CN112037494A - Wireless vibration data acquisition device - Google Patents

Abstract

The embodiment of the present invention provides a wireless vibration data collection device, which can realize reliable and stable collection of vibration data and has high usability. The device includes: a vibration sensor, a data processor, a wireless network interface, a data cache and a power supply; the data processor is respectively connected to the vibration sensor, the wireless network interface, the data cache and the power supply; wherein the vibration sensor is used for collecting vibration data, the data processor is provided with a variety of power consumption modes associated with the working states of the data processor, the vibration sensor and the wireless network interface, the data processor is configured to set the power consumption according to the current power consumption Select the corresponding power consumption mode according to the specific requirements.

Description

A wireless vibration data acquisition device

technical field

The present invention relates to the technical field of data collection, in particular to a wireless vibration data collection device.

Background technique

Mechanical vibration is a common physical phenomenon in engineering technology and daily life. Vibration has a harmful side, such as destroying the normal work of the machine, shortening the service life of the machine, generating noise, etc.; vibration also has a usable side, such as vibration conveying, vibration compaction, vibration crushing, vibration aging and vibration processing. In order to improve the advantages and eliminate the disadvantages, it is necessary to measure and study the vibration phenomenon, such as research based on the collected vibration data.

Existing vibration data acquisition devices are usually based on wired transmission, and wireless products have large volume, single working mode, low data accuracy, low throughput, poor data stability, and frequent battery replacement, so the stability and availability of vibration data acquisition are low. .

SUMMARY OF THE INVENTION

The embodiment of the present invention provides a wireless vibration data collection device, which is used to solve the defect of data loss caused by the interruption of the wireless network in the prior art, realize reliable and stable collection of vibration data, and has high usability.

An embodiment of the present invention provides a wireless vibration data collection device, including: a vibration sensor, a data processor, a wireless network interface, a data cache, and a power supply;

The data processor is respectively connected to the vibration sensor, the wireless network interface, the data cache and the power supply;

Wherein, the vibration sensor is used to collect vibration data, the data processor is provided with a variety of power consumption modes associated with the working states of the data processor, the vibration sensor and the wireless network interface, the The data processor is used to select a corresponding power consumption mode according to the current power consumption setting requirement.

According to the wireless vibration data acquisition device according to an embodiment of the present invention, the power consumption mode includes a real-time mode, a timing mode, and a sleep mode.

According to the wireless vibration data collection device according to an embodiment of the present invention, the real-time mode includes: continuously collecting, storing and reporting data according to set rules, and permanently connecting to the server until low-power protection shutdown or configuration switching.

According to the wireless vibration data collection device 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: sleeping during no task, supporting network wake-up, timing wake-up and Event wake-up, after waking up, complete the collection task according to the set rules, and then go to sleep again; the second timing mode includes: sleep during no task, support timing wake-up and event wake-up during sleep, and complete the collection according to the set rules after waking up task, and then go to sleep again.

According to the wireless vibration data acquisition device according to an embodiment of the present invention, the first timing mode and the second timing mode support switching between the standby and acquisition by controlling the power consumption mode.

According to the wireless vibration data collection device according to an embodiment of the present invention, the sleep mode includes: normal sleep, and only supports external wake-up.

According to the wireless vibration data collection device of an embodiment of the present invention, the vibration sensor specifically collects vibration data by means of variable precision and variable data field configuration.

According to the wireless vibration data acquisition device according to an embodiment of the present invention, the data processor is further configured to perform radio frequency performance evaluation according to the acquired radio frequency signal quality, and set the transmit power according to the evaluated radio frequency performance.

According to the wireless vibration data acquisition device of an embodiment of the present invention, if the quality of the radio frequency signal is lower than a first threshold, it switches to a high transmission power, and if the quality of the radio frequency signal is higher than a second threshold, it switches to a low transmission power , wherein the first threshold is smaller than the second threshold.

According to the wireless vibration data acquisition device according to an embodiment of the present invention, the data processor adopts a direct memory access DMA channel to connect the vibration sensor, the wireless network interface and the data cache respectively.

The wireless vibration data acquisition device provided by the embodiment of the present invention improves the energy utilization efficiency based on the design of multiple power consumption modes, realizes the acquisition of vibration data with low power consumption, and improves the stability and usability of the vibration data acquisition.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these 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 ways

In order to make the purposes, 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 accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer 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. The wireless vibration data acquisition device shown in FIG. 1 includes: a vibration sensor 10 , a data processor 11 , and a wireless network interface 12 , data cache 13 and power supply 14;

The data processor 11 is respectively connected to the vibration sensor 10, the wireless network interface 12, the data cache 13 and the power supply 14;

The vibration sensor 10 is used to collect vibration data, and the data processor 11 is provided with a variety of power consumption modes associated with the working states of the data processor 11, the vibration sensor 10 and the wireless network interface 12. The power consumption setting needs to select the corresponding power consumption mode.

Usually, the wireless vibration data acquisition device can use the low-power CC3200 data processor and the ADXL357 vibration sensor as the main components, and use the 802.11n protocol WIFI for networking data transmission. It adopts universal wide-voltage power supply interface design, which can tolerate 3-5V power supply. The design adopts lithium battery and can also be switched to other power supply platforms; NADA_SD is used for auxiliary data caching; direct memory access is used between components in the wireless vibration data acquisition device (Direct MemoryAccess, DMA) channel connection; components are integrated on a 30*30mm printed circuit board (Printed Circuit Board, PCB).

Based on the content described by the above-mentioned wireless vibration data acquisition device, and under the schematic structural diagram of the above-mentioned wireless vibration data acquisition device, the low-power power supply control method is described below, specifically:

Using the hierarchical power management mode, the data processor 11 acts as the core executor of power management, and designs power consumption modes from high to low, such as real-time mode, timing mode, and sleep mode. Specifically, four power consumption modes can be designed from high to low, which are the real-time mode, the first timing mode, the second timing mode, and the sleep mode in sequence. The power modes are defined as follows:

Real-time mode: continuously collect and store data according to the set rules, collect and report data according to the rules, and connect to the server for a long time to ensure data continuity until the low-power protection shutdown or configuration switching;

The first timing mode: sleep during no task, and can support network wake-up, timing wake-up, and event wake-up during sleep; the main wake-up mode is timing wake-up. After wake-up, the collection task is completed according to the rules, and then it goes to sleep again;

The second timing mode: sleep during no task, and can support timing wake-up and event wake-up during sleep; the main wake-up mode is timing wake-up. After wake-up, the collection task is completed according to the rules, and then it goes to sleep again;

Sleep mode: normal sleep mode, only supports external wake-up.

Wherein, the first timing mode and the second timing mode can individually control the power consumption mode to switch between standby and acquisition as needed, thereby changing the overall power consumption.

According to power consumption and data requirements, the power mode switching can be remotely controlled, flexibly configure acquisition tasks, perform refined power management, switch between power consumption levels corresponding to different power modes, and run at the lowest power consumption that suits the task requirements. . Specifically, as shown in Table 1 below:

Table 1

The following describes the low-power data acquisition control method, specifically:

When the vibration sensor 10 is collecting data, the method of variable precision and variable data field configuration is adopted, and the data processor 11 can be set to collect only the minimum amount of data bits of interest for processing and transmission, reducing data throughput , reduce unnecessary data throughput, work with the minimum resources suitable for the task, and achieve the lowest power consumption.

The following describes the low-power wireless radio frequency control method, specifically:

The data processor 11 performs radio frequency performance evaluation according to the acquired radio frequency signal quality, and selects an appropriate transmit power according to the evaluated radio frequency performance to reduce output power consumption.

The low-power control flow is described below, specifically:

After the wireless vibration data acquisition device is powered on or started, according to the current power consumption setting requirements and functional requirements, the power consumption level of the corresponding mode can be manually or automatically selected for system configuration;

When the wireless vibration data acquisition device is running, a reasonable power consumption mode is selected for configuration and transmission according to the demand for data;

When the wireless vibration data acquisition device is running, the radio frequency performance evaluation is performed according to the quality of the radio frequency signal. If the quality of the radio frequency signal drops below the first threshold, it switches to high transmit power, and if the quality of the radio frequency signal is higher than the second threshold, it switches to low transmit power The power, the first threshold and the second threshold can be selected as needed according to the distribution of on-site signals, and the first threshold is smaller than the second threshold.

To sum up, the present invention adopts low power consumption hardware architecture design and working method design, realizes the collection of wireless vibration data with low power consumption, can significantly reduce the volume of the wireless vibration data collection device, and improve the usability of the wireless vibration data collection device. and stability. Use refined and flexible power management modes to comprehensively improve energy utilization efficiency. It can effectively prolong the service cycle of the wireless vibration data acquisition device and reduce the maintenance frequency.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the 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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