Vibrating wire signal acquisition equipment

Abstract

The utility model discloses vibrating wire signal acquisition equipment, which comprises a vibrating wire sensor, a channel switching module, a signal processing module and a controller, and is characterized in that the vibrating wire sensor is electrically connected with the controller through the channel switching module and the signal processing module; the system further comprises a satellite flash connection module which is electrically connected with the controller and used for being in communication connection with a mobile control terminal to achieve instruction receiving or data transmission. The vibration wire signal acquisition device has the advantages that the star flash connection module electrically connected with the controller is additionally arranged, the star flash connection module can be connected with Bluetooth and WIFI at the same time, and when the vibration wire signal acquisition device is installed at a high place and is inconvenient to directly operate, the Bluetooth connection device can be used; a mobile control terminal such as a mobile phone end or a computer end sends an instruction to debug the vibrating wire signal acquisition equipment, and assists in recalibrating the initial frequency mode of the vibrating wire sensor; when the vibrating wire signal acquisition device is installed in a place with WIFI, networking data transmission can be carried out by using the WIFI function of the star flash connection module.

Description

Technical Field

[0001] The utility model relates to the technical field of data monitoring, and in particular to a vibrating wire signal acquisition device. Background Technique

[0002] Vibrating wire sensors play an important role in the safety monitoring of reservoirs, mainly used for measuring and monitoring key parameters such as the structural stability, water level change, and leakage situation of reservoir dams. The following are the specific functions of the vibrating wire sensor 5 in the safety monitoring of reservoirs:

[0003] Structural stability monitoring: Vibrating wire sensors can be installed at key parts of reservoir dams, such as the dam body, dam foundation, and dam shoulder, to monitor parameters such as the stress, strain, and displacement of the dam. By monitoring these parameters in real time, abnormal changes in the dam structure can be detected in a timely manner, providing a scientific basis for the safe operation of the dam.

[0004] Water level monitoring: Vibrating wire sensors can be used to measure the water level change of the reservoir. By monitoring the water level data in real time, important information can be provided for reservoir operation, flood control and disaster reduction, water resources management, etc.

[0005] Leakage monitoring: Vibrating wire sensors can be used to monitor the leakage situation of reservoir dams. By monitoring the leakage volume in real time, leakage problems of the dam can be detected in a timely manner, providing a basis for the repair and reinforcement of the dam.

[0006] Temperature monitoring: Vibrating wire sensors can be used to monitor the temperature change of reservoir dams. By monitoring the temperature data in real time, a basis can be provided for the temperature stress analysis and temperature control measures of the dam.

[0007] In short, vibrating wire sensors have a wide range of applications in the safety monitoring of reservoirs, can effectively improve the safety management level of reservoir dams, and provide a strong guarantee for the normal operation of reservoirs and disaster prevention and mitigation.

[0008] At present, some of the installed vibrating wire signal acquisition devices are installed indoors, and some management rooms even have WiFi; some are installed outdoors on poles. For some devices installed outdoors on poles, due to the high installation position of the devices, ladders need to be moved during on-site debugging later to view the device interface, which is very inconvenient. Content of the Utility Model

[0009] The problem to be solved by the utility model is to provide a vibrating wire signal acquisition device.

[0010] One technical solution adopted by the present utility model to solve the above problems is: A vibrating wire signal acquisition device, including a vibrating wire sensor, a channel switching module, a signal processing module and a controller, the vibrating wire sensor is electrically connected to the controller through the channel switching module and the signal processing module; further including a StarFlash connection module, the StarFlash connection module is electrically connected to the controller, and is used for communicating with a mobile control terminal to realize receiving instructions or transmitting data.

[0011] Preferably, the signal processing module includes an exciting circuit and a pickup circuit, the exciting circuit is used to send an exciting signal to stimulate the vibrating wire sensor to be collected selected and connected by the channel switching module, and the pickup circuit is used to amplify and shape the oscillation signal generated by the vibrating wire sensor to be collected and feedback it to the controller.

[0012] Compared with the prior art, the advantages of the present utility model are that a StarFlash connection module electrically connected to the controller is added, which can connect Bluetooth and WIFI at the same time. When the vibrating wire signal acquisition device is installed in a relatively high place such as a field pole and it is inconvenient to directly operate the vibrating wire signal acquisition device, a Bluetooth connection device can be used, and a mobile control terminal such as a mobile phone or a computer can send instructions to debug the vibrating wire signal acquisition device and assist in recalibrating the initial frequency mode of the vibrating wire sensor. Moreover, the concurrent connection number of the StarFlash connection module is much higher than that of Bluetooth, up to 500 times that of Bluetooth, which enables the StarFlash connection module to support the simultaneous connection of more devices; when the vibrating wire signal acquisition device is installed in a place with WIFI, the WIFI function of the StarFlash connection module can be used to connect to the network and transmit data.

[0013] As an improvement, there are multiple vibrating wire sensors, and the channel switching module between the vibrating wire sensors and the signal processing module includes a channel switching chip and relays respectively corresponding to and connected to the vibrating wire sensors; the channel switching chip is connected to the relays and is used to control each relay to conduct or cut off the electrical connection between the corresponding vibrating wire sensor and the signal processing module.

[0014] As an improvement, the controller is connected with a Flash module. The Flash module is a storage module, which can store the collected data in the storage chip of the Flash module. When a disconnection occurs, after reconnecting, the stored data in the storage chip of the Flash module can be re-uploaded.

[0015] As an improvement, the controller is connected with a 485 transceiver module. The 485 transceiver module can convert the UART serial port signal into a 485 differential signal and send the 485 differential signal to the host computer through a wired transmission method. Such a communication method can ensure the stability and security of data transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the connection block diagram of the present utility model.

[0017] Figure 2 It is the control diagram of the vibrating wire sensor by the control module of the present utility model.

[0018] Figure 3 It is the controller chip of the present utility model and its peripheral circuit diagram.

[0019] Figure 4 It is the power module chip of the present utility model and its peripheral circuit diagram.

[0020] Figure 5 It is the star flash connection module chip of the present utility model and its peripheral circuit diagram.

[0021] Figure 6 It is the optical fiber transceiver module chip of the present utility model and its connection circuit diagram.

[0022] Figure 7 It is the 4G communication module chip of the present utility model and its connection circuit diagram.

[0023] Figure 8 It is the circuit diagram of the vibration pickup circuit and the excitation circuit of the signal processing module of the present utility model.

[0024] Figure 9 It is the circuit diagram of the channel switching module chip of the present utility model and the relay controlled by it. Detailed implementation manners

[0025] The following makes an explanation of the exemplary embodiments of the present utility model with reference to the accompanying drawings, including various details of the embodiments of the present utility model to facilitate understanding. It should be considered that they are merely exemplary. For the sake of clarity inside the box, the communication wires and wires inside the box are not drawn. Therefore, those of ordinary skill in the art should recognize that various changes and modifications can be made to the embodiments described here without departing from the scope and spirit of the present utility model. Similarly, for the sake of clarity and conciseness, the descriptions of well-known functions and structures are omitted below.

[0026] This preferred embodiment is Figure 1 shown as a vibrating wire signal acquisition device, including a power module 1, a controller (control module in the figure) 2, a signal processing module 3, a channel switching module 4, and a vibrating wire sensor 5 that are electrically connected. In addition, it also includes a 485 transceiver module 6 (485 module in the figure), a 4G communication module 7 (4G module in the figure), a star flash connection module 8 (star flash module in the figure), and a Flash module 9 for external communication connection.

[0027] The controller 2 can be a single-chip microcomputer. As Figure 3 shown, the chip U11 of the controller 2 has a model of GD32F450, and this chip is an excellent one with very good stability among domestic 32-bit chips.

[0028] The controller 2 is electrically connected to the signal processing module 3. The signal processing module 3 is divided into an exciting circuit and a vibration pickup circuit as shown in Figure 8 the figure. As shown in Figure 2 the figure, the exciting circuit sends a PWM wave with variable frequency to the chip U12 through the controller 2 to excite the sensor to vibrate. The exciting circuit is used to send out an exciting signal, and the exciting signal excites the vibrating wire sensor 5 connected to this channel through the channel selection module 4. After the vibrating wire sensor 5 connected to this channel generates an oscillation signal, the oscillation signal is transmitted to the vibration pickup circuit. The vibration pickup circuit amplifies the oscillation signal through the chip U7, and then uses the chip U10 to perform shaping processing on the amplified oscillation signal, and feeds it back to the controller 2 to obtain the frequency and device parameters of the vibrating wire sensor 5 connected to this channel. The frequency and device parameters of the vibrating wire sensor 5 are generated in the UART serial port signal format.

[0029] The power supply module 1 as shown in Figure 4 the figure includes overvoltage protection and power conversion functions. The resistor D1 functions to prevent reverse connection, and the device will not be burned out if the positive and negative power supplies are connected reversely. The fuse F1 functions for current protection to prevent the device from being burned out by large current. The chip U3 and resistors R2, R3, R4, R5, R6, capacitor C1, triode Q1, and thyristor Q2 form an overvoltage protection circuit. When the voltage is too high, the thyristor Q2 conducts to absorb the surge voltage. The chip U1 functions for voltage conversion, converting the input voltage into a 5V output. The chip U2 functions for voltage conversion, converting the input voltage into a 3.3V voltage to supply power to the subsequent chips. The light-emitting diode D2 serves as an indicator light, and lighting indicates normal power supply. The resistor R1 functions for current limiting.

[0030] The controller 2 is electrically connected to the 4G communication module 7 and the XingFlash connection module 8 in the form of a UART serial port. The 4G communication module 7 as shown in Figure 7 the figure has a chip EC200. The 4G communication module 7 transmits data with the TX and RX serial ports of the GD32F450 in the form of a serial port, and transmits the collected data to the server. The XingFlash connection module 8 as shown in Figure 5As shown, it is also electrically connected to the controller 2 in the form of a UART serial port. The concurrent connection count supported by XingFlash is much higher than that of Bluetooth, up to 500 times that of Bluetooth, which enables XingFlash to support simultaneous connections of more devices. Security is emphasized in the design, and advanced encryption and protection mechanisms are adopted to ensure the security and privacy of user data. XingFlash technology is divided into two modes: SLE and SLB. The SLE mode is for low-power, low-latency applications such as keyboards, mice, gamepads, and headphones, which are similar to Bluetooth application scenarios but have better performance; while the SLB mode is for high-rate, high-quality data transmission such as tablets, TVs, and speakers, which is similar to the application field of WiFi. Therefore, WiFi can be used for encrypted connection to transmit the collected data without worrying about data leakage; it can also be used for Bluetooth communication with the devices of the debugging personnel to facilitate on-site device debugging.

[0031] The Flash module 9 is a storage module. As Figure 6 shown, its chip uses P25Q40SH, which is electrically connected to the controller 2 through an SPI interface and can store the collected data in the chip. In case the module drops the line, after it resumes online, the stored data in the Flash module 9 can be re-uploaded.

[0032] The 485 transceiver module 6 can convert the UART serial port signal into a 485 differential signal and send the 485 differential signal to the host computer through a wired transmission method. Such a communication method can ensure the stability and security of data transmission.

[0033] Generally, a reservoir will be equipped with several to dozens of vibrating wire sensors 5. Considering reducing the total investment cost and the usage amount of reservoir equipment, a relay switching method is adopted to enable one device to collect data from multiple vibrating wire sensors 5. The channel switching module 4 is as Figure 9 shown. Its chip U6 is electrically connected to the controller 2. By controlling the levels of 8 pins from QA to QH through the A, CLK, and CLR pins, the conduction and closing of the corresponding triodes are then controlled, and then the relay channels are controlled to be attracted or disconnected, so that the sensor signals can be transmitted to the signal processing module 3 through the relay.

[0034] The above specific implementation manners do not constitute a limitation on the protection scope of the present utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A vibrating wire signal acquisition device, comprising a vibrating wire sensor, a channel switching module, a signal processing module, a controller and a power supply module which are electrically connected. The vibrating wire sensor is electrically connected to the controller through the channel switching module and the signal processing module, and is characterized in that, It further includes a SparkLink connection module, which is electrically connected to the controller and used for communicating with a mobile control terminal to receive instructions or transmit data; the power supply module includes a zener diode D1, a fuse F1, an overvoltage protection circuit composed of a chip U3, resistors R2, R3, R4, R5, R6, a capacitor C1, a triode Q1, and a thyristor Q2 that are electrically connected, a chip U1 that converts the input voltage into a 5V output, and a chip U2 that converts the input voltage into a 3.3V voltage to supply power to the subsequent chips. The output end of the chip U2 is connected to the ground end of the chip U2 through a series-connected current-limiting resistor R1 and a light-emitting diode D2.

2. The vibrating wire signal acquisition device according to claim 1, characterized in that The signal processing module includes an excitation circuit and a vibration pickup circuit. The excitation circuit is used to generate an excitation signal to excite the vibrating wire sensor to be collected selected and connected by the channel switching module, and the vibration pickup circuit is used to amplify and shape the oscillation signal generated by the vibrating wire sensor to be collected and feedback it to the controller.

3. The vibrating wire signal acquisition device according to claim 2, wherein There are multiple vibrating wire sensors. The channel switching module between the vibrating wire sensors and the signal processing module includes a channel switching chip and relays connected to the vibrating wire sensors in one-to-one correspondence; the channel switching chip is connected to the relays and is used to control the conduction or cutoff of the electrical connection between each relay and the corresponding vibrating wire sensor and the signal processing module.

4. A vibrating string signal acquisition device according to claim 1, characterized in that, The controller is connected to a Flash module.

5. A vibrating string signal acquisition device according to claim 1, characterized in that, The controller is connected to a 485 transceiver module.

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