protective role for the voltage sensor 26.
[0035] When the measurement module 33 is working, after the voltage sensor 26 detects the induction voltage in the circuit, it outputs an analog signal. The analog-to-digital converter converts the analog signal into a digital signal and transmits it to the single-chip microcomputer 27. The single-chip microcomputer 27 calculates the magnitude of the actual electromagnetic induction voltage according to the received digital signal, and then saves the actual electromagnetic induction voltage value into the storage unit 28. The single-chip microcomputer 27 also controls the display on the display to show the corresponding voltage value.
[0036] It should be understood that in the claims and the specification of the present invention, all "including..." should be understood in an open sense, that is, it is equivalent in meaning to "at least containing...", rather than in a closed sense, that is, it should not be understood to mean "only containing...".
[0037] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
Claims
1. An induction voltage measuring device for experiments, comprising an operating rod with a hollow structure and a measuring module installed on the operating rod, characterized in that, A boss is fixedly connected to the upper end of the operating rod. At least three first vertical grooves are provided at the upper end of the operating rod and are circumferentially arrayed around the boss. The length direction of the first vertical groove is parallel to the central axis of the operating rod. The cross-section of the first vertical groove is a rectangular structure, and the length direction of the cross-section of the first vertical groove points to the central axis of the operating rod. A second vertical groove is provided on the operating rod on the side away from the central axis of the operating rod. The width of the second vertical groove is greater than the width of the first vertical groove. The first vertical groove and the second vertical groove are communicated and combined to form a vertical guiding groove with a T-shaped cross-section. The upper end of the second vertical groove is lower than the upper end of the first vertical groove. An inclined guiding groove is also provided between the first vertical groove and the second vertical groove. The width of the inclined guiding groove is equal to the width of the second vertical groove, and the lower end of the inclined guiding groove is communicated with the upper end of the second vertical groove. The inclined guiding groove is inclined upward from bottom to top toward the side where the first vertical groove is provided. A vertical rod is provided in the vertical guiding groove. A transverse blocking portion is fixedly connected to the upper end of the vertical rod. The transverse blocking portions on all the vertical rods can be assembled to form a protective cage covering the outside of the boss. A slider that can slide along the inclined guiding groove and the second vertical groove is fixedly provided on the vertical rod. The longitudinal cross-section of the slider is a parallelogram structure. A sliding plate that can only slide along the length direction of the operating rod is further provided in the operating rod. The vertical rod is perpendicular to the sliding plate and is slidably connected between the vertical rod and the sliding plate. The sliding direction between the vertical rod and the sliding plate is parallel to the length direction of the cross-section of the corresponding first vertical groove. A pull rod is vertically and fixedly connected to the lower end of the sliding plate. A key is provided on the operating rod. A linkage mechanism that can drive the pull rod to move longitudinally back and forth is provided between the key and the lower end of the operating rod. A spring that can drive the sliding plate to reset is further provided in the operating rod. The measuring module includes a voltage sensor, and the voltage sensor is fixed on the boss.
2. The induction voltage measuring device for experiments according to claim 1, characterized in that, The linkage mechanism includes a first movable block that is fixed to the lower end of the pull rod and can only slide longitudinally. A first inclined surface is provided on the first movable block. A second movable block that is horizontally slidably provided on the operating rod is fixedly provided on the key. The sliding direction of the second movable block is perpendicular to the sliding direction of the first movable block. A second inclined surface that is always in contact with the first inclined surface is provided on the second movable block. When the second movable block moves toward the first movable block, the first movable block can be driven to slide downward through the cooperation of the second inclined surface and the first inclined surface. When the first movable block slides upward, the second movable block can be driven to slide toward the outside of the operating rod.
3. The induction voltage measuring device for experiments according to claim 2, characterized in that, A finger sleeve is fixedly provided on the key.
4. The induction voltage measuring device for experiments according to claim 2 or 3, characterized in that, A transverse installation groove is provided on the operating rod. The key is slidably provided in the installation groove. A limiting block that prevents the key from detaching from the installation groove is fixedly connected to the key. The side surface of the limiting block protrudes relative to the side surface of the key, and the limiting block is located inside the operating rod.
5. The induction voltage measuring device for experiments according to claim 1, characterized in that, A through groove is provided on each of the two sides of the vertical rod. A sliding groove corresponding to the vertical rod is provided on the sliding plate. The upper and lower side walls of the through groove are respectively attached to the upper and lower side surfaces of the sliding plate. The vertical side walls of the through grooves on both sides of the vertical rod are respectively attached to the left and right side walls of the sliding groove. The vertical rod passes through the sliding groove, and the position where the through groove is provided on the vertical rod is slidably connected to the position where the sliding groove is provided on the sliding plate.
6. The induction voltage measuring device for experiments according to claim 1, characterized in that, The horizontal blocking part is a rod-shaped structure, and the horizontal blocking part is perpendicular to the vertical rod. The horizontal blocking part and the vertical rod form an L-shaped structure. When all the horizontal blocking parts are assembled to form a protective cage, the ends of adjacent horizontal blocking parts away from the vertical rod are in contact with each other.
7. The induction voltage measuring device for experiments according to claim 2, characterized in that, A first fixed plate and a second fixed plate are fixedly arranged in the operating rod. Guide grooves are provided on both the first fixed plate and the second fixed plate. The first fixed plate is located below the sliding plate. The pull rod is slidably sleeved in the guide groove on the first fixed plate. The spring is arranged between the sliding plate and the first fixed plate. The first movable block is slidably sleeved in the guide groove on the second fixed plate.
8. The induction voltage measuring device for experiments according to claim 1, characterized in that, The measurement module further includes a single-chip microcomputer, a storage unit, a display screen, a power conversion circuit, and a storage battery. The power conversion circuit includes a high-voltage end and a low-voltage end. The high-voltage end is electrically connected with an external socket. The voltage sensor, the single-chip microcomputer, the storage unit, the display screen, and the storage battery are all arranged at the low-voltage end. The voltage sensor, the storage unit, the display screen, and the storage battery are respectively electrically connected with the single-chip microcomputer.
9. The induction voltage measuring device for experiments according to claim 8, characterized in that, The single-chip microcomputer is a single-chip microcomputer with an analog-to-digital converter. The single-chip microcomputer is electrically connected with the voltage sensor through the analog-to-digital converter.
10. The induction voltage measuring device for experiments according to claim 9, characterized in that, Except for the voltage sensor, the display screen, and the external socket, the rest of the components in the measurement module are fixedly arranged in the operating rod.
Citation Information
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