Laser distance measuring device applied to intelligent well lid

Abstract

The utility model provides a laser ranging device applied to an intelligent well lid, which relates to the technical field of detection and comprises a shell, a laser ranging sensor and a cleaning mechanism. The lower surface of the shell is used for being fixedly installed on the inner surface of the intelligent well lid. The laser distance measuring sensor is arranged in the shell, and a probe of the laser distance measuring sensor extends out of the upper surface of the shell; the cleaning mechanism is arranged on the upper surface of the shell, is close to the probe of the laser distance measuring sensor and is used for cleaning the probe of the laser distance measuring sensor. The device can improve the accuracy of monitoring the depth of accumulated water in the hoistway.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, and particularly relates to a laser ranging device applied to a smart manhole cover. Background Art

[0002] In the process of improving the intelligent level of urban construction, the smart manhole cover system is an essential task. With the continuous development of technology, the application of smart manhole covers has greatly improved the renewal and upgrading level of urban infrastructure. Through the application of smart manhole covers, remote monitoring and management can be realized, and the intelligent level of urban infrastructure can be improved. Moreover, the application of smart manhole covers can solve the problem that traditional manhole cover management requires manual inspection and inspection, resulting in high labor costs, improve work efficiency, and reduce labor costs and management costs. At the same time, smart manhole covers can monitor the status of the manhole covers themselves and the conditions inside the wells, so as to timely detect abnormal situations or potential dangers, and reduce risks and losses by taking corresponding measures.

[0003] In existing smart manhole covers applied to sewers or power cable shafts, a ranging function is often required to monitor the liquid level depth in the sewer or the water accumulation depth in the cable shaft, so as to determine whether corresponding measures need to be taken to eliminate potential hazards. For example, a laser ranging sensor is set up. A laser beam is generated by a laser, and the laser beam is emitted onto the liquid surface and then received by the receiver of the sensor after being reflected back. The sensor receiver senses the laser beam of the emission loop and records the received signal. By calculating the time difference between the emission time and the reception time of the laser beam, the distance between the sensor and the liquid surface can be determined. However, due to the complex environment in sewers or cable shafts, there is not only a large amount of dust but also a humid environment, which causes the probe of the ranging sensor to be often blocked by dirt, thus affecting the ranging accuracy and even making it impossible to perform ranging. Summary of the Utility Model

[0004] In view of this, in order to improve the accuracy of monitoring the water accumulation depth in the well, it is necessary to provide a laser ranging device applied to a smart manhole cover for the above deficiencies.

[0005] The utility model provides a laser ranging device applied to a smart manhole cover, which includes: a housing, a laser ranging sensor and a cleaning mechanism;

[0006] The lower surface of the housing is used for fixedly installing on the inner surface of the smart manhole cover;

[0007] The laser ranging sensor is arranged inside the housing, and the probe of the laser ranging sensor extends out of the upper surface of the housing;

[0008] The cleaning mechanism is arranged on the upper surface of the housing and close to the probe of the laser ranging sensor, and is used to clean the probe of the laser ranging sensor.

[0009] Preferably, the housing includes an upper housing and a lower housing. L-shaped notches are provided at one end where the upper housing and the lower housing are installed and connected. A sealing strip is arranged in the U-shaped groove formed after the upper housing and the lower housing are installed.

[0010] Preferably, the cleaning mechanism includes: a first driving motor, a rotating frame and a cleaning component;

[0011] The driving end of the first driving motor is rotationally connected to the center of the rotating frame to drive the rotating frame to rotate;

[0012] The cleaning component is arranged at the end of the rotating frame. When the rotating frame rotates, the probe of the laser ranging sensor is just located on the path of the cleaning component.

[0013] Preferably, the rotating frame is a three-axis rotating frame, and the cleaning component includes: a scraping plate component, a wiping piece and a shielding plate; the scraping plate, the wiping piece and the shielding plate are respectively arranged at the ends of the three axes of the three-axis rotating frame.

[0014] Preferably, the scraping plate component includes a circular scraping plate and a second driving motor. The scraping area of the circular scraping plate is adapted to the size of the probe of the laser ranging sensor; the driving end of the second driving motor is rotationally connected to the circular scraping plate to drive the circular scraping plate to scrape off the dirt on the probe.

[0015] Preferably, a circular protrusion is arranged on the upper surface of the upper housing, and the probe of the laser ranging sensor is arranged at the edge position of the circular protrusion; the driving end of the first driving motor extends out from the center position of the circular protrusion.

[0016] Preferably, a cover body is installed on the circular protrusion by thread fit. A through hole is arranged at the position of the cover body opposite to the probe of the laser ranging sensor; an annular protrusion is arranged at one end of the through hole close to the probe, and the annular protrusion can contact the upper surface of the cleaning component.

[0017] Preferably, the laser ranging device further includes an attitude measurement sensor, and the attitude measurement sensor is arranged inside the housing and is arranged parallel to the intelligent manhole cover.

[0018] Preferably, the laser ranging device further includes a main control module and a communication module. The main control module is electrically connected to the communication module, the laser ranging sensor, the cleaning mechanism and the attitude measurement sensor respectively, and is used to control the start and stop of each module and component, and transmit the collected data to the server through the communication module.

[0019] Preferably, the laser ranging device further includes a power supply for supplying power to each electrical component in the device.

[0020] As can be seen from the above technical solution, the laser ranging device provided by the embodiment of the present invention for a smart manhole cover includes a housing, a laser ranging sensor, and a cleaning mechanism. The lower surface of the housing is used for fixedly installing on the inner surface of the smart manhole cover. The laser ranging sensor is arranged inside the housing, and the probe extends out of the upper surface of the housing, so that the probe of the laser ranging sensor can face the inside of the wellbore, thereby realizing the monitoring of the liquid level in the wellbore. In addition, the cleaning mechanism is arranged on the upper surface of the housing and close to the probe of the laser ranging sensor, and can clean the probe of the laser ranging sensor. Thus, by cleaning the probe of the laser ranging sensor through the cleaning mechanism, it is ensured that the laser ranging sensor will not be affected by the dirty probe when collecting data, and further, the accuracy of data collection can be ensured, that is, the accuracy of monitoring the water depth in the wellbore is improved. Description of the Drawings

[0021] Figure 1 It is a cross-sectional view of a laser ranging device for a smart manhole cover provided by an embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of a housing and a cleaning mechanism provided by an embodiment of the present invention.

[0023] Figure 3 It is a schematic diagram of a cleaning component provided by an embodiment of the present invention.

[0024] Figure 4 It is a schematic diagram of a scraping component provided by an embodiment of the present invention.

[0025] In the drawings: housing 10, upper housing 11, lower housing 12, U-shaped groove 13, circular protrusion 14, laser ranging sensor 20, laser ranging sensor probe 21, cleaning mechanism 30, first driving motor 31, rotating frame 32, cleaning component 33, scraping component 331, circular scraper 3311, second driving motor 3312, wiping member 332, shielding plate 333, cover body 40, attitude measurement sensor 50, main control module 60, power supply 70. Detailed Embodiments

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0027] Please refer to Figures 1-4, the present utility model provides a laser ranging device applied to a smart manhole cover, including: a housing 10, a laser ranging sensor 20, and a cleaning mechanism 30;

[0028] The lower surface of the housing 10 is used for fixedly installing on the inner surface of the smart manhole cover;

[0029] The laser ranging sensor 20 is arranged inside the housing 10, and the probe 21 of the laser ranging sensor extends out of the upper surface of the housing 10;

[0030] The cleaning mechanism 30 is arranged on the upper surface of the housing 10 and is close to the probe 21 of the laser ranging sensor, and is used for cleaning the probe 21 of the laser ranging sensor.

[0031] In this embodiment, the lower surface of the housing 10 is used for fixedly installing on the inner surface of the smart manhole cover, the laser ranging sensor 20 is arranged inside the housing 10, and the probe 21 extends out of the upper surface of the housing 10, so that the probe 21 of the laser ranging sensor can be directly facing the inside of the wellbore, thereby realizing the monitoring of the liquid level in the wellbore. In addition, the cleaning mechanism 30 is arranged on the upper surface of the housing 10 and is close to the probe 21 of the laser ranging sensor, and can clean the probe 21 of the laser ranging sensor. In this way, the cleaning mechanism 30 cleans the probe 21 of the laser ranging sensor, ensuring that the laser ranging sensor 20 is not affected by the dirt on the probe 21 when collecting data, and further ensuring the accuracy of data collection, that is, improving the accuracy of monitoring the water depth in the wellbore.

[0032] For the housing 10, it may specifically include an upper housing 11 and a lower housing 12. L-shaped notches are provided at one end of the upper housing 11 and the lower housing 12 where they are installed and connected. A sealing strip is arranged in the U-shaped groove 13 formed after the upper housing 11 and the lower housing 12 are installed, so as to ensure the sealing effect of the housing 10 and prevent water vapor from entering the inside of the housing 10 through the gap between the upper and lower housings 12 and damaging the electronic components.

[0033] Of course, in order to fix the device on the smart manhole cover, parts such as ear plates can be provided on the lower housing 12, so as to fixedly install the device on the inner surface of the smart manhole cover.

[0034] The cleaning mechanism 30 is arranged on the upper housing 11 of the housing 10. The cleaning mechanism 30 may specifically include: a first driving motor 31, a rotating frame 32, and a cleaning assembly 33;

[0035] The driving end of the first driving motor 31 is rotationally connected to the center of the rotating frame 32 to drive the rotating frame 32 to rotate;

[0036] The cleaning component 33 is arranged at the end of the rotating frame 32. When the rotating frame 32 rotates, the laser ranging sensor probe 21 is just located on the path of the cleaning component 33. Thus, by driving the rotating frame 32 to rotate through the first driving motor 31, the laser ranging sensor probe 21 can be cleaned by the cleaning component 33.

[0037] Furthermore, to ensure the cleaning effect, the rotating frame 32 can be a three-axis rotating frame 32, and the cleaning component 33 can include: a scraping plate component 331, a wiping member 332, and a shielding plate 333; the scraping plate component 331, the wiping member 332, and the shielding plate 333 are respectively arranged at the ends of the three axes of the three-axis rotating frame 32. Thus, before data acquisition needs to be performed through the probe 21, the first driving motor 31 can be used to drive the three-axis rotating frame 32 to rotate, so that the scraping plate component 331 first scrapes the surface of the probe 21, and then the wiping member 332 wipes the surface of the probe 21. Thus, even if there is dirt attached to the probe 21, it can be cleaned off in sequence by the scraping plate component 331 and the wiping member 332, ensuring the cleaning effect of the probe 21. Specifically, the scraping plate component 331 can be a rubber scraping plate, and the wiping member 332 can be a sponge pad, etc., to achieve the cleaning effect while avoiding damage to the probe 21. After the data acquisition is completed, the first driving motor 31 drives the three-axis rotating frame 32 to rotate, so that the shielding plate 333 shields the front end of the probe 21 of the laser ranging sensor 20, protecting the probe 21 and at the same time reducing the attachment of water vapor and dust on the probe 21.

[0038] In one embodiment, to improve the scraping and cleaning effect of the scraping plate component 331, the scraping plate component 331 can include a circular scraping plate 3311 and a second driving motor 3312. The scraping area of the circular scraping plate 3311 is adapted to the size of the laser ranging sensor probe 21; the fixed end of the second driving motor 3312 is fixed at the end of one axis of the three-axis rotating frame 32, and the driving end of the second driving motor 3312 is rotationally connected to the circular scraping plate 3311 to drive the circular scraping plate 3311 to scrape off the dirt on the probe 21. For example, the circular scraping plate 3311 can be fixedly arranged on the lower surface of a circular plate by several rubber plates in a way that they share a vertex. The driving end of the second driving motor 3312 is drivingly connected to the vertex position of the circular scraping plate 3311, thereby driving the circular scraping plate 3311 to rotate and cleaning the laser ranging sensor probe 21 to scrape off dirt such as soil on the probe 21.

[0039] In one embodiment, a circular protrusion 14 is provided on the upper surface of the upper housing 11, and the laser ranging sensor probe 21 is disposed at the edge position of the circular protrusion 14; the driving end of the first driving motor 31 extends from the center position of the circular protrusion 14. In this embodiment, the laser ranging sensor 20 is disposed inside the housing 10, and the detecting end of the probe 21 extends outward from inside the housing 10 to the position of the outer surface of the circular protrusion 14. The first driving motor 31 is disposed inside the housing 10, and the driving end extends outward from the center position of the circular protrusion 14. The center position of the three-axis rotating frame 32 is rotatably connected to the driving end of the first driving motor 31.

[0040] Of course, in order to ensure the sealing between the inside and the outside of the housing 10, both between the first driving motor 31 and the housing 10 and between the probe 21 and the housing 10 can be sealed by potting.

[0041] Further, a cover body 40 is installed on the circular protrusion 14 by screw fit. A through hole 41 is provided at a position on the cover body 40 facing the laser ranging sensor probe 21; an annular protrusion 42 is provided at one end of the through hole 41 close to the probe 21, and the annular protrusion 42 can contact the upper surface of the cleaning assembly 33. In this way, the cover body 40 can protect the cleaning assembly 33, and at the same time, data detection of the probe 21 can be realized through the through hole 41 on the cover body 40. In addition, an annular protrusion 42 is provided at one end of the through hole 41 on the cover body 40 close to the probe 21, and it can contact the upper surface of the cleaning assembly 33. In this way, when data is not being collected, the annular protrusion 42 can contact the upper surface of the shielding plate 333, so that the inside of the cover body 40 is isolated from the outside world, reducing the influence of the external environment on the cleaning assembly 33 and the probe 21 inside the cover body 40.

[0042] In addition, the laser ranging device further includes an attitude measurement sensor 50. The attitude measurement sensor 50 is disposed inside the housing 10 and is arranged parallel to the intelligent manhole cover. In this way, it is possible to monitor whether the manhole cover is tilted or stolen, so as to eliminate potential hazards in a timely manner.

[0043] The laser ranging device further includes a main control module 60 and a communication module. The main control module 60 is electrically connected to the communication module, the laser ranging sensor 20, the cleaning mechanism 30, and the attitude measurement sensor 50 respectively, and is used to control the start and stop of each module and component, and transmit the collected data to the server through the communication module.

[0044] In this embodiment, the main control module 60 is a PCU circuit board, and the control chip can be implemented by an stm32L431 chip. It is connected to each module and component through a serial port and is also connected to the communication module through the serial port to transmit the collected data to the server through the communication module. The main control module 60 is also used to control the cleaning mechanism 30 and the laser ranging sensor 20 to work. For example, when data collection is not required, the cleaning mechanism 30 is controlled to work, and the baffle 333 is blocked at the position of the probe 21, and the laser ranging sensor 20 is in a sleep state. When data collection is required, first, the rotating frame 32 of the cleaning mechanism 30 is rotated by a certain angle, so that the surface of the probe 21 is cleaned by the circular scraping plate 3311 and the wiping member 332 in sequence, and then the laser ranging sensor 20 is awakened for data collection. After the data collection is completed, the rotating frame 32 of the cleaning mechanism 30 is rotated, and the probe 21 is blocked by the baffle 333 again.

[0045] The main control module 60 is also used to receive the manhole cover attitude data collected by the attitude measurement sensor 50 and transmit it to the server through the communication module, so as to give an alarm when it is found that the manhole cover has abnormal vibration, and prevent the manhole cover from being stolen or damaged.

[0046] The communication module can be a 4G communication module, which has a wider and more stable network coverage and a faster transmission speed than the NB-IOT network. In addition, the communication module can also be equipped with an LBS positioning function, and the LBS positioning data can be transmitted to the server at the same time when transmitting data to the server, so as to achieve accurate positioning of the manhole cover.

[0047] In addition, in one embodiment, the device can also include a communication module transmit power adjustment module, which is used to automatically adjust the transmit power of the communication module according to the signal strength. For example, the data is transmitted with the transmit power that can ensure that the server receives the data and has the lowest power consumption. In this way, not only can the transmission success rate in places with weak signals be improved, but also the standby life of the device can be increased.

[0048] Of course, the laser ranging device provided by this solution should also include a power supply 70, which is used to supply power to each electrical component in the device.

[0049] When the present utility model is implemented, the laser ranging device provided by the present utility model and applied to the intelligent manhole cover is installed on the inner surface of the manhole cover, and the probe 21 of the laser ranging sensor faces downward directly into the wellbore. The device adopts a method of automatically waking up at regular intervals for data collection. When the device is in the sleep state, the baffle plate 333 of the cleaning component 33 is located in front of the probe 21, and cooperates with the cover body 40 to isolate the inside of the cover body 40 from the outside of the cover body 40, preventing water vapor, dust, etc. from entering the inside of the cover body 40. When the wake-up time arrives, the main control module 60 controls the first drive motor 31 and the second drive motor 3312 to work, and sequentially cleans the surface of the probe 21 through the circular scraping plate 3311 and the wiping member 332, and then wakes up the laser ranging sensor 20 to collect data. The collected data is uploaded to the server through the 4G communication module. After the data collection is completed, the laser ranging sensor 20 enters the sleep state again. At the same time, the first drive motor 31 is controlled to block the baffle plate 333 in front of the probe 21 again, and then the entire device enters the sleep state again until the next wake-up. During this period, each time it wakes up, the attitude ranging sensor collects the attitude data of the manhole cover and uploads it to the server.

[0050] Of course, in some embodiments, the laser ranging device provided by this solution can also be applied to some other scenarios, such as being set in a public toilet to measure whether there is someone, being set on a trash can to monitor whether the trash can is full, being set in a septic tank to monitor the liquid level height, being set in a parking lot to monitor the parking space status, being set in a factory silo to monitor the remaining status of the silo, etc.

[0051] The modules or units in the device of the embodiment of the present utility model can be combined, divided, and deleted according to actual needs. The above-disclosed is only the preferred embodiment of the present utility model. Of course, the scope of the rights of the present utility model cannot be limited by this. Those of ordinary skill in the art can understand the whole or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A laser distance measuring device applied to a smart manhole cover, characterized in that: include: Housing, laser ranging sensor and cleaning mechanism; The lower surface of the housing is used to be fixedly mounted on the inner surface of the smart manhole cover; The laser distance measuring sensor is arranged inside the shell, and a probe of the laser distance measuring sensor extends out of the upper surface of the shell; The cleaning mechanism is arranged on the upper surface of the shell and is close to the probe of the laser ranging sensor, and is used for cleaning the probe of the laser ranging sensor.

2. The laser distance measuring device for smart manhole cover according to claim 1 is characterized in that: The shell comprises an upper shell and a lower shell. An L-shaped groove is arranged at one end where the upper shell and the lower shell are installed and connected. A sealing strip is arranged in the U-shaped groove formed after the upper shell and the lower shell are installed.

3. The laser distance measuring device for smart manhole cover according to claim 2 is characterized in that: The cleaning mechanism comprises: a first driving motor, a rotating frame and a cleaning assembly; The driving end of the first driving motor is rotatably connected to the center of the rotating frame to drive the rotating frame to rotate; The cleaning component is arranged at the end of the rotating frame, and when the rotating frame rotates, the probe of the laser distance measuring sensor is just located on the path of the cleaning component.

4. The laser distance measuring device for smart manhole cover according to claim 3 is characterized in that: The rotating frame is a three-axis rotating frame, and the cleaning assembly includes: a scraper assembly, a wiping member and a shielding plate; the scraper, the wiping member and the shielding plate are respectively arranged at the ends of the three axes of the three-axis rotating frame.

5. The laser distance measuring device for smart manhole cover according to claim 4 is characterized in that: The scraper assembly includes a circular scraper and a second drive motor. The scraping area of ​​the circular scraper is adapted to the probe size of the laser ranging sensor. The driving end of the second drive motor is rotatably connected to the circular scraper to drive the circular scraper to scrape off dirt on the probe.

6. The laser distance measuring device for smart manhole cover according to claim 3 is characterized in that: A circular protrusion is arranged on the upper surface of the upper shell, and the probe of the laser ranging sensor is arranged at the edge of the circular protrusion; the driving end of the first driving motor extends out from the center of the circular protrusion.

7. The laser distance measuring device for smart manhole cover according to claim 6 is characterized in that: A cover body is installed on the circular protrusion through threaded cooperation, and a through hole is arranged on the cover body at a position facing the probe of the laser ranging sensor; an annular protrusion is arranged at one end of the through hole close to the probe, and the annular protrusion can contact the upper surface of the cleaning component.

8. The laser distance measuring device for smart manhole cover according to claim 1, characterized in that: The laser ranging device also includes a posture measurement sensor, which is arranged inside the shell and parallel to the smart manhole cover.

9. The laser distance measuring device applied to the smart manhole cover according to claim 8 is characterized in that: The laser ranging device also includes a main control module and a communication module. The main control module is electrically connected to the communication module, the laser ranging sensor, the cleaning mechanism and the attitude measurement sensor respectively, and is used to control the start and stop of each module and component, and transmit the collected data to the server through the communication module.

10. The laser distance measuring device applied to the smart manhole cover according to claim 9, characterized in that: The laser distance measuring device also includes a power supply for supplying power to various electrical components in the device.

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