CN202916292U - Digital single-channel speed transmission meter - Google Patents
Digital single-channel speed transmission meter Download PDFInfo
- Publication number
- CN202916292U CN202916292U CN 201220541135 CN201220541135U CN202916292U CN 202916292 U CN202916292 U CN 202916292U CN 201220541135 CN201220541135 CN 201220541135 CN 201220541135 U CN201220541135 U CN 201220541135U CN 202916292 U CN202916292 U CN 202916292U
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- circuit
- rotating speed
- signal input
- single channel
- channel rotating
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Abstract
The utility model relates to a digital single-channel rotating speed transmission meter. The digital single-channel rotating speed transmission meter comprises an analog signal conditioning circuit, an analog-to-digital conversion circuit, a central processing unit, a digital-to-analog conversion circuit and a current output circuit, wherein the signal input end of the analog signal conditioning circuit is provided with signal input terminals, and the signal input terminals are the rotating speed signal input terminals. The digital single-channel rotating speed transmission meter further comprises an original signal buffer output circuit and an alarm control circuit. By adopting the digital single-channel rotating speed transmission meter, a problem can be timely found out in the case when the equipment vibrates abnormally, the person concerned is reminded to handle the problem, proper equipment can be controlled for carrying out necessary operation, the rotation state can be recorded and monitored, the mechanical equipment can be controlled to stop, and the like, thereby providing favorable conditions for timely finding out the problem and handling the problem, facilitating normal operation of the equipment, facilitating damage reduction of the equipment, and avoiding the occurrence of accidents.
Description
Technical field
The utility model relates to a kind of rotating machinery protective device, is specifically related to a kind of numeric type single channel rotating speed change of accepting the signal input of eddy current sensor and send table.
Background technology
The crucial power-equipment of the industrial circles such as large rotating machinery formula petrochemical industry, electric power, these mechanical duties of Real-Time Monitoring are for guaranteeing that its safe operation has important directive significance.General signal monitoring instrument is measured type more single, and majority is simulation detection system, and there are the shortcomings such as cost is high, the property examined is poor, the life-span is short, sensitivity is low, limitation is large, nil communication interface in more complicated when the large complicated unit of monitoring.
The utility model content
In order to overcome the defects of prior art, the purpose of this utility model is to provide a kind of numeric type single channel rotating speed to become and send table, can provide for the normal operation of supervisor group equipment simply, efficient monitoring scheme.
The technical solution of the utility model is: table is sent in a kind of numeric type single channel rotating speed change, comprise the analog signal conditioner circuit, mould/number conversion circuit, CPU (central processing unit), D/A switch circuit and the current output circuit that are linked in sequence by detected signal transfer direction, the signal input part of described analog signal conditioner circuit is provided with signal input terminal, and described signal input terminal is the tach signal input terminal.
Described numeric type single channel rotating speed change send table can also be provided with original signal Buffer output circuit, and the signal input part of described original signal Buffer output circuit connects the output terminal of described analog signal conditioner circuit.
Described CPU (central processing unit) can be connected with the communicating circuit with its two-way communication, and described communicating circuit communicates by RS485 and host computer.
Described CPU (central processing unit) can also be connected with keyboard control circuit, the control signal output terminal of described keyboard control circuit connects the corresponding control signal input end of described CPU (central processing unit), and the control signal input end of described keyboard control circuit is connected with supervisory keyboard.
Described CPU (central processing unit) can also be connected with relay circuit, and the command signal input end of described relay circuit connects the command signal output terminal of described CPU (central processing unit).
Described CPU (central processing unit) can also be connected with alarm control circuit, and the alerting signal input end of described alarm control circuit connects the alarm signal output ends of described CPU (central processing unit), and described alarm control circuit can be provided with warning bypass and warning multiple circuit.
The alarm signal output ends of described alarm control circuit can be connected with alarm element, and described alarm element can be some warnings light emitting diode, loudspeaker and/or light-emitting diode display.
The output terminal of described current output circuit can adopt the redundant active lead-out terminal of 4～20mA, comprises two independently current output terminal.
Described numeric type single channel rotating speed change send table can also be provided with power supply, and described power acquisition comprises two independently power interfaces with redundant 24DC dual power supply.
Described numeric type single channel rotating speed change send table can also be provided with housing, and each circuit can be installed in the described housing, and described signal input terminal, the active lead-out terminal of 4～20mA, alarm element and power interface all can be arranged on the panel of described housing.
The beneficial effects of the utility model: because the utility model provides analog signal conditioner, analog to digital conversion, data to process, arrive the directly complete path of output of digital-to-analog conversion, realized the on-line automatic collection of rotary speed data; Owing to being provided with alarm control circuit, in case detect unusual tach signal, at once report to the police, remind operating personnel in time to process; The utility model can dock the multiple sensors system rotating speed of rotating machinery, zero rotary speed data are carried out Real-Time Monitoring, analysis, can also provide more information for host computer and on-site service personnel, as: GAP voltage, module status, alarm condition, instantaneous value etc., be convenient in time pinpoint the problems or following contingent fault.
Description of drawings
Fig. 1 is electrical block diagram of the present utility model;
Fig. 2 is external structure schematic diagram of the present utility model.
Embodiment
Referring to Fig. 1 and Fig. 2, the utility model provides a kind of numeric type single channel rotating speed to become and has sent table, comprise the analog signal conditioner circuit 1, mould/number conversion circuit 2, CPU (central processing unit) 3, D/A switch circuit 4 and the current output circuit 6 that are linked in sequence by detected signal transfer direction, the signal input part of described analog signal conditioner circuit is provided with signal input terminal, described signal input terminal is the tach signal input terminal, be used for being mounted on the sensor on the choosing installation tool equipment to be detected, gather rotating speed, zero tach signal of rotating machinery.Because the utility model provides analog signal conditioner, analog to digital conversion, data to process, arrive the directly complete path of output of digital-to-analog conversion, can realize the on-line automatic collection of rotating machinery tach signal.
Described numeric type single channel rotating speed change send table can also be provided with original signal Buffer output circuit 9, the signal input part of described original signal Buffer output circuit connects the output terminal of described analog signal conditioner circuit, be used for exporting original undressed simulation tach signal, authenticity with holding signal, avoid information dropout, this output can be used for other monitoring instruments.Described original signal Buffer output refers to original signal sensor output, that non-filtered is processed.
Described CPU (central processing unit) can be connected with the communicating circuit 10 with its two-way communication, described communicating circuit preferably communicates by RS485 and host computer, send table to carry out the configuration setting so that host computer can become described numeric type single channel rotating speed by configuration software, also can read in real time described numeric type single channel rotating speed and become the state of table and data or the information of output sent.A plurality of described numeric type single channel rotating speeds changes send table can also rely on described communicating circuit to form a network by the Modbus rtu protocol in addition, so that becoming, realization overall monitor, different described numeric type single channel rotating speeds send table to distinguish by different ID number.
Described CPU (central processing unit) can also be connected with keyboard control circuit 11, the control signal output terminal of described keyboard control circuit connects the corresponding control signal input end of described CPU (central processing unit), the control signal input end of described keyboard control circuit is connected with supervisory keyboard, to realize artificial parameter setting and control.
Described CPU (central processing unit) can also be connected with relay circuit 12, the command signal input end of described relay circuit connects the command signal output terminal of described CPU (central processing unit), by described relay circuit pilot relay action, the duty of relevant device is controlled according to the vibration state of equipment with realization.
Described CPU (central processing unit) can also be connected with alarm control circuit 5, the alerting signal input end of described alarm control circuit connects the alarm signal output ends of described CPU (central processing unit), described alarm control circuit can be provided with warning bypass 7 and warning multiple circuit 8, the alarm signal output ends of described alarm control circuit can be connected with alarm element, described alarm element can be some warnings with light emitting diode, loudspeaker and/or light-emitting diode displays, reports to the police or realizes the warning of various ways by suitable mode.The normal condition that described alarm element can also be used for monitored system shows and the communication state demonstration.
Button on the described supervisory keyboard can comprise system reset button, "+" button and "-" button, described button cooperates described alarm element can be used for arranging the instrument alarming value, the setting of system alarm value is not limited in passes through button, also can arrange by communication interface and host computer configuration software, correspondingly, ann reset/bypass/multiplication all can field control or by host computer remote control control.
Described numeric type single channel rotating speed becomes and send the tach signal that table can measuring equipment, monitor delicately plant equipment unusual rotation and and alarm, thereby equipment is played a protective role.Judge through the comparison of described CPU (central processing unit), after analyzing when the rotating speed parameter that gathers and to enter alarm range, as greater than set high alarm setting or during less than the low alarm limit set by as described in alarm control circuit report to the police, the non-productive operation personnel in time obtain relevant information, point out it to be safeguarded, repair in advance, thereby effectively avoid the generation of major accident.
The output terminal of described current output circuit can adopt the redundant active lead-out terminal of 4～20mA, comprise two independently current output terminal, when losing efficacy, a lead-out terminal can use another lead-out terminal, the reliability of raising system, the active lead-out terminal of 4～20mA of described redundancy is corresponding with signal input terminal, consists of a signal transmission passage.
Described numeric type single channel rotating speed change send table can also be provided with power supply, is used for to each circuit supply, and described power acquisition comprises two independently power interfaces with redundant 24DC dual power supply, and another can continue as each circuit power supply is provided when a power-fail.
Described numeric type single channel rotating speed change send table can also be provided with housing, each circuit can be installed in the described housing, communication interface 18 and the power interface 19 of the lead-out terminal 16 of described signal input terminal 13, the active lead-out terminal 14 of 4～20mA, alarm element 15, original signal Buffer output circuit, supervisory keyboard 17, communicating circuit all can be arranged on the panel of described housing, conveniently to operate and to control.
The utility model in use, sensor is accessed described signal input terminal, described original signal Buffer output circuit output original signal, the signal that described sensor detects is through being input to described CPU (central processing unit) with digital signal after by described mould/number conversion circuit conversion after the described analog signal conditioner processing of circuit, the corresponding alarm condition of output after processing, drive described relay circuit work, and export corresponding current value through described D/A switch circuit and current output circuit, described numeric type single channel rotating speed becomes and send the state of table and data or the information of output to be transferred to host computer by described communicating circuit.
The utlity model has the advantages such as cheap, that reliable, the easy for installation and antijamming capability of protection is strong, mainly be applicable to the rotating machineries such as steam turbine, compressor, motor, pump, fan, fan blower, hydro-extractor and generator.
Claims (10)
1. table is sent in a numeric type single channel rotating speed change, it is characterized in that comprising analog signal conditioner circuit, mould/number conversion circuit, CPU (central processing unit), D/A switch circuit and the current output circuit that is linked in sequence by detected signal transfer direction, the signal input part of described analog signal conditioner circuit is provided with signal input terminal, and described signal input terminal is the tach signal input terminal.
2. table is sent in numeric type single channel rotating speed change as claimed in claim 1, it is characterized in that it also is provided with original signal Buffer output circuit, and the signal input part of described original signal Buffer output circuit connects the output terminal of described analog signal conditioner circuit.
3. numeric type single channel rotating speed as claimed in claim 2 becomes and send table, it is characterized in that described CPU (central processing unit) is connected with the communicating circuit with its two-way communication, and described communicating circuit communicates by RS485 and host computer.
4. table is sent in numeric type single channel rotating speed change as claimed in claim 3, it is characterized in that described CPU (central processing unit) also is connected with keyboard control circuit, the control signal output terminal of described keyboard control circuit connects the corresponding control signal input end of described CPU (central processing unit), and the control signal input end of described keyboard control circuit is connected with supervisory keyboard.
5. table is sent in numeric type single channel rotating speed change as claimed in claim 4, it is characterized in that described CPU (central processing unit) also is connected with relay circuit, and the command signal input end of described relay circuit connects the command signal output terminal of described CPU (central processing unit).
6. become such as claim 1,2,3,4 or 5 described numeric type single channel rotating speeds and send table, it is characterized in that described CPU (central processing unit) also is connected with alarm control circuit, the alerting signal input end of described alarm control circuit connects the alarm signal output ends of described CPU (central processing unit), and described alarm control circuit is provided with warning bypass and warning multiple circuit.
7. table is sent in numeric type single channel rotating speed change as claimed in claim 6, it is characterized in that the alarm signal output ends of described alarm control circuit is connected with alarm element, and described alarm element is some warnings light emitting diode, loudspeaker and/or light-emitting diode displays.
8. table is sent in numeric type single channel rotating speed change as claimed in claim 7, it is characterized in that the output terminal of described current output circuit adopts the redundant active lead-out terminal of 4～20mA, comprises two independently current output terminal.
9. table is sent in numeric type single channel rotating speed change as claimed in claim 8, it is characterized in that it also is provided with power supply, and described power acquisition comprises two independently power interfaces with redundant 24DC dual power supply.
10. table is sent in numeric type single channel rotating speed change as claimed in claim 9, it is characterized in that it also is provided with housing, each circuit is installed in the described housing, and described signal input terminal, the active lead-out terminal of 4～20mA, alarm element and power interface all are arranged on the panel of described housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220541135 CN202916292U (en) | 2012-10-22 | 2012-10-22 | Digital single-channel speed transmission meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220541135 CN202916292U (en) | 2012-10-22 | 2012-10-22 | Digital single-channel speed transmission meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202916292U true CN202916292U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220541135 Expired - Fee Related CN202916292U (en) | 2012-10-22 | 2012-10-22 | Digital single-channel speed transmission meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202916292U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045142A (en) * | 2019-04-30 | 2019-07-23 | 中广核核电运营有限公司 | Monitoring reliability system, revolving speed rack and system with monitoring reliability function |
-
2012
- 2012-10-22 CN CN 201220541135 patent/CN202916292U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045142A (en) * | 2019-04-30 | 2019-07-23 | 中广核核电运营有限公司 | Monitoring reliability system, revolving speed rack and system with monitoring reliability function |
| CN110045142B (en) * | 2019-04-30 | 2021-06-22 | 中广核核电运营有限公司 | Reliability monitoring system, rotating speed rack with reliability monitoring function and system |
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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: 20130501 Termination date: 20171022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |