CN2682419Y - Electrical rotational speed signal device - Google Patents
Electrical rotational speed signal device Download PDFInfo
- Publication number
- CN2682419Y CN2682419Y CN 03232761 CN03232761U CN2682419Y CN 2682419 Y CN2682419 Y CN 2682419Y CN 03232761 CN03232761 CN 03232761 CN 03232761 U CN03232761 U CN 03232761U CN 2682419 Y CN2682419 Y CN 2682419Y
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Abstract
The utility model discloses an electrical rotational speed signal device to overcome the defect of the rotational speed monitoring device of the existing hydroelectric generating group; the electrical rotational speed signal device has the advantages of multi signals output, perfect functions, strong reliability, and good anti-interference performance; a high performance programmable controller is adopted as the core of the utility model, and a double signals source (generator end PT signals and fluted disc pulsed signals) parallel input are mutually adopted as primary standby mode to improve the reliability of the rotational speed monitoring. When the signal of one of the two signal sources is interrupted, the signal output of the connecting point can not be influenced, and simultaneously, a signal source trouble alarm signal can be sent out. The device can output various signals for users such as the rotational speed connecting point signal, the creeping alarm contact point signal, the fluted disc pulse output signal, the analog quantity outputting signal, the signal source monitor signal, etc.
Description
Technical field
The utility model relates to a kind of rotating speed signal device, a kind of specifically rotation speed monitor that is used for the hydraulic generator unit.
Background technology
The rotation speed monitor that is used for the hydraulic generator unit at present mainly contains the relay system rotating speed signal device and realizes the equipment of signal monitoring with microprocessor, they exist all that the logarithmic output signal amount is few, the defective of function singleness, poor reliability, and the problem of the interference free performance difference that microprocessor formula monitoring equipment exists is particularly outstanding.Their these defectives are generally acknowledged by industry.
Summary of the invention
The utility model is intended to overcome the defective that existing hydraulic generator unit rotation speed monitor exists, and provides that a kind of logarithmic output signal amount is many, the electrical rotate-speed telltale of complete function, good reliability, good in anti-interference performance.
For solving the problems of the technologies described above, the technical scheme that the utility model adopted is as follows:
A kind of electrical rotate-speed telltale is characterized in that: it comprises programmable controller, frequency measurement module, relay interface circuit board, by the programmable controller programming generating unit speed is monitored.
The utility model frequency measurement module is measured PT channel frequence signal and fluted disc channel frequence signal, and sends measurement result to programmable controller by serial port, and the programmable controller counting module is to the step-by-step counting of fluted disc signal source.
The utility model also comprises the electrode open circuit output module that sends various switching value signals, is provided with pilot lamp on this module.
Described pilot lamp divides two grades of A, B, the corresponding 1# of these 8 lamps～8# output contact when selecting the A shelves, and the corresponding 9# of these 8 lamps～16# output contact when selecting the B shelves, corresponding pilot lamp is bright when output contact moves.
The utility model also comprises the analog output module of output two-way current signal.
The utility model also comprises the control that realizes whole PLC and the CPU module of management function, and user program is solidificated in the CPU module.
On the described CPU module pilot lamp is arranged.
The utility model relay interface circuit board is realized the conversion of signal, relay is housed on interface card, the transistor output signal of programmable controller is converted to the relay tip signal, be contained on the interface card for the electric terminal of terminal block is also concentrated, machine end PT input signal connection terminal is on the frequency measurement module.
The utility model also comprises the display setting unit, and the master in the two-way signal source is set by the user with signal and space signal, and all parameter settings are all finished by the display setting unit.
The beneficial effects of the utility model and characteristics show:
One, adopt Programmable Logic Controller to realize hydraulic generator unit rotation speed monitoring;
Two, speed switch amount number of contacts of this device output is greater than 10, and exports 2 tunnel 4～20mA analog signalses;
Three, this device carries liquid crystal display operation screen, and parameter setting is finished by this screen, and can demonstrate contact action situation and generating unit speed value, frequency values, can write down generating unit speed rising value and unit startup-shutdown number of times automatically, and the operation display interface be Chinese;
Four, this device adopts fluted disc signal and the parallel input of PT signal dual signal source;
Five, this device is realized high precision (0.005 grade) frequency measurement;
The utility model is a core with the high performance programmable sequence controller, adopts the parallel main-standby mode each other of importing of dual signal source (machine end PT signal and fluted disc pulse signal), to improve the reliability of rotation speed monitoring.Any one tunnel signal interruption can the docking point output signal not exert an influence in the two paths of signals source, sends the signal source failure alarm signal simultaneously.This installs exportable polytype signal and uses for the user, as rotating speed contact point signal, the warning contact point signal of creeping, fluted disc pulse output signals, analog quantity output signals, signal source supervisory signal etc.
Description of drawings
Fig. 1 is the utility model architecture logic block diagram
Fig. 2 is the utility model circuit theory diagrams
Embodiment
The utility model is made up of 1 cover SZ-4 type programmable controller (PLC), 1 frequency measurement module, 1 relay interface circuit board and display setting unit, and whole circuit are installed concentratedly in a casing.By the monitoring of PLC programming realization to generating unit speed.The frequency measurement module realizes the high-acruracy survey to PT channel frequence signal and fluted disc channel frequence signal, and sends measurement result to PLC by serial port, and the PLC high speed counting module is realized the step-by-step counting to the fluted disc signal source.16 collector open circuit output modules send various switching value signals, 8 pilot lamp are arranged on this module, divide two grades of A, B, the corresponding 1# of these 8 lamps～8# output contact when selecting the A shelves, the corresponding 9# of these 8 lamps～16# output contact when selecting the B shelves, corresponding pilot lamp is bright when output contact moves.Analog output module output two-way 4～20mA current signal.The CPU module realizes control and the management function of whole PLC, and user program is solidificated in the CPU module.Four pilot lamp are arranged on the CPU module, the PWR lamp was bright after device powered on, the RUN lamp was bright when device was in running status, the BATT lamp is bright when cell voltage is on the low side in the module (needs to change battery this moment, for the purpose of safe, please check after the replacing whether each setting value changes), CPU lamp bright (this moment, device was out of service, and all output contacts are in off-state) when the CPU program run is broken down.
The relay interface circuit board is realized the conversion of signal, and 16 PCB relays are housed on interface card, and the transistor output signal of PLC is converted to the relay tip signal.Be contained on the interface card for the electric terminal of terminal block is also concentrated, machine end PT input signal connection terminal is on the frequency measurement module.
Master in the two-way signal source is set by the user with signal and space signal, for example, is that the master uses signal if set the fluted disc signal, and then machine end PT signal becomes space signal automatically, and vice versa.All parameter settings are all finished by the display setting unit.
The utility model is provided with 4 Φ 12 mounting holes on the backboard of device box, mounting hole centre distance is 280mm (wide) * 310mm (height).
Normal environment for use condition:
1, environment temperature :+5 ℃～+ 40 ℃
2, relative air humidity:＜85% (in the time of 20 ℃)
3, sea level elevation is no more than 3000m
4, surrounding environment non-corrosiveness gas
The basic fundamental parameter
1, device power supply: both can meet 220VAC, and also can meet 220VDC.(common electrical rotate-speed telltale can only connect a kind of power supply)
2, tach signal source: two arm configuration, the one tunnel is that (0.2V～220V), another road is fluted disc pulse signal (square wave, amplitude 24V) to machine end PT signal, and the two paths of signals source can be imported simultaneously, but also single channel is imported.(common electrical rotate-speed telltale adopts single channel tach signal source)
3, rotating speed output contact: the output of No. 13 relay SPST normal opened contacts, every road contact rating is resistive load 1250VA/150W, inductive load 500VA/60W.Every road output signal can independently be adjusted, and the project of adjusting comprises that enabling selection (enable/disable), manner of execution selection (action of raising speed action/reduction of speed) and working value sets.(common electrical rotate-speed telltale rotating speed output contact number is less than 10 the tunnel)
4, the unit warning contact of creeping: the output of No. 1 relay SPST normal opened contact, contact rating is with 3.3, and contact is adjusted and comprised and enable to select (enable/disable) and the range limit value of creeping (be not more than 5%Nr, Nr is the unit rated speed) setting.(common electrical rotate-speed telltale can not be realized the warning function of creeping)
5, tach signal source fault alarm output contact: the output of No. 2 relay SPST normal opened contacts, every road contact rating is with item 3.3.One tunnel corresponding machine end PT signal source wherein, the corresponding fluted disc pulse signal source in another road.(common electrical rotate-speed telltale is not with tach signal source fault alarm output contact)
6, rotating speed analog quantity output: 2 tunnel altogether cloudy type 4～20mA electric current outputs, all linear corresponding 0～200%Nr in every road, pull-up resistor is not more than 600 Ω.(common electrical rotate-speed telltale at most only is with the output of one road rotating speed analog quantity)
7, pulsed quantity signal output: 1 road fluted disc pulse signal output (square wave), output form is the open collector type, the voltage range that allows the user to apply is 5VDC～30VDC, the signals of rotational speed sensor source frequency unanimity of the pulsed frequency correspondence of output.(the not dai channel momentum signal output of common electrical rotate-speed telltale)
8, high precision frequency measurement
The electrical rotate-speed telltale can be realized the high-acruracy survey of machine class frequency, and precision can reach 0.05%, is better than 1% index of national Specification.
9, display setting:
9.1, the electrical rotate-speed telltale has the display setting device, adopts Chinese interface, intuitive display, easy to operate.(common electrical rotate-speed telltale is with the display setting device that adopts Chinese interface, and what have does not have a Presentation Function at all, and the charactron that only has only that has shows or pilot lamp that information capacity is little, show not directly perceived, inconvenient operation)
9.2, electrical rotate-speed telltale displaying contents comprises: generating unit speed (RPM), machine class frequency (Hz), unit maximum frequency rising value, unit overrun time of origin (day Hour Minute Second), unit startup-shutdown number of times, the action of rotating speed output contact, unit creep warning message, the PT signal source interrupts warning message and the fluted disc signal source is interrupted warning message.(the electrical rotate-speed telltale of common band Presentation Function only can the display machines class frequency and the action of rotating speed output contact)
9.3, electrical rotate-speed telltale setting content comprises: the rotating speed contact enables to set (enable/disable), rotating speed contact manner of execution is set (action of raising speed action/reduction of speed), rotating speed contact working value is set (setting range 0～200%Nr, adopt percent value, Nr is the unit rated speed), unit is creeped to report to the police and is enabled to set (enable/disable), the higher limit of creeping sets (0～5%Nr), the input of the speed measuring fluted disc number of teeth, unit rated speed input (RPM), the input of power generator electrode logarithm, the input of machine set fluted disc rated frequency, fluted disc signal source/PT signal source is active and standby with setting.(common electrical rotate-speed telltale does not possess the rotating speed contact and enables setting, rotating speed contact manner of execution set-up function and the set-up function of creeping)
The utility model is used for the rotation speed monitoring of hydraulic generator unit, is core with the high performance programmable sequence controller, adopts the parallel main-standby mode each other of importing of dual signal source (machine end PT signal and fluted disc pulse signal), to improve the reliability of rotation speed monitoring.Any one tunnel signal interruption can the docking point output signal not exert an influence in the two paths of signals source, sends the signal source failure alarm signal simultaneously.This installs exportable polytype signal and uses for the user, as rotating speed contact point signal, the warning contact point signal of creeping, fluted disc pulse output signals, analog quantity output signals, signal source supervisory signal etc.The utility model can adopt wall-hanging mounting means, also can adopt with the mechanical separator speed telltale and be assembled into the one mounting means.
Claims (9)
1, a kind of electrical rotate-speed telltale is characterized in that: it comprises programmable controller, frequency measurement module, relay interface circuit board, by the programmable controller programming generating unit speed is monitored.
2, electrical rotate-speed telltale according to claim 1, it is characterized in that: the frequency measurement module is measured PT channel frequence signal and fluted disc channel frequence signal, and sending measurement result to programmable controller by serial port, the programmable controller counting module is to the step-by-step counting of fluted disc signal source.
3, electrical rotate-speed telltale according to claim 1 and 2 is characterized in that: also comprise the electrode open circuit output module that sends various switching value signals, be provided with pilot lamp on this module.
4, electrical rotate-speed telltale according to claim 3, it is characterized in that: described pilot lamp divides two grades of A, B, the corresponding 1# of these 8 lamps～8# output contact when selecting the A shelves, the corresponding 9# of these 8 lamps～16# output contact when selecting the B shelves, corresponding pilot lamp is bright when output contact moves.
5, electrical rotate-speed telltale according to claim 4 is characterized in that: the analog output module that also comprises output two-way current signal.
6, electrical rotate-speed telltale according to claim 5 is characterized in that: also comprise the control that realizes whole PLC and the CPU module of management function, user program is solidificated in the CPU module.
7, electrical rotate-speed telltale according to claim 6 is characterized in that: on the described CPU module pilot lamp is arranged.
8, electrical rotate-speed telltale according to claim 7, it is characterized in that: the relay interface circuit board is realized the conversion of signal, relay is housed on interface card, the transistor output signal of programmable controller is converted to the relay tip signal, be contained on the interface card for the electric terminal of terminal block is also concentrated, machine end PT input signal connection terminal is on the frequency measurement module.
9, electrical rotate-speed telltale according to claim 8 is characterized in that: also comprise the display setting unit, the master in the two-way signal source is set by the user with signal and space signal, and all parameter settings are all finished by the display setting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03232761 CN2682419Y (en) | 2003-01-10 | 2003-01-10 | Electrical rotational speed signal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03232761 CN2682419Y (en) | 2003-01-10 | 2003-01-10 | Electrical rotational speed signal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2682419Y true CN2682419Y (en) | 2005-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03232761 Expired - Lifetime CN2682419Y (en) | 2003-01-10 | 2003-01-10 | Electrical rotational speed signal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2682419Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100422891C (en) * | 2006-09-25 | 2008-10-01 | 四川东风电机厂有限公司 | Programmable temperature and speed measuring control system |
| CN104405574A (en) * | 2014-11-25 | 2015-03-11 | 无锡科思电子科技有限公司 | Water wheel rotating speed monitoring system based on output pulse frequency |
| CN104670510A (en) * | 2013-12-02 | 2015-06-03 | 景德镇昌航航空高新技术有限责任公司 | Helicopter rotor rotating speed alarm device |
| 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 |
| CN110221091A (en) * | 2019-06-10 | 2019-09-10 | 合肥工业大学 | A kind of weak signal extraction for surveying Rotational Speed of Asynchronous Motor based on actinobolia |
-
2003
- 2003-01-10 CN CN 03232761 patent/CN2682419Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100422891C (en) * | 2006-09-25 | 2008-10-01 | 四川东风电机厂有限公司 | Programmable temperature and speed measuring control system |
| CN104670510A (en) * | 2013-12-02 | 2015-06-03 | 景德镇昌航航空高新技术有限责任公司 | Helicopter rotor rotating speed alarm device |
| CN104670510B (en) * | 2013-12-02 | 2017-07-28 | 景德镇昌航航空高新技术有限责任公司 | A kind of lifting airscrew rotating speed alarm device |
| CN104405574A (en) * | 2014-11-25 | 2015-03-11 | 无锡科思电子科技有限公司 | Water wheel rotating speed monitoring system based on output pulse frequency |
| 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 |
| CN110221091A (en) * | 2019-06-10 | 2019-09-10 | 合肥工业大学 | A kind of weak signal extraction for surveying Rotational Speed of Asynchronous Motor based on actinobolia |
| CN110221091B (en) * | 2019-06-10 | 2021-05-28 | 合肥工业大学 | Weak signal extraction method for measuring rotating speed of asynchronous motor based on induction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130110 Granted publication date: 20050302 |