CN205027824U - Electromagnetic radiation monitor - Google Patents
Electromagnetic radiation monitor Download PDFInfo
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- CN205027824U CN205027824U CN201520820805.0U CN201520820805U CN205027824U CN 205027824 U CN205027824 U CN 205027824U CN 201520820805 U CN201520820805 U CN 201520820805U CN 205027824 U CN205027824 U CN 205027824U
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Abstract
The utility model provides an electromagnetic radiation monitor, including the sensor for gather the signal of telecommunication that electromagnetic signal and output obtained to its processing, zero set amplifier circuit's first input end is used for receiving and exporting standard reference signal, and zero set amplifier circuit's second input and above -mentioned sensor electricity are connected for the above -mentioned signal of telecommunication is received and exported, main control unit is connected with above -mentioned zero set amplifier circuit's output electricity for control zero set amplifier circuit's the first input end and the switching of second input, and receive with handle after enlargeing standard reference signal with enlarge after the signal of telecommunication, output electromagnetic radiation field intensity is worth. Above -mentioned monitor can be through the access module of main control unit automatic switch -over amplifier input to follow -up zero set amplifier circuit enlargies the processing to its incoming signal, and make the monitoring of whole monitor efficient through main control unit, and the degree of accuracy of monitoring data and accuracy are all better, can realize real -time and accurate radiation intensity monitoring.
Description
Technical field
The utility model relates to electromagnetic radiation monitoring field, in particular to a kind of electromagnetic radiation monitoring instrument with drift compensation function.
Background technology
Namely the electromagnetic wave that the mutual change of Electric and magnetic fields produces produces electromagnetic radiation to air-launched or leakage.Wherein, electromagnetic radiation can produce thermal effect, neural effect and cumulative effect on human body, above-mentioned effect all can have an impact to human body, if electromagnetic radiation exceedes safety index, then can the life health of serious threat people, therefore in the place that the crowd is dense such as residential block, need to ensure that electromagnetic radiation is within the scope of safety index, therefore just needs the intensity size of a kind of special electromagnetic radiation monitoring instrument to electromagnetism to measure to carry out assessment and the control of radiation irradiation.
Traditional electromagnetic radiation monitoring instrument gathers electromagnetic signal by sensor, because this electromagnetic signal is fainter, therefore just will be showed by the measured value of electromagnetic intensity through the amplification process of signal.But the electronic devices and components adopted in above-mentioned amplification processing procedure are Sensitive Apparatuses of temperature, and when the temperature is changed, its parameter will change, and finally cause the skew of the static work point of enlarged circuits of its correspondence.In addition, the heat produced when the aging and amplifying circuit of components and parts works also can produce drift.Because amplifying circuit adopts direct-coupled mode, when above-mentioned drift phenomenon makes the quiescent point of input stage that faint change occur, output stage will produce very large change, thus causes the measurement of above-mentioned electromagnetic radiation monitoring instrument not accurate enough.In prior art, above-mentioned monitor measures advance pedestrian work zeroing operation first at the scene, as touching school zero, tune screw school zero, establish the modes such as migration amount school zero to reduce drift, then carries out the accuracy measuring to ensure to measure on the basis of the calibration.
Inventor finds under study for action, and because the interference of drifting about in electromagnetic radiation monitoring instrument is random, therefore in prior art, the mode of artificial zeroing is unfavorable for the real-time adjustment at benchmark zero point, easily causes the accuracy and precision of monitor measurement data poor; In addition, artificial zeroing operating process complexity is loaded down with trivial details, makes inefficiency, thus the work efficiency of whole monitor is also declined greatly.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of electromagnetic radiation monitoring instrument with automatic zero set (AZS) function, process sensed data more fast and accurately, visual real-time analysis and assessment radiation intensity, to improve efficiency, the accuracy and precision of electromagnetic radiation monitoring.
First aspect, the utility model embodiment provides a kind of electromagnetic radiation monitoring instrument, comprising: sensor, zeroing amplifying circuit and master control set;
Described sensor, for gathering electromagnetic signal and exporting the electric signal that described electromagnetic signal process obtains;
Described zeroing amplifying circuit comprises first input end and the second input end; Described first input end, for receiving standard reference signal and exporting described standard reference signal; Described second input end is connected with described sensor electrical, for receiving described electric signal and exporting described electric signal;
Described master control set is electrically connected with the output terminal of described zeroing amplifying circuit, for the switching of the first input end and the second input end that control described zeroing amplifying circuit, and receive the described standard reference signal after amplifying and the described electric signal after amplifying and according to the computing result of the described standard reference signal after described amplification and the described electric signal after described amplification, export electromagnetic radiation field intensity value.
In conjunction with first aspect, the utility model embodiment provides the first possible embodiment of above-mentioned first aspect, and wherein, described zeroing amplifying circuit comprises: fiduciary level maker and operational amplifier; Described first input end and described second input end are all for being connected with the in-phase input end of described operational amplifier;
Described fiduciary level maker is electrically connected with described first input end, for exporting described standard reference signal.
In conjunction with the first possible embodiment of first aspect, the utility model embodiment provides the possible embodiment of the second of above-mentioned first aspect, and wherein, described master control set comprises: master controller and analog to digital converter;
Described analog to digital converter is electrically connected with the output terminal of described zeroing amplifying circuit, for exporting the analog-digital conversion result of the described electric signal after the described standard reference signal after described amplification and described amplification respectively, obtains standardized digital signal and digital signal;
Described master controller is used for carrying out the first difference operation process to described standardized digital signal, and carries out the second difference operation according to the result of the first difference operation process to described digital signal, exports the electromagnetic radiation field intensity value that the second difference operation obtains.
In conjunction with the embodiment that the second of first aspect is possible, the utility model embodiment provides the third possible embodiment of above-mentioned first aspect, wherein, and described master controller, under zeroing mode of operation, control described first input end and be connected with the in-phase input end of described operational amplifier; And in the normal mode of operation, control described second input end and be connected with the in-phase input end of described operational amplifier.
In conjunction with the third possible embodiment of first aspect, the utility model embodiment provides the 4th kind of possible embodiment of above-mentioned first aspect, and wherein, described master controller comprises: first memory and first processor; Described first memory, for receiving and storing described standardized digital signal;
Described first processor is electrically connected with described first memory, for receiving described standardized digital signal and carrying out difference operation process according to the reference signal prestored to described standardized digital signal, obtains modifying factor.
In conjunction with the 4th kind of possible embodiment of first aspect, the utility model embodiment provides the 5th kind of possible embodiment of above-mentioned first aspect, and wherein, described master controller also comprises: second memory and the second processor;
Described second memory, for receiving and storing described modifying factor and described digital signal;
Described second processor is electrically connected with described second memory, for receiving described digital signal and described modifying factor, and carrying out difference operation process according to described modifying factor to described digital signal, obtaining electromagnetic radiation field intensity value.
In conjunction with the 5th kind of possible embodiment of first aspect, the utility model embodiment provides the 6th kind of possible embodiment of above-mentioned first aspect, and wherein, described operational amplifier is two;
Described fiduciary level maker is electrically connected with the in-phase input end of two described operational amplifiers respectively by described first input end, in order to export high level and standard reference signal corresponding to low level respectively; Wherein, the corresponding described modifying factor of the difference result of high level standard reference signal and low level standard reference signal;
Described sensor is electrically connected with the in-phase input end of two described operational amplifiers respectively by described second input end, in order to export high level and electric signal corresponding to low level respectively; Wherein, the corresponding described electromagnetic radiation field intensity value of the difference result of high level electric signal and low level electric signal.
In conjunction with the embodiment that the second of first aspect is possible, the utility model embodiment provides the 7th kind of possible embodiment of above-mentioned first aspect, and wherein, described master control set also comprises timer;
Described timer is electrically connected with described master controller, for receive described master controller send instruction is set, and the switching cycle that instruction arranges the in-phase input end of described first input end and described second input end and described operational amplifier is respectively set according to described, so that described first input end is connected according to the in-phase input end of described switching cycle with described operational amplifier with described second input end.
In conjunction with the 6th kind of possible embodiment or the 7th kind of possible embodiment of first aspect, the utility model embodiment provides the 8th kind of possible embodiment of above-mentioned first aspect, and wherein, described electromagnetic radiation monitoring instrument also comprises display;
Described display is electrically connected with described master controller, for showing the described electromagnetic radiation field intensity value that described master controller process obtains.
In conjunction with the first possible embodiment of first aspect, first aspect to any one possible embodiment in the 7th kind of possible embodiment of first aspect, the utility model embodiment provides the 9th kind of possible embodiment of above-mentioned first aspect, wherein, described electromagnetic radiation monitoring instrument also comprises probe; Described probe is multiple, and multiple described probe is connected with described sensor electrical, and the electromagnetic signal for detection space environment also exports described electromagnetic signal to described sensor respectively.
The electromagnetic radiation monitoring instrument that the utility model embodiment provides, comprises sensor, zeroing amplifying circuit and master control set, its first input end by the amplifying circuit that returns to zero and the second input end are respectively zeroing amplifying circuit and provide standard reference signal and electric signal, wherein, above-said current signal is the switching signal after the electromagnetic signal process that sensor gathers, in addition, master control set is for controlling zeroing the first output terminal of amplifying circuit and the switching of the second output terminal, and by exporting electromagnetic radiation field intensity value to the process computing of the standard reference signal after amplification and the electric signal after amplifying respectively, with in prior art by electromagnetic radiation monitoring instrument that manual type regulates, make monitor efficiency lower and obtain Monitoring Data accuracy compare with accuracy is poor, the access module of its zeroing input amplifier that automatically switched by master controller, pre-service is being carried out to the input signal under its each input pattern, finally again computing is carried out to the signal after the process obtained under two kinds of patterns, obtain electromagnetic radiation field intensity value, it can replace artificial realization automatically to monitor, make the monitoring efficiency of whole monitor high, and the drift phenomenon that the reason such as temperature effect, component aging causes can be reduced, make the data of monitoring more accurate, be conducive to follow-up according to this Data Control electromagnetic radiation within the scope of safety index, with thinking that resident provides better living environment.
For making above-mentioned purpose of the present utility model, feature and advantage become apparent, preferred embodiment cited below particularly, and coordinate appended accompanying drawing, be described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment below, be to be understood that, the following drawings illustrate only some embodiment of the present utility model, therefore the restriction to scope should be counted as, for those of ordinary skill in the art, under the prerequisite not paying creative work, other relevant accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 shows the structural representation of a kind of electromagnetic radiation monitoring instrument that the utility model embodiment provides;
Fig. 2 shows in a kind of electromagnetic radiation monitoring instrument that the utility model embodiment provides the structural representation of the amplifying circuit that returns to zero;
Fig. 3 shows the structural representation of master control set in a kind of electromagnetic radiation monitoring instrument that the utility model embodiment provides;
Fig. 4 shows the structural representation of master controller in a kind of electromagnetic radiation monitoring instrument that the utility model embodiment provides;
Fig. 5 shows the structural representation of the another kind of electromagnetic radiation monitoring instrument that the utility model embodiment provides.
Main element symbol description in figure:
11, sensor; 22, return to zero amplifying circuit; 33, master control set; 221, fiduciary level maker; 222, operational amplifier; 331, master controller; 332, analog to digital converter; 3311, first memory; 3312, first processor; 3313, second memory; 3314, the second processor.
Embodiment
Below in conjunction with accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.The assembly of the utility model embodiment describing and illustrate in usual accompanying drawing herein can be arranged with various different configuration and design.Therefore, below to the detailed description of the embodiment of the present utility model provided in the accompanying drawings and the claimed scope of the present utility model of not intended to be limiting, but selected embodiment of the present utility model is only represented.Based on embodiment of the present utility model, the every other embodiment that those skilled in the art obtain under the prerequisite not making creative work, all belongs to the scope of the utility model protection.
It is random for considering that the drift of the electromagnetic radiation monitoring instrument in correlation technique is disturbed, and the efficiency of old friend's work adjustment is lower, thus the work efficiency of whole monitor also can be declined greatly; In addition, the mode of artificial adjustment can not ensure to adjust in real time zero point benchmark, thus the data precision causing monitor to be measured and degree of accuracy poor.
Based on this, the utility model provides a kind of electromagnetic radiation monitoring instrument with drift compensation function, this monitor can process sensed data more fast and accurately, visual real-time analysis and assessment radiation intensity, the accuracy and precision of monitoring the electromagnetic radiation data obtained can be made all better, and whole process is without the need to artificial participation, substantially increase monitoring efficiency.
The concrete structure of the electromagnetic radiation monitoring instrument that the utility model provides is as follows:
See Fig. 1, the utility model embodiment provides a kind of electromagnetic radiation monitoring instrument.This monitor specifically comprises: sensor 11, zeroing amplifying circuit 22 and master control set 33; Sensor 11, for gathering electromagnetic signal and exporting the electric signal that electromagnetic signal process obtains;
Zeroing amplifying circuit 22 comprises first input end and the second input end; First input end, for receiving standard reference signal and outputting standard reference signal; Second input end is electrically connected with sensor 11, for receiving electric signal and exporting electric signal;
Master control set 33 is electrically connected with the output terminal of zeroing amplifying circuit 22, for controlling the zeroing first input end of amplifying circuit 22 and the switching of the second input end, and receive the standard reference signal after amplifying and the electric signal after amplifying and according to the standard reference signal after amplifying and the computing result of electric signal after amplifying, export electromagnetic radiation field intensity value.
The electromagnetic radiation monitoring instrument that the utility model embodiment provides, with the electromagnetic radiation monitoring instrument manually carrying out in prior art regulating, monitoring efficiency lower and obtain Monitoring Data accuracy compare with accuracy is poor, the access module of its zeroing amplifying circuit 22 input end that automatically switched by master controller 331, again pre-service is carried out to the input signal under its each input pattern, finally carry out computing, to obtain electromagnetic radiation field intensity value according to the signal after process under two kinds of patterns; It can replace artificial realization automatically to monitor, make the monitoring efficiency of whole monitor high, and the drift phenomenon that the reason such as temperature effect, component aging causes can be reduced, make the data of monitoring more accurate, be conducive to follow-up according to this Data Control electromagnetic radiation within the scope of safety index, with thinking that resident provides better living environment.
Concrete, sensor 11 in the present embodiment is preferably electromagnetic sensor, this electromagnetic sensor adopts the manufacture craft of compact electromagnetic sensor, and the little quality of volume is light, and it can cause the change of sensitive element magnetic property to convert electric signal to this extraneous factor of magnetic field.Wherein, the outstanding feature of above-mentioned electromagnetic sensor is untouchable, with the various physical phenomenons of magnetic field or magnetic medium for intermediate quantity is measured, its collection signal is subject to the impact of measured object hardly, anti-pollution, noise robustness are strong, even also reliably can carry out the work of electromagnetic signal detection at above-mentioned electromagnet radiation detection instrument under very rugged environment condition.In addition, the electromagnetic signal collected also is converted to electric signal by the change-over circuit of self by above-mentioned electromagnetic sensor.
In order to ensure that follow-up master control set 33 better processes the electric signal that the sensor 11 gathers, by zeroing amplifying circuit 22, amplification process is carried out to the electric signal of above-mentioned collection and another road input signal of self in the present embodiment, the electric signal after being amplified and standard reference signal; In addition, this zeroing amplifying circuit 22 also for using electromagnetic signal and another road signal of self as input signal, is issued master control set 33, is processed respectively by master control set 33 to two paths of signals;
Concrete, first master control set 33 processes to above-mentioned zeroing amplifying circuit 22 amplification the standard reference signal obtained and carries out computing, namely the difference calculated between standard reference signal and the reference signal prestored obtains modifying factor, wherein, namely modifying factor is the data representation of the drift phenomenon caused by the reason such as temperature effect, component aging; Then, above-mentioned master control set 33 processes to amplification the electric signal obtained again and carries out process computing, calculate the difference between electric signal and above-mentioned modifying factor that above-mentioned amplification process obtains and obtain electromagnetic radiation field intensity value, wherein, modifying factor is as intermediate quantity, be eliminated in above-mentioned twice calculation processes, thus reduce in electromagnetic radiation monitoring instrument due to drift value that a variety of causes causes.
Brief description is carried out to the zeroing amplifying circuit 22 that the present embodiment provides below: wherein, this zeroing amplifying circuit 22 comprises first input end and the second input end, and it is by first input end reception standard reference signal and using the first via input signal of above-mentioned standard reference signal as master control set 33; In addition, above-mentioned zeroing amplifying circuit 22 also by second input end receiving sensor 11 send electric signal and using the second road input signal of above-said current signal as master controller 331.Wherein, above-mentioned standard reference signal is as a constant magnitude of voltage, namely its effect is to provide a constant voltage, in order to generate the first via input signal of a constant electric signal as master control set 33, so that master control set 33 obtains modifying factor to carrying out computing according to this constant electric signal.
Consider the electromagnetic signal of the sensor 11 and above-mentioned zeroing amplifying circuit 22 in transmitting procedure due to the interference such as signal attenuation, noise meeting distortion, if and signal is subject to noise corrupted, what the amplifying circuit 22 that then returns to zero amplified is distorted signal, therefore, in order to be reduced in the interfere information produced in the process of Signal transmissions as much as possible, first the present embodiment was electrically connected a filtering circuit before zeroing amplifying circuit 22, filtering process is carried out, in order to the above-mentioned undesired signal of filtering for the electric signal after changing sensor 11.
In addition, the electromagnetic radiation monitoring instrument that the utility model embodiment provides also comprises a master control set 33, this master control set 33 controls the zeroing first input end of amplifying circuit 22 and the switching of the second input end by the switching control function of self, when master control set 33 is switched to the first input end of zeroing amplifying circuit 22, control above-mentioned first input end to be connected with fiduciary level maker 221, now, zeroing amplifying circuit 22 receives the standard reference signal of fiduciary level maker 221 transmission and carries out amplification process, last master control set 33 carries out calculation process to amplifying the signal after processing, when master control set 33 switches the second input end controlling zeroing amplifying circuit 22, control above-mentioned second input end to be connected with sensor 11, now, the electric signal that zeroing amplifying circuit 22 receiving sensor 11 sends carries out amplification process equally, equally, this master control set 33 carries out calculation process according to above-mentioned operation result again to this amplifying signal, to obtain electromagnetic radiation field intensity value.
Wherein, above-mentioned fiduciary level maker 221, for providing a constant standard reference signal, can be the voltage source generating constant level.Be connected by the first input end of fiduciary level maker 221 with zeroing amplifying circuit 22, the standard reference signal provided is sent to zeroing amplifying circuit 22, to participate in follow-up analyzing and processing.
See Fig. 2, operational amplifier 222 becomes device as the core group of zeroing amplifying circuit 22, by the electrical connection of first input end and this operational amplifier 222, the standard reference signal that first input end receives is inputed to the in-phase input end of operational amplifier 222, and to ensure the output of operational amplifier 222 can increase along with the forward of standard reference signal, forward at double increases.Same, the electrical connection of the second input end and operational amplifier 222, the electric signal that second input end receives is inputed to the in-phase input end of operational amplifier 222, and to ensure the output of operational amplifier 222 can increase along with the forward of electric signal, forward at double increases.
Further, see Fig. 3, the master control set 33 in the electromagnetic radiation monitoring instrument that the present embodiment provides comprises master controller 331 and analog to digital converter 332, concrete,
Conveniently the later stage carries out the analysis and treament of electronic system to the standard reference signal after amplification and the electric signal after amplifying, and this master control set 33 comprises an analog to digital converter 332.Consider that the standard reference signal after amplification and the electric signal after amplifying are easy to be interfered in the process of transmission as simulating signal, the present embodiment is connected a filtering circuit with before analog to digital converter 332 after zeroing amplifying circuit 22, for carrying out filtering process to the standard reference signal after amplification process and electric signal.By the electrical connection of analog to digital converter 332 with above-mentioned filtering circuit, for the standard reference signal after the amplification after filtering process and the electric signal after amplifying are converted to corresponding standardized digital signal and digital signal, so that follow-up master controller 331 directly can carry out analyzing and processing to standardized digital signal and digital signal.
Wherein, above-mentioned master controller 331 is as the kernel control chip of master control set 33, first the first difference operation process of standardized digital signal is carried out, namely be that the digital quantity corresponding to the standardized digital signal of digital to analog converter output and the standard reference signal of known number of stages of amplification is carried out absolute difference computing, obtain offseting digital quantity, and then the difference operation between the digital signal to export according to above-mentioned skew digital quantity and digital to analog converter, export and obtain electromagnetic radiation field intensity value.
In addition, above-mentioned master controller 331 has two kinds of mode of operations, and the wherein one in two kinds of mode of operations can be selected to carry out work.When master controller 331 is in zeroing mode of operation, the first input end that can control zeroing amplifying circuit 22 is connected with between the in-phase input end of operational amplifier 222; When master controller 331 is in normal mode of operation, second input end that can control zeroing amplifying circuit 22 is connected with between the in-phase input end of operational amplifier 222.Wherein, under zeroing mode of operation, master controller 331 obtains modifying factor by carrying out analyzing and processing to the first via input signal received; Under normal mode of operation, master controller 331 eliminates modifying factor by carrying out analyzing and processing to the second road input signal received, and obtains electromagnetic radiation field intensity value.
Further, see Fig. 4, in the present embodiment, master controller 331 also comprises first memory 3311, first processor 3312, second memory 3313 and the second processor 3314, wherein, above-mentioned first memory 3311 and first processor 3312 are for storing and operational analysis standardized digital signal, and above-mentioned second memory 3313 and the second processor 3314 utilize the former analysis result to store and operational analysis digital signal again.
Concrete, first memory 3311, for receiving the standardized digital signal after being changed via analog to digital converter 332 by the standard reference signal after amplifying, and stores this standardized digital signal.In addition, above-mentioned first memory 3311 is also previously stored with the reference signal corresponding to standard reference signal after amplification.The standardized digital signal exported by first processor 3312 Reference Signal and analog to digital converter 332 device carries out difference operation, obtains modifying factor, and exports above-mentioned modifying factor to second memory 3313.The zeroing mode of operation of the corresponding master controller 331 of above-mentioned processing procedure.
In addition, master controller 331 controls the switching of zeroing mode of operation to normal mode of operation by its timing function.Then above-mentioned second memory 3313 receives and stores the digital signal of modifying factor and the output of modulus dress parallel operation, intermediate quantity modifying factor and modulus filled by the second processor 3314 digital signal that parallel operation exports and carry out difference operation, obtaining electromagnetic radiation field intensity value, is namely the digitized representations value of the electromagnetic signal power obtaining space environment.Wherein, modifying factor represents on an equal basis the one of above-mentioned swing digital amount.Provide a concrete example of above-mentioned processing procedure below.
See Fig. 5, note standard reference signal and electric signal are respectively U
0and U
i, the standard reference signal after amplification and the electric signal after amplifying are respectively nU
0and nU
i(wherein, n is number of stages of amplification), then through analog to digital converter 332 export standardized digital signal and digital signal be respectively nA
0and nA
i, drift value and swing digital amount are respectively Us and As, known, through twice computing, revise the side-play amount as intermediate value, obtain the numeral A of the electromagnetic radiation field intensity value F corresponding to electromagnetic signal
i.
Concrete, when circuit working is when returning to zero mode of operation, standard reference signal U
0processing output voltage through operational amplifier 222 is nU
0+ Us, then analog to digital converter 332 correspondence exports as nA
0+ As, by this result stored in first memory 3311.Due to calibration reference signal U
0known with the number of stages of amplification n of zeroing amplifying circuit 22, the output valve nA of analog to digital converter 332 is carried out by first processor 3312
0+ As and nA
0between difference operation, can obtain amplifier amplifier drift produce the As corresponding to Us, namely obtain modifying factor subvalue.When circuit is in normal mode of operation, controlled the switching over returned to zero between amplifying circuit 22 two input ends by master controller 331, now, the second input end is electrically connected to receive electric signal U with sensor 11
i, the electric signal amplified after process obtains nAs+As through analog to digital converter 332 circuit, and this result is stored to second memory 3313.Difference operation between output valve nAs+As and the As being carried out analog to digital converter 332 by the second processor 3314, can obtain the electromagnetic signal U that sensor 11 collects
icorresponding A
i.Said process achieves automatic zero set (AZS), compensate for the discharge circuit drift because environmental change and device aging cause.
Further, consider the different demands of different user, the operational amplifier 222 in above-mentioned electromagnetic radiation monitoring instrument can be two, carries out the amplification process of high level signal and low level signal respectively.
Concrete, fiduciary level maker 221 can export high level and standard reference signal corresponding to low level respectively, wherein, receive above-mentioned high level standard reference signal and low level standard reference signal by first input end and transfer to the in-phase input end of two operational amplifiers 222 respectively, then, two-way standard reference signal carries out the conversion between simulating signal and discrete signal respectively by analog to digital converter 332, is exported by the corresponding modifying factor of difference result of master controller 331 by high level standard reference signal and low level standard reference signal.
In addition, sensor 11 gathers electromagnetic signal and exports the electric signal after changing, and this electric signal is made up of high level electric signal and low level electric signal.After respectively the in-phase input end of above-mentioned high level electric signal and low level electric signal transmission to two operational amplifier 222 being carried out amplification process by the second input end, carry out analog to digital conversion to amplifying the electric signal after processing and export analog-to-digital result to master controller 331 again, the difference operation being undertaken being correlated with by above-mentioned master controller 331 exports electromagnetic radiation field intensity value.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the processing procedure of the two paths of signals of foregoing description, with reference to the corresponding process of the process of aforementioned Zhong mono-road signal, can not repeat them here.
Further, consider that master controller 331 controls first input end and the switching between the second input end and operational amplifier 222, the electromagnetic radiation monitoring instrument that the present embodiment provides also comprises timer.
Concrete, by the electrical connection between master controller 331 and timer, the instruction that arranges carrying adjustment cycle information is sent to timer by master controller 331, this timer according to above-mentioned carry adjustment cycle information the setting that the switching cycle of the in-phase input end of first input end and the second input end and operational amplifier 222 is carried out in instruction is set, to support that the relevant hand-off process that performs of master controller 331 operates on time, ensure further on the basis obtaining intermediate value modifying factor, export final value electromagnetic radiation field intensity value.
Further, consider that above-mentioned electromagnetic radiation field intensity value can be stored in second memory 3313 li, need specific reading device to go to read above-mentioned second memory 3313 when wanting to know above-mentioned data, complex operation and intuitively cannot check above-mentioned electromagnetic radiation field intensity value, so this monitor is also provided with display, it is connected with second memory 3313 with master controller 331, object is to electromagnetic radiation field intensity value be shown intuitively, checking for user.
Further, in the practical application of the electromagnetic radiation monitoring instrument provided at the present embodiment, inevasible meeting is subject to the impact of environmental noise etc., and this will affect the degree of accuracy of monitoring radiation intensity.Based on solving the problem, above-mentioned monitor also comprises probe, and this probe can intercept the interference of noise noise ripple to reduce background noise interference.Consider again the receiving area needing to expand monitoring, above-mentioned probe can be multiple, and the electromagnetic signal of the many places space environment detected is transferred to sensor 11 and carries out follow-up analyzing and processing by multiple probe respectively.
The electromagnetic radiation monitoring instrument that the utility model embodiment provides, comprises sensor 11, zeroing amplifying circuit 22 and master control set 33, its first input end by the amplifying circuit 22 that returns to zero and the second input end are respectively zeroing amplifying circuit 22 and provide standard reference signal and electric signal, wherein, above-said current signal is the switching signal after the electromagnetic signal process that sensor 11 gathers, in addition, master control set 33 is for controlling zeroing the first output terminal of amplifying circuit 22 and the switching of the second output terminal, and by exporting electromagnetic radiation field intensity value to the process computing of the standard reference signal after amplification and the electric signal after amplifying respectively, with in prior art by electromagnetic radiation monitoring instrument that manual type regulates, make monitor efficiency lower and obtain Monitoring Data accuracy compare with accuracy is poor, the access module of its zeroing amplifying circuit 22 input end that automatically switched by master controller 331, again pre-service is carried out to the input signal under its each input pattern, signal after the process finally obtained under to two kinds of patterns carries out computing, obtain electromagnetic radiation field intensity value, it can replace artificial realization automatically to monitor, make the monitoring efficiency of whole monitor high, and the drift phenomenon that the reason such as temperature effect, component aging causes can be reduced, make the data of monitoring more accurate, be conducive to follow-up according to this Data Control electromagnetic radiation within the scope of safety index, with thinking that resident provides better living environment.
In the embodiment that the application provides, should be understood that, disclosed system, device, can realize by another way.Device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, again such as, multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some communication interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the utility model can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.
If described function using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part of the part that the technical solution of the utility model contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the utility model.And aforesaid storage medium comprises: USB flash disk, portable hard drive, ROM (read-only memory) (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.
The above; be only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (10)
1. electromagnetic radiation monitoring instrument, is characterized in that, comprising: sensor, zeroing amplifying circuit and master control set;
Described sensor, for gathering electromagnetic signal and exporting the electric signal that described electromagnetic signal process obtains;
Described zeroing amplifying circuit comprises first input end and the second input end; Described first input end, for receiving standard reference signal and exporting described standard reference signal; Described second input end is connected with described sensor electrical, for receiving described electric signal and exporting described electric signal;
Described master control set is electrically connected with the output terminal of described zeroing amplifying circuit, for the switching of the first input end and the second input end that control described zeroing amplifying circuit, and receive the described standard reference signal after amplifying and the described electric signal after amplifying and according to the computing result of the described standard reference signal after described amplification and the described electric signal after described amplification, export electromagnetic radiation field intensity value.
2. electromagnetic radiation monitoring instrument according to claim 1, is characterized in that, described zeroing amplifying circuit comprises: fiduciary level maker and operational amplifier; Described first input end and described second input end are all for being connected with the in-phase input end of described operational amplifier;
Described fiduciary level maker is electrically connected with described first input end, for exporting described standard reference signal.
3. electromagnetic radiation monitoring instrument according to claim 2, is characterized in that, described master control set comprises: master controller and analog to digital converter;
Described analog to digital converter is electrically connected with the output terminal of described zeroing amplifying circuit, for exporting the analog-digital conversion result of the described electric signal after the described standard reference signal after described amplification and described amplification respectively, obtains standardized digital signal and digital signal;
Described master controller is used for carrying out the first difference operation process to described standardized digital signal, and carries out the second difference operation according to the result of the first difference operation process to described digital signal, exports the electromagnetic radiation field intensity value that the second difference operation obtains.
4. electromagnetic radiation monitoring instrument according to claim 3, is characterized in that, described master controller, under zeroing mode of operation, controls described first input end and is connected with the in-phase input end of described operational amplifier; And in the normal mode of operation, control described second input end and be connected with the in-phase input end of described operational amplifier.
5. electromagnetic radiation monitoring instrument according to claim 4, is characterized in that, described master controller comprises: first memory and first processor; Described first memory, for receiving and storing described standardized digital signal;
Described first processor is electrically connected with described first memory, for receiving described standardized digital signal and carrying out difference operation process according to the reference signal prestored to described standardized digital signal, obtains modifying factor.
6. electromagnetic radiation monitoring instrument according to claim 5, is characterized in that, described master controller also comprises: second memory and the second processor;
Described second memory, for receiving and storing described modifying factor and described digital signal;
Described second processor is electrically connected with described second memory, for receiving described digital signal and described modifying factor, and carrying out difference operation process according to described modifying factor to described digital signal, obtaining electromagnetic radiation field intensity value.
7. electromagnetic radiation monitoring instrument according to claim 6, is characterized in that, described operational amplifier is two;
Described fiduciary level maker is electrically connected with the in-phase input end of two described operational amplifiers respectively by described first input end, in order to export high level and standard reference signal corresponding to low level respectively; Wherein, the corresponding described modifying factor of the difference result of high level standard reference signal and low level standard reference signal;
Described sensor is electrically connected with the in-phase input end of two described operational amplifiers respectively by described second input end, in order to export high level and electric signal corresponding to low level respectively; Wherein, the corresponding described electromagnetic radiation field intensity value of the difference result of high level electric signal and low level electric signal.
8. electromagnetic radiation monitoring instrument according to claim 3, is characterized in that, described master control set also comprises timer;
Described timer is electrically connected with described master controller, for receive described master controller send instruction is set, and the switching cycle that instruction arranges the in-phase input end of described first input end and described second input end and described operational amplifier is respectively set according to described, so that described first input end is connected according to the in-phase input end of described switching cycle with described operational amplifier with described second input end.
9. the electromagnetic radiation monitoring instrument according to claim 7 or 8, is characterized in that, also comprise display;
Described display is electrically connected with described master controller, for showing the described electromagnetic radiation field intensity value that described master controller process obtains.
10. the electromagnetic radiation monitoring instrument according to claim 1-8 any one, is characterized in that, also comprise probe; Described probe is multiple, and multiple described probe is connected with described sensor electrical, and the electromagnetic signal for detection space environment also exports described electromagnetic signal to described sensor respectively.
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| CN201520820805.0U CN205027824U (en) | 2015-10-21 | 2015-10-21 | Electromagnetic radiation monitor |
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| CN201520820805.0U CN205027824U (en) | 2015-10-21 | 2015-10-21 | Electromagnetic radiation monitor |
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| CN205027824U true CN205027824U (en) | 2016-02-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606905A (en) * | 2016-04-05 | 2016-05-25 | 北京森馥科技股份有限公司 | Electromagnetic radiation monitor with weighting function |
| CN108663588A (en) * | 2018-04-10 | 2018-10-16 | 歌尔科技有限公司 | Electromagnetism test probe, electromagnetism test device and electromagnetism test method |
| CN113917240A (en) * | 2021-10-08 | 2022-01-11 | 广东电网有限责任公司 | Electromagnetic radiation measuring device and control system of gentle straight valve room |
-
2015
- 2015-10-21 CN CN201520820805.0U patent/CN205027824U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606905A (en) * | 2016-04-05 | 2016-05-25 | 北京森馥科技股份有限公司 | Electromagnetic radiation monitor with weighting function |
| CN105606905B (en) * | 2016-04-05 | 2018-11-27 | 北京森馥科技股份有限公司 | Electromagnetic radiation monitoring instrument with weighted function |
| CN108663588A (en) * | 2018-04-10 | 2018-10-16 | 歌尔科技有限公司 | Electromagnetism test probe, electromagnetism test device and electromagnetism test method |
| CN108663588B (en) * | 2018-04-10 | 2020-06-30 | 歌尔科技有限公司 | Electromagnetic test probe, electromagnetic test device and electromagnetic test method |
| CN113917240A (en) * | 2021-10-08 | 2022-01-11 | 广东电网有限责任公司 | Electromagnetic radiation measuring device and control system of gentle straight valve room |
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Inventor after: Lu Dejian Inventor after: Zhang Liyao Inventor after: Li Li Inventor after: Li Hualiang Inventor before: Lu Dejian Inventor before: Zhang Liyao Inventor before: Xue Huan |
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Effective date of registration: 20160627 Address after: 100012 Beijing City, Chaoyang District Lize two Road No. 1 room 517 Patentee after: Beijing Safety Technology Co,.Ltd Patentee after: ELECTRIC POWER RESEARCH INSTITUTE, GUANGDONG POWER GRID CO., LTD. Address before: 100012 Beijing City, Chaoyang District Lize two Road No. 1 room 517 Patentee before: Beijing Safety Technology Co,.Ltd |