CN201662446U - Temperature monitoring module - Google Patents
Temperature monitoring module Download PDFInfo
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- CN201662446U CN201662446U CN2010201231424U CN201020123142U CN201662446U CN 201662446 U CN201662446 U CN 201662446U CN 2010201231424 U CN2010201231424 U CN 2010201231424U CN 201020123142 U CN201020123142 U CN 201020123142U CN 201662446 U CN201662446 U CN 201662446U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 41
- 238000012545 processing Methods 0.000 claims abstract description 37
- 238000004891 communication Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims description 9
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Abstract
The utility model relates to a temperature monitoring module, which comprises a power switching circuit, a temperature signal conditioning circuit, an A/D change-over circuit, a central processing unit, a D/A change-over circuit, a current output circuit, an alarming output circuit and a communication interface circuit, wherein the power switching circuit is connected with a power supply input terminal of the central processing unit; an output terminal of the temperature signal conditioning circuit is connected with an input terminal of the A/D change-over circuit, an output terminal of the A/D change-over circuit is connected with a signal input terminal of the central processing unit, a signal output terminal of the central processing unit is connected with an input terminal of the D/A change-over circuit, and an output terminal of the D/A change-over circuit is connected with the current output circuit; the alarming output circuit is connected with an alarming signal output terminal of the central processing unit, and the signal communication terminal of the central processing unit is connected with the communication interface circuit. The temperature monitoring module has the advantages of simple structure and high reliability and stability, and can be applied to real-time monitoring of temperature signals of rotary machinery.
Description
Technical field
The utility model relates to a kind of monitoring modular, relates in particular to a kind of temperature monitoring module that is used for the rotating machinery vibrating protection system, belongs to the intelligent instrumentation field.
Background technology
In recent years, the industry that the large enterprise that works continuously is related, as: mechanical industry, petroleum chemical industry, steel industry, power industry and metallurgy industry etc., because the backwardness of condition monitoring for rotating machinery system, cause a lot of visual plants impaired, cause a serious accident, caused the economic loss that is difficult to estimate for unit and country, produce serious social influence.To the timely discovering device fault that may occur of the monitoring of rotating machinery process variable (flow, pressure and temperature etc.), so that safeguarded before the catastrophic failure taking place.And present, the kind of relevant condition monitoring for rotating machinery system is a lot, but the composition system generally needs a lot of instrument and meters, and integrated degree is low, so volume ratio is bigger, compares heaviness, and price is very high, and is difficult in maintenance, gives and produces and bring safely a lot of hidden danger.For fear of these shortcomings, enterprise tends to adopt as much as possible some easy equipment, but have that precision is low, poor reliability, the life-span is short, sensitivity is low, limitation is big and defective such as nil communication interface.
The utility model content
In order to overcome the above-mentioned defective of prior art; solid being of the present utility model provides a kind of temperature monitoring module; this module reliability and stability are high, and the temperature in the time of can be to unit, machine run provides safe and reliable real-time monitoring, can be applied in the various rotating machinery vibrating protection systems.
The technical solution adopted in the utility model: a kind of temperature monitoring module, comprise power-switching circuit, the temperature signal regulation circuit, the A/D change-over circuit, CPU (central processing unit), the D/A change-over circuit, current output circuit, warning output circuit and communication interface circuit, described power-switching circuit connects the power input of described CPU (central processing unit), described temperature signal regulation circuit is provided with temperature sensor inputs, its output terminal connects the input end of analog signal of described A/D change-over circuit, the digital signal output end of described A/D change-over circuit connects the signal input part of described CPU (central processing unit), the signal output part of described CPU (central processing unit) connects the digital signal input end of described D/A change-over circuit, the analog signal output of described D/A change-over circuit connects described current output circuit, described warning output circuit connects the alarm signal output ends of described CPU (central processing unit), and the signal communication end of described CPU (central processing unit) connects described communication interface circuit.
Described power-switching circuit can adopt the power-switching circuit of supporting redundant power input power supply or single supply input power supply.
The input end of described temperature signal regulation circuit can adopt switchable thermocouple sensor input pattern and thermal resistance sensor input pattern.
Described temperature signal regulation circuit can be provided with eight temperature sensor inputs, and described current output circuit can be provided with and corresponding eight current output terminals of the temperature sensor inputs of described temperature signal regulation circuit.
Described warning output circuit can be connected with alarm element, and described alarm element can adopt some warnings light emitting diode, alarm speaker and/or LED light.
Described warning output circuit can be provided with the warning bypass.
Described communication interface circuit can be provided with the communication interface corresponding to the system bus port.
Described temperature monitoring module can also comprise self-detection circuit, and described self-detection circuit can connect the detection signal output terminal of described CPU (central processing unit).
Described temperature monitoring module can also comprise indicating circuit, and the input end of described indicating circuit can connect the working state signal output terminal of described CPU (central processing unit), and output terminal connects display device.
Described temperature monitoring module can be provided with header board and back plate, described alarm element can be arranged on the described header board, the current output terminal of described current output circuit can be arranged on the plate of described back, can also be provided with the input end mode selector switch of described temperature signal regulation circuit on the plate of described back, described temperature monitoring module can be provided with it is plugged on connected structure on the data communication base plate.
The beneficial effects of the utility model: the utility model is simple in structure, and cost is low, has high reliability and stability, and the temperature in the time of can working to unit provides real-time monitoring, by devices exchange information such as digitized mode and PLC, DCS and computing machines.The utility model and other module cooperate can form the condition monitoring for rotating machinery system, using special-purpose configuration software to move with running parameter all modules disposes, can also write down alert event and system event, make things convenient for the running status of user inquiring time of fire alarming, warning passage and each passage.Use the Modbus rtu protocol to carry out communication with miscellaneous equipment neatly through communication interface.Temperature when the utility model can be to unit, machine works provides safe and reliable protection monitoring, can be applied in the vibration protection system of multiple rotating machineries such as the hydraulic turbine, steam turbine, fan blower, water pump, compressor, gear machine, exciter and motor.
Description of drawings
Fig. 1 is an electrical block diagram of the present utility model;
Fig. 2 is a structural representation of the present utility model.
Embodiment
Referring to Fig. 1 and 2, the utility model provides a kind of temperature monitoring module, comprise power-switching circuit 1, temperature signal regulation circuit 2, A/D change-over circuit 3, CPU (central processing unit) 4, D/A change-over circuit 6, current output circuit 7, warning output circuit 5 and communication interface circuit 8, described power-switching circuit connects the power input of described CPU (central processing unit), described temperature signal regulation circuit is provided with temperature sensor inputs, its output terminal connects the input end of analog signal of described A/D change-over circuit, the digital signal output end of described A/D change-over circuit connects the signal input part of described CPU (central processing unit), the signal output part of described CPU (central processing unit) connects the digital signal input end of described D/A change-over circuit, the analog signal output of described D/A change-over circuit connects described current output circuit, described warning output circuit connects the alarm signal output ends of described CPU (central processing unit), and the signal communication end of described CPU (central processing unit) connects described communication interface circuit.
Described power-switching circuit can adopt the power-switching circuit of supporting redundant power input power supply or single supply input power supply, the preferred power-switching circuit of supporting redundant power input power supply that adopts, another one can continue as system power supply is provided when a power-fail, thereby improved the reliability of system greatly, required various voltages when exporting temperature monitoring module operate as normal described in the utility model, as+5V ,+3V etc.
Described temperature monitoring module can also comprise self-detection circuit 9 and indicating circuit, described self-detection circuit can connect the detection signal output terminal of described CPU (central processing unit), the input end of described indicating circuit can connect the working state signal output terminal of described CPU (central processing unit), output terminal connects display device, by the display device that described indicating circuit is connected with its output terminal, the running status that can indicate the condition monitoring for rotating machinery system.
Described temperature monitoring module can be connected with majority temperature sensor commonly used, by system configuration software each passage is configured, typical sensor comprises PT100 (alpha=0.00385), PT100 (alpha=0.00392), NI120 and the CU10 type thermal resistance of E, J, K, T type thermopair and three-wire system, four-wire system.The input end of described temperature signal regulation circuit can adopt switchable thermocouple sensor input pattern and thermal resistance sensor input pattern, so that according to different sensor type automatic switchover input patterns, have high intelligent, be very easy to execute-in-place, circuit under the thermocouple sensor input pattern can also be provided with the cold junction compensation device, this device can adopt digital temperature sensor, convenient and described CPU (central processing unit) direct communication.
Described temperature monitoring module can be provided with eight passages that work alone, and each passage can be configured to different parameter configurations, as different temperature sensor type, temperature range and alarm set points etc.Corresponding with described eight passages that work alone, described temperature signal regulation circuit can be provided with eight temperature sensor inputs, can insert temperature sensor input from eight different measuring points, and only by a CPU (central processing unit) data of gathering are handled, greatly improved the hyperchannel processing power, reduce cost, improved cost performance.Described current output circuit can be provided with and corresponding eight current output terminals of the temperature sensor inputs of described temperature signal regulation circuit.
The current signal of the current output terminal output of described current output circuit can be 4～20mA current signal of industrial standard, the all temps signal of sensor inserts the input end of described input signal conditioning circuit, converting digital signal to through described A/D change-over circuit is input in the described CPU (central processing unit), described CPU (central processing unit) goes out temperature value according to algorithm computation, through the overstable described D/A change-over circuit output correspondent voltage value of high precision, export 4～20mA electric current of industrial standard again through accurate described current output circuit, the corresponding output of the temperature value of full scale lower limit 4mA current signal, the corresponding output of the temperature value of full scale upper limit 20mA current signal, the current value of the output correspondence that middle temperature is linear, can convert nonlinear temperature sensor signal to linear 4～20mA electric current output, transmit farther distance, thereby conveniently be connected into PLC, other rotating machinery watch-dogs such as DCS or computing machine.
Described warning output circuit can be connected with alarm element 10,11 and 12, described alarm element can adopt some warning light emitting diodes, alarm speaker and/or LED light, can realize warning function by described warning output circuit, the temperature sensor signal of gathering when described temperature signal regulation circuit produces during greater than the high alarming value of setting or less than the low alarming value set after described CPU (central processing unit) analyzing and processing and reports to the police, can adopt multistage alarm mode to improve reliability, and allow the user to make amendment according to actual conditions, described warning output circuit can adopt large scale integrated circuit, has high integration, advantages such as quick response and high reliability.Described warning output circuit can be provided with the warning bypass; described warning bypass can realize software warning bypass by software setting; also can use the hardware alarms bypass, fundamental purpose be prevent machinery under certain specified conditions such as may be in the Installation and Debugging process because various sensors and testee also do not have complete stability to cause that false alarm causes the situation generation of shutting down.Can also realize the locking of reporting to the police by software setting, promptly still keep alarm condition in the certain condition scope after alert if disappears, the generation of the situation of reporting to the police improved the stability of reporting to the police greatly to prevent that temperature value fluctuates up and down and causes back and forth at alarm set point.
Described communication interface circuit can be provided with the communication interface corresponding to the system bus port.
Described temperature monitoring module can be provided with header board and back plate, described alarm element can be arranged on the described header board, the current output terminal of described current output circuit can be arranged on the plate of described back, can also be provided with the input end mode selector switch of described temperature signal regulation circuit on the plate of described back, conveniently the input end pattern of described temperature signal regulation circuit is switched, described temperature monitoring module can be provided with it is plugged on connected structure on the data communication base plate, by described connected structure, described temperature monitoring module can be plugged on the data communication base plate on the corresponding inserting groove position, and carries out communication by system bus and other correlation module.
The utility model is simple in structure; cost is low; has high reliability and stability; can provide real-time monitoring to the temperature of unit in the course of the work, can be applied in the vibration protection system of multiple rotating machineries such as the hydraulic turbine, steam turbine, fan blower, water pump, compressor, gear machine, exciter and motor.
Claims (10)
1. temperature monitoring module, it is characterized in that comprising power-switching circuit, the temperature signal regulation circuit, the A/D change-over circuit, CPU (central processing unit), the D/A change-over circuit, current output circuit, warning output circuit and communication interface circuit, described power-switching circuit connects the power input of described CPU (central processing unit), described temperature signal regulation circuit is provided with temperature sensor inputs, its output terminal connects the input end of analog signal of described A/D change-over circuit, the digital signal output end of described A/D change-over circuit connects the signal input part of described CPU (central processing unit), the signal output part of described CPU (central processing unit) connects the digital signal input end of described D/A change-over circuit, the analog signal output of described D/A change-over circuit connects described current output circuit, described warning output circuit connects the alarm signal output ends of described CPU (central processing unit), and the signal communication end of described CPU (central processing unit) connects described communication interface circuit.
2. temperature monitoring module as claimed in claim 1 is characterized in that described power-switching circuit adopts the power-switching circuit of supporting redundant power input power supply or single supply input power supply.
3. temperature monitoring module as claimed in claim 2 is characterized in that the input end of described temperature signal regulation circuit adopts switchable thermocouple sensor input pattern and thermal resistance sensor input pattern.
4. temperature monitoring module as claimed in claim 3, it is characterized in that described temperature signal regulation circuit is provided with eight temperature sensor inputs, described current output circuit is provided with and corresponding eight current output terminals of the temperature sensor inputs of described temperature signal regulation circuit.
5. temperature monitoring module as claimed in claim 4 is characterized in that described warning output circuit is connected with alarm element, and described alarm element adopts some warnings light emitting diode, alarm speaker and/or LED light.
6. temperature monitoring module as claimed in claim 5 is characterized in that described warning output circuit is provided with the warning bypass.
7. temperature monitoring module as claimed in claim 6 is characterized in that described communication interface circuit is provided with the communication interface corresponding to the system bus port.
8. temperature monitoring module as claimed in claim 7 is characterized in that it also comprises self-detection circuit, and described self-detection circuit connects the detection signal output terminal of described CPU (central processing unit).
9. temperature monitoring module as claimed in claim 8 is characterized in that it also comprises indicating circuit, and the input end of described indicating circuit connects the working state signal output terminal of described CPU (central processing unit), and output terminal connects display device.
10. as claim 1,2,3,4,5,6,7,8 or 9 described temperature monitoring modules, it is characterized in that it is provided with header board and back plate, described alarm element is arranged on the described header board, the current output terminal of described current output circuit is arranged on the plate of described back, also be provided with the input end mode selector switch of described temperature signal regulation circuit on the plate of described back, described temperature monitoring module is provided with it is plugged on connected structure on the data communication base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201231424U CN201662446U (en) | 2010-02-26 | 2010-02-26 | Temperature monitoring module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201231424U CN201662446U (en) | 2010-02-26 | 2010-02-26 | Temperature monitoring module |
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| Publication Number | Publication Date |
|---|---|
| CN201662446U true CN201662446U (en) | 2010-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201231424U Expired - Fee Related CN201662446U (en) | 2010-02-26 | 2010-02-26 | Temperature monitoring module |
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| Country | Link |
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| CN (1) | CN201662446U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620850A (en) * | 2012-02-10 | 2012-08-01 | 西北工业大学 | Oil surface thermograph for transformer |
| CN103411701A (en) * | 2013-08-22 | 2013-11-27 | 四川大学 | Automatic temperature monitoring system for power station tail water or riverway water |
-
2010
- 2010-02-26 CN CN2010201231424U patent/CN201662446U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620850A (en) * | 2012-02-10 | 2012-08-01 | 西北工业大学 | Oil surface thermograph for transformer |
| CN102620850B (en) * | 2012-02-10 | 2013-06-19 | 西北工业大学 | A Transformer Oil Surface Temperature Meter |
| CN103411701A (en) * | 2013-08-22 | 2013-11-27 | 四川大学 | Automatic temperature monitoring system for power station tail water or riverway water |
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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: 20101201 Termination date: 20150226 |
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| EXPY | Termination of patent right or utility model |