CN201174055Y - Rotation speed measuring module - Google Patents
Rotation speed measuring module Download PDFInfo
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- CN201174055Y CN201174055Y CNU2008200569578U CN200820056957U CN201174055Y CN 201174055 Y CN201174055 Y CN 201174055Y CN U2008200569578 U CNU2008200569578 U CN U2008200569578U CN 200820056957 U CN200820056957 U CN 200820056957U CN 201174055 Y CN201174055 Y CN 201174055Y
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Abstract
The utility model relates to a rotating speed measuring module, which comprises a storage and parameter setting unit, a central processing unit, a logic unit, a first input conditioning unit, a second input conditioning unit, an output processing unit, a protective unit, an indicating unit and a power supply changeover device, wherein the central processing unit receives an open circuit test signal used to realize open circuit test and alarm of a rotating speed sensor, and also receives a logic signal so as to realize pulsed quantity measurement, overspeed protection function and operating state display through parameter setting. The rotating speed measuring module is used to realize the functions of measurement of rotating speed signal, open circuit test of the rotating speed sensor, input/output signal control of switching value and overspeed protection, and the like.
Description
Technical field
The utility model relates to steam turbine, relates in particular to a kind of tachometric survey module.
Background technology
Tachometric survey all is absolutely necessary in the every field of national economy, particularly to the measurement of steam turbine in thermal power plant rotating speed with control even more important.The measurement of turbine speed and control; the protection of steam turbine rotating speed; rapid reaction occupies greatly in the whole DCS of thermal power plant control system, yet existing speed measuring module generally all will test the speed and the overspeed protection functional separation, has that measuring accuracy is low, measuring speed slow and problem such as poor reliability.
The utility model content
In order to overcome above-mentioned the deficiencies in the prior art; the utility model aims to provide the tachometric survey module of the fast and good reliability of a kind of measuring accuracy height, measuring speed, with the open circuit of the measurement that realizes tach signal, speed probe detect, functions such as the input/output signal control of switching value, overspeed protection.
A kind of tachometric survey module described in the utility model comprises storage and parameter set unit, and it is characterized in that: it also comprises:
Central processing unit receives the open circuit detection signal on the one hand, is used to realize that the open circuit of speed probe detects and warning; The receive logic signal by the setting of parameter, is realized pulsed quantity measurement, overspeed protection function and is shown running status on the other hand;
Logical block is connected with described central processing unit, is used to receive tach signal on the one hand, be used for the actual speed signal is gathered, and to described central processing unit output logic signal; Be used for receiving key amount input signal on the other hand,, carry out the switching value control and treatment, and export corresponding switching value output signal according to the control signal of described central processing unit output;
The first input conditioning unit, be connected with described logical block and described central processing unit, the rotating speed input signal that is used for receiving from the external world carries out every straight, isolation, filtering and comparison shaping, and to described logical block output corresponding rotating speeds signal, simultaneously respectively to described logical block and described central processing unit output open circuit detection signal;
The second input conditioning unit is connected with described logical block, be used for the switching value input signal that receives from the external world isolate, filtering and shaping, and export corresponding switching value input signal to described logical block;
The output processing unit is connected with described logical block, is used for the switching value output signal that receives from described central processing unit is carried out opto-electronic conversion, and exports corresponding signal, exports control;
Protected location is connected with described output processing unit, when tach signal surpasses setting value, is used for protection switch amount output state;
Indicating member is connected with described logical block, is used to show the on-the-spot running status of described tachometric survey module;
Power supply change-over device is used for to described tachometric survey module for power supply.
In above-mentioned a kind of tachometric survey module, the described first input conditioning unit comprises input shaper submodule and the photoelectricity separaant module that is connected successively respectively with the second input conditioning unit.
In above-mentioned a kind of tachometric survey module, described output processing unit comprises signal Processing submodule and the photoelectricity MOS submodule that connects successively.
In above-mentioned a kind of tachometric survey module, described central processing unit also is connected with a communication interface, is used for and peripheral upper machine communication.
In above-mentioned a kind of tachometric survey module, described indicating member comprises data input state indication submodule, data output state indication submodule, speed control channel indication submodule, power supply/communication indication submodule.
Owing to adopted above-mentioned technical solution, the utility model is by the direct detection to the turbine speed sensor, be connected with system, tach signal is gathered, handled, go out actual speed by the mode computation that designs, and, finish control to turbine speed according to actual condition.In addition, the open circuit that the utility model also has speed probe detects, the input/output signal control of switching value, overspeed protection and state shows and functions such as warning, advantage such as have that measuring accuracy height, measuring speed are fast, good reliability, practical value are big.
Description of drawings
Fig. 1 is the structured flowchart of the most preferred embodiment of a kind of tachometric survey module of the utility model.
Embodiment
As shown in Figure 1; the most preferred embodiment of a kind of tachometric survey module of the utility model; comprise the first input conditioning unit 1, the second input conditioning unit 2, logical block 3, central processing unit 4, storage that is connected with central processing unit 4 and parameter set unit 5, export processing unit 6, protected location 7, indicating member 8 and to the power supply change-over device 9 of tachometric survey module for power supply, wherein:
The first input conditioning unit 1, be connected with logical block 3 and central processing unit 4, the rotating speed input signal that is used for receiving from the external world carries out every straight, isolation, filtering and comparison shaping, and to logical block 3 output corresponding rotating speeds signals, simultaneously respectively to logical block 3 and central processing unit 4 output open circuit detection signals;
The second input conditioning unit 2 is connected with logical block 3, be used for the switching value input signal that receives from the external world isolate, filtering and shaping, and export corresponding switching value input signal to logical block 3;
Indicating member 8 is connected with logical block 3, is used to show the on-the-spot running status of described tachometric survey module.
The first input conditioning unit 1 comprises input shaper submodule 11,21 and the photoelectricity separaant module 12,22 that is connected successively respectively with the second input conditioning unit 2.
Indicating member 8 comprises data input state indication submodule 81, data output state indication submodule 82, speed control channel indication submodule 83, power supply/communication indication submodule 84.
In the utility model, logical block 3 is used the input counting of extensive programmable logic chip CPLD as tach signal, with switching value signal input/output circuitry, extensive logic chip CPLD (XC9572TQ100) constitutes 16 bit timings/counter and trigger by programming, realizes 1. the actual speed signal being gathered; 2. the I/O of switching value is handled.
Storage comprise static memory SRAM (621024), flash memory FLASH (AM29F040) with parameter set unit 5 but, electronic type clear program ROM (read-only memory) EEPROM (X5043) and the house dog WCHdog (X5043) that is used to revise and be provided with on-site parameters.
In sum, the utility model is connected with system by the direct detection to the turbine speed sensor, tach signal is gathered, handled, go out actual speed by the mode computation that designs, and, finish control turbine speed according to actual condition.In addition, the open circuit that the utility model also has speed probe detects, the input/output signal control of switching value, overspeed protection and state shows and functions such as warning, advantage such as have that measuring accuracy height, measuring speed are fast, good reliability, practical value are big.
Below embodiment has been described in detail the utility model in conjunction with the accompanying drawings, and those skilled in the art can make the many variations example to the utility model according to the above description.Thereby some details among the embodiment should not constitute qualification of the present utility model, and the scope that the utility model will define with appended claims is as protection domain of the present utility model.
Claims (5)
1. a tachometric survey module comprises storage and parameter set unit, and it is characterized in that: it also comprises:
Central processing unit receives the open circuit detection signal on the one hand, is used to realize that the open circuit of speed probe detects and warning; The receive logic signal by the setting of parameter, is realized pulsed quantity measurement, overspeed protection function and is shown running status on the other hand;
Logical block is connected with described central processing unit, is used to receive tach signal on the one hand, be used for the actual speed signal is gathered, and to described central processing unit output logic signal; Be used for receiving key amount input signal on the other hand,, carry out the switching value control and treatment, and export corresponding switching value output signal according to the control signal of described central processing unit output;
The first input conditioning unit, be connected with described logical block and described central processing unit, the rotating speed input signal that is used for receiving from the external world carries out every straight, isolation, filtering and comparison shaping, and to described logical block output corresponding rotating speeds signal, simultaneously respectively to described logical block and described central processing unit output open circuit detection signal;
The second input conditioning unit is connected with described logical block, be used for the switching value input signal that receives from the external world isolate, filtering and shaping, and export corresponding switching value input signal to described logical block;
The output processing unit is connected with described logical block, is used for the switching value output signal that receives from described logical block is carried out opto-electronic conversion, and exports corresponding signal, exports control;
Protected location is connected with described output processing unit, is used for protection switch amount output state;
Indicating member is connected with described logical block, is used to show the on-the-spot running status of described tachometric survey module;
Power supply change-over device is used for to described tachometric survey module for power supply.
2. a kind of tachometric survey module according to claim 1 is characterized in that: the described first input conditioning unit comprises input shaper submodule and the photoelectricity separaant module that is connected successively respectively with the second input conditioning unit.
3. a kind of tachometric survey module according to claim 1 and 2 is characterized in that: described output processing unit comprises signal Processing submodule and the photoelectricity MOS submodule that connects successively.
4. a kind of tachometric survey module according to claim 1 and 2, it is characterized in that: described central processing unit also is connected with a communication interface, is used for and peripheral upper machine communication.
5. a kind of tachometric survey module according to claim 1 and 2 is characterized in that: described indicating member comprises data input state indication submodule, data output state indication submodule, speed control channel indication submodule, power supply/communication indication submodule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200569578U CN201174055Y (en) | 2008-04-03 | 2008-04-03 | Rotation speed measuring module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200569578U CN201174055Y (en) | 2008-04-03 | 2008-04-03 | Rotation speed measuring module |
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| CN201174055Y true CN201174055Y (en) | 2008-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200569578U Expired - Lifetime CN201174055Y (en) | 2008-04-03 | 2008-04-03 | Rotation speed measuring module |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360021A (en) * | 2011-08-01 | 2012-02-22 | 成都阜特科技有限公司 | Overspeed determining method applied to overspeed protection switch |
| CN104991082A (en) * | 2015-07-29 | 2015-10-21 | 湖南工业大学 | STC-based motor rotating speed measurer |
| CN105527896A (en) * | 2015-12-17 | 2016-04-27 | 滁州市博创电气有限公司 | Twelve-channel isolated type speed measurement board card |
| CN105974150A (en) * | 2016-06-21 | 2016-09-28 | 核工业理化工程研究院 | Portable multipath synchronous rotating speed tester |
| CN106018867A (en) * | 2015-03-27 | 2016-10-12 | 上海梅山钢铁股份有限公司 | Rotating speed probe switching and restoration device |
-
2008
- 2008-04-03 CN CNU2008200569578U patent/CN201174055Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360021A (en) * | 2011-08-01 | 2012-02-22 | 成都阜特科技有限公司 | Overspeed determining method applied to overspeed protection switch |
| CN102360021B (en) * | 2011-08-01 | 2013-04-03 | 成都阜特科技股份有限公司 | Overspeed determining method applied to overspeed protection switch |
| CN106018867A (en) * | 2015-03-27 | 2016-10-12 | 上海梅山钢铁股份有限公司 | Rotating speed probe switching and restoration device |
| CN106018867B (en) * | 2015-03-27 | 2019-03-26 | 上海梅山钢铁股份有限公司 | Rotational speed probe switching and prosthetic device |
| CN104991082A (en) * | 2015-07-29 | 2015-10-21 | 湖南工业大学 | STC-based motor rotating speed measurer |
| CN105527896A (en) * | 2015-12-17 | 2016-04-27 | 滁州市博创电气有限公司 | Twelve-channel isolated type speed measurement board card |
| CN105974150A (en) * | 2016-06-21 | 2016-09-28 | 核工业理化工程研究院 | Portable multipath synchronous rotating speed tester |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081231 |