CN105635723B - Test front end system, the system and method for CMMB product signal receptivities - Google Patents
Test front end system, the system and method for CMMB product signal receptivities Download PDFInfo
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Abstract
This application discloses a kind of front end system of test CMMB product signal receptivities, system and method, the wherein front end system includes：Programme signal source, the CMMB baseband signals for generating and exporting one or more sets programs；The driver being connected with the programme signal source, for being CMMB band signals by the CMMB modulates baseband signals；The attenuator being connected with the driver, for introducing predetermined decay to the CMMB band signals；And the outdoor transmitting antenna being connected with the attenuator, for launching the CMMB band signals introduced after predetermined decay, to realize the test of the signal receiving performance to CMMB products.
Description
Technical field
The present invention relates to CMMB technical fields, more specifically to the front end of test CMMB product signal receptivities
System, system and method.
Background technology
CMMB (China Mobile Multimedia Broadcasting, China Mobile Multimedia Broadcasting), is commonly called as hand
Electromechanics is regarded.The mobile TV emerges for a long time, but because the difference in product design, production technology can be produced to different batches
The signal receiving performance of the CMMB products come has a huge impact, therefore, tests the letter of CMMB products in different production batch
Number receptivity, it becomes possible to which rapidly being investigated out in producing initial stage causes the reason for product quality is very different, so as to avoid production
The negative effect brought after product listing.
The content of the invention
In view of this, the present invention provides a kind of front end system of test CMMB product signal receptivities, system and method,
To realize the test of the signal receiving performance to CMMB products.
A kind of front end system of test CMMB product signal receptivities, including：
Programme signal source, the CMMB baseband signals for generating and exporting one or more sets programs；
The driver being connected with the programme signal source, for the CMMB modulates baseband signals to be believed for CMMB frequency bands
Number；
The attenuator being connected with the driver, for introducing predetermined decay to the CMMB band signals；
And the outdoor transmitting antenna being connected with the attenuator, for launching the CMMB frequency bands letter introduced after predetermined decay
Number.
A kind of system of test CMMB product signal receptivities, including terminal system and above-mentioned front end system, wherein：
The terminal system is in same test position with test prototype, is sent for receiving and handling the front end system
The predetermined decay of introducing after CMMB band signals.
Wherein, the terminal system is contrast machine.
Wherein, the terminal system is multi-functional field intensity meter.
Wherein, the terminal system includes multi-functional field intensity meter and contrast machine.
A kind of method of test CMMB product signal receptivities, applied to using test of the contrast machine as terminal system
The system of CMMB product signal receptivities, the method for testing includes：
Adjust the attenuation of the attenuator；
Judge whether the test prototype breaks prior to the contrast machine；
If the test prototype is broken prior to the contrast machine, the signal receiving performance of the test prototype is judged not
It is up to standard, otherwise it is determined as up to standard.
A kind of method of test CMMB product signal receptivities, terminal system is used as applied to using multi-functional field intensity meter
Test CMMB product signal receptivities system, the method for testing includes：
Adjust the attenuation of the attenuator；
When the test prototype is broken, output level value, the decay of the attenuator of the driver are obtained
Amount, and the multi-functional field intensity meter output data；
Judge in the case where the attenuation of the attenuator and the output level value of the driver are certain, it is described many
Whether the output data of function field intensity meter meets established standardses；
If the output data of the multi-functional field intensity meter meets established standardses, the signal acceptance of the test prototype is judged
Can be up to standard, otherwise it is determined as not up to standard.
Wherein, the output data of the multi-functional field intensity meter includes：The CMMB that the multi-functional field intensity meter is measured and exported
The level value of band signal, the bit error rate.
Wherein, the output data of the multi-functional field intensity meter meets established standardses, including：The multi-functional field intensity meter measurement
And export the level values of CMMB band signals, the bit error rate is without departing from the fluctuation range of setting.
A kind of method of test CMMB product signal receptivities, applied to using contrast machine and multi-functional field intensity meter conduct
The system of the test CMMB product signal receptivities of terminal system, the method for testing includes：
Adjust the attenuation of the attenuator；
Judge whether the test prototype breaks prior to the contrast machine；
If the test prototype is broken prior to the contrast machine, the signal receiving performance of the test prototype is judged not
It is up to standard；Otherwise, it is determined that being up to standard and when the test prototype is broken, output level value, the institute of the driver are obtained
State the attenuation of attenuator and the output data of the multi-functional field intensity meter.
It can be seen from above-mentioned technical scheme that, the present invention utilizes programme signal source, driver, attenuator and outdoor transmitting
Antenna builds front end system, because the front end system can launch the CMMB band signals introduced after predetermined decay, by adjusting
The attenuation of whole attenuator, it is possible to the reception condition of the terminal system including test prototype is altered in steps, as follow-up
The foundation of analysis, it is achieved thereby that whether the accurate signal receiving performance for testing out test prototype is up to standard under open environment,
Improve the operating efficiency of quality testing department, it is ensured that product quality.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of front end system structural representation of test CMMB product signal receptivities disclosed in the embodiment of the present invention
Figure；
Fig. 2 a are a kind of system structure diagram of test CMMB product signal receptivities disclosed in the embodiment of the present invention；
Fig. 2 b are the system architecture signal of another disclosed test CMMB product signal receptivity of the embodiment of the present invention
Figure；
Fig. 2 c are the system architecture signal of another disclosed test CMMB product signal receptivity of the embodiment of the present invention
Figure；
Fig. 3 a are a kind of method flow diagram of test CMMB product signal receptivities disclosed in the embodiment of the present invention；
Fig. 3 b are the method flow diagram of another disclosed test CMMB product signal receptivity of the embodiment of the present invention；
Fig. 3 c are the method flow diagram of another disclosed test CMMB product signal receptivity of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Referring to Fig. 1, the embodiment of the invention discloses a kind of front end system of test CMMB product signal receptivities, with reality
Now to the test of the signal receiving performances of CMMB products, including：
Programme signal source 101, the CMMB baseband signals for generating and exporting one or more sets programs；
The driver 102 being connected with programme signal source 101, for the CMMB modulates baseband signals to be believed for CMMB frequency bands
Number, can frequency hopping to required any frequency, do not limit to；
The attenuator 103 being connected with driver 102, for introducing predetermined decay to the CMMB band signals；
And the outdoor transmitting antenna 104 being connected with attenuator 103, for launching the CMMB frequency bands introduced after predetermined decay
Signal.
Before the present embodiment is built using programme signal source 101, driver 102, attenuator 103 and outdoor transmitting antenna 104
End system, because the front end system can launch the CMMB band signals introduced after predetermined decay, by adjusting attenuator 103
Attenuation, it is possible to the reception condition of the terminal system including test prototype is altered in steps, as the foundation of subsequent analysis,
It is achieved thereby that whether the accurate signal receiving performance for testing out test prototype is up to standard under open environment, quality testing is improved
The operating efficiency of department, it is ensured that product quality.
Corresponding, the embodiment of the invention also discloses a kind of system of test CMMB product signal receptivities, including end
End system and above-mentioned front end system；The terminal system is in same test position with test prototype, for receiving and handling
CMMB band signals after the predetermined decay of introducing that the front end system is sent, are used as subsequent analysis foundation.
Specifically, referring to Fig. 2 a, the terminal system can be that the contrast of same test position is in test prototype 201
Machine 202；The present embodiment is from signal receiving performance is up to standard, sensitivity, and the CMMB products model machine of strong antijamming capability is as a comparison
Machine, for quickly determining whether the signal receiving performance of test prototype 201 is up to standard by contrast test.Referring to Fig. 2 b, the end
End system can also be multi-functional field intensity meter 203；Multi-functional field intensity meter 203 is that one kind being capable of signal of measuring in real time level value, mistake
The instrument of the information such as code check, can be achieved the quantitative analysis to the signal receiving performance of test prototype 201.Certainly, it is described referring to Fig. 2 c
Terminal system can also include contrast machine 202 and multi-functional field intensity meter 203 simultaneously.
Referring to Fig. 3 a, the embodiment of the invention discloses a kind of method of test CMMB product signal receptivities, it is applied to
System shown in Fig. 2 a, this method includes：
Step 301：The attenuation of regulated attenuator 103；
Step 302：Judge whether test prototype 201 breaks prior to contrast machine 202；If test prototype 201 is prior to right
Break than machine 202, into step 303；Otherwise step 304 is entered；
Step 303：The signal receiving performance of discriminating test model machine 201 is not up to standard, and this test terminates.
Step 304：The signal receiving performance of discriminating test model machine 201 is up to standard, and this test terminates.
Under spacious, quiet open environment (under the test environment, signal level value that front end system is launched, error
Rate should meet established standardses, to ensure less electromagnetic interference in environment), the present embodiment will contrast machine 202 and test specimens
Machine 201 is positioned over same test position, and the constantly attenuation of regulated attenuator 103 is to change contrast machine 202 and test prototype
The intensity of the 201 CMMB band signals received；Break because the stronger CMMB products of signal receiving performance are more late, therefore
Video playing quality by contrastive test model machine 201 compared to contrast machine 202, you can the letter of quick discriminating test model machine 201
Whether number receptivity is up to standard.
Referring to Fig. 3 b, the embodiment of the invention discloses the method for another test CMMB product signal receptivity, application
In the system shown in Fig. 2 b, this method includes：
Step 311：The attenuation of regulated attenuator 103；
Step 312：Judge whether test prototype 201 breaks；When test prototype 201 is broken, into step
313；Otherwise return to step 311；
Step 313：Obtain output level value, the attenuation of attenuator 103 of driver 102, and multi-functional field intensity meter
203 output data；
Wherein, the output data of multi-functional field intensity meter 203 includes the CMMB frequency bands that multi-functional field intensity meter 203 is measured and exported
The level value of signal, the bit error rate；
Step 314：Judge in the case where the attenuation of attenuator 103 and the output level value of driver 102 are certain,
Whether the output data of multi-functional field intensity meter 203 meets established standardses；If the output data of multi-functional field intensity meter 203 meets setting
Standard, into step 315, otherwise into step 316；
Wherein, the output data of multi-functional field intensity meter 203 meets established standardses, including：Multi-functional field intensity meter 203 is measured simultaneously
The level values of the CMMB band signals of output, the bit error rate are without departing from the fluctuation range of setting；
Step 315：The signal receiving performance of discriminating test model machine 201 is up to standard, and this test terminates.
Step 316：The signal receiving performance of discriminating test model machine 201 is not up to standard, and this test terminates.
Under spacious, quiet open environment, multi-functional field intensity meter 203 and test prototype 201 are positioned over by the present embodiment
Same test position, and the constantly attenuation of regulated attenuator 103 connects with changing multi-functional field intensity meter 203 with test prototype 201
The intensity of the CMMB band signals received, in the attenuation of attenuator 103 and the certain feelings of the output level value of driver 102
Under condition, if the output data of multi-functional field intensity meter 203 meets evaluation standard set in advance (such as level value of CMMB band signals
It is not less than 32dB, the bit error rate no more than 1-5), illustrate the signal acceptance with its test prototype 201 in same test position
Can be up to standard.
The contrast test used compared to a upper embodiment, the conclusion that the present embodiment is obtained using quantitative analysis has digital branch
Support, therefore more convincingness；And more convenient staff is directly based upon these digitized test results and investigated out and causes
The reason for product quality is very different, so as to avoid the negative effect brought after launch.
Referring to Fig. 3 c, the embodiment of the invention discloses the method for another test CMMB product signal receptivity, application
In the system shown in Fig. 2 c, this method includes：
Step 321：The attenuation of regulated attenuator 103；
Step 322：Judge whether test prototype 201 breaks prior to contrast machine 202；When test prototype 201 is prior to right
When breaking than machine 202, into step 323；Otherwise step 324 is entered；
Step 323：The signal receiving performance of discriminating test model machine 201 is not up to standard, and this test terminates.
Step 324；The signal receiving performance of discriminating test model machine 201 is up to standard；And when test prototype 201 is broken,
Obtain driver 102 output level value, the attenuation of attenuator 103, and multi-functional field intensity meter 203 output data, this
Secondary test terminates.
Whether the present embodiment is up to standard using the signal receiving performance of the quick discriminating test model machine of contrast test first, right afterwards
Signal receiving performance test prototype not up to standard carries out quantitative analysis, to facilitate staff to be directly based upon these digitized surveys
Test result, which is investigated out, causes the reason for product quality is very different, so as to avoid the negative effect brought after launch.
In summary, the present invention builds front end system using programme signal source, driver, attenuator and outdoor transmitting antenna
System, because the front end system can launch the CMMB band signals introduced after predetermined decay, by the decay for adjusting attenuator
Amount, it is possible to the reception condition of the terminal system including test prototype is altered in steps, as the foundation of subsequent analysis, so that
Realize under open environment whether the accurate signal receiving performance for testing out test prototype is up to standard, improve quality testing portion
The operating efficiency of door, it is ensured that product quality.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can in other embodiments be realized in the case where not departing from the spirit or scope of the embodiment of the present invention.Therefore,
The embodiment of the present invention is not intended to be limited to the embodiments shown herein, and be to fit to principles disclosed herein and
The consistent most wide scope of features of novelty.
Claims (2)
1. a kind of method of test CMMB product signal receptivities, it is characterised in that connect applied to test CMMB product signals
The system for receiving performance；The system includes terminal system and front end system；
The front end system includes：Programme signal source, the CMMB baseband signals for generating and exporting one or more sets programs；With
The connected driver in the programme signal source, for being CMMB band signals by the CMMB modulates baseband signals；Swash with described
The connected attenuator of device is encouraged, for introducing predetermined decay to the CMMB band signals；And the family being connected with the attenuator
Outer transmitting antenna, for launching the CMMB band signals introduced after predetermined decay；
The terminal system and test prototype are in same test position, and for receiving and handling, the front end system sends draws
Enter and make a reservation for the CMMB band signals after decay；The terminal system is contrast machine；
The method of testing includes：
Adjust the attenuation of the attenuator；
Judge whether the test prototype breaks prior to the contrast machine；
If the test prototype is broken prior to the contrast machine, judge that the signal receiving performance of the test prototype does not reach
Mark, is otherwise determined as up to standard.
2. a kind of method of test CMMB product signal receptivities, it is characterised in that connect applied to test CMMB product signals
The system for receiving performance；The system includes terminal system and front end system；
The front end system includes：Programme signal source, the CMMB baseband signals for generating and exporting one or more sets programs；With
The connected driver in the programme signal source, for being CMMB band signals by the CMMB modulates baseband signals；Swash with described
The connected attenuator of device is encouraged, for introducing predetermined decay to the CMMB band signals；And the family being connected with the attenuator
Outer transmitting antenna, for launching the CMMB band signals introduced after predetermined decay；
The terminal system and test prototype are in same test position, and for receiving and handling, the front end system sends draws
Enter and make a reservation for the CMMB band signals after decay；The terminal system includes multi-functional field intensity meter and contrast machine；
The method of testing includes：
Adjust the attenuation of the attenuator；
Judge whether the test prototype breaks prior to the contrast machine；
If the test prototype is broken prior to the contrast machine, judge that the signal receiving performance of the test prototype does not reach
Mark；Otherwise, it is determined that to be up to standard and when the test prototype is broken, the output level value, described of the driver is obtained
The output data of the attenuation of attenuator and the multi-functional field intensity meter.
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Effective date of registration: 20220908 Address after: 100010 8th floor, longfu building, No. 95, longfushi street, Dongcheng District, Beijing Patentee after: Beijing State Owned Financial Leasing Co.,Ltd. Address before: 100085, No. 3, No. 002, Section 1, building No. 3, 3rd floor, information industry base, Beijing, Haidian District Patentee before: BEIJING STARTIMES SOFTWARE TECHNOLOGY Co.,Ltd. |