CN105635723A - Front-end system, system and method for testing CMMB product signal reception performance - Google Patents
Front-end system, system and method for testing CMMB product signal reception performance Download PDFInfo
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- CN105635723A CN105635723A CN201410613077.6A CN201410613077A CN105635723A CN 105635723 A CN105635723 A CN 105635723A CN 201410613077 A CN201410613077 A CN 201410613077A CN 105635723 A CN105635723 A CN 105635723A
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Abstract
The application discloses a front-end system, system and method for testing the CMMB product signal reception performance. The front-end system comprises a program signal source for generating and outputting CMMB baseband signals of one or more sets of programs; an actuator connected with the program signal source and used for modulating the CMMB baseband signals into CMMB frequency band signals; an attenuator connected with the actuator and used for introducing predetermined attenuation to the CMMB frequency band signals; and an outdoor transmitting antenna connected with the attenuator and used for transmitting the CMMB frequency band signals after the introduction of the attenuation, so as to achieve the test of signal reception performance of CMMB products.
Description
Technical field
The present invention relates to CMMB technical field, more particularly, it relates to the test front end system of CMMB product signal receptivity, system and method.
Background technology
CMMB (ChinaMobileMultimediaBroadcasting, China Mobile multimedia broadcasting), is commonly called as mobile TV. Described mobile TV emerges for a long time, but the signal receiving performance of the CMMB product can different batches produced due to the difference in product design, production technology has a huge impact, therefore, the signal receiving performance of CMMB product in the different production batch of test, just can investigate out, at the production initial stage, the reason causing product quality very different rapidly, thus the negative effect brought after avoiding launch.
Summary of the invention
In view of this, the present invention provides a kind of and tests the front end system of CMMB product signal receptivity, system and method, to realize the test of the signal receiving performance to CMMB product.
A kind of front end system testing CMMB product signal receptivity, including:
Programme signal source, for generating and export the CMMB baseband signal of one or more sets programs;
The activator being connected with described programme signal source, being used for described CMMB modulates baseband signals is CMMB band signal;
The attenuator being connected with described activator, for introducing predetermined decay to described CMMB band signal;
And the outdoor transmitting antenna being connected with described attenuator, for launching the CMMB band signal after introducing predetermined decay.
A kind of system testing CMMB product signal receptivity, including terminal system and above-mentioned front end system, wherein:
Described terminal system and test prototype are in same test position, and the introducing sent for receiving and process described front end system makes a reservation for the CMMB band signal after decay.
Wherein, described terminal system is contrast machine.
Wherein, described terminal system is multi-functional field intensity indicator.
Wherein, described terminal system includes multi-functional field intensity indicator and contrast machine.
A kind of method testing CMMB product signal receptivity, is applied to the system adopting contrast machine as the test CMMB product signal receptivity of terminal system, and described method of testing includes:
Regulate the attenuation of described attenuator;
Judge whether described test prototype occurs breaking prior to described contrast machine;
If described test prototype occurs breaking prior to described contrast machine, it is determined that the signal receiving performance of described test prototype is not up to standard, otherwise it is judged to up to standard.
A kind of method testing CMMB product signal receptivity, is applied to the system adopting multi-functional field intensity indicator as the test CMMB product signal receptivity of terminal system, and described method of testing includes:
Regulate the attenuation of described attenuator;
When breaking occurs in described test prototype, obtain the attenuation of the output level value of described activator, described attenuator and the output data of described multi-functional field intensity indicator;
Judge whether the output data of described multi-functional field intensity indicator meet established standards when the attenuation of described attenuator and the output level value of described activator are certain;
If the output data fit established standards of described multi-functional field intensity indicator, it is determined that the signal receiving performance of described test prototype is up to standard, otherwise it is judged to not up to standard.
Wherein, the output data of described multi-functional field intensity indicator include: the level value of CMMB band signal that described multi-functional field intensity indicator is measured and exported, the bit error rate.
Wherein, the output data fit established standards of described multi-functional field intensity indicator, including: the level value of CMMB band signal that described multi-functional field intensity indicator is measured and exported, the bit error rate are all without departing from the fluctuation range set.
A kind of method testing CMMB product signal receptivity, is applied to the system adopting contrast machine and multi-functional field intensity indicator as the test CMMB product signal receptivity of terminal system, and described method of testing includes:
Regulate the attenuation of described attenuator;
Judge whether described test prototype occurs breaking prior to described contrast machine;
If described test prototype occurs breaking prior to described contrast machine, it is determined that the signal receiving performance of described test prototype is not up to standard; Otherwise, it is determined that for up to standard and when breaking occurs in described test prototype, obtain the output data of the output level value of described activator, the attenuation of described attenuator and described multi-functional field intensity indicator.
Can be seen that from above-mentioned technical scheme, the present invention utilizes programme signal source, activator, front end system built by attenuator and outdoor transmitting antenna, owing to described front end system can launch the CMMB band signal after introducing predetermined decay, by adjusting the attenuation of attenuator, just can progressively change the reception condition of the terminal system including test prototype, foundation as subsequent analysis, it is achieved thereby that whether the signal receiving performance accurately testing out test prototype under open environment is up to standard, improve the work efficiency of quality testing department, ensure that product quality.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of front end system structural representation testing CMMB product signal receptivity disclosed in the embodiment of the present invention;
Fig. 2 a is a kind of system structure schematic diagram testing CMMB product signal receptivity disclosed in the embodiment of the present invention;
Fig. 2 b is the system structure schematic diagram of the embodiment of the present invention another test CMMB product signal receptivity disclosed;
Fig. 2 c is the system structure schematic diagram of the embodiment of the present invention another test CMMB product signal receptivity disclosed;
Fig. 3 a is a kind of method flow diagram testing CMMB product signal receptivity disclosed in the embodiment of the present invention;
Fig. 3 b is the method flow diagram of the embodiment of the present invention another test CMMB product signal receptivity disclosed;
Fig. 3 c is the method flow diagram of the embodiment of the present invention another test CMMB product signal receptivity disclosed.
Detailed description of the invention
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 clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Referring to Fig. 1, the embodiment of the invention discloses a kind of front end system testing CMMB product signal receptivity, to realize the test of the signal receiving performance to CMMB product, including:
Programme signal source 101, for generating and export the CMMB baseband signal of one or more sets programs;
The activator 102 being connected with programme signal source 101, for being CMMB band signal by described CMMB modulates baseband signals, can frequency hopping to required any frequency, do not limit to;
The attenuator 103 being connected with activator 102, for introducing predetermined decay to described CMMB band signal;
And the outdoor transmitting antenna 104 being connected with attenuator 103, for launching the CMMB band signal after introducing predetermined decay.
The present embodiment utilizes programme signal source 101, activator 102, attenuator 103 and outdoor transmitting antenna 104 to build front end system, owing to this front end system can launch the CMMB band signal after introducing predetermined decay, by adjusting the attenuation of attenuator 103, just can progressively change the reception condition of the terminal system including test prototype, foundation as subsequent analysis, it is achieved thereby that whether the signal receiving performance accurately testing out test prototype under open environment is up to standard, improve the work efficiency of quality testing department, it is ensured that product quality.
Corresponding, the embodiment of the invention also discloses a kind of system testing CMMB product signal receptivity, including terminal system and above-mentioned front end system; Described terminal system and test prototype are in same test position, and the introducing sent for receiving and process described front end system makes a reservation for the CMMB band signal after decay, as subsequent analysis foundation.
Concrete, referring to Fig. 2 a, described terminal system can be in the contrast machine 202 of same test position with test prototype 201; The present embodiment selection signal receiving performance is up to standard, sensitivity, by contrast test, the CMMB product model machine machine as a comparison that capacity of resisting disturbance is strong, for quickly determining that whether the signal receiving performance of test prototype 201 is up to standard. Referring to Fig. 2 b, described terminal system can also be multi-functional field intensity indicator 203; Multi-functional field intensity indicator 203 be a kind of can the instrument of the information such as measured signal level value, bit error rate in real time, it may be achieved the quantitative analysis to test prototype 201 signal receiving performance. Certainly, referring to Fig. 2 c, described terminal system can also include contrast machine 202 and multi-functional field intensity indicator 203 simultaneously.
Referring to Fig. 3 a, the embodiment of the invention discloses a kind of method testing CMMB product signal receptivity, be applied to the system shown in Fig. 2 a, the method includes:
Step 301: the attenuation of regulated attenuator 103;
Step 302: judge whether test prototype 201 occurs breaking prior to contrast machine 202; If test prototype 201 occurs breaking prior to contrast machine 202, enter step 303; Otherwise enter step 304;
Step 303: the signal receiving performance of discriminating test model machine 201 is not up to standard, this test terminates.
Step 304: the signal receiving performance of discriminating test model machine 201 is up to standard, this test terminates.
Under open environment spacious, quiet (under this test environment, signal level value, error rate that front end system is launched all should meet established standards, to ensure electromagnetic interference less in environment), contrast machine 202 and test prototype 201 are positioned over same test position by the present embodiment, and the attenuation of continuous regulated attenuator 103 is to change the intensity of the CMMB band signal that contrast machine 202 and test prototype 201 receive; Occur breaking owing to CMMB product that signal receiving performance is more strong is more late, therefore by the contrastive test model machine 201 video playing quality compared to contrast machine 202, can the signal receiving performance of quick discriminating test model machine 201 whether up to standard.
Referring to Fig. 3 b, the method that the embodiment of the invention discloses another test CMMB product signal receptivity, being applied to the system shown in Fig. 2 b, the method includes:
Step 311: the attenuation of regulated attenuator 103;
Step 312: judge whether test prototype 201 occurs breaking; When breaking occurs in test prototype 201, enter step 313; Otherwise return step 311;
Step 313: obtain the attenuation of the output level value of activator 102, attenuator 103 and the output data of multi-functional field intensity indicator 203;
Wherein, the output data of multi-functional field intensity indicator 203 include the level value of CMMB band signal, the bit error rate that multi-functional field intensity indicator 203 is measured and exported;
Step 314: judge whether the output data of multi-functional field intensity indicator 203 meet established standards when the attenuation of attenuator 103 and the output level value of activator 102 are certain; If the output data fit established standards of multi-functional field intensity indicator 203, enter step 315, otherwise enter step 316;
Wherein, the output data fit established standards of multi-functional field intensity indicator 203, including: the level value of CMMB band signal that multi-functional field intensity indicator 203 is measured and exported, the bit error rate are all without departing from the fluctuation range set;
Step 315: the signal receiving performance of discriminating test model machine 201 is up to standard, this test terminates.
Step 316: the signal receiving performance of discriminating test model machine 201 is not up to standard, this test terminates.
Under open environment spacious, quiet, multi-functional field intensity indicator 203 is positioned over same test position with test prototype 201 by the present embodiment, and the attenuation of continuous regulated attenuator 103 is to change the intensity of the CMMB band signal that multi-functional field intensity indicator 203 receives with test prototype 201, when the attenuation of attenuator 103 and the output level value of activator 102 are certain, if (level value such as CMMB band signal is not less than 32dB, the bit error rate less than 1 to the output data fit evaluation standard set in advance of multi-functional field intensity indicator 203-5), illustrate that the signal receiving performance being in the test prototype 201 of same test position with it is up to standard.
Compared to the contrast test that a upper embodiment adopts, the present embodiment adopts the conclusion that obtains of quantitative analysis to have numeral support, therefore more cogency; And more convenient staff is directly based upon these digitized test results investigates out the reason causing product quality very different, thus the negative effect brought after avoiding launch.
Referring to Fig. 3 c, the method that the embodiment of the invention discloses another test CMMB product signal receptivity, being applied to the system shown in Fig. 2 c, the method includes:
Step 321: the attenuation of regulated attenuator 103;
Step 322: judge whether test prototype 201 occurs breaking prior to contrast machine 202; When test prototype 201 occurs breaking prior to contrast machine 202, enter step 323; Otherwise enter step 324;
Step 323: the signal receiving performance of discriminating test model machine 201 is not up to standard, this test terminates.
Step 324; The signal receiving performance of discriminating test model machine 201 is up to standard; And when breaking occurs in test prototype 201, obtaining the attenuation of the output level value of activator 102, attenuator 103 and the output data of multi-functional field intensity indicator 203, this test terminates.
Whether the present embodiment is up to standard initially with the signal receiving performance of contrast test quick discriminating test model machine, afterwards the test prototype that signal receiving performance is not up to standard is carried out quantitative analysis, the reason causing product quality very different is investigated out to facilitate staff to be directly based upon these digitized test results, thus the negative effect brought after avoiding launch.
In sum, the present invention utilizes programme signal source, activator, attenuator and outdoor transmitting antenna to build front end system, owing to described front end system can launch the CMMB band signal after introducing predetermined decay, by adjusting the attenuation of attenuator, just can progressively change the reception condition of the terminal system including test prototype, foundation as subsequent analysis, it is achieved thereby that whether the signal receiving performance accurately testing out test prototype under open environment is up to standard, improve the work efficiency of quality testing department, it is ensured that product quality.
In this specification, each embodiment adopts the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually referring to.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention. The multiple amendment of these embodiments be will be apparent from for those skilled in the art, and generic principles defined herein when without departing from the spirit or scope of the embodiment of the present invention, can realize in other embodiments. Therefore, the embodiment of the present invention is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (10)
1. the front end system testing CMMB product signal receptivity, it is characterised in that including:
Programme signal source, for generating and export the CMMB baseband signal of one or more sets programs;
The activator being connected with described programme signal source, being used for described CMMB modulates baseband signals is CMMB band signal;
The attenuator being connected with described activator, for introducing predetermined decay to described CMMB band signal;
And the outdoor transmitting antenna being connected with described attenuator, for launching the CMMB band signal after introducing predetermined decay.
2. the system testing CMMB product signal receptivity, it is characterised in that include the front end system described in terminal system and claim 1, wherein:
Described terminal system and test prototype are in same test position, and the introducing sent for receiving and process described front end system makes a reservation for the CMMB band signal after decay.
3. system according to claim 2, it is characterised in that described terminal system is contrast machine.
4. system according to claim 2, it is characterised in that described terminal system is multi-functional field intensity indicator.
5. system according to claim 2, it is characterised in that described terminal system includes multi-functional field intensity indicator and contrast machine.
6. the method testing CMMB product signal receptivity, it is characterised in that being applied to the system described in claim 3, described method of testing includes:
Regulate the attenuation of described attenuator;
Judge whether described test prototype occurs breaking prior to described contrast machine;
If described test prototype occurs breaking prior to described contrast machine, it is determined that the signal receiving performance of described test prototype is not up to standard, otherwise it is judged to up to standard.
7. the method testing CMMB product signal receptivity, it is characterised in that being applied to the system described in claim 4, described method of testing includes:
Regulate the attenuation of described attenuator;
When breaking occurs in described test prototype, obtain the attenuation of the output level value of described activator, described attenuator and the output data of described multi-functional field intensity indicator;
Judge whether the output data of described multi-functional field intensity indicator meet established standards when the attenuation of described attenuator and the output level value of described activator are certain;
If the output data fit established standards of described multi-functional field intensity indicator, it is determined that the signal receiving performance of described test prototype is up to standard, otherwise it is judged to not up to standard.
8. method according to claim 7, it is characterised in that the output data of described multi-functional field intensity indicator include: the level value of CMMB band signal that described multi-functional field intensity indicator is measured and exported, the bit error rate.
9. method according to claim 8, it is characterised in that the output data fit established standards of described multi-functional field intensity indicator, including:
The level value of CMMB band signal that described multi-functional field intensity indicator is measured and exported, the bit error rate are all without departing from the fluctuation range set.
10. the method testing CMMB product signal receptivity, it is characterised in that being applied to the system described in claim 5, described method of testing includes:
Regulate the attenuation of described attenuator;
Judge whether described test prototype occurs breaking prior to described contrast machine;
If described test prototype occurs breaking prior to described contrast machine, it is determined that the signal receiving performance of described test prototype is not up to standard; Otherwise, it is determined that for up to standard and when breaking occurs in described test prototype, obtain the output data of the output level value of described activator, the attenuation of described attenuator and described multi-functional field intensity indicator.
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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. |