CN217211193U - Transmitter for temperature and vibration integrated measurement - Google Patents
Transmitter for temperature and vibration integrated measurement Download PDFInfo
- Publication number
- CN217211193U CN217211193U CN202220593273.1U CN202220593273U CN217211193U CN 217211193 U CN217211193 U CN 217211193U CN 202220593273 U CN202220593273 U CN 202220593273U CN 217211193 U CN217211193 U CN 217211193U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- circuit
- transmitter
- unit
- vibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model relates to a changer for temperature vibration integration is measured, it includes metal casing, metal casing's top surface is equipped with the panel, and the bottom surface is equipped with plastic base, and metal casing, panel and plastic base form airtight space, be equipped with first circuit board, second circuit board, third circuit board and fourth circuit board in the metal casing from top to bottom, first circuit board, second circuit board, third circuit board and fourth circuit board pass through pillar fixed connection, form circuit board subassembly. The utility model discloses it is convenient to install, and the integrated level is high, and the safety and stability performance is good, does benefit to the popularization and application of on-line monitoring technique.
Description
Technical Field
The utility model relates to a temperature vibration changer technical field especially relates to a changer for temperature vibration integration is measured.
Background
The rotary machine is an important driving force for modern industrial production, and is important equipment which is used in a large number in basic industries such as petrochemical industry, coal mines, electric power production and the like. The operating state of the rotary machine is related to the continuity and safety of production, so that the effective state monitoring and fault diagnosis for the rotary equipment is of great significance for improving the operating reliability and utilization efficiency of the equipment. In addition, the construction of digital factories and intelligent factories puts an urgent need for the development of advanced state monitoring and fault diagnosis technologies and the improvement of the digitization level of equipment. The operating state of the rotating equipment has various expressions, such as vibration and noise increase, temperature rise vibration, structural damage and the like, and the signals contain equipment state information. At present, the intuitive temperature detection and the vibration signal measurement with rich information are the main technologies for monitoring the state of the rotary equipment, and are widely applied in actual production. Therefore, the vibration temperature online monitoring device which is convenient to install, high in integration level and capable of achieving wireless transmission has important significance for developing long-term online monitoring and fault diagnosis technologies of rotating equipment. The traditional temperature vibration online monitoring device has a great deal of inconvenience in installation, fixation, signal transmission and other links, the integration level is not high, and the popularization and the application of the online monitoring technology are not facilitated.
For example, most rotating devices have limited space for installing sensor devices, two sensors are needed to collect signals of temperature, vibration and the like, but the sensors are not installed at the same time, so that the monitoring operation needs to be performed separately on the devices with limited space, the time is wasted, and the efficiency is reduced. Therefore, a transmitter for temperature and vibration integrated measurement is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the aforesaid not enough, provide a changer for temperature vibration integration is measured, it is convenient to install, and the integrated level is high, and the safety and stability performance is good, does benefit to the popularization and application of on-line monitoring technique.
The purpose of the utility model is realized like this:
the utility model provides a changer for temperature vibration integration is measured, it includes metal casing, metal casing's top surface is equipped with the panel, and the bottom surface is equipped with plastic base, and metal casing, panel and plastic base form airtight space, be equipped with first circuit board, second circuit board, third circuit board and fourth circuit board in the metal casing from top to bottom, first circuit board, second circuit board, third circuit board and fourth circuit board pass through pillar fixed connection, form circuit board subassembly.
Furthermore, the inner wall of the metal shell is provided with a step for supporting the circuit board assembly, so that the circuit board assembly is not contacted with the plastic base.
Furthermore, the bottom surface of the plastic base is provided with a clamp spring which supports guide rail type installation and screw bolt installation.
Furthermore, the size of the plastic base is larger than the end face of the metal shell, so that the plastic base is convenient to mount.
Furthermore, the circuit board assembly of the transmitter comprises a power supply, a signal conditioning unit, a data processing unit, a current output unit and a communication functional unit.
Furthermore, the top surface of the first circuit board is provided with a state indicator lamp, a Mini USB interface, a buffer output interface, a gear selection and vibration filtering frequency selection gear.
Furthermore, the top surface of the second circuit board is a signal conditioning unit and is provided with a signal output interface, a vibration conditioning circuit, a constant current source circuit, a buffer output circuit, a temperature conditioning circuit and a signal and power input interface, and the bottom surface of the second circuit board is a current output unit and is provided with a 4-20mA current circuit.
Furthermore, the third circuit board is a communication function unit and a data processing unit, the top surface of the third circuit board is provided with an RS485 communication unit, a CPU processing unit and an analog/digital conversion circuit, and the bottom surface of the third circuit board is provided with a Flash storage unit.
Furthermore, the fourth circuit board is a power supply unit, the top surface of the fourth circuit board is provided with an EMC anti-interference circuit, and the bottom surface of the fourth circuit board is provided with a working power supply circuit.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a changer provides the power for sensor probe for the temperature vibration integration is measured, and the temperature and the vibration of rotary equipment such as monitoring fans gather the temperature process volume signal and the vibration acceleration signal of probe, carries out the sensor signal of taking care of back through analog current and digital communication interface with temperature, vibration passing frequency value and vibration characteristic quantity teletransmission to other systems after the digital signal processing.
The transmitter is divided into power supply, signal conditioning, data processing and current output, communication function units, and the signal conditioning unit buffers and filters input temperature and vibration signals. The temperature signal is a slowly-varying process quantity signal which is filtered and directly sent to a post-stage circuit for sampling. The vibration signal is instantaneous dynamic data, high-frequency noise is superposed on the signal, the signal is subjected to four-order anti-aliasing filtering and then sent to a post-stage circuit for sampling, and a precise 4-20mA current source is used for outputting corresponding temperature and vibration values.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is a front view of the present invention.
Fig. 4 is a schematic diagram of a transmitter according to the present invention.
Fig. 5 is a schematic view of the application of the present invention.
Fig. 6 is a schematic structural diagram of the temperature vibration sensor of the present invention.
Fig. 7 is a schematic circuit diagram of the front and back sides of the first circuit board according to the present invention.
Fig. 8 is a schematic circuit diagram of the front and back sides of the second circuit board according to the present invention.
Fig. 9 is a schematic circuit diagram of the front and back of the third circuit board according to the present invention.
Fig. 10 is a schematic circuit diagram of the front and back surfaces of a fourth circuit board according to the present invention.
Wherein:
Detailed Description
For a better understanding of the technical aspects of the present invention, reference will now be made in detail to the accompanying drawings. It should be understood that the following specific examples are not intended to limit the embodiments of the present invention, but are merely exemplary embodiments of the present invention. It should be noted that the description of the positional relationship of the components, such as the component a is located above the component B, is based on the description of the relative positions of the components in the drawings, and is not intended to limit the actual positional relationship of the components.
Example 1:
referring to fig. 1, the utility model relates to a be used for temperature vibration integration measuring changer, it includes changer 4, and temperature vibration sensor 1 is connected through shielded cable 2 to changer 4's one end, aviation plug 3 is connected to temperature vibration sensor 1's the other end.
The temperature sensor 17 is fixed close to the shell 12, the core body of the piezoelectric accelerometer 14 is firstly connected with the sensor mounting base in a back-to-back rigid mode, and then the shell is filled with epoxy, so that the sensor has high overall measurement accuracy.
The plug of the aviation plug 3 is matched with a special cable for use, and the protection grade can reach IP 66.
The housing 12 and the base 18 are both made of metal material to provide shielding protection for the sensor and are grounded through the fan housing at the installation site.
In order to further improve the anti-interference performance of the vibration sensor, the core body of the piezoelectric accelerometer is shielded by an independent metal shell and is fixed on a base of a probe shell through an insulating material, and the core body shell is connected with a signal ground of the sensor to prevent field environment noise from entering a vibration signal end.
Shielded cable 2 adopts four-core shielded cable, is equipped with 5 cable pins: the shielding layer is grounded at the signal processing card piece; in order to avoid the mutual influence of the temperature and vibration sensor power supplies, the sensors adopt different cable core wires for power supply, the temperature sensor adopts a constant voltage source for power supply, and the acceleration sensor (namely, a piezoelectric accelerometer) adopts a constant current source for power supply.
The temperature sensor adopts an LM35 series small-sized high-precision integrated circuit, has low output impedance, linear output and high-precision internal calibration function, and has a linear direct relation between the output voltage and the temperature.
The vibration sensor (namely the piezoelectric accelerometer) adopts an IEPE two-wire piezoelectric acceleration sensor, is powered by a constant current source output by a transmitter, and has lower power consumption; the precise charge amplifier is integrated in the sensor, so that a high-resistance anti-vibration charge signal of the piezoelectric material can be converted into a low-resistance voltage signal, the signal transmission distance is effectively increased, and the electrical interference sensitivity is reduced.
Changer 4 includes metal casing 41, metal casing 41's top surface is equipped with panel 42, and the bottom surface is equipped with plastic base 43, and metal casing 41, panel 42 and plastic base 43 form airtight space, be equipped with first circuit board 44, second circuit board 45, third circuit board 46 and fourth circuit board 47 from top to bottom in the metal casing 41, first circuit board 44, second circuit board 45, third circuit board 46 and fourth circuit board 47 pass through hexagonal support 48 fixed connection, form the circuit board subassembly, metal casing 41's inner wall is equipped with the step, supports the circuit board subassembly for the circuit board subassembly does not contact with plastic base 43.
The bottom surface of the plastic base 43 is provided with a clamp spring 49 which supports guide rail type installation and bolt and screw installation, and the plastic base 43 is designed to be widened, so that the size of the plastic base is larger than the end surface of the metal shell 41, and the plastic base is convenient to install.
The circuit board assembly of the transmitter 4 comprises a power supply, a signal conditioning unit, a data processing unit, a current output unit and a communication functional unit; a state indicator lamp, a Mini USB interface, a buffer output interface, a gear selection and vibration filtering frequency selection gear are arranged on the top surface of the first circuit board 44; the top surface of the second circuit board 45 is a signal conditioning unit and is provided with a signal output interface, a vibration conditioning circuit, a constant current source circuit, a buffer output circuit, a temperature conditioning circuit and a signal and power supply input interface, and the bottom surface of the second circuit board is a current output unit and is provided with a 4-20mA current circuit; the third circuit board 46 is a communication function unit and a data processing unit, the top surface of the third circuit board is provided with an RS485 communication unit, a CPU processing unit and an analog/digital conversion circuit, and the bottom surface of the third circuit board is provided with a Flash storage unit; the fourth circuit board 47 is a power supply unit, and the top surface thereof is provided with a power supply EMC anti-interference circuit and the bottom surface thereof is provided with a working power supply circuit.
The power supply unit uses a DC-DC isolation direct current module power supply to provide 3.3V, 5V and +/-15V working voltage and sensor power supplies for other functional circuits; in order to improve the reliability of products, the front stage of the DC-DC main power supply uses a transient absorption tube, a common mode inductor, an X capacitor, a Y capacitor and other protection filter elements to provide lightning protection and EMC protection for a signal processing card.
The signal conditioning unit buffers and filters the input temperature and the vibration signal; the temperature signal is a slowly-varying process quantity signal which is filtered and directly sent to a post-stage circuit for sampling; the vibration signal is instantaneous dynamic data, high-frequency noise is superposed on the vibration signal, and the vibration signal is subjected to four-order anti-aliasing filtering and then is sent to a post-stage circuit for sampling.
The digital signal processing unit consists of a 16-bit high-speed synchronous sampling analog-to-digital converter and a high-performance STM32F4 series microcontroller; the analog-to-digital converter converts the temperature and vibration analog signals into digital signals.
The analog-digital speed converter uses a high-speed 16-bit four-channel synchronous sampling ADC to synchronously sample temperature process quantity signals, fault voltage of a vibration sensor, vibration acceleration and vibration signals, and the ADC can work in an oversampling mode to improve the sampling signal-to-noise ratio and the effective number of the ADC.
The STM32F4 microcontroller is the core of the signal processing card, and the built-in DSP function can carry out digital filtering and FFT conversion on the digital signal output by the ADC; the microcontroller controls the ADC sampling rate by using a high-precision timer and can process digital signals according to configuration parameters; the microcontroller can detect the sensor fault according to the bias voltage of the vibration sensor and carry out system self-check by using functional modules such as built-in CRC (cyclic redundancy check) and power supply monitoring.
The microcontroller completes digital signal processing according to the configuration parameters, converts the processed temperature and vibration values into PWM duty ratio signals, transmits the PWM duty ratio signals to the current output unit after optical coupling isolation, and the module circuit outputs corresponding temperature and vibration values by using a precise 4-20mA current source.
The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All technical solutions formed by adopting equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides a changer for temperature vibration integration is measured which characterized in that: it includes metal casing (41), the top surface of metal casing (41) is equipped with panel (42), and the bottom surface is equipped with plastic base 43, and metal casing (41), panel (42) and plastic base (43) form the cuboid space, be equipped with first circuit board (44), second circuit board (45), third circuit board (46) and fourth circuit board (47) from top to bottom in metal casing (41), first circuit board (44), second circuit board (45), third circuit board (46) and fourth circuit board (47) pass through pillar fixed connection, form circuit board assembly.
2. The transmitter for temperature vibration integrated measurement according to claim 1, characterized in that: the inner wall of the metal shell (41) is provided with steps for supporting the circuit board assembly, so that the circuit board assembly is not contacted with the plastic base (43).
3. The transmitter of claim 1, wherein: the bottom surface of the plastic base (43) is provided with a clamp spring (49) which supports guide rail type installation and screw bolt installation.
4. The transmitter of claim 1, wherein: the size of the plastic base (43) is larger than the end face of the metal shell (41), and installation is facilitated.
5. The transmitter of claim 1, wherein: the circuit board assembly of the transmitter (4) comprises a power supply, a signal conditioning unit, a data processing unit, a current output unit and a communication functional unit.
6. The transmitter of claim 5, wherein: and a state indicator lamp, a Mini USB interface, a buffer output interface, a gear selection and vibration filtering frequency selection gear are arranged on the top surface of the first circuit board (44).
7. The transmitter of claim 5, wherein: the top surface of the second circuit board (45) is a signal conditioning unit and is provided with a signal output interface, a vibration conditioning circuit, a constant current source circuit, a buffer output circuit, a temperature conditioning circuit and a signal and power input interface, and the bottom surface of the second circuit board is a current output unit and is provided with a 4-20mA current circuit.
8. The transmitter of claim 5, wherein: the third circuit board (46) is a communication function unit and a data processing unit, an RS485 communication unit, a CPU processing unit and an analog/digital conversion circuit are arranged on the top surface of the third circuit board, and a Flash storage unit is arranged on the bottom surface of the third circuit board.
9. The transmitter of claim 5, wherein: the fourth circuit board (47) is a power supply unit, the top surface of the fourth circuit board is provided with an EMC anti-interference circuit, and the bottom surface of the fourth circuit board is provided with a working power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220593273.1U CN217211193U (en) | 2022-03-18 | 2022-03-18 | Transmitter for temperature and vibration integrated measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220593273.1U CN217211193U (en) | 2022-03-18 | 2022-03-18 | Transmitter for temperature and vibration integrated measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217211193U true CN217211193U (en) | 2022-08-16 |
Family
ID=82756215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220593273.1U Active CN217211193U (en) | 2022-03-18 | 2022-03-18 | Transmitter for temperature and vibration integrated measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217211193U (en) |
-
2022
- 2022-03-18 CN CN202220593273.1U patent/CN217211193U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203365535U (en) | Vehicle current collection system and car having same | |
| CN201364171Y (en) | Digital composite sensor | |
| CN217211193U (en) | Transmitter for temperature and vibration integrated measurement | |
| CN217210968U (en) | Temperature vibration integration measurement system | |
| CN102162740B (en) | Transmitter | |
| CN217210969U (en) | Temperature vibration sensor | |
| CN110823316B (en) | Capacitance signal detection circuit with interference shielding function | |
| CN202002938U (en) | Wireless wind speed detector | |
| CN104848895A (en) | Anti-intensive-impact and high-voltage-resistant temperature pressure sensor combined device | |
| CN102331294B (en) | Underground intrinsic safety type vibration acceleration sensor of coal mine | |
| CN101819060A (en) | Vibration transducer | |
| CN201697712U (en) | Vibration sensor | |
| CN211626516U (en) | Sensor probe | |
| CN204241927U (en) | PLC-485 signal conversion control device | |
| CN101509928A (en) | Apparatus for detecting engine speed by exhaust pressure | |
| CN113340516B (en) | Pressure measuring cell | |
| CN111122960A (en) | Circuit and method for multi-channel detection of branch current of LED driving circuit | |
| CN220773708U (en) | Dependent temperature measurement type electric fire monitoring detector | |
| CN221764507U (en) | Demodulation circuit of magneto-dependent angle sensor | |
| CN213714550U (en) | Infrared temperature sensor device based on CAN communication | |
| CN218724696U (en) | Noise vibration integration sensor | |
| CN220154823U (en) | Synchronous acquisition circuit and acquisition device for valve side sleeve monitoring data of converter station | |
| CN215492160U (en) | Digital dynamic torque sensor | |
| CN219977598U (en) | Multi-channel thermal resistance measuring board structure | |
| CN215910563U (en) | Intelligent logging conductivity sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |