CN112037494A - Wireless vibration data acquisition device - Google Patents
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- CN112037494A CN112037494A CN202010778251.8A CN202010778251A CN112037494A CN 112037494 A CN112037494 A CN 112037494A CN 202010778251 A CN202010778251 A CN 202010778251A CN 112037494 A CN112037494 A CN 112037494A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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Abstract
The embodiment of the invention provides a wireless vibration data acquisition device which can realize reliable and stable acquisition of vibration data and has high usability. The device comprises: the system comprises a vibration sensor, a data processor, a wireless network interface, a data cache and a power supply; the data processor is respectively connected with the vibration sensor, the wireless network interface, the data cache and the power supply; the vibration sensor is used for collecting vibration data, the data processor is provided with a plurality of power consumption modes related to the working states of the data processor, the vibration sensor and the wireless network interface, and the data processor is used for selecting the corresponding power consumption mode according to the current power consumption setting requirement.
Description
Technical Field
The invention relates to the technical field of data acquisition, in particular to a wireless vibration data acquisition device.
Background
Mechanical vibration is a physical phenomenon common in engineering and daily life. The vibration has harmful side, such as destroying the normal work of the machine, shortening the service life of the machine, generating noise and the like; vibration can also be utilized, such as vibration conveying, vibration tamping, vibration crushing, vibration aging, vibration processing and the like. In order to make good use of the defects, vibration phenomena must be measured and studied, for example, based on collected vibration data.
The existing vibration data acquisition device is usually based on wired transmission, and wireless products are large in size, single in working mode, low in data precision, small in throughput, poor in data stability and low in stability and usability of vibration data acquisition due to the fact that batteries need to be replaced frequently.
Disclosure of Invention
The embodiment of the invention provides a wireless vibration data acquisition device, which is used for overcoming the defect of data loss caused by wireless network interruption in the prior art, realizing reliable and stable acquisition of vibration data and having high usability.
The embodiment of the invention provides a wireless vibration data acquisition device, which comprises: the system comprises a vibration sensor, a data processor, a wireless network interface, a data cache and a power supply;
the data processor is respectively connected with the vibration sensor, the wireless network interface, the data cache and the power supply;
the vibration sensor is used for collecting vibration data, the data processor is provided with a plurality of power consumption modes related to the working states of the data processor, the vibration sensor and the wireless network interface, and the data processor is used for selecting the corresponding power consumption mode according to the current power consumption setting requirement.
According to the wireless vibration data acquisition device of one embodiment of the invention, the power consumption modes comprise a real-time mode, a timing mode and a deep sleep mode.
According to an embodiment of the present invention, the wireless vibration data acquisition device comprises: and continuously acquiring, storing and reporting data according to a set rule, and long-term connecting the data with a server until the low-power protection is shut down or the configuration is switched.
According to an embodiment of the present invention, the timing mode includes a first timing mode and a second timing mode, and the first timing mode includes: the method comprises the following steps that a task-free period is dormant, network awakening, timing awakening and event awakening are supported during dormancy, an acquisition task is completed according to a set rule after awakening, and then the task enters the dormancy again; the second timing mode comprises: and sleeping in a task-free period, supporting timing awakening and event awakening in the sleeping period, finishing an acquisition task according to the set rule after awakening, and then entering the sleeping period again.
According to the wireless vibration data acquisition device of one embodiment of the invention, the first timing mode and the second timing mode support control of switching the power consumption mode between standby and acquisition.
According to a wireless vibration data acquisition device of an embodiment of the present invention, the deep sleep mode includes: and normally sleeping, and only supporting external awakening.
According to the wireless vibration data acquisition device provided by the embodiment of the invention, the vibration sensor specifically adopts a variable precision and variable data domain configuration mode to acquire vibration data.
According to the wireless vibration data acquisition device of one embodiment of the present invention, the data processor is further configured to perform radio frequency performance evaluation according to the quality of the acquired radio frequency signal, and set the transmission power according to the evaluated radio frequency performance.
According to the wireless vibration data acquisition device of one embodiment of the present invention, if the quality of the radio frequency signal is lower than a first threshold, the transmission power is switched to a high transmission power, and if the quality of the radio frequency signal is higher than a second threshold, the transmission power is switched to a low transmission power, where the first threshold is smaller than the second threshold.
According to the wireless vibration data acquisition device provided by the embodiment of the invention, the data processor adopts a Direct Memory Access (DMA) channel to be respectively connected with the vibration sensor, the wireless network interface and the data cache.
The wireless vibration data acquisition device provided by the embodiment of the invention is designed based on various power consumption modes, improves the energy utilization efficiency, realizes the acquisition of low-power-consumption vibration data, and improves the stability and usability of vibration data acquisition.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a wireless vibration data acquisition device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a wireless vibration data acquisition device according to an embodiment of the present invention, where the wireless vibration data acquisition device shown in fig. 1 includes: the system comprises a vibration sensor 10, a data processor 11, a wireless network interface 12, a data cache 13 and a power supply 14;
wherein, the data processor 11 is respectively connected with the vibration sensor 10, the wireless network interface 12, the data buffer 13 and the power supply 14;
the vibration sensor 10 is used for collecting vibration data, the data processor 11 is provided with a plurality of power consumption modes associated with the working states of the data processor 11, the vibration sensor 10 and the wireless network interface 12, and the data processor 11 is used for selecting the corresponding power consumption mode according to the current power consumption setting requirement.
Generally, the wireless vibration data acquisition device can use a CC3200 data processor with low power consumption and an ADXL357 vibration sensor as main components, and adopts 802.11n protocol WIFI for networking data transmission. The universal wide-voltage power supply interface design is adopted, 3-5V power supply can be tolerated, and the design adopts a lithium battery and can be switched to other power supply platforms; performing auxiliary data caching by adopting a NADA _ SD; all components in the wireless vibration data acquisition device are connected by adopting Direct Memory Access (DMA) channels; the components are integrated on a 30 x 30mm Printed Circuit Board (PCB).
Based on the description of the wireless vibration data acquisition device, under the structural schematic diagram of the wireless vibration data acquisition device, the following describes a low-power consumption power supply control method, specifically:
the data processor 11, as a core executor of power management, is designed with power consumption modes from high to low, such as real-time mode, timing mode, and deep sleep mode, in a hierarchical power management mode. Specifically, 4 power consumption modes can be designed from high to low, namely a real-time mode, a first timing mode, a second timing mode and a deep sleep mode. Each power consumption mode is defined as follows:
a real-time mode: continuously acquiring and storing data according to a set rule, acquiring reported data according to the rule, and connecting the data with a server for a long time to ensure data continuity until low-power protection is shut down or configuration switching;
a first timing mode: the sleep mode is realized during the period without the task, and the network wakeup, the timing wakeup and the event wakeup can be supported during the sleep mode; the main awakening mode is timed awakening, after awakening, the collection task is completed according to rules, and then the device enters the dormancy again;
a second timing mode: the device can sleep in a task-free period, and can support timed awakening and event awakening in the sleep period; the main awakening mode is timed awakening, after awakening, the collection task is completed according to rules, and then the device enters the dormancy again;
a deep sleep mode: and normally sleeping, and only supporting external awakening.
The first timing mode and the second timing mode can independently control the power consumption mode to be switched between standby and collection according to needs, and therefore the overall power consumption is changed.
The power consumption mode can be remotely controlled to be switched according to the power consumption and data requirements, and the operation is flexibleAnd configuring a collection task, performing refined power consumption management, and switching between power consumption levels corresponding to different power consumption modes to meet the lowest power consumption operation required by the task. Specifically, as shown in table 1 below:
TABLE 1
The following describes a low-power consumption data acquisition control method, specifically:
when the vibration sensor 10 is used for data acquisition, the data processor 11 may be set to acquire only the minimum number of data bits of interest by using a method of variable precision and variable data field configuration, for processing and transmission, so as to reduce data throughput and reduce unnecessary data throughput, so as to work with the minimum resources suitable for tasks and achieve the minimum power consumption.
The following describes a low-power-consumption radio frequency control method, specifically:
the data processor 11 performs radio frequency performance evaluation according to the acquired radio frequency signal quality, and selects appropriate transmission power according to the evaluated radio frequency performance to reduce output power consumption.
The following describes the low power consumption control flow, specifically:
after the wireless vibration data acquisition device is powered on or started, the requirements and the functional requirements are set according to the current power consumption, and the power consumption grade of the corresponding mode can be manually or automatically selected for system configuration;
when the wireless vibration data acquisition device operates, a reasonable power consumption mode is selected according to the requirement on data for configuration and transmission;
when the wireless vibration data acquisition device runs, radio frequency performance evaluation is carried out according to radio frequency signal quality sampling, if the radio frequency signal quality is reduced to be lower than a first threshold value, high transmitting power is switched, if the radio frequency signal quality is higher than a second threshold value, low transmitting power is switched, the first threshold value and the second threshold value can be selected according to the distribution situation of field signals, and the first threshold value is smaller than the second threshold value.
In conclusion, the wireless vibration data acquisition device adopts a low-power-consumption hardware architecture design and a working method design, realizes the acquisition of the wireless vibration data with low power consumption, can obviously reduce the volume of the wireless vibration data acquisition device, and improves the usability and the stability of the wireless vibration data acquisition device. And a refined and flexible power consumption management mode is used, and the energy utilization efficiency is comprehensively improved. The service cycle of the wireless vibration data acquisition device can be effectively prolonged, and the maintenance frequency is reduced.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A wireless vibration data acquisition device, comprising:
the system comprises a vibration sensor, a data processor, a wireless network interface, a data cache and a power supply;
the data processor is respectively connected with the vibration sensor, the wireless network interface, the data cache and the power supply;
the vibration sensor is used for collecting vibration data, the data processor is provided with a plurality of power consumption modes related to the working states of the data processor, the vibration sensor and the wireless network interface, and the data processor is used for selecting the corresponding power consumption mode according to the current power consumption setting requirement.
2. The wireless vibration data acquisition device according to claim 1, wherein the power consumption modes include a real-time mode, a timed mode, and a deep sleep mode.
3. The wireless vibration data acquisition device according to claim 2, wherein the real-time mode comprises: and continuously acquiring, storing and reporting data according to a set rule, and long-term connecting the data with a server until the low-power protection is shut down or the configuration is switched.
4. The wireless vibration data acquisition device of claim 2 wherein the timing mode comprises a first timing mode and a second timing mode, the first timing mode comprising: the method comprises the following steps that a task-free period is dormant, network awakening, timing awakening and event awakening are supported during dormancy, an acquisition task is completed according to a set rule after awakening, and then the task enters the dormancy again; the second timing mode comprises: and sleeping in a task-free period, supporting timing awakening and event awakening in the sleeping period, finishing an acquisition task according to the set rule after awakening, and then entering the sleeping period again.
5. The wireless vibration data collection device of claim 4, wherein said first timing mode and said second timing mode support controlling a power consumption mode to switch between standby and collection.
6. The wireless vibration data acquisition device of claim 2 wherein the deep sleep mode comprises: and normally sleeping, and only supporting external awakening.
7. The wireless vibration data collection device of claim 1, wherein the vibration sensor collects vibration data in a variable precision and variable data field configuration.
8. The wireless vibration data acquisition device according to claim 1, wherein the data processor is further configured to perform radio frequency performance evaluation according to the acquired radio frequency signal quality, and set the transmission power according to the evaluated radio frequency performance.
9. The wireless vibration data collection system of claim 8, wherein the radio frequency signal quality is lower than a first threshold, switching to high transmit power, and wherein the radio frequency signal quality is higher than a second threshold, switching to low transmit power, wherein the first threshold is less than the second threshold.
10. The wireless vibration data acquisition device according to any one of claims 1 to 9, wherein the data processor employs a Direct Memory Access (DMA) channel to connect the vibration sensor, the wireless network interface and the data cache, respectively.
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| CN113867220A (en) * | 2021-10-12 | 2021-12-31 | 中科海微(北京)科技有限公司 | Sealed tank monitoring system and monitoring method thereof |
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