Auxiliary device for calibrating digital sound level meter

Abstract

The utility model relates to the technical field of calibration of metering equipment, in particular to an auxiliary device for calibrating a digital sound level meter, which comprises a fixed seat, a clamp arranged on the fixed seat and used for fixing the digital sound level meter, and an image collector erected above the clamp and used for collecting readings of the digital sound level meter, and the display processing device is connected with the image collector. The digital sound level meter calibration auxiliary device overcomes the defect that an automatic auxiliary device which can replace manual work to record parameters and is convenient to use does not exist in calibration of an existing digital sound level meter, and can well overcome the problem that the digital sound level meter calibration auxiliary device conducts reading collection through the image collector and conducts data statistics and centralized display through the display processing device. And the calibration efficiency and the calibration precision are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of calibration of measuring equipment, and more specifically to an auxiliary device for calibrating a digital sound level meter. Background Art

[0002] The calibration of sound level meters is an important step to ensure the accuracy and reliability of their measurements. At present, the calibration of sound level meters in China still adopts manual calibration. The calibrator is placed in a quiet environment, the sound level meter is fixed in the environment, and the probe of the sound level meter is aligned with the calibrator without moving. The calibrator usually provides a specific reference sound pressure level value. According to the requirements of the sound level meter, the output of the calibrator is set to the corresponding sound pressure level. In the process of calibration, and because the display value of the sound level meter will change many times during the calibration process, the traditional manual calibration process is to observe and record the display parameters by human eyes, manually count the display values ​​of the sound level meter, and then calibrate the sound pressure level value according to the display value. In this process, since there are many types and structures of sound level meters to be calibrated, the accuracy of the parameters that can be displayed by different sound level meters is also different, resulting in a large number of displayed parameters. It is easy to copy errors during the manual calibration and recording process and cannot keep up with the changes in parameters quickly. Therefore, manual calibration is inefficient and error-prone. Therefore, it is very necessary to design and develop an automatic auxiliary device that can replace manual parameter recording and is easy to use in the calibration of digital sound level meters. Utility Model Content

[0003] The purpose of the utility model is to overcome the current lack of an automated auxiliary device that can replace manual parameter recording and is easy to use in the calibration of digital sound level meters, and to provide an auxiliary device for the calibration of digital sound level meters. The utility model uses an image collector to collect readings and a display processing device to perform data statistics and centralized display, which can well overcome this problem and greatly improve the calibration efficiency and calibration accuracy.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] An auxiliary device for calibrating a digital sound level meter comprises a fixing seat, a clamp arranged on the fixing seat and used to fix the digital sound level meter, an image collector arranged above the clamp and used to collect the readings of the digital sound level meter, and a display processing device connected to the image collector.

[0006] The present application can place the digital sound level meter in a fixture for fixing, thereby ensuring that the probe of the sound level meter is aligned with the calibrator and does not move, collects the readings of the digital sound level meter through an image collector, and collects and centrally displays the readings of several changes in the calibration process through a display processing device. The operator no longer needs to keep an eye on the readings and quickly record them, and only needs to process the data centrally displayed by the display processing device after the calibrated values ​​are stable. In the traditional calibration process, manual reading is often prone to errors and omissions due to the large number of displayed parameters and the changes and jumps in the readings. Therefore, the present application collects readings through an image collector and uses a display processing device to perform data statistics and centralized display, which can well overcome this problem and greatly improve the calibration efficiency and calibration accuracy.

[0007] Furthermore, the fixture includes a first baffle fixed on the fixing seat, a second baffle movably connected to the first baffle, and a clamping space is formed between the first baffle and the second baffle. The size of the clamping space can be adjusted by movably connecting the first baffle and the second baffle, thereby forming an adaptive fixing structure, so that even if the sizes of the digital sound level meters are different, they can be fixed in the clamping space.

[0008] Furthermore, the first baffle and the second baffle both include a bottom plate parallel to the surface of the fixed seat, and a side plate intersecting the surface of the fixed seat. The bottom plate of the first baffle is fixed to the surface of the fixed seat, and the side plates of the first baffle and the second baffle are arranged opposite to each other. A first plug-in groove is provided on the bottom plate of the first baffle, and a second plug-in groove is provided on the bottom plate of the second baffle to be aligned with the first plug-in groove.

[0009] It should be noted that the side plates of the first baffle and the second baffle are close to each other, and the angle between the side plates of the first baffle and the second baffle and the bottom plate is less than 90°. In this way, the clamping space can better clamp the digital sound level meter and increase stability.

[0010] Furthermore, the clamping space is formed by the side plates and bottom plates of the first baffle and the second baffle. The width between the side plates of the first baffle and the second baffle is realized by the plug-in slot, which has a simple and effective structure and can ensure good stability and self-adaptation effects.

[0011] Furthermore, the clamp also includes an elastic ring detachably sleeved between the first baffle plate and the second baffle plate.

[0012] Furthermore, the elastic ring is a rubber band.

[0013] The elastic collar can further improve the stability between the first baffle and the second baffle, and prevent the digital sound level meter from angularly moving and changing the probe position when a collision or other interference occurs during the calibration process. The elastic collar can enhance the clamping and stabilizing effect of the fixture.

[0014] Furthermore, the image collector is mounted above the fixed seat through a mounting frame, and the mounting frame includes a beam for fixing the image collector, and support rods respectively arranged at both ends of the beam; the support rod slides on the fixed seat, and the fixed seat is provided with sliding grooves parallel to each other and used for moving the support rods.

[0015] Furthermore, the support rod is movably inserted on the crossbeam, a through hole is opened on the crossbeam for the support rod to move up and down, and a locking bolt is also provided on the crossbeam, one end of which passes through the crossbeam and abuts against the support rod, and the locking bolt is threadedly connected to the crossbeam.

[0016] In this way, the mounting bracket can adjust the position of the image collector relative to the digital sound level meter display screen by moving the support rod on the slide groove, thereby adapting to digital sound level meters of different lengths. The mounting bracket can adjust the height of the image collector relative to the digital sound level meter by moving the support rod in the crossbeam, thereby adapting to digital sound level meters of different thicknesses.

[0017] Furthermore, the image collector includes a plurality of cameras arranged in parallel, and each camera is connected to the display processing device. By setting up a plurality of cameras, the relative position of the camera and the digital sound level meter indication screen can be easily adjusted. At the same time, the plurality of cameras assist in mutual recognition, which can solve the problem of recognition interference caused by reflection, and can accurately recognize the screen indications of digital sound level meters of different models and different positions.

[0018] Furthermore, the display processing device includes a display screen and a processor connected to the display screen, and the processor is connected to the image collector. The processor can be used to process the image information collected by the image collector into numerical information, and the numerical information is centrally displayed on the display screen, so as to facilitate the operator to perform subsequent data analysis and processing.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The present application can place the digital sound level meter in a fixture for fixing, thereby ensuring that the probe of the sound level meter is aligned with the calibrator and does not move, collect the readings of the digital sound level meter through an image collector, and collect and centrally display several changing readings during the calibration process through a display processing device. The operator no longer needs to keep an eye on the readings and record them quickly, but only needs to process the data centrally displayed by the display processing device after the calibrated values ​​are stabilized.

[0021] In the traditional calibration process, since the numerical values ​​of the displayed parameters are often large and the indications will change and jump, manual reading is extremely prone to errors and omissions. Therefore, the present application uses an image acquisition device to collect indications and a display processing device to perform data statistics and centralized display, which can overcome this problem and greatly improve the calibration efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0023] Figure 2 It is a structural schematic diagram of the elastic sleeve in the utility model;

[0024] Figure 3 It is a structural schematic diagram of the mounting frame in the utility model.

[0025] The illustrations are as follows:

[0026] 1-fixed seat, 11-slide slot, 2-clamp, 21-first baffle, 211-first plug-in slot, 22-second baffle, 221-second plug-in slot, 3-image collector, 4-elastic ring, 5-mounting frame, 51-crossbeam, 52-support rod, 53-locking bolt, 100-digital sound level meter. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with specific implementation methods. The drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0028] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] Example 1

[0030] like Figure 1 As shown, an auxiliary device for calibrating a digital sound level meter includes a fixing base 1, a clamp 2 disposed on the fixing base 1 and used to fix the digital sound level meter 100, an image collector 3 mounted above the clamp 2 and used to collect the readings of the digital sound level meter 100, and a display processing device connected to the image collector 3.

[0031] In the traditional calibration process, since the numerical values ​​of the displayed parameters are often large and the indications will change and jump, manual reading is extremely prone to errors and omissions. The present application can place the digital sound level meter 100 in the fixture 2 for fixing, thereby ensuring that the probe of the sound level meter is aligned with the calibrator and does not move, and the digital sound level meter 100 indications are collected by the image collector 3, and the indications of several changes in the calibration process are collected and displayed centrally by the display processing device. The operator no longer needs to stare at the indications and record them quickly, but only needs to process the data displayed centrally by the display processing device after the calibrated values ​​are stable; therefore, the present application collects indications by the image collector 3 and uses the display processing device to perform data statistics and centralized display, which can well overcome this problem and greatly improve the calibration efficiency and calibration accuracy.

[0032] like Figure 2 As shown, the fixture 2 includes a first baffle 21 fixed on the fixing seat 1, and a second baffle 22 movably connected to the first baffle 21, and a clamping space is formed between the first baffle 21 and the second baffle 22. By movably connecting the first baffle 21 and the second baffle 22, the size of the clamping space can be adjusted, thereby forming an adaptive fixing structure, and even if the sizes of the digital sound level meter 100 are different, they can be fixed in the clamping space.

[0033] like Figure 2 As shown, the first baffle plate 21 and the second baffle plate 22 both include a bottom plate parallel to the surface of the fixing base 1, and a side plate intersecting the surface of the fixing base 1. The bottom plate of the first baffle plate 21 is fixed to the surface of the fixing base 1, and the side plates of the first baffle plate 21 and the second baffle plate 22 are arranged opposite to each other. A first plug-in slot 211 is provided on the bottom plate of the first baffle plate 21, and a second plug-in slot 221 is provided on the bottom plate of the second baffle plate 22 to be aligned with the first plug-in slot 211 and plugged into it.

[0034] In this embodiment, the side plates of the first baffle 21 and the second baffle 22 are close to each other, and the angle between the side plates and the bottom plate of the first baffle 21 and the second baffle 22 is less than 90°. In this way, the clamping space can better clamp the digital sound level meter 100 and increase stability.

[0035] In this embodiment, the clamping space is formed by the side plates and bottom plates of the first baffle 21 and the second baffle 22. The width between the side plates of the first baffle 21 and the second baffle 22 is realized by the plug-in slot, which has a simple and effective structure and can ensure good stability and adaptive effects.

[0036] like Figure 1 As shown, the image collector 3 is mounted above the fixing base 1 through the mounting frame 5 .

[0037] like Figure 1As shown, the image collector 3 includes multiple cameras arranged in parallel, and each camera is connected to the display processing device. By setting multiple cameras, the relative position of the camera and the digital sound level meter 100 display screen can be easily adjusted. At the same time, multiple cameras assist each other in recognition, which can solve the problem of recognition interference caused by reflection, and can accurately recognize the screen readings of digital sound level meters 100 of different models and different positions.

[0038] In this embodiment, the display processing device includes a display screen and a processor connected to the display screen, and the processor is connected to the image collector 3. The processor can be used to process the image information collected by the image collector 3 and convert it into numerical information, and display the numerical information on the display screen, so as to facilitate the operator to perform subsequent data analysis and processing.

[0039] Example 2

[0040] This embodiment is similar to Embodiment 1, except that in this embodiment:

[0041] like Figure 3 As shown, the clamp 2 further includes an elastic ring 4 detachably sleeved between the first baffle plate 21 and the second baffle plate 22 .

[0042] In this embodiment, the elastic ring 4 is a rubber band.

[0043] The elastic collar 4 can further improve the stability between the first baffle 21 and the second baffle 22 to prevent the digital sound level meter 100 from angularly moving and changing the probe orientation when a collision or other interference occurs during the calibration process. The elastic collar 4 can enhance the clamping and stabilizing effect of the fixture 2.

[0044] In the traditional calibration process, since the numerical values ​​of the displayed parameters are often large and the indications will change and jump, manual reading is extremely prone to errors and omissions. The present application can place the digital sound level meter 100 in the fixture 2 for fixing, thereby ensuring that the probe of the sound level meter is aligned with the calibrator and does not move, and the digital sound level meter 100 indications are collected by the image collector 3, and the indications of several changes in the calibration process are collected and displayed centrally by the display processing device. The operator no longer needs to stare at the indications and record them quickly, but only needs to process the data displayed centrally by the display processing device after the calibrated values ​​are stable; therefore, the present application collects indications by the image collector 3 and uses the display processing device to perform data statistics and centralized display, which can well overcome this problem and greatly improve the calibration efficiency and calibration accuracy.

[0045] The other structures and principles of this embodiment are the same as those of Embodiment 1.

[0046] Example 3

[0047] This embodiment is similar to Embodiment 2, except that in this embodiment:

[0048] like Figure 3 As shown, the mounting frame 5 includes a crossbeam 51 for fixing the image collector 3, and support rods 52 respectively arranged at both ends of the crossbeam 51; the support rod 52 slides on the fixing seat 1, and the fixing seat 1 is provided with slide grooves 11 which are parallel to each other and used for the movement of the support rod 52.

[0049] like Figure 3 As shown, the support rod 52 is movably inserted on the cross beam 51. A through hole is opened on the cross beam 51 for the support rod 52 to move up and down. The cross beam 51 is also provided with a locking bolt 53 with one end passing through the cross beam 51 and abutting on the support rod 52. The locking bolt 53 is threadedly connected to the cross beam 51.

[0050] In this way, the mounting frame 5 can adjust the position of the image collector 3 relative to the display screen of the digital sound level meter 100 by moving the support rod 52 on the slide groove 11, thereby being suitable for digital sound level meters 100 of different length specifications. The mounting frame 5 can adjust the height of the image collector 3 relative to the digital sound level meter 100 by moving the support rod 52 in the crossbeam 51, thereby being suitable for digital sound level meters 100 of different thickness specifications.

[0051] In the traditional calibration process, since the numerical values ​​of the displayed parameters are often large and the indications will change and jump, manual reading is extremely prone to errors and omissions. The present application can place the digital sound level meter 100 in the fixture 2 for fixing, thereby ensuring that the probe of the sound level meter is aligned with the calibrator and does not move, and the digital sound level meter 100 indications are collected by the image collector 3, and the indications of several changes in the calibration process are collected and displayed centrally by the display processing device. The operator no longer needs to stare at the indications and record them quickly, but only needs to process the data displayed centrally by the display processing device after the calibrated values ​​are stable; therefore, the present application collects indications by the image collector 3 and uses the display processing device to perform data statistics and centralized display, which can well overcome this problem and greatly improve the calibration efficiency and calibration accuracy.

[0052] The other structures and principles of this embodiment are the same as those of Embodiment 2.

[0053] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. An auxiliary device for calibrating a digital sound level meter, characterized in that: The invention comprises a fixing seat (1), a clamp (2) arranged on the fixing seat (1) and used to fix a digital sound level meter (100), an image collector (3) mounted above the clamp (2) and used to collect readings of the digital sound level meter (100), and a display processing device connected to the image collector (3).

2. The auxiliary device for calibrating a digital sound level meter according to claim 1, characterized in that: The clamp (2) comprises a first baffle (21) fixed on the fixing seat (1), and a second baffle (22) movably plugged into the first baffle (21), wherein a clamping space is formed between the first baffle (21) and the second baffle (22).

3. The auxiliary device for calibrating a digital sound level meter according to claim 2, characterized in that: The first baffle plate (21) and the second baffle plate (22) both comprise a bottom plate parallel to the surface of the fixing seat (1), and a side plate intersecting the surface of the fixing seat (1); the bottom plate of the first baffle plate (21) is fixed to the surface of the fixing seat (1); the side plates of the first baffle plate (21) and the second baffle plate (22) are arranged opposite to each other; a first plug-in slot (211) is provided on the bottom plate of the first baffle plate (21); and a second plug-in slot (221) is provided on the bottom plate of the second baffle plate (22) and is plugged in and aligned with the first plug-in slot (211).

4. The auxiliary device for calibrating a digital sound level meter according to claim 3, characterized in that: The clamping space is formed by the side plates and the bottom plate of the first baffle plate (21) and the second baffle plate (22).

5. The auxiliary device for calibrating a digital sound level meter according to claim 2, characterized in that: The clamp (2) further comprises an elastic sleeve ring (4) which is detachably sleeved between the first baffle plate (21) and the second baffle plate (22).

6. The auxiliary device for calibrating a digital sound level meter according to claim 5, characterized in that: The elastic sleeve (4) is a rubber band.

7. The auxiliary device for calibrating a digital sound level meter according to claim 1, characterized in that: The image collector (3) is mounted above the fixed seat (1) via a mounting frame (5); the mounting frame (5) comprises a crossbeam (51) for fixing the image collector (3), and support rods (52) respectively arranged at both ends of the crossbeam (51); the support rods (52) slide on the fixed seat (1), and the fixed seat (1) is provided with slide grooves (11) which are parallel to each other and are used for the movement of the support rods (52).

8. The auxiliary device for calibrating a digital sound level meter according to claim 7, characterized in that: The support rod (52) is movably inserted on the cross beam (51); a through hole is provided on the cross beam (51) for the support rod (52) to move up and down; the cross beam (51) is also provided with a locking bolt (53) with one end passing through the cross beam (51) and abutting against the support rod (52); the locking bolt (53) is threadedly connected to the cross beam (51).

9. The auxiliary device for calibrating a digital sound level meter according to claim 1, characterized in that: The image collector (3) comprises a plurality of cameras arranged in parallel, and each camera is connected to the display processing device.

10. The auxiliary device for calibrating a digital sound level meter according to claim 1, characterized in that: The display processing device comprises a display screen and a processor connected to the display screen, and the processor is connected to the image collector (3).

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