An ultrasonic gas meter module static detection device

Abstract

An ultrasonic gas meter module static detection device, including positioning tool, the positioning tool can realize the seal of ultrasonic gas meter module upper and lower two ends, including ultrasonic gas meter module, the ultrasonic gas meter module includes ultrasonic gas meter shell and transducer module, the transducer module has PCB board and transducer located at the two sides of PCB board, including adapter plate, the adapter plate is connected with PCB board by wire, including main control board, the main control board is connected with adapter plate by wire, and power consumption sampling chip is installed on the main control board, including computer, the computer is connected with main control board by wire, the utility model can detect the sound velocity, gain value and static power consumption value of ultrasonic gas meter module and contrast with the sound velocity, gain value and static power consumption value of qualified ultrasonic gas meter module, to judge whether the ultrasonic gas meter module is qualified, avoid the disassembly of unqualified ultrasonic gas meter subsequently, save maintenance time, and reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic gas meter testing technology, and in particular to a static testing device for ultrasonic gas meter modules. Background Technology

[0002] Before assembly, it's generally impossible to test the static power consumption, sound velocity, and gain of an ultrasonic gas meter module. However, testing static power consumption can determine if there are any faults in the internal circuitry and components of the module. Testing the gain ensures sufficient strength of the ultrasonic signal during transmission, avoiding measurement errors caused by signal attenuation. Testing the sound velocity determines the performance of the transducer within the module. Therefore, testing static power consumption, gain, and sound velocity can screen out substandard ultrasonic gas meter modules before assembly, reducing the need for disassembling defective meters and minimizing waste of rework materials.

[0003] Based on this, a static testing device for ultrasonic gas meter modules is provided. Utility Model Content

[0004] The present invention aims to overcome the defects in the prior art by providing a static testing device for ultrasonic gas meter modules, thereby avoiding the subsequent disassembly of unqualified ultrasonic gas meters and reducing the waste of rework materials for unqualified ultrasonic gas meters, thus saving repair time and reducing maintenance costs.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a static testing device for ultrasonic gas meter modules, including a positioning fixture, wherein the positioning fixture carries a plurality of ultrasonic gas meter modules and can achieve sealing of the upper and lower ends of the ultrasonic gas meter modules.

[0006] The invention includes an ultrasonic gas meter module, which comprises an ultrasonic gas meter housing, a transducer module mounted on the ultrasonic gas meter housing, and a housing covering the transducer module. The transducer module has a PCB board and transducers located on both sides of the PCB board.

[0007] Includes an adapter board, which is connected to the PCB board via wires;

[0008] Includes a main control board, which is connected to an adapter board via wires, and a power consumption sampling chip is installed on the main control board;

[0009] Includes a computer, which is connected to the main control board via a wire.

[0010] In a preferred embodiment of this utility model, the transducer is positioned close to the interior of the ultrasonic gas meter housing, and a sealing ring is provided around the transducer to isolate the interior of the ultrasonic gas meter housing from the external environment.

[0011] As a preferred embodiment of this utility model, the PCB board is provided with a temperature sensor for detecting the external environment.

[0012] As a preferred embodiment of this utility model, the positioning fixture includes a control box, a support frame, a positioning plate, a cylinder, and a sealing assembly. The support frame is fixedly mounted on the control box, and a positioning plate is installed on the top of the control box. The positioning plate has at least four positioning ports inside that can receive and seal the lower end of the ultrasonic gas meter module. A cylinder is installed on the top of the support frame, and a sealing assembly for sealing the upper end of the ultrasonic gas meter module is installed on the cylinder rod.

[0013] As a preferred embodiment of the present invention, the positioning fixture further includes guide rods for guiding the sealing assembly, and a plurality of the guide rods pass through the sealing assembly and are fixedly disposed between the control box and the support frame.

[0014] In a preferred embodiment of this utility model, the sealing assembly includes a mounting plate, a guide plate, and a sealing plate. The mounting plate is fixedly mounted on the cylinder rod of the cylinder. The guide plate is fixedly mounted on the mounting plate and several guide rods pass through the guide plate. The sealing plate is fixedly mounted on the guide plate and has a sealing surface inside.

[0015] As a preferred embodiment of this utility model, the positioning fixture further includes a positioning frame, which is located on the side of the control box away from the positioning plate, and is used to position and fix the adapter plate.

[0016] As a preferred embodiment of this utility model, the positioning frame includes a plurality of hollow studs and bolts located between the control box and the adapter plate. The hollow studs are used to support the adapter plate, and the bolts pass through the adapter plate and the hollow studs in sequence and are locked onto the control box.

[0017] As a preferred embodiment of this utility model, the control box is equipped with a main control board inside, and several buttons for controlling cylinder pressing, emergency stop and reset are installed on the side of the control box.

[0018] In a preferred embodiment of this utility model, the number of adapter boards corresponds to the number of ultrasonic gas meter modules, and the number of main control boards is 1.

[0019] The beneficial effects of this utility model are:

[0020] This invention uses a transducer module and a power consumption sampling chip to acquire values ​​such as transducer spacing, flight time, original input voltage, and final output voltage of an ultrasonic gas meter module. Under the processing of the main control board, values ​​such as sound velocity, gain, and static power consumption of the ultrasonic gas meter module are obtained and transmitted to a computer for display. By comparing these values ​​with those of a qualified ultrasonic gas meter module, it can be determined whether the ultrasonic gas meter module meets the standards. This avoids the need for subsequent disassembly of unqualified ultrasonic gas meters and the waste of rework materials, saving repair time and reducing maintenance costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the positioning tool of this utility model;

[0023] Figure 3 This is a schematic diagram of the installation of the sealing plate of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the ultrasonic gas meter module of this utility model;

[0025] Figure 5 This is a schematic diagram of the transducer module of this utility model;

[0026] Figure 6 This is an installation diagram of the transducer module of this utility model;

[0027] Figure 7 This is a schematic diagram of the operation of the transducer of this utility model;

[0028] The attached diagram shows the following labels: 1. Positioning fixture, 2. Ultrasonic gas meter module, 3. Adapter board, 4. Main control board, 5. Computer, 11. Control box, 12. Support frame, 13. Positioning plate, 14. Cylinder, 15. Sealing assembly, 16. Guide rod, 17. Positioning frame, 18. Button, 21. Ultrasonic gas meter housing, 22. Transducer module, 23. Housing, 41. Power consumption sampling chip, 131. Positioning port, 151. Mounting plate, 152. Guide plate, 153. Sealing plate, 171. Hollow stud, 172. Bolt, 221. PCB board, 222. Transducer, 1531. Sealing surface, 2211. Temperature sensor, 2221. Sealing ring. Detailed Implementation

[0029] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0030] The sound velocity of the ultrasonic gas meter module 2 can be measured using two working transducers 222 and a PCB board 221: The distance L between the two transducers 222 is precisely measured. The upstream transducer 221 emits an ultrasonic signal, and the downstream transducer 221 receives the ultrasonic signal. The flight time T(up) of the ultrasonic signal from the upstream transducer to the downstream transducer is measured using an internal timer on the PCB board 221. The downstream transducer 221 emits an ultrasonic signal, and the upstream transducer 221 receives the ultrasonic signal. The flight time T(down) of the ultrasonic signal from the downstream transducer to the upstream transducer is measured using an internal timer on the PCB board 221. The above data is transmitted to the main control board 4. The main control board 4 calculates the sound velocity using the formula c = 2L / T(down) - T(up) and transmits the sound velocity value to the computer 5 for display, where c is the sound velocity, L is the transducer spacing, T(down) is the downstream propagation time, and T(up) is the upstream propagation time.

[0031] The gain value of the ultrasonic gas meter module 2 can be measured using two working transducers 222 and PCB board 221: the upstream transducer 221 converts the voltage signal into an ultrasonic signal, the downstream transducer 221 converts the ultrasonic signal into a voltage signal, the PCB board 221 samples this voltage signal through an ADC (analog-to-digital converter) to obtain a digital signal, the PCB board 221 amplifies this digital signal through a PGA (programmable gain amplifier), the amplified signal is sampled again through the ADC to obtain the final digital signal, the PCB board 221 transmits the above data to the main control board 4 according to the final output voltage value obtained by the ADC sampling and the voltage value obtained at the original input terminal, the main control board 4 calculates the gain value according to the formula gain value = original input voltage value / final output voltage value, and transmits the gain value to the computer 5 for display.

[0032] The main control board 4 is equipped with a power consumption sampling chip 41. The power supply to the ultrasonic gas meter module 2 is all through this power consumption sampling chip 41. The power consumption sampling chip 41 will detect the power consumption value per second in real time. By dividing the total power consumption value of this time period by this time period, the static power consumption value of the ultrasonic gas meter module 2 can be calculated. This static power consumption value is transmitted to the computer 5 for display.

[0033] By comparing the aforementioned sound velocity, gain value, and static power consumption value with those of a qualified ultrasonic gas meter module 2, it can be determined whether the ultrasonic gas meter module 2 is qualified.

[0034] like Figures 1-7As shown, a static testing device for an ultrasonic gas meter module includes a positioning fixture 1, which internally supports several ultrasonic gas meter modules 2 and can seal the upper and lower ends of the ultrasonic gas meter modules 2; the device includes an ultrasonic gas meter module 2, which includes an ultrasonic gas meter housing 21, a transducer module 22 mounted on the ultrasonic gas meter housing 21, and a housing 23 covering the transducer module 22. The transducer module 22 has a PCB board 221 and transducers 222 located on both sides of the PCB board 221; an adapter board 3 is connected to the PCB board 221 via wires; a main control board 4 is connected to the adapter board 3 via wires, and a power consumption sampling chip 41 is installed on the main control board 4; and a computer 5 is connected to the main control board 4 via wires.

[0035] The transducer 222 is located close to the inside of the ultrasonic gas meter housing 21. A sealing ring 2221 is arranged around the transducer 222 to isolate the inside of the ultrasonic gas meter housing 21 from the external environment. The housing 23 can be opened easily to facilitate the connection of the PCB board 221 with external components.

[0036] The number of adapter boards 3 corresponds to the number of ultrasonic gas meter modules 2, and the number of main control boards 4 is 1.

[0037] Specifically, the positioning fixture 1 seals the upper and lower ends of the ultrasonic gas meter housing 21, and the transducer 222, together with the sealing ring 2221, seals the side of the ultrasonic gas meter housing 21. The transducer 222 in the transducer module 22 can directly contact the inside of the ultrasonic gas meter housing 21. The cooperation between the transducer 222 and the PCB board 221 can obtain the values ​​of transducer spacing, flight time, original input voltage value, and final output voltage value in the ultrasonic gas meter module 2. These values ​​are then transmitted to the main control board 4 through the adapter board 3 for processing to obtain the sound velocity, gain value, and other values ​​of the ultrasonic gas meter module 2. On the other hand, the power consumption sampling chip 41 of the main control board 4 can calculate the static power consumption value of the ultrasonic gas meter module 2. Finally, the main control board 4 transmits the sound velocity, gain value, and static power consumption value of the ultrasonic gas meter module 2 to the computer 5 for display.

[0038] This invention uses the transducer module 22 and power consumption sampling chip 41 to acquire values ​​such as transducer spacing, flight time, original input voltage value, and final output voltage value of the ultrasonic gas meter module. Through processing by the main control board 4, the sound velocity, gain value, and static power consumption value of the ultrasonic gas meter module 2 are transmitted to the computer 5 for display. By comparing the values ​​with those of qualified ultrasonic gas meter modules, it can be determined whether the ultrasonic gas meter module 2 meets the standards, avoiding the subsequent disassembly of unqualified ultrasonic gas meters and the waste of rework materials, thus saving repair time and reducing maintenance costs.

[0039] A temperature sensor 2211 for detecting the external environment is provided on the PCB board 221. The temperature sensor 2211 ensures that the ultrasonic gas meter module 2 performs static detection at a specified temperature, so that the values ​​of sound velocity, gain value and static power consumption value are more accurate.

[0040] like Figures 2-3 As shown, the positioning fixture 1 includes a control box 11, a support frame 12, a positioning plate 13, a cylinder 14, and a sealing assembly 15. The support frame 12 is fixedly mounted on the control box 11. The main control board 4 is installed inside the control box 11. The positioning plate 13 is installed on the top of the control box 11. The positioning plate 13 has at least four positioning ports 131 inside that can receive and seal the lower end of the ultrasonic gas meter module 2. The cylinder 14 is installed on the top of the support frame 12. The sealing assembly 15 for sealing the upper end of the ultrasonic gas meter module 2 is installed on the cylinder rod of the cylinder 14.

[0041] Several buttons 18 are installed on the side of the control box 11 to control the pressing down, emergency stop and reset of the cylinder 14.

[0042] It should be noted that cylinder 14 is controlled by a solenoid valve, and the solenoid valve is powered by an external power source converted to DC before being connected to the solenoid valve. The solenoid valve is connected to button 18 via a wire. Therefore, pressing different buttons 18 can achieve the depressurization, emergency stop, and reset of cylinder 14.

[0043] The positioning fixture 1 also includes guide rods 16 for guiding the sealing assembly 15, and a plurality of the guide rods 16 pass through the sealing assembly 15 and are fixedly disposed between the control box 11 and the support frame 12.

[0044] The sealing assembly 15 includes a mounting plate 151, a guide plate 152, and a sealing plate 153. The mounting plate 151 is fixedly mounted on the cylinder rod of the cylinder 14. The guide plate 152 is fixedly mounted on the mounting plate 151, and several guide rods 16 pass through the guide plate 152. The sealing plate 153 is fixedly mounted on the guide plate 152. The sealing plate 153 has a sealing surface 1531 inside. The shorter length of the mounting plate 151 facilitates the quick installation of the sealing assembly 15 and the cylinder 14. The guide plate 152, located between the mounting plate 151 and the sealing plate 153, passes through the guide rods 16 to determine the direction of movement of the sealing assembly 15, preventing the sealing assembly 15 from tilting after repeated use and thus resulting in poor sealing performance. The sealing surface 1531 of the sealing plate 153 is a re-processed horizontal surface, which gives the sealing plate 153 a better sealing effect. Of course, to further ensure the sealing degree, a sealing strip or sponge can also be added to the sealing surface 1531.

[0045] Specifically, the positioning port 131 realizes the positioning and sealing of the lower end of the ultrasonic gas meter module 2. The cylinder rod of the cylinder 14 extends, so that the sealing component 15 approaches the upper end of the ultrasonic gas meter module 2 under the guidance of the guide rod 16 until the upper end of the ultrasonic gas meter module 2 is sealed, which facilitates the static testing of the ultrasonic gas meter module 2.

[0046] The positioning fixture 1 also includes a positioning frame 17, which is located on the side of the control box 11 away from the positioning plate 13. The positioning frame 17 is used to position and fix the adapter plate 3. The adapter plate 3 can convert the signal interface of the PCB board in the ultrasonic gas meter module 2 into the interface format required by the main control board 4, ensuring that the signal between the two can be correctly transmitted and identified.

[0047] The positioning frame 17 includes several hollow studs 171 and bolts 172 located between the control box 11 and the adapter plate 3. The hollow studs 171 are used to support the adapter plate 3, and the bolts 172 pass through the adapter plate 3 and the hollow studs 171 in sequence and are locked onto the control box 11.

[0048] Specifically, the positioning fixture 1 integrates several ultrasonic gas meter modules 2, several adapter boards 3, main control board 4 and other components together, which facilitates the use of the testing device. Secondly, it can also perform batch testing on multiple ultrasonic gas meter modules 2, thus improving the testing efficiency.

[0049] Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention; therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0050] Although this paper uses numerous reference numerals from the accompanying drawings: 1. Positioning fixture, 2. Ultrasonic gas meter module, 3. Adapter board, 4. Main control board, 5. Computer, 11. Control box, 12. Support frame, 13. Positioning plate, 14. Cylinder, 15. Sealing assembly, 16. Guide rod, 17. Positioning frame, 18. Button, 21. Ultrasonic gas meter housing, 22. Transducer module, 23. Housing, 41. Power consumption sampling chip, 131. Positioning port, 151. Mounting plate, 152. Guide plate, 153. Sealing plate, 171. Hollow stud, 172. Bolt, 221. PCB board, 222. Transducer, 1531. Sealing surface, 2211. Temperature sensor, 2221. Sealing ring, etc., the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A static testing device for an ultrasonic gas meter module, characterized in that, It includes a positioning fixture (1), which carries several ultrasonic gas meter modules (2) and can seal the upper and lower ends of the ultrasonic gas meter modules (2). The ultrasonic gas meter module (2) includes an ultrasonic gas meter housing (21), a transducer module (22) mounted on the ultrasonic gas meter housing (21), and a housing (23) covering the transducer module (22). The transducer module (22) has a PCB board (221) and transducers (222) located on both sides of the PCB board (221). Includes an adapter board (3), which is connected to the PCB board (221) via wires; Includes a main control board (4), which is connected to an adapter board (3) via wires, and a power consumption sampling chip (41) is installed on the main control board (4). Includes a computer (5), which is connected to the main control board (4) via a wire.

2. The ultrasonic gas meter module static testing device according to claim 1, characterized in that, The transducer (222) is located close to the interior of the ultrasonic gas meter housing (21), and a sealing ring (2221) is provided around the transducer (222) to isolate the interior of the ultrasonic gas meter housing (21) from the external environment.

3. The ultrasonic gas meter module static testing device according to claim 1, characterized in that, The PCB board (221) is equipped with a temperature sensor (2211) for detecting the external environment.

4. The ultrasonic gas meter module static testing device according to claim 1, characterized in that, The positioning fixture (1) includes a control box (11), a support frame (12), a positioning plate (13), a cylinder (14), and a sealing component (15). The support frame (12) is fixedly mounted on the control box (11). The top of the control box (11) is equipped with a positioning plate (13). The positioning plate (13) has at least four positioning ports (131) inside that can receive and seal the lower end of the ultrasonic gas meter module (2). The top of the support frame (12) is equipped with a cylinder (14). The cylinder rod of the cylinder (14) is equipped with a sealing component (15) for sealing the upper end of the ultrasonic gas meter module (2).

5. The static testing device for an ultrasonic gas meter module according to claim 4, characterized in that, The positioning fixture (1) also includes guide rods (16) for guiding the sealing assembly (15), and several of the guide rods (16) pass through the sealing assembly (15) and are fixedly disposed between the control box (11) and the support frame (12).

6. The ultrasonic gas meter module static testing device according to claim 4, characterized in that, The sealing assembly (15) includes a mounting plate (151), a guide plate (152), and a sealing plate (153). The mounting plate (151) is fixedly mounted on the cylinder rod of the cylinder (14). The guide plate (152) is fixedly mounted on the mounting plate (151) and several guide rods (16) pass through the guide plate (152). The sealing plate (153) is fixedly mounted on the guide plate (152) and has a sealing surface (1531) inside.

7. The ultrasonic gas meter module static testing device according to claim 4, characterized in that, The positioning fixture (1) also includes a positioning frame (17), which is located on the side of the control box (11) away from the positioning plate (13). The positioning frame (17) is used to position and fix the adapter plate (3).

8. The ultrasonic gas meter module static testing device according to claim 7, characterized in that, The positioning frame (17) includes several hollow studs (171) and bolts (172) located between the control box (11) and the adapter plate (3). The hollow studs (171) are used to support the adapter plate (3), and the bolts (172) pass through the adapter plate (3) and the hollow studs (171) in sequence and are locked on the control box (11).

9. The static testing device for an ultrasonic gas meter module according to claim 4, characterized in that, The control box (11) is equipped with a main control board (4) inside, and several buttons (18) for controlling the cylinder (14) to press down, stop in case of emergency and reset are installed on the side of the control box (11).

10. The static testing device for an ultrasonic gas meter module according to claim 1, characterized in that, The number of adapter boards (3) corresponds to the number of ultrasonic gas meter modules (2), and the number of main control boards (4) is 1.

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