CN110940398A - Pulse signal detection system of flow sensor - Google Patents

Abstract

The invention discloses a pulse signal detection system of a flow sensor, which comprises a box body, a single-chip microcomputer control panel, a control switch module, a quality indication module and a water pumping module, wherein the single-chip microcomputer control panel, the control switch module, the quality indication module and the water pumping module are arranged on the box body; the positioning mechanism fixes the flow sensor to form a section of detection pipeline, a water inlet of the detection pipeline is connected with the water pumping module through a water pumping pipeline, and the water collecting box can receive water discharged from a water outlet of the detection pipeline; the control switch module, the quality indication module, the water pumping module and the weighing module are all electrically connected with the single-chip microcomputer control panel. The pulse signal detection system provided by the invention can be used for simultaneously detecting a plurality of flow sensors and continuously testing the flow sensors, and has the advantages of high detection accuracy and high detection efficiency.

Description

Pulse signal detection system of flow sensor

Technical Field

The invention relates to the field of quality detection of flow sensors, in particular to a pulse signal detection system of a flow sensor.

Background

The quality qualification that adopts PLC controller to carry out pulse signal to flow sensor in the existing market mostly detects, because the unable external interference of filtering of PLC controller has the interference will influence the product signal, leads to detecting the flow inaccurate, and whole circuit wiring is complicated moreover, and the cost is expensive.

And the existing flow sensor pulse signal detection device has a complex detection flow, can only carry out single test on products, and has low detection efficiency and delays the production progress.

It is seen that improvements and enhancements to the prior art are needed.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a pulse signal detection system of a flow sensor, which aims to test a plurality of flow sensors simultaneously and improve the detection efficiency and the detection accuracy.

In order to achieve the purpose, the invention adopts the following technical scheme:

a pulse signal detection system of a flow sensor comprises a box body, a single chip microcomputer control panel, a control switch module, a quality indication module and a water pumping module which are arranged on the box body, a plurality of groups of positioning mechanisms, a water collecting box and a weighing module for weighing the water collecting box and processing weighing data, wherein the plurality of groups of positioning mechanisms, the water collecting box and the weighing module are arranged on the box body; the positioning mechanism fixes the flow sensor to form a section of detection pipeline, a water inlet of the detection pipeline is connected with the water pumping module through a water pumping pipeline, and the water collecting box can receive water discharged from a water outlet of the detection pipeline; the control switch module, the quality indication module, the water pumping module and the weighing module are all electrically connected with the single-chip microcomputer control panel.

Every group positioning mechanism is including distributing water drainage seat, positioning seat, the cylinder that sets up on the box outer wall in proper order, and the tailpiece of the piston rod portion of this cylinder is equipped with into water the seat, be equipped with first water inlet and first delivery port on the seat of intaking, be equipped with second water inlet and second delivery port on the water drainage seat, flow sensor installs on the positioning seat, the cylinder is used for driving into water the seat and removes towards flow sensor direction, makes the first delivery port on the seat of intaking and advances water piping connection on the flow sensor, flow sensor's outlet pipe is connected with the second water inlet of water drainage seat.

The second delivery port of the water drainage seat is connected with a water drainage pipe, the first water inlet of the water inlet seat is connected with the water pumping module through the water pumping pipeline, and the first water outlet of the water inlet seat and the second water inlet of the water drainage seat are respectively provided with a sealing ring.

The water pumping module comprises a water tank and a plurality of water pumps, each water pump is connected with the water tank at the water inlet end, the outlet end of each water pump is connected with a corresponding first water inlet through a water pumping pipeline, and the control end of each water pump is electrically connected with the single-chip microcomputer control panel.

The weighing module comprises a weighing seat, a weighing sensor arranged on the weighing seat and a weighing data processing submodule arranged on the singlechip.

The water collecting box is provided with an upper opening, the box body is provided with a drainage cavity, the weighing seat is arranged above the drainage cavity through the support plate, the bottom of the water collecting box is provided with a rotating shaft, two sides of the water collecting box are respectively and oppositely provided with a bearing seat, and two ends of the rotating shaft are respectively and rotatably connected with the two bearing seats.

The pulse signal detection system of the flow sensor further comprises a water pouring driving cylinder for pushing the water collecting box to pour and a pneumatic switch pneumatically connected with the water pouring driving cylinder.

The quality indication module comprises a display screen, and the display screen is electrically connected with the single-chip microcomputer control panel.

The quality indicating module also comprises a qualified product indicating lamp and a unqualified product alarming indicating lamp.

The control switch module comprises a start key and a stop key.

Has the advantages that:

compared with the prior art, the pulse signal detection system of the flow sensor has the advantages that the singlechip control panel is adopted as the controller, so that the external interference resistance is better, and the accuracy of finished product detection is improved. In addition, a plurality of test stations are provided, a plurality of flow sensors can be automatically and simultaneously detected, the detection efficiency is greatly improved, and the automation degree of the equipment is high.

Drawings

Fig. 1 is a schematic structural diagram of a pulse signal detection system of a flow sensor according to the present invention.

Fig. 2 is a front view of a positioning mechanism in a pulse signal detection system of a flow sensor provided by the present invention.

Fig. 3 is an assembly view of a water collection box in the pulse signal detection system of the flow sensor according to the present invention.

Detailed Description

The present invention provides a pulse signal detection system of a flow sensor, and in order to make the objects, technical solutions, and effects of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.

Referring to fig. 1-3, the present invention provides a pulse signal detection system for a flow sensor, which includes a box body 1, a single chip microcomputer control panel 2, a control switch module 3, a quality indication module 4, and a water pumping module 5, which are arranged on the box body 1, a plurality of groups of positioning mechanisms 6, a water collection box 7, and a weighing module 8 for weighing the water collection box and processing weighing data, which are arranged on the box body; the positioning mechanism 6 fixes the flow sensor to form a section of detection pipeline, a water inlet of the detection pipeline is connected with the water pumping module 5 through a water pumping pipeline 53, and the water collecting box 7 can receive water discharged from a water outlet of the detection pipeline; the control switch module 3, the quality indicating module 4, the water pumping module 5 and the weighing module 8 are all electrically connected with the singlechip control panel.

Because the single chip microcomputer control panel is adopted to detect the pulse signals, a person skilled in the art can arrange anti-interference components (such as capacitors, inductors and the like) on the single chip microcomputer control panel, better filter the external interference to the outside, and avoid the interference source from influencing the finished product pulse signals, which results in inaccurate finished product detection. In addition, the single chip microcomputer control panel has the advantages of easiness in control, simple structure and low cost.

A group of positioning mechanisms 6, a water collecting box 7 and a weighing module 8 are combined to form a testing station, and in this embodiment, 4 testing stations are provided, but the number of the testing stations is not limited in the present invention, and different numbers of testing stations are also within the protection scope of the present invention. During operation, the workman places flow sensor A on positioning mechanism 6, then start control switch module 3, make positioning mechanism 6 fix a position flow sensor A completely, single chip microcomputer control panel 2 control module 5 that draws water stops work after carrying out the short time (for example 3 seconds) to the detection pipeline, ensure the air in the detection pipeline and arrange completely, there is rivers to flow into water-collecting box 7 from the delivery port of detection pipeline at this in-process, weighing module 8 record this time point water-collecting box and hold the first total weight of water in the water-collecting box this moment. Then, the water pumping module 5 is started again to start the formal water pumping test, when the flow sensor a works, the water flow pushes the impeller in the flow sensor a to rotate, so that the flow sensor sends out a pulse signal, for example, when the impeller of the flow sensor rotates one circle to flow one gram of water, one pulse signal is sent out after one circle rotation, then 100 pulse signals represent that the weight of the flowing water is 100 grams, and the 100 grams of water flow is the water flow of the pulse number meter. The water pumping amount is determined by a pulse number meter set by the single chip microcomputer control panel 2 in a formal test, when the single chip microcomputer receives that the number of pulses sent by the flow sensor reaches the set number of pulses (the number of pulses is preferably set to be more than 100 in order to ensure the detection accuracy), the water pumping mechanism 5 is controlled to stop pumping water, the weighing module 8 records the time point and the second total weight of the water collecting box and the water contained in the water collecting box, the water weight in the formal test is the second total weight-the first total weight, if the water consumption in the formal test is within the set qualified water flow weight range, the water consumption in the formal test can be judged to be qualified, otherwise, the water consumption in the formal test is judged to be unqualified, and the single chip microcomputer control panel 2 feeds the finished product test judgment result back to. And finally, disassembling the flow sensor A, and replacing a new flow sensor for detection. The water storage capacity of the water collection box is generally designed to be full after 5 times of detection. Therefore, the pulse signal detection system provided by the invention can continuously test the flow sensor, does not need to pour water in the water collecting box once detection is carried out, and ensures that the detection efficiency is improved.

Specifically, referring to fig. 1 and 2, each group of positioning mechanisms 6 includes a water drainage seat 61, a positioning seat 62, and an air cylinder 63, which are sequentially disposed on an outer wall of the box body, a water inlet seat 64 is disposed at an end of a piston rod of the air cylinder, the water inlet seat is provided with a first water inlet 65 and a first water outlet 66, the water drainage seat 61 is provided with a second water inlet 67 and a second water outlet 68, the flow sensor a is mounted on the positioning seat 62, the air cylinder 63 is configured to drive the water inlet seat 64 to move toward the flow sensor, so that the first water outlet 66 on the water inlet seat 64 is connected to a water inlet pipe a1 on the flow sensor a, and a water outlet pipe a2 of the flow sensor is connected to the second water inlet. During operation, install flow sensor A on positioning seat 62 to insert flow sensor's outlet pipe in the second water inlet 67 of water drainage seat, realize flow sensor's radial positioning, then cylinder 63 drive intake seat 64 moves towards flow sensor A direction, makes into flow sensor's inlet tube A1 and inserts into the first delivery port 66 of water inlet seat, thereby forms the test tube, the water inlet of test tube is the first water inlet 65 of water inlet seat promptly, and the delivery port of test tube is the second delivery port 68 of water drainage seat promptly.

Preferably, referring to fig. 2, the second water outlet 68 of the water discharging seat 61 is connected to a water discharging pipe 69, the first water inlet 65 of the water inlet seat is connected to the water pumping module 5 through the water pumping pipe 53, and the first water outlet 66 of the water inlet seat and the second water inlet 67 of the water discharging seat are both provided with a sealing ring 60 to ensure the sealing performance of the pipe connection. By providing the drain pipe 69, it is ensured that all water used in the detection process is drained into the water collecting box 7, and the detection misalignment caused by leakage is avoided.

Specifically, referring to fig. 1, the water pumping module 5 includes a water tank 51 and a plurality of water pumps 52, a water inlet end of each water pump 52 is connected to the water tank 51, an outlet end of each water pump is connected to a corresponding first water inlet 65 through the water pumping pipe, and a control end of each water pump is electrically connected to the single chip microcomputer control panel 2. Each water pump corresponds to a detection station, and when the single-chip microcomputer control panel receives the pulse number sent by the flow sensor and reaches the set pulse number, all the water pumps are controlled to stop pumping water, so that the control is accurate and reliable.

Preferably, the weighing module 8 comprises a weighing seat 81, a weighing sensor 82 arranged on the weighing seat and a weighing data processing submodule 83 arranged on the single chip microcomputer. The weighing data processing submodule is responsible for calculating the first total weight and the second total weight, and then calculating the difference between the first total weight and the second total weight to obtain the water consumption of the formal test. Finally, the judgment control code in the single chip microcomputer control panel compares the water consumption of the formal test with the set qualified water flow range for judgment. The weighing data processing submodule is specifically a control program code which is burnt in a singlechip control panel in advance by a worker.

Preferably, referring to fig. 3, the water collecting box 7 is provided with an upper opening, the box body 1 is provided with a drainage cavity 11, the weighing seat 81 is arranged above the drainage cavity 11 through the support plate 12, the bottom of the water collecting box 7 is provided with a rotating shaft 71, two sides of the water collecting box 7 are respectively and oppositely provided with one receiving seat 72, and two ends of the rotating shaft 71 are respectively and rotatably connected with the two receiving seats 72. When the water in the water collecting box 7 is to be fully collected, the water collecting box 7 is lifted manually to turn around the rotating shaft 71, so that the water can be poured out, the water collecting box is put down to reset, water can be continuously filled, the operation is simple, and the labor force is greatly saved.

Preferably, referring to fig. 3, the pulse signal detection system of the flow sensor according to the present invention further includes a water pouring driving cylinder 73 for driving the water collecting box to pour, and a pneumatic switch 74 pneumatically connected to the water pouring driving cylinder. Every test station corresponds and sets up a set of pouring and drives actuating cylinder and pneumatic switch, and the cylinder switch setting is on the box, and the both ends that the pouring drove actuating cylinder are articulated with extension board and water collection box respectively, and when the staff opened pneumatic switch, the piston rod that the pouring drove actuating cylinder stretched out, drove water collection box 7 and mentioned, made the water collection box revolute the rotation of axes and just can pour water into in the drainage chamber automatically. When the pneumatic switch is turned off, the water is poured out to drive the air cylinder to drive the water collecting box to reset on the weighing platform. Through setting up like this, alleviate the workman and pour the labour of water, improve equipment's automation level.

Specifically, referring to fig. 1, the quality indication module 4 includes a display screen 41, and the display screen 41 is electrically connected to the single chip microcomputer control panel 2. The workman can learn the total number of flow sensor and the result of detecting at every turn according to the display screen.

Preferably, referring to fig. 1, the quality indication module 4 further includes a qualified product indicator lamp 42 and a rejected product alarm indicator lamp 43. And a group of qualified product indicator lamps 42 and unqualified product alarm indicator lamps 43 corresponding to each group of test stations. The staff can be according to the qualification quality judgement result that the off-the-shelf qualification quality judgement result is directly perceived to the light that certified products pilot lamp and nonconforming article warning light sent, improves detection efficiency.

Specifically, referring to fig. 1, the control switch module 3 further includes a start button 31 and a stop button 32. The start key 31 and the stop key 32 are both electrically connected with the single chip microcomputer control panel 2, and after a worker presses the start key 31, the pulse signal detection system automatically completes the detection step until the detection is completed; the detection is temporary if the stop key is pressed during the detection. In the above control step in this embodiment, the start button 31 and the stop button 32 are provided with two sets, and each set of start button 31 and stop button 32 correspondingly controls two test stations.

It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.

Claims (10)

1. A pulse signal detection system of a flow sensor is characterized by comprising a box body, a single-chip microcomputer control panel, a control switch module, a quality indication module and a water pumping module which are arranged on the box body, a plurality of groups of positioning mechanisms, a water collecting box and a weighing module for weighing the water collecting box and processing weighing data, wherein the groups of positioning mechanisms, the water collecting box and the weighing module are arranged on the box body; the positioning mechanism fixes the flow sensor to form a section of detection pipeline, a water inlet of the detection pipeline is connected with the water pumping module through a water pumping pipeline, and the water collecting box can receive water discharged from a water outlet of the detection pipeline; the control switch module, the quality indication module, the water pumping module and the weighing module are all electrically connected with the single-chip microcomputer control panel.

2. The pulse signal detection system of a flow sensor according to claim 1, wherein each set of the positioning mechanism includes a water discharging seat, a positioning seat, and a cylinder sequentially disposed on an outer wall of the housing, a water inlet seat is disposed at an end of a piston rod of the cylinder, a first water inlet and a first water outlet are disposed on the water inlet seat, a second water inlet and a second water outlet are disposed on the water discharging seat, the flow sensor is mounted on the positioning seat, the cylinder is configured to drive the water inlet seat to move toward the flow sensor, so that the first water outlet on the water inlet seat is connected to the water inlet pipe on the flow sensor, and a water outlet pipe of the flow sensor is connected to the second water inlet of the water discharging seat.

3. The pulse signal detection system of the flow sensor according to claim 2, wherein the second water outlet of the water discharging seat is connected to a water discharging pipe, the first water inlet of the water inlet seat is connected to the water pumping module through the water pumping pipeline, and the first water outlet of the water inlet seat and the second water inlet of the water discharging seat are provided with sealing rings.

4. The pulse signal detection system of the flow sensor according to claim 1, wherein the water pumping module comprises a water tank and a plurality of water pumps, a water inlet end of each water pump is connected with the water tank, an outlet end of each water pump is connected with the corresponding first water inlet through the water pumping pipeline, and a control end of each water pump is electrically connected with the single chip microcomputer control panel.

5. The pulse signal detection system of the flow sensor according to claim 1, wherein the weighing module comprises a weighing seat, a weighing sensor arranged on the weighing seat and a weighing data processing submodule installed on the single chip microcomputer.

6. The pulse signal detection system of a flow sensor according to claim 5, wherein the water collection box has an upper opening, the box body has a drainage cavity, the weighing seat is disposed above the drainage cavity through a support plate, a rotating shaft is disposed at the bottom of the water collection box, two receiving seats are disposed on two sides of the water collection box respectively, and two ends of the rotating shaft are rotatably connected to the two receiving seats respectively.

7. The pulse signal detection system of the flow sensor according to claim 6, further comprising a water pouring driving cylinder for driving the water collecting box to pour and a pneumatic switch pneumatically connected to the water pouring driving cylinder.

8. The pulse signal detection system of the flow sensor according to claim 1, wherein the quality indication module comprises a display screen, and the display screen is electrically connected with the single chip microcomputer control panel.

9. The pulse signal detection system of a flow sensor of claim 8, wherein said quality indication module further comprises a non-defective indicator light and a defective alarm indicator light.

10. The pulse signal detecting system of a flow sensor according to claim 1, wherein the control switch module includes a start button and a stop button.

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