Novel wireless vibration sensor suitable for intermittent work of equipment

Abstract

The utility model relates to a novel wireless vibration sensor suitable for intermittent operation of equipment. The novel wireless vibration sensor comprises a vibration sensor, a main control module, an AD conversion module, a Lora module, a characteristic value calculation module, a storage module and a power supply module, the AD conversion module is used for converting the acquired voltage analog quantity signal into a digital signal; the main control module is connected with the AD conversion module, the Lora module, the characteristic value calculation module, the storage module and the power supply module, the main control module sends a digital signal to the characteristic value calculation module for calculation, and the storage module stores a calculation result; and the Lora module communicates with superior equipment. The wireless vibration sensor judges whether equipment is in a working state or not according to an acceleration effective value of the detected equipment, and only when the equipment is in the working state, the wireless vibration sensor uploads a detected big data packet containing vibration acceleration time domain waveform and characteristic value data; the electric energy consumption of the sensor is saved, and the service life of the sensor is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of wireless vibration sensors and relates to a novel wireless vibration sensor suitable for intermittent operation of equipment. Background Art

[0002] Current wireless vibration sensors all rely on built-in batteries to work. When the sensor is working, the larger the amount of data sent and the shorter the sending interval, the more power it consumes, the faster the battery power is consumed, and the shorter the effective working time of the sensor.

[0003] When the existing wireless vibration sensor is working, no matter whether the detected device is in working state or stopped state, it uploads various parameters of the device it collects at fixed time intervals. Some parameters even include the time domain waveform of vibration acceleration.

[0004] For devices with relatively long working hours, this continuous and regular data transmission mode is still needed and meaningful by users. However, among the detected devices, a few devices have a much longer downtime than the startup time, and the startup time is not long. As a result, the various data during the downtime period are meaningless to users. If the wireless vibration sensor still sends data continuously and regularly, it consumes meaningless precious battery energy and reduces the battery life of the sensor. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a new type of wireless vibration sensor suitable for intermittent operation of equipment, which transmits collected data according to the working status of the detected equipment.

[0006] The utility model provides a novel wireless vibration sensor suitable for intermittent operation of equipment, comprising: a vibration sensor, a main control module, an AD conversion module, a Lora module, a characteristic value calculation module, a storage module and a power supply module; the vibration sensor is connected with the AD conversion module, and the AD conversion module converts a voltage analog signal regularly collected by the vibration sensor into a digital signal; the main control module is respectively connected with the AD conversion module, the Lora module, the characteristic value calculation module, the storage module and the power supply module, and the main control module sends the received digital signal to the characteristic value calculation module for calculation, and saves the calculation result to the storage module; the Lora module communicates with the upper-level equipment to send the detected data.

[0007] Furthermore, the voltage analog signal collected by the vibration sensor is acceleration time-domain waveform data.

[0008] Furthermore, the eigenvalue calculation module includes:

[0009] A first calculation unit for calculating an effective value of acceleration according to the digital signal;

[0010] a second calculation unit for calculating a peak value of acceleration according to the digital signal;

[0011] a third calculation unit for calculating acceleration kurtosis according to the digital signal;

[0012] a fourth calculation unit that calculates the effective value of the speed according to the digital signal;

[0013] A fifth calculation unit calculates a velocity peak value according to the digital signal.

[0014] Furthermore, the main control module receives the eigenvalue data calculated by the eigenvalue calculation module, and compares the acceleration effective value with the acceleration threshold. If the acceleration effective value is less than the acceleration threshold, the device is in a shutdown state, and the Lora module only transmits the eigenvalue data to the superior device; if the acceleration effective values ​​of the two timed detections are both greater than the acceleration threshold, the device is in a working state, and the Lora module simultaneously transmits the acceleration time domain waveform data and the eigenvalue data to the superior device.

[0015] Furthermore, the wireless vibration sensor also includes a temperature sensing module connected to the main control module, and the Lora module transmits temperature data to the superior device at regular intervals.

[0016] The utility model discloses a novel wireless vibration sensor suitable for intermittent operation of equipment. It can judge whether the equipment is in working state according to the effective value of acceleration of the detected equipment. Only when the equipment is in working state, the wireless vibration sensor uploads the detected large data packet containing the vibration acceleration time domain waveform and characteristic value data; thus, the power consumption of the sensor is saved and the service life of the sensor is prolonged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural block diagram of a new type of wireless vibration sensor suitable for intermittent operation of equipment in the utility model. DETAILED DESCRIPTION

[0018] like Figure 1As shown, the utility model is a new type of wireless vibration sensor suitable for intermittent operation of equipment, including: a vibration sensor, a main control module, an AD conversion module, a Lora module, an eigenvalue calculation module, a storage module and a power supply module; the vibration sensor is connected to the AD conversion module, and the AD conversion module converts the voltage analog signal collected by the vibration sensor at regular intervals into a digital signal; the main control module is respectively connected to the AD conversion module, the Lora module, the eigenvalue calculation module, the storage module and the power supply module, and the main control module sends the received digital signal to the eigenvalue calculation module for calculation, and saves the calculation result to the storage module; the Lora module communicates with the upper-level device to send the detected data.

[0019] The voltage analog signal collected by the vibration sensor is acceleration time domain waveform data.

[0020] The characteristic value calculation module includes: a first calculation unit for calculating the effective value of acceleration according to the digital signal; a second calculation unit for calculating the peak value of acceleration according to the digital signal; a third calculation unit for calculating the kurtosis of acceleration according to the digital signal; a fourth calculation unit for calculating the effective value of velocity according to the digital signal; and a fifth calculation unit for calculating the peak value of velocity according to the digital signal. Specifically, the effective value of acceleration is obtained by calculating the root mean square of the acceleration time domain waveform. The velocity time domain waveform is obtained by integrating the acceleration time domain waveform, and the effective value of velocity is obtained by calculating the root mean square of the velocity time domain waveform.

[0021] The main control module receives the eigenvalue data calculated by the eigenvalue calculation module and compares the acceleration effective value with the acceleration threshold. If the acceleration effective value is less than the acceleration threshold, the device is in shutdown state, and the Lora module only transmits the eigenvalue data to the superior device; if the acceleration effective values ​​of the two timed detections are both greater than the acceleration threshold, the device is in working state, and the Lora module simultaneously transmits the acceleration time domain waveform data and eigenvalue data to the superior device. In specific implementation, the acceleration threshold is 0.2m / s 2 .

[0022] The wireless vibration sensor also includes a temperature sensing module connected to the main control module. When the sensor is in a working state or a shutdown state, while sending acceleration time domain waveform data and characteristic value data, the Lora module also transmits temperature data to the superior device at a regular interval.

[0023] In specific implementation, the wireless vibration sensor detects vibration data every 5 minutes, and communicates with the upper-level device regularly every 5 minutes according to the device status to send the detected data.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the concept of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of wireless vibration sensor suitable for intermittent operation of equipment, characterized in that: include: Vibration sensor, main control module, AD conversion module, Lora module, eigenvalue calculation module, storage module and power supply module; the vibration sensor is connected to the AD conversion module, and the AD conversion module converts the voltage analog signal collected by the vibration sensor into a digital signal; the main control module is respectively connected to the AD conversion module, the Lora module, the eigenvalue calculation module, the storage module and the power supply module, and the main control module sends the received digital signal to the eigenvalue calculation module for calculation, and saves the calculation result to the storage module; The Lora module communicates with the upper device to send the detected data.

2. The novel wireless vibration sensor suitable for intermittent operation of equipment as claimed in claim 1 is characterized in that: The voltage analog signal collected by the vibration sensor is acceleration time domain waveform data.

3. The novel wireless vibration sensor suitable for intermittent operation of equipment as claimed in claim 2 is characterized in that: The eigenvalue calculation module comprises: A first calculation unit for calculating an effective value of acceleration according to the digital signal; a second calculation unit for calculating a peak value of acceleration according to the digital signal; a third calculation unit for calculating acceleration kurtosis according to the digital signal; a fourth calculation unit that calculates the effective value of the speed according to the digital signal; A fifth calculation unit calculates a velocity peak value according to the digital signal.

4. The novel wireless vibration sensor suitable for intermittent operation of equipment as claimed in claim 3 is characterized in that: The main control module receives the eigenvalue data calculated by the eigenvalue calculation module, and compares the acceleration effective value with the acceleration threshold. If the acceleration effective value is less than the acceleration threshold, the device is in a shutdown state, and the Lora module only transmits the eigenvalue data to the superior device; if the acceleration effective values ​​of the two timed detections are both greater than the acceleration threshold, the device is in a working state, and the Lora module simultaneously transmits the acceleration time domain waveform data and the eigenvalue data to the superior device.

5. The novel wireless vibration sensor suitable for intermittent operation of equipment as claimed in claim 4 is characterized in that: The wireless vibration sensor also includes a temperature sensing module connected to the main control module, and the Lora module transmits temperature data to the superior device at regular intervals.

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