Chain link type underwater wireless transmission sensor

Abstract

The invention discloses a chain link type underwater wireless transmission sensor, and relates to the field of water treatment mud scraping equipment, the chain link type underwater wireless transmission sensor comprises an elastic body, the external structure of the elastic body is in a chain link type, and a strain gauge is arranged in the elastic body; the battery module is arranged in the elastic body, and the battery module is connected with the strain gauges and the data processing module; the data processing module is arranged in the elastic body, the data processing module is respectively connected with the strain gauge and the battery module, and the data processing module transmits storage data to the data receiving module by adopting a wireless transmission LoRa technology; the data receiving module is arranged in an independent structural body and is used for receiving the data sent by the data processing module in real time; the sensor is of a chain link structure, can replace any working chain link in the mud scraper, can be conveniently arranged in the mud scraper, can measure, record and transmit the tension value borne by the chain link in real time when the device normally operates in sewage, and provides technical support for system model selection and equipment maintenance.

Description

Technical Field

[0001] The invention belongs to the field of water treatment sludge scraping equipment, and more specifically, relates to a chain-link type underwater wireless transmission sensor. Background Art

[0002] As an important scraping equipment for rectangular sedimentation tanks, the stress conditions of key components of non-metallic chain scrapers during operation are the focus of attention of all water plants. The annular traction chain links of non-metallic chain scrapers are mainly composed of working chain links, chain pins, clasps, etc. The main material is made of high-strength engineering plastics. It has the advantages of high strength, corrosion resistance, aging resistance, and light weight. It is the most critical core component of the whole machine. In order to grasp the actual stress conditions of the chain links of non-metallic chain scrapers when running in the sewage pool and avoid breakage and damage caused by excessive force, it is necessary to conduct real-time monitoring during the operation of the scraper, so as to provide technical support for system selection and equipment maintenance. However, how to achieve full-process monitoring while ensuring the normal operation of the scraper and without changing the occupied space is a major problem. Summary of the invention

[0003] The purpose of the present invention is to address the deficiencies in the prior art and to provide a chain-link underwater wireless transmission sensor, which has a chain-link structure and can replace any working chain link in a scraper. It can measure, record and transmit in real time the tension value exerted on the chain link when the device operates normally in sewage, thereby providing technical support for system selection and equipment maintenance.

[0004] In order to achieve the above object, the present invention provides a chain-link underwater wireless transmission sensor, comprising:

[0005] An elastic body, the external structure of which is in a chain link type, wherein a strain gauge is arranged inside the elastic body;

[0006] A battery module is disposed in the elastic body, and the battery module is connected to the strain gauge and the data processing module respectively;

[0007] A data processing module is arranged in the elastic body, and the data processing module is connected to the strain gauge and the battery module respectively. The data processing module stores data in a built-in SD card and transmits data to the data receiving module using wireless transmission LoRa technology.

[0008] The data receiving module is arranged in an independent structure and adopts the wireless transmission LoRa technology to receive the data sent by the data processing module.

[0009] Optionally, the elastomer includes two elastic blocks parallel to each other, a connecting column and a sleeve are arranged between the two elastic blocks, both ends of the connecting column are respectively vertically connected to the middle parts of the two elastic blocks, both ends of the sleeve respectively pass through one end of the two elastic blocks, and a first chain link hole is formed in the sleeve.

[0010] Optionally, the other ends of the two elastic blocks are correspondingly provided with second link holes.

[0011] Optionally, the strain gauge is respectively arranged in the two elastic blocks, and two ends of the strain gauge are respectively connected to the first chain link hole and the second chain link hole.

[0012] Optionally, a battery module compartment is opened in one of the elastic blocks, and a data processing module compartment is opened in the other elastic block.

[0013] Optionally, a wire tube is provided in the connecting column, the wire tube connects the battery module compartment and the data processing module compartment, and the connection circuit between the strain gauge and the data processing module is a bridge circuit.

[0014] Optionally, the data processing module has a built-in SD card, and the SD card stores the measurement data generated by the data processing module.

[0015] Optionally, the material of the elastomer is aluminum alloy.

[0016] The present invention provides a chain link underwater wireless transmission sensor, which has the beneficial effect that: the sensor sets a strain gauge in an elastic block and connects the strain gauge to the chain link holes at both ends, so that when the elastic body is deformed by tension, the resistance of the strain gauge changes, and then the corresponding millivolt potential output is obtained through the bridge circuit, and finally the converted data is stored in the SD card, and wireless communication is carried out through the LoRa technology to transmit to the data receiving module. The sensor can replace any working chain link in the scraper, and will not affect the normal operation of the scraper, and with the operation of the scraper, the tension data is transmitted from underwater to the data receiving module on the ground in real time.

[0017] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0019] Figure 1A schematic structural diagram of a chain-link underwater wireless transmission sensor according to an embodiment of the present invention is shown.

[0020] Figure 2 A cross-sectional view of a chain-link underwater wireless transmission sensor according to an embodiment of the present invention is shown.

[0021] Figure 3 A schematic diagram showing the connection between a chain link type underwater wireless transmission sensor and a conventional chain link according to an embodiment of the present invention is shown.

[0022] Figure 4 A schematic diagram of the application of a chain-link underwater wireless transmission sensor according to an embodiment of the present invention is shown.

[0023] Description of reference numerals:

[0024] 1. Strain gauge; 2. Battery; 3. Circuit board; 4. Elastic block; 5. Connecting column; 6. Casing; 7. Second chain link hole; 8. Battery compartment; 9. Chain link underwater wireless transmission sensor; 10. Conventional chain link. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0026] The present invention provides a chain-link underwater wireless transmission sensor, comprising:

[0027] An elastic body, the external structure of which is in a chain link type, wherein a strain gauge is arranged inside the elastic body;

[0028] A battery module is disposed in the elastic body, and the battery module is connected to the strain gauge and the data processing module respectively;

[0029] A data processing module is arranged in the elastic body, and the data processing module is connected to the strain gauge and the battery module respectively. The data processing module stores data in a built-in SD card and transmits data to the data receiving module using wireless transmission LoRa technology.

[0030] The data receiving module is arranged in an independent structure and adopts the wireless transmission LoRa technology to receive the data sent by the data processing module.

[0031] Specifically, the shell of the sensor is made of an elastomer, which is arranged in a chain link shape, and a strain gauge, a battery module, and a data processing module are arranged in the elastomer. In this way, when the elastomer is deformed by tension, the strain gauge will also deform at the same time, so that the resistance generated by the strain gauge is sent to the data processing module for signal processing, and finally the data is recorded in the SD card, and the wireless transmission LoRa technology is used to transmit the data to an independent data receiving module.

[0032] The purpose of data transmission through LoRa technology is to realize the real-time transmission of underwater tension measurement data of chain links. The working principle is to generate signals through linear frequency modulation (LFM), and the carrier frequency of each data packet changes linearly over time; this modulation method allows the signal to maintain good penetration and anti-multipath fading capabilities in sewage environments, thereby achieving long-distance transmission.

[0033] Optionally, the elastomer includes two elastic blocks parallel to each other, a connecting column and a sleeve are arranged between the two elastic blocks, both ends of the connecting column are vertically connected to the middle of the two elastic blocks, both ends of the sleeve pass through one end of the two elastic blocks, and a first chain link hole is formed in the sleeve.

[0034] Optionally, the other ends of the two elastic blocks are correspondingly provided with second link holes.

[0035] Specifically, the elastomer is composed of two elastic blocks, a connecting column and a sleeve, with a first chain link hole and a second chain link hole at both ends of the elastic block respectively, so that the two ends of the elastic body can be hinged with adjacent chain links, and during the rotation of the chain of the scraper, the tension exerted on the elastomer will change, and the connecting column and the sleeve connect the two elastic blocks into a whole, which not only forms a chain link shape, but also ensures the connection strength between the elastic blocks.

[0036] Optionally, the material of the elastomer is aluminum alloy.

[0037] Specifically, the elastomer is designed from aluminum alloy with high corrosion resistance and light weight. Since the chain-link-like elastomer has a special-shaped structure, it cannot be formed in one step using ordinary processing technology. Therefore, a high-precision four-axis machining center used to process complex curved surfaces is used for overall clamping and production, eliminating the error in measurement data caused by processing. It is also calibrated and tested by the patch to control the data measurement accuracy of the elastomer within 1%, which meets the actual measurement needs.

[0038] Optionally, the strain gauges are respectively arranged in the two elastic blocks, and two ends of the strain gauges are respectively connected to the first chain link hole and the second chain link hole.

[0039] Specifically, the two ends of the strain gauge are connected to the two chain link holes, so that when the adjacent chain links are pulled by force, the strain gauge will also be deformed by force. When the strain gauge is compressed or stretched, the resistance of the strain gauge changes, and the corresponding millivolt potential output is obtained through the bridge circuit. The tension value of the chain link in the sewage pool is collected through data processing and conversion, and the generated data is stored in the SD card, and then wireless communication is carried out through LoRa technology.

[0040] Optionally, a battery module compartment is opened in one elastic block, and a data processing module compartment is opened in the other elastic block.

[0041] Optionally, a wire tube is provided in the connecting column, the wire tube connects the battery module compartment and the data processing module compartment, and the connection circuit between the strain gauge and the data processing module is a bridge circuit.

[0042] Specifically, a battery module compartment and a data processing module compartment are respectively arranged in the two elastic blocks, and the compartment bodies on both sides are sealed with two cover plates, so as to provide waterproof protection for the electrical components. The battery module and the data processing module are also connected through the wire tube in the connecting column to power the circuit board. When the strain gauge is compressed or stretched, the resistance of the strain gauge changes, and the corresponding millivolt potential output is obtained through the bridge circuit. The tension value of the chain link in the sewage pool is collected through data processing and conversion, and the data generated by the circuit board can be stored in the SD card. Finally, wireless communication is carried out through LoRa technology.

[0043] In one embodiment, strain gauge compartments are respectively provided in the elastic blocks of the battery module compartment and the data processing module compartment. The strain gauge is fixed to the elastic block by gluing in the strain gauge compartment, and the wall thickness of the elastic block is precisely designed and calculated, so that the strain gauge can meet the deformation requirements.

[0044] Optionally, a SD card is built into the data processing module.

[0045] Specifically, when the sensor performs data processing, it collects mV signals through the principle of strain gauges, first converts the non-standard resistance signal into a standard analog electrical signal (0.5V~2.5V) through analog conversion, and then converts the analog and digital quantities again to convert the standard analog signal into a digital signal and stores it in the SD card.

[0046] Optionally, the data receiving module communicates wirelessly with the data processing module in real time.

[0047] Specifically, the chain links with integrated sensors are installed in the scraper, and the data is transmitted to the data receiving module on the ground through LoRa wireless communication. The chain link tension value of the scraper when running in sewage can be measured, recorded and transmitted in real time, which is convenient for providing technical support for system selection and equipment maintenance.

[0048] Example

[0049] like Figures 1 to 4 As shown, the present invention provides a chain-link underwater wireless transmission sensor, comprising:

[0050] The elastic body has a chain link-shaped external structure and a strain gauge 1 is arranged inside the elastic body;

[0051] A battery 2, which is arranged in the elastic body and connected to the strain gauge 1;

[0052] A circuit board 3 is arranged in the elastic body, and one end of the circuit board 3 is connected to the strain gauge 1;

[0053] The storage module is arranged in the elastic body, and the other end of the circuit board is connected to the storage module. The storage module adopts the wireless transmission LoRa technology to transmit the stored data outward.

[0054] In this embodiment, the elastomer includes two elastic blocks 4 parallel to each other, a connecting column 5 and a sleeve 6 are arranged between the two elastic blocks 4, the two ends of the connecting column 5 are respectively vertically connected to the middle of the two elastic blocks 4, the two ends of the sleeve 6 respectively pass through one end of the two elastic blocks 4, and a first chain link hole is formed in the sleeve 6.

[0055] In this embodiment, the other ends of the two elastic blocks 4 are correspondingly provided with second link holes 7 .

[0056] In this embodiment, the strain gauge 1 is disposed in an elastic block, and two ends of the strain gauge 1 are connected to the first chain link hole and the second chain link hole 7 respectively.

[0057] In this embodiment, a circuit board compartment is opened in one elastic block, and the strain gauge 1 is arranged in the circuit board compartment, and a battery compartment 8 is opened in the other elastic block.

[0058] In this embodiment, a wire tube is provided in the connecting column 5 , and the wire tube connects the circuit board compartment and the battery compartment 8 . The connection circuit between the strain gauge 1 and the circuit board 3 is a bridge circuit.

[0059] In this embodiment, the storage module is an SD card, and the SD card is connected to the circuit board 3 .

[0060] In this embodiment, the material of the elastic body is aluminum alloy.

[0061] The present invention also provides a non-metallic chain-type scraper, comprising a plurality of chain links, at least one chain link being the above-mentioned chain-link-type underwater wireless transmission sensor 9.

[0062] In summary, the chain link underwater wireless transmission sensor 9 is connected to the conventional chain link 10. Since the two ends of the strain gauge 1 extend to the positions of the first chain link hole and the second chain link hole 7, the pulling force exerted on the sludge scraper when it is running in the sewage pool will be transmitted to the strain gauge 1, so that the resistance value of the strain gauge 1 will change, and the corresponding millivolt potential output will be obtained through the bridge circuit. The circuit board 3 can collect the tension value of the chain link in the sewage pool through data processing and conversion, and the final data is stored in the SD card and transmitted to the outside through LoRa technology.

[0063] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A chain-link underwater wireless transmission sensor, characterized in that: include: An elastic body, the external structure of which is in a chain link type, wherein a strain gauge is arranged inside the elastic body; A battery module is disposed in the elastic body, and the battery module is connected to the strain gauge and the data processing module respectively; A data processing module is arranged in the elastic body, the data processing module is connected to the strain gauge and the battery module respectively, the data processing module stores data in a built-in SD card, and transmits data to the data receiving module using wireless transmission LoRa technology; The data receiving module is arranged in an independent structure and adopts the wireless transmission LoRa technology to receive the data sent by the data processing module.

2. The chain-link underwater wireless transmission sensor according to claim 1, characterized in that: The elastic body includes two elastic blocks parallel to each other, a connecting column and a sleeve are arranged between the two elastic blocks, the two ends of the connecting column are respectively vertically connected to the middle of the two elastic blocks, the two ends of the sleeve respectively pass through one end of the two elastic blocks, and a first chain link hole is formed in the sleeve.

3. The chain-link underwater wireless transmission sensor according to claim 2, characterized in that: The other ends of the two elastic blocks are correspondingly provided with second chain link holes.

4. The chain-link underwater wireless transmission sensor according to claim 3 is characterized in that: The strain gauges are respectively arranged in the two elastic blocks, and two ends of the strain gauges are respectively connected to the first chain link hole and the second chain link hole.

5. The chain-link underwater wireless transmission sensor according to claim 4, characterized in that: A battery module compartment is provided in one of the elastic blocks, and a data processing module compartment is provided in the other elastic block.

6. The chain-link underwater wireless transmission sensor according to claim 5, characterized in that: A wire tube is arranged in the connecting column, and the wire tube connects the battery module compartment and the data processing module compartment. The connection circuit between the strain gauge and the data processing module is a bridge circuit.

7. The chain-link underwater wireless transmission sensor according to claim 1, characterized in that: The data processing module has a built-in SD card, and the SD card stores the measurement data generated by the data processing module.

8. The chain-link underwater wireless transmission sensor according to claim 1, characterized in that: The material of the elastic body is aluminum alloy.

Images