CN210242977U - Measuring device of vibrating wire type sensor - Google Patents
Measuring device of vibrating wire type sensor Download PDFInfo
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- CN210242977U CN210242977U CN201920964753.2U CN201920964753U CN210242977U CN 210242977 U CN210242977 U CN 210242977U CN 201920964753 U CN201920964753 U CN 201920964753U CN 210242977 U CN210242977 U CN 210242977U
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- 238000001514 detection method Methods 0.000 claims abstract description 13
- 238000005259 measurement Methods 0.000 claims abstract description 13
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Abstract
The utility model provides a measuring device of a vibrating wire sensor, which comprises a detection module, a display module and a communication module; the detection module comprises a processor, a frequency reference source unit and a signal conditioning circuit; the frequency reference source unit and the signal conditioning circuit are connected with the processor; the display module comprises an LCD display circuit, and the LCD display circuit is connected with the processor; the communication module comprises a storage unit and a communication circuit; the storage unit is bidirectionally connected with the processor, the processor is connected with the communication circuit, and the communication circuit is externally connected with an upper computer; the detection module displays the measured data obtained by measurement through the display module, and transmits the measured data to the external upper computer through the communication module. The utility model discloses the commonality is strong, realizes functions such as data measurement and data transmission.
Description
Technical Field
The utility model relates to a vibration wire formula sensor excitation and measurement technical field especially relate to a measurement device of vibration wire formula sensor.
Background
In hydraulic engineering, a vibrating wire type reading instrument is often required to be used for data testing, the working principle is that a broadband pulse excitation sensor and a vibrating wire type sensor are used for generating resonance, and the natural vibration frequency of the excitation sensor is measured so as to obtain measurement data. Because the design emphasis of each product is different, the sensor can not be effectively adapted to different input signal sensors; the vibration wire type reading instrument mainly shows that complete vibration excitation cannot be realized, most vibration wire type reading instruments on the market are controlled by a single chip microcomputer, but the memory of the single chip microcomputer is small, the storage and calculation functions of a large amount of data are difficult to realize, and detection data need to be transmitted to an external processor for data processing.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides a measuring device of vibrating wire formula sensor has solved among the prior art vibrating wire formula sensor excitation and data transmission problem.
The technical scheme of the utility model is realized like this: a measuring device of a vibrating wire sensor comprises a detection module, a display module and a communication module;
the detection module comprises a processor, a frequency reference source unit and a signal conditioning circuit; the frequency reference source unit and the signal conditioning circuit are connected with the processor;
the display module comprises an LCD display circuit, and the LCD display circuit is connected with the processor;
the communication module comprises a storage unit and a communication circuit; the storage unit is bidirectionally connected with the processor, the processor is connected with the communication circuit, and the communication circuit is externally connected with an upper computer;
the detection module displays the measured data obtained by measurement through the display module, and transmits the measured data to the external upper computer through the communication module.
Optionally, the frequency reference source unit includes a chip with a model TG3225 CEN.
Optionally, the frequency response range of the vibrating wire sensor measured by the measuring device is 400HZ to 6000 HZ.
Optionally, the communication circuit is a wireless communication circuit or a wired communication circuit.
Optionally, the communication circuit includes a chip with a model CH 430.
Optionally, the upper computer is a PC, a host computer or a mobile terminal.
Optionally, the system further comprises a temperature sensor, and an output end of the temperature sensor is connected with an input end of the processor.
Optionally, the temperature acquisition precision of the temperature sensor is as follows: 0.01 ℃.
Compared with the prior art, the utility model has the advantages of it is following: the received frequency is adjusted to a reference frequency through a frequency reference source unit and is sent to a processor, the processor converts the received reference frequency into an excitation frequency in a response range of the vibrating wire type sensor, the excitation frequency and the vibrating wire type sensor resonate, and a generated excitation signal is transmitted to a signal conditioning circuit to be subjected to data processing and is provided for the processor to measure data; the processor displays the measured data, and the storage unit stores the data generated by the processor in real time in the whole measuring process; the processor is connected with the communication circuit and transmits the stored data to the upper computer through the communication circuit. The utility model discloses the commonality is strong, has realized functions such as data measurement and data transmission.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic diagram of a circuit structure in a measuring device of a vibrating wire sensor according to the present invention;
FIG. 2 is a schematic diagram of a processor in a measuring device of a vibrating wire sensor according to the present invention;
FIG. 3 is a schematic diagram of a frequency reference source in a measuring device of a vibrating wire sensor according to the present invention;
fig. 4 is a schematic diagram of a signal conditioning circuit in a measuring device of a vibrating wire sensor according to the present invention;
FIG. 5 is a schematic diagram of an LCD display circuit in a measuring device of a vibrating wire sensor according to the present invention;
fig. 6 is a schematic diagram of a storage unit in a measuring device of a vibrating wire sensor according to the present invention;
fig. 7 is a schematic diagram of a USB communication circuit in a measuring device of a vibrating wire sensor according to the present invention;
fig. 8 is a schematic diagram of a temperature sensor circuit in a measuring device of a vibrating wire sensor according to the present invention.
The attached drawings are as follows: 1, a processor; 11 a frequency reference source unit; 12 a signal conditioning circuit; 2LCD display circuit; 3 a storage unit; 31 a communication circuit; 4, an upper computer; 5 a temperature sensor; 6 vibrating wire type sensor; 7 a power supply circuit; 8, a key circuit; 9 clock circuits.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiment is only a unit embodiment of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, in a specific embodiment, a measuring apparatus of a vibrating wire sensor includes a detecting module, a display module and a communication module;
the detection module comprises a processor 1, a frequency reference source unit 11 and a signal conditioning circuit 12; the frequency reference source unit 11 and the signal conditioning circuit 12 are connected with the processor 1; the display module comprises an LCD display circuit 2, and the LCD display circuit 2 is connected with the processor 1;
the communication module comprises a storage unit 3 and a communication circuit 31; the storage unit 3 is bidirectionally connected with the processor 1, the processor 1 is connected with the communication circuit 31, and the communication circuit 31 is externally connected with the upper computer 4; if no communication module exists, the measuring device of the vibrating wire sensor can only carry out single data acquisition, and the acquired data can not realize interaction, and can only be transmitted by adopting the traditional hand-writing or other modes, so that the working efficiency is influenced, but the acquired data can not be effectively utilized.
The detection module displays the measured data obtained by measurement through the display module, and transmits the measured data to the external upper computer 4 through the communication module.
Further, as shown in fig. 2, the processor 1 selects a chip with model MSP430, and compared with a traditional wide-screen pulse excitation sensor, the excitation technology of the intelligent sensor can excite in ascending order and descending order of high-power and fine-frequency sub-bands, so as to accurately acquire the excitation frequency;
further, as shown in fig. 3, the frequency reference source unit 11 includes a chip with a model TG3225CEN, and the frequency temperature characteristic of the TG3225CEN is: 2.0X 10-6max; with a precision of up to 10-6The precision temperature compensation crystal active oscillator can obtain frequency counting with higher precision and wider range, and further accurately obtain the excitation frequency.
Further, the frequency response range of the vibrating wire sensor 6 measured by the measuring device is 400HZ to 6000 HZ. As long as the vibrating wire sensor 6 with the natural frequency within the range can obtain enough vibration energy, after the vibrating wire sensor 6 starts to vibrate, the signal conditioning circuit 12 processes the resonance signal, as shown in fig. 4, the signal conditioning circuit 12 is connected by three triodes, and mainly plays a role in amplifying the signal. The method comprises the steps of firstly measuring an approximate value of the frequency of the vibrating wire sensor 6, exciting in a small range of the approximate value, enabling the vibrating wire sensor 6 to obtain larger energy, outputting a signal with larger amplitude, and measuring a clear frequency signal again, thereby obtaining accurate data information. The detection signals are integrated and amplified by the circuit, and measurement data are output.
Further, as shown in fig. 8, in the circuit of the temperature sensor 5, the temperature sensor 5 is disposed at a point to be measured, the output end of the temperature sensor 5 is connected to the input end of the processor 1, and the processor 1 acquires the temperature value of the temperature sensor 5 in real time and calculates the frequency data of the measured resonance signal by a fixed formula to obtain the measured data value of the vibrating wire sensor 6. Specifically, the temperature sensor 5 adopts an ADC thermistor with 24bit resolution to perform temperature acquisition, and the acquisition precision of the temperature sensor 5 is as follows: 0.01 ℃, more accurate temperature compensation can be carried out on the measured frequency of each temperature value.
Further, as shown in fig. 5, the processor 1 displays the measured data through an LCD display circuit. After the data are displayed, the measured data need to be effectively stored and processed; the communication module is thus designed to store and transmit data, and comprises a memory unit 3 and a communication circuit 31, and in one embodiment, as shown in fig. 6, the memory unit 3 comprises a chip of type W25Q64, and the data storage space thereof is 64 Mb. The 25Q-series device far exceeds a common serial flash memory device in the aspects of flexibility and performance, the erasing period of the W25Q64 is as much as 10W times, data can be stored for 20 years, 2.7-3.6V voltage is supported, standard SPI is supported, dual-output/four-output SPI is also supported, and the maximum SPI clock can reach 80 Mhz. The storage unit 33 is designed to store not only the data of the system operation but also the measured value. The processor 1 stores the data in the running process into the storage unit 3, and the storage unit 3 outputs the compressed final data to the processor 1. Meanwhile, the measured data is transmitted to the external upper computer 4 by the processor 1 through the communication circuit 31. The communication circuit 31 may be a wireless communication circuit such as a WIFI communication circuit, a bluetooth communication circuit, a near field communication circuit, or a wired communication circuit such as a USB communication circuit; specifically, as shown in fig. 7, the communication circuit 31 selects a USB communication circuit, the USB communication circuit includes a chip with a model CH430, and transmits data to the external upper computer 4, specifically, the upper computer 4 may be a PC or a mobile terminal, in an embodiment, the upper computer 4 selects a PC, which not only can collect detected data information in real time, but also can perform data analysis in the background.
In a specific embodiment, the measuring device of the vibrating wire sensor further comprises a power circuit 7, a key circuit 8 and a clock circuit 9. The power supply circuit 7 supplies power to the whole system, so that the system can work normally, and when the system is in a dormant state or is stopped, the power supply output condition of partial circuits of the power supply can be controlled through the processor 1. The key circuit 8 is used for input, operation control and switching control of the whole system. The clock circuit 9 provides accurate time for the whole system;
in a specific embodiment, the measurement process is: the measuring device of the vibrating wire sensor 6 is connected with the vibrating wire sensor 6 to be measured, the internal frequency reference source unit 11 of the measuring device of the vibrating wire sensor adjusts the received frequency to the reference frequency (for example, 499.999HZ is adjusted to 500HZ) and sends the reference frequency to the processor 1, the processor 1 converts the received reference frequency into the excitation frequency in the response range of the vibrating wire sensor 6, the excitation frequency and the vibrating wire sensor 6 resonate, the generated excitation signal is transmitted to the signal conditioning circuit 12 for data processing, and the signal conditioning circuit 12 performs data integration, amplification and other processing; providing the processor 1 with measurement data; the processor 1 is connected with the display circuit, the measured data are displayed, and the storage unit 3 stores the data generated by the processor 1 in real time in the whole measuring process; the processor 1 is connected to the communication circuit 31, and transmits the stored data to the upper computer through the communication circuit.
To sum up, the utility model provides a measuring device of vibrating wire formula sensor improves through detecting element and communication unit circuit design, has not only improved the measurement accuracy of vibrating wire formula reading appearance, further carries out high-efficient the use with measured data moreover, develops the direction that provides the confession reference for follow-up engineering.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The measuring device of the vibrating wire type sensor is characterized by comprising a detection module, a display module and a communication module;
the detection module comprises a processor, a frequency reference source unit and a signal conditioning circuit; the frequency reference source unit and the signal conditioning circuit are connected with the processor;
the display module comprises an LCD display circuit, and the LCD display circuit is connected with the processor;
the communication module comprises a storage unit and a communication circuit; the storage unit is bidirectionally connected with the processor, the processor is connected with the communication circuit, and the communication circuit is externally connected with an upper computer;
the detection module displays the measured data obtained by measurement through the display module, and transmits the measured data to an external upper computer through the communication module.
2. The apparatus of claim 1, wherein the frequency reference source unit comprises a TG3225CEN chip.
3. The apparatus as claimed in claim 1, wherein the frequency response of the vibrating wire sensor measured by the measuring device is in the range of 400HZ to 6000 HZ.
4. The apparatus as claimed in claim 1, wherein the communication circuit is a wireless communication circuit or a wired communication circuit.
5. The apparatus of claim 1, wherein the communication circuit comprises a chip of type CH 430.
6. The apparatus as claimed in claim 1, wherein the host computer is a PC or a mobile terminal.
7. A vibrating wire sensor measuring device as defined in claim 1, further comprising a temperature sensor, an output of said temperature sensor being connected to an input of said processor.
8. The vibrating wire sensor measuring device according to claim 7, wherein the temperature sensor has a temperature acquisition accuracy of: 0.01 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920964753.2U CN210242977U (en) | 2019-06-25 | 2019-06-25 | Measuring device of vibrating wire type sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920964753.2U CN210242977U (en) | 2019-06-25 | 2019-06-25 | Measuring device of vibrating wire type sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210242977U true CN210242977U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920964753.2U Expired - Fee Related CN210242977U (en) | 2019-06-25 | 2019-06-25 | Measuring device of vibrating wire type sensor |
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| Country | Link |
|---|---|
| CN (1) | CN210242977U (en) |
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2019
- 2019-06-25 CN CN201920964753.2U patent/CN210242977U/en not_active Expired - Fee Related
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Granted publication date: 20200403 |