CN202533446U

CN202533446U - Rotating speed signal device

Info

Publication number: CN202533446U
Application number: CN2012201941672U
Authority: CN
Inventors: 衡叶; 曾健; 谭招凤
Original assignee: CHONGQING SHENGXU SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: CHONGQING SHENGXU SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2012-05-03
Filing date: 2012-05-03
Publication date: 2012-11-14
Anticipated expiration: 2022-05-03

Abstract

The utility model discloses a rotating speed signal device, which relates to a signal monitoring device. The rotating speed signal device comprises a power source module and a signal acquisition device; an output end of the signal acquisition device is connected to a first input end of a single chip microcontroller; a first output end of the single chip microcontroller is connected with a display module; a second output end of the single chip microcomputer is connected to an input end of the of a first relay; a third output end of the single chip microcomputer is connected with an input end of a second relay; and an output end of the power source module is connected to a second input end of the single chip microcomputer. The rotating speed signal device also comprises a calendar clock module of which an output end is connected with a third input end of the single chip microcomputer. An amplifying and shaping circuit is arranged between the signal acquisition device and the single chip microcomputer. The signal acquisition device sends data to the single chip microcontroller through the amplifying and shaping circuit. The rotating speed signal device of the utility model is advantageous in high-accuracy acquisition, high-precision measurement, improved data storage security, convenient input setting, stronger capability of prompting a rotating speed and enhanced monitoring performance.

Description

The tach signal appearance

Technical field

The utility model relates to a kind of signal monitoring device, particularly relates to a kind of tach signal appearance.

Background technology

The tach signal appearance is widely used in hydraulic generator unit tach signal monitoring field; Existing tach signal appearance function singleness directly outputs signal to single-chip microcomputer by signal pickup assembly, and single-chip microcomputer uploads to host computer again; The poor signal quality that collects from signal pickup assembly; Reliability, accuracy are not high, and quality is unstable, can not adapt to the requirement of automatic control fully.

Therefore those skilled in the art are devoted to develop a kind of tach signal appearance accurate, that measuring accuracy is high of gathering.

The utility model content

Because the above-mentioned defective of prior art, the utility model technical matters to be solved provides a kind of the collection and shows the tach signal appearance accurate, that measuring accuracy is high.

For realizing above-mentioned purpose, the utility model provides a kind of tach signal appearance, comprises power module and signal pickup assembly; The output terminal of said signal pickup assembly connects the first input end of single-chip microcomputer; First output terminal of said single-chip microcomputer connects display module; Second output terminal of said single-chip microcomputer connects the input end of first relay; The 3rd output terminal of said single-chip microcomputer connects the input end of second relay; The output terminal of said power module connects second input end of said single-chip microcomputer; Also include the calendar clock module; The output terminal of said calendar clock module connects the 3rd input end of said single-chip microcomputer; Be provided with amplification and rectification circuit between said signal pickup assembly and the said single-chip microcomputer, said signal pickup assembly sends data through said amplification and rectification circuit to said single-chip microcomputer.

Preferable, it is the single-chip microcomputer of STC89C52RC that said single-chip microcomputer adopts model.Be built-in with eeprom memory (Electrically Erasable Programmable Read-Only Memory, EEPROM) at said single-chip microcomputer,, improved the security that data are preserved owing to increased eeprom memory.

Preferable, said calendar clock module adopts PCF8563 type clock/calendar chip.

Said single-chip microcomputer communicates through RS485 bus and host computer, and said single-chip microcomputer also is connected with input media; The output terminal of said input media connects the four-input terminal of single-chip microcomputer, and said input media is a button, can set the rotating speed alarming value of qualification through the RS-485 bus through host computer, also can manually set the rotating speed alarming value of qualification through input media.

Said single-chip microcomputer also is connected with pilot lamp; The 4th output terminal of said single-chip microcomputer connects the input end of said pilot lamp, pilot lamp has been installed can have been played prompt facility, can better point out rotating speed, has improved the monitoring performance.

The beneficial effect of the utility model is: the utility model collection is accurate, measuring accuracy is high, has improved the security that data are preserved, and it is convenient to set input, can better point out rotating speed, has improved the monitoring performance.

Description of drawings

Fig. 1 is the structural representation of the utility model one embodiment.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further:

As shown in Figure 1, a kind of tach signal appearance comprises power module 1 and signal pickup assembly 2; Said power module 1 adopts ac-dc dual power supply, and said signal pickup assembly 2 adopts voltage transformer (VT), and the output terminal of said signal pickup assembly 2 connects the first input end of single-chip microcomputer 3; It is the single-chip microcomputer of STC89C52RC that said single-chip microcomputer 3 adopts model; First output terminal of said single-chip microcomputer 3 connects display module 4, and said display module 4 adopts 4 LED displays, and second output terminal of said single-chip microcomputer 3 connects the input end of first relay 5; The 3rd output terminal of said single-chip microcomputer 3 connects the input end of second relay 6; The output terminal of said power module 1 connects second input end of said single-chip microcomputer 3, and its key is: also include calendar clock module 7, said calendar clock module 7 adopts PCF8563 type clock/calendar chip; The output terminal of said calendar clock module 7 connects the 3rd input end of said single-chip microcomputer 3; Be provided with amplification and rectification circuit 8 between said signal pickup assembly 2 and the said single-chip microcomputer 3, said signal pickup assembly 2 sends data through said amplification and rectification circuit 8 to said single-chip microcomputer 3, and said single-chip microcomputer 3 is built-in with eeprom memory.

Single-chip microcomputer 3 communicates through RS485 bus and host computer 9.

Single-chip microcomputer 3 also is connected with input media 10, and the output terminal of said input media 10 connects the four-input terminal of single-chip microcomputer 3, and said input media 10 is a button, can set the rotating speed limit value through input media.

Single-chip microcomputer 3 also is connected with pilot lamp 11, and the 4th output terminal of said single-chip microcomputer 3 connects the input end of said pilot lamp 11.

Signal pickup assembly 2 is gathered residual voltage frequency measurement signal, and residual voltage frequency measurement signal imports single-chip microcomputer 3 into after amplifying shaping through amplification and rectification circuit 8; The residual voltage frequency measurement signal that 3 pairs of single-chip microcomputers receive carries out digital processing, converts thereof into tachometer value; Present embodiment is provided with six first relays; The rotating speed limit value of setting is 5%, 15%, 35%, 95%, 115%, 140% of 50HZ; When the tachometer value that collects exceeds the rotating speed limit value of setting; Single-chip microcomputer 3 sends high level signal and sends data to host computer 9 through the RS485 bus for display module 4, single-chip microcomputer 3 for pilot lamp 11, single-chip microcomputer 3 transmission signals to 5 actions of first relay, 5 controls, first relay, single-chip microcomputer 3 transmission signals, and single-chip microcomputer 3 arrives eeprom memory with data storage simultaneously; Single-chip microcomputer 3 also can be from eeprom memory reading of data; When single-chip microcomputer 3 detected power supply, clock or single-chip microcomputer and itself breaks down, single-chip microcomputer 3 stopped to send signal and gives second relay, 6 controls, second relay 6 actions.

More than describe the preferred embodiment of the utility model in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can make many modifications and variation according to the design of the utility model.Therefore, all technician in the art according to the design of the utility model on the basis of existing technology through the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in determined protection domain by claims.

Claims

1. a tach signal appearance comprises power module (1) and signal pickup assembly (2); The output terminal of said signal pickup assembly (2) connects the first input end of single-chip microcomputer (3); First output terminal of said single-chip microcomputer (3) connects display module (4); Second output terminal of said single-chip microcomputer (3) connects the input end of first relay (5); The 3rd output terminal of said single-chip microcomputer (3) connects the input end of second relay (6); The output terminal of said power module (1) connects second input end of said single-chip microcomputer (3); It is characterized in that: also include calendar clock module (7); The output terminal of said calendar clock module (7) connects the 3rd input end of said single-chip microcomputer (3); Be provided with amplification and rectification circuit (8) between said signal pickup assembly (2) and the said single-chip microcomputer (3), said signal pickup assembly (2) sends data through said amplification and rectification circuit (8) to said single-chip microcomputer (3).

2. tach signal appearance as claimed in claim 1 is characterized in that: said single-chip microcomputer (3) is built-in with eeprom memory.

3. according to claim 1 or claim 2 tach signal appearance, it is characterized in that: it is the single-chip microcomputer of STC89C52RC that said single-chip microcomputer (3) adopts model.

4. tach signal appearance as claimed in claim 3 is characterized in that: said single-chip microcomputer (3) communicates through RS485 bus and host computer (9).

5. tach signal appearance as claimed in claim 1 is characterized in that: said calendar clock module (7) adopts PCF8563 type clock/calendar chip.

6. tach signal appearance as claimed in claim 4 is characterized in that: said single-chip microcomputer (3) also is connected with input media (10); The output terminal of said input media (10) connects the four-input terminal of single-chip microcomputer (3).

7. tach signal appearance as claimed in claim 6 is characterized in that: said single-chip microcomputer (3) also is connected with pilot lamp (11); The 4th output terminal of said single-chip microcomputer (3) connects the input end of said pilot lamp (11).

8. tach signal appearance as claimed in claim 6 is characterized in that: said input media (10) is a button.