CN211927076U

CN211927076U - Vibration signal detection and acquisition integrated sensor

Info

Publication number: CN211927076U
Application number: CN202020309456.7U
Authority: CN
Inventors: 李献文; 谭树彬; 吴俊新
Original assignee: Shenyang Kewangtong Information Technology Co ltd
Current assignee: Shenyang Kewangtong Information Technology Co ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-11-13
Anticipated expiration: 2030-03-13

Abstract

The utility model discloses a vibration signal detects and gathers integration sensor relates to vibration signal's detection and collection technical field, is disturbed and gather the single problem of signal easily in transmission process to analog signal, now proposes following scheme, including detecting element and digital signal acquisition unit, detecting element includes response unit, signal conditioning circuit, low pass filter, integral module and secondary integral module. The utility model discloses can carry out the integrated design with the detection and the collection of vibration signal, gather the acceleration simultaneously, speed, the vibration signal of three kinds of different grade types of displacement, directly trun into the vibration signal to the mode that digital signal adopted the bus and convey, its 485 communication module conveys digital signal through the paired line with 485 bus mode, simultaneously with acceleration, speed, three kinds of signal output of displacement, convey the host computer system with the signal real-time online, the interference killing feature of its transfer process is strong, more be favorable to the development of modern science and technology.

Description

Vibration signal detection and acquisition integrated sensor

Technical Field

The utility model relates to a vibration signal's detection and collection technical field especially relate to a vibration signal detects and gathers integration sensor.

Background

At present, vibration characteristics of a plurality of devices need to be detected on an industrial field, the traditional mode of an analog sensor and a data acquisition unit is increasingly restricted, and a single type of signal cannot meet the requirement, so that three vibration signals of acceleration, speed and displacement are required to be used and analyzed frequently.

With the continuous development of related technologies such as sensor technology, communication technology, computer technology and the like, instruments and meters are gradually developed towards digitization and networking, that is, not only various control devices are digitized, but also sensor signals are developed towards digitization from simulation in the transmission process, and scattered sensors are required to be connected through a certain network to realize centralized collection and management, that is, communication among the sensors, various operation terminals and controllers and communication among different controllers are specially processed into a network, so that an integrated sensor for detecting and collecting vibration signals is required.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of vibration signal detects and gathers integration sensor has solved analog signal and has disturbed and gather the single problem of signal easily in transmission process.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a vibration signal detection and acquisition integrated sensor comprises a detection unit and a digital signal acquisition unit, and is characterized in that the detection unit comprises an induction element, a signal conditioning circuit, a low-pass filter, a primary integration module and a secondary integration module, and the digital signal acquisition unit comprises an ADC (analog-to-digital converter) module, a storage module, a CPU (central processing unit) module, a clock module and a 485 communication module;

the induction element is electrically connected with the signal conditioning circuit, the signal conditioning circuit is electrically connected with the low-pass filter, the low-pass filter is electrically connected with the primary integration module, the primary integration module is electrically connected with the secondary integration module, the low-pass filter, the primary integration module and the secondary integration module are electrically connected with the ADC module, the ADC module is electrically connected with the CPU module, and the CPU module is electrically connected with the storage module, the clock module and the communication module.

Preferably, the sensor, the signal conditioning circuit, the low-pass filter, the ADC module and the clock module are all electrically connected.

Preferably, the detection unit and the digital signal acquisition unit are integrally designed, and the detection signal is directly transmitted through the digital signal.

Preferably, the 485 communication module transmits the acquired digital signal in a 485 bus manner.

Preferably, the primary integration module and the secondary integration module directly convert the detected vibration acceleration signal into a vibration speed signal and a vibration displacement signal for output.

Preferably, the primary integration module, the secondary integration module and the ADC module output three different types of vibration signals, i.e., vibration acceleration, vibration velocity and vibration displacement, at the same time.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses can carry out the integrated design with the detection and the collection of vibration signal, gather the acceleration simultaneously, speed, the vibration signal of three kinds of different grade types of displacement, directly trun into the vibration signal to the mode that digital signal adopted the bus and convey, its 485 communication module conveys digital signal through the paired line with 485 bus mode, simultaneously with acceleration, speed, three kinds of signal output of displacement, convey the host computer system with the signal real-time online, the interference killing feature of its transfer process is strong, the real-time good, more be favorable to the development of modern science and technology.

Drawings

Fig. 1 is the utility model provides a vibration signal detects and gathers the structural schematic diagram of integration sensor.

In the figure: the device comprises an induction element 1, a signal conditioning circuit 2, a low-pass filter 3, an ADC module 4, a storage module 5, a CPU module 6, a clock module 7, a 8485 communication module, a primary integration module 9 and a secondary integration module 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1, the vibration signal detection and acquisition integrated sensor comprises a detection unit and a digital signal acquisition unit, and is characterized in that the detection unit comprises an induction element 1, a signal conditioning circuit 2, a low-pass filter 3, a primary integration module 9 and a secondary integration module 10, and the digital signal acquisition unit comprises an ADC module 4, a storage module 5, a CPU module 6, a clock module 7 and a 485 communication module 8;

the inductive element 1 is electrically connected with the signal conditioning circuit 2, the signal conditioning circuit 2 is electrically connected with the low-pass filter 3, the low-pass filter 3 is electrically connected with the primary integration module 9, the primary integration module 9 is also electrically connected with the secondary integration module 10, the low-pass filter 3, the primary integration module 9 and the secondary integration module 10 are electrically connected with the ADC module 4, the ADC module 4 is electrically connected with the CPU module 6, and the CPU module 6 is electrically connected with the storage module 5, the clock module 7 and the 485 communication module 8.

Induction element 1, signal conditioning circuit 2, low pass filter 3, ADC module 4 and clock module 7 are electric connection, detecting element and digital signal acquisition unit integrated design, directly convey the detected signal through digital signal, 485 communication module 8 conveys the digital signal of gathering with the mode of 485 bus, primary integral module 9 and secondary integral module 10 carry out the output with the vibration acceleration signal direct conversion vibration speed and the vibration displacement signal that detect, primary integral module 9, secondary integral module 10 and ADC module 4 export the vibration acceleration simultaneously, the vibration signal of three kinds of different grade types of vibration speed and vibration displacement.

In the embodiment, firstly, an original vibration signal is collected by a piezoelectric sensor sensing element 1 for measuring vibration acceleration, a weak electric signal output by the sensing element 1 is amplified and conditioned by a signal conditioning circuit 2, high-frequency noise in the signal is filtered by a low-pass filter 3, then an integration module built by an operational amplification circuit and a resistance capacitor is used for processing, the weak electric signal is converted into a vibration speed signal and a vibration displacement signal respectively through a primary integration 9 and a secondary integration 10, three paths of analog signals are simultaneously converted into corresponding digital signals through an ADC module 4, then the digital signals are operated and packaged by a CPU module 6, a middle operation and processing result of the CPU module 6 is stored in a storage module 5, an operation and processing message of the CPU module 6 is transmitted to an upper computer through a 485 communication module 8 according to a 485 communication protocol, and a clock module 7 is used for generating a clock signal, the direct current power supply supplies power to each part.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A vibration signal detection and acquisition integrated sensor comprises a detection unit and a digital signal acquisition unit, and is characterized in that the detection unit comprises an induction element (1), a signal conditioning circuit (2), a low-pass filter (3), a primary integration module (9) and a secondary integration module (10), and the digital signal acquisition unit comprises an ADC module (4), a storage module (5), a CPU module (6), a clock module (7) and a 485 communication module (8);

the induction element (1) is electrically connected with the signal conditioning circuit (2), the signal conditioning circuit (2) is electrically connected with the low-pass filter (3), the low-pass filter (3) is electrically connected with the primary integration module (9), the primary integration module (9) is electrically connected with the secondary integration module (10), the low-pass filter (3), the primary integration module (9) and the secondary integration module (10) are electrically connected with the ADC module (4), the ADC module (4) is electrically connected with the CPU module (6), and the CPU module (6) is electrically connected with the storage module (5), the clock module (7) and the 485 communication module (8).

2. The integrated sensor for detecting and collecting vibration signals according to claim 1, wherein the sensor element (1), the signal conditioning circuit (2), the low pass filter (3), the ADC module (4) and the clock module (7) are all electrically connected.

3. The integrated sensor for detecting and collecting vibration signal of claim 1, wherein the detecting unit and the digital signal collecting unit are integrally designed to directly transmit the detecting signal by digital signal.

4. The integrated vibration signal detecting and collecting sensor as claimed in claim 1, wherein said 485 communication module (8) transmits the collected digital signal in 485 bus manner.

5. The vibration signal detection and collection integrated sensor according to claim 1, wherein the primary integration module (9) and the secondary integration module (10) directly convert the detected vibration acceleration signal into vibration speed and vibration displacement signals for output.

6. The integrated sensor for detecting and collecting vibration signals according to claim 1, wherein the primary integration module (9), the secondary integration module (10) and the ADC module (4) output vibration signals of three different types, namely vibration acceleration, vibration speed and vibration displacement.