CN104006782A - Dynamic detection device for position sensor sensing section - Google Patents
Dynamic detection device for position sensor sensing section Download PDFInfo
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- CN104006782A CN104006782A CN201410259606.7A CN201410259606A CN104006782A CN 104006782 A CN104006782 A CN 104006782A CN 201410259606 A CN201410259606 A CN 201410259606A CN 104006782 A CN104006782 A CN 104006782A
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Abstract
The invention discloses a dynamic detection device for a position sensor sensing section. The dynamic detection device comprises a sensor installation platform, a detected object rotating device, a PLC monitoring module and an upper computer. The sensor installation platform is of a frame structure provided with a common sensor installation hole, and a position sensor is installed in the common sensor installation hole. The detected object rotating device is arranged on the opposite face of the sensor installation platform and located within the range of the position sensor sensing section, a speed-adjustable motor is installed at the bottom of the detected object rotating device, the detected object rotating device can be driven by the adjustable motor to rotate around the axis, and a detected object is installed on the detected object rotating device. The PLC monitoring module is connected with a sensor signal line, and the upper computer is connected with the PLC monitoring module through a communication line and used for monitoring the operation condition of the sensor. Through colleting the triggering period of the sensor, the range of the sensing section is calculated, and the changes of the sensor sensing section can be detected in a high-precision mode.
Description
Technical field
The present invention relates to wind electricity change paddle apart from control system blade angle detection device, relate in particular to the device for dynamically detecting between a kind of position transducer induction zone.
Background technology
Along with the further popularization of clean energy resource, wind power generating set more and more comes into operation.Variable-pitch control system is the important device of the above wind power generating set control and protection of MW class, is the service brake system of fan parking.For the accuracy of confirming that variable-pitch control system is controlled blade angle, the mode that most manufacturers adopt motor encoder to be combined with position transducer, the real-time angle value of feedback blade, the position at calibration blade place.
Sum up above-mentioned functions, wind power pitch-controlled system is equipped with position transducer in blade inside, and between the induction zone of this sensor, before blower fan is incorporated into the power networks, the form with angular interval is preserved.When blower fan master control requires to rotate blade to given position process, position transducer is because the process of detected material is triggered, now, pitch-controlled system, by check code device position feedback and position transducer trigger pip, judges whether actual blade angle occurs deviation.Due to position transducer type selecting and before dispatching from the factory, need through sampling Detection, therefore need to design a set of special device for dynamically detecting and substitute actual blade operation.There is sensor producer to design the pick-up unit of sensor sensing distance, but cannot detect the variation in sensor sensing interval in dynamic running process.
Summary of the invention
For the actual motion effect of detection position sensor under above-mentioned special operation condition, what the present invention proposed triggers testing scheme big or small between computation of Period induction zone, the variation between detecting sensor induction zone accurately by pick-up transducers.
The present invention is by the following technical solutions:
A device for dynamically detecting between position transducer induction zone, comprises sensor installing platform, detected material whirligig, PLC monitoring module and host computer, it is characterized in that:
Described sensor installing platform is the framed structure with general purpose transducer mounting hole, and position transducer is arranged in described general purpose transducer mounting hole;
Described detected material whirligig is arranged in described sensor installing platform opposite face and the induction interval range in described position transducer, described detected material whirligig bottom is provided with speed adjustable motor, by adjustable motor, drive described detected material whirligig to rotate around axle center, on described detected material whirligig, detected material is installed;
Described PLC monitoring module is connected with sensor signal lines;
Described host computer is connected with PLC monitoring module by connection, monitoring sensor ruuning situation.
The present invention is preferred following scheme further:
Described sensor installing platform is a rectangular parallelepiped framework, arranges a plurality of according to the general purpose transducer mounting hole of circumferential arrangement on this rectangular parallelepiped framework; Described detected material whirligig is a disc mounting bracket, on this discoid mounting bracket a plurality of detected materials to be installed with respect to center of circle symmetric position; Described detected material whirligig rotating speed is adjustable continuously, and maximum (top) speed to 20 degree is per second.
PLC monitoring module continues the triggering cycle and is not triggered the cycle continuously according to sensor, in conjunction with rotation platform rotating speed, and actual sensed angular dimension in calculating sensor dynamic process.
For particular sensor, select specific detected material, guarantee test self-consistentency, if occur, sensor does not detect the situation of detected material, and PLC monitoring module will send alerting signal as prompting.
In initialization procedure, in PLC monitoring module, will preserve the interval size of original state lower sensor location sensitive, and corresponding numerical value will be deposited in database; After entering actual test phase, sensor is each trigger between the induction zone obtaining will and initialization induction zone between compare in real time, and probability of occurrence mxm. and maximum deflection difference value are shown in host computer.The interval maximum allowable offset of sensor sensing can be set at initialization interface, if maximum deviation measured value is greater than setting value, in host computer, can prompting report to the police, and records generation maximum deviation environment temperature constantly.
The present invention uses the CX9000 of Bei Fu company series CPU, and expansion variable input and output fastener and analog input fastener are as PLC monitoring module.Required detecting sensor can correspondence be installed on sensor installing platform, the detected material that uses can correspondence be installed on detected material whirligig.Can adjusting rotating device rotating speed according to actual blade travelling speed.This covering device records and preserve each sensor to be continued the triggered time and not to be triggered the time continuously, according to whirligig rotating speed, and size between conversion respective sensor induction zone.
During due to design, consider the existence that detects error, so in testing process, use particular sensor to select the mode of specific detected material, realize one to one and detecting, and PLC collection period is contracted to 5ms, limit the highest rotation rotating speed is 10 °/s simultaneously.
In order to facilitate testing staff to control in real time observation, the invention provides simple and easy close friend's man-machine interface in addition.Arbitrarily computer can pass through IE browser access interface, and between each detected sensor initializing induction zone, in actual testing process, maximum deviation can be read from interface between induction zone and between induction zone.Meanwhile, the external PT100 of PLC monitoring module, records and shows environment temperature corresponding when sensor maximum deviation produces.
The present invention has following useful technique effect:
The present invention can detecting sensor at specific detected material and specific environment temperature, situation of change between the induction zone in dynamic running process.
Accompanying drawing explanation
Fig. 1 is the device for dynamically detecting structured flowchart between position transducer of the present invention induction zone;
Fig. 2 is operational effect schematic diagram of the present invention;
Fig. 3 is detection schematic diagram data of the present invention;
Fig. 4 is detection logical flow chart of the present invention.
Embodiment
Below in conjunction with Figure of description, technical scheme of the present invention is described in further detail.
As shown in Figure 1, apply the device for dynamically detecting between position transducer of the present invention induction zone, comprise sensor installing platform 1, detected material whirligig 2, PLC monitoring module 3 and host computer 4; Sensor mounting platform 1 and the 2 concentric fixed installations of detected material whirligig; Sensor to be detected can be mounted on sensor installing platform 1, and detected material can be fixed on detected material whirligig 2; Regulate detected material whirligig 2 interior motor speeds, can change the velocity of rotation of the relative sensor of detected material; Sensor-triggered signal is connected with PLC monitoring module 3 by sensor signal lines; The interval concrete data message of sensor sensing is uploaded to host computer by connection and monitors for testing staff.
As shown in Figure 2, during detected material process sensor, sensor is triggered, and has the lasting trigger pip of a period of time; When detected material leaves after sensor, trigger pip disappears.When environment temperature changes, corresponding changing between the induction zone of sensor.
As shown in Figure 3, for guaranteeing to detect consistance, set rotation platform invariablenes turning speed, T
1for normal temperature lower sensor continues the triggered time, T
3for normal temperature lower sensor is not triggered the time continuously; T
2for low temperature lower sensor continues the triggered time, T
4for low temperature lower sensor is not triggered the time continuously.Sensor is triggered in process at every turn, and PLC monitoring module all can record automatically preserves above data, calculates and compares to obtain the time Δ t that deviates
1with Δ t
2value.
Described PLC monitoring module can be stored in the above data of surveying in internal database, automatically selects deviation time Δ t
1with Δ t
2middle maximal value, by producing the maximum deviation environment temperature of moment, maximum deviation time, sensor continues the triggered time and the time of not being triggered is uploaded to host computer continuously, PLC monitoring module can, according to current rotation platform rotating speed, calculate size between corresponding induction zone simultaneously.
Described host computer can show related parameter values when the real-time detected value of sensor and maximum deviation produce.According to accuracy of detection needs, can in interface, directly define maximum deviation amount.When actual deviation is greater than setting value, system will record and produce number of times and temperature at that time.
As shown in Figure 4, whole system can enter wait initial phase after powering on, and personnel to be tested are ready, can be hit and be entered initial phase by interface flow process button point.Enter after initial phase, whether system can detect each sensor and can be triggered, and after judgement initialization success, system enters actual detection-phase.
After entering actual detection-phase, PLC monitoring module is preserved actual triggering periodicity, the periodicity that is not triggered continuously of continuing of sensor by record, compare in real time the deviation between measured value and initialization value, extract uploading data Ku Zhong sensor sensing district's probability of occurrence mxm. and deviation maximal value.
In database, be retained as right lasting triggering periodicity and the periodicity that is not triggered continuously, in order to check the reliability of data acquisition in actual testing process.
Applicant has done detailed explanation and description in conjunction with Figure of description to embodiments of the invention; but those skilled in the art should understand that; above embodiment is only the preferred embodiments of the invention; detailed explanation is just in order to help reader to understand better spirit of the present invention; and be not limiting the scope of the invention; on the contrary, within any any improvement of doing based on invention spirit of the present invention or modification all should drop on protection scope of the present invention.
Claims (5)
1. the device for dynamically detecting between position transducer induction zone, comprises sensor installing platform, detected material whirligig, PLC monitoring module and host computer, it is characterized in that:
Described sensor installing platform is the framed structure with general purpose transducer mounting hole, and position transducer is arranged on to described general purpose transducer mounting hole;
Described detected material whirligig is arranged in described sensor installing platform opposite face and the induction interval range in described position transducer, described detected material whirligig bottom is provided with speed adjustable motor, by adjustable motor, drive described detected material whirligig to rotate around axle center, on described detected material whirligig, detected material is installed;
Described PLC monitoring module is connected with sensor signal lines;
Described host computer is connected with PLC monitoring module by connection, monitoring sensor ruuning situation.
2. the device for dynamically detecting in sensor sensing according to claim 1 interval, is characterized in that:
Described sensor installing platform is a rectangular parallelepiped framework, arranges a plurality of according to the general purpose transducer mounting hole of circumferential arrangement on this rectangular parallelepiped framework;
Described detected material whirligig is a disc mounting bracket, on this discoid mounting bracket a plurality of detected materials to be installed with respect to center of circle symmetric position;
Described detected material whirligig rotating speed is adjustable continuously, and maximum (top) speed to 20 degree is per second.
3. the device for dynamically detecting in sensor sensing according to claim 1 and 2 interval, is characterized in that:
PLC monitoring module continues the triggering cycle and is not triggered the cycle continuously according to sensor, in conjunction with rotation platform rotating speed, and actual sensed angular dimension in calculating sensor dynamic process.
4. the device for dynamically detecting in sensor sensing according to claim 1 and 2 interval, it is characterized in that: for particular sensor, select specific detected material, guarantee test self-consistentency, if occur, sensor does not detect the situation of detected material, and PLC monitoring module will send alerting signal as prompting.
5. the device for dynamically detecting in sensor sensing according to claim 1 and 2 interval, is characterized in that:
In initialization procedure, in PLC monitoring module, will preserve the interval size of original state lower sensor location sensitive, and corresponding numerical value will be deposited in database;
After entering actual test phase, sensor is each trigger between the induction zone obtaining will and initialization induction zone between compare in real time, and probability of occurrence mxm. and maximum deflection difference value are shown in host computer.
The interval maximum allowable offset of sensor sensing can be set at initialization interface, if maximum deviation measured value is greater than setting value, in host computer, can prompting report to the police, and records generation maximum deviation environment temperature constantly.
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| CN109479359A (en) * | 2016-07-04 | 2019-03-15 | 飞利浦照明控股有限公司 | For providing the system and method for the access to sensing data for equipment |
| CN110109008A (en) * | 2019-04-19 | 2019-08-09 | 湖北三江航天万峰科技发展有限公司 | It is a kind of close to inductive switching range test device and method |
| CN113567784A (en) * | 2021-07-22 | 2021-10-29 | 支红抗 | Electronic lock detection device |
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| CN113567784B (en) * | 2021-07-22 | 2024-04-26 | 支红抗 | Electronic lock detection device |
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| CN104006782B (en) | 2017-02-15 |
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Effective date of registration: 20170320 Address after: 065500 Guan Industrial Park, Hebei, Langfang Patentee after: GU'AN HUADIAN TIANREN CONTROL EQUIPMENT CO., LTD. Address before: 100039 Beijing West Fourth Ring Road, No. 16, building No. 1, Haidian District Patentee before: Beijing Huadian Tianren Electric Power Technology Co., Ltd. |
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Address after: 065500 Industrial Park, Gu'an County, Langfang City, Hebei Province Patentee after: Guoneng information technology (Hebei) Co.,Ltd. Address before: 065500 North District of Gu'an Industrial Park, Langfang City, Hebei Province Patentee before: GU'AN HUADIAN TIANREN CONTROL EQUIPMENT Co.,Ltd. |