CN102706457A - Infrared temperature measuring device based on ultrasound ranging temperature compensation - Google Patents
Infrared temperature measuring device based on ultrasound ranging temperature compensation Download PDFInfo
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- CN102706457A CN102706457A CN2012101638063A CN201210163806A CN102706457A CN 102706457 A CN102706457 A CN 102706457A CN 2012101638063 A CN2012101638063 A CN 2012101638063A CN 201210163806 A CN201210163806 A CN 201210163806A CN 102706457 A CN102706457 A CN 102706457A
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Abstract
The invention relates to an infrared temperature measuring device based on the ultrasound ranging temperature compensation. Stepping motors in horizontal direction and vertical direction, an infrared temperature measuring unit, an ultrasound ranging module, a laser indicator and a positioning switch are arranged on a holder mechanical structure; the holder mechanical structure is connected with a calibrating module through the laser indicator and a control module; a calibrated parameter storing module, a control system and calibrating module, a system positioning interface circuit and the ultrasound ranging module are respectively connected with a central processing unit (CPU); the infrared temperature measuring unit sends the detected temperature value signal to the CPU, CPU sends the value signal to an upper computer through a wireless communication interface module. The infrared temperature measuring device can perform non-contact online temperature measurement on the to-be-tested points distributed at every position of the space; the infrared temperature measuring device is high in precision and quick in measuring speed; the structure design is reasonable, the infrared thermometer and the accurate positioning technology are combined, therefore, the online monitoring of multi-point temperature of the space is realized, and the cost is saved.
Description
Technical field
The present invention relates to the infrared temperature measurement apparatus in a kind of power equipment, be specifically related to the infrared temperature measurement apparatus of the online supersonic sounding temperature compensation of a kind of noncontact.
Background technology
Temperature is the physical quantity of expression interior of articles molecular motion severe, is one of important parameter of confirming the object state of matter.In electric system, most of electrical equipments all operate under the state of high-voltage large current, and in numerous power outages, maintenance is frequent to be taken place owing to the equipment local overheating causes power failure.The safe operation that this has not only influenced equipment has threatened public safety, and has brought great economic loss for power consumption side.If can accident take place early stage, carry out early warning in advance and take measures rapidly, can avoid the generation of this type of accident effectively.Thereby in time the various tie points of high voltage alive equipment to be carried out on-line temperature monitoring be the important leverage of electric power netting safe running with control.
At present; Thermometric for high voltage alive equipment; A kind of method commonly used is that each electrical network is still inferred the contact point temperature with the wax disk(-sc) of the variable color with temperature variation according to wax disk(-sc) change color and thawing degree in the subsides on the measured point of continuing to use, and this method mainly relies on people's sense organ consciousness and practical experience simply to judge; Accuracy is low, can not monitor in real time; Another kind is that thermistor is constituted temperature sensor as temperature element, this temp measuring method wax disk(-sc) of comparing, precision increases, but complex installation process need install in the place of each thermometric, can not carry out on-line monitoring.
Summary of the invention
The present invention will provide a kind of infrared temperature measurement apparatus based on the supersonic sounding temperature compensation, and this device can not only solve the technical matters of real-time monitoring, and in the infrared measurement of temperature process; There is error this problem to tested point in the accuracy of infrared thermometer apart from distance with temperature measurer, adopts the online distance that obtains testee to infrared thermometer of supersonic sounding technology, according to the on-line measurement result; The temperature value that temperature measurer is recorded compensates or revises; Eliminate the additive error that the thermometric distance is brought, improve thermometric accuracy, infrared thermometer is combined with placement technology; Implementation space multi-point temp on-line monitoring has been practiced thrift cost.
Technical scheme of the present invention is: a kind of infrared temperature measurement apparatus based on the supersonic sounding temperature compensation; Comprise CPU, horizontal direction and vertical direction stepper motor, infrared measurement of temperature unit, supersonic sounding module, wireless communication interface, calibration parameter memory module, control system and calibration module, system's locating interface circuit; The Cloud Terrace physical construction; Be characterized in: horizontal direction and vertical direction stepper motor, infrared measurement of temperature unit, supersonic sounding module, laser designator are housed above the The Cloud Terrace physical construction; Positioning switch; The Cloud Terrace physical construction is connected with calibration module with control system through laser designator; Be used under the indication of visible laser, through control system and calibration module controlling level motor driver with the motor vertical driver drives horizontal direction respectively and the vertical direction stepper motor carries out space orientation to the measured point, and store the locus of measured point in the calibration parameter memory module into; Calibration parameter memory module, control system are connected with CPU respectively with the supersonic sounding module with calibration module, system's locating interface circuit; Be used for system's locating interface circuit and position search according to the locus coordinate of measured point; And record the measured point to the distance value of infrared thermometer according to the supersonic sounding module; The temperature value that records is compensated and revises; Eliminate the additive error that the thermometric distance is brought, the infrared measurement of temperature unit is sent to CPU with the temperature value signal that records, and CPU is sent to host computer through Wireless communication interface module again.
The Cloud Terrace physical construction comprises alignment bearing, rolling bearing, annular backing plate, upper and lower base, side plate, bracing frame, binding, fastening card; Connect alignment bearing, rolling bearing and annular backing plate between the upper and lower base from bottom to up successively, the horizontal direction stepper motor is housed above the upper bed-plate; The horizontal direction stepper motor is fixedly connected with upper bed-plate with annular backing plate through the stepper motor securing member; Both sides are fixedly connected side plate respectively above the upper bed-plate; Be fixedly connected the vertical direction stepper motor on the lateral surface of side plate upper end, be connected with bracing frame between two side plate upper ends, the bracing frame both sides are connected with the rotating shaft of vertical direction stepper motor respectively; Pass through the infrared thermometer that binding is fixedly connected the infrared measurement of temperature unit in the middle of above the bracing frame; The supersonic sounding module is equipped with on the next door, with the fastening connection laser designator that fastens, on bracing frame side plate and the upper bed-plate side positioning switch is housed respectively above the infrared thermometer.
Positioning switch is the bimetallic strip positioning switch, and the centre is provided with insulation course, both sides metal clad sheet.
Stepper motor is that step angle is 7.5 ° a stepper motor, reduction gear ratio 1/120, and 1/4 subdivision driver is housed.
The invention has the beneficial effects as follows: the present invention adopts the Non-contact and On-line thermometric, and adopts the The Cloud Terrace physical construction by step motor control, has guaranteed the security and the convenience of operation; The stepper motor, binary search technology, the supersonic sounding that adopt reduction gear ratio to combine with the segmentation actuation techniques are technological, have shortened Measuring Time when improving precision again; Infrared thermometer is combined with placement technology, and implementation space multi-point temp on-line monitoring has been practiced thrift cost.
Description of drawings
Fig. 1 is a control structure block diagram of the present invention;
Fig. 2 is a The Cloud Terrace physical construction schematic perspective view;
Fig. 3 is the exploded view of The Cloud Terrace physical construction;
Fig. 4 is a positioning switch structure cut-open view.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Extremely shown in Figure 3 like Fig. 1; Infrared temperature measurement apparatus based on the supersonic sounding temperature compensation of the present invention; Comprise CPU, horizontal direction and vertical direction stepper motor 8; 16, infrared measurement of temperature unit, supersonic sounding module, wireless communication interface, calibration parameter memory module, control system and calibration module, system's locating interface circuit, The Cloud Terrace physical construction etc.
Horizontal direction and vertical direction stepper motor 8 are housed above the The Cloud Terrace physical construction; 16, infrared measurement of temperature unit, supersonic sounding module, laser designator 12; Positioning switch 9; The Cloud Terrace physical construction is connected with calibration module with control system through laser designator 12; Be used under the indication of visible laser, through control system and calibration module controlling level motor driver with the motor vertical driver drives horizontal direction respectively and the vertical direction stepper motor carries out space orientation to the measured point, and store the locus of measured point in the calibration parameter memory module into; Calibration parameter memory module, control system are connected with CPU respectively with the supersonic sounding module with calibration module, system's locating interface circuit; Be used for system's locating interface circuit and position search according to the locus coordinate of measured point; And record the measured point to the distance value of infrared thermometer according to the supersonic sounding module; The temperature value that records is compensated and revises; Eliminate the additive error that the thermometric distance is brought, the infrared measurement of temperature unit is sent to CPU with the temperature value signal that records through the RS-232 communication mode, and CPU is sent to host computer through Wireless communication interface module again.
Like Fig. 2; Shown in 3; The Cloud Terrace physical construction comprises alignment bearing 2, rolling bearing 3, annular backing plate 4, upper and lower base 5,1, side plate 6, bracing frame 7, binding 11, fastening card 13, upper and lower base 5; Connect alignment bearing 2, rolling bearing 3 and annular backing plate 4 between 1 from bottom to up successively, horizontal direction stepper motor 8 is housed above the upper bed-plate 5; Horizontal direction stepper motor 8 is fixedly connected with upper bed-plate 5 with annular backing plate 4 through stepper motor securing member 15, and both sides are fixedly connected side plate 6 respectively above the upper bed-plate 5, is fixedly connected vertical direction stepper motor 16 on the side plate 6 upper end lateral surfaces; Be connected with bracing frame 7 between two side plate 6 upper ends; Bracing frame 7 both sides are connected with the rotating shaft of vertical direction stepper motor 16 respectively, middle infrared thermometer 10 above the bracing frame 7 through binding 11 fixed connection infrared measurement of temperature unit, and supersonic sounding module 14 is equipped with on the next door; Be fixedly connected laser designator 12 with fastening card 13 above the infrared thermometer 10, on bracing frame 7 side plates and upper bed-plate 5 sides positioning switch 9 be housed respectively.
Because the sliding action of rolling bearing 3; The bracing frame 7 that stepper motor 8 may command upper bed-plates 5 on the upper bed-plate 5 rotate in the horizontal direction, infrared thermometer 10 is equipped with in 8 controls of the stepper motor on the side plate 6 rotates in vertical direction; Thereby realize that bracing frame 7 rotates in the space; Infrared thermometer 10, laser designator 12, supersonic sounding module 14 are installed on the bracing frame 7, can be implemented in the space object under test is carried out thermometric.Horizontal direction and vertical direction stepper motor 8,16 are 7.5 ° stepper motor for step angle, reduction gear ratio 1/120, and 1/4 subdivision driver is housed.
As shown in Figure 4, positioning switch 9 is the bimetallic strip positioning switch, and the centre is provided with insulation course, both sides metal clad sheet.
Practical implementation of the present invention: at first build The Cloud Terrace physical construction, under the indication of visible laser, space orientation is carried out in the measured point through calibration plate controlling level motor driver and motor vertical driver; Store the locus of measured point in the calibration parameter memory module into, system control cpu locating interface circuit carries out the fixed-position searching in a week according to the coordinate of these points; In search procedure; The utilization placement technology is accurately located, and records the distance that a little arrives infrared thermometer according to the supersonic sounding technology, and is far and near according to distance; The temperature value that records is compensated and self calibration; After search was accomplished, the infrared measurement of temperature unit was sent to CPU with temperature value through the RS-232 communication mode, and CPU is sent to host computer through Wireless communication interface module again; After process finishes, can calibrate the system location through control system and calibration module.
The present invention selects the stepper motor of band reduction gear ratio for use when the selection of stepper motor, utilization segmentation actuation techniques improves measuring accuracy; In the present invention, the employing step angle is 7.5 ° a stepper motor, reduction gear ratio 1/120, and adopt 1/4 subdivision driver; Then precision can reach 0.015 °, if survey 8m object under test at a distance, whenever gives a pulse; The radian of temperature measurer rotation 2mm, accurate positioning, error is little; Adopt online the obtaining of supersonic sounding technology
Get the distance of testee to infrared thermometer, according to the on-line measurement result, the temperature value that temperature measurer is recorded compensates or revises, and eliminates the additive error that the thermometric distance is brought, and improves thermometric accuracy; In the process of fixed-position searching, adopt the binary search technology, promptly make stepper motor fast turn-around to object under test earlier; Control subdivision driver with CPU then, increase the segmentation number, further improve bearing accuracy; In small spatial dimension, repeatedly measure the temperature of testee; And search tries to achieve maximum temperature value, promptly as the temperature of tested point, and the thermometric accuracy that improves system; System adopts the bimetallic strip positioning switch, and when system reset, rotating mechanism drives the Metallic rod of L type and moves to reference position; Sheet metal when the last switch both sides of Metallic rod contact, switch closure, control system stops motor and is rotated further; Be designated as the starting point that system rotates this moment; This particular structural has been eliminated the journey error that switch commonly used brings, and the repetition performance of system reset is good, improves the bearing accuracy of system.
The present invention can carry out the noncontact temperature measurement on-line to the tested point that is distributed in each position, space, and degree of accuracy is high, and measuring speed is fast; Reasonable in design combines infrared thermometer with placement technology, implementation space multi-point temp on-line monitoring has been practiced thrift cost.
Claims (4)
1. infrared temperature measurement apparatus based on the supersonic sounding temperature compensation; Comprise CPU, horizontal direction and vertical direction stepper motor (8; 16), infrared measurement of temperature unit, supersonic sounding module, wireless communication interface, calibration parameter memory module, control system and calibration module, system's locating interface circuit and The Cloud Terrace physical construction; It is characterized in that: the stepper motor (8 that is used for horizontal direction and vertical direction adjustment is housed respectively above the said The Cloud Terrace physical construction; 16), infrared measurement of temperature unit, supersonic sounding module, laser designator (12) and positioning switch (9); Said The Cloud Terrace physical construction is connected with calibration module with control system through laser designator (12), is used under the indication of visible laser, drives horizontal direction and vertical direction stepper motor (8 respectively through control system and calibration module controlling level motor driver and motor vertical driver; 16) space orientation is carried out in the measured point, and store the locus of measured point in the calibration parameter memory module into; Said calibration parameter memory module, control system are connected with CPU respectively with the supersonic sounding module with calibration module, system's locating interface circuit; Be used for system's locating interface circuit and position search according to the locus coordinate of measured point; And record the measured point to the distance value of infrared thermometer according to the supersonic sounding module; The temperature value that records is compensated and revises; Eliminate the additive error that the thermometric distance is brought, the infrared measurement of temperature unit is sent to CPU with the temperature value signal that records, and CPU is sent to host computer through Wireless communication interface module again.
2. the infrared temperature measurement apparatus based on the supersonic sounding temperature compensation according to claim 1; It is characterized in that: said The Cloud Terrace physical construction comprises alignment bearing (2), rolling bearing (3), annular backing plate (4), upper and lower base (5; 1), side plate (6), bracing frame (7), binding (11), fastening card (13); Said upper and lower base (5; 1) connects alignment bearing (2), rolling bearing (3) and annular backing plate (4) between from bottom to up successively, vertical direction stepper motor (15) is housed above the upper bed-plate (5); Horizontal direction stepper motor (8) is fixedly connected with upper bed-plate (5) with annular backing plate (4) through stepper motor securing member (15); Both sides are fixedly connected side plate (6) respectively above the upper bed-plate (5); Be fixedly connected vertical direction stepper motor (8) on the lateral surface of side plate (6) upper end, two side plates (6) are connected with bracing frame (7) between the upper end, and bracing frame (7) both sides are connected with the rotating shaft of vertical direction stepper motor (16) respectively; Pass through the infrared thermometer (10) that binding (11) is fixedly connected the infrared measurement of temperature unit in the middle of above the bracing frame (7); Supersonic sounding module (14) is equipped with on the next door, is fixedly connected laser designator (12) with fastening card (13) above the infrared thermometer (10), on bracing frame (7) side plate and upper bed-plate (5) side positioning switch (9) is housed respectively.
3. the infrared temperature measurement apparatus based on the supersonic sounding temperature compensation according to claim 1 is characterized in that: said positioning switch (9) is the bimetallic strip positioning switch, and the centre is provided with insulation course (20), both sides metal clad sheets (21).
4. the infrared temperature measurement apparatus based on the supersonic sounding temperature compensation according to claim 1; It is characterized in that: said horizontal direction and vertical direction stepper motor (8; 16) for step angle be 7.5 ° stepper motor, reduction gear ratio 1/120, and 1/4 subdivision driver is housed.
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| CN102967373A (en) * | 2012-11-09 | 2013-03-13 | 广东电网公司东莞供电局 | Three-dimensional (3D) infrared temperature monitoring method and system for substation |
| CN104634456A (en) * | 2015-02-25 | 2015-05-20 | 上海电力学院 | Method for automatically calibrating scanning type infrared temperature measuring system deviating from preset monitoring point |
| CN105487569A (en) * | 2016-01-25 | 2016-04-13 | 陈佳伟 | Temperature control system based on acoustic temperature measurement |
| CN105509899A (en) * | 2016-01-26 | 2016-04-20 | 云南电网有限责任公司电力科学研究院 | Method and system for infrared image temperature measurement calibration |
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