CN204302720U - A kind of Fieldbus Based motor speed measurement device - Google Patents
A kind of Fieldbus Based motor speed measurement device Download PDFInfo
- Publication number
- CN204302720U CN204302720U CN201420775431.0U CN201420775431U CN204302720U CN 204302720 U CN204302720 U CN 204302720U CN 201420775431 U CN201420775431 U CN 201420775431U CN 204302720 U CN204302720 U CN 204302720U
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- motor speed
- measurement device
- speed measurement
- fieldbus
- interface
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Abstract
A kind of Fieldbus Based motor speed measurement device, comprise sensor interface, described sensor interface connects tachogenerator and microprocessor, microprocessor connects display, function button, bus interface and wireless lan interfaces, and bus interface is communicated with remote computer by fieldbus with wireless lan interfaces.The utility model provides a kind of Fieldbus Based motor speed measurement device, solve Problems existing in existing testing apparatus, motor speed result can be measured in real time, and carry out error analysis, connect expansion flexibly, can measure that multiple devices, data processing and transmission are easy simultaneously, environmental suitability by force, possess distributed AC servo system and disposal ability, can be used for the multiple occasions such as the calibrating of motor performance and operating state supervision.
Description
Technical field
The utility model relates to electronic technology field, particularly the Fieldbus Based motor speed measurement calibrating installation of one.
Background technology
Fieldbus refers to that one is applied to production scene, carries out the technology of two-way, serial, multinode digital communication between Survey control equipment, between Survey control equipment and supervising device.Field bus device is connected with cyber-net equipment, form an opening, distributed field bus system, it can be the automated system realizing various Survey control function using being articulated in bus, as the equipment connection of network node, realizes as PID control, error calculation, instruction control, display monitoring, optimization and keyholed back plate synthesis automation function integrally.Field bus technique has system standard opening, bus apparatus interactivity, field apparatus autonomy and the adaptive feature of system environments, can be applied in high temperature severe cold, dust, electromagnetic interference, vibrations, the complicated industrial production such as inflammable and explosive and scientific experiment environment.Field bus protocol conventional at present comprises: Profibus, FF H1, FF HSE, P-Net, ControlNet, SwiftNet, DeviceNet, Interbus etc.By the mounting cost adopting field bus technique can save Measurement and Control System, save maintenance costs, improve the reliability of system, for user provides integrated initiative more flexibly.
In industrial production and daily use, motor is a kind of equipment with extensive use, and motor speed is the important indicator weighing motor performance and operational situation, and the measurement of motor speed and error analysis are also the important steps that Motor Production Test is examined and determine.Traditional measuring methods for rotary speed of electromotor mainly adopts hand-hold type or fixed checkout equipment, obtains single by the rotary speed data of measured motor, then manually carries out the analysis of data and gathers, and then judging whether the rotating speed of motor meets index of correlation and technical requirement.Operate while existing motor speed measurement equipment does not support multiple devices, underaction in the transmission and stores processor of test data, installing and using in the particular surroundingss such as high temperature severe cold, electromagnetic interference is also inconvenient.Therefore, simple, the good environmental adaptability of system configuration, the motor speed measurement device with distributed AC servo system and disposal ability have important application prospect.
Utility model content
In order to solve the problems referred to above existed in existing testing apparatus, realize measurement mechanism Long-distance Control, connect expansion flexibly, can measure that multiple devices, data processing and transmission are easy simultaneously, environmental suitability by force, possess the target of distributed AC servo system and disposal ability, the utility model provides a kind of Fieldbus Based motor speed measurement device.
For achieving the above object, the utility model is by the following technical solutions:
A kind of Fieldbus Based motor speed measurement device, comprise sensor interface, described sensor interface connects tachogenerator and microprocessor, microprocessor connects display screen, function button, bus interface and wireless lan interfaces, and bus interface is communicated with remote computer by fieldbus with wireless lan interfaces.
Described tachogenerator is hall sensor, magnetoelectric sensor or electro-optical pickoff, stationary induction apparatus part on motor, and sensor installation is popped one's head in.
Described microprocessor comprises central processing unit and data storage.
Described bus interface comprises bus control unit, optical isolator and FPDP, the integrated field bus protocol of bus control unit and Ethernet protocol, and FPDP is outside wire link interface.
Described wireless lan interfaces is connected with the bus control unit in bus interface.
The utility model can measure motor speed result in real time, and carry out error analysis, connect expansion flexibly, can measure that multiple devices, data processing and transmission are easy simultaneously, environmental suitability by force, possess distributed AC servo system and disposal ability, can be used for the multiple occasions such as the calibrating of motor performance and operating state supervision.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is bus interface schematic diagram of the present utility model;
Fig. 3 is multiple motor speed measurement device series connection schematic diagram.
Embodiment
As shown in Figure 1, a kind of Fieldbus Based motor speed measurement device, comprise sensor interface, described sensor interface connects tachogenerator and microprocessor, microprocessor connects display screen, function button, bus interface and wireless lan interfaces, and bus interface is communicated with remote computer by fieldbus with wireless lan interfaces.Sensor interface is for receiving the turn signal of motor speed sensor input, described tachogenerator is hall sensor, magnetoelectric sensor or electro-optical pickoff and laser sensor etc., the change in electric caused by induction object obtains measuring-signal, stationary induction apparatus part on motor, can be magnet steel, photosensitive paster etc., sensor installation be popped one's head in, and obtains measuring-signal, the inner integrated shaping buffer circuit of tachogenerator, the signal after output Shaping is to sensor interface.For hall sensor, its induction object is magnetic material, such as magnet steel.Along with electric machine rotation, be fixed on the magnet steel on motor rotation axis, cause the changes of magnetic field of sensor probe front end, make inner Hall element produce Hall voltage, export measuring-signal through adjustment and amplifying circuit.For NJK series Hall element, it is made up of voltage adjuster, Hall voltage generator, differential amplifier, Schmidt trigger and open-collector output stage, be integrated in the sensor probe of a steel, there is the feature of waterproof and dustproof, electromagnetism interference, it is input as magnetic flux density, and output is a digital voltage signal.
Described microprocessor comprises central processing unit and data storage.Microprocessor unit adopts LPC2377/2378 microcontroller, it is a 16/32 ARM7TDMI-S processor, operating rate, up to 72MHz, is suitable for the application scenario such as Industry Control, medical system, and this device extends the flash storage of 16MB in processor outside.Utilize this microprocessor to carry out the process of electric machine rotation signal, adopt M/T method and cycle test method and Measuring Frequency Method to combine and carry out tachometric survey, according to the motor speed performance setting sampling time.After the tachometric survey time terminates, according to the rotary speed data recorded, calculate the maximum of motor speed, minimum value, mean error and certainty of measurement, all measurements and analysis result are stored in flash storage.
Display screen is for showing the operating state of the real-time results of motor speed measurement, statistic analysis result and device.
Function button is used for the startup of this measurement mechanism of Non-follow control, stopping and function and selects, and can check button operation information by display screen.
As shown in Figure 2, bus interface comprises bus control unit, optical isolator and FPDP.Bus control unit is integrated with field bus protocol and Ethernet protocol, Anybus CompactCom C30 chip selected by bus control unit, it is integrated with Profibus, DeviceNet, Ethernet and CAN network agreement, as communication coprocessor, the transmission carrying out data and instruction controls, and is applicable to the fieldbus of main flow and the interface management of Industrial Ethernet.Because it supports Ethernet, can provide support for Ethernet turns WLAN (wireless local area network), in bus interface, therefore extend the interface function of interworking wireless local area net.Optical isolator is used for the isolation of bus signals and flush bonding processor signal, and FPDP provides outside wire link interface, as twisted-pair feeder, cable or optical cable interface.Described wireless lan interfaces is connected with the bus control unit in bus interface, provides the input/output interface of wireless signal, supporting industry WIFI.
The utility model can by teleinstruction or beginning and the end of pressing key control motor speed measurement; Measurement data and analysis result can display screen displays belonging to device, also can be transferred to remote computer by fieldbus.
As shown in Figure 3, when to measure the rotary speed data of multiple electric motors simultaneously, multiple measurement mechanism can be made to connect, set up test network.Managed and control operating state and the data summarization of each bus unit by remote computer.
Supply power mode of the present utility model adopts internal battery powers and fieldbus to power two kinds of modes, use during powered battery and can use as testing apparatus separately, use fieldbus when powering, can multiple device cascade, measure the operating state of multiple electric motors simultaneously.
The utility model adopts packaging shell that is rainproof, moistureproof, electromagnetism interference, circuit adopts encapsulation technology, reach IP67 protection level, adopt the data-interface with electromagnetic shielding capability, the electronic device of selection work wider range, adopt Shielded Twisted Pair or optical cable as wire transmission mode, adopt industrial WiFi as wireless transmission method, there is higher environmental suitability.
The utility model can measure motor speed result in real time, and carries out error analysis, can be used for the multiple occasion such as calibrating and operating state supervision of motor performance.
Claims (5)
1. a Fieldbus Based motor speed measurement device, it is characterized in that: comprise sensor interface, described sensor interface connects tachogenerator and microprocessor, microprocessor connects display screen, function button, bus interface and wireless lan interfaces, and bus interface is communicated with remote computer by fieldbus with wireless lan interfaces.
2. the Fieldbus Based motor speed measurement device of one according to claim 1, it is characterized in that: described tachogenerator is hall sensor, magnetoelectric sensor or electro-optical pickoff, stationary induction apparatus part on motor, sensor installation is popped one's head in.
3. the Fieldbus Based motor speed measurement device of one according to claim 1, is characterized in that: described microprocessor comprises central processing unit and data storage.
4. the Fieldbus Based motor speed measurement device of one according to claim 1, it is characterized in that: described bus interface comprises bus control unit, optical isolator and FPDP, the integrated field bus protocol of bus control unit and Ethernet protocol, FPDP is outside wire link interface.
5. the Fieldbus Based motor speed measurement device of one according to claim 1, is characterized in that: described wireless lan interfaces is connected with the bus control unit in bus interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420775431.0U CN204302720U (en) | 2014-12-10 | 2014-12-10 | A kind of Fieldbus Based motor speed measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420775431.0U CN204302720U (en) | 2014-12-10 | 2014-12-10 | A kind of Fieldbus Based motor speed measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204302720U true CN204302720U (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420775431.0U Expired - Fee Related CN204302720U (en) | 2014-12-10 | 2014-12-10 | A kind of Fieldbus Based motor speed measurement device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375735A (en) * | 2018-03-16 | 2018-08-07 | 重庆大学 | A kind of motor speed measuring device of memory-type |
-
2014
- 2014-12-10 CN CN201420775431.0U patent/CN204302720U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108375735A (en) * | 2018-03-16 | 2018-08-07 | 重庆大学 | A kind of motor speed measuring device of memory-type |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20151210 |
|
| EXPY | Termination of patent right or utility model |