Wireless transmission ultrasonic sensor detection device and method

Abstract

The invention relates to a wireless transmission ultrasonic sensor detection device and method, and the device comprises a housing, and a main control chip, a WiFi module, a DAC conversion module, an ADC conversion module, a power amplifier circuit, an operational amplifier circuit, a main control minimum system circuit, a battery, a power management circuit and an ultrasonic sensor which are disposed in the housing. The DAC conversion module is connected with the power amplifier circuit, the power amplifier circuit is connected with the ultrasonic transducer, the ultrasonic transducer is connected with the operational amplifier circuit, the operational amplifier circuit is connected with the ADC conversion module, the ADC conversion module is connected with the main control chip, the main control chip is connected with the WiFi module, and the WiFi module is connected with the antenna. According to the present invention, the wireless transmission ultrasonic sensor detection device is provided according to the underground drainage pipeline detection requirement under the high water level working condition, the measurement can be performed without any preparatory work, the field arrangement and operation are simple and convenient, the detection is rapid, and the accuracy is high.

Description

Technical Field

[0001] This invention belongs to the field of ultrasonic sensor detection technology, and in particular to a wireless transmission ultrasonic sensor detection device and method. Background Art

[0002] In recent years, my country's urbanization has progressed rapidly, and the number of urban underground pipe networks has also grown exponentially. Many urban underground drainage pipes operate under high loads for extended periods, with some having served for over 30 years and nearing the end of their service life. Timely inspections are necessary to ensure their proper functioning. Currently, underground drainage pipe inspections primarily rely on video imaging. This method depends on manual visual judgment, is highly reliable, and can detect a wide range of faults. However, because the pipes operate under high or full water conditions for extended periods, the upstream and downstream sides of the pipe must be sealed before inspection to create an empty or low-water-level condition. This method has drawbacks such as long preparation time, high manpower and material costs, and a cumbersome inspection process. Summary of the Invention

[0003] The purpose of this invention is to solve the problem that existing ultrasonic underwater transducers require complex equipment and cannot meet the requirements for rapid deployment and relocation in actual field testing. This invention provides a wireless transmission ultrasonic sensor testing device and method that integrates the ultrasonic underwater transducer and its external equipment, allowing it to be used without wiring in the field. It can also be remotely controlled by a laptop via a WiFi module, thereby simplifying operation, shortening testing time, and improving testing efficiency.

[0004] The technical solution adopted by this invention to solve the technical problem is:

[0005] A first aspect of the present invention is to provide a wireless transmission ultrasonic sensor detection device, comprising a housing and a main control chip, a WiFi module, a DAC conversion module, an ADC conversion module, a power amplifier circuit, an operational amplifier circuit, a main control minimum system circuit, a battery, a power management circuit, and an ultrasonic sensor installed within the housing. The main control chip is connected to the DAC conversion module, the DAC conversion module is connected to the power amplifier circuit, the power amplifier circuit is connected to an ultrasonic transducer, the ultrasonic transducer is connected to the operational amplifier circuit, the operational amplifier circuit is connected to the ADC conversion module, the ADC conversion module is connected to the main control chip, the main control chip is connected to the WiFi module, and the WiFi module is connected to an antenna.

[0006] Transmission process: The host computer sends commands via software, which are transmitted to the main control chip via the WiFi module. The main control chip outputs a digital signal, which is converted into an analog sine wave signal by the DAC module and then driven by the power amplifier circuit to transmit the signal through the ultrasonic transducer. Reception process: The ultrasonic transducer receives the signal and transmits it to the main control chip via the ADC conversion module. After receiving the signal, the main control chip can first store it and then send the data to the host computer via the WiFi module through the Ethernet. The host computer receives the signal and performs subsequent processing.

[0007] Furthermore, the main control chip is an FPGA or an STM32.

[0008] Furthermore, the WiFi module is connected to the antenna via an SMA interface.

[0009] Furthermore, the device charges the battery via a Type-C interface.

[0010] Furthermore, the rear cover of the housing and the antenna interface are both sealed with waterproof rubber.

[0011] Furthermore, a groove is provided in the middle of the housing to connect and fix the buckle.

[0012] A second aspect of the present invention is to provide a detection method for the above-described detection device.

[0013] When used for defect detection: the device is placed in the pipeline through the inspection well, the host computer is wirelessly connected to the device, commands are sent through the software, and the reflected signal is waited for to be returned. The software automatically detects the location of the defect and identifies the type of defect based on the reflected signal.

[0014] When used to detect connectivity: Two detection devices are used. One detection device is placed at the beginning of the pipeline through the inspection well, and the other detection device is placed at the end of the pipeline. Two host computers are connected to the two devices respectively. One host computer sends a command, and the other host computer receives the signal. The software automatically determines whether the pipeline section is connected based on whether a signal is received.

[0015] The advantages and positive effects of this invention are:

[0016] 1. This invention addresses the current need for underground drainage pipeline inspection under high water level conditions by providing a wireless transmission ultrasonic sensor inspection device. It can perform measurements without any preparation work, is easy to set up and operate on-site, and provides fast and highly accurate detection.

[0017] 2. This invention can also detect empty pipes. Due to its modular design, when dealing with empty pipes or pipes under high water level conditions, simply replacing the front-end transducer can meet the detection requirements. Attached Figure Description

[0018] Figure 1 This is a front view of the detection device of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the detection device of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the detection device of the present invention (with the back cover open);

[0021] Figure 4This is a circuit block diagram of the detection device of the present invention;

[0022] Figure 5 This is a state diagram showing the state of the detection device of the present invention when detecting defects;

[0023] Figure 6 This is a state diagram used by the detection device of the present invention when detecting connectivity.

[0024] In the diagram: 1 is the housing, 1-1 is the groove, 1-2 is the back cover, 2 is the antenna, and 3 is the Type-C interface. Detailed Implementation

[0025] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not limiting, and should not be used to limit the scope of protection of the present invention.

[0026] This invention proposes a wireless transmission ultrasonic sensor detection device, such as... Figure 1-3 As shown, it includes an external metal sealed housing 1, an antenna 2, a type-C interface 3, a rear cover 1-2, an ultrasonic transducer, a power amplifier circuit, an operational amplifier circuit, a main control minimum system circuit, a battery, a power management circuit, and a WiFi module.

[0027] like Figure 4 As shown, the main control chip is connected to the DAC conversion module, the DAC conversion module is connected to the power amplifier circuit, the power amplifier circuit is connected to the ultrasonic transducer, the ultrasonic transducer is connected to the operational amplifier circuit, the operational amplifier circuit is connected to the ADC conversion module, the ADC conversion module is connected to the main control chip, the main control chip is connected to the WiFi module, and the WiFi module is connected to the antenna (2).

[0028] The device is based on the principle of sound wave propagation and reflection in pipelines, and can perform pipeline connectivity detection and defect detection. The defect detection levels are level three and level four.

[0029] As a preferred embodiment, the ultrasonic transducer operates at a frequency of 12kHz and is capable of both self-transmission and self-reception.

[0030] In one preferred embodiment, the main control system circuit includes an FPGA or STM32 minimum system, DAC and ADC chips, SDRAM or other memory chips.

[0031] In a preferred embodiment, the device's WiFi module is connected to antenna 2 via an SMA interface.

[0032] In a preferred embodiment, the antenna 2 of the device is retractable to keep its transmitting end portion above the water surface.

[0033] In a preferred embodiment, the device charges the battery via the Type-C interface 3.

[0034] In a preferred embodiment, the rear cover 1-2 and the antenna 2 interface of the device are both sealed with waterproof rubber.

[0035] In a preferred embodiment, a groove 1-1 is provided in the middle of the device housing for connecting and fixing the buckle.

[0036] The working principle of this device is as follows:

[0037] The main control chip's program is programmed before assembly. Transmission process: The host computer sends commands via software, which are transmitted to the main control chip through the WiFi module. The main control chip outputs a digital signal, which is converted into an analog sine wave signal by a DAC and then used by a power amplifier circuit to drive the ultrasonic transducer to transmit the signal. Reception process: The transducer receives the signal and transmits it to the main control chip via an ADC. The main control chip can store the received signal and then transmit the data to the host computer via the WiFi module in Ethernet frame format. The host computer can then perform further processing upon receiving the signal.

[0038] How to use this device:

[0039] 1. Defect detection: such as Figure 5 As shown, the device is placed in the pipeline through a manhole. The host computer is wirelessly connected to the device and sends commands through the software, waiting for the reflected signal to be transmitted back. The software can automatically detect the location of the defect and identify the type of defect based on the reflected signal.

[0040] 2. Detect connectivity: such as Figure 6 As shown, one device is placed at the beginning of the pipeline through a manhole, and another device is placed at the end of the pipeline. Two host computers are connected to the two devices respectively. One host computer sends commands, and the other host computer receives signals. The software automatically determines whether the pipeline section is connected based on whether a signal is received.

[0041] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept, and these all fall within the protection scope of the present invention.

Claims

1. A wireless transmission ultrasonic sensor detection device, characterized in that: The invention comprises a housing (1) and a main control chip, a WiFi module, a DAC conversion module, an ADC conversion module, a power amplifier circuit, an operational amplifier circuit and a main control minimum system circuit, a battery, a power management circuit and an ultrasonic sensor installed in the housing (1), wherein the main control chip is connected to the DAC conversion module, the DAC conversion module is connected to the power amplifier circuit, the power amplifier circuit is connected to the ultrasonic transducer, the ultrasonic transducer is connected to the operational amplifier circuit, the operational amplifier circuit is connected to the ADC conversion module, the ADC conversion module is connected to the main control chip, the main control chip is connected to the WiFi module, and the WiFi module is connected to an antenna (2); Transmission process: The host computer sends instructions through software, which are transmitted to the main control chip through the WiFi module. The main control chip sends out digital signals that are converted into analog sinusoidal signals by the DAC module, and then driven by the power amplifier circuit to transmit signals. Receiving process: The ultrasonic transducer receives the signal and transmits it to the main control chip through the ADC conversion module. After receiving the signal, the main control chip can store it first, and then send the data to the host computer through the WiFi module via Ethernet. The host computer performs subsequent processing after receiving the signal.

2. The wireless transmission ultrasonic sensor detection device according to claim 1, characterized in that: The main control chip is FPGA or STM32.

3. The wireless transmission ultrasonic sensor detection device according to claim 1, characterized in that: The WiFi module is connected to the antenna (2) via an SMA interface.

4. The wireless transmission ultrasonic sensor detection device according to claim 1, characterized in that: The device charges the battery via the Type-C port (3).

5. The wireless transmission ultrasonic sensor detection device according to claim 1, characterized in that: The rear cover (1-2) of the housing (1) and the interface of the antenna (2) are both sealed with waterproof rubber.

6. The wireless transmission ultrasonic sensor detection device according to claim 1, characterized in that: A groove (1-1) is left in the middle of the shell (1) for connecting a fixing buckle.

7. The detection method according to any one of claims 1 to 6, characterized in that: When it is used to detect defects: the device is placed in the pipeline through the inspection well, the host computer is connected to the device through the wireless network, and the software sends instructions and waits for the reflected signal to be transmitted back. The software automatically detects the defect location and identifies the defect type based on the reflected signal; When it is used to detect connectivity: two detection devices are used, one detection device is placed at the beginning of the pipeline through the inspection well, and the other detection device is placed at the end of the pipeline. Two host computers are connected to the two devices respectively, one of which sends instructions and the other receives signals. The software automatically determines whether the section of the pipeline is connected based on whether the signal is received.

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