Quick plug-in type multifunctional vibration transmitter

Abstract

The utility model discloses a rapid plugging type multifunctional vibration transmitter. The rapid plugging type multifunctional vibration transmitter comprises a plurality of vibration signal measuring modules which can be respectively connected with different types of vibration sensors and are used for acquiring analog quantity vibration signals acquired by the corresponding vibration sensors; the ADC analog-to-digital conversion module is provided with a plurality of channels, each channel is connected with one vibration signal measuring module, and the ADC analog-to-digital conversion module is used for converting the acquired analog quantity vibration signals into digital quantity vibration signals and outputting the digital quantity vibration signals; and the microprocessor module is connected with the ADC analog-to-digital conversion module and is used for acquiring the digital quantity vibration signal. According to the rapid plugging type multifunctional vibration transmitter disclosed by the utility model, the plurality of vibration signal measurement modules which can be respectively connected with different types of vibration sensors and the plurality of ADC analog-to-digital conversion modules which are connected with the plurality of vibration signal measurement modules are arranged, so that the rapid plugging type multifunctional vibration transmitter can be connected with the different types of vibration sensors; therefore, the function diversification of the vibration transmitter is realized, and the requirement of the vibration transmitter for collecting the diversity of vibration types is met.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a quick-connect multifunctional vibration transmitter. Background Art

[0002] Vibration transmitters are mainly installed on the bearing caps of various rotating mechanical devices (such as steam turbines, compressors, motors, fans and pumps, etc.), and can measure vibration speed or vibration amplitude. It is a transmitter that generates output signals by cutting magnetic lines of force with a moving coil, so it only needs to be supplied with a DC24V power supply when working, and is easy to install and maintain. It has been widely used in thermal power plants, cement plants, water pump plants, grinding equipment, paper mills, machinery plants, fan plants, coal mine machinery, etc.

[0003] The existing vibration transmitter generally includes a vibration signal measuring module and a microprocessor module. The vibration signal measuring module is connected to the vibration sensor and sends the acquired vibration signal to the microprocessor module. The microprocessor module processes the vibration signal to obtain the vibration information of the corresponding equipment. However, since the vibration sensor is directly connected to the microprocessor module through the vibration signal measuring module, the existing vibration sensor has a single function and can generally only connect to one type of sensor, which makes it unable to meet the problem of collecting a variety of vibration types required by some projects. Utility Model Content

[0004] The utility model proposes a quick-connect multifunctional vibration transmitter in view of the above problems.

[0005] The technical means adopted by the utility model are as follows:

[0006] A quick-connect multifunctional vibration transmitter, comprising:

[0007] A plurality of vibration signal measurement modules capable of being connected to different types of vibration sensors respectively to obtain analog vibration signals collected by the corresponding vibration sensors;

[0008] An ADC analog-to-digital conversion module having multiple channels, and each of the channels is connected to a vibration signal measurement module for converting the acquired analog vibration signal into a digital vibration signal and outputting the digital vibration signal;

[0009] A microprocessor module is connected to the ADC analog-to-digital conversion module and is used to obtain the digital vibration signal.

[0010] Furthermore, there are four vibration signal measuring modules.

[0011] Furthermore, the vibration sensor is a piezoelectric acceleration sensor, an eddy current displacement sensor, a magnetoelectric velocity sensor and a key phase sensor.

[0012] Furthermore, the model of the vibration signal measurement module is AD8542.

[0013] Furthermore, the model of the ADC analog-to-digital conversion module is AD7768-4.

[0014] Compared with the prior art, the quick-connect multifunctional vibration transmitter disclosed by the utility model has the following beneficial effects: since the quick-connect multifunctional vibration transmitter disclosed by the utility model is provided with multiple vibration signal measuring modules that can be respectively connected to different types of vibration sensors and ADC analog-to-digital conversion modules connected to multiple vibration signal measuring modules, it can be connected to different types of vibration sensors, thereby realizing the diversification of the vibration transmitter functions and meeting the needs of the vibration transmitter to collect a variety of vibration types. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a circuit diagram of the quick-connect multifunctional vibration transmitter disclosed in the utility model, and the microprocessor module is not included in the diagram;

[0016] In the figure: 1. Vibration signal measurement module; 2. ADC analog-to-digital conversion module. DETAILED DESCRIPTION

[0017] like Figure 1 The utility model discloses a quick-connect multifunctional vibration transmitter, which includes:

[0018] A plurality of vibration signal measuring modules 1 which can be respectively connected to different types of vibration sensors for obtaining analog vibration signals collected by corresponding vibration sensors;

[0019] A plurality of channels are provided, and each of the channels is connected to one of the vibration signal measurement modules 1, and is used for converting the acquired analog vibration signal into a digital vibration signal and outputting the ADC analog-to-digital conversion module 2;

[0020] A microprocessor module is connected to the ADC analog-to-digital conversion module and is used to obtain the digital vibration signal.

[0021] Specifically, the multifunctional vibration transmitter disclosed in the utility model is provided with multiple vibration signal measuring modules, each vibration signal measuring module can be connected to a vibration sensor, multiple vibration signal measuring modules can be connected to different types of vibration sensors, multiple vibration signal measuring modules are connected to an ADC analog-to-digital conversion module. In this embodiment, the ADC analog-to-digital conversion module has multiple channels, and each channel is connected to a vibration signal measuring module. The ADC analog-to-digital conversion module can accept analog signals in different forms, and process the analog signals to output digital signals. Specifically, for example, the ADC analog-to-digital conversion module can receive the vibration of the piezoelectric acceleration sensor. The positive voltage signal output by the vibration signal measurement module is received, the negative voltage signal output by the proximity speed sensor through the vibration signal measurement module is received, the pulse voltage signal output by the magnetoelectric sensor through the vibration signal measurement module is received, and various signals received are processed and output digital signals, and the digital signals are output to the microprocessor module. The ADC analog-to-digital conversion module and the microprocessor module can be connected through serial ports, RS485, SPI and other interfaces and perform corresponding data transmission. After receiving the data transmitted by the ADC analog-to-digital conversion module, the microprocessor processes and analyzes the corresponding data, so as to obtain the working status of the current equipment according to the obtained vibration signal.

[0022] In a specific embodiment, there are four vibration signal measurement modules, namely U1, U2, U3 and U4. The vibration sensor is a piezoelectric acceleration sensor, an eddy current displacement sensor, a magnetoelectric velocity sensor and a key phase sensor. The model of the vibration signal measurement module is AD8542, which is U9 in the figure. The model of the ADC analog-to-digital conversion module is AD7768-4.

[0023] The AD8542 is a dual rail-to-rail input and output, single-supply amplifier with extremely low supply current and 1MHz bandwidth. The device is guaranteed to operate with a single 2.7V supply and a 5V supply. The device provides 1MHz bandwidth, and each amplifier consumes only 45μA. At the same time, it has an extremely low input bias current, so it can be used in integrators, photodiode amplifiers, piezoelectric sensors, and other applications with high source impedance. The AD8542 is optimized to maintain high gain at low supply voltages, so it can be used in active filters and gain stages. Through this module, it can be connected to different sensors to obtain the signals collected by the sensors, and can effectively ensure the accuracy of the output signals.

[0024] AD7768-4 is a 4-channel, synchronous sampling Σ-Δ analog-to-digital converter (ADC) with integrated Σ-Δ modulator and digital filter in each channel, supporting synchronous sampling of AC and DC signals. A 108dB dynamic range is achieved at a maximum input bandwidth of 110.8kHz, with typical performance of ±2ppm INL, ±50μV offset error and ±30ppm gain error. Since the device has the synchronous sampling function of AC and DC signals, it can collect different types of signals output by different types of vibration sensors, and can process the acquired signals to form digital signals for output to the microprocessor. In this embodiment, since the chip model used by the ADC analog-to-digital conversion module is AD7768-4, it has 4 channels, each channel can be connected to a vibration signal measurement module, and each vibration signal measurement module can be connected to different types of vibration sensors, thereby realizing the diversification of the functions of the vibration transmitter and the demand for the vibration transmitter to collect a variety of vibration types. In this embodiment, AD7768-4 has 4 channels, each channel has a corresponding address, so AD7768-4 can perform different processing on the analog data obtained from different address pins, thereby realizing the processing of data from different types of vibration sensors, thereby realizing the diversification of the vibration transmitter function and meeting the needs of the vibration transmitter to collect diverse vibration types.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A quick-connect multifunctional vibration transmitter, characterized in that: include: A plurality of vibration signal measurement modules capable of being connected to different types of vibration sensors respectively to obtain analog vibration signals collected by the corresponding vibration sensors; An ADC analog-to-digital conversion module having multiple channels, and each of the channels is connected to a vibration signal measurement module for converting the acquired analog vibration signal into a digital vibration signal and outputting the digital vibration signal; A microprocessor module is connected to the ADC analog-to-digital conversion module and is used to obtain the digital vibration signal.

2. The quick-connect multifunctional vibration transmitter according to claim 1 is characterized in that: The number of vibration signal measuring modules is four.

3. The quick-connect multifunctional vibration transmitter according to claim 2 is characterized in that: The vibration sensor is a piezoelectric acceleration sensor, an eddy current displacement sensor, a magnetoelectric velocity sensor and a key phase sensor.

4. The quick-connect multifunctional vibration transmitter according to any one of claims 1 to 3, characterized in that: The model of the vibration signal measurement module is AD8542.

5. The quick-connect multifunctional vibration transmitter according to claim 4 is characterized in that: The model of the ADC analog-to-digital conversion module is AD7768-4.

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