CN204576148U - A kind of microcomputer rotation speed signal device for genset - Google Patents
A kind of microcomputer rotation speed signal device for genset Download PDFInfo
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- CN204576148U CN204576148U CN201520249804.5U CN201520249804U CN204576148U CN 204576148 U CN204576148 U CN 204576148U CN 201520249804 U CN201520249804 U CN 201520249804U CN 204576148 U CN204576148 U CN 204576148U
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Abstract
The utility model relates to a kind of microcomputer rotation speed signal device for genset, comprise housing and the built-in circuit board of housing, circuit board is respectively arranged with collection terminal, processor, signal output part and key entry module, collection terminal comprises three tunnel signal source harvesters, adopt gear panel measurement device respectively, voltage transformer (VT), current transformer is as input pattern signal, gear panel measurement device, voltage transformer (VT), the signal output part of current transformer carries out after digital-to-analogue conversion through digital to analog converter respectively, signal isolation and coupling is carried out again through photoisolator, then be connected with the input end of processor, this processor is single-chip microcomputer, its output terminal is connected with signal output part, the connection of this signal output part is respectively arranged with four output ports.The utility model can realize unit numerical control, and also can network with computer interface realizes team control.
Description
Technical field
The utility model belongs to generator measuring and controlling equipment field, especially a kind of microcomputer rotation speed signal device for genset.
Background technology
Rotating speed is very important detection data during genset runs, and the excitation of unit is built pressure, rotating speed restriction, overspeed protection and dropped into the enabling signal controlled of braking and provides by Rotation rate signal device.Traditional Rotation rate signal device is made up of one group of voltage relay, reflects the rotating speed of unit with the voltage of machine end PT or permanent magnetic motor.This telltale not only function singleness, measuring accuracy is low, difficulty of adjusting (definite value accurately adjust to only have carry out at the scene), and working value scope is little, easily drifts about, and reliability is low, governs the raising of unit allocation automatization level; Especially in today that infotech is growing, classical signal device is difficult to access Control of Power Plant LAN (LAN).
Summary of the invention
The purpose of this utility model is to overcome prior art deficiency, provides a kind of and is easy to statistical conversion and the higher microcomputer rotation speed signal device for genset of applicability.
The technical solution adopted in the utility model is:
A kind of microcomputer rotation speed signal device for genset, comprise housing and the built-in circuit board of housing, circuit board is respectively arranged with collection terminal, processor, signal output part and key entry module, collection terminal comprises three tunnel signal source harvesters, adopt gear panel measurement device respectively, voltage transformer (VT), current transformer is as input pattern signal, gear panel measurement device, voltage transformer (VT), the signal output part of current transformer carries out after digital-to-analogue conversion through digital to analog converter respectively, signal isolation and coupling is carried out again through photoisolator, then be connected with the input end of processor, this processor is single-chip microcomputer, its output terminal is connected with signal output part, the connection of this signal output part is respectively arranged with four output ports, wherein first output port is provided with 0-20mA analogue quantity output circuit, for providing simulation unit tach signal for other equipment, second output port adopts ethernet communication interface, usually adopts RS485 communication interface, adopts Modbus communications protocol, for accessing the net control of power house, 3rd output port is light disconnector amount input relay output interface, for driving alternating current-direct current load, 4th output port is digital pipe display circuit, for connecting digitron display screen.
And the output terminal of described key entry module connects single-chip microcomputer, and the input end keying in module connects keyboard by keyboard interface.
And input end, first output port of described key entry module are provided with corresponding connecting interface to the 3rd output port, the housing of microcomputer rotation speed signal device can install digitron display screen, be connected with digital pipe display circuit.
And be parallel with LED light in the connecting circuit of described single-chip microcomputer output terminal and light disconnector amount input relay output interface, this pilot lamp is arranged on the housing of microcomputer rotation speed signal device.
And, the signal source stand-by heat each other of described gear panel measurement device input, voltage transformer (VT) input, current transformer input.
The utility model advantage and good effect are:
1, the key control unit of microcomputer rotation speed signal device that the utility model provides adopts Imported High-performance digital signal controller (DSC), this controller is integrated with the controlling functions of single-chip microcomputer (MCU) and the computing power of digital signal processor (DSP), is widely used in various industrial control system.
2, the signal source of microcomputer rotation speed signal device that the utility model provides can take from PT, CT or fluted disc, frequency measurement wide ranges, and frequency measurement is not substantially by the impact of voltage magnitude, and three tunnel signal sources stand-by heat each other, improves reliability and the dirigibility of device greatly.
3, the microcomputer rotation speed signal device that the utility model provides adopts counter array (PCA) frequency measurement of body high-speed programmable, and digital phase-locked loop adds software digital filter technology, and frequency measurement is accurate, and real-time is good.
4, the microcomputer rotation speed signal device that the utility model provides has the function remembering current unit frequency maxima, is convenient to load rejection test and accident is overrun analysiss, and record trouble during contact non-correct operation, is convenient to maintenance and detection.
5, the microcomputer rotation speed signal device that provides of the utility model is with RS485 communication interface, adopts Modbus communications protocol, convenient access Control of Power Plant network.
6, the microcomputer rotation speed signal device that the utility model provides provides the most widely used 0-20mA analog output in electric field, provides simulation unit tach signal can to other equipment of power station.
7, the microcomputer rotation speed signal device that the utility model provides has that measuring accuracy is high, good stability, reliability are high, function is strong, it is flexible, simple to operate to adjust, install the advantages such as easy.Can realize unit numerical control, also can network with computer interface realizes team control.Can improve power generating quality, economize on resources, be the high-tech product of rotary speed of generator group observing and controlling, is applicable to the observing and controlling of modern industry various running mechanical separator speed.
Accompanying drawing illustrates:
Fig. 1 is circuit connection structure block diagram of the present utility model.
Embodiment:
Below by accompanying drawing, the utility model is described in further detail in conjunction with specific embodiments, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.
A kind of microcomputer rotation speed signal device for genset, comprise housing and the built-in circuit board of housing, circuit board is respectively arranged with collection terminal, processor, signal output part and key entry module, collection terminal comprises three tunnel signal source harvesters, adopt gear panel measurement device respectively, voltage transformer (VT) (PT), current transformer (CT) is as input pattern signal, the signal source stand-by heat each other of three tunnel inputs, gear panel measurement device, voltage transformer (VT), the signal output part of current transformer is respectively after digital to analog converter (shaping) carries out digital-to-analogue conversion, signal isolation and coupling is carried out again through photoisolator, then be connected with the input end of processor, this processor is single-chip microcomputer, this single-chip microcomputer adopts high performance digital signal controller (DSC), this controller is integrated with controlling functions and the digital signal processor (DSP) of single-chip microcomputer (MCU), its output terminal is connected with signal output part, the connection of this signal output part is respectively arranged with four output ports, wherein first output port is provided with 0-20mA analogue quantity output circuit, for providing simulation unit tach signal for other equipment, second output port adopts ethernet communication interface, usually adopts RS485 communication interface, adopts Modbus communications protocol, for accessing the net control of power house, 3rd output port is light disconnector amount input relay output interface, for driving alternating current-direct current load, 4th output port is digital pipe display circuit, for connecting digitron display screen.
The output terminal keying in module connects single-chip microcomputer, and the input end keying in module connects keyboard by keyboard interface.
Input end, first output port of keying in module are provided with corresponding connecting interface to the 3rd output port, the housing of microcomputer rotation speed signal device can install digitron display screen, be connected with digital pipe display circuit, be convenient to direct reading.
The connecting circuit of single-chip microcomputer output terminal and light disconnector amount input relay output interface is parallel with LED light, and this pilot lamp is arranged on the housing of microcomputer rotation speed signal device.
Although disclose embodiment of the present utility model and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the utility model and claims, various replacement, change and amendment are all possible, therefore, scope of the present utility model is not limited to the content disclosed in embodiment and accompanying drawing.
Claims (5)
1. the microcomputer rotation speed signal device for genset, comprise housing and the built-in circuit board of housing, circuit board is respectively arranged with collection terminal, processor, signal output part and key entry module, collection terminal comprises three tunnel signal source harvesters, adopt gear panel measurement device respectively, voltage transformer (VT), current transformer is as input pattern signal, gear panel measurement device, voltage transformer (VT), the signal output part of current transformer carries out after digital-to-analogue conversion through digital to analog converter respectively, signal isolation and coupling is carried out again through photoisolator, then be connected with the input end of processor, this processor is single-chip microcomputer, its output terminal is connected with signal output part, the connection of this signal output part is respectively arranged with four output ports, wherein first output port is provided with 0-20mA analogue quantity output circuit, for providing simulation unit tach signal for other equipment, second output port adopts ethernet communication interface, usually adopts RS485 communication interface, adopts Modbus communications protocol, for accessing the net control of power house, 3rd output port is light disconnector amount input relay output interface, for driving alternating current-direct current load, 4th output port is digital pipe display circuit, for connecting digitron display screen.
2. the microcomputer rotation speed signal device for genset according to claim 1, is characterized in that: the output terminal of described key entry module connects single-chip microcomputer, and the input end keying in module connects keyboard by keyboard interface.
3. the microcomputer rotation speed signal device for genset according to claim 2, it is characterized in that: input end, first output port of described key entry module are provided with corresponding connecting interface to the 3rd output port, the housing of microcomputer rotation speed signal device can install digitron display screen, be connected with digital pipe display circuit.
4. the microcomputer rotation speed signal device for genset according to claim 1, it is characterized in that: in the connecting circuit of described single-chip microcomputer output terminal and light disconnector amount input relay output interface, be parallel with LED light, this pilot lamp is arranged on the housing of microcomputer rotation speed signal device.
5. the microcomputer rotation speed signal device for genset according to claim 1, is characterized in that: the signal source stand-by heat each other of described gear panel measurement device input, voltage transformer (VT) input, current transformer input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520249804.5U CN204576148U (en) | 2015-04-23 | 2015-04-23 | A kind of microcomputer rotation speed signal device for genset |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520249804.5U CN204576148U (en) | 2015-04-23 | 2015-04-23 | A kind of microcomputer rotation speed signal device for genset |
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| CN204576148U true CN204576148U (en) | 2015-08-19 |
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| CN201520249804.5U Expired - Fee Related CN204576148U (en) | 2015-04-23 | 2015-04-23 | A kind of microcomputer rotation speed signal device for genset |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204389A (en) * | 2015-10-08 | 2015-12-30 | 武汉聚鑫源机电工程设备有限公司 | Programmable rotating speed signal device based on software and hardware dual TMR type |
| CN106647491A (en) * | 2016-12-19 | 2017-05-10 | 天津市品通电力科技有限公司 | Prime mover speed regulation device motherboard based on digital signal processor |
-
2015
- 2015-04-23 CN CN201520249804.5U patent/CN204576148U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105204389A (en) * | 2015-10-08 | 2015-12-30 | 武汉聚鑫源机电工程设备有限公司 | Programmable rotating speed signal device based on software and hardware dual TMR type |
| CN106647491A (en) * | 2016-12-19 | 2017-05-10 | 天津市品通电力科技有限公司 | Prime mover speed regulation device motherboard based on digital signal processor |
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| 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: 20150819 Termination date: 20210423 |
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| CF01 | Termination of patent right due to non-payment of annual fee |