CN201576045U - Current detecting device of displacement sensor - Google Patents
Current detecting device of displacement sensor Download PDFInfo
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- CN201576045U CN201576045U CN2009202140218U CN200920214021U CN201576045U CN 201576045 U CN201576045 U CN 201576045U CN 2009202140218 U CN2009202140218 U CN 2009202140218U CN 200920214021 U CN200920214021 U CN 200920214021U CN 201576045 U CN201576045 U CN 201576045U
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Abstract
The utility model discloses a current detecting device of a displacement sensor, which comprises a direct-current booster unit, a current detecting unit, a detecting joint and a display unit. An input end of the direct-current booster unit is connected with a power supply battery provided with a power switch; a power input end of the current detecting unit is connected with an output end of the direct-current booster unit; the current detecting unit is used for receiving boosted voltage; the detecting joint includes a power interface and a current test joint; the power interface is connected with the output end of direct-current booster unit; the current test joint is connected with the power input end of the current detecting unit; a test loop is formed by the current test joint and the to-be-detected displacement sensor; the current test joint receives current signals of the displacement sensor; an input end of the display unit is connected with an output end of the current detecting unit; and the current detecting unit is capable of detecting the current signals of the displacement sensor, thereby being capable of rapidly obtaining real-time work current of the displacement sensor. Besides, the direct-current booster unit is capable of boosting common dry batteries in direct current manner and enabling the volume of the current detecting device to be substantially decreased.
Description
Technical field
The utility model relates to the current detection technology of displacement transducer, more particularly relates to a kind of current sensing means of displacement transducer.
Background technology
In the production run of hot rolled pipe, for the closed-loop control that realizes that carry-over pinch rolls and three rollers centering height and aperture are regulated, the displacement transducer based on magnetostriction principle has been installed by portion within it, detect the position that is embedded in the piston body internal magnetic ring by an induction connecting rod that inserts in the oil cylinder piston cylinder, reaching measurement oil cylinder stroke is the purpose of piston absolute position.Therefore the effect of closed-loop control is determined by the state of displacement transducer.At present to the test of displacement transducer mainly be by displacement transducer its own power source line and signal wire by the connection terminal of a plurality of centres after the most at last test signal send into the analog quantity tablet of motor room central controller, if it is 4-20mA that the displacement transducer that records detects the electric current in loop, then the detail bit displacement sensor is in normal operating conditions.Because carry-over pinch rolls and three-roller centring device all are to belong to cycle replacing part, so are provided with the connection terminal of a plurality of centres in the electric signal transmission path, are convenient to when needed damaged part and damaged location be changed.But any one loose contact occurs or damage in insulation appears in signal cable in the middle connection terminal, the unusual of detection signal caused in the capital, and also there is the unusual possibility of generation in the displacement transducer body, in case the data in the central controller occur being difficult to where distinguish the trouble spot fast when unusual.Present inspection is mainly manual type, reaches the purpose of fixing a breakdown, very time-consuming, effort by respectively the joint of a plurality of connection terminals and displacement transducer being investigated one by one.And the volume of central controller is big, moves inconvenience, central controller can not be moved to displacement transducer easily and directly test.
The utility model content
Detect the too much problem of link in the loop at the displacement transducer that exists in the prior art, the purpose of this utility model provides a kind of current sensing means of displacement transducer, can judge the quality of displacement transducer timely.
For achieving the above object, the utility model adopts following technical scheme:
A kind of current sensing means of displacement transducer comprises:
The DC boosting unit, its input end is connected with the supplying cell that is provided with power switch;
Current detecting unit, its power input is connected with the output terminal of DC boosting unit, receives the voltage through boosting;
Detection tabs comprises power interface and testing current interface, and power interface is connected with the output terminal of DC boosting unit; The testing current interface is connected with the current input terminal of current detecting unit, constitutes test loop with tested displacement transducer and receives the current signal of displacement transducer;
Display unit, its input end is connected with the output terminal of current detecting unit, the A/D switching signal of received current detecting unit output.
Described current sensing means also comprises commutation circuit, commutation circuit comprises the two groups of change-over switches switched synchronously and electricity folder, one end of one group of change-over switch is connected with the output terminal of DC boosting unit, and the other end switches between the power interface of the power interface of detection tabs and electricity folder; The end that another group is changed switch is connected with the current input terminal of current detecting unit, and the other end switches between the testing current interface of the testing current interface of detection tabs and electricity folder.
Described current detecting unit comprises:
Reduction voltage circuit, its input end is connected with the output terminal of DC boosting unit;
Preposition shaping circuit, its input end be connected with the testing current interface of detection tabs or with electricity folder the testing current interface is connected the current signal of reception displacement transducer;
Single-chip microcomputer, its input end link to each other with the output terminal of reduction voltage circuit and the output terminal of preposition shaping circuit respectively, receive the current test signal through shaping, and its output terminal is connected with the input end of display unit.
Described DC boosting unit comprises:
Integrated chip, its input end is connected with supplying cell;
Filter regulator circuit, its input end is connected with the output terminal of integrated chip, produces the voltage through boosting.
Described display unit comprises seven segment code pipe and status indicator lamp, and the input end of seven segment code pipe and status indicator lamp links to each other with the output terminal of single-chip microcomputer respectively.
In technique scheme, the current sensing means of a kind of displacement transducer of the present utility model comprises: the DC boosting unit, and its input end is connected with the supplying cell that is provided with power switch; Current detecting unit, its power input is connected with the output terminal of DC boosting unit, receives the voltage through boosting; Detection tabs comprises power interface and testing current interface, and power interface is connected with the output terminal of DC boosting unit; The testing current interface is connected with the current input terminal of current detecting unit, constitutes test loop with displacement transducer and receives the current signal of displacement transducer; Display unit, its input end is connected with the output terminal of current detecting unit, the A/D switching signal of received current detecting unit output.Current detecting unit can detect the current signal of displacement transducer, thereby can obtain the real-time working electric current of displacement transducer fast, for fixing a breakdown and testing spare part etc. and saved plenty of time and resource.And adopt the DC boosting unit to carry out DC boosting to common battery, and the volume of current sensing means is reduced significantly, be easy to carry, and highly versatile simple to operate.
Description of drawings
Fig. 1 is the principle of work schematic block diagram of the current sensing means of the utility model displacement transducer;
Fig. 2 is the circuit theory diagrams of DC boosting unit among Fig. 1;
Fig. 3 is the circuit theory diagrams of current detecting unit and display unit among Fig. 1.
Embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
See also the current sensing means 10 of a kind of displacement transducer shown in Figure 1, comprise DC boosting unit 11, its input end is connected with the supplying cell that is provided with power switch K1.See also shown in Figure 2ly, DC boosting unit 11 comprises: 555 integrated chips 111, and its input end is connected with supplying cell, and this circuit can be elevated to 24V voltage to the 6V DC voltage by the higher-order of oscillation.Filter regulator circuit 112, its input end is connected with the output terminal of 555 integrated chips 111, after acceptance is elevated to the voltage of 24V through the higher-order of oscillation, this voltage is delivered to triode D1 and after the voltage stabilizing of the filtering of electric capacity D2 and voltage stabilizing diode D3, export, one the road supplies with displacement transducer, and detecting unit 12 is given on another road.See also current detecting unit shown in Figure 3 12, its power input is connected with the output terminal of DC boosting unit 11, receives the voltage through boosting; Current detecting unit 12 comprises: reduction voltage circuit 121, and its input end is connected with the output terminal of DC boosting unit 11, and the 24V power supply that receives is converted into the required working power of single-chip microcomputer by internal circuit; Preposition shaping circuit 122, its input end be connected with the testing current interface of detection tabs 13 or with electricity folder 161 the testing current interface is connected the current signal of reception displacement transducer; STC12 series monolithic 123, its input end link to each other with the output terminal of reduction voltage circuit 121 and the output terminal of preposition shaping circuit 122 respectively, receive the current test signal through shaping, and its output terminal is connected with the input end of display unit 15.Six pin detection tabs 13 (referring to Fig. 1) comprise power interface and testing current interface, and power interface is connected with the output terminal of DC boosting unit 11; The testing current interface is connected with the current input terminal of current detecting unit 12, constitutes test loop with displacement transducer and receives the current signal of displacement transducer; See also display unit shown in Figure 3 15 again, its input end is connected with the output terminal of current detecting unit 12, the A/D switching signal of received current detecting unit 12 outputs.Current sensing means 10 also comprises commutation circuit 16, commutation circuit 16 comprises two groups of change-over switch K2 that switch synchronously and electricity folder 161, one end that switches K switch 2 is connected with the output terminal of DC boosting unit, and the other end switches between the power interface of detection tabs and the electric power interface that presss from both sides; The end of another change-over switch K2 is connected with the current input terminal of current detecting unit, and the other end switches between the testing current interface of the testing current interface of detection tabs and electricity folder.Display unit 15 comprises seven segment code pipe 151 and status indicator lamp 152, and the input end of seven segment code pipe 151 and status indicator lamp 152 links to each other with the output terminal of single-chip microcomputer 123 respectively.Single-chip microcomputer 123 converts current measurement value to the current value (normal value is 4-20mA) that shows displacement transducer behind the digital quantity by three seven segment code pipes 151 by internal logic.Status indicator lamp 152 comprises two light emitting diode and light emitting diodes that show normal operation of sending overload alarm, when single-chip microcomputer 123 internal logics judge that current measurement value is not in normal scope, send overload alarm by two status indicator lamps 152.Also having a status indicator lamp 152 is relay indicating lights.
During off-line test, at first six pin detection tabs 13 are directly inserted the top of displacement transducer, then change-over switch K2 is got to the output terminal that makes DC boosting unit 11 on the J1 and the current input terminal and detection tabs 13 conductings of current detecting unit 12, then power switch K1 is closed a floodgate, seven segment code pipe 151 shows the current value of displacement transducer.If displayed value departs from normal range, represent that then the displacement transducer body is unusual, the diode alarm lamp can send warning.But the displacement transducer that has has only direct extension line, there are not six adapters, at this moment just change-over switch K2 need be got to J2 and make the output terminal of DC boosting unit 11 and the current input terminal and 161 conductings of electricity folder of current detecting unit 12, connect displacement transducer by electricity folder 161.
During on-line testing, can in motor room, take off two terminals of the signal wire of transmission displacement transducer electric current, be connected on the two ends of electricity folder 161, then change-over switch K2 be switched to J2, just can directly read current value.The method can also be tested the current value of displacement transducer at the connection terminal place of a plurality of centres, and is very convenient.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating purpose of the present invention, and be not as limitation of the invention, as long as in essential scope of the present invention, all will drop in the scope of claim of the present invention variation, the modification of the above embodiment.
Claims (5)
1. the current sensing means of a displacement transducer is characterized in that, comprising:
The DC boosting unit, its input end is connected with the supplying cell that is provided with power switch;
Current detecting unit, its power input is connected with the output terminal of DC boosting unit, receives the voltage through boosting;
Detection tabs comprises power interface and testing current interface, and power interface is connected with the output terminal of DC boosting unit; The testing current interface is connected with the current input terminal of current detecting unit, constitutes test loop with tested displacement transducer and receives the current signal of displacement transducer;
Display unit, its input end is connected with the output terminal of current detecting unit, the A/D switching signal of received current detecting unit output.
2. current sensing means as claimed in claim 1 is characterized in that:
Described current sensing means also comprises commutation circuit, commutation circuit comprises the two groups of change-over switches switched synchronously and electricity folder, one end of one group of change-over switch is connected with the output terminal of DC boosting unit, and the other end switches between the power interface of the power interface of detection tabs and electricity folder; End of another group change-over switch is connected with the current input terminal of current detecting unit, and the other end switches between the testing current interface of detection tabs and the electric testing current interface that presss from both sides.
3. current sensing means as claimed in claim 2 is characterized in that,
Described current detecting unit comprises:
Reduction voltage circuit, its input end is connected with the output terminal of DC boosting unit;
Preposition shaping circuit, its input end be connected with the testing current interface of detection tabs or with electricity folder the testing current interface is connected the current signal of reception displacement transducer;
Single-chip microcomputer, its input end link to each other with the output terminal of reduction voltage circuit and the output terminal of preposition shaping circuit respectively, receive the current test signal through shaping, and its output terminal is connected with the input end of display unit.
4. current sensing means as claimed in claim 1 is characterized in that,
Described DC boosting unit comprises:
Integrated chip, its input end is connected with supplying cell;
Filter regulator circuit, its input end is connected with the output terminal of integrated chip, produces the voltage through boosting.
5. current sensing means as claimed in claim 1 is characterized in that,
Described display unit comprises seven segment code pipe and status indicator lamp, and the input end of seven segment code pipe and status indicator lamp links to each other with the output terminal of single-chip microcomputer respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202140218U CN201576045U (en) | 2009-11-20 | 2009-11-20 | Current detecting device of displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202140218U CN201576045U (en) | 2009-11-20 | 2009-11-20 | Current detecting device of displacement sensor |
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| Publication Number | Publication Date |
|---|---|
| CN201576045U true CN201576045U (en) | 2010-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202140218U Expired - Fee Related CN201576045U (en) | 2009-11-20 | 2009-11-20 | Current detecting device of displacement sensor |
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| CN (1) | CN201576045U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405214A (en) * | 2016-08-18 | 2017-02-15 | 中国航空工业集团公司上海航空测控技术研究所 | Detection device of piezoelectric sensor |
| CN109163648A (en) * | 2018-08-24 | 2019-01-08 | 中国飞机强度研究所 | Displacement measurement fault detection method and device |
| CN112486052A (en) * | 2020-10-15 | 2021-03-12 | 中车青岛四方机车车辆股份有限公司 | Bogie real-time sensor intelligent detection electrical control system |
-
2009
- 2009-11-20 CN CN2009202140218U patent/CN201576045U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405214A (en) * | 2016-08-18 | 2017-02-15 | 中国航空工业集团公司上海航空测控技术研究所 | Detection device of piezoelectric sensor |
| CN106405214B (en) * | 2016-08-18 | 2019-04-05 | 中国航空工业集团公司上海航空测控技术研究所 | A kind of piezoelectric transducer detection device |
| CN109163648A (en) * | 2018-08-24 | 2019-01-08 | 中国飞机强度研究所 | Displacement measurement fault detection method and device |
| CN112486052A (en) * | 2020-10-15 | 2021-03-12 | 中车青岛四方机车车辆股份有限公司 | Bogie real-time sensor intelligent detection electrical control system |
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| 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: 20100908 Termination date: 20161120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |