CN202083515U - Voltage stabilizing type pressure sensing circuit for negative-pressure switch - Google Patents
Voltage stabilizing type pressure sensing circuit for negative-pressure switch Download PDFInfo
- Publication number
- CN202083515U CN202083515U CN2011201995413U CN201120199541U CN202083515U CN 202083515 U CN202083515 U CN 202083515U CN 2011201995413 U CN2011201995413 U CN 2011201995413U CN 201120199541 U CN201120199541 U CN 201120199541U CN 202083515 U CN202083515 U CN 202083515U
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- pressure sensor
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Abstract
The utility model discloses a voltage stabilizing type pressure sensing circuit for a negative-pressure switch. In the utility model, a power supply is connected with a high-potential voltage input end of a three-end voltage stabilizer in a matched manner through two pairs of power supply terminals of a wiring terminal array, the high-potential input end of the three-end voltage stabilizer is connected with a pair of power input wiring terminals of a passive pressure sensor respectively in a matched manner through a common low-potential end, the three-end voltage stabilizer is used for providing stabilized voltage of the power supply to the passive pressure sensor through a high-potential output end of the three-end voltage stabilizer, the passive pressure sensor is used for transmitting a pressure signal which is sensed by the passive pressure sensor to a PLC (Programmable Logic Controller) through a pair of wiring terminals of the wiring terminal array, the high-potential output end and the common low-potential end of the three-end voltage stabilizer are mutually connected through a filter capacitor, and one output terminal of the two pairs of power supply terminals of the wiring terminal array is connected with the high-potential input end of the three-end voltage stabilizer through a divider resistor. When the voltage stabilizing type pressure sensing circuit is adopted, a voltage value output by the voltage stabilizing type pressure sensing circuit is more stable, the problem of an unstable negative pressure in an air box is solved, and the unstable negative pressure in the air box can be avoided.
Description
Technical field
The utility model relates to weaving electric switch field, belongs to the improvement to the pressure sensor circuit structure, particularly negative pressure switch voltage regulation type pressure sensor circuit.
Background technology
Various impurity such as the Yarn break that the air draught blower fan of existing G5/1 type spinning frame is produced when being used for equipment operation, flyings siphon away, and guarantee quality of yarn.The air intake device of G5/1 type spinning frame is by airduct and inhale cotton bellows two large divisions and forms, and bellows are positioned at the tailstock and link to each other with electric appliance box, and preceding have a filter screen, and exhaust outlet is arranged down, and continuous with inhaling cotton airduct.When spinning, motor drives the blower fan running by transmission shaft, make by aspiration channel and to produce negative pressure in the special-shaped aspiration channel, when spinning frame is driven running, cotton sucking blower fan blade high speed rotating, air draft downwards produces negative pressure in the bellows, form negative pressure cavity, the airduct that is connected with bellows is corresponding also to have negative pressure to produce, and the broken end in the spun yarn running is drawn onto in the airduct, focuses at last on the filter screen, wait for that the spinner regularly clears up, the problem that exists is every five, just need the spinner in time to remove waste cotton and flyings on the filter screen in six hours, when the long-pending flower on the filter screen reaches certain thickness, can influence the unobstructed of air channel, inhale cotton deleterious, roller twines flower easily.Though existing factory transforms the air intake device of spinning frame, change the air draft of original ground, bellows are directly linked to each other with the air draught blower fan, control the air draught blower fan by regulating the frequency converter rotating speed, thereby the negative pressure in the control bellows does not need the frequent cleaning air draught filter screen of spinner after the transformation, and only the flyings that need regularly clean in the bellows get final product, reduce spinner's labour intensity, negative pressure is maintained in the metastable scope.But improved air intake device; it is fluctuated negative pressure value often to occur; unsettled phenomenon; cause the blower fan air draught undesired; frequency converter is reported to the police; the equipment frequent shutdown; finally cause sliver to twine roller; waste cotton is increased; faults such as full car broken end; negative pressure unsettled former because: negative pressure switch (pressure transducer) is an extremely sensitive sensor; be easy to be subjected to the influence of external environment; because negative pressure switch is very sensitive, very easily is subjected to the influence of external environment, as vibrations; dust; various factorss such as humiture all can influence the running of negative pressure switch; make its inside that very big voltage fluctuation be arranged; to negative pressure exponent error in judgement in the negative pressure cavity, thereby export unsettled voltage signal, cause the PLC operation mistake; frequency converter frequency changes unstable, causes spread of voltage.
The utility model content
The purpose of this utility model is to provide a kind of negative pressure switch voltage regulation type pressure sensor circuit, and the magnitude of voltage of output is more stable, and it is fluctuated to have solved the interior negative pressure value of bellows, can stop the unsettled phenomenon of negative pressure value in the bellows.
The purpose of this utility model is achieved in that a kind of negative pressure switch voltage regulation type pressure sensor circuit, the be connected noble potential input end of three terminal regulator voltage of two pair power supply side of power supply by connecting terminal block, be connected the respectively a pair of power supply input terminal of passive pressure transducer of the noble potential output terminal of three terminal regulator and public cold end, three terminal regulator is powered the power supply voltage stabilizing to passive pressure transducer through its noble potential output terminal, passive pressure transducer is passed to PLC with its pressure sensor signal by pair of terminals of connecting terminal block, connect by a filter capacitor between the noble potential output terminal of three terminal regulator and the public cold end, the lead-out terminal in two pairs of power supply side in the connecting terminal block connects the noble potential input end of three terminal regulator by divider resistance.
The utility model adds the divider resistance that is connected with three terminal regulator noble potential input end, be that divider resistance connects a lead-out terminal and the three terminal regulator noble potential input end in connecting terminal block power supply side, between three terminal regulator noble potential output terminal and public cold end, connect by filter capacitor, divider resistance can further play the effect of burning voltage and restriction electric current to passive pressure transducer, and can leaching passive pressure transducer, filter capacitor receives radio-frequency component in the voltage, make passive pressure transducer operating voltage more stable, more reliable, when the negative pressure of passive pressure sensor monitoring in the bellows negative pressure cavity is below or above limit value, can send the 0-5V voltage signal to frequency converter, change the frequency of frequency converter, make motor speed accelerate or slow down, control negative pressure value in the bellows negative pressure cavity with this, make stable equipment operation.The magnitude of voltage of the utility model output is more stable, and it is fluctuated to have solved the interior negative pressure value of bellows, can stop the unsettled phenomenon of negative pressure value in the bellows.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Accompanying drawing is a circuit connection structure synoptic diagram of the present utility model.
Embodiment
A kind of negative pressure switch voltage regulation type pressure sensor circuit, as shown in drawings, the be connected noble potential input end of three terminal regulator 3 voltages of two pair power supply side of power supply by connecting terminal block 1, be connected the respectively a pair of power supply input terminal of passive pressure transducer 5 of the noble potential output terminal of three terminal regulator 3 and public cold end, three terminal regulator 3 is powered the power supply voltage stabilizing to passive pressure transducer 5 through its noble potential output terminal, passive pressure transducer 5 is passed to PLC6 with its pressure sensor signal by pair of terminals of connecting terminal block 1, PLC6 is existing programmable logic controller (PLC), connect by a filter capacitor 4 between the noble potential output terminal of three terminal regulator 3 and the public cold end, promptly with respect to the voltage output end (its noble potential output terminal and public cold end) of three terminal regulator 3, this filter capacitor 4 is in parallel with a pair of power supply input terminal of passive pressure transducer 5, lead-out terminal in 1 two pairs of power supply side of connecting terminal block connects the noble potential input end of three terminal regulator 3 by divider resistance 2, promptly with respect to the voltage input end (its noble potential input end and public cold end) of three terminal regulator 3 and the closed-loop path of power supply formation, this divider resistance 2 is in series with three terminal regulator 3.
Claims (1)
1. negative pressure switch voltage regulation type pressure sensor circuit, the be connected noble potential input end of three terminal regulator (3) voltage of two pair power supply side of power supply by connecting terminal block (1), be connected the respectively a pair of power supply input terminal of passive pressure transducer (5) of the noble potential output terminal of three terminal regulator (3) and public cold end, three terminal regulator (3) is powered the power supply voltage stabilizing to passive pressure transducer (5) through its noble potential output terminal, passive pressure transducer (5) is passed to PLC (6) with its pressure sensor signal by pair of terminals of connecting terminal block (1), it is characterized in that: connect by a filter capacitor (4) between the noble potential output terminal of three terminal regulator (3) and the public cold end, the lead-out terminal in two pairs of power supply side in the connecting terminal block (1) connects the noble potential input end of three terminal regulator (3) by divider resistance (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201995413U CN202083515U (en) | 2011-06-14 | 2011-06-14 | Voltage stabilizing type pressure sensing circuit for negative-pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201995413U CN202083515U (en) | 2011-06-14 | 2011-06-14 | Voltage stabilizing type pressure sensing circuit for negative-pressure switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202083515U true CN202083515U (en) | 2011-12-21 |
Family
ID=45344141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201995413U Expired - Lifetime CN202083515U (en) | 2011-06-14 | 2011-06-14 | Voltage stabilizing type pressure sensing circuit for negative-pressure switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202083515U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389060A (en) * | 2014-11-19 | 2015-03-04 | 经纬纺织机械股份有限公司 | Draught fan and inverter device of spinning frame |
-
2011
- 2011-06-14 CN CN2011201995413U patent/CN202083515U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389060A (en) * | 2014-11-19 | 2015-03-04 | 经纬纺织机械股份有限公司 | Draught fan and inverter device of spinning frame |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111221 |
|
| CX01 | Expiry of patent term |