A passive wireless vibration sensor, system and method

Abstract

The present invention discloses a passive wireless vibration sensor, system and method, which relate to the field of vibration sensors, wherein the vibration sensor includes a power transformer, which is installed on the power supply line of the device to be detected. The sensor device includes a shell, a vibration circuit board is arranged in the shell, a vibration acquisition chip is arranged on the vibration circuit board, and the power transformer is electrically connected to the vibration circuit board and the vibration acquisition chip. The present application uses the power transformer to be installed on the power supply line of the device to be detected, so as to power the device in the sensor device without batteries or other external power supplies, thereby reducing the maintenance cost and potential failure risk of the equipment. In addition, the vibration sensor does not require wiring, which greatly simplifies the difficulty of installation and maintenance. The vibration sensing system includes the above-mentioned passive wireless vibration sensor. The method for using the passive wireless vibration sensor is applied to the above-mentioned passive wireless vibration sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration sensors, and more specifically, to a passive wireless vibration sensor. The present invention also relates to a vibration sensing system, including the passive wireless vibration sensor. The present invention further relates to a method for using the passive wireless vibration sensor, which is applied to the passive wireless vibration sensor. Background Art

[0002] A vibration sensor is a sensor used to detect mechanical and structural vibrations. It can detect and measure information such as the vibration frequency, vibration amplitude, and vibration acceleration of the structure in real time, and convert this information into electrical signal output for processing and analysis.

[0003] In the prior art, vibration sensors are powered by wires or batteries. Wired sensors require troublesome on-site wiring, which takes a long time and is costly, and are limited in mobility, complicated to install, and have high maintenance costs. Battery-powered sensors generally have limited battery life and usually require low-power designs, but this will limit the function and performance of the sensor. In addition, the ambient temperature has a great impact on the battery, shortening the battery life, which can easily cause battery failure and sensor failure, thereby increasing the maintenance cost of the product.

[0004] In summary, how to reduce the maintenance cost and potential failure risk of equipment and solve the wiring trouble problem is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a passive wireless vibration sensor, which effectively reduces the maintenance cost and potential failure risk of the equipment and solves the problem of troublesome wiring.

[0006] Another object of the present invention is to provide a vibration sensing system, comprising the above-mentioned passive wireless vibration sensor.

[0007] Another object of the present invention is to provide a method for using a passive wireless vibration sensor, which is applied to the above-mentioned passive wireless vibration sensor.

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] A passive wireless vibration sensor, comprising:

[0010] A power supply device, the power supply device comprising a power transformer, the power transformer being installed on a power supply line of the device to be detected;

[0011] The sensor device comprises a shell, a vibration circuit board is arranged in the shell, a vibration collection chip is arranged on the vibration circuit board, and the power transformer is electrically connected to the vibration circuit board and the vibration collection chip.

[0012] Preferably, the shell includes a base and an upper cover arranged on the base, an installation space is formed between the upper cover and the base, and the vibration circuit board is fixedly arranged on the base.

[0013] Preferably, a mounting structure is provided between the upper cover and the base, and the mounting structure is used for detachably mounting the upper cover on the base.

[0014] Preferably, the mounting structure includes a card slot opened on the base and a card block arranged on the upper cover and matched with the card slot, the card slot and the card block are snap-fitted together, and the card block is an elastic member to enable detachable fit between the upper cover and the base.

[0015] Preferably, a sealing gasket is provided at the connection between the card slot and the card block, and a limiting pad is provided on one side of the sealing gasket close to the outer surface of the upper cover toward the upper cover, and one side of the limiting pad abuts against the outer surface of the upper cover to make the upper cover fit tightly against the base.

[0016] Preferably, a glue sealing layer is provided between the vibration circuit board and the base, the glue sealing layer adopts a resin glue sealing curing molding structure, and the vibration circuit board is fixedly sealed in the shell through the glue sealing layer.

[0017] A vibration sensing system, comprising any of the above passive wireless vibration sensors, further comprising:

[0018] A wireless communication module is disposed in the housing, the wireless communication module is electrically connected to the vibration collection chip, and is used to collect data from the vibration collection chip and transmit it to other devices;

[0019] A central processing module is used to receive data from the wireless communication module and perform centralized processing and analysis.

[0020] Preferably, the wireless communication module supports multiple communication protocols, including but not limited to Wi-Fi, Bluetooth, 4G, Lora and Zigbee.

[0021] Preferably, the central processing module includes:

[0022] A storage unit, the storage unit is used to store the received data as historical vibration data for subsequent analysis;

[0023] A visualization unit, the visualization unit is used to generate a chart for the received data and display the change trend of the vibration data;

[0024] The abnormal alarm unit is used to detect the received data and issue an alarm for abnormal vibration data.

[0025] A method for using a passive wireless vibration sensor, applied to any of the passive wireless vibration sensors described above, the method comprising:

[0026] Install the power transformer on the power supply line of the device to be detected, and place the housing on the part to be detected of the device to be detected;

[0027] The vibration collection chip on the vibration circuit board collects and transmits the vibration data of the device in real time.

[0028] The passive wireless vibration sensor provided by the present invention comprises a power supply device and a sensor device, wherein the power supply device comprises a power transformer, and the power transformer is installed on the power supply line of the device to be detected. The sensor device comprises a housing, wherein a vibration circuit board is arranged in the housing, and a vibration collection chip is arranged on the vibration circuit board, and the power transformer is electrically connected to the vibration circuit board and the vibration collection chip.

[0029] The passive wireless vibration sensor provided by the present application is installed on the power supply line of the device to be detected by means of a power transformer, so as to power the device in the sensor device without the need for batteries or other external power supplies, thereby reducing the maintenance cost and potential failure risk of the equipment. In addition, the vibration sensor does not require wiring and only needs to be installed in the place to be monitored, which greatly simplifies the difficulty of installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0031] Figure 1 Schematic diagram of the structure of the passive wireless vibration sensor in this embodiment.

[0032] Reference numerals include:

[0033] 1. Power supply line; 2. Power transformer; 3. First conductor; 4. Base; 5. Vibration acquisition chip; 6. Wireless communication module; 7. Vibration circuit board; 8. Upper cover; 9. Second conductor; 10. Connector. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which the invention belongs. "First", "second" and similar words used in the present invention do not indicate any order, quantity or importance. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. The embodiments of the present application disclose a passive wireless vibration sensor, system and method.

[0036] The core of the present invention is to provide a passive wireless vibration sensor.

[0037] Another core of the present invention is to provide a vibration sensing system, including the above-mentioned passive wireless vibration sensor.

[0038] Another core of the present invention is to provide a method for using a passive wireless vibration sensor, which is applied to the above-mentioned passive wireless vibration sensor.

[0039] Please refer to Figure 1 .

[0040] The passive wireless vibration sensor provided by the present invention comprises a power supply device and a sensor device, wherein the power supply device comprises a power transformer 2, and the power transformer 2 is installed on a power supply line 1 of the device to be detected. The sensor device comprises a housing, wherein a vibration circuit board 7 is arranged in the housing, and a vibration collection chip 5 is arranged on the vibration circuit board 7, and the power transformer 2 is electrically connected to the vibration circuit board 7 and the vibration collection chip 5.

[0041] Specifically, the core of the power supply device is the power transformer 2, which is directly installed on the power supply line 1 of the device to be detected. This power transformer 2 adopts the principle of electromagnetic induction and can capture energy from the current flowing through the power line. By optimizing the coil design, improving material efficiency and adopting efficient energy conversion circuits, the power transformer 2 can stably convert the captured electrical energy into a DC voltage or a low-power AC voltage suitable for the sensor. This design not only ensures the continuous power supply of the sensor system, but also avoids dependence on traditional power supplies and reduces installation and maintenance costs. The main body of the sensor device is a shell, and a vibration circuit board 7 is arranged at the bottom of the inner shell. A vibration acquisition chip 5 is welded on the vibration circuit board 7, which is responsible for capturing and converting the mechanical signal from the vibration of the equipment into an electrical signal. The vibration acquisition chip 5 adopts high-sensitivity acceleration sensor technology, which can accurately measure the vibration of the equipment at different frequencies, which is crucial for early detection of equipment failures and evaluation of structural health.

[0042] In order to ensure accurate transmission and processing of data, the power transformer 2 is electrically connected to the vibration circuit board 7 and the vibration collection chip 5 through a carefully designed circuit. This connection not only ensures that the sensor system can obtain sufficient power in real time to maintain operation, but also allows vibration data to be efficiently collected and prepared for wireless transmission. In addition, the sensor device may also include a low-power microprocessor (not explicitly mentioned in the original text, but it can be considered to be included to improve the design) for preliminary processing of vibration data, reducing the amount of transmitted data, and further improving energy efficiency.

[0043] The above passive wireless vibration sensor is installed on the power supply line 1 of the device to be detected by means of the power transformer 2, so as to power the device in the sensor device without the need for batteries or other external power supplies, thereby reducing the maintenance cost and potential failure risk of the device. In addition, the vibration sensor does not require wiring and only needs to be installed at the place to be monitored, which greatly simplifies the difficulty of installation and maintenance.

[0044] The passive wireless vibration sensor provided by the present invention is described in more detail below with reference to the accompanying drawings and specific embodiments.

[0045] In a specific embodiment, reference Figure 1 The shell includes a base 4 and an upper cover 8 covered on the base 4 , an installation space is formed between the upper cover 8 and the base 4 , and a vibration circuit board 7 is fixedly arranged on the base 4 .

[0046] Specifically, the installation space is used to install various electronic components in the sensor device. The enclosed installation space can protect the above-mentioned electronic components. At the same time, when the power sensor 2 is electrically connected to the vibration circuit board 7 and the vibration collection chip 5, it can be through the first wire 3 and the connector 10. The connector 10 is arranged on the shell, and the first wire 3 is connected between the connector 10 and the power sensor 2. The second wire 9 is led out from the connector 10 and connected to the vibration circuit board 7 and the vibration collection chip 5 to realize power supply to the vibration circuit board 7 and the vibration collection chip 5. The installation space can well install and protect the second wire 9, the vibration circuit board 7 and the vibration collection chip 5.

[0047] Based on any of the above embodiments, Figure 1 A mounting structure is provided between the upper cover 8 and the base 4 , and the mounting structure is used to detachably mount the upper cover 8 on the base 4 .

[0048] Specifically, the upper cover 8 and the base 4 are detachably connected by means of a mounting structure, so that the user can easily access the inside of the shell to perform necessary cleaning, calibration or maintenance work, thereby extending the service life of the sensor. This mounting structure may include various forms, such as threaded connection, snap connection, slide rail connection or magnetic connection. Each connection method has its specific application scenarios and advantages. For example, the threaded connection provides a stable fixing effect, which is suitable for situations where large external forces or vibrations need to be withstood; the snap connection is easy to install and disassemble quickly, which is suitable for scenarios where internal components need to be frequently accessed; the slide rail connection provides a smooth opening and closing experience, which is suitable for situations where internal sensitive components need to be protected from accidental damage; the magnetic connection is particularly suitable for situations that require quick response and frequent inspections due to its contactless and easy-to-operate characteristics.

[0049] Based on any of the above embodiments, Figure 1 The mounting structure includes a card slot opened on the base 4 and a card block arranged on the upper cover 8 and matched with the card slot. The card slot and the card block are snap-fitted together, and the card block is an elastic member to enable the upper cover 8 and the base 4 to be detachably matched.

[0050] Specifically, the installation structure of the present application can adopt a method of engaging with a card block and a card slot, the card slot is opened on the peripheral side of the base 4 (the connection between the upper cover 8 and the base 4 in the figure), and a plurality of protrusions for engaging are arranged on the outer side of the card slot (not shown in the figure), and the card block is arranged on the peripheral side of the upper cover 8 close to one end of the base 4, and the upper cover 8 is buckled on the base 4, wherein the card block is an elastic member, on which a buckle that cooperates with the protrusion is arranged, and when the upper cover 8 is buckled on the base 4, the card block contacts the protrusion and is lifted and recovers after passing, thereby cooperating with the card slot to achieve fixation, and the card block can be pried outward during the disassembly process.

[0051] Based on any of the above embodiments, Figure 1 A sealing gasket is provided at the connection between the card slot and the card block, and a limiting pad is provided on one side of the sealing gasket close to the outer surface of the upper cover 8 toward the upper cover 8, and one side of the limiting pad abuts against the outer surface of the upper cover 8 to make the upper cover 8 fit tightly against the base 4.

[0052] Specifically, since a gap will appear between the upper cover 8 and the base 4 at the connection between the card slot and the card block, a sealing gasket can be provided at the connection between the card slot and the card block. The sealing gasket can effectively fill the gap, and its two sides are respectively abutted between the upper cover 8 and the base 4, which can effectively prevent the entry of external dust and rainwater, and improve the sealing performance of the device.

[0053] Based on any of the above embodiments, Figure 1 A glue sealing layer is provided between the vibration circuit board 7 and the base 4. The glue sealing layer adopts a resin glue sealing curing molding structure, and the vibration circuit board 7 is sealed in the shell through the glue sealing layer.

[0054] Specifically, the adhesive seal layer firmly fixes the vibration circuit board 7 on the base 4, preventing the circuit board from shifting or loosening during installation or use. At the same time, it can also absorb and disperse vibration and impact to a certain extent, ensuring that the circuit board remains stable when subjected to mechanical vibration or impact, and reducing the possibility of loosening or damage to components. And after the resin glue is cured, it can form a strong, sealed adhesion layer with excellent waterproof performance. This means that even if the sensor is in a humid or watery environment, moisture cannot penetrate into the interior of the vibration circuit board 7, thereby effectively protecting the electronic components of the vibration circuit board 7 from moisture erosion and avoiding performance degradation or failure caused by moisture.

[0055] The vibration sensing system provided by the present invention includes the above-mentioned passive wireless vibration sensor, and also includes a wireless communication module 6 and a central processing module. The wireless communication module 6 is arranged in the shell, and the wireless communication module 6 is electrically connected to the vibration acquisition chip 5. The wireless communication module 6 is used to collect data from the vibration acquisition chip 5 and transmit it to other devices. The central processing module is used to receive data from the wireless communication module 6 and perform centralized processing and analysis.

[0056] Specifically, the power transformer 2 installed on the power supply line 1 of the monitored device supplies power to the entire system without the need for external power supply access. The vibration acquisition chip 5 on the vibration circuit board 7 starts working, using the built-in acceleration sensor to accurately capture the vibration signals of the device at different frequencies. These vibration signals are converted into electrical signals and prepared for further processing and transmission. The processed data is stored in the cache inside the chip, waiting to be read by the wireless communication module 6. The wireless communication module 6 is electrically connected to the vibration acquisition chip 5 and is responsible for collecting the vibration data stored in the chip. Once the data collection is completed, the wireless communication module 6 packages the data through the built-in wireless communication technology and sends it to the preset central processing module. The central processing module centrally processes and analyzes the received data. The system effectively reduces the maintenance cost and potential failure risk of the equipment.

[0057] Based on any of the above embodiments, the wireless communication module supports multiple communication protocols, including but not limited to Wi-Fi, Bluetooth, 4G, Lora and Zigbee.

[0058] Based on any of the above embodiments, the central processing module includes a storage unit, a visualization unit and an abnormal alarm unit. The storage unit is used to store the received data as historical vibration data for subsequent analysis. The visualization unit is used to generate charts for the received data and display the changing trend of the vibration data. The abnormal alarm unit is used to detect the received data and issue an alarm for abnormal vibration data.

[0059] Specifically, the central processing module is further refined and enhanced, including the introduction of a storage unit, a visualization unit, and an abnormal alarm unit. The main responsibility of the storage unit is to receive data from the wireless communication module and save it as historical vibration data. These historical data are crucial for subsequent analysis, trend prediction, and troubleshooting. The storage unit usually uses a high-performance database management system to ensure the integrity, security, and accessibility of the data. By storing historical vibration data, the system can track the changing trend of the vibration state of the equipment and provide data support for the preventive maintenance and fault prediction of the equipment. In addition, historical data can also be used for algorithm training and model optimization to improve the accuracy and reliability of vibration analysis. The visualization unit is responsible for converting the received vibration data into intuitive charts and graphs, such as line charts, bar charts, scatter plots, etc. These charts show the changing trend of vibration data over time and the relationship between different vibration parameters. Users can easily view and analyze vibration data through a visual interface to quickly identify potential anomalies or faults. The visualization unit improves the readability and comprehensibility of the data, allowing non-professionals to easily interpret vibration data. In addition, through intuitive chart display, users can more intuitively understand the operating status of the equipment and take necessary maintenance measures in a timely manner. The abnormal alarm unit is a key component of the central processing module. It is responsible for real-time monitoring of the received vibration data and detecting whether there are abnormal values ​​or abnormal patterns in it. Once abnormal vibration data is detected, the abnormal alarm unit will immediately trigger the alarm mechanism and notify relevant personnel through SMS, email, APP push, etc. The abnormal alarm unit can detect potential failures or abnormal conditions of the equipment in a timely manner, providing maintenance personnel with valuable response time. Through timely alarm notifications, the system can reduce the risk of failures and reduce the degree of equipment damage, thereby extending the service life of the equipment and reducing maintenance costs.

[0060] The method for using the passive wireless vibration sensor provided by the present invention is applied to the above-mentioned passive wireless vibration sensor, and the method for using includes:

[0061] Install the power transformer 2 on the power supply line 1 of the device to be tested, and place the housing on the part to be tested of the device to be tested;

[0062] The vibration collection chip 5 on the vibration circuit board 7 collects and transmits the vibration data of the device in real time.

[0063] Specifically, first, confirm the position of the power supply line 1 of the device to be tested and ensure that it is in a safe contact state. Install the power transformer 2 tightly and firmly on the power supply line 1. The design of the power transformer 2 should ensure that it can stably obtain power from the power line without affecting the normal power supply of the power line. Check whether the installation of the power transformer 2 is firm to avoid power supply problems caused by loosening or falling off during subsequent use. According to the specific structure of the device to be tested and the vibration monitoring requirements, select a suitable part to be tested. Generally, this part should be able to accurately reflect the vibration characteristics of the equipment, such as bearings, gearboxes, motors, etc. Place the housing of the passive wireless vibration sensor (including components such as vibration circuit board 7, wireless communication module 6, etc.) on the selected part to be tested. The housing is easy to install and disassemble, and ensure that it can be stably attached to the equipment to avoid displacement or falling off during vibration monitoring. Use appropriate fixing devices (such as screws, clips or magnetic devices) to firmly fix the housing to the device. After the power transformer 2 provides stable power to the vibration sensor, the vibration collection chip 5 on the vibration circuit board 7 starts working. The vibration collection chip 5 uses a built-in accelerometer or other vibration sensing element to collect the vibration data of the device in real time. These vibration data may include key parameters such as vibration amplitude, frequency, and phase. The vibration sensor used in this method does not require an external power supply, and obtains energy through radio waves or electromagnetic induction, etc., without batteries or other external power supplies, thereby reducing the maintenance cost and potential failure risk of the equipment. At the same time, it has high safety performance, and does not generate sparks or heat when used in flammable and explosive environments, avoiding the risk of electrical short circuits and equipment failures, and improving the safety of the system; the wireless communication capability of passive wireless sensors allows signals to penetrate objects, which is suitable for monitoring in complex environments, such as pipelines buried underground or in hidden locations; the passive design reduces moving parts, improves the reliability and service life of the sensor, and is suitable for long-term monitoring and data collection; no wiring is required, and it only needs to be installed in the place where monitoring is required, which greatly simplifies the difficulty of installation and maintenance. And wireless sensors do not require additional wiring and are easy to expand.

[0064] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0065] The above is a detailed introduction to a passive wireless vibration sensor, system and method provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A passive wireless vibration sensor, characterized in that: include:. A power supply device, the power supply device comprising a power transformer (2), the power transformer (2) being installed on a power supply line (1) of a device to be detected; A sensor device, the sensor device comprising a housing, a vibration circuit board (7) being arranged in the housing, a vibration collection chip (5) being arranged on the vibration circuit board (7), and the power transformer (2) being electrically connected to the vibration circuit board (7) and the vibration collection chip (5).

2. A passive wireless vibration sensor according to claim 1, characterized in that: The housing comprises a base (4) and an upper cover (8) arranged on the base (4), an installation space is formed between the upper cover (8) and the base (4), and the vibration circuit board (7) is fixedly arranged on the base (4).

3. A passive wireless vibration sensor according to claim 2, characterized in that: A mounting structure is provided between the upper cover (8) and the base (4), and the mounting structure is used to detachably mount the upper cover (8) on the base (4).

4. A passive wireless vibration sensor according to claim 3, characterized in that: The mounting structure comprises a card slot formed on the base (4) and a card block provided on the upper cover (8) and cooperating with the card slot, the card slot and the card block being card-engaged with each other, and the card block being an elastic member so as to enable detachable cooperation between the upper cover (8) and the base (4).

5. A passive wireless vibration sensor according to claim 4, characterized in that: A sealing gasket is provided at the connection between the card slot and the card block, and a limiting pad is provided on a side of the sealing gasket close to the outer surface of the upper cover (8) and facing the upper cover (8), and one side of the limiting pad abuts against the outer surface of the upper cover (8) so that the upper cover (8) fits tightly against the base (4).

6. A passive wireless vibration sensor according to claim 2, characterized in that: A glue sealing layer is provided between the vibration circuit board (7) and the base (4), the glue sealing layer adopts a resin glue sealing curing molding structure, and the vibration circuit board (7) is fixedly sealed in the shell through the glue sealing layer.

7. A vibration sensing system, characterized in that: The passive wireless vibration sensor according to any one of claims 1 to 6 further comprises: A wireless communication module (6) is arranged in the housing, the wireless communication module (6) is electrically connected to the vibration collection chip (5), and the wireless communication module (6) is used to collect data from the vibration collection chip (5) and transmit the data to other devices; A central processing module, the central processing module is used to receive data from the wireless communication module (6) and perform centralized processing and analysis.

8. A passive wireless vibration sensor according to claim 7, characterized in that: The wireless communication module supports multiple communication protocols, including but not limited to Wi-Fi, Bluetooth, 4G, Lora and Zigbee.

9. A passive wireless vibration sensor according to claim 7, characterized in that: The central processing module comprises: A storage unit, the storage unit is used to store the received data as historical vibration data for subsequent analysis; A visualization unit, the visualization unit is used to generate a chart for the received data and display the change trend of the vibration data; The abnormal alarm unit is used to detect the received data and issue an alarm for abnormal vibration data.

10. A method for using a passive wireless vibration sensor, characterized in that: The passive wireless vibration sensor according to any one of claims 1 to 6, wherein the method of use comprises: The power transformer (2) is installed on the power supply line (1) of the device to be detected, and the housing is placed on the part to be detected of the device to be detected; The vibration collection chip (5) on the vibration circuit board (7) collects and transmits vibration data of the device in real time.

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