CN1433165A - Measurement device and method for micropower short-wave FM radio set - Google Patents
Measurement device and method for micropower short-wave FM radio set Download PDFInfo
- Publication number
- CN1433165A CN1433165A CN02102486A CN02102486A CN1433165A CN 1433165 A CN1433165 A CN 1433165A CN 02102486 A CN02102486 A CN 02102486A CN 02102486 A CN02102486 A CN 02102486A CN 1433165 A CN1433165 A CN 1433165A
- Authority
- CN
- China
- Prior art keywords
- testing
- signal
- frequency
- reflector
- iron cage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
In the present invention, set iron cage nets for containing object to be tested and its emitter and receiver at the test stations of production line and a distribance emitter with the same frequency with the emitted and carrier wave with no loaded signal is set between two iron cage nets. It is composed of frequency varying circuit, crystal osciollation and frequency regulation circuit, power regulation circuit, power output circuit and emission antenna which are connected in proper order. When they are tested, the electric wave radiated outside will be attenuated by the iron cage net and will be disturbed-damaged by the disturbance emitter, the disturbed-damaged electric wave will be again atlenuated by the iron cage net before it reaches another receiver and it will not be decoded by the receiver.
Description
Technical field
The present invention relates to the testing apparatus and the method for testing of shortwave frequency modulation type digital radio under a kind of micropower, especially refer to a kind ofly can prevent the testing station of disturbing being provided with simultaneously on the production line to have more than two, and between two testing stations, be provided with a victim emitter again, use and reach the effect that comprehensively prevents two adjacent testing station phase mutual interference.
Background technology
Under the flourish situation of science and technology, the employed general articles for use of people, great innovation has also been arranged gradually, and make following scientific and technological tendency towards a wireless direction, yet, such as shortwave frequency modulation type digital radio product under the various micropowers when manufacturing, big city meets with the problem of phase mutual interference, and traditional method of testing (as shown in Figure 1), be to utilize the mode of containing electric wave to reach the purpose of test, promptly be that the semi-finished product that will assemble on the first station 1 focus on certain quantity, semi-finished product being transported to isolation ward 2 (Faraday cage) tests singly again, and then will test good semi-finished product and deliver to production line, and banish to second station 3 and be assembled into finished product, and this finished product also will be concentrated test again, so, these finished products being transported to isolation ward 2 (Faraday cage) tests singly again, and then will test good finished product and send production line back to, pack steps such as 4 at last, so measured object needs to collect through four times, carrying, leave production line for twice and enter isolation ward 2 for twice, thereby cause that to make on the flow process waste clear with efficient man-hour, and might be in the process of carrying the generation problem; Moreover above-mentioned isolation ward 2 is principles of having used electromagnetic shielding, and it is made to adopt multilayer to have a metallic plate of hole, though good for the effect that blocks electric wave, its price is too expensive and very heavy, and takies the available confined space of factory.
Summary of the invention
The object of the present invention is to provide the testing apparatus and the method for testing of shortwave frequency modulation type digital radio under a kind of micropower, especially refer to a kind ofly can prevent the testing station of disturbing being provided with simultaneously on the production line to have more than two, and between two testing stations, be provided with a victim emitter again, use and reach the effect that comprehensively prevents two adjacent testing station phase mutual interference.
Another object of the present invention is to provide the testing apparatus and the method for testing of shortwave frequency modulation type digital radio under the described micropower, can exempt carrying, the strange land test of test product, effectively shorten man-hour and reduce human cost.
An of the present invention purpose is to provide the testing apparatus and the method for testing of shortwave frequency modulation type digital radio under the described micropower, can significantly reduce the cost of testing apparatus, and saves the available confined space of factory.
Technical scheme of the present invention is achieved in that the method for testing of shortwave frequency modulation type digital radio under a kind of micropower, on production line, be provided with at least two testing stations, an iron cage net that can hold measured object and reflector and receiver is established in each testing station, be provided with again between adjacent two iron cage nets one with described reflector with frequently but the victim emitter of the carrier wave of no-load signal; When two testing stations are tested simultaneously, the radio wave attenuation that this iron cage net is penetrated the external width of cloth earlier, and electric wave that again can disturbed reflector is hindered and damaged, and this electric wave after hindering and damaging, before arriving another receiver, can be given decay once again by iron cage net again, and be covered, and this electric wave is under the situation of the carrier wave that is attenuated the no-load signal by the electric wave in the iron cage net, naturally be not to be received device to decode, and then reach the effect that comprehensively prevents two adjacent testing station phase mutual interference.
The method of testing of shortwave frequency modulation type digital radio under a kind of micropower of the present invention, described victim emitter, for the carrier signal strength that utilizes the no-load signal frequency approach,, the adjacent reception device can't be decoded other signals in order to produce destructive interference greater than carrier signal.
The method of testing of shortwave frequency modulation type digital radio under a kind of micropower of the present invention, described reflector and receiver at same iron cage net build-in test, be to utilize the carrier signal of reflector to be higher than the carrier signal method of the no-load signal of same frequency victim emitter, make the carrier signal in the iron cage net not disturbed, and be received the device decoding.
The method of testing of shortwave frequency modulation type digital radio under a kind of micropower of the present invention, the digital signal of described reflector, identical with the frequency of the FM signal of victim emitter, and FM signal intensity is during greater than digital signal, and digital frequency-modulation signal can't effectively be decoded.
The testing apparatus of shortwave frequency modulation type digital radio under a kind of micropower of the present invention comprises reflector and receiver, victim emitter and the iron cage net of measured object; Described victim emitter is identical with the tranmitting frequency of the reflector of measured object; This victim emitter is made of frequency modulating circuit, crystal oscillation and the frequency regulating circuit, power adjusting circuit, power output circuit and the transmitting antenna that link to each other successively; Described iron cage net is the cage body of an iron netted inside and outside electric wave signal of cage body of can decaying.
The testing apparatus and the method for testing of shortwave frequency modulation type digital radio under the micropower of the present invention, can reach the function of existing testing apparatus and method of testing, can exempt carrying, the strange land test of test product again, effectively shorten man-hour and reduce human cost, also can significantly reduce the cost of testing apparatus, and save the available confined space of factory.
Description of drawings
Fig. 1 is for now using the flow chart of method of testing;
Fig. 2 is an anomalous mode interference principle schematic diagram of the present invention;
Fig. 3 is iron cage net constructing stereo figure of the present invention;
Fig. 4 is the production test flow chart of the embodiment of the invention 1;
Fig. 5 is the production test flow chart of the embodiment of the invention 2;
Fig. 6 is the production test flow chart of the embodiment of the invention 3;
Fig. 7 is the circuit block diagram of victim emitter of the present invention.
The figure number simple declaration:
1 first station, 2 isolation wards
3 second stations, 4 packings
10 measured object first, 20 measured object second
30 iron cage nets, 40 interference sources, i.e. victim emitter
41 frequency modulating circuit, 42 crystal oscillations and frequency regulating circuit
43 power adjusting circuits, 44 power output circuits
45 transmitting antennas
Embodiment
Below in conjunction with embodiment, and conjunction with figs., the testing apparatus and the method for testing of shortwave frequency modulation type digital radio under the micropower of the present invention is described further.
Referring to Fig. 2.This figure is an anomalous mode interference principle schematic diagram of the present invention.As shown in the figure: the present invention is with measured object first 10 on the production line and measured object second 20, distinctly put into iron cage net 30 (this iron cage net as shown in Figure 3, it is an iron netted cage body, the inside and outside electric wave signal of cage body of can decaying) in, between two stations, be provided with one identical then with the transmitter frequency of measured object first 10, second 20, but the transmitting set of the carrier signal of no-load signal, use and form an interference source 40, and make its emission electric wave phase mutual interference, make measured object first 10, second 20 in iron cage net 30, obtain correct and effectively test; This interference source 40 is a victim emitter (as shown in Figure 7), Fig. 7 is the FM FM circuit calcspar of a victim emitter, and it is made of frequency modulating circuit 41, crystal oscillation and the frequency regulating circuit 42, power adjusting circuit 43, power output circuit 44 and the transmitting antenna 45 that link to each other successively; Wherein, this frequency modulating circuit 41, be in order to the scope that frequency modulating to is suitable, and restriction crystal oscillation and frequency regulating circuit 42 vibrate frequency in the scope, and can adjust emending frequency simultaneously, it is fallen within the more accurate scope, the power of this frequency of now will be decided on power adjusting circuit 43, in general if power is less, and relative also shorter of the distance that its width of cloth is penetrated, otherwise, if power is bigger, relative also long of the distance that its width of cloth is penetrated is after the intensity of power is adjusted, just can utilize power output circuit 44 to see through transmitting antenna 45, with same frequency but the carrier transmit of no-load signal go out; This victim emitter, be the carrier signal strength that utilizes the no-load signal frequency approach greater than the carrier signal that carrier wave is arranged, in order to produce destructive interference, each group of receivers can't be decoded other signals, and at the reflector and the receiver of same iron cage net 30 build-in tests, then utilize the carrier signal of reflector to be higher than the carrier signal method of the no-load signal of same frequency victim emitter, make the carrier signal in the iron cage net 30 not disturbed, and be received the device decoding.
When using described device of the present invention, make this interference source 40 continue the signal of the carrier wave of emission no-load signal, and reflector that 40 emitted power of this interference source generally all will respectively be organized is low, to avoid interference the original receiver of each group, and the carrier signal of the original emission of each group is if exceed corresponding receiver scope, can be because of the short relation of power small distance, carrier signal can be died down earlier when arriving the receiver of other groups, be located at the interference source 40 between each group this moment, the carrier signal that the power of the carrier signal of the no-load signal that its width of cloth penetrates can have been decayed greater than power, and owing to the reason that is same frequency, make the carrier signal of high-power no-load signal can replace the little carrier signal of effect, just form the situation of so-called lid platform, by this, to prevent respectively to organize the electric wave that the reflector institute width of cloth penetrates, received by the receiver of his group, make the wireless device of respectively organizing same frequency can be, but under the short situation of standoff distance, can reach the purpose of normally testing without interruption equally at the same space.Moreover, the carrier signal of the reflector of test is a digital signal, and the carrier signal of the no-load signal of victim emitter is a FM signal, if digital signal is identical with the frequency of FM signal, and FM signal intensity is during greater than digital signal, and this digital frequency-modulation signal can't effectively be decoded.
The present invention has utilized the anomalous mode interference principle of electromagnetic radiation and the characteristic of shortwave, so-called anomalous mode disturbs, be meant a non-interference source that is produced by measured object itself, if angle faces speech with measured object first 10, measured object second 20 all belongs to anomalous mode with interference source 40 and disturbs, and the purpose of interference source 40 is exactly to upset the electric wave signal of measured object second 20, if with regard to measured object second 20, this interference source 40 will be upset the electric wave signal of measured object first 10 exactly;
Moreover described shortwave, its wavelength are 10 meters to 75 meters, the frequency range scope radio wave at 4MHZ to 30MHZ, its to the penetration power of the metal ultrashort wave shorter, utmost point ultrashort wave than wavelength come poor, but that the long wave longer than wavelength, medium wave, intermediate waves come is good.
Embodiment 1.
Referring to Fig. 4.This figure is the production test flow chart of the embodiment of the invention 1.As shown in Figure 4: semi-finished product test first station and finished product test second station in production line, respectively the reflector and the receiver of measured object are inserted in the iron cage net 30 with the wire netting formation, the tranmitting frequency of described reflector is identical, though and two stations have a bit of distance apart, and the radio wave attenuation that iron cage net 30 can be penetrated the external width of cloth in the cage again, but effect is limited, first, second two stations still can the phase mutual interference, so, another same frequency must be set between two stations, but the victim emitter of the carrier wave of no-load signal disturbs, when two testing stations are tested simultaneously, the radio wave attenuation that this iron cage net 30 can be penetrated the external width of cloth earlier, and electric wave that again can disturbed reflector is hindered and damaged, and this electric wave after hindering and damaging, before arriving another receiver, can be given decay once again by iron cage net 30 again, and covered by the electric wave in the iron cage net 30, and this electric wave is under the situation of the carrier wave that is attenuated the no-load signal, naturally be not to be received device to decode, and then reach the effect that comprehensively prevents two adjacent testing station phase mutual interference.
If quickening test speed, or between the testing station, increased other work station, in the hope of increasing the quantity of finished product, usually all can be at the semi-finished product station and the finished product station increase the digital test station simultaneously.
Embodiment 2 embodiment (as shown in Figure 5) for a victim emitter respectively being set between with adjacent testing station, the same stations two at station at two, same station described herein is meant the identical station of frequency that the reflector of the measured object in the testing station is launched; Embodiment 3 is for disturbing the embodiment (as shown in Figure 6) of reflector respectively being provided with 1,000 more than two between with the adjacent tester in the same station two at station; Embodiment 2-3 also all can reach the effect that comprehensively prevents with station two adjacent testing station phase mutual interference.
Though preferred embodiment of the present invention as mentioned above, be not in order to limit practical range of the present invention.
Claims (5)
1, the method for testing of shortwave frequency modulation type digital radio under a kind of micropower, it is characterized in that: on production line, be provided with at least two testing stations, an iron cage net that can hold measured object and reflector and receiver is established in each testing station, be provided with again between adjacent two iron cage nets one with described reflector with frequently but the victim emitter of the carrier wave of no-load signal; When two testing stations are tested simultaneously, the radio wave attenuation that this iron cage net is penetrated the external width of cloth earlier, and electric wave that again can disturbed reflector is hindered and damaged, and this electric wave after hindering and damaging, before arriving another receiver, can be given decay once again by iron cage net again, and be covered, and this electric wave is under the situation of the carrier wave that is attenuated the no-load signal by the electric wave in the iron cage net, naturally be not to be received device to decode, and then reach the effect that comprehensively prevents two adjacent testing station phase mutual interference.
2, method of testing according to claim 1, it is characterized in that: described victim emitter, for the carrier signal strength that utilizes the no-load signal frequency approach,, the adjacent reception device can't be decoded other signals in order to produce destructive interference greater than carrier signal.
3, according to claim 1 a described method of testing, it is characterized in that: at the reflector and the receiver of same iron cage net build-in test, be to utilize the carrier signal of reflector to be higher than the carrier signal method of the no-load signal of same frequency victim emitter, make the carrier signal in the iron cage net not disturbed, and be received the device decoding.
4, according to claim 1 a described method of testing, it is characterized in that: the digital signal of described reflector, identical with the frequency of the FM signal of victim emitter, and FM signal intensity is during greater than digital signal, and digital frequency-modulation signal can't effectively be decoded.
5, a kind of testing apparatus of realizing the described method of testing of claim 1 comprises reflector and receiver, victim emitter and the iron cage net of measured object; It is characterized in that: described victim emitter is identical with the tranmitting frequency of the reflector of measured object; This victim emitter is made of frequency modulating circuit, crystal oscillation and the frequency regulating circuit, power adjusting circuit, power output circuit and the transmitting antenna that link to each other successively; Described iron cage net is the cage body of an iron netted inside and outside electric wave signal of cage body of can decaying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02102486A CN1433165A (en) | 2002-01-18 | 2002-01-18 | Measurement device and method for micropower short-wave FM radio set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02102486A CN1433165A (en) | 2002-01-18 | 2002-01-18 | Measurement device and method for micropower short-wave FM radio set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1433165A true CN1433165A (en) | 2003-07-30 |
Family
ID=27627579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02102486A Pending CN1433165A (en) | 2002-01-18 | 2002-01-18 | Measurement device and method for micropower short-wave FM radio set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1433165A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1848712B (en) * | 2005-04-11 | 2011-06-15 | 智易科技股份有限公司 | Testing system and testing method for radio apparatus |
| CN107632217A (en) * | 2017-09-03 | 2018-01-26 | 电子科技大学 | A kind of device for detecting and tracking at a distance for electromagnetic interference source |
| CN112671482A (en) * | 2020-12-17 | 2021-04-16 | 上海东软载波微电子有限公司 | Wireless module testing method and device |
-
2002
- 2002-01-18 CN CN02102486A patent/CN1433165A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1848712B (en) * | 2005-04-11 | 2011-06-15 | 智易科技股份有限公司 | Testing system and testing method for radio apparatus |
| CN107632217A (en) * | 2017-09-03 | 2018-01-26 | 电子科技大学 | A kind of device for detecting and tracking at a distance for electromagnetic interference source |
| CN107632217B (en) * | 2017-09-03 | 2020-03-31 | 电子科技大学 | Device for electromagnetic interference source detection and remote tracking |
| CN112671482A (en) * | 2020-12-17 | 2021-04-16 | 上海东软载波微电子有限公司 | Wireless module testing method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102255119B (en) | Projected artificial magnetic mirror | |
| Gans et al. | Outdoor BLAST measurement system at 2.44 GHz: Calibration and initial results | |
| US5845220A (en) | Communication method and apparatus with signals comprising scalar and vector potentials without electromagnetic fields | |
| AU3986900A (en) | High-precision measuring method and apparatus | |
| TW366673B (en) | Radio-station for mobile communication system and method to select a sending device | |
| CN113964493B (en) | Low-frequency mechanical antenna based on mixed body model source | |
| CN107888321A (en) | A kind of mould division multiple access method based on OAM | |
| Barr et al. | ELF and VLF wave generation by HF heating: A comparison of AM and CW techniques | |
| CN1433165A (en) | Measurement device and method for micropower short-wave FM radio set | |
| NO20016059L (en) | Method and apparatus for producing full or partial transparency in a material | |
| CN117741285A (en) | Method for reducing reflection of multi-feed reverberation room antenna | |
| JP3793104B2 (en) | Test method and test jig for frequency modulation digital radio using short wave as carrier with weak transmission power | |
| CN2686219Y (en) | Multipath emulation system | |
| Tulupov et al. | Coverage impact of reconfigurable intelligent surfaces in 6G mobile networks | |
| US11848715B2 (en) | Device for testing antenna module comprising plurality of antenna elements | |
| RU2022904C1 (en) | Method and system for transmission and reception of information through communication line in mine shaft | |
| CN201919000U (en) | Water wireless communication monitoring and direction finding system | |
| Yelizarov et al. | Monitoring of RF-Field Strength in the Environment by Mobile Telecommunications in the Moscow | |
| RU2248075C1 (en) | Loop antenna | |
| CN117749287B (en) | Phased array antenna calibration device and method | |
| Helliwell | A Discussion on the early days of ionospheric research and the theory of electric and magnetic waves in the ionosphere and magnetosphere-Coherent vlf waves in the magnetosphere | |
| CN110299951A (en) | A kind of phase alignment and device | |
| DE60231818D1 (en) | MODULATOR FOR ELECTROMAGNETIC SIGNALS SOLD OUT OF A CONTACTLESS TRANSMITTER / RECEIVER SYSTEM | |
| CN1684393A (en) | High efficiency sub-orbital high altitude telecommunications system | |
| RU2353942C1 (en) | Installation for measurement of electromagnet field intensity flux density |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |