CN211606538U - High-efficient satellite simulation test system - Google Patents
High-efficient satellite simulation test system Download PDFInfo
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- CN211606538U CN211606538U CN202020663496.1U CN202020663496U CN211606538U CN 211606538 U CN211606538 U CN 211606538U CN 202020663496 U CN202020663496 U CN 202020663496U CN 211606538 U CN211606538 U CN 211606538U
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- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 238000004088 simulation Methods 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 32
- 239000003990 capacitor Substances 0.000 claims description 33
- 238000011045 prefiltration Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000013522 software testing Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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Abstract
The utility model discloses a high-efficiency satellite simulation test system, which belongs to the technical field of link test systems and comprises a signal source, a power divider, an amplifying circuit, a prepositive filter circuit, an adjustable attenuator, a postpositive filter, a signal detection system and a signal output indicator lamp which are sequentially connected in series, wherein, firstly, the power divider distributes radio frequency signals emitted by the signal source into a plurality of signals, a plurality of signals are all calculated by the amplifying circuit to amplify the signals, then the signals in a certain frequency range are allowed to normally pass through under the action of the prepositive filter circuit, the signal of the other part of frequency is prevented from passing through, a good filtering effect is achieved, the strength of the signal is continuously adjusted through the adjustable attenuator, the one-to-one test mode of the conventional navigation positioning equipment is broken, the accuracy of the test result is ensured, and the test efficiency of the test system is improved.
Description
Technical Field
The utility model relates to a link test system technical field, more specifically say, relate to a high-efficient satellite simulation test system.
Background
With the increasing popularization of satellite navigation positioning products, the quality of the products is uneven, and the detection demand is larger and larger.
The existing test of navigation positioning equipment generally adopts a one-to-one test mode of a single link, namely, a set of satellite signal simulation test system and single tested equipment carry out data interaction to complete the test, the test efficiency is low, and the test requirement of increasing products can not be met far away, so that the single physical link increasingly becomes the performance bottleneck of a distributed system, and the single link can cause the unavailability of the whole system once failing, therefore, a test system with high integration level is needed, and a plurality of tested equipment can be tested simultaneously and parallelly.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
To the problem that exists among the prior art, the utility model aims to provide a high-efficient satellite simulation test system, it has broken the one-to-one test mode of navigation location class equipment in the past, when guaranteeing the test structure accuracy, has improved test system's efficiency of software testing.
2. Technical scheme
In order to solve the above problem, the utility model adopts the following technical scheme:
a high-efficiency satellite simulation test system comprises a signal source, a power divider, an amplifying circuit, a pre-filter circuit, an adjustable attenuator, a post-filter, a signal detection system and a signal output indicator lamp which are sequentially connected in series.
As a preferred scheme of the utility model, amplifier circuit includes first resistance R1, first electric capacity C1, operational amplifier U1 and second resistance R2, the output of ware is divided to the merit is connected with first resistance R1's input, first resistance R1's output is connected with operational amplifier U1's negative direction input, first electric capacity C1's output is connected with operational amplifier U1's positive direction input, operational amplifier U1's output is connected with second resistance R2's input.
As a preferred scheme of the utility model, the pre-filter circuit includes second electric capacity C2, third resistance R3, third electric capacity C3, fourth resistance R4 and fourth electric capacity C4, second electric capacity C2, third resistance R3 establish ties in proper order and constitute first series circuit, third electric capacity C3, fourth resistance R4 establish ties in proper order and connect the second series circuit, first series circuit and second series circuit are parallelly connected and constitute parallel circuit, second resistance R2's output and parallel circuit's input are connected, parallel circuit's output and fourth electric capacity C4's input are connected, fourth electric capacity C4's output is connected with the input of adjustable attenuator (5).
As a preferred scheme of the utility model, the post filter includes fifth resistance R5 and fifth electric capacity C5, the output of adjustable attenuator is connected with fifth resistance R5's input, fifth resistance R5's output is connected with fifth electric capacity C5's input, fifth electric capacity C5's output is connected with signal detection system's input.
As the utility model discloses a preferred scheme, signal detection system includes central processing unit, signal strength detection module and testing result output module all with central processing unit electric connection, electric connection between testing result output module and the signal output pilot lamp.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages of:
according to the scheme, the radio-frequency signals emitted by the signal source are distributed through the power divider to be distributed into multiple paths of signals, the signals are amplified through the operation of the amplifying circuit, then the signals in a certain frequency range are allowed to normally pass through the action of the front-end filter circuit, the signals of the other part of frequencies are prevented from passing through the front-end filter circuit, a good filtering action is achieved, the strength of the signals is continuously adjusted through the adjustable attenuator, the one-to-one test mode of the conventional navigation and positioning equipment is broken through, and the test efficiency of the test system is improved while the accuracy of the test result is guaranteed.
Drawings
Fig. 1 is a functional block diagram of an efficient satellite simulation test system according to the present invention;
FIG. 2 is a schematic diagram of the main circuit of the high-efficiency satellite simulation test system of the present invention;
fig. 3 is a functional block diagram of the signal detection system of the high-efficiency satellite simulation test system of the present invention.
The reference numbers in the figures illustrate:
the device comprises a signal source 1, a power divider 2, an amplifying circuit 3, a pre-filter circuit 4, an adjustable attenuator 5, a post-filter 6, a signal detection system 7 and a signal output indicator lamp 8.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
referring to fig. 1, a high-efficiency satellite simulation test system includes a signal source 1, a power divider 2, an amplifying circuit 3, a pre-filter circuit 4, an adjustable attenuator 5, a post-filter 6, a signal detection system 7, and a signal output indicator light 8, which are sequentially connected in series.
In this embodiment: the signal output end of the high-efficiency satellite simulation test system formed by the utility model is connected with the tested equipment through a data line (not shown in the figure), firstly, the power divider 2 distributes the radio frequency signal emitted by the signal source 1 to make the signal distributed into a plurality of paths of signals, a plurality of signals are all operated by the amplifying circuit 3 to amplify the signals, then the signals in a certain frequency range are allowed to normally pass through under the action of the preposed filter circuit 4, the signals of the other part of frequencies are prevented from passing through, the good filtering effect is achieved, the intensity of the signals is continuously adjusted through the adjustable attenuator 5, then the further filtering of the signals is realized through the postposition filter 6, through the detection of the signal detection system 7, whether the output signal is qualified is detected, if so, the signal is reflected through the condition that the green light of the signal output indicator lamp 8 is normally bright, if not so, the signal output indicator lamp 8 is normally bright through the condition that the red light of the signal output, then, the adjustable attenuator 5 is adjusted until the signal is qualified, and finally the signal is output to the device to be tested, and the power divider 2 may be selected according to actual needs, for example, a one-to-two power divider, a one-to-four power divider, or a one-to-eight power divider is selected, where what needs to be described is: the corresponding setting numbers of the amplifying circuit 3, the pre-filter circuit 4, the adjustable attenuator 5, the post-filter 6, the signal detection system 7 and the signal output indicator lamp 8 are matched with the number of the output ports of the power divider 2, and what needs to be explained is that: the utility model discloses do not further explain the internal circuit structure of adjustable attenuator 5, please refer to "multilink satellite simulation test system" that authorizing publication "CN 204694849U" records, including radio frequency signal link, time frequency signal link and data communication link; the radio frequency signal link comprises a multi-carrier navigation signal simulator, a power divider, a plurality of parallel test stations, a plurality of adjustable attenuators and a plurality of tested devices which are connected in sequence; the time-frequency signal link comprises a plurality of signal distribution operational amplifiers which are connected in parallel, the signal distribution operational amplifiers which are connected in parallel are connected with the multi-carrier navigation signal simulator, and the output end of the signal distribution operational amplifier is connected with a plurality of tested devices through a plurality of test stations; the data communication link includes serial server, industrial computer, network switch, emulation control module and interfering signal source, and serial server's data transmission end is connected with a plurality of test station and industrial computer respectively, and interfering signal source is connected with the industrial computer through serially connected emulation control module, network switch and serial server in proper order, above-mentioned china utility model has recorded adjustable attenuator 5 in, can adjust attenuator 5 and belong to prior art, and too much the repeated description is not done to it so, the utility model discloses broken the test mode of a pair of between navigation positioning class equipment and the signal source in the past, when guaranteeing the test structure accuracy, improved test system's efficiency of software testing.
Referring to fig. 2, the amplifying circuit 3 includes a first resistor R1, a first capacitor C1, an operational amplifier U1, and a second resistor R2, an output terminal of the power divider 2 is connected to an input terminal of the first resistor R1, an output terminal of the first resistor R1 is connected to a negative input terminal of the operational amplifier U1, an output terminal of the first capacitor C1 is connected to a positive input terminal of the operational amplifier U1, an output terminal of the operational amplifier U1 is connected to an input terminal of the second resistor R2, the prefilter circuit 4 includes a second capacitor C2, a third resistor R3, a third capacitor C3, a fourth resistor R4, and a fourth capacitor C4, the second capacitor C2 and the third resistor R3 are sequentially connected in series to form a first series circuit, the third capacitor C3 and the fourth resistor R4 are sequentially connected in series to a second series circuit, the first series circuit and the second series circuit are connected in parallel to form a parallel circuit, an output terminal of the second series circuit R2 is connected to an input terminal of the parallel circuit, the output end of the parallel circuit is connected with the input end of a fourth capacitor C4, the output end of a fourth capacitor C4 is connected with the input end of an adjustable attenuator 5, the post filter 6 comprises a fifth resistor R5 and a fifth capacitor C5, the output end of the adjustable attenuator 5 is connected with the input end of the fifth resistor R5, the output end of the fifth resistor R5 is connected with the input end of a fifth capacitor C5, and the output end of the fifth capacitor C5 is connected with the input end of the signal detection system 7.
In this embodiment: it should be noted that: the input end of the first capacitor C1 is connected to a reference voltage, and a specific value of the reference voltage is selected according to an amplification factor of the signal, where: the first resistor R1 and the second resistor R2 have the same resistance; the third resistor R3 and the fourth resistor R4 have the same resistance; the second capacitor C2 and the third capacitor C3 have the same resistance, and the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4 and the fifth capacitor C5 are polar capacitors.
Referring to fig. 3, the signal detection system 7 includes a central processing unit, a signal intensity detection module and a detection result output module, both the signal intensity detection module and the detection result output module are electrically connected to the central processing unit, and the detection result output module is electrically connected to the signal output indicator light 8.
In this embodiment: the signal output indicator light 8 has two output modes, a green light normally-on state and a red light normally-on state, the green light normally-on state indicates that the signal intensity is qualified, the red light normally-on state indicates that the signal intensity is unqualified, the signal intensity detection module detects the signal intensity output by the post filter 6 to obtain a signal intensity value A, a signal intensity threshold value range B is arranged in the central processing unit, whether the A is in B or not is judged through the processing of the central processing unit, if the A is in B, the signal intensity is qualified, then the detection result output module controls the signal output indicator light 8 to be the green light normally-on state, if the A is not in B, the signal intensity is qualified, then the detection result output module controls the signal output indicator light 8 to be the red light normally-on state, and what needs to be explained is: the central processing unit is a CPU, and has functions of algorithm identification, program setting, automatic control, and the like, and the central processing unit, the signal strength detection module, and the detection result output module are all common knowledge of those skilled in the art, so that the internal structure and the circuit principle thereof are not described in detail.
The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the improvement concept of the present invention within the technical scope disclosed in the present invention.
Claims (5)
1. An efficient satellite simulation test system is characterized in that: the power divider comprises a signal source (1), a power divider (2), an amplifying circuit (3), a pre-filter circuit (4), an adjustable attenuator (5), a post-filter (6), a signal detection system (7) and a signal output indicator lamp (8) which are sequentially connected in series.
2. A high efficiency satellite simulation test system according to claim 1, wherein: the amplifying circuit (3) comprises a first resistor R1, a first capacitor C1, an operational amplifier U1 and a second resistor R2, the output end of the power divider (2) is connected with the input end of the first resistor R1, the output end of the first resistor R1 is connected with the negative input end of the operational amplifier U1, the output end of the first capacitor C1 is connected with the positive input end of the operational amplifier U1, and the output end of the operational amplifier U1 is connected with the input end of the second resistor R2.
3. A high efficiency satellite simulation test system according to claim 2, wherein: the pre-filter circuit (4) comprises a second capacitor C2, a third resistor R3, a third capacitor C3, a fourth resistor R4 and a fourth capacitor C4, the second capacitor C2 and the third resistor R3 are sequentially connected in series to form a first series circuit, the third capacitor C3 and the fourth resistor R4 are sequentially connected in series to form a second series circuit, the first series circuit and the second series circuit are connected in parallel to form a parallel circuit, the output end of the second resistor R2 is connected with the input end of the parallel circuit, the output end of the parallel circuit is connected with the input end of the fourth capacitor C4, and the output end of the fourth capacitor C4 is connected with the input end of the adjustable attenuator (5).
4. A high efficiency satellite simulation test system according to claim 3, wherein: the post filter (6) comprises a fifth resistor R5 and a fifth capacitor C5, the output end of the adjustable attenuator (5) is connected with the input end of a fifth resistor R5, the output end of the fifth resistor R5 is connected with the input end of a fifth capacitor C5, and the output end of the fifth capacitor C5 is connected with the input end of the signal detection system (7).
5. A high efficiency satellite simulation test system according to any one of claims 1-4, wherein: the signal detection system (7) comprises a central processing unit, a signal intensity detection module and a detection result output module, wherein the signal intensity detection module and the detection result output module are both electrically connected with the central processing unit, and the detection result output module is electrically connected with a signal output indicator lamp (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020663496.1U CN211606538U (en) | 2020-04-27 | 2020-04-27 | High-efficient satellite simulation test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020663496.1U CN211606538U (en) | 2020-04-27 | 2020-04-27 | High-efficient satellite simulation test system |
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| Publication Number | Publication Date |
|---|---|
| CN211606538U true CN211606538U (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020663496.1U Expired - Fee Related CN211606538U (en) | 2020-04-27 | 2020-04-27 | High-efficient satellite simulation test system |
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| Country | Link |
|---|---|
| CN (1) | CN211606538U (en) |
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2020
- 2020-04-27 CN CN202020663496.1U patent/CN211606538U/en not_active Expired - Fee Related
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Granted publication date: 20200929 |