CN204166410U - A kind of constant temperature measurement platform - Google Patents
A kind of constant temperature measurement platform Download PDFInfo
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- CN204166410U CN204166410U CN201420648844.2U CN201420648844U CN204166410U CN 204166410 U CN204166410 U CN 204166410U CN 201420648844 U CN201420648844 U CN 201420648844U CN 204166410 U CN204166410 U CN 204166410U
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Abstract
The utility model discloses a kind of constant temperature measurement platform, comprise refrigeration platform, semiconductor cooler, heat radiator, power switch, refrigerating fan, air channel and temperature control system, described temperature control system comprises single-chip microcomputer, temperature sensor and charactron, and described refrigeration platform is made up of level table and the column be arranged on below level table; Described semiconductor cooler is positioned at the below of the level table of described refrigeration platform; Described power switch is by the below of Bracket setting at the level table of described refrigeration platform; Described refrigerating fan is arranged on the right side of the column of described refrigeration platform, and is positioned at the below of the level table of described refrigeration platform; Between the lower surface that described single-chip microcomputer is arranged on the level table of described refrigeration platform and the upper surface of described refrigerating fan.Constant temperature measurement platform of the present utility model solves the problem of measurer isothermal overlong time in precision measurement such as clamp, improves the ability of detection efficiency and Site Detection.
Description
Technical field
The utility model belongs to surveying instrument and manufactures field, is specifically related to a kind of constant temperature measurement platform, is applied to the precision measurement of the measurers such as clamp.
Background technology
The self-control measurer that instrument subsidiary factory manufactures mainly contains cylindrical clamp, inner circle clamp, width clamp, seam clamp, trapezoidal clamp and feeler gauge etc., be distributed in the large classes of frock such as 810 to 815,826,829,867, clamp is after grinding, need to send into metering section to check size and tolerance, require during measurement that clamp and measuring instrument isothermal are to 20 ± 2 DEG C (high-precision needs 20 ± 0.5 DEG C), but due to factory environment temperature and add the reason such as heat produced man-hour, the clamp of general censorship all has difference with the temperature required.If directly measured, due to the expansion coefficient of material, larger error can be brought to measurement.So clamp will be placed on a period of time in constant temperature traditionally, isothermal is measured to about 20 DEG C again, but just need like this to wait for long time, sometimes larger clamp needs more than 24 hours.After measurement, the clamp not meeting dimensional requirement also will send workshop grind and revise, again although the correction time is very short, but repeat isothermal process, detect back and forth and revise several times, having had a strong impact on the delivery date of clamp, therefore needing badly and solve the long problem of isothermal time.
Why will isothermal time reach several even tens hours? through field investigation, originally relevant with the method for isothermal.Present way is, clamp is placed in natural heating and cooling on flat board or worktable.When clamp temperature is higher than 20 DEG C, heat in clamp produces heat transfer by lower surface with dull and stereotyped contact, flat board produces heat radiation with air again and conducts, clamp upper surface then directly and air produce heat radiation and conduct, air levels in last constant temperature because there is the temperature difference to produce convection current, then produces heat transfer with central air conditioner and is discharged by heat; When clamp is lower than 20 DEG C, conversely, the heat conduction of air-conditioning is to clamp for process.
But no matter heating up or lower the temperature, all will carry out heat conduction by air, can air but be the bad medium of thermal conductivity, As time goes on, clamp and measure the dull and stereotyped temperature difference and reduce gradually, close in the final stage process of 20 DEG C, needs the time grown very much.Therefore, the main cause that isothermal time is long is exactly have this link of air in heat conducting process.
Summary of the invention
The purpose of this utility model is the defect overcoming prior art, a kind of constant temperature measurement platform is provided, substantially increase efficiency and the stability of isothermal, solve the problem of measurer isothermal overlong time in precision measurement such as clamp, improve the ability of detection efficiency and Site Detection.
The technical scheme realizing above-mentioned purpose is: a kind of constant temperature measurement platform, comprise refrigeration platform, semiconductor cooler, heat radiator, power switch, refrigerating fan, air channel and temperature control system, described temperature control system comprises single-chip microcomputer, temperature sensor and charactron, wherein:
The material of described refrigeration platform is aluminium, and described refrigeration platform is made up of level table and the column be arranged on below level table, T-shaped structure, and level table and the column of described refrigeration platform are one-body molded;
Described semiconductor cooler is positioned at the below of the level table of described refrigeration platform, one end of described semiconductor cooler fits in the left side of the column of described refrigeration platform, the other end of described semiconductor cooler fits in the side of described heat radiator, and the opposite side of described heat radiator is provided with radiator fan;
Described power switch is positioned at above described heat radiator by Bracket setting in the below of the level table of described refrigeration platform, and this power switch is electrically connected with described semiconductor cooler;
Described refrigerating fan is arranged on the right side of the column of described refrigeration platform, and is positioned at the below of the level table of described refrigeration platform;
Described air channel comprises vertically disposed left air channel, horizontally disposed upper air duct and vertically disposed right air channel, the bottom in described left air channel is connected with the left end of the level table of described refrigeration platform, the right-hand member of the top in described left air channel, the left end of described upper air duct, described upper air duct is connected successively with the top in described right air channel, and the bottom in described right air channel is connected with the air outlet of described refrigerating fan;
Between the lower surface that described single-chip microcomputer is arranged on the level table of described refrigeration platform and the upper surface of described refrigerating fan;
Described temperature sensor and charactron by support installing above the level table of described refrigeration platform.
In above-mentioned constant temperature measurement platform, described constant temperature measurement platform also comprises the rechargeable battery of the below of the level table being arranged on refrigeration platform, and described rechargeable battery is electrically connected with single-chip microcomputer.
In above-mentioned constant temperature measurement platform, described rechargeable battery is lithium battery.
In above-mentioned constant temperature measurement platform, described temperature sensor adopts laser temperature-measuring head.
In above-mentioned constant temperature measurement platform, between the binding face of the column of described semiconductor cooler and described refrigeration platform, be coated with one deck thermal conductive silicon glue-line;
One deck thermal conductive silicon glue-line is coated with between the binding face of described semiconductor cooler and described radiator fan.
In above-mentioned constant temperature measurement platform, described single-chip microcomputer is electrically connected with described semiconductor cooler by dpdt relay.
In above-mentioned constant temperature measurement platform, the left surface in described right air channel contacts with the right-hand member of the level table of described refrigeration platform.
In above-mentioned constant temperature measurement platform, described temperature sensor and charactron are electrically connected with described single-chip microcomputer respectively.
The technical scheme of constant temperature measurement platform of the present utility model, the pattern of traditional heat radiation and thermal convection isothermal is changed into the heat transfer of alumina based material, substantially increase the efficiency of heat conduction, semiconductor material add the Energy Efficiency Ratio and portability that improve constant temperature measurement platform, the closed-loop control of single-chip microcomputer and temperature sensor substantially increases efficiency and the stability of isothermal, compare traditional natural isothermal, the isothermal efficiency of constant temperature measurement platform will have the lifting of the order of magnitude, solve the problem of measurer isothermal overlong time in precision measurement such as clamp, improve the ability of detection efficiency and Site Detection.
Accompanying drawing explanation
Fig. 1 is the sectional view of constant temperature measurement platform of the present utility model.
Embodiment
In order to make those skilled in the art can understand the technical solution of the utility model better, below in conjunction with accompanying drawing, its embodiment is described in detail:
Consult Fig. 1, embodiment of the present utility model, a kind of constant temperature measurement platform, comprise refrigeration platform 1, semiconductor cooler 2, heat radiator 3, power switch 4, refrigerating fan 5, air channel 6 and temperature control system, temperature control system comprises single-chip microcomputer 71, temperature sensor 72 and charactron 73.
The material of refrigeration platform 1 is aluminium, and refrigeration platform 1 is made up of level table 11 and the column 12 be arranged on below level table, T-shaped structure, and level table 11 and the column 12 of refrigeration platform 1 are one-body molded.
Semiconductor cooler 2 is positioned at the below of the level table 11 of refrigeration platform 1, one end of semiconductor cooler 2 fits in the left side of the column 12 of refrigeration platform 1, the other end of semiconductor cooler 2 fits in the side of heat radiator 3, and the opposite side of heat radiator 3 is provided with radiator fan 31.One deck thermal conductive silicon glue-line is coated with between the binding face of the column 12 of semiconductor cooler 2 and refrigeration platform 1; Be coated with one deck thermal conductive silicon glue-line between the binding face of semiconductor cooler 2 and radiator fan 3, improve heat conduction efficiency.
Power switch 4 by Bracket setting refrigeration platform 1 level table 11 below and be positioned at above heat radiator 3, this power switch 4 is electrically connected with semiconductor cooler 2.
Refrigerating fan 5 is arranged on the right side of the column 12 of refrigeration platform 1, and is positioned at the below of the level table 11 of refrigeration platform 1.
Air channel 6 comprises vertically disposed left air channel 61, horizontally disposed upper air duct 62 and vertically disposed right air channel 63, the bottom in left air channel 61 is connected with the left end of the level table 11 of refrigeration platform 1, the right-hand member of the top in left air channel 61, the left end of upper air duct 62, upper air duct 62 is connected successively with the top in right air channel 63, and the bottom in right air channel 63 is connected with the air outlet of refrigerating fan 5.And the left surface in right air channel 63 contacts with the right-hand member of the level table 11 of refrigeration platform 1.Air channel 6 in approximate " door " shape structure, above the level table 11 covering on refrigeration platform 1.
Between the lower surface that single-chip microcomputer 71 is arranged on the level table 11 of refrigeration platform 1 and the upper surface of refrigerating fan 5; Temperature sensor 72 and charactron 73 by support installing above the level table 11 of refrigeration platform 1.Temperature sensor 72 and charactron 73 are electrically connected with institute single-chip microcomputer 71 respectively.Single-chip microcomputer 71 is electrically connected with semiconductor cooler 2 by dpdt relay.Temperature sensor 72 adopts laser temperature-measuring head, and for measuring the upper surface temperature of measured workpiece 8 and survey instrument 9 in real time, charactron 73 shows the value of Current Temperatures and design temperature.
Constant temperature measurement platform of the present utility model also comprises the rechargeable battery 10 of the below of the level table 11 being arranged on refrigeration platform 1, and rechargeable battery 10 is electrically connected with single-chip microcomputer 71.Rechargeable battery 10 is preferably lithium battery, can use constant temperature measurement platform of the present utility model not having the working site of alternating current.
In the present embodiment, the model of single-chip microcomputer 71 is STM32F103C8T6.
The principle of work of constant temperature measurement platform of the present utility model is:
After turning on the power switch 4, refrigeration platform 1 contacts heat conduction with measured workpiece 8 with survey instrument 9, the refrigerating fan 5 be simultaneously arranged on refrigeration platform 1 produces cold wind, by air channel 6 from left, three the direction opening part air blast forwards in the right side, form gas curtain, even if also can not ensure in constant temperature enclosure that measured workpiece 8 and survey instrument 9 can constant temperature.In isothermal process, laser temperature-measuring head 72 measures the upper surface temperature of measured workpiece 8 and survey instrument 9 in real time, according to the difference of actual temperature and design temperature, determine that the duty of semiconductor cooler 2 is refrigeration or heating by single-chip microcomputer 71, forward and reverse energising uses dpdt relay, and have charactron 73 to show the value of Current Temperatures and design temperature, semiconductor cooler 2 is closed after temperature reaches 20 ± 0.1 DEG C, but keep refrigerating fan 5 to work, gas curtain is not closed, when temperature exceedes this threshold value, single-chip microcomputer 71 sends instructions and to freeze to semiconductor cooler 2 or heat, ensure that temperature is within 20 ± 0.5 DEG C.
Semiconductor cooler 2 is the devices utilizing the heat-electrical effect of semiconductor to produce cold, connects two blocks of different metals with conductor, connects direct current, then a contact place temperature reduces, and another contact place temperature raises.If by reverse power connection, then the temperature inverse variation at contact place.This phenomenon is called peltier effect, also known as heat-electrical effect.Heat-the electrical effect of simple metal is very little, if replace metal with a N-type semiconductor and a P-type semiconductor, effect is just much bigger.The principle of work of semiconductor refrigerating produces heat pump effect for utilizing PN junction, and semiconductor cooler has noiseless, friction, do not need the features such as cold-producing medium, volume are little, lightweight, and reliable operation, easy and simple to handle, be easy to carry out cold regulation.
Constant temperature measurement platform of the present utility model, becomes the higher alumina based material of thermal conductivity pointedly by air dielectric.Meanwhile, thermal source has selected the semiconductor cooler 2 that novel semiconductor material is made, the heat pump effect utilizing PN junction to produce, and replaces heavy compressor, is absorbed rapidly by heat.Constant temperature measurement platform uses advanced laser temperature-measuring head 72 and single-chip microcomputer 71, by laser temperature-measuring head 72 Real-time Collection temperature data, the internal processes comparison Current Temperatures of single-chip microcomputer 71 and the deviation of design temperature, switch the cold and hot mode of operation of semiconductor cooler 2, the closed-loop control of formation temperature, controls the constant-temperature precision of constant temperature measurement platform at ± 0.1 DEG C
In sum, constant temperature measurement platform of the present utility model, the pattern of traditional heat radiation and thermal convection isothermal is changed into the heat transfer of alumina based material, substantially increase the efficiency of heat conduction, semiconductor material add the Energy Efficiency Ratio and portability that improve constant temperature measurement platform, the closed-loop control of single-chip microcomputer and temperature sensor substantially increases efficiency and the stability of isothermal, compare traditional natural isothermal, the isothermal efficiency of constant temperature measurement platform will have the lifting of the order of magnitude, solve the problem of measurer isothermal overlong time in precision measurement such as clamp, improve the ability of detection efficiency and Site Detection.
Carry out introducing explanation to constant temperature measurement platform provided by the utility model above, apply specific case herein to set forth embodiment of the present utility model, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, this description should not be construed as restriction of the present utility model, as long as in spirit of the present utility model, to the change of the above embodiment, modification all will drop in Claims scope of the present utility model.
Claims (8)
1. a constant temperature measurement platform, is characterized in that, comprise refrigeration platform, semiconductor cooler, heat radiator, power switch, refrigerating fan, air channel and temperature control system, described temperature control system comprises single-chip microcomputer, temperature sensor and charactron, wherein:
The material of described refrigeration platform is aluminium, and described refrigeration platform is made up of level table and the column be arranged on below level table, T-shaped structure, and level table and the column of described refrigeration platform are one-body molded;
Described semiconductor cooler is positioned at the below of the level table of described refrigeration platform, one end of described semiconductor cooler fits in the left side of the column of described refrigeration platform, the other end of described semiconductor cooler fits in the side of described heat radiator, and the opposite side of described heat radiator is provided with radiator fan;
Described power switch is positioned at above described heat radiator by Bracket setting in the below of the level table of described refrigeration platform, and this power switch is electrically connected with described semiconductor cooler;
Described refrigerating fan is arranged on the right side of the column of described refrigeration platform, and is positioned at the below of the level table of described refrigeration platform;
Described air channel comprises vertically disposed left air channel, horizontally disposed upper air duct and vertically disposed right air channel, the bottom in described left air channel is connected with the left end of the level table of described refrigeration platform, the right-hand member of the top in described left air channel, the left end of described upper air duct, described upper air duct is connected successively with the top in described right air channel, and the bottom in described right air channel is connected with the air outlet of described refrigerating fan;
Between the lower surface that described single-chip microcomputer is arranged on the level table of described refrigeration platform and the upper surface of described refrigerating fan;
Described temperature sensor and charactron by support installing above the level table of described refrigeration platform.
2. constant temperature measurement platform according to claim 1, is characterized in that, described constant temperature measurement platform also comprises the rechargeable battery of the below of the level table being arranged on described refrigeration platform, and described rechargeable battery is electrically connected with single-chip microcomputer.
3. constant temperature measurement platform according to claim 2, is characterized in that, described rechargeable battery is lithium battery.
4. constant temperature measurement platform according to claim 1, is characterized in that, described temperature sensor adopts laser temperature-measuring head.
5. constant temperature measurement platform according to claim 1, is characterized in that,
One deck thermal conductive silicon glue-line is coated with between the binding face of the column of described semiconductor cooler and described refrigeration platform;
One deck thermal conductive silicon glue-line is coated with between the binding face of described semiconductor cooler and described radiator fan.
6. constant temperature measurement platform according to claim 1, is characterized in that, described single-chip microcomputer is electrically connected with described semiconductor cooler by dpdt relay.
7. constant temperature measurement platform according to claim 1, is characterized in that, the left surface in described right air channel contacts with the right-hand member of the level table of described refrigeration platform.
8. constant temperature measurement platform according to claim 1, is characterized in that, described temperature sensor and charactron are electrically connected with described single-chip microcomputer respectively.
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| CN201420648844.2U CN204166410U (en) | 2014-11-03 | 2014-11-03 | A kind of constant temperature measurement platform |
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| CN201420648844.2U CN204166410U (en) | 2014-11-03 | 2014-11-03 | A kind of constant temperature measurement platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111689070A (en) * | 2020-06-17 | 2020-09-22 | 江苏省地震局 | Remote control constant temperature system applied to acceleration sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111689070A (en) * | 2020-06-17 | 2020-09-22 | 江苏省地震局 | Remote control constant temperature system applied to acceleration sensor |
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