A pipe diameter detection device

Abstract

The utility model discloses a pipe diameter detection device, including the casing, a pair of laser range finder, a pair of laser positioner, level, control panel. The upper surface of casing is equipped with operation button and display screen, a pair of laser range finder is set to the both sides of the front end of casing back to, a pair of laser positioner and a pair of laser range finder correspondingly back to set to the both sides of the front end of casing, and laser positioner is cross laser positioner, level is set to the casing, is used to instruct casing level, control panel is located in the inner chamber of casing, is used to obtain the operation of operation button and drive laser positioner and laser range finder work, and the pipe diameter detection result is shown on display screen. The utility model does not need to use motor, screw etc., make its simple and small structure, can realize handheld or fixed in the lifting pole frame, is convenient to carry, is equipped with laser positioner and level, indicates the attitude of detection device, on the basis of realizing portable, improves the accuracy of measurement.

Description

Technical Field

[0001] This utility model relates to the field of urban pipeline detection technology, specifically to a pipe diameter detection device. Background Technology

[0002] As the "capillaries" of urban operations, underground pipe networks (such as sewage pipes and electrical conduits) are critical infrastructure that requires regular inspection and maintenance. Before inspection, it is necessary to quickly measure the pipe diameter to determine the pipe's circumference, facilitating the fabrication of suitable sleeves. Currently, pipe diameter measurement mainly relies on leveling rods or measuring tapes, which are inefficient and inaccurate, easily leading to sleeves being made too large or too small due to inaccurate circumference measurements.

[0003] To this end, the utility model patent with authorization announcement number CN221123324U and title "A Device for Measuring the Diameter of Underground Pipelines" proposes a detection scheme, which uses a rotary motor to drive the upper and lower clamping plates to clamp the pipeline, and then starts a stepper motor to make the rotating disk rotate one revolution, and marks the maximum distance value obtained by the laser rangefinder on the rotating disk as the pipe diameter value.

[0004] Compared to using a leveling rod or measuring tape, this testing method improves the accuracy and efficiency of the operation, but it still has some drawbacks: 1. The equipment is complex, requiring two sets of motors, one of which must be a stepper motor, resulting in higher costs; 2. The upper and lower clamping plates need to be connected by a lead screw, and they need to be clamped at the upper and lower ends of the pipeline during operation, making the operation cumbersome and resulting in a long, bulky, and inconvenient-to-carry equipment; 3. It cannot be guaranteed that the rotating disk is in the correct direction and posture when rotating for measurement. If the rotating disk is tilted, it is easy to lead to low accuracy of the measurement results. Utility Model Content

[0005] The purpose of this invention is to provide a pipe diameter detection device to solve the problems of current pipe diameter detection devices being complex in structure, complicated in use, poor in portability, and insufficient in accuracy.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pipe diameter detection device, comprising:

[0008] The housing has operation buttons and a display screen on its upper surface;

[0009] A pair of laser rangefinders, the pair of laser rangefinders being disposed on opposite sides of the front end of the housing;

[0010] A pair of laser locators, which are arranged opposite to the pair of laser rangefinders on both sides of the front end of the housing, and the laser locators are cross laser locators.

[0011] A level, mounted on the housing, is used to indicate that the housing is level;

[0012] The control board, located inside the housing, is used to receive the operation of the operation buttons and drive the laser positioner and the laser rangefinder to work, and to display the pipe diameter detection results on the display screen.

[0013] Furthermore, the control board is equipped with a microcontroller module and a driver module, a bus module, and a programming module respectively connected to the microcontroller module. The input end of the driver module is connected to the output port of the microcontroller module, and the output end of the driver module drives the laser positioner to work. One end of the bus module is connected to the IC bus of the microcontroller module, and the other end is connected to the data memory and the laser rangefinder.

[0014] Furthermore, the driving module includes resistors R2, R5, and R23, transistor Q3, and MOSFET Q2. Resistor R5 is connected in series between the output port of the microcontroller module and the base of transistor Q3. One end of resistor R2 is connected to the base of transistor Q3, and the other end of resistor R2 is connected in parallel with the emitter of transistor Q3 and then grounded. The source of MOSFET is connected in parallel with one end of resistor R23 and then connected to the power supply. The gate of MOSFET Q2 is connected in parallel with the other end of resistor R23 and then connected to the collector of transistor Q3. The drain of MOSFET Q2 is connected to the power supply pin of the laser positioner.

[0015] Furthermore, the IC bus includes a general-purpose pin, a SMBA pin, an SDA pin, and an SCL pin. The bus module includes resistors R11, R12, R13, and R14. One end of each resistor is connected in parallel and powered, and the other end is connected to the general-purpose pin, the SMBA pin, the SDA pin, and the SCL pin, respectively. The SCL and SDA pins of the data memory and the laser rangefinder are respectively connected to the SDA pin and the SCL pin. The XSHUT pins of the two laser rangefinders are respectively connected to the general-purpose pin and the SMBA pin.

[0016] Furthermore, the operation buttons include three buttons, which are respectively connected to three different input pins of the microcontroller module.

[0017] Furthermore, the microcontroller module is an STM32F microcontroller.

[0018] Furthermore, it also includes a backup battery interface module connected to the microcontroller module.

[0019] Furthermore, it also includes a compass, which is disposed on the upper surface of the housing, the cover of the compass being rotatable relative to the pointer, and the cover being provided with positioning marks.

[0020] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0021] 1. The pipe diameter detection device of this utility model does not require the use of motors, lead screws, etc., making its structure simple and compact. It can be handheld or fixed on a lifting rod frame, making it easy to carry. This utility model is equipped with a cross laser positioner and a level, which can indicate the posture of the detection device. While achieving portability, it can improve the accuracy of measurement.

[0022] 2. This utility model is also equipped with a compass. The cover of the compass is designed to rotate relative to the pointer, and the cover is provided with positioning marks. In this way, when the pipe diameter is large, the orientation of the pipe diameter detection device can be further ensured, and the accuracy of the measurement results can be improved. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a structural schematic diagram of another aspect of the present invention;

[0025] Figure 3 This is a schematic diagram of the control board of this utility model;

[0026] Figure 4 This is a schematic diagram of the control board topology of this utility model;

[0027] Figure 5 This is a schematic diagram of the control board circuit of this utility model;

[0028] Figure 6 This is another structural schematic diagram of the present utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100. Housing; 110. Buttons; 120. Display screen; 200. Laser rangefinder; 300. Laser locator; 400. Level; 500. Control board; 510. Microcontroller module; 520. Driver module; 530. Bus module; 540. Programming module; 550. Backup battery interface module; 560. Reset module; 570. Data storage device; 600. Compass; 610. Cover; 620. Positioning marker. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0032] Additionally, it should be noted that:

[0033] The terms “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “inner,” and “outer” are based on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or element of this utility model must have a specific orientation and therefore should not be construed as a limitation on this utility model.

[0034] When an element is referred to as being "fixed to," "set on," or "contained on" another element, it can be directly on or indirectly on that other element. When an element is referred to as being "connected to," it can be directly connected to or indirectly connected to that other element.

[0035] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Example

[0037] Please refer to Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses a pipe diameter detection device, which includes a housing 100, a pair of laser rangefinders 200, a pair of laser positioners 300, a level 400, and a control board 500.

[0038] The housing 100 includes an upper housing 100 and a lower housing 100. The upper surface of the upper housing 100 is provided with operation buttons 110 and a display screen 120.

[0039] A boss protrudes forward from the front end of the housing 100, and a pair of laser rangefinders 200 are positioned opposite each other on both sides of the boss. A pair of laser locators 300 correspond one-to-one with the pair of laser rangefinders 200, also positioned opposite each other on both sides of the boss, and are used to indicate the detection direction of the laser rangefinders 200. In this embodiment, the laser locator 300 is a crosshair laser locator 300.

[0040] A level 400 is disposed on the housing 100 to indicate that the housing 100 is level. In this embodiment, the level 400 is disposed on the upper surface of the upper housing 100 and located at the boss. The level 400 may be a bubble level.

[0041] The control board 500 is located in the cavity formed by the upper housing 100 and the lower housing 100. It is used to receive the operation of the operation button 110 and drive the laser positioner 300 and the laser rangefinder 200 to work, and display the pipe diameter detection result on the display screen 120.

[0042] Thus, after checking the status of the level 400 and ensuring that the bubble is centered, press the measurement button 110 on the operation button 110. The control board 500 then controls the laser locator 300 and the laser rangefinder 200 to work. The crosshairs emitted by the laser locator 300 on both sides can accurately indicate the measuring direction of the laser rangefinder 200. At the same time, when its crosshairs move up and down, the horizontal and / or vertical lasers on one side can help determine whether there is vertical tilt in the front-back direction. The height difference of the horizontal lasers on both sides can help determine whether there is vertical tilt in the left-right direction. The position difference of the vertical lasers on both sides can help determine whether there is horizontal tilt in the front-back direction. Therefore, through the coordinated action of the level 400 and the laser locator 300, the measurement results are more accurate.

[0043] Please refer to Figure 4 As shown, the control board 500 is equipped with a microcontroller module 510 and a driver module 520, a bus module 530, a programming module 540, a backup battery interface module 550, and a reset module 560, which are respectively connected to the microcontroller module 510.

[0044] The input terminal of the drive module 520 is connected to the output port of the microcontroller module 510, and the output terminal of the drive module 520 drives the laser positioner 300. One end of the bus module 530 is connected to the IC bus of the microcontroller module 510, and the other end is connected to the data memory 570 and the laser rangefinder 200. The backup battery interface module 550 is used to connect to an external power source when necessary. The programming module 540 is used to program and debug the microcontroller, and the reset module 560 is used to reset the microcontroller.

[0045] For details, please refer to Figure 5As shown, the drive module 520 includes resistors R2, R5, R23, transistor Q3, and MOSFET Q2. Resistor R5 is connected in series between the output port of the microcontroller module 510 and the base of transistor Q3. One end of resistor R2 is connected to the base of transistor Q3, and the other end of resistor R2 is connected in parallel with the emitter of transistor Q3 and then grounded. The source of MOSFET is connected in parallel with one end of resistor R23 and then connected to the power supply. The gate of MOSFET Q2 is connected in parallel with the other end of resistor R23 and then connected to the collector of transistor Q3. The drain of MOSFET Q2 is connected to the power supply pin of laser positioner 300.

[0046] Here, transistor Q3 and MOSFET Q2 are multiplexed to form a drive circuit. The purpose is to utilize the relatively small turn-on voltage of transistor Q3 and the high load-carrying capacity of MOSFET Q2. Specifically, transistor Q3 is a current-controlled device, using changes in base current to control changes in collector current. Its base drive voltage only needs to be higher than its dead-zone voltage Ube to turn it on. The dead-zone voltage Ube is typically 0.6V, therefore, the microcontroller module 510 can easily drive transistor Q3. MOSFET Q2, on the other hand, is a voltage-controlled device, using changes in gate voltage to control changes in drain current. Its drive voltage must be higher than its minimum dead-zone voltage Ugs to turn it on, typically requiring 2.5V, while the drive voltage to reach saturation requires approximately 6V-10V. Therefore, a typical 3.3µm microcontroller may not be able to turn on MOSFET Q2. Therefore, here, the microcontroller module 510 controls transistor Q3, and then controls MOSFET Q2 to control the load device.

[0047] The IC bus includes general purpose pins, SMBA pins, SDA pins, and SCL pins. The bus module 530 includes resistors R11, R12, R13, and R14. One end of resistors R11, R12, R13, and R14 is connected in parallel and then powered. The other end is connected to the general purpose pin, SMBA pin, SDA pin, and SCL pin, respectively. The SCL and SDA pins of the data memory 570 and the laser rangefinder 200 are respectively connected to the SDA pin and SCL pin. The XSHUT pins of the two laser rangefinders 200 are respectively connected to the general purpose pin and the SMBA pin.

[0048] The operation button 110 includes three buttons 110, which are respectively connected to three different input pins of the microcontroller module 510. One of the buttons 110 is a measurement button 110.

[0049] Thus, when the measurement button 110 is pressed, the microcontroller's pin PIN25 outputs a high level, transistor Q3 conducts, and the gate of MOSFET Q2 is pulled low. At this time, the 5V power supply is turned on, and the cross laser positioner 300 starts working. Simultaneously, the MCU reads the test distances from the left and right laser rangefinders 200, adds the measured values ​​from the left and right laser rangefinders 200 to the distance between them, and obtains the measurement result. For circular pipelines, moving the pipe diameter detection device up and down allows the largest measured value to be identified as the diameter, thus obtaining the pipe diameter value.

[0050] In this embodiment, the microcontroller module 510 uses an STM32F microcontroller, and the laser rangefinder 200 uses a VL53L0X.

[0051] When the pipeline diameter is large, it may be difficult to determine whether there is a left-right tilt in the front-back direction by observing the positional difference of the longitudinal lasers on both sides. Therefore, please refer to... Figure 6 As shown, in a preferred embodiment, a compass 600 is also included. The compass 600 is disposed on the upper surface of the housing 100. The housing 610 of the compass 600 is rotatable relative to the pointer, and a positioning mark 620 is provided on the housing 610.

[0052] Thus, before starting the operation, the side of the housing 100 can be attached to the pipe wall, and then the cover 610 can be rotated so that the pointer points to the positioning mark 620 on the cover 610. Then, at the measurement position, keep the housing 100 horizontal and rotate the housing 100 in a circle until the pointer points to the positioning mark 620 again. At this time, the orientation adjustment of the pipe diameter detection device is completed to avoid left and right tilting in the front and back direction, and then the subsequent operation can begin.

[0053] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A pipe diameter detection device, characterized in that, include: The housing has operation buttons and a display screen on its upper surface; A pair of laser rangefinders, the pair of laser rangefinders being disposed on opposite sides of the front end of the housing; A pair of laser locators, which are arranged opposite to the pair of laser rangefinders on both sides of the front end of the housing, and the laser locators are cross laser locators. A level, mounted on the housing, is used to indicate that the housing is level; The control board, located inside the housing, is used to receive the operation of the operation buttons and drive the laser positioner and the laser rangefinder to work, and to display the pipe diameter detection results on the display screen.

2. The pipe diameter detection device as described in claim 1, characterized in that: The control board is equipped with a microcontroller module and a driver module, a bus module, and a programming module, which are respectively connected to the microcontroller module. The input terminal of the driver module is connected to the output port of the microcontroller module, and the output terminal of the driver module drives the laser positioner to work. One end of the bus module is connected to the IC bus of the microcontroller module, and the other end is connected to the data storage and the laser rangefinder.

3. The pipe diameter detection device as described in claim 2, characterized in that: The driving module includes resistors R2, R5, and R23, transistor Q3, and MOSFET Q2. Resistor R5 is connected in series between the output port of the microcontroller module and the base of transistor Q3. One end of resistor R2 is connected to the base of transistor Q3, and the other end of resistor R2 is connected in parallel with the emitter of transistor Q3 and then grounded. The source of MOSFET is connected in parallel with one end of resistor R23 and then connected to the power supply. The gate of MOSFET Q2 is connected in parallel with the other end of resistor R23 and then connected to the collector of transistor Q3. The drain of MOSFET Q2 is connected to the power supply pin of the laser positioner.

4. The pipe diameter detection device as described in claim 2, characterized in that: The IC bus includes general-purpose pins, SMBA pins, SDA pins, and SCL pins. The bus module includes resistors R11, R12, R13, and R14. One end of each resistor is connected in parallel and powered, while the other end is connected to the general-purpose pin, SMBA pin, SDA pin, and SCL pin, respectively. The SCL and SDA pins of the data memory and laser rangefinder are respectively connected to the SDA and SCL pins. The XSHUT pins of the two laser rangefinders are respectively connected to the general-purpose pins and SMBA pins.

5. The pipe diameter detection device as described in claim 2, characterized in that: The operation buttons include three buttons, which are respectively connected to three different input pins of the microcontroller module.

6. The pipe diameter detection device according to any one of claims 2-5, characterized in that: The microcontroller module is an STM32F microcontroller.

7. The pipe diameter detection device as described in claim 2, characterized in that: It also includes a backup battery interface module connected to the microcontroller module.

8. The pipe diameter detection device as described in claim 1, characterized in that: It also includes a compass, which is disposed on the upper surface of the housing, the cover of the compass being rotatable relative to the pointer, and the cover being provided with positioning marks.

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