CN210922986U - Pressure measuring device with abnormal vibration detection function - Google Patents
Pressure measuring device with abnormal vibration detection function Download PDFInfo
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- CN210922986U CN210922986U CN201921668470.XU CN201921668470U CN210922986U CN 210922986 U CN210922986 U CN 210922986U CN 201921668470 U CN201921668470 U CN 201921668470U CN 210922986 U CN210922986 U CN 210922986U
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Abstract
The utility model discloses a pressure measurement device with unusual vibrations detect function. The device comprises a power supply module, a microprocessor, a wireless communication module and an acceleration sensor module which are electrically connected with the microprocessor, and a pressure sensor which is connected with the microprocessor through a signal processing module. The utility model can monitor the acceleration value of the monitored object in real time while measuring the pressure normally; and when the duration time of the acceleration value exceeding the first threshold exceeds a second threshold, judging that abnormal vibration occurs, sending an alarm signal to an upper computer through a wireless communication module, and storing and synchronously uploading the pressure data, the vibration state and the current time. The utility model discloses can carry out effectual failure analysis to being monitored the thing according to synchronous pressure data and vibration state, be favorable to quick positioning failure, eliminating trouble hidden danger or troubleshooting.
Description
Technical Field
The utility model belongs to the technical field of the electronic measurement, concretely relates to pressure measurement device with unusual vibrations detect function.
Background
The existing intelligent pressure instrument is widely applied to the industries of petroleum, chemical industry, water supply, gas and the like. The intelligent pressure instrument generally measures pressure information of a medium to be measured, converts a pressure value into an electric signal and then transmits the electric signal to a user. In practical application, the measuring areas such as pipelines and tanks or the instruments themselves are often damaged or hidden troubles are generated due to the action of external force. Moreover, the process is difficult to be discovered in many times, and finally serious consequences such as leakage, even explosion and the like are caused, so that huge property and life losses are brought to users.
The existing monitoring method for the hidden danger comprises the following steps: installing video monitoring at an important position, and checking whether an observation area is normal or not in real time; installing a flowmeter, a pressure gauge and the like at two ends of the pipeline to monitor pipeline leakage; and the optical fiber temperature measurement monitors the pipeline leakage and the like. The prior art has the problems that: the user is required to pay high equipment cost and installation cost, and the real-time performance and predictability are not strong, so that the damage cannot be effectively prevented in time.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem that exists among the prior art, the utility model provides a pressure measurement device with unusual vibrations detect function.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a pressure measuring device with an abnormal vibration detecting function, comprising: the device comprises a power supply module, a microprocessor, a wireless communication module and an acceleration sensor module which are electrically connected with the microprocessor, and a pressure sensor which is connected with the microprocessor through a signal processing module. The acceleration sensor module is used for measuring the acceleration of a monitored object (such as a pipeline) in real time and sending measured acceleration data to the microprocessor, the acceleration sensor module or the microprocessor judges whether abnormal vibration exists or not according to whether the absolute value of the acceleration exceeds a first threshold value or not and whether the time exceeding the first threshold value is greater than a second threshold value or not, if the abnormal vibration exists, an alarm signal is sent to an upper computer through the wireless communication module, pressure data, the current state and the current time measured by the pressure sensor are stored and uploaded synchronously, and the current state comprises the abnormal vibration and non-abnormal vibration (or normal state).
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a set up power module, microprocessor, the wireless communication module and the acceleration sensor module of being connected with the microprocessor electricity, pass through the pressure sensor that signal processing module links to each other with microprocessor, can be in normal measuring pressure, real-time supervision is by the acceleration value of object, works as when the duration that the acceleration value exceeds first threshold value exceeds the second threshold value, has judged to have taken place unusual vibrations, sends alarm signal to the upper computer through wireless communication module, preserves and uploads pressure data, vibration state and current time in step. According to the synchronous pressure data and the vibration state, the monitored object can be effectively analyzed for faults, and the fault can be quickly positioned, hidden fault danger can be eliminated or the faults can be eliminated.
Drawings
Fig. 1 is a block diagram illustrating a pressure measuring device with an abnormal vibration detection function according to an embodiment of the present invention.
In the figure: the system comprises a microprocessor 1, a power supply module 2, a battery power supply circuit 21, a voltage stabilizing circuit 22, a voltage boosting circuit 23, a battery voltage sampling circuit 24, a pressure sensor 3, a signal processing module 4, a wireless communication module 5, an acceleration sensor module 6 and a reset module 7.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment of the utility model provides a pressure measurement device with unusual vibrations detect function, as shown in figure 1, include: the device comprises a power supply module 2, a microprocessor 1, a wireless communication module 5 and an acceleration sensor module 6 which are electrically connected with the microprocessor 1, and a pressure sensor 3 which is connected with the microprocessor 1 through a signal processing module 4. The acceleration sensor module 6 is used for measuring the acceleration of a monitored object (such as a pipeline) in real time, and sending the measured acceleration data to the microprocessor 1, the acceleration sensor module 6 or the microprocessor 1 judges whether abnormal vibration exists according to whether the absolute value of the acceleration exceeds a first threshold value and whether the time exceeding the first threshold value is greater than a second threshold value, if abnormal vibration exists, an alarm signal is sent to an upper computer through the wireless communication module 5, the pressure data, the current state and the current time measured by the pressure sensor 3 are stored and uploaded synchronously, and the current state comprises the abnormal vibration and the non-abnormal vibration (or the normal state).
In the embodiment, the device mainly comprises a power supply module 2, a microprocessor 1, a wireless communication module 5, an acceleration sensor module 6, a pressure sensor 3 and a signal processing module 4. The power supply module 2 is mainly used for providing a direct current power supply required by normal operation for other modules. The pressure sensor 3 is used for converting the monitored pressure into a voltage signal and sending the voltage signal to the signal processing module 4; the signal processing module 4 is used for performing filtering amplification and other processing on the voltage signal, converting the voltage signal into a digital signal and sending the digital signal to the microprocessor 1; the acceleration sensor module 6 is used to measure acceleration values of the monitored object. Because a microcontroller for data processing is arranged in each general acceleration sensor, the acceleration sensor module 6 can determine whether abnormal vibration occurs according to the magnitude of the acceleration value, and send the measured acceleration data and the current state to the microprocessor 1. The current state is two, if abnormal vibration exists, the current state is abnormal vibration; otherwise, the vibration is not abnormal vibration, and may be referred to as a normal state. Of course, the microprocessor 1 can also make a decision based on the acceleration value, which is also a more general option; the wireless communication module 5 is used for realizing data communication between the device and an upper computer; the microprocessor 1 is a control processing center of the device, and is mainly used for outputting various control signals to coordinate the work of each circuit module and processing signal data of input signals: processing the signal input by the signal processing module 4 to obtain pressure data; and reading the acceleration data output by the acceleration sensor module 6 in real time, and judging whether abnormal vibration exists according to the magnitude of the acceleration value. If the judgment result is that abnormal vibration exists, an alarm signal is sent to an upper computer or a user mobile phone provided with an APP through the wireless communication module 5, and pressure data, the current state and the current time measured by the pressure sensor 3 are stored and uploaded synchronously. The microprocessor 1 or the upper computer can analyze the fault of the monitored object according to the synchronous pressure data, the current state and the current time, and the fault analysis method is favorable for rapidly positioning the fault and eliminating the hidden fault danger or the fault.
It is worth mentioning that: the first threshold value and the second threshold value for determining abnormal vibrations are determined from practical experience. The first threshold is important to be selected, and is generally larger than the acceleration value for monitoring the normal vibration of the environment, and the influence of the normal vibration of the environment is eliminated in amplitude, for example, 156mg (g is gravity acceleration, and m represents one thousandth of the acceleration, namely 10) is selected as the first threshold-3). The second threshold, i.e. the time threshold, is set to eliminate the influence of the narrow pulse interference signal on the abnormal vibration detection. Because instantaneous pulse interference signals are often mixed into the circuit due to the existence of electromagnetic interference in the environment, if a time threshold is not set, the mixed pulse interference signals are judged to be abnormal vibration.
As an alternative embodiment, the acceleration sensor module 6 mainly comprises a three-axis digital acceleration sensor, and can output X, Y, Z accelerations in three mutually perpendicular directions, and the acceleration sensor module 6 or the microprocessor 1 determines whether there is abnormal vibration according to the acceleration in any direction.
The present embodiment provides a technical solution of the acceleration sensor module 6. The three-axis digital acceleration sensor can output X, Y, Z accelerations in three directions simultaneously. Whether abnormal vibration occurs can be judged according to the acceleration value in any direction, namely, the abnormal vibration can be judged as occurring as long as the acceleration value in any direction meets the condition. Of course, the current state is determined to be non-abnormal vibration only when the acceleration in the three directions of X, Y, Z does not satisfy the condition.
As an alternative embodiment, the three-axis digital acceleration sensor isLIS2DW12 model chip. LIS2DW12 judges whether there is abnormal vibration according to the acceleration of X, Y, Z in any direction, and the I passes through2The C bus transmits acceleration data in three directions to the microprocessor 1, is connected to two external interrupt pins of the microprocessor 1 through INT0 and INT1 pins, respectively, and transmits a signal indicating a current state to the microprocessor 1.
The embodiment provides a technical scheme of a three-axis digital acceleration sensor. And the three-axis digital acceleration sensor adopts an LIS2DW12TR chip. The connection method of the chip LIS2DW12 and the microprocessor 1 is as follows: through I2C bus and I of microprocessor 12The interface C is connected and used for transmitting acceleration data in three directions to the microprocessor 1; the INT0 and INT1 pins of the LIS2DW12 are connected to two external interrupt pins (e.g., INT1 and INT2) of the microprocessor 1, respectively, and transmit a signal indicating the current state to the microprocessor 1. Such as: when the absolute value of the acceleration in any one of the X, Y, Z three directions exceeds a first threshold and the duration exceeds a second threshold, the INT0 pin outputs high level, and the INT1 pin generates a high pulse signal with a fixed pulse width (triggering the microprocessor 1 to execute an interrupt program, such as waking from sleep); if the abnormal shock disappears, the INT0 pin outputs a low level, and the INT1 pin generates a high pulse signal (triggering the microprocessor 1 to execute an interrupt routine, such as switching the current state to a non-abnormal shock). LIS2DW12TR has advantages such as very high measurement accuracy, design flexibility and energy consumption are little, supports a variety of low-power consumption and low noise settings. LIS2DW12TR supports 12-14 bit outputs, and various configuration modes reduce system power consumption. At a 1.6Hz data output rate, the low power mode operating current is 380 nA. The measurement range is configurable at +/-2 g/+/-4 g/+/-8 g/+/-16 g. A resolution of up to 0.244mg is available in the industrial-scale temperature range-40 c to +85 c, both dynamic accelerations (e.g. shocks, drops) and static accelerations (e.g. tilts) can be measured.
As an alternative embodiment, the device further comprises a reset module 7 connected to the reset terminal of the microprocessor 1, the reset module 7 mainly consisting of a magnetoresistive switch model TMR 1302-T.
The embodiment provides a technical scheme for realizing remote control or wireless reset operation by the device. Due to the presence of electromagnetic interference, the device may be subject to a crash or other abnormal condition, which may require a restart. For this purpose, a reset module 7 is provided, to which the reset terminal of the microprocessor 1 is connected. For convenience of operation, the reset operation can be achieved without opening the casing (most of the components of the device are typically mounted in a metal casing), and the reset module 7 is mainly composed of a magnetoresistive switch of the model TMR 1302-T. The hand-held magnet approaches the casing to actuate the magneto-resistive switch TMR1302-T, outputting a low level reset signal to the reset terminal of the microprocessor 1 to reset it. In order to realize reliable reset, a reset mark can be drawn at the position, opposite to the magnetic resistance switch, outside the casing, so that the magnet is close to the reset mark to realize reliable reset. TMR1302 is an all-pole magnetic switch that integrates a Tunnel Magnetoresistive (TMR) sensor and CMOS technology, developed for high sensitivity, high speed, low power consumption, high precision applications. The TMR1302 adopts a TMR magnetic sensor and a CMOS integrated circuit, comprises a voltage generator, a comparator, a Schmitt trigger and a CMOS output circuit, and can convert a changed magnetic field signal into a digital voltage signal for output. TMR1302 provides temperature compensated power through an internal voltage regulator and allows a wide operating voltage range. The TMR1302 is an ideal choice for many applications with low power consumption and high performance with low operating voltage, microampere level supply current, high response frequency, and wide operating temperature range.
As an alternative embodiment, the power supply module 2 includes: the battery power supply circuit comprises a voltage stabilizing circuit 22, a booster circuit 23 and a battery voltage sampling circuit 24 which are connected with the battery power supply circuit, wherein the output end of the battery voltage sampling circuit 24 is connected with the microprocessor 1, the booster circuit 23 supplies power to the wireless communication module 5, and the voltage stabilizing circuit 22 supplies power to the microprocessor 1, the signal processing module 4, the acceleration sensor module 6 and the reset module 7; the microprocessor 1 also outputs control signals to the output control terminals of the voltage boosting circuit 23 and the voltage stabilizing circuit 22, respectively.
This embodiment provides a specific technical solution of the power supply module 2. The power supply module 2 mainly comprises a battery power supply circuit 21 for providing original energy, and a voltage stabilizing circuit 22, a voltage boosting circuit 23 and a battery voltage sampling circuit 24 which are connected with the battery power supply circuit. The output end of the battery voltage sampling circuit 24 is connected with the microprocessor 1 and is used for measuring the residual voltage of the battery power supply circuit 21; the voltage stabilizing circuit 22 outputs a direct current stabilizing voltage slightly lower than the output voltage of the battery power supply circuit 21, and supplies power to the microprocessor 1, the signal processing module 4, the acceleration sensor module 6 and the reset module 7. Since the operating voltage of the wireless communication module 5 is higher than the output voltage of the battery power supply circuit 21, a one-stage booster circuit 23 needs to be provided to supply power thereto. The battery power supply circuit 21 of the embodiment adopts 2 lithium thionyl chloride batteries, the output voltage is 3.7V, the output voltage of the voltage stabilizing circuit 22 is 3.0V, and the output voltage of the voltage boosting circuit 23 is 4.0V. In addition, for the convenience of control, the microprocessor 1 also outputs control signals to the output control ends of the voltage boosting circuit 23 and the voltage stabilizing circuit 22 respectively, so that the power supply of different modules can be controlled independently.
As an alternative embodiment, the acceleration sensor module 6 outputs the acceleration data at a frequency greater than the normal vibration frequency of the monitored environment.
The embodiment provides a technical scheme for further eliminating the influence of the normal vibration of the environment on the detection of the abnormal vibration. The technical principle is as follows: the normal vibration frequency of the environment is generally low, and as long as the acceleration data frequency is greater than the normal vibration frequency of the environment, the influence of the normal vibration of the environment on the abnormal vibration detection can be obviously weakened, for example, the data frequency is 12.5 Hz. The present embodiment is to reduce the influence of normal vibration of the environment in the frequency domain.
As an optional embodiment, the wireless communication module 5 mainly includes a communication module and an antenna, and the SIM card of the communication module is an eSIM card or a plug-in SIM card.
This embodiment provides a technical solution of the wireless communication module 5. The wireless communication module 5 includes a communication module and an antenna connected thereto. The communication module is a full-network communication module, and can work in a 2G, NB-IOT frequency band by using an eSIM card or a plug-in SIM card obtained from each operator.
As an alternative embodiment, the microprocessor 1 or the upper computer performs fault analysis on the monitored pipeline according to the synchronized pressure data, the current state and the current time according to the following method:
if abnormal vibration exists and the pressure is changed from 0 to data (not 0), the abnormal vibration is generated when the pipeline is changed from empty to normal operation;
if abnormal vibration exists and the pressure is slowly or suddenly reduced, the abnormal vibration is generated under the action of external force of the pipeline, and the pipeline begins to leak;
if there is abnormal vibration and the pressure is changed from data (not 0) to 0, the abnormal vibration is generated when the device is disassembled (or stolen);
if abnormal vibration exists and the pressure is unchanged, the abnormal vibration is generated by the action of external force on the pipeline, and the pipeline only deforms and does not start to leak.
The embodiment provides a technical scheme for analyzing the pipeline fault reason according to the synchronous pressure data, the current state and the current time when the monitored object is the pipeline. Because the change condition of the pressure data along with the time when the pipeline generates abnormal vibration is synchronously recorded, the failure analysis of the supervised pipeline can be conveniently carried out. Although the present embodiment is directed to an analysis method when the monitored object is a pipeline, the analysis result cannot be directly used for other monitored objects, but the analysis method has a general meaning.
As an alternative embodiment, the device further comprises a shell and a circuit board fixed inside the shell, the pressure sensor 3 and the antenna are installed outside the shell, and the power supply module 2, the microprocessor 1, the acceleration sensor module 6, the signal processing module 4 and the communication module are all installed on the circuit board.
This embodiment shows a mounting structure of the device. The device also includes a housing and a circuit board secured within the housing. Except that the pressure sensor 3 and the antenna are installed outside the shell, the power supply module 2, the microprocessor 1, the acceleration sensor module 6, the signal processing module and the communication module are all installed on the circuit board. The shell is generally made of metal materials, so that internal electronic components can be prevented from being corroded and damaged, and external electromagnetic interference can be shielded.
The above description is only for the description of several embodiments of the present invention, but the scope of the present invention should not be considered as the protection scope of the present invention, in which all the equivalent changes or modifications or the equal-scale enlargement or reduction etc. made according to the design spirit of the present invention should be considered as falling into the protection scope of the present invention.
Claims (8)
1. A pressure measuring device having an abnormal vibration detecting function, comprising: the system comprises a power supply module, a microprocessor, a wireless communication module and an acceleration sensor module which are electrically connected with the microprocessor, and a pressure sensor which is connected with the microprocessor through a signal processing module; the acceleration sensor module is used for measuring the acceleration of the monitored object in real time and sending the measured acceleration data to the microprocessor, the acceleration sensor module or the microprocessor judges whether abnormal vibration exists or not according to whether the absolute value of the acceleration exceeds a first threshold value or not and whether the time exceeding the first threshold value is larger than a second threshold value or not, if abnormal vibration exists, an alarm signal is sent to an upper computer through the wireless communication module, pressure data, the current state and the current time measured by the pressure sensor are stored and uploaded synchronously, and the current state comprises the abnormal vibration and the non-abnormal vibration.
2. The pressure measuring device with an abnormal-vibration detecting function according to claim 1, wherein said acceleration sensor module is mainly composed of a three-axis digital acceleration sensor capable of outputting X, Y, Z accelerations in three mutually perpendicular directions, and the acceleration sensor module or the microprocessor determines whether there is an abnormal vibration based on the acceleration in either direction.
3. The pressure measuring device with the abnormal-vibration detecting function according to claim 2, wherein the three-axis digital acceleration sensor is a LIS2DW12 type chip; LIS2DW12 judges whether there is abnormal vibration according to the acceleration of X, Y, Z in any direction, and the I passes through2The C bus will have three directionsTransmits the acceleration data to the microprocessor, is respectively connected with two external interrupt pins of the microprocessor through INT0 and INT1 pins, and transmits a signal representing the current state to the microprocessor.
4. A pressure measuring device with abnormal vibration detection function according to claim 3, characterized in that said device further comprises a reset module connected to the reset terminal of the microprocessor, the reset module mainly consisting of a magnetic resistance switch with model TMR 1302-T.
5. The pressure measuring device with an abnormal vibration detecting function according to claim 4, wherein the power supply module includes: the battery voltage sampling circuit is connected with the output end of the battery voltage sampling circuit and supplies power to the wireless communication module, and the voltage stabilizing circuit supplies power to the microprocessor, the signal processing module, the acceleration sensor module and the reset module; the microprocessor also outputs control signals to the output control ends of the booster circuit and the voltage stabilizing circuit respectively.
6. The pressure measurement device with the abnormal vibration detection function as claimed in claim 5, wherein the wireless communication module mainly comprises a communication module and an antenna, and the SIM card of the communication module is an eSIM card or a plug-in SIM card.
7. The pressure measurement device with abnormal vibration detection function as claimed in claim 6, wherein the acceleration sensor module outputs acceleration data with a frequency greater than the normal vibration frequency of the monitored environment.
8. The pressure measuring device with the abnormal vibration detecting function as claimed in claim 7, further comprising a housing and a circuit board fixed inside the housing, wherein the pressure sensor and the antenna are installed outside the housing, and the power supply module, the microprocessor, the acceleration sensor module, the signal processing module and the communication module are installed on the circuit board.
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| CN201921668470.XU CN210922986U (en) | 2019-10-08 | 2019-10-08 | Pressure measuring device with abnormal vibration detection function |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112729518A (en) * | 2020-12-24 | 2021-04-30 | 深圳中科捷飞科技有限公司 | Vibration monitoring method, device and system |
| CN113310677A (en) * | 2021-05-27 | 2021-08-27 | 南京湖博智能科技有限公司 | Fire hydrant monitoring devices |
| CN114940424A (en) * | 2022-05-30 | 2022-08-26 | 重庆紫光华山智安科技有限公司 | Elevator detection method, system, computer equipment and readable medium |
| CN114993461A (en) * | 2022-08-08 | 2022-09-02 | 成都久和建设设备有限责任公司 | System and method for detecting vibration of motor of tower crane mechanism |
| CN116879794A (en) * | 2023-09-06 | 2023-10-13 | 速源芯(东莞)能源科技有限公司 | Energy storage power failure detection early warning system |
| WO2024026952A1 (en) * | 2022-08-03 | 2024-02-08 | 北京华卓精科科技股份有限公司 | Motion table acceleration safety protection method, and apparatus |
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2019
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112729518A (en) * | 2020-12-24 | 2021-04-30 | 深圳中科捷飞科技有限公司 | Vibration monitoring method, device and system |
| CN113310677A (en) * | 2021-05-27 | 2021-08-27 | 南京湖博智能科技有限公司 | Fire hydrant monitoring devices |
| CN114940424A (en) * | 2022-05-30 | 2022-08-26 | 重庆紫光华山智安科技有限公司 | Elevator detection method, system, computer equipment and readable medium |
| CN114940424B (en) * | 2022-05-30 | 2023-10-03 | 重庆紫光华山智安科技有限公司 | Elevator detection method, system, computer equipment and readable medium |
| WO2024026952A1 (en) * | 2022-08-03 | 2024-02-08 | 北京华卓精科科技股份有限公司 | Motion table acceleration safety protection method, and apparatus |
| CN114993461A (en) * | 2022-08-08 | 2022-09-02 | 成都久和建设设备有限责任公司 | System and method for detecting vibration of motor of tower crane mechanism |
| CN114993461B (en) * | 2022-08-08 | 2022-11-04 | 成都久和建设设备有限责任公司 | System and method for detecting vibration of motor of tower crane mechanism |
| CN116879794A (en) * | 2023-09-06 | 2023-10-13 | 速源芯(东莞)能源科技有限公司 | Energy storage power failure detection early warning system |
| CN116879794B (en) * | 2023-09-06 | 2023-11-14 | 速源芯(东莞)能源科技有限公司 | Energy storage power failure detection early warning system |
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