CN204928843U - OBU's microwave capability test device - Google Patents
OBU's microwave capability test device Download PDFInfo
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- CN204928843U CN204928843U CN201520669425.1U CN201520669425U CN204928843U CN 204928843 U CN204928843 U CN 204928843U CN 201520669425 U CN201520669425 U CN 201520669425U CN 204928843 U CN204928843 U CN 204928843U
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Abstract
The utility model discloses a OBU's microwave capability test device belongs to OBU production test equipment field. The device includes signal source (1), first frequency spectrograph (2), and signal control unit (3) be connected with signal source (1) and first frequency spectrograph (2) respectively, be equipped with the port of being connected with the examination OBU that awaits measuring on signal control unit (3), include still that the merit divides ware (4) and first combiner (5), the input that ware (4) are divided to the merit is connected with the signal output part of signal source (1), the output of first combiner (5) is connected with the signal input part of first frequency spectrograph (2), the merit divides the output of ware (4) and the input of first combiner (5) to be connected with first radiating antenna (6) respectively, first radiating antenna (6) are passed through microwave radiation with the examination OBU that awaits measuring and are connected. Adopt the device, can promote the efficiency of software testing of OBU's microwave performance greatly, reduce test cost.
Description
Technical field
The utility model belongs to OBU production test equipment field, is specifically related to the microwave property testing apparatus of a kind of OBU.
Background technology
The board units of OBU and E-payment system ETC, OBU product all will carry out the test of hardware and microwave property when dispatching from the factory, it is simple that hardware testing compares, and mainly tests function and the current drain of each functional module, needs a PC+ ammeter (support communication function).And the following test item of the main test of microwave property test: 1, tranmitting frequency; 2, transmitting power; 3, the index of modulation; 4; Wake sensitivity up; 5, receiving sensitivities etc., test needs PC+ signal source+frequency spectrograph just can complete test, and signal source, frequency spectrograph equipment are all High Value Units, for meeting certain production capacity, often needs the equipment buying several these high values.
Current production test is all a PC+ signal source+frequency spectrograph correspondence test OBU, above test item adopts sequential testing substantially, testing equipment is changed after a testing of equipment, such testing of equipment microwave property, test needs the time of about 18 seconds (tranmitting frequency 3S+ transmitting power 3S+ index of modulation 3S+ wakes 6S+ up and receives 3S), such a set of equipment test in a hour 200 OBU, if day, production capacity will reach 8K-10K, 5-7 is so just needed to overlap testing equipment, when equipment does not reach requested number, can only be worked overtime by personnel and finish the work.
Utility model content
For the defect existed in prior art, the purpose of this utility model is the microwave property testing apparatus providing a kind of OBU, greatly can be promoted the testing efficiency of OBU microwave property by this device, reduces production cost.
For achieving the above object, the technical solution adopted in the utility model is as follows:
The microwave property testing apparatus of a kind of OBU, comprise signal source, first frequency spectrograph, and the signaling control unit be connected with signal source and the first frequency spectrograph respectively, signaling control unit is provided with the port be connected with OBU to be tested, also comprise power splitter and the first mixer, the input of power splitter is connected with the signal output part of signal source, the output of the first mixer is connected with the signal input part of the first frequency spectrograph, the output of power splitter is connected with the first radiating antenna respectively with the input of the first mixer, first radiating antenna is connected by microwave with OBU to be tested.
Further, the microwave property testing apparatus of a kind of OBU as above, the number of described first mixer is n, and the first radiating antenna be connected with first mixer is connected with two OBU to be tested; Wherein, n >=1.
Further, the microwave property testing apparatus of a kind of OBU as above, the port be connected with OBU to be tested on described signaling control unit is serial ports.
Further, the microwave property testing apparatus of a kind of OBU as above, described signaling control unit comprises signal controller and the display for showing test results.
Further, the microwave property testing apparatus of a kind of OBU as above, also comprises the Insertion Loss calibrator (-ter) unit for carrying out Insertion Loss calibration to power splitter and the first mixer.
Further, the microwave property testing apparatus of a kind of OBU as above, this testing apparatus also comprises the second frequency spectrograph, and the second frequency spectrograph is connected with OBU to be tested, and signaling control unit is connected with the second frequency spectrograph.
Further, the microwave property testing apparatus of a kind of OBU as above, described second frequency spectrograph is connected with the second radiating antenna, and the second radiating antenna is connected by microwave with OBU to be tested, or described second frequency spectrograph is connected with the first radiating antenna by the second mixer.
The beneficial effects of the utility model are: the microwave property testing apparatus of OBU provided by the utility model, when the microwave property test carrying out OBU, can test multiple OBU simultaneously, greatly can promote the microwave test efficiency of OBU, reduce the cost of testing equipment.
Accompanying drawing explanation
The structural representation of the microwave property testing apparatus of a kind of OBU of Fig. 1 for providing in the utility model embodiment;
Fig. 2 is the structural representation of the microwave property testing apparatus providing another kind of OBU in the utility model embodiment;
Fig. 3 is the tranmitting frequency of OBU to be tested in the utility model embodiment and the flow chart of transmitting power test;
Fig. 4 is the flow chart of the index of modulation test of OBU to be tested in the utility model embodiment;
Fig. 5 is the flow chart waking sensitivity and receiving sensitivity test up of OBU to be tested in the utility model embodiment.
Embodiment
Below in conjunction with Figure of description and embodiment, the utility model is described in further detail.
Fig. 1 shows the structural representation of the microwave property testing apparatus of a kind of OBU in the utility model embodiment, have in figure and can find out, this testing apparatus comprises signal source 1, first frequency spectrograph 2, and the signaling control unit 3 be connected with signal source 1 and the first frequency spectrograph 2 respectively, signaling control unit 3 is provided with the port be connected with OBU9 to be tested, wherein, this device further comprises power splitter 4 and the first mixer 5, the input of power splitter 4 is connected with the signal output part of signal source 1, the output of the first mixer 5 is connected with the signal input part of the first frequency spectrograph 2, the output of power splitter 4 is connected with the first radiating antenna 6 respectively with the input of the first mixer 5, first radiating antenna 6 is connected with OBU to be tested by microwave.
Adopt in present embodiment the microwave property testing apparatus of the above-mentioned OBU provided can realize the tranmitting frequency of OBU and transmitting power, the index of modulation and the test waking the test item such as sensitivity and receiving sensitivity up.
When carrying out the test waking sensitivity and receiving sensitivity up, the microwave signal (OBU wake-up signal) that signal source 1 is launched is by can send to multiple tested OBU9 after power splitter 4 simultaneously, therefore, the test waking sensitivity and receiving sensitivity up of multiple tested OBU can be completed simultaneously.
When carrying out the test of transmitting power and tranmitting frequency, in present embodiment, according to different testing requirement, the number of described first mixer 5 can be n, wherein, and n >=1.Because OBU can only send the signal of two channels (frequency is different), therefore the first radiating antenna be connected with first mixer 5 can only microwave two OBU to be tested, namely first mixer 5 can only connect two OBU to be tested, receives the carrier signal that two OBU to be tested send.When needing tranmitting frequency and the transmitting power of testing OBU, if need to test multiple stage, only need to keep synchronization to have two OBU to be in test pattern.
When carrying out the test of debugging coefficient, because this test needs the first frequency spectrograph 2 to test in time domain, a frequency spectrograph once can only test the index of modulation of an OBU.
For the testing apparatus shown in Fig. 1, OBU9 to be tested shown in this device is 4, in order to realize testing while 4 OBU, this example comprises two the first mixers 5, a corresponding radiation of mixer two OBU to be tested, when testing and launching frequency and transmitting power, the frequency that signaling control unit 3 controls the carrier signal that two OBU to be tested corresponding to same first mixer 5 launch is different.It should be noted that, the device shown in Fig. 1 is an embodiment of testing apparatus provided by the utility model, and in actual use, the power of test of testing apparatus depends on the output of device or the performance index etc. of receiving ability and additional accessory.
In present embodiment, described signaling control unit 3 comprises signal controller for controlling signal, peripheral unit (as keyboard etc.) for the display that shows test results and other needs.Signaling control unit 3 can directly adopt PC to realize, and can certainly directly adopt the signal controller with display screen to realize.Can be connected by serial ports or other modes between signaling control unit 3 with OBU to be tested, concrete mode depends on the type of the test port of OBU to be tested.
In addition, in order to ensure consistency and the accuracy of tested OBU testing of equipment data, need to carry out Insertion Loss calibration to each road of power splitter 4 and the first mixer 5, therefore, the testing apparatus provided in present embodiment also comprises the Insertion Loss calibrator (-ter) unit for carrying out Insertion Loss calibration to power splitter 4 and the first mixer 5.
Test due to the index of modulation of OBU needs timesharing to test, and therefore, while carrying out tranmitting frequency and transmitting power test, is can not carry out the test of the index of modulation simultaneously.In order to promote testing efficiency further, in present embodiment, this testing apparatus also comprises the second frequency spectrograph 7, second frequency spectrograph 7 and is connected with OBU to be tested, and signaling control unit 3 is connected with the second frequency spectrograph 7.When second frequency spectrograph 7 is connected with OBU to be tested, can be connected with OBU to be tested by the second radiating antenna 8, namely the second frequency spectrograph 7 is connected with the second radiating antenna 8, second radiating antenna 8 is connected (as shown in Figure 2) with OBU microwave to be tested, or described second frequency spectrograph 7 is connected with the first radiating antenna 6 by the second mixer.
By increasing by the second frequency spectrograph 7, while other test item carries out, the test of the index of modulation can be carried out by the second frequency spectrograph 7.Because the index of modulation carries out in time domain, second frequency spectrograph 7 also can only carry out the test of the index of modulation of an OBU equipment at synchronization, therefore, in the index of modulation of reality test OBU, signaling control unit 3 needs to control synchronization and only has the modulation signal of an OBU to be tested to be sent to the second frequency spectrograph 7.
In order to better understand the utility model, based on the microwave property testing apparatus of the OBU shown in Fig. 1, additionally provide the microwave property method of testing of a kind of OBU in present embodiment, the method comprises test to the tranmitting frequency of OBU to be tested and transmitting power, the test to the index of modulation of OBU to be tested and the test waking sensitivity and receiving sensitivity up to OBU to be tested.
Before test, Insertion Loss calibration equipment is first adopted to complete the Insertion Loss calibration on each road of power splitter 4 and the first mixer, to keep the accuracy of test data.
The flow chart tested tranmitting frequency and the transmitting power of OBU to be tested has been shown in Fig. 3, and this test can comprise the following steps:
Step S11: be connected with OBU to be tested by signaling control unit 3, connects each first mixer 5 by the first radiating antenna 6 is corresponding with two OBU to be tested;
Step S12: two OBU to be tested that signaling control unit 3 controls to be connected with same first mixer 5 launch the carrier signal of different frequency;
Step S13: each first mixer 5 receives the carrier signal of two the to be tested OBUs corresponding with it, and receive two carrier signals are sent to the first frequency spectrograph 2;
Step S14: the first frequency spectrograph receives the carrier signal that the first mixer sends, and the first frequency spectrograph 2 completes at synchronization the tranmitting frequency of carrier signal and the test of transmitting power that first mixer 5 sends.
The flow chart tested the index of modulation of OBU to be tested has been shown in Fig. 4, and this test can comprise the following steps:
Step S21: be connected with OBU to be tested by signaling control unit 3, is connected the first mixer 5 with OBU to be tested by the first radiating antenna 6;
Step S22: signaling control unit 3 controls OBU to be tested and launches modulation signal, synchronization only has an OBU to be tested to launch modulation signal;
Step S23: the first mixer 5 receives the modulation signal of OBU to be tested, and the modulation signal received is sent to the first frequency spectrograph 2;
Step S24: the first frequency spectrograph 2 receives the modulation signal that the first mixer 5 sends, and completes the test of the index of modulation of modulation signal one by one.
Illustrated in Fig. 5 and waken to OBU to be tested the flow chart that sensitivity and receiving sensitivity test up, this test can comprise the following steps:
Step S31: be connected with OBU to be tested by signaling control unit 3, is connected power splitter 4 with OBU to be tested by the first radiating antenna 6;
Step S32: OBU wake-up signal is launched in signaling control unit 3 control signal source 1;
Step S33: the OBU wake-up signal that power splitter 4 Received signal strength source 1 is launched, and give OBU to be tested by described OBU wake-up signal by the first radiating antenna 6 radiation, complete the test waking sensitivity and receiving sensitivity up of OBU to be tested.
The OBU wake-up signal that signal source 1 is launched, after power splitter 4, multiple OBU to be tested is given in radiation respectively, can complete the test waking sensitivity and receiving sensitivity up of multiple OBU to be tested simultaneously, substantially increase testing efficiency.
When adopting the device shown in Fig. 1 in present embodiment to carry out the microwave property test of 4 OBU, the mean test time of an OBU is about 9 seconds (tranmitting frequency 3/2S+ transmitting power 3/2S+ index of modulation 3S+ wakes 6/4S+ up and receives 3/4S), compared with existing testing apparatus, improved efficiency one times, adopt this device, when reaching identical day production capacity demand, testing apparatus can reduce half, considerably reduces cost.
Additionally provide the microwave property method of testing of a kind of a kind of OBU of the microwave property testing apparatus based on the OBU shown in Fig. 2 in present embodiment, the method comprises test to the tranmitting frequency of OBU to be tested and transmitting power, the test to the index of modulation of OBU to be tested and the test waking sensitivity and receiving sensitivity up to OBU to be tested equally.
Due to the testing apparatus shown in Fig. 2 be in FIG shown in device basis on, increase by the second frequency spectrograph 7, therefore, when adopting this device to test, tranmitting frequency and transmitting power, the index of modulation can be carried out simultaneously and wake the test of sensitivity and receiving sensitivity up.Adopt the device in Fig. 2 to be identical to the tranmitting frequency of OBU to be tested and the test of transmitting power and the mode of testing the test waking sensitivity and receiving sensitivity up and the device adopted in Fig. 1, distinguish and be only that employing second frequency spectrograph 7 carries out the test of the index of modulation.Concrete, the test of the index of modulation of OBU to be tested is comprised the following steps:
(1) signaling control unit 3 is connected with OBU to be tested, the second frequency spectrograph 7 is connected with OBU to be tested;
(2) signaling control unit 3 controls OBU to be tested transmitting modulation signal, and synchronization only has an OBU to be tested to launch modulation signal;
(3) second frequency spectrographs 7 receive the modulation signal of OBU to be tested, and complete the test of the index of modulation of modulation signal one by one.
In step (1), the second frequency spectrograph 7 is connected with OBU to be tested by the second radiating antenna 8, or the second frequency spectrograph 7 is connected with the first radiating antenna 6 by the second mixer.In the first connected mode, the second radiating antenna 8 can be connected by microwave with multiple OBU to be tested, receives the modulation signal that OBU to be tested sends, and sends to the second frequency spectrograph 7; In second in connected mode, the first radiating antenna 6 receives the modulation signal that OBU to be tested sends, and sends to the second frequency spectrograph by the second mixer.
Adopt and add the testing apparatus of the second frequency spectrograph 7, although can cause the lifting of cost due to the increase of the second frequency spectrograph 7, the mean test time test adopting this device to complete an OBU is only about 6 seconds, further increases testing efficiency.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technology thereof, then the utility model is also intended to comprise these change and modification.
Claims (7)
1. the microwave property testing apparatus of an OBU, comprise signal source (1), first frequency spectrograph (2), and the signaling control unit (3) be connected with signal source (1) and the first frequency spectrograph (2) respectively, signaling control unit (3) is provided with the port be connected with OBU to be tested, it is characterized in that: also comprise power splitter (4) and the first mixer (5), the input of power splitter (4) is connected with the signal output part of signal source (1), the output of the first mixer (5) is connected with the signal input part of the first frequency spectrograph (2), the output of power splitter (4) is connected with the first radiating antenna (6) respectively with the input of the first mixer (5), first radiating antenna (6) is connected by microwave with OBU to be tested.
2. the microwave property testing apparatus of a kind of OBU according to claim 1, it is characterized in that: the number of described first mixer (5) is n, and the first radiating antenna (6) be connected with first mixer (5) is connected with two OBU to be tested; Wherein, n >=1.
3. the microwave property testing apparatus of a kind of OBU according to claim 1, is characterized in that: the port be connected with OBU to be tested on described signaling control unit (3) is serial ports.
4. the microwave property testing apparatus of a kind of OBU according to claim 1, is characterized in that: described signaling control unit (3) comprises signal controller and the display for showing test results.
5. the microwave property testing apparatus of a kind of OBU according to claim 1, is characterized in that: also comprise the Insertion Loss calibrator (-ter) unit for carrying out Insertion Loss calibration to power splitter (4) and the first mixer (5).
6. according to the microwave property testing apparatus of a kind of OBU one of claim 1 to 5 Suo Shu, it is characterized in that: this testing apparatus also comprises the second frequency spectrograph (7), second frequency spectrograph (7) is connected with OBU to be tested, and signaling control unit (3) is connected with the second frequency spectrograph (7).
7. the microwave property testing apparatus of a kind of OBU according to claim 6, it is characterized in that: described second frequency spectrograph (7) is connected with the second radiating antenna (8), second radiating antenna (8) is connected by microwave with OBU to be tested, or described second frequency spectrograph (7) is connected with the first radiating antenna (6) by the second mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520669425.1U CN204928843U (en) | 2015-08-31 | 2015-08-31 | OBU's microwave capability test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520669425.1U CN204928843U (en) | 2015-08-31 | 2015-08-31 | OBU's microwave capability test device |
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| CN204928843U true CN204928843U (en) | 2015-12-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105227250A (en) * | 2015-08-31 | 2016-01-06 | 北京握奇智能科技有限公司 | The microwave property testing apparatus of a kind of OBU and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105227250A (en) * | 2015-08-31 | 2016-01-06 | 北京握奇智能科技有限公司 | The microwave property testing apparatus of a kind of OBU and method |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20210831 |
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| CF01 | Termination of patent right due to non-payment of annual fee |