Batch rapid calibration device for sensors

Abstract

The utility model discloses a batch rapid calibration device for sensors. The batch rapid calibration device comprises a main body, a ventilation connecting hose, a circuit assembly and a calibration clamp sleeve, the main body comprises a cover plate, a gas shunting shell and a bottom plate; the top surface of the cover plate is concave downwards to form a circuit assembly groove and a plurality of calibration clamp grooves, and ventilation through holes are formed in the bottoms of the calibration clamp grooves; the middle of the bottom face of the gas distribution shell protrudes upwards to form a boss, and a plurality of ventilation cylinders with through holes formed in the middles are evenly distributed on the top face of the boss along the circumference. The bottom plate is fixedly connected with the gas shunting shell; a through hole is formed in the middle of the bottom plate; the wall of the through hole extends downwards to form an air nozzle; the ventilation connecting hose is connected with the air tap; the circuit assembly comprises a circuit board arranged in the circuit assembly groove and a circuit board cover plate arranged above the circuit board; and the calibration clamp is sleeved in the calibration clamp groove. According to the utility model, batch rapid calibration of a plurality of sensors can be realized at one time, and a plurality of isotropic calibration gas paths are provided, so that calibration results can be processed and transmitted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the gas detection technical field, concretely relates to a sensor batch fast calibration device. BACKGROUND

[0002] The gas detector is a kind of equipment for monitoring the concentration of specific gas in environment, is widely used in industry, environmental monitoring and home safety, and it generally includes display, MCU controller, sensor and installation operation accessories and other components.To ensure the detection accuracy and alarm accuracy of the gas detector, the gas detector needs to be calibrated before leaving factory, and the new production gas detector is calibrated by standard gas one by one.But because the detector realizes batch production, and the current conventional calibration mode is to calibrate the detector by gas one by one manually and then collect calibration data to determine the gas detection accuracy, this method is time-consuming and laborious, and the working efficiency is low. UTILITY MODEL CONTENTS

[0003] The utility model is to solve the problem of low production efficiency caused by single calibration in the calibration process of the gas detection equipment in the prior art, and its purpose is to provide a sensor batch fast calibration device.

[0004] The utility model is realized by the following technical schemes:

[0005] A kind of sensor batch fast calibration device, including main part, the air connection hose being arranged in the lower part of main part and the circuit assembly and calibration fixture cover being arranged in the top of main part;The main part includes cover plate, gas shunt shell and bottom plate sequentially arranged from top to bottom;The top surface of cover plate is concave and forms a circuit assembly groove and multiple calibration fixture grooves, and the bottom of calibration fixture groove forms air through hole;The middle of the bottom surface of gas shunt shell is formed and is concave and forms boss, and its outer wall is uniformly distributed with multiple support legs;Multiple air cylinders with through hole in the middle are uniformly distributed on the top surface of boss along circumference;The bottom plate is fixedly connected with gas shunt shell;The middle of bottom plate forms through hole, and the hole wall extends downward and forms gas nozzle;Air connection hose is connected with gas nozzle;The circuit assembly includes circuit board arranged in the inside of circuit assembly groove and circuit board cover plate arranged above circuit board;The calibration fixture cover is placed in calibration fixture groove, and the middle of the bottom of calibration fixture cover forms central through hole, and central through hole and air through hole of calibration fixture groove are interconnected.

[0006] In the above technical scheme, the circuit assembly groove is arranged in the middle of the top surface of cover plate, and multiple calibration fixture grooves are uniformly distributed along circumference with the circuit assembly groove as center.

[0007] In the above technical scheme, multiple circuit board supports are uniformly distributed along the groove wall of circuit assembly groove;The outer bottom surface of calibration fixture groove forms limiting ring.

[0008] In the technical scheme, the connecting ribs are arranged between the outer walls of the circuit component groove and the calibration fixture groove, between the outer walls of adjacent calibration fixture grooves and between the outer walls of the calibration fixture groove and the cover plate.

[0009] In the technical scheme, the outer walls of the gas distribution shell are evenly provided with a plurality of support legs; the length of the support legs is greater than the height of the gas distribution shell, and the top of the support legs is flush with the gas distribution shell; the horizontal position of the bottom surface of the support legs is lower than the horizontal position of the bottom surface of the gas nozzle in the middle of the bottom plate.

[0010] In the technical scheme, the bottom surface of the gas distribution shell forms a bottom plate groove, and a groove is formed on one side of the groove bottom close to the boss; the sealing ring is arranged in the groove.

[0011] In the technical scheme, the air cylinder is inserted into the limiting ring, and the through hole of the air cylinder is in communication with the air passage hole, and a rubber sealing gasket is arranged between the air cylinder and the air passage hole.

[0012] In the technical scheme, the bottom plate is embedded in the bottom plate groove.

[0013] In the technical scheme, a data output terminal hole and a plurality of sensor terminal holes are formed on the circuit board cover plate; the data output terminal hole is formed in the middle of the circuit board cover plate, and the plurality of sensor terminal holes are evenly distributed along the circumference with the data output terminal hole as the center; the data line of the circuit board extends from the data output terminal hole.

[0014] In the technical scheme, the inner wall of the calibration fixture sleeve forms a vertically arranged V-shaped groove; the included angle between the two side walls of the V-shaped groove is 60°.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a kind of sensor batch rapid calibration device in safety monitoring early warning gas detector, realize disposable multiple sensor batch rapid calibration, with multiway isotropic calibration gas path, can handle, transmission calibration result.

[0017] The utility model sensor batch rapid calibration device has power supply, sensor calibration signal processing and transmission function, can carry out the calibration work of multiple sensors at a time, and calibration data is transmitted to host computer to record and qualified determination of calibration result, greatly improve the calibration efficiency of detector;The calibration slot quantity of the utility model sensor batch rapid calibration device is expanded according to the number of sensors required to be calibrated at a time, and the shape of calibration fixture sleeve can also be customized according to different sensor appearance, and a set of calibration device main part can meet the calibration needs of different calibration quantity and different sensors, effectively reduce the procurement cost of calibration tooling, improve production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the utility model;

[0019] Figure 2 is a sectional view of the utility model;

[0020] Figure 3 is a disassembled structural schematic diagram of the utility model;

[0021] Figure 4 is a top view of the cover plate in the utility model;

[0022] Figure 5 is a bottom view of the cover plate in the utility model;

[0023] Figure 6 is a top view of the gas distribution shell in the utility model;

[0024] Figure 7 is a bottom view of the gas distribution shell in the utility model;

[0025] Figure 8 is a partial structural schematic diagram of the bottom plate in the utility model;

[0026] Figure 9 is a structural schematic diagram of the circuit board cover plate in the utility model;

[0027] Figure 10 is a structural schematic diagram of the calibration fixture sleeve in the utility model.

[0028] Among them:

[0029] 1, main body; 11, cover plate; 111, circuit assembly groove; 112, calibration fixture groove; 113, circuit board support; 114, air passage hole; 115, connecting rib; 116, limiting ring; 12, gas distribution shell; 121, boss; 122, support leg; 123, air cylinder; 124, reinforcing rib; 125, groove; 126, wing rib; 127, bottom plate groove 13, bottom plate; 131, air nozzle; 14, sealing ring;

[0030] 2, air connection hose;

[0031] 3, circuit assembly; 31, circuit board cover plate; 311, data export terminal hole; 312, sensor terminal hole; 32, circuit board;

[0032] 4, calibration fixture sleeve; 41, center through hole; 42, V-shaped groove;

[0033] 5, screw.

[0034] For those skilled in the art, other related drawings can be obtained according to the above drawings without creative labor. DETAILED DESCRIPTION

[0035] In order to make the person skilled in the art better understand the technical scheme of the utility model, the technical scheme of the utility model will be further explained by specific embodiments in combination with the drawings of the specification.

[0036] As Figures 1-10 shown, a sensor batch rapid calibration device, including main body 1, set up in the main body 1 below's ventilation connection hose 2 and set up in the main body 1 top's circuit assembly 3 and calibration fixture cover 4

[0037] The main body 1 is cylindrical, it includes from top to bottom in proper order cover plate 11, gas shunt shell 12 and bottom plate 13;

[0038] The cover plate 11 is the cylinder type structure of bottom open, its top surface is concave and forms a circuit assembly groove 111 and multiple calibration fixture grooves 112, circuit assembly groove 111 is arranged in the middle of top surface, multiple calibration fixture grooves 112 are evenly distributed along the circumference with circuit assembly groove 111 as the center;The circuit assembly groove 111 is circular groove, and multiple circuit board supports 113 are evenly distributed along its groove wall;The calibration fixture groove 112 is circular groove, and the groove bottom forms a ventilation through hole 114;The outer bottom surface of calibration fixture groove 112 forms a limiting ring 116;The groove outer wall between circuit assembly groove 111 and calibration fixture groove 112, the groove outer wall between adjacent calibration fixture grooves 112 and the inner wall between calibration fixture groove 112 and cover plate 11 are all provided with connecting ribs 115;

[0039] In the embodiment, the calibration fixture groove 112 is provided with eight, and the groove body diameter of calibration fixture groove 112 is 70mm, and the circumferential interval is 45°;The diameter of ventilation through hole 114 is 9mm;

[0040] The gas distribution shell 12 is a top-opened cylindrical structure, the bottom surface of which is centrally upwardly protruded to form a boss 121, and the outer wall of which is uniformly provided with a plurality of support legs 122; the bottom surface of the gas distribution shell 12 is formed with a bottom plate recess 127, the groove bottom of the bottom plate recess 127 is formed with a groove 125 near one side of the boss 121; a sealing ring 14 is arranged in the groove 125; a plurality of gas passage cylinders 123 with through holes formed in the middle are uniformly distributed on the top surface of the boss 121, the gas passage cylinders 123 are inserted into the limiting ring 116, the through holes of the gas passage cylinders 123 are communicated with the gas passage holes 114, and rubber sealing gaskets are arranged between the gas passage cylinders 123 and the gas passage holes 114, and the sealing is realized by pressing between the cover plate 11 and the gas distribution shell 12; a plurality of reinforcing ribs 124 are symmetrically arranged outside the gas passage cylinders 123; the bottom surface of the boss 121 is formed with a wing rib 126; the length of the support leg 122 is greater than the height of the gas distribution shell 12, and the top of the support leg 122 is flush with the gas distribution shell 12; the horizontal position of the bottom surface of the support leg 122 is lower than the horizontal position of the bottom surface of the gas nozzle 131 in the middle of the bottom plate 13;

[0041] The bottom plate 13 is embedded in the bottom plate recess 127, and is fixedly connected with the gas distribution shell 12 through a plurality of screws 5 uniformly distributed in the circumference; the bottom plate 13 is formed with a through hole in the middle, and the hole wall of the through hole extends downward to form a gas nozzle 131; the gas passage connecting hose 2 is connected with the gas nozzle 131; the top surface of the bottom plate 13 is provided with a plurality of bottom plate wing ribs in the radial and circumferential directions; the number of the gas passage cylinders 123 is consistent with the number of the calibration clamp groove 112; in this embodiment, eight gas passage cylinders 123 are arranged; the cross-sectional diameter of the groove 125 is 1.8 mm;

[0042] In the utility model, the sealing between the gas distribution shell 12 and the bottom plate 13 is realized through the sealing ring 14, the space between the two forms a gas distribution cabin, the whole gas distribution cabin is a rotationally symmetrical structure, and after the calibration gas is introduced from the lower central hole, the calibration gas is uniformly distributed to each calibration groove, and the isotropy of the gas calibration is ensured;

[0043] The circuit assembly 3 comprises a circuit board 32 arranged in the circuit assembly groove 111 and a circuit board cover plate 31 arranged above the circuit board 32; the circuit board cover plate 31 is buckled on the circuit assembly groove 111, and is fixedly connected with the cover plate 11 through screws;

[0044] The circuit board cover plate 31 is formed with one data output terminal hole 311 and a plurality of sensor terminal holes 312, the data output terminal hole 311 is formed in the middle of the circuit board cover plate 31, and the plurality of sensor terminal holes 312 are uniformly distributed along the circumference with the data output terminal hole 311 as the center; the data line of the circuit board 32 extends out of the data output terminal hole 311; the circuit board 32 realizes the power supply of the detector, the collection, processing and transmission of the calibration data;

[0045] The circuit board 32 is conventionally designed in the art, and can adopt a Kedite KDT7606ADC-006 (AD7606) 8-channel 200K sampling ADC module or any module with similar functions;

[0046] The calibration fixture sleeve 4 is a cylindrical structure with an open top, the outer dimension of which matches the calibration fixture groove 112, and the inner recess shape is set according to the shape of the probe head shell; a center through hole 41 is formed in the middle of the bottom of the calibration fixture sleeve 4, and the center through hole 41 and the ventilation through hole 114 of the calibration fixture groove 112 are in communication with each other; the inner wall of the calibration fixture sleeve 4 forms a vertically arranged V-shaped groove 42;

[0047] The number of the calibration fixture sleeve 4 is consistent with that of the calibration fixture groove 112,

[0048] In the embodiment, the calibration fixture sleeve 4 is made of soft rubber material, the outer dimension of which is 70mm, the diameter of the center through hole 41 in the bottom is 9mm, the depth of the V-shaped groove 42 is 3mm, and the included angle between the two groove walls of the V-shaped groove 42 is 60°.

[0049] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can be explicitly or implicitly included one or more. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0050] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0051] The applicant declares that the above description is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and it should be understood by those skilled in the art that any changes or replacements within the technical scope disclosed by the present application can be easily thought out by any person skilled in the art, and all of them fall within the protection scope and disclosure scope of the present application.

Claims

1. A sensor batch rapid calibration device, characterized by: The utility model provides a kind of gas sampling device, including main body (1), the vent connecting hose (2) being arranged in the lower of main body (1) and the circuit assembly (3) and calibration fixture sleeve (4) being arranged in the top of main body (1);The main body (1) includes cover plate (11), gas shunt shell (12) and bottom plate (13) sequentially arranged from top to bottom;The top surface of cover plate (11) is concave and forms a circuit assembly groove (111) and multiple calibration fixture grooves (112), and the groove bottom of calibration fixture groove (112) forms vent through hole (114);The middle of the bottom surface of gas shunt shell (12) is raised and forms boss (121), and the top surface of boss (121) is evenly distributed with multiple vent cylinders (123) of vent through hole in the periphery;The bottom plate (13) is fixedly connected with gas shunt shell (12);The middle of bottom plate (13) forms through hole, and the hole wall extends downward and forms gas nozzle (131);Vent connecting hose (2) is connected with gas nozzle (131);The circuit assembly (3) includes circuit board (32) arranged in the inside of circuit assembly groove (111) and circuit board cover plate (31) arranged above circuit board (32);The calibration fixture sleeve (4) is placed in calibration fixture groove (112), and the middle of the bottom of calibration fixture sleeve (4) forms center through hole (41), and center through hole (41) is communicated with vent through hole (114) of calibration fixture groove (112).

2. The apparatus of claim 1, wherein: The circuit assembly groove (111) is arranged in the middle of the top surface of cover plate (11), and multiple calibration fixture grooves (112) are evenly distributed in the periphery with the circuit assembly groove (111) as center.

3. The apparatus of claim 1, wherein: The circuit assembly groove (111) is evenly distributed with multiple circuit board supports (113) along the groove wall thereof;The outer bottom surface of calibration fixture groove (112) forms limiting ring (116).

4. The apparatus of claim 1, wherein: Connecting ribs (115) are arranged between the groove outer walls of circuit assembly groove (111) and calibration fixture groove (112), between the groove outer walls of adjacent calibration fixture grooves (112) and between calibration fixture groove (112) and the inner wall of cover plate (11).

5. The apparatus of claim 1, wherein: The outer wall of gas shunt shell (12) is evenly distributed with multiple support legs (122);The length of support leg (122) is greater than the height of gas shunt shell (12), and the top of support leg (122) is flush with gas shunt shell (12);The horizontal position of the bottom surface of support leg (122) is lower than the horizontal position of the bottom surface of gas nozzle (131) in the middle of bottom plate (13).

6. The apparatus of claim 1, wherein: The bottom surface of gas shunt shell (12) forms bottom plate groove (127), and the groove bottom of bottom plate groove (127) forms groove (125) close to one side of boss (121);Sealing ring (14) is arranged in groove (125).

7. The apparatus of claim 1, wherein: The vent cylinder (123) is inserted into limiting ring (116), and the through hole of vent cylinder (123) is communicated with vent through hole (114), and rubber sealing gasket is arranged between vent cylinder (123) and vent through hole (114).

8. The apparatus of claim 1, wherein: The bottom plate (13) is embedded in bottom plate groove (127).

9. The apparatus of claim 1, wherein: The circuit board cover plate (31) is formed with a data export terminal hole (311) and a plurality of sensor terminal holes (312), the data export terminal hole (311) is formed in the middle of the circuit board cover plate (31), and the plurality of sensor terminal holes (312) are uniformly distributed along the circumference with the data export terminal hole (311) as the center; the data line of the circuit board (32) extends from the data export terminal hole (311).

10. The apparatus of claim 1, wherein: The inner wall of the calibration clamp sleeve (4) is formed with a vertically arranged V-shaped groove (42); the included angle between the two side groove walls of the V-shaped groove (42) is 60°.

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