CN109743644B - Vibrating wire collecting device and method - Google Patents
Vibrating wire collecting device and method Download PDFInfo
- Publication number
- CN109743644B CN109743644B CN201811639377.6A CN201811639377A CN109743644B CN 109743644 B CN109743644 B CN 109743644B CN 201811639377 A CN201811639377 A CN 201811639377A CN 109743644 B CN109743644 B CN 109743644B
- Authority
- CN
- China
- Prior art keywords
- vibrating wire
- microprocessor
- transistor
- excitation
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a vibrating wire acquisition device and a method, wherein the device comprises a sensor port circuit, an excitation signal generation circuit, an amplification circuit, a microprocessor, a narrow-band Internet of things transmission module and a power supply module; the serial interface of the microprocessor is connected with the excitation input end through the excitation signal generating circuit; the vibrating wire signal output end is connected with an IO port of the microprocessor through an amplifying circuit; the microprocessor is connected with the narrow-band Internet of things transmission module through an IO port. The invention has the advantages of low power consumption, improved cruising ability and suitability for long-term monitoring.
Description
Technical Field
The invention relates to the technical field of monitoring, in particular to a vibrating wire collecting device and a vibrating wire collecting method.
Background
In the field of building engineering technology, pressure, stress, osmotic pressure, settlement, tension and other relevant data of a building or a structure, which are related to system safety, are generally monitored through parameters such as frequency of a vibrating wire sensor. Because the frequency signal has the characteristics of good anti-interference characteristic in the transmission process and easy long-distance transmission, the vibrating wire sensor is widely applied in the engineering field. Meanwhile, the monitoring object is relatively fixed, and the monitoring period is long. The structure of the vibrating wire sensor at least comprises an exciting coil and a vibrating wire. For example, the chinese patent publication No. CN 205449100U. The vibrating wire may be steel wire with magnetism or magnet. When the vibrating wire sensor is used, a voltage signal with a fixed value is loaded on the exciting coil through the vibrating wire collecting device, so that the exciting coil generates a magnetic field, the vibrating wire generates kinetic energy, and a free oscillation signal is generated. There is an approximate range of natural frequencies of oscillation of the vibrating wire sensor, typically 400 + 4500 HZ. According to the principle of resonance in physics, a vibrating wire resonates when the frequency of an excitation voltage signal applied to the vibrating wire sensor is close to or equal to the natural frequency of the vibrating wire of the sensor. The vibrating wire collecting device has the disadvantages that the power supply voltage signal loaded to the exciting coil is too high due to the loading of the voltage signal with a fixed value, the higher the power consumption of the power supply module is, the worse the cruising ability of the power supply module is, and the risk that the vibrating wire collecting device is exhausted to use up electric energy and cannot collect and transmit tasks is easily caused. In addition, when the traditional wireless transmission module transmits data of vibrating wire signals, the power consumption is high, so that the electric energy of the power supply module is quickly consumed, the standby time of the vibrating wire acquisition device is short, the endurance is poor, and the power supply module needs to be frequently replaced to complete automatic acquisition and transmission tasks. In addition, the existing vibrating wire acquisition device is not provided with a low-power-consumption system, and the system occupies larger power supply energy, so that the problems of short standby time and poor cruising ability of the vibrating wire acquisition device are caused. Although the conventional vibrating wire collecting device is usually provided with a UPS (uninterrupted power supply), the cruising ability of the conventional vibrating wire collecting device cannot meet the long-term monitoring requirement.
Disclosure of Invention
The invention aims to overcome the defects and provides a vibrating wire acquisition device with low power consumption and a method.
In order to solve the technical problems, the technical scheme of the invention is as follows: a vibrating wire acquisition device comprises a sensor port circuit, an excitation signal generation circuit, an amplification circuit, a microprocessor, a narrow-band Internet of things transmission module and a power supply module; the sensor port circuit comprises an N-type first transistor, an N-type second transistor and an exciting coil of a vibrating wire sensor, the first transistor and the second transistor are both bipolar transistors or field effect transistors, the drain electrode or the collector electrode of the first transistor is connected with one end of the exciting coil, the common intersection point of the first transistor and the exciting coil is the vibrating wire signal output end of the sensor port circuit, the other end of the exciting coil is connected with the drain electrode or the collector electrode of the second transistor, the common intersection point of the second transistor and the exciting coil is the exciting input end of the sensor port circuit, the source electrode or the emitter electrode of the first transistor is grounded, the source electrode or the emitter electrode of the second transistor is grounded, and the grid electrode or the base electrode of the first transistor is connected with one IO port of the microprocessor, the grid electrode or the base electrode of the second transistor is connected with the other IO port of the microprocessor; the serial interface of the microprocessor is connected with the excitation input end through the excitation signal generating circuit; the vibrating wire signal output end is connected with an IO port of the microprocessor through an amplifying circuit; the microprocessor is connected with the narrow-band Internet of things transmission module through an IO port; the power module supplies power for the excitation signal generating circuit, the amplifying circuit, the microprocessor and the narrow-band Internet of things transmission module.
Further, the vibrating wire collecting device provided by the invention is characterized in that the microprocessor is a single chip microcomputer, a complex programmable logic device, a digital signal processor or a field programmable gate array device.
Further, in the vibrating wire collecting device provided by the invention, the amplifying circuit is an operational amplifier or a power amplifier.
Further, in the vibrating wire collecting device provided by the invention, the excitation signal generating circuit is an adjustable booster circuit, the adjustable booster circuit comprises a booster chip and a digital potentiometer, a power pin of the booster chip is connected with a power supply, an output pin of the booster chip is grounded through a first inductor and a first capacitor, a common intersection point of the first inductor and the first capacitor is an output end of the excitation signal generating circuit, a first resistor is connected between a control pin and an output pin of the booster chip, the control pin of the booster chip is also connected with one end of the digital potentiometer, and the other end of the digital potentiometer is a control end of the excitation signal generating circuit.
Further, according to the vibrating wire collecting device provided by the invention, the Boost chip is a Boost circuit.
In order to solve the above technical problem, another technical solution of the present invention is: according to the vibrating wire acquisition method, the microprocessor loads a square wave excitation voltage signal to an excitation input end of a sensor port circuit step by step from low to high by switching off a second transistor, switching on a first transistor and controlling an excitation signal generation circuit, so that the excitation voltage signal passes through an excitation coil, the first transistor and a ground to form a current conduction loop, after the current passes through the excitation coil, the excitation coil generates a magnetic field, and the magnetic field enables a vibrating wire of the vibrating wire sensor to generate kinetic energy so that the vibrating wire sensor generates a vibrating wire signal; the microprocessor controls the excitation signal generating circuit not to provide a square wave excitation voltage signal to an excitation input end, switches off the first transistor and switches on the second transistor, so that the excitation coil forms a current conducting loop through the second transistor and the ground, the excitation coil resonates with a vibration signal of a vibrating wire to generate a millivolt-level alternating voltage signal, the millivolt-level alternating voltage signal on the excitation coil is amplified by the vibrating wire signal output end through the amplifying circuit and then is transmitted to the microprocessor, and the microprocessor collects the vibrating wire signal of the vibrating wire sensor; and the microprocessor transmits the vibrating wire signal of the vibrating wire sensor out through the narrow-band Internet of things transmission module.
Further, according to the vibrating wire acquisition method provided by the invention, a real-time operating system is embedded in the microprocessor, a power consumption monitoring unit is arranged in the real-time operating system and is responsible for counting the task execution condition of the microprocessor, and when the power consumption monitoring unit monitors that the task of the real-time operating system is not required to be executed, the task is disconnected from the microprocessor, and/or the power supply of a circuit corresponding to the task is disconnected.
Further, according to the vibrating wire acquisition method provided by the invention, the sleep awakening unit is arranged in the real-time operating system, initially, the microprocessor is in a working mode, and the vibrating wire acquisition device executes a vibrating wire signal acquisition task and/or a vibrating wire signal transmission task; when the sleep awakening unit is triggered, the microprocessor enters a sleep mode, and the vibrating wire acquisition device does not execute vibrating wire signals and/or transmit tasks; and when the dormancy awakening unit is triggered again, the microprocessor awakens to be in a working mode, and the vibrating wire acquisition device resumes executing vibrating wire signals and/or transmitting tasks.
Further, in the vibrating wire collecting method provided by the invention, the sleep awakening unit is an automatic sleep awakening unit formed by a timer in the microprocessor.
Further, in the vibrating wire collecting method provided by the invention, the sleep wakeup unit is a manual sleep wakeup unit formed by connecting an external trigger circuit with an IO port of the microprocessor.
According to the vibrating wire acquisition device and method provided by the invention, the excitation signal at the excitation input end of the sensor port circuit is the square wave excitation voltage signal output by the excitation signal generation circuit, and the square wave excitation voltage signal is loaded to the excitation input end from low to high step by step, so that the excitation coil is ensured to obtain a magnetic field to excite the vibrating wire, and meanwhile, an overhigh excitation voltage signal is not required to be input to the excitation input end, the energy loss of a power supply module is less, the energy waste is avoided, and the power consumption is reduced. Compared with other wireless transmission modules in the prior art, the narrow-band internet of things transmission module has the advantages of focusing small data volume and low speed, so that the power consumption can be reduced, and the cruising ability of the power module can be improved. Therefore, the invention is suitable for the requirement of long-term monitoring.
Drawings
FIG. 1 is a schematic circuit diagram of a vibrating wire pick-up device according to an embodiment of the present invention;
FIG. 2 is a circuit schematic of an excitation signal generation circuit of an embodiment of the present invention;
FIG. 3 is a diagram of a vibrating wire signal waveform;
fig. 4 is a waveform diagram of an alternating voltage signal sampled by an excitation coil.
Shown in the figure: 100. the device comprises a vibrating wire acquisition device 110, a sensor port circuit 120, an excitation signal generation circuit 130, an amplification circuit 140, a microprocessor 150, a narrow-band Internet of things transmission module 160 and a power supply module.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
referring to fig. 1, an embodiment of the invention provides a vibrating wire collecting apparatus 100, which includes a sensor port circuit 110, an excitation signal generating circuit 120, an amplifying circuit 130, a microprocessor 140, a Narrow Band Internet of Things (NB-IoT) transmission module 150, and a power supply module 160.
Wherein the sensor port circuit 110 includes a first transistor T1 of N type and a second transistor T2 of N type and a driving coil L of the vibrating wire sensor, the first transistor T1 and the second transistor T2 may be bipolar transistors or field effect transistors, a drain or a collector of the first transistor T1 is connected to one end of the driving coil L, a common intersection of the first transistor T1 and the driving coil L is a vibrating wire signal output terminal B of the sensor port circuit 110, the other end of the driving coil L is connected to a drain or a collector of the second transistor T2, a common intersection of the second transistor T2 and the driving coil L is a driving input terminal a of the sensor port circuit 110, a source or an emitter of the first transistor T1 is grounded GND, a source or an emitter of the second transistor T2 is grounded GND, a gate or a base of the first transistor T1 is connected to one IO port of the microprocessor 140, the gate or base of the second transistor T2 is connected to another IO port of the microprocessor 140; the serial interface SPI of the microprocessor 140 is connected to the excitation input terminal a through the excitation signal generation circuit 120; the vibrating wire signal output end B is connected with an IO port of the microprocessor 140 through an amplifying circuit 130; the microprocessor 140 is connected with the narrowband internet of things transmission module 150 through an IO port; the power module 160 provides power for the excitation signal generating circuit 120, the amplifying circuit 130, the microprocessor 140 and the narrowband internet of things transmission module 150.
In the vibrating wire collecting device 100 provided by the embodiment of the present invention, the microprocessor 140 may be a single chip Microcomputer (MCU), a Complex Programmable Logic Device (CPLD), a Digital Signal Processor (DSP), or a field programmable gate array device (FPGA).
In the vibrating wire collecting apparatus 100 provided in the embodiment of the present invention, the amplifying circuit 130 is an operational amplifier or a power amplifier. I.e. an amplifying circuit as known in the art.
Referring to fig. 2, in the vibrating wire collecting apparatus 100 according to the embodiment of the present invention, the excitation signal generating circuit 120 includes, but is not limited to, an adjustable voltage boosting circuit, the adjustable voltage boosting circuit includes a voltage boosting chip 121 and a digital potentiometer 122, a power supply pin of the voltage boosting chip 121 is connected to a power supply VCC, an output pin of the voltage boosting chip 121 is connected to a ground GND through a first inductor L1 and a first capacitor C1, a common intersection point of the first inductor L1 and the first capacitor C1 is an output end of the excitation signal generating circuit 120, a first resistor R1 is connected between a control pin Ctrl of the voltage boosting chip 121 and an output pin Vout, the control pin Ctrl of the voltage boosting chip 121 is further connected to one end of the digital potentiometer 122, and the other end of the digital potentiometer 122 is a control end of the excitation signal generating circuit 120. The Boost chip 121 is a Boost circuit. The control pin Ctrl of the boost chip 121 is internally connected to a reference voltage, and the microprocessor 140 adjusts the different resistance values of the digital potentiometer, and compares the divided voltage of the first resistor R1 with the reference voltage, so as to adjust the output voltage of the output pin Vout of the boost chip 121, thereby achieving the purpose of adjusting the voltage. The excitation input a of sensor port circuit 110 is loaded through an LC transmission network formed by a first inductor L1 and a first capacitor C1. The first inductor L1 and the first capacitor C1 are both energy storage elements, and the first capacitor C1 has dual functions of voltage doubling and filtering.
The excitation signal generating circuit 120 of the embodiment of the invention can be other high-frequency switching power supplies, and the high-frequency switching power supplies have the energy conversion efficiency of 90-95%, have higher working frequency, and have the efficiency 10-20% higher than that of the traditional booster circuit. High frequency switching power supplies also have the advantage of low energy transfer losses compared to other analog power supplies.
The embodiment of the invention also provides a vibrating wire collecting method based on the vibrating wire collecting device 100 of the above embodiment, the microprocessor 140 loads a square wave excitation voltage signal to the excitation input end a of the sensor port circuit 110 from low to high step by turning off the second transistor T2, turning on the first transistor T1 and controlling the excitation signal generating circuit 120, so that the excitation voltage signal forms a current conducting loop through the excitation coil L, the first transistor T1 and the ground GND, and the excitation coil L generates a magnetic field after the current passes through the excitation coil L, the magnetic field causes the vibrating wire V of the vibrating wire sensor to generate kinetic energy and the vibrating wire sensor to generate a vibrating wire signal 201, as shown in fig. 3, t on the abscissa represents time, the ordinate represents the amplitude of the vibrating wire signal 201, the intersection point of the abscissa and the ordinate represents the origin O, and the reciprocal of the vibrating wire signal 201 in one period of the abscissa represents the frequency signal. The microprocessor 140 controls the excitation signal generating circuit 120 not to provide a square wave excitation voltage signal to the excitation input terminal a, and turns off the first transistor T1 and turns on the second transistor T2, so that the excitation coil L forms a current conduction loop through the second transistor T2 and the ground GND, the vibrating wire V of the vibrating wire sensor generates a free oscillation signal, the excitation coil L resonates with the vibration signal of the vibrating wire V to generate a millivolt-level alternating voltage signal 202, as shown in fig. 4, T of the abscissa represents time, the ordinate represents amplitude of the alternating voltage signal 202, the intersection of the abscissa and the ordinate is the origin O, the phase of the alternating voltage signal 202 is opposite to that of the vibrating wire signal 201 of the vibrating wire V, and the period is the same and the frequency is the same. A millivolt-level alternating voltage signal on the exciting coil L is amplified by the amplifying circuit 130 through the vibrating wire signal output end B and then transmitted to the microprocessor 140, so that the microprocessor 140 collects vibrating wire signals of the vibrating wire sensor; the microprocessor 140 transmits the vibrating wire signal of the vibrating wire sensor through the narrow-band internet of things transmission module 150. When the first transistor T1 and the second transistor T2 are turned on simultaneously, the sensor port circuit 110 of the embodiment of the present invention has both ends of the excitation coil L grounded to GND, and the instantaneous high voltage signal or the electrostatic signal loaded on the excitation coil L is released through the transistors and the ground GND, thereby playing a role in electrostatic discharge protection for the vibrating wire collecting device 100.
Referring to fig. 3 and 4, after the vibrating wire signal 201 oscillates freely, the absolute values of the amplitudes of the positive half cycle and the negative half cycle of the vibrating wire signal 201 are the same, so in order to further reduce power consumption, the vibrating wire signal may be collected by taking the negative half cycle or the positive half cycle of the vibrating wire signal 201 as a reference, and a square wave excitation voltage signal is input into the positive half cycle or the negative half cycle of the vibrating wire signal 201. For example, when a square wave excitation voltage signal is input in the positive half period of the vibrating wire signal 201, the vibrating wire signal is acquired in the positive half period of the alternating voltage signal 202 with opposite phase after resonance, which is equivalent to acquiring the vibrating wire signal in the negative half period of the vibrating wire signal 201. Since the square wave excitation voltage signal is always applied in the positive half period of the vibrating wire signal 201, because the vibrating wire V needs to accumulate energy, a weak ac voltage signal 202 after resonance cannot be obtained at the excitation coil L until enough energy is obtained to oscillate, because the natural frequency of the vibrating wire V is basically inconsistent with the frequency of the applied external forced vibration, the frequency of the input square wave excitation voltage signal varies within a frequency range, and the vibrating wire V can select the accumulated energy close to the vibrating wire V in the frequency range and then oscillate. According to the embodiment of the invention, the excitation input end A and the vibrating wire signal output end B are respectively arranged at the two ends of the excitation coil L, so that a signal processing system of the millivolt-level alternating voltage signal 202 is protected. The risk that the square wave excitation voltage signal of the excitation input end A is generally higher than a power supply VCC to damage signal processing circuits such as an amplifying circuit and a microprocessor when the excitation input end A and the vibrating wire signal output end B are at the same port is avoided.
According to the vibrating wire collecting device 100 and the vibrating wire collecting method provided by the embodiment of the invention, the excitation signal of the excitation input end A of the sensor port circuit 110 adopts the square wave excitation voltage signal output by the excitation signal generating circuit 120, and the square wave excitation voltage signal is loaded to the excitation input end A from low to high step by step, so that the excitation coil L is ensured to obtain a magnetic field to finish excitation on the vibrating wire, an overhigh excitation voltage signal is not required to be input to the excitation input end A, the energy loss of the power supply module 160 is less, the energy waste is avoided, and the power consumption is reduced. The microprocessor 140 is provided with a memory mechanism which can memorize the numerical range of the square wave excitation voltage signal for triggering the vibrating wire to vibrate, so that the numerical range of the square wave excitation voltage signal is used in the subsequent vibrating wire signal acquisition process to reduce energy loss and power consumption. The embodiment of the invention adopts the narrow-band internet of things transmission module 150 to transmit data, and has the advantages of focusing small data volume and low speed compared with other wireless transmission modules, so that the power consumption can be reduced, and the cruising ability of the power supply module 160 can be improved. The battery replacement device is particularly suitable for equipment and scenes where the battery cannot be replaced frequently. The narrow-band internet of things transmission module 150 focuses on small data volume and low-rate application, so that the power consumption of the equipment can be very small, and the endurance time of the equipment can be greatly prolonged from the past months to several years. Therefore, the embodiment of the invention is suitable for the requirement of long-term monitoring.
In order to further reduce power consumption, in the vibrating wire acquisition method provided in the embodiment of the present invention, the microprocessor 140 is embedded with a real-time operating system, and a power consumption monitoring unit is arranged in the real-time operating system and is responsible for counting task execution conditions of the microprocessor 140. The real-time operating system can realize multithreading, completes the processing of other tasks in any idle time in the vibrating wire signal acquisition process, has high efficiency, shortens the time of the acquisition process and reduces the power consumption.
In order to further reduce power consumption, in the vibrating wire acquisition method provided by the embodiment of the invention, the sleep wake-up unit is arranged in the real-time operating system, initially, the microprocessor 140 is in a working mode, and the vibrating wire acquisition device 100 executes a vibrating wire signal acquisition task and/or a vibrating wire signal transmission task; when the sleep wake-up unit is triggered, the microprocessor 140 enters a sleep mode, and the vibrating wire collecting device 100 does not execute vibrating wire signals and/or transmit tasks; when the sleep wake-up unit is triggered again, the microprocessor 140 wakes up to be in the working mode, and the vibrating wire collecting device 100 resumes executing the vibrating wire signal and/or transmitting the task. Wherein the sleep wake-up unit may be an automatic sleep wake-up unit formed by a timer inside the microprocessor 140. The sleep wake-up unit may also be a manual sleep wake-up unit formed by connecting an IO port of the microprocessor 140 with an external trigger circuit. The embodiment of the invention adopts a dormancy awakening mechanism, the current is 7 microamperes in a dormancy state, the awakening action is dozens of milliamperes, and each module of the device is in an awakening state only in a communication state, so that the power consumption is further reduced.
The vibrating wire acquisition device and the vibrating wire acquisition method provided by the embodiment of the invention have the characteristic of ultralow power consumption, long-term monitoring can be realized only by arranging the common dry battery, and the low power consumption ensures long-term efficient and stable operation of the whole device. Therefore, the device has good application prospect and is suitable for popularization and application.
The present invention is not limited to the above-described embodiments, and various changes made within the spirit and scope of the present invention are within the scope of the present invention.
Claims (10)
1. A vibrating wire acquisition device is characterized by comprising a sensor port circuit, an excitation signal generation circuit, an amplification circuit, a microprocessor, a narrow-band Internet of things transmission module and a power supply module; the sensor port circuit comprises an N-type first transistor, an N-type second transistor and an exciting coil of a vibrating wire sensor, the first transistor and the second transistor are both bipolar transistors or field effect transistors, the drain electrode or the collector electrode of the first transistor is connected with one end of the exciting coil, the common intersection point of the first transistor and the exciting coil is the vibrating wire signal output end of the sensor port circuit, the other end of the exciting coil is connected with the drain electrode or the collector electrode of the second transistor, the common intersection point of the second transistor and the exciting coil is the exciting input end of the sensor port circuit, the source electrode or the emitter electrode of the first transistor is grounded, the source electrode or the emitter electrode of the second transistor is grounded, and the grid electrode or the base electrode of the first transistor is connected with one IO port of the microprocessor, the grid electrode or the base electrode of the second transistor is connected with the other IO port of the microprocessor; the serial interface of the microprocessor is connected with the excitation input end through the excitation signal generating circuit; the vibrating wire signal output end is connected with an IO port of the microprocessor through an amplifying circuit; the microprocessor is connected with the narrow-band Internet of things transmission module through an IO port; the power module supplies power for the excitation signal generating circuit, the amplifying circuit, the microprocessor and the narrow-band Internet of things transmission module.
2. The vibrating wire collection device according to claim 1, wherein the microprocessor is a single chip, a complex programmable logic device, a digital signal processor, or a field programmable gate array device.
3. The vibrating wire pick device as claimed in claim 1, wherein the amplification circuit is an operational amplifier or a power amplifier.
4. The vibrating wire collecting device according to claim 1, wherein the excitation signal generating circuit is an adjustable booster circuit, the adjustable booster circuit comprises a booster chip and a digital potentiometer, a power supply pin of the booster chip is connected with a power supply, an output pin of the booster chip is grounded through a first inductor and a first capacitor, a common intersection point of the first inductor and the first capacitor is an output end of the excitation signal generating circuit, a first resistor is connected between a control pin and an output pin of the booster chip, the control pin of the booster chip is further connected with one end of the digital potentiometer, and the other end of the digital potentiometer is a control end of the excitation signal generating circuit.
5. The vibrating wire collection device according to claim 4, wherein the Boost chip is a Boost circuit.
6. A vibrating wire collection method is characterized in that the vibrating wire collection device according to claim 1 is adopted, the microprocessor loads a square wave excitation voltage signal to an excitation input end of a sensor port circuit step by step from low to high by turning off a second transistor, turning on a first transistor and controlling an excitation signal generation circuit, so that the excitation voltage signal passes through an excitation coil, the first transistor and a ground to form a current conduction loop, after the current passes through the excitation coil, the excitation coil generates a magnetic field, and the magnetic field enables a vibrating wire of the vibrating wire sensor to generate kinetic energy so as to enable the vibrating wire sensor to generate a vibrating wire signal; the microprocessor controls the excitation signal generating circuit not to provide a square wave excitation voltage signal to an excitation input end, switches off the first transistor and switches on the second transistor, so that the excitation coil forms a current conducting loop through the second transistor and the ground, the excitation coil resonates with a vibration signal of a vibrating wire to generate a millivolt-level alternating voltage signal, the millivolt-level alternating voltage signal on the excitation coil is amplified by the vibrating wire signal output end through the amplifying circuit and then is transmitted to the microprocessor, and the microprocessor collects the vibrating wire signal of the vibrating wire sensor; and the microprocessor transmits the vibrating wire signal of the vibrating wire sensor out through the narrow-band Internet of things transmission module.
7. The vibrating wire collection method as claimed in claim 6, wherein a real-time operating system is embedded in the microprocessor, a power consumption monitoring unit is arranged in the real-time operating system and is responsible for counting task execution conditions of the microprocessor, and when the power consumption monitoring unit monitors that the task of the real-time operating system does not need to be executed, the task is disconnected from the microprocessor and/or the power supply of a circuit corresponding to the task is disconnected.
8. The vibrating wire collecting method according to claim 7, wherein a sleep wakeup unit is arranged in the real-time operating system, initially, the microprocessor is in a working mode, and the vibrating wire collecting device performs a vibrating wire signal collecting task and/or a transmitting task; when the sleep awakening unit is triggered, the microprocessor enters a sleep mode, and the vibrating wire acquisition device does not execute vibrating wire signals and/or transmit tasks; and when the dormancy awakening unit is triggered again, the microprocessor awakens to be in a working mode, and the vibrating wire acquisition device resumes executing vibrating wire signals and/or transmitting tasks.
9. The vibrating wire collection method as claimed in claim 8, wherein the sleep wakeup unit is an automatic sleep wakeup unit formed by a timer inside the microprocessor.
10. The vibrating wire collection method according to claim 8, wherein the sleep wakeup unit is a manual sleep wakeup unit formed by connecting an IO port of the microprocessor with an external trigger circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811639377.6A CN109743644B (en) | 2018-12-29 | 2018-12-29 | Vibrating wire collecting device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811639377.6A CN109743644B (en) | 2018-12-29 | 2018-12-29 | Vibrating wire collecting device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109743644A CN109743644A (en) | 2019-05-10 |
| CN109743644B true CN109743644B (en) | 2021-11-09 |
Family
ID=66362426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811639377.6A Active CN109743644B (en) | 2018-12-29 | 2018-12-29 | Vibrating wire collecting device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109743644B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114944837B (en) * | 2022-05-31 | 2023-09-01 | 深圳市博亿精科科技有限公司 | proximity sensor circuit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0090167A2 (en) * | 1982-02-22 | 1983-10-05 | The Foxboro Company | Fiber-optic sensor for a resonant element |
| CN203489917U (en) * | 2013-10-14 | 2014-03-19 | 济南智拓物联网科技有限公司 | Intelligent data acquisition system of vibrating wire sensor |
| CN204214388U (en) * | 2014-10-22 | 2015-03-18 | 交通运输部天津水运工程科学研究所 | A kind of vibrating string extensometer wireless node apparatus |
| CN104729542A (en) * | 2015-02-15 | 2015-06-24 | 华东交通大学 | Embankment safety monitoring method based on self-adaption feedback-type vibrating wire sensor |
| CN204902997U (en) * | 2015-04-29 | 2015-12-23 | 广州市建设工程质量安全检测中心 | Vibration wire formula frequency reading appearance |
| CN106225960A (en) * | 2016-08-31 | 2016-12-14 | 成都众邦凯测科技有限公司 | A kind of single coil vibrating sensor exciting device and excitation method |
| CN108895995A (en) * | 2018-06-01 | 2018-11-27 | 华南理工大学 | A kind of wireless vibratory string strain acquirement device and its implementation based on WIFI |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7779690B2 (en) * | 2007-02-06 | 2010-08-24 | Campbell Scientific, Inc. | Vibrating wire sensor using spectral analysis |
| CN105424168A (en) * | 2015-12-01 | 2016-03-23 | 常州大学 | Multi-channel synchronization measurement apparatus of vibratory wire sensor and controlling method thereo |
| CN108759738B (en) * | 2018-09-25 | 2019-01-01 | 上海建工集团股份有限公司 | A kind of initial value adjusting device of vibrating string type strain transducer and method |
-
2018
- 2018-12-29 CN CN201811639377.6A patent/CN109743644B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0090167A2 (en) * | 1982-02-22 | 1983-10-05 | The Foxboro Company | Fiber-optic sensor for a resonant element |
| CN203489917U (en) * | 2013-10-14 | 2014-03-19 | 济南智拓物联网科技有限公司 | Intelligent data acquisition system of vibrating wire sensor |
| CN204214388U (en) * | 2014-10-22 | 2015-03-18 | 交通运输部天津水运工程科学研究所 | A kind of vibrating string extensometer wireless node apparatus |
| CN104729542A (en) * | 2015-02-15 | 2015-06-24 | 华东交通大学 | Embankment safety monitoring method based on self-adaption feedback-type vibrating wire sensor |
| CN204902997U (en) * | 2015-04-29 | 2015-12-23 | 广州市建设工程质量安全检测中心 | Vibration wire formula frequency reading appearance |
| CN106225960A (en) * | 2016-08-31 | 2016-12-14 | 成都众邦凯测科技有限公司 | A kind of single coil vibrating sensor exciting device and excitation method |
| CN108895995A (en) * | 2018-06-01 | 2018-11-27 | 华南理工大学 | A kind of wireless vibratory string strain acquirement device and its implementation based on WIFI |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109743644A (en) | 2019-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8299747B2 (en) | Single-stage zero-current switching driving circuit for ultrasonic motor | |
| CN103269132B (en) | Sensor power supply method and power supply device | |
| CN203643779U (en) | Outage wake-up circuit of ammeter metering terminal | |
| CN207459809U (en) | Self energizing sensor-based system, tire pressure monitoring system, rail temperature monitoring system | |
| CN105375652A (en) | Communication system started by wireless pulse power supply | |
| CN109743644B (en) | Vibrating wire collecting device and method | |
| CN211065048U (en) | Ultrasonic atomization piece working circuit and ultrasonic electronic cigarette | |
| CN109639179B (en) | Double-tuning efficient piezoelectric energy acquisition management circuit | |
| KR101804254B1 (en) | Active power device and method thereof | |
| CN203951440U (en) | Crystal oscillator | |
| CN210670027U (en) | Ultrasonic atomization piece full wave drive circuit, ultrasonic wave electron cigarette | |
| CN210670015U (en) | Ultrasonic atomization piece full wave drive circuit, ultrasonic wave electron cigarette | |
| CN205596033U (en) | Pulse supply circuit and passive antenna transmitter | |
| CN102364863B (en) | High-frequency power system for wireless power transmission device | |
| CN105429307B (en) | Wireless energy signal collection method, wireless sensor awakening method and its device | |
| CN104079047A (en) | Wireless charger | |
| CN2501243Y (en) | DC-DC mini boosted circuit | |
| JP6789524B2 (en) | Energy harvesting circuit | |
| CN203260184U (en) | Infrared remote controller | |
| CN108462404A (en) | Intelligent power supply system based on piezoelectric ceramics vibration environment collection of energy | |
| CN115589163A (en) | Variable-frequency low-frequency vibration energy acquisition management system | |
| CN211454407U (en) | Low-power-consumption power management circuit | |
| CN103807485A (en) | Radio frequency awakening circuit of wireless electromagnetic valve | |
| CN112165176B (en) | Two-way three-stage energy storage power supply module | |
| CN212255548U (en) | Portable partial discharge on-line tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |