CN105989907B - A kind of big surface of emission black-body resource of millimeter wave high temperature - Google Patents

A kind of big surface of emission black-body resource of millimeter wave high temperature Download PDF

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Publication number
CN105989907B
CN105989907B CN201610060840.6A CN201610060840A CN105989907B CN 105989907 B CN105989907 B CN 105989907B CN 201610060840 A CN201610060840 A CN 201610060840A CN 105989907 B CN105989907 B CN 105989907B
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heat source
source
room temperature
substrate
switching
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CN105989907A (en
Inventor
刘永
赵海林
提昂
胡立群
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Institute of Plasma Physics of CAS
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Institute of Plasma Physics of CAS
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K5/00—Irradiation devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating

Abstract

The invention discloses a kind of big surface of emission black-body resources of millimeter wave high temperature, include heat source, room temperature source, room temperature source and heat source switching system, and room temperature source and heat source switching system realize the switching of heat source and room temperature source；The heat source includes heat source substrate, coat of silicon carbide, more heating rods, temperature control systems, heat source substrate surface has periodical pyramidal structure and is carbonized silicon coating covering, more heating rods are evenly distributed on the inside of heat source substrate, the surface of heat source substrate is also embedded with thermocouple, the signal output end of thermocouple and the signal input part of temperature control system connect, and temperature control system is connected with more heating rod controls.The black-body resource of the present invention has the characteristics that the surface of emission is big, frequency spectrum is wide, quick heating；The sensitivity test and intensity absolute calibration for solving the problems, such as milimeter wave detection system are short of normal intensity source.

Description

A kind of big surface of emission black-body resource of millimeter wave high temperature
Technical field
The present invention relates to millimeter wave detection technical field, specially a kind of big surface of emission black-body resource of millimeter wave high temperature.
Background technology
Millimeter-wave technology has great meaning in communication, radar, guidance, remote sensing technology, radio astronomy etc.；It is special It is not that mm-wave imaging technology is increasingly taken seriously in recent years, it is relatively strong with penetration capacity, metal target and week can be distinguished Collarette border does not have the features such as harmful effect to human body.The sensitivity test of milimeter wave detection system and intensity absolute calibration be not from Normal intensity source is opened, black-body resource is a kind of important criteria intensity source.The existing cavity type black-body resource surface of emission is restricted, nothing Method meets the needs of mm-wave imaging technology.The manufacture craft and the relevant technologies of millimeter corrugated source black-body resource are more complex, state Inside also compare shortcoming in this respect.It is mainly concerned with following aspects：(1) how to ensure the equal of face source black-body resource surface temperature Even property；(2) how to ensure that face source black-body resource has high emissivity, for the intensity proportional in source in emissivity, high emissivity can The intensity in guarantee source；(3) how to switch room temperature source and heat source in order to demarcate measuring system.
Invention content
The purpose of patent of the present invention is to solve the manufacture craft and some technical problems of millimeter corrugated source black-body resource, provides one The kind big surface of emission black-body resource of millimeter wave high temperature.
In order to achieve the above object, the technical scheme is that：
A kind of big surface of emission black-body resource of millimeter wave high temperature, it is characterised in that：Include heat source, room temperature source, room temperature source and heat Source switching system, room temperature source and heat source switching system realize the switching of heat source and room temperature source；The heat source include heat source substrate, Coat of silicon carbide, more heating rods, temperature control systems, heat source substrate surface have periodical pyramidal structure and are carbonized silicon coating Covering so that incident light by multiple reflections, has to ensure that heat source in millimeter wave frequency band very high between pyramidal structure Emissivity, more heating rods are evenly distributed on the inside of heat source substrate, to ensure the uniformity of heat source surface temperature, temperature control system System can accurately control the surface temperature of heat source, and the surface of heat source substrate is also embedded with thermocouple, the signal output end of thermocouple It is connect with the signal input part of temperature control system, temperature control system is connected with more heating rod controls.
The big surface of emission black-body resource of the millimeter wave high temperature, it is characterised in that：The heat source substrate uses stainless steel base.
The big surface of emission black-body resource of the millimeter wave high temperature, it is characterised in that：The room temperature source is located at heat source front end, by micro- Wave absorbing material is constituted.
The big surface of emission black-body resource of the millimeter wave high temperature, it is characterised in that：The room temperature source and heat source switching system packet Rack, gear, motor are included, rack is located at the mounting plate in room temperature source and realizes heat source and room in the following, being driven by motor by gear The switching of Wen Yuan.
It is an advantage of the invention that：
The black-body resource of the present invention has the surface of emission big (20 20 centimetres of cm x), frequency spectrum wide (about 80-500 GHz, corresponding wave A length of 0.6-3.75 mm), quick heating (being warming up to 600 degrees Celsius in 30 minutes) the features such as；Efficiently solve milimeter wave detection system Sensitivity test and intensity absolute calibration be short of normal intensity source the problem of.
Description of the drawings
Fig. 1 is the implementation schematic diagram of the present invention.
Fig. 2 (a) is the front Local map of heat source substrate.
Fig. 2 (b) is the side schematic view of heat source substrate.
Specific implementation mode
The specific implementation mode for patent that the present invention will be described in detail combined with Figure 1 and Figure 2, but not to the claim of the present invention It is limited in any way.
A kind of big surface of emission black-body resource of millimeter wave high temperature includes heat source, room temperature source 105, room temperature source and heat source switching system System 106, room temperature source and heat source switching system 106 realize the switching of heat source and room temperature source 105；Heat source include heat source substrate 101, Coat of silicon carbide 102,12 heating rods 103, temperature control systems 104, there is periodical pyramidal structure on 101 surface of heat source substrate simultaneously Be carbonized silicon coating 102 covering so that incident light between pyramidal structure by multiple reflections, to ensure that heat source in millimeter Wave frequency section has very high emissivity, and 12 heating rods 103 are evenly distributed on the inside of heat source substrate 101, to ensure heat source table The uniformity of face temperature, temperature control system 104 can accurately control the surface temperature of heat source, and the surface of heat source substrate 101 is also embedded There are thermocouple, the signal output end of thermocouple to be connect with the signal input part of temperature control system 104, temperature control system 104 adds with more The control connection of hot pin 103；Room temperature source and heat source switching system 106 include rack, gear, motor, and rack is located at room temperature source Mounting plate by motor in the following, driven the switching for realizing heat source and room temperature source 105 by gear.Heat source substrate 101 uses stainless steel Substrate.Room temperature source 105 is located at heat source front end, is made of microwave absorbing material.

Claims (1)

1. a kind of big surface of emission black-body resource of millimeter wave high temperature, it is characterised in that：Include heat source, room temperature source, room temperature source and heat source Switching system, room temperature source and heat source switching system realize the switching of heat source and room temperature source；The heat source includes heat source substrate, carbon SiClx coating, more heating rods, temperature control systems, heat source substrate surface, which has periodical pyramidal structure and is carbonized silicon coating, to be covered Lid, more heating rods are evenly distributed on the inside of heat source substrate, and the surface of heat source substrate is also embedded with thermocouple, the letter of thermocouple The signal input part of number output end and temperature control system connects, and temperature control system is connected with more heating rods controls；
The heat source substrate uses stainless steel base；The room temperature source is located at heat source front end, is made of microwave absorbing material；It is described Room temperature source and heat source switching system include rack, gear, motor, and rack is located at the mounting plate in room temperature source in the following, passing through gear The switching for realizing heat source and room temperature source is driven by motor.
CN201610060840.6A 2016-01-27 2016-01-27 A kind of big surface of emission black-body resource of millimeter wave high temperature Active CN105989907B (en)

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CN110375551A (en) * 2019-07-18 2019-10-25 成都飞机工业（集团）有限责任公司 A kind of high temperature face source heating device

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CN103616567A (en) * 2013-11-27 2014-03-05 西安电子工程研究所 Multi-channel microwave radiation measuring device
CN103616079A (en) * 2013-12-19 2014-03-05 北京无线电计量测试研究所 Method for integrally designing high-accuracy varying temperature microwave black body calibration source
CN104076358A (en) * 2014-07-02 2014-10-01 北京遥感设备研究所 Passive millimeter wave imaging security inspection equipment
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