CN102195728A - System for testing performance of ISM (industry, science and medicine) frequency range communication product and testing method - Google Patents
System for testing performance of ISM (industry, science and medicine) frequency range communication product and testing method Download PDFInfo
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- CN102195728A CN102195728A CN2011101366632A CN201110136663A CN102195728A CN 102195728 A CN102195728 A CN 102195728A CN 2011101366632 A CN2011101366632 A CN 2011101366632A CN 201110136663 A CN201110136663 A CN 201110136663A CN 102195728 A CN102195728 A CN 102195728A
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Abstract
The invention relates to a system for testing the performance of an ISM (industry, science and medicine) frequency range communication product and a testing method, and in particular relates to a system for testing the performance of a communication product and a testing method, and the problem of low testing accuracy of the existing method for testing the performance of the ISM frequency range communication product is solved. In the system provided by the invention, N transmitters to be tested and a reference transmitter are accessed to a chain through a No.1 multi-way switch and connected with N receivers to be tested and a reference receiver after passing through an adjustable attenuator, a fixed attenuator, a combiner and a shunt; and an oscilloscope displays the waveform of each receiver. In the method provided by the invention, the performance detection of the ISM frequency range communication product to be tested is realized by testing the sensitivity of the receivers to be tested, the transmission power of the transmitters to be tested, the same-frequency interference-resistant performance of the receivers to be tested, the multi-address interference-resistant performance of the receivers to be tested and the high and low temperature-resistant performance of the product to be tested. The invention is suitable for testing the performance of the ISM frequency range communication product.
Description
Technical field
The present invention relates to a kind of system and method for testing of test communications properties of product.
Background technology
The wireless standard that works in ISM band at present mainly contains Wi-Fi, bluetooth and ZigBee etc.What wherein bluetooth was used is the rf modulations method of frequency-hopping spread spectrum; What 802.11a/802.11g among the Wi-Fi and 802.15.4 (being called ZigBee when combining with the upper layer network layer) used is the rf modulations method of direct sequence spread spectrum; 802.11b adopt frequency-hopping spread spectrum and two kinds of rf modulations methods of direct sequence spread spectrum.Above-mentioned all methods all work in the ISM band (promptly 2.4～2.483GHz) of global general-use.In addition, a lot of chip manufacturers have released the wireless communication chips that works in 2.4GHz, have released the nRF24e1 chip of a built-in wireless transceiver nRF2401 and enhancement mode 8051 kernels as: the NORDIC company in Northern Europe.The working frequency range of these chips overlaps with above-mentioned three kinds of wireless standards, if therefore do not take measures necessary, adopt between the product of these chips, product and meet between the product of three kinds of wireless standards and will certainly produce interference, thereby cause product work on the spot performance significantly to descend.
The method of the solution interference problem that adopts mainly contains two kinds at present: first method is to use under the condition of on-the-spot electromagnetic environment in known product, for different products is divided different frequency ranges.Introduce 802.11b, bluetooth, three kinds of concrete frequency ranges that wireless standard adopted of ZigBee below: adopting the bandwidth of each passage of 802.11b of direct sequence spread spectrum is 22MHz, do not overlap each other so in the frequency range of 2.4～2.483GHz, allow to adopt three equally distributed passages simultaneously, the passage that each access point (AP) uses needs manual configuration, and client can be searched for the available access point in all passages; Bluetooth adopts frequency-hopping spread spectrum that the 2.4GHz frequency range is divided into the passage of 79 1MHz, and bluetooth equipment is jumped 1600 times at these 79 interchannel per seconds in the pseudo noise code mode; ZigBee has defined 16 passages in the 2.4GHzISM frequency range, every channel width 3MHz, and channel center is spaced apart 5MHz, leaves the frequency interval of 2MHz between adjacent channel; By foregoing as can be seen: can rationally arrange the working frequency range of 802.11b, bluetooth, three kinds of wireless products of ZigBee in 2.4GHz～2.483GHz scope, make between them and can not produce interference.Second method is that the protocol contents that makes full use of various standards is carried out Interference Control; Such as: the client of Wi-Fi is listening under the situation of channel busy, can carry out random back, and then listen to this channel, if free time then prepare to transmit if channel is busy always, is then sought other access points that are positioned on other passages; Bluetooth equipment adopts that the AFH pattern solves between the different bluetooth piconets, the interference problem between bluetooth equipment and the Wi-Fi.
But above-mentioned two kinds of methods that solve interference problem all have certain limitation, and at first because the ISM band product is widely adopted, may there be the ISM band product of other unknown frequencies in the product site of deployment; Next utilizes the protocol contents of standard to carry out Interference Control needs the receiver of product to determine RSSI (indication of received signal intensity), and this only just can be received machine at the product scene that is placed to and record, and test accuracy is lower; In addition, present ISM band product price is cheap, therefore, each product is all carried out the performance of sensitivity, antijamming capability and tests separately, and cost is too high.
Summary of the invention
The present invention is the low problem of test accuracy for the method that solves existing test I SM frequency range communication products performance, thereby a kind of system and method for testing of test I SM frequency range communication products performance are provided.
A kind of system of test I SM frequency range communication products performance, it comprises reference transmitter, a variable connector, adjustable attenuator, fixed attenuator, mixer, interference signal source, splitter, reference receiver, No. two variable connectors and oscilloscope, communication products to be measured comprise N transmitter to be measured and N receiver to be measured, described N transmitter signal transmitting terminal to be measured and reference transmitter signal transmitting terminal by variable connector one by one or the while be connected with the signal input part of adjustable attenuator, the deamplification output of adjustable attenuator is connected with the deamplification input of fixed attenuator; The fixed attenuation signal output part of fixed attenuator is connected with the fixed attenuation signal input part of mixer; The interference signal output of interference signal source is connected with the interference signal input of mixer; The signal output part of mixer is connected with the signal input part of splitter; A plurality of signal output parts of splitter are connected with the signal receiving end of N receiver to be measured, the signal receiving end of reference receiver respectively; The signal output part of N receiver to be measured is connected with oscillographic signal input part by No. two variable connectors one by one with the signal output part of reference receiver; All be connected between N transmitter to be measured and reference transmitter and the variable connector by isometric radio frequency signal transmission line; All be connected between N receiver to be measured and reference receiver and No. two variable connectors by isometric digital data transmission line; N is a positive integer.
Based on the method for testing of the ISM band communication products performance of said system, it is realized by following steps:
Step 1, make reference transmitter and reference receiver in running order, under normal temperature condition, adopt the transmit signal power of power meter test reference transmitter; Under reference transmitter access link, a N transmitter disconnection to be measured, reference receiver access link, a N state that receiver to be measured disconnects, the attenuation of adjustable attenuator is set to zero, adopt the received signal power of power meter test reference receiver;
It is poor that the received signal power of the transmit signal power of reference transmitter and reference receiver is done, and obtains the link loss value between reference transmitter and the reference receiver, comprises the link loss value of adjustable attenuator in the described link loss value;
Because radio-frequency transmission line equal in length between N transmitter to be measured and reference transmitter and the variable connector; Radio-frequency transmission line equal in length between N receiver to be measured and reference receiver and No. two variable connectors; Therefore, when N transmitter to be measured and N receiver access link to be measured, arbitrary transmitter to be measured all equates with link loss value between arbitrary receiver to be measured, and is equal to the link loss value between reference transmitter and the reference receiver, and described link loss value is called basic loss value;
Step 2, make all transmitters to be measured and receiver to be measured, oscilloscope and interference signal source in running order, under reference transmitter access link, a N transmitter disconnection to be measured, reference receiver access link, a N state that receiver to be measured disconnects, regulate the numerical value of adjustable attenuator, make the reference receiver that observes by oscilloscope be in the sensitivity state, the minimum signal strength value of described sensitivity for carrying out correct demodulation; The basic loss value sum of the pad value of adjustable attenuator and step 1 acquisition at this moment is the total losses of link;
Adopt the transmitting power of the reference transmitter of step 1 acquisition to deduct the link total losses, obtain the sensitivity of reference receiver, be called reference sensitivity;
Step 3, disconnect at reference transmitter access link, a N transmitter to be measured, under the state that a N receiver access link to be measured, reference receiver disconnect, regulate adjustable attenuator, and pass through No. two variable connectors one by one with in each receiver access link to be measured, the sensitivity that records each receiver to be measured;
The reference sensitivity that the sensitivity of each receiver to be measured of obtaining is obtained with step 2 respectively relatively, and whether the difference of judging the sensitivity of each receiver to be measured and reference sensitivity respectively is within default error range, if the judgment is No, then the sensitivity of corresponding receiver to be measured is defective; If judged result is for being that then the sensitivity of Dui Ying receiver to be measured is qualified, execution in step four;
Step 4, the transmitting power of ISM band communication products to be measured detects: at the reference receiver access link, N receiver to be measured disconnects, N transmitter to be measured disconnects, under the state of reference transmitter access link, regulate adjustable attenuator, make reference receiver be in the sensitivity state, the pad value of the adjustable attenuator of this moment is called the benchmark pad value, pass through a variable connector then one by one with N transmitter access link to be measured, the pad value of the adjustable attenuator when test makes reference receiver be in the sensitivity state respectively, by comparing the benchmark pad value on adjustable attenuator of each transmitter and reference transmitter, determine the power output of each transmitter to be measured, and whether the power output difference of judging the power output of each transmitter to be measured and reference transmitter respectively is within default error range, if judged result is that then the transmitting power of Dui Ying transmitter to be measured is not defective; If judged result is for being that then the transmitting power of Dui Ying transmitter to be measured is qualified, execution in step five;
Step 5, the anti-co-channel interference Performance Detection of ISM band communication products to be measured: at reference receiver and N receiver access link to be measured, N transmitter to be measured disconnects, under the state of reference transmitter access link, adopt interference signal source to launch the Wi-Fi frequency respectively, the signal of bluetooth frequency and ZigBee frequency, the witness mark receiver is at the Wi-Fi frequency, the reception error rate under bluetooth frequency and the ZigBee frequency, and under similarity condition, a measuring N receiver to be measured is at the Wi-Fi frequency, the reception error rate under bluetooth frequency and the ZigBee frequency, whether the difference of judging the error rate of each receiver to be measured and the error rate between the reference receiver is within default error amount, if judged result is not, then the anti-co-channel interference performance inconsistency lattice of Dui Ying receiver to be measured; If judged result is for being, then the anti-co-channel interference performance of Dui Ying receiver to be measured is qualified, and then execution in step six;
The anti-multiple access jamming performance of step 6, ISM band communication products to be measured detects: inserts mixer, a N receiver and reference receiver simultaneously at N transmitter and reference transmitter and inserts simultaneously under the state of splitter,
If the transmitter that inserts in the link and reference transmitter adopt the mode of code division multiple access, and when be direct sequence spread spectrum, then with N transmitter and the different spreading code of reference transmitter distribution;
If the transmitter that inserts in the link and reference transmitter adopt the mode of code division multiple access, and when be frequency hopping, then with N transmitter and the different frequency hopping pattern of reference transmitter distribution;
If transmitter that inserts in the link and reference transmitter adopt FDMA, then N transmitter distributed different frequency ranges with reference transmitter;
If transmitter that inserts in the link and reference transmitter adopt time-division multiple address system, then N transmitter distributed different time slots with reference transmitter;
Regulate adjustable attenuator, under different adjustable attenuator pad value conditions, by controlling a variable connector and No. two variable connectors, the witness mark receiver receives the error rate that transmits of transmitting of reference transmitter and each transmitter respectively, and with the described error rate as receiver error rate standard;
By controlling a variable connector and No. two variable connectors, measure the error rate that transmits that each receiver to be measured receives transmitting of reference transmitter and each transmitter respectively; And respectively the error rate that obtains is compared with corresponding receiver error rate standard, if comparative result exceeds default error range, then the anti-multiple access jamming performance of Dui Ying receiver to be measured is defective; If judged result is for being that then the anti-multiple access jamming performance of Dui Ying receiver to be measured is qualified, execution in step seven;
The high and low temperature resistance of step 7, ISM band communication products to be measured detects: carry out a step 2 respectively to step 7 under+60 ℃ and-40 ℃ of conditions, and judge whether to occur the receiver to be measured or the underproof receiver to be measured of anti-multiple access jamming performance of the underproof receiver to be measured of sensitivity, the underproof transmitter to be measured of transmitting power, anti-co-channel interference performance inconsistency lattice, if judged result is for being that then the high and low temperature resistance of these ISM band communication products to be measured is defective; If judged result is that then the high and low temperature resistance of these ISM band communication products to be measured is unqualified, execution in step eight then;
Step 8, judge whether ISM band communication products to be measured are the duplex communication product, if judged result is for being, then with the location swap of reference transmitter and reference receiver, location swap with N transmitter to be measured and N receiver to be measured, repeat a step 1 to step 7, finish Performance Detection ISM band communication products to be measured; If judged result is then finished the Performance Detection to ISM band communication products to be measured for not.
The method for selecting of reference transmitter described in the step 1 and reference receiver is:
It comprises the reference transmitter of non-duplex communication and the reference transmitter and the reference receiver method for selecting of reference receiver method for selecting and duplex communication, and the reference transmitter of described non-duplex communication and reference receiver method for selecting are:
Steps A 1, the transmitter of selecting a non-duplex communication and the receiver of a non-duplex communication, normal temperature ,+transmitting power of this transmitter and the receiver sensitivity of this receiver are tested under 60 ℃ and-40 ℃ of three kinds of temperature, and judge whether test result satisfies predetermined index request, if judged result is for being, then with this transmitter as the reference transmitter, this receiver as the reference receiver, is finished reference receiver selected of the reference transmitter of non-duplex communication and non-duplex communication; If judged result is not, then execution in step A2;
Steps A 2, reselect the transmitter of a non-duplex communication and the receiver of a non-duplex communication, and return steps A 1;
The transmitter method for selecting of duplex communication is:
Step B1, select a transmitter of duplex communication and a receiver of duplex communication, normal temperature ,+transmitting power of this transmitter and the receiver sensitivity of this receiver are tested under 60 ℃ and-40 ℃ of three kinds of temperature, and judge whether test result satisfies predetermined index request, if judged result is for being, execution in step B2 then; If judged result is not, then execution in step B3;
Step B2, change this transmitter and this receiver location, and normal temperature ,+transmitting power of this transmitter and the receiver sensitivity of this receiver are tested under 60 ℃ and-40 ℃ of three kinds of temperature, and judge whether test result satisfies predetermined index request, if judged result is for being, then with this transmitter as the reference transmitter, this receiver as the reference receiver, is finished reference receiver selected of the reference transmitter of duplex communication and duplex communication; If judged result is not, then execution in step B3;
Step B3, reselect the transmitter of a duplex communication and the receiver of a duplex communication, and return step B1.
Beneficial effect: the present invention is by sensitivity, the transmitting power of transmitter to be measured, the anti-co-channel interference performance of receiver to be measured, the anti-multiple access jamming performance of receiver to be measured and the high and low temperature resistance of product to be measured of receiver to be measured in the test I SM frequency range communication products, realization is to the Performance Detection of these ISM band communication products to be measured, the test accuracy height.And the present invention is applicable to batch testing ISM band communication products.
Description of drawings
Fig. 1 is the structural representation of system of the present invention.
Embodiment
Embodiment one, in conjunction with Fig. 1 this embodiment is described, a kind of system of test I SM frequency range communication products performance, it comprises reference transmitter 1, a variable connector 2, adjustable attenuator 3, fixed attenuator 4, mixer 5, interference signal source 6, splitter 7, reference receiver 8, No. two variable connectors 9 and oscilloscope 10, communication products to be measured comprise N transmitter to be measured and N receiver to be measured, described N transmitter signal transmitting terminal to be measured and reference transmitter 1 signal transmitting terminal by variable connector 2 one by one or the while be connected with the signal input part of adjustable attenuator 3, the deamplification output of adjustable attenuator 3 is connected with the deamplification input of fixed attenuator 4; The fixed attenuation signal output part of fixed attenuator 4 is connected with the fixed attenuation signal input part of mixer 5; The interference signal output of interference signal source 6 is connected with the interference signal input of mixer 5; The signal output part of mixer 5 is connected with the signal input part of splitter 7; A plurality of signal output parts of splitter 7 are connected with the signal receiving end of N receiver to be measured, the signal receiving end of reference receiver 8 respectively; The signal output part of N receiver to be measured is connected with the signal input part of oscilloscope 10 by No. two variable connectors 9 one by one with the signal output part of reference receiver 8; All be connected between N transmitter to be measured and reference transmitter 1 and the variable connector 2 by isometric radio frequency signal transmission line; All be connected between N receiver to be measured and reference receiver 8 and No. two variable connectors 9 by isometric digital data transmission line; N is a positive integer.
The present invention utilizes the spatial transmission loss of wired decay simulation electric wave, chooses a pair of communication transceiver of testing through strictness as a reference, tests the index of other communication transceivers.Wherein, produce the standard radio signal of ISM band as interference source with signal source; With the loss when the spatial transmission of the loss analog wireless signals of the attenuation of attenuator and transmission line; Error condition with the oscilloscope warning receiver.
The present invention is applicable to that all work in the test of ISM band product, test for the simplified receiver error rate, can allow transmitter from numeral 1, send the numeral that increases progressively continuously, waveform is observed and preserved to digital output end at receiver with oscilloscope, by analyzing the waveform of preserving, just can calculate the error rate of receiver.The received signal power of the error rate correspondence of mentioning in the technical target of the product is called the sensitivity of product.The product index of examining among the present invention is as shown in table 1, and the X in the indication range, Y, Z, W determine by concrete communication products, so that guarantee consistency of product, just the transmitter and receiver in this scope is considered to qualified products.
The product index of examining among table 1 the present invention
The difference of the system of embodiment two, this embodiment and embodiment one described a kind of test I SM frequency range communication products performance is, it also comprises a height incubator 11 and No. two height incubators 12, individual transmitter to be measured of described N and reference transmitter 1 are arranged in height incubator 11 No. one, and individual receiver to be measured of N and reference receiver 8 are arranged in height incubator 12 No. two.
In the present embodiment, consider that communication products need carry out thermocycling, transmitter to be measured and receiver to be measured are put into two high-low temperature chambers respectively, be convenient to carry out the test under the high low temperature condition.The purpose of product being put into high-low temperature chamber has two: first is the thermocycling of being convenient to carry out after the normal temperature test; Second is to isolate the influence of the radio wave of transmitter emission to receiver, has only the influence of having isolated radio wave, and the attenuation of wire link could be comparable with the wireless attenuation under the true environment.In order further to reduce the influence of radio wave leakage to receiver, unless cable and adapter break down, otherwise do not want the cable and the adapter of dismounting high-low temperature chamber outside easily, after a collection of product test is finished, carry out the dismounting of product in high-low temperature chamber inside, even this makes the cable of the product that case is interior and adapter reveal radio wave, also only limit to sweat box inside, can not be leaked to the outside.
Embodiment three, based on the method for testing of the system of embodiment one described a kind of test I SM frequency range communication products performance, it is realized by following steps:
Step 1, make reference transmitter 1 and reference receiver 8 in running order, under normal temperature condition, adopt the transmit signal power of power meter test reference transmitter 1; Under reference transmitter 1 access link, a N transmitter disconnection to be measured, reference receiver 8 access link, a N state that receiver to be measured disconnects, the attenuation of adjustable attenuator 3 is set to zero, adopt the received signal power of power meter test reference receiver 8;
It is poor that the received signal power of the transmit signal power of reference transmitter 1 and reference receiver 8 is done, and obtains the link loss value between reference transmitter 1 and the reference receiver 8, comprises the link loss value of adjustable attenuator 3 in the described link loss value;
Because radio-frequency transmission line equal in length between N transmitter to be measured and reference transmitter 1 and the variable connector 2; Digital transmission line equal in length between N receiver to be measured and reference receiver 8 and No. two variable connectors 9; Therefore, when N transmitter to be measured and N receiver access link to be measured, arbitrary transmitter to be measured all equates with link loss value between arbitrary receiver to be measured, and be equal to the link loss value between reference transmitter 1 and the reference receiver 8, described link loss value is called basic loss value;
Step 2, make all transmitters to be measured and receiver to be measured, oscilloscope 10 and interference signal source 6 in running order, under reference transmitter 1 access link, a N transmitter disconnection to be measured, reference receiver 8 access link, a N state that receiver to be measured disconnects, regulate the numerical value of adjustable attenuator 3, make the reference receiver 8 that observes by oscilloscope 10 be in the sensitivity state, the minimum signal strength value of described sensitivity for carrying out correct demodulation; The basic loss value sum of the pad value of adjustable attenuator 3 and step 1 acquisition at this moment is the total losses of link;
Adopt the transmitting power of the reference transmitter 1 of step 1 acquisition to deduct the link total losses, obtain the sensitivity of reference receiver 8, be called reference sensitivity;
Step 3, disconnect at reference transmitter access link, a N transmitter to be measured, under the state that a N receiver access link to be measured, reference receiver 8 disconnect, regulate adjustable attenuator 3, and pass through No. two variable connectors one by one with in each receiver access link to be measured, the sensitivity that records each receiver to be measured;
The reference sensitivity that the sensitivity of each receiver to be measured of obtaining is obtained with step 2 respectively relatively, and whether the difference of judging the sensitivity of each receiver to be measured and reference sensitivity respectively is within default error range, if the judgment is No, then the sensitivity of corresponding receiver to be measured is defective; If judged result is for being that then the sensitivity of Dui Ying receiver to be measured is qualified, execution in step four;
Step 4, the transmitting power of ISM band communication products to be measured detects: at reference receiver 8 access link, N receiver to be measured disconnects, N transmitter to be measured disconnects, under the state of reference transmitter 1 access link, regulate adjustable attenuator 3, make reference receiver 8 be in the sensitivity state, the pad value of the adjustable attenuator 3 of this moment is called the benchmark pad value, pass through a variable connector 2 then one by one with N transmitter access link to be measured, the pad value of the adjustable attenuator when test makes reference receiver 8 be in the sensitivity state respectively, by comparing the benchmark pad value on adjustable attenuator 3 of each transmitter and reference transmitter 1, determine the power output of each transmitter to be measured, and whether the power output difference of judging the power output of each transmitter to be measured and reference transmitter respectively is within default error range, if judged result is that then the transmitting power of Dui Ying transmitter to be measured is not defective; If judged result is for being that then the transmitting power of Dui Ying transmitter to be measured is qualified, execution in step five;
Step 5, the anti-co-channel interference Performance Detection of ISM band communication products to be measured: at reference receiver 8 and N receiver access link to be measured, N transmitter to be measured disconnects, under the state of reference transmitter 1 access link, adopt interference signal source 6 to launch the Wi-Fi frequency respectively, the signal of bluetooth frequency and ZigBee frequency, witness mark receiver 8 is at the Wi-Fi frequency, the reception error rate under bluetooth frequency and the ZigBee frequency, and under similarity condition, a measuring N receiver to be measured is at the Wi-Fi frequency, the reception error rate under bluetooth frequency and the ZigBee frequency, whether the difference of judging the error rate of each receiver to be measured and the error rate between the reference receiver is within default error amount, if judged result is not, then the anti-co-channel interference performance inconsistency lattice of Dui Ying receiver to be measured; If judged result is for being, then the anti-co-channel interference performance of Dui Ying receiver to be measured is qualified, and then execution in step six;
The anti-multiple access jamming performance of step 6, ISM band communication products to be measured detects: inserts mixer 5, a N receiver and reference receiver 8 simultaneously at N transmitter and reference transmitter 1 and inserts simultaneously under the state of splitter 7,
If the transmitter that inserts in the link and reference transmitter 1 adopts the mode of code division multiple access, and when be direct sequence spread spectrum, then with N transmitter and the different spreading code of reference transmitter 1 distribution;
If the transmitter that inserts in the link and reference transmitter 1 adopts the mode of code division multiple access, and when be frequency hopping, then with N transmitter and the different frequency hopping pattern of reference transmitter 1 distribution;
If transmitter that inserts in the link and reference transmitter 1 adopt FDMA, then N transmitter distributed different frequency ranges with reference transmitter 1;
If transmitter that inserts in the link and reference transmitter 1 adopt time-division multiple address system, then N transmitter distributed different time slots with reference transmitter 1;
Regulate adjustable attenuator 3, under different adjustable attenuator pad value conditions, by controlling a variable connector 2 and No. two variable connectors 9, witness mark receiver 8 receives the error rate that transmits of transmitting of reference transmitters 1 and each transmitter respectively, and with the described error rate as receiver error rate standard;
By controlling a variable connector 2 and No. two variable connectors 9, measure the error rate that transmits that each receiver to be measured receives transmitting of reference transmitter 1 and each transmitter respectively; And respectively the error rate that obtains is compared with corresponding receiver error rate standard, if comparative result exceeds default error range, then the anti-multiple access jamming performance of Dui Ying receiver to be measured is defective; If judged result is for being that then the anti-multiple access jamming performance of Dui Ying receiver to be measured is qualified, execution in step seven;
The high and low temperature resistance of step 7, ISM band communication products to be measured detects: carry out a step 2 respectively to step 7 under+60 ℃ and-40 ℃ of conditions, and judge whether to occur the receiver to be measured or the underproof receiver to be measured of anti-multiple access jamming performance of the underproof receiver to be measured of sensitivity, the underproof transmitter to be measured of transmitting power, anti-co-channel interference performance inconsistency lattice, if judged result is for being that then the high and low temperature resistance of these ISM band communication products to be measured is defective; If judged result is that then the high and low temperature resistance of these ISM band communication products to be measured is unqualified, execution in step eight then;
Step 8, judge whether ISM band communication products to be measured are the duplex communication product, if judged result is for being, then with the location swap of reference transmitter 1 with reference receiver 8, location swap with N transmitter to be measured and N receiver to be measured, repeat a step 1 to step 7, finish Performance Detection ISM band communication products to be measured; If judged result is then finished the Performance Detection to ISM band communication products to be measured for not.
The method for selecting of reference transmitter described in the step 11 and reference receiver 8 is:
It comprises the reference transmitter 1 of non-duplex communication and the reference transmitter 1 and reference receiver 8 method for selecting of reference receiver 8 method for selecting and duplex communication, and the reference transmitter 1 of described non-duplex communication and reference receiver 8 method for selecting are:
Steps A 1, the transmitter of selecting a non-duplex communication and the receiver of a non-duplex communication, normal temperature ,+transmitting power of this transmitter and the receiver sensitivity of this receiver are tested under 60 ℃ and-40 ℃ of three kinds of temperature, and judge whether test result satisfies predetermined index request, if judged result is for being, then with this transmitter as the reference transmitter, this receiver as the reference receiver, is finished reference receiver selected of the reference transmitter of non-duplex communication and non-duplex communication; If judged result is not, then execution in step A2;
Steps A 2, reselect the transmitter of a non-duplex communication and the receiver of a non-duplex communication, and return steps A 1;
The transmitter method for selecting of duplex communication is:
Step B1, select a transmitter of duplex communication and a receiver of duplex communication, normal temperature ,+transmitting power of this transmitter and the receiver sensitivity of this receiver are tested under 60 ℃ and-40 ℃ of three kinds of temperature, and judge whether test result satisfies predetermined index request, if judged result is for being, execution in step B2 then; If judged result is not, then execution in step B3;
Step B2, change this transmitter and this receiver location, and normal temperature ,+transmitting power of this transmitter and the receiver sensitivity of this receiver are tested under 60 ℃ and-40 ℃ of three kinds of temperature, and judge whether test result satisfies predetermined index request, if judged result is for being, then with this transmitter as the reference transmitter, this receiver as the reference receiver, is finished reference receiver selected of the reference transmitter of duplex communication and duplex communication; If judged result is not, then execution in step B3;
Step B3, reselect the transmitter of a duplex communication and the receiver of a duplex communication, and return step B1.
Claims (4)
1. the system of a test I SM frequency range communication products performance, it is characterized in that: it comprises reference transmitter (1), a variable connector (2), adjustable attenuator (3), fixed attenuator (4), mixer (5), interference signal source (6), splitter (7), reference receiver (8), No. two variable connectors (9) and oscilloscope (10), communication products to be measured comprise N transmitter to be measured and N receiver to be measured, described N transmitter signal transmitting terminal to be measured and reference transmitter (1) signal transmitting terminal by a variable connector (2) one by one or the while be connected with the signal input part of adjustable attenuator (3), the deamplification output of adjustable attenuator (3) is connected with the deamplification input of fixed attenuator (4); The fixed attenuation signal output part of fixed attenuator (4) is connected with the fixed attenuation signal input part of mixer (5); The interference signal output of interference signal source (6) is connected with the interference signal input of mixer (5); The signal output part of mixer (5) is connected with the signal input part of splitter (7); A plurality of signal output parts of splitter (6) are connected with the signal receiving end of N receiver to be measured, the signal receiving end of reference receiver (8) respectively; The signal output part of N receiver to be measured is connected with the signal input part of oscilloscope (10) by No. two variable connectors (9) one by one with the signal output part of reference receiver (8); All be connected between N transmitter to be measured and reference transmitter (1) and the variable connector (2) by isometric radio frequency signal transmission line; All be connected between N receiver to be measured and reference receiver (8) and No. two variable connectors (9) by isometric digital data transmission line; N is a positive integer.
2. the system of a kind of test I SM frequency range communication products performance according to claim 1, it is characterized in that it also comprises a height incubator (11) and No. two height incubators (12), individual transmitter to be measured of described N and reference transmitter (1) are arranged in height incubator (11) No. one, and individual receiver to be measured of N and reference receiver (8) are arranged in height incubator (12) No. two.
3. based on the method for testing of the system of the described a kind of test I SM frequency range communication products performance of claim 1, it is characterized in that: it is realized by following steps:
Step 1, make reference transmitter (1) and reference receiver (8) in running order, under normal temperature condition, adopt the transmit signal power of power meter test reference transmitter (1); Under reference transmitter (1) access link, a N transmitter disconnection to be measured, reference receiver (8) access link, a N state that receiver to be measured disconnects, the attenuation of adjustable attenuator (3) is set to zero, adopt the received signal power of power meter test reference receiver (8);
It is poor that the received signal power of the transmit signal power of reference transmitter (1) and reference receiver (8) is done, obtain the basic loss value of link between reference transmitter (1) and the reference receiver (8), comprise the link loss value of adjustable attenuator (3) in the described link loss value;
Step 2, make all transmitters to be measured and receiver to be measured, oscilloscope (10) and interference signal source (6) in running order, under reference transmitter (1) access link, a N transmitter disconnection to be measured, reference receiver (8) access link, a N state that receiver to be measured disconnects, regulate the numerical value of adjustable attenuator (3), make the reference receiver (8) that observes by oscilloscope (10) be in the sensitivity state, the minimum signal strength value of described sensitivity for carrying out correct demodulation; The basic loss value sum that the pad value of adjustable attenuator this moment (3) and step 1 obtain is the total losses of link;
Adopt the transmitting power of the reference transmitter (1) of step 1 acquisition to deduct the link total losses, obtain the sensitivity of reference receiver (8), be called reference sensitivity;
Step 3, disconnect at reference transmitter access link, a N transmitter to be measured, under the state that a N receiver access link to be measured, reference receiver (8) disconnect, regulate adjustable attenuator (3), and pass through No. two variable connectors one by one with in each receiver access link to be measured, the sensitivity that records each receiver to be measured;
The reference sensitivity that the sensitivity of each receiver to be measured of obtaining is obtained with step 2 respectively relatively, and whether the difference of judging the sensitivity of each receiver to be measured and reference sensitivity respectively is within default error range, if the judgment is No, then the sensitivity of corresponding receiver to be measured is defective; If judged result is for being that then the sensitivity of Dui Ying receiver to be measured is qualified, execution in step four;
Step 4, the transmitting power of ISM band communication products to be measured detects: at reference receiver (8) access link, N receiver to be measured disconnects, N transmitter to be measured disconnects, under the state of reference transmitter (1) access link, regulate adjustable attenuator (3), make reference receiver (8) be in the sensitivity state, the pad value of the adjustable attenuator (3) of this moment is called the benchmark pad value, pass through a variable connector (2) then one by one with N transmitter access link to be measured, the pad value of the adjustable attenuator when test makes reference receiver (8) be in the sensitivity state respectively, by comparing the benchmark pad value on adjustable attenuator (3) of each transmitter and reference transmitter (1), determine the power output of each transmitter to be measured, and whether the power output difference of judging the power output of each transmitter to be measured and reference transmitter respectively is within default error range, if judged result is that then the transmitting power of Dui Ying transmitter to be measured is not defective; If judged result is for being that then the transmitting power of Dui Ying transmitter to be measured is qualified, execution in step five;
Step 5, the anti-co-channel interference Performance Detection of ISM band communication products to be measured: at reference receiver (8) and N receiver access link to be measured, N transmitter to be measured disconnects, under the state of reference transmitter (1) access link, adopt interference signal source (6) to launch the Wi-Fi frequency respectively, the signal of bluetooth frequency and ZigBee frequency, witness mark receiver (8) is at the Wi-Fi frequency, the reception error rate under bluetooth frequency and the ZigBee frequency, and under similarity condition, a measuring N receiver to be measured is at the Wi-Fi frequency, the reception error rate under bluetooth frequency and the ZigBee frequency, whether the difference of judging the error rate of each receiver to be measured and the error rate between the reference receiver is within default error amount, if judged result is not, then the anti-co-channel interference performance inconsistency lattice of Dui Ying receiver to be measured; If judged result is for being, then the anti-co-channel interference performance of Dui Ying receiver to be measured is qualified, and then execution in step six;
The anti-multiple access jamming performance of step 6, ISM band communication products to be measured detects: inserts mixer (5), a N receiver and reference receiver (8) simultaneously at N transmitter and reference transmitter (1) and inserts simultaneously under the state of splitter (7),
If transmitter that inserts in the link and reference transmitter (1) adopt the mode of code division multiple access, and when be direct sequence spread spectrum, then with N transmitter and the different spreading code of reference transmitter (1) distribution;
If transmitter that inserts in the link and reference transmitter (1) adopt the mode of code division multiple access, and when be frequency hopping, then with N transmitter and the different frequency hopping pattern of reference transmitter (1) distribution;
If transmitter that inserts in the link and reference transmitter (1) adopt FDMA, then N transmitter distributed different frequency ranges with reference transmitter (1);
If transmitter that inserts in the link and reference transmitter (1) adopt time-division multiple address system, then N transmitter distributed different time slots with reference transmitter (1);
Regulate adjustable attenuator (3), under different adjustable attenuator pad value conditions, by controlling a variable connector (2) and No. two variable connectors (9), respectively witness mark receiver (8) receives the error rate that transmits of transmitting of reference transmitter (1) and each transmitter, and with the described error rate as receiver error rate standard;
By controlling a variable connector (2) and No. two variable connectors (9), measure the error rate that transmits that each receiver to be measured receives transmitting of reference transmitter (1) and each transmitter respectively; And respectively the error rate that obtains is compared with corresponding receiver error rate standard, if comparative result exceeds default error range, then the anti-multiple access jamming performance of Dui Ying receiver to be measured is defective; If judged result is for being that then the anti-multiple access jamming performance of Dui Ying receiver to be measured is qualified, execution in step seven;
The high and low temperature resistance of step 7, ISM band communication products to be measured detects: carry out a step 2 respectively to step 7 under+60 ℃ and-40 ℃ of conditions, and judge whether to occur the receiver to be measured or the underproof receiver to be measured of anti-multiple access jamming performance of the underproof receiver to be measured of sensitivity, the underproof transmitter to be measured of transmitting power, anti-co-channel interference performance inconsistency lattice, if judged result is for being that then the high and low temperature resistance of these ISM band communication products to be measured is defective; If judged result is that then the high and low temperature resistance of these ISM band communication products to be measured is unqualified, execution in step eight then;
Step 8, judge whether ISM band communication products to be measured are the duplex communication product, if judged result is for being, then with the location swap of reference transmitter (1) with reference receiver (8), location swap with N transmitter to be measured and N receiver to be measured, repeat a step 1 to step 7, finish Performance Detection ISM band communication products to be measured; If judged result is then finished the Performance Detection to ISM band communication products to be measured for not.
4. the method for testing of a kind of test I SM frequency range communication products performance according to claim 3 is characterized in that the method for selecting of reference transmitter described in the step 1 (1) and reference receiver (8) is:
It comprises the reference transmitter (1) of non-duplex communication and the reference transmitter (1) and reference receiver (8) method for selecting of reference receiver (8) method for selecting and duplex communication, and reference transmitter of described non-duplex communication (1) and reference receiver (8) method for selecting are:
Steps A 1, the transmitter of selecting a non-duplex communication and the receiver of a non-duplex communication, normal temperature ,+transmitting power of this transmitter and the receiver sensitivity of this receiver are tested under 60 ℃ and-40 ℃ of three kinds of temperature, and judge whether test result satisfies predetermined index request, if judged result is for being, then with this transmitter as the reference transmitter, this receiver as the reference receiver, is finished reference receiver selected of the reference transmitter of non-duplex communication and non-duplex communication; If judged result is not, then execution in step A2;
Steps A 2, reselect the transmitter of a non-duplex communication and the receiver of a non-duplex communication, and return steps A 1;
The transmitter method for selecting of duplex communication is:
Step B1, select a transmitter of duplex communication and a receiver of duplex communication, normal temperature ,+transmitting power of this transmitter and the receiver sensitivity of this receiver are tested under 60 ℃ and-40 ℃ of three kinds of temperature, and judge whether test result satisfies predetermined index request, if judged result is for being, execution in step B2 then; If judged result is not, then execution in step B3;
Step B2, change this transmitter and this receiver location, and normal temperature ,+transmitting power of this transmitter and the receiver sensitivity of this receiver are tested under 60 ℃ and-40 ℃ of three kinds of temperature, and judge whether test result satisfies predetermined index request, if judged result is for being, then with this transmitter as the reference transmitter, this receiver as the reference receiver, is finished reference receiver selected of the reference transmitter of duplex communication and duplex communication; If judged result is not, then execution in step B3;
Step B3, reselect the transmitter of a duplex communication and the receiver of a duplex communication, and return step B1.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1777071A (en) * | 2004-11-15 | 2006-05-24 | 中兴通讯股份有限公司 | Channel coherence detection method for intelligent antenna base station |
| CN101605344A (en) * | 2009-07-01 | 2009-12-16 | 工业和信息化部通信计量中心 | A kind of WLAN/WAPI wireless device radio frequency/airborne performance test macro |
| CN101783708A (en) * | 2010-01-21 | 2010-07-21 | 哈尔滨工业大学 | Wireless parallel test system and test method based on ZigBee |
-
2011
- 2011-05-25 CN CN2011101366632A patent/CN102195728B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1777071A (en) * | 2004-11-15 | 2006-05-24 | 中兴通讯股份有限公司 | Channel coherence detection method for intelligent antenna base station |
| CN101605344A (en) * | 2009-07-01 | 2009-12-16 | 工业和信息化部通信计量中心 | A kind of WLAN/WAPI wireless device radio frequency/airborne performance test macro |
| CN101783708A (en) * | 2010-01-21 | 2010-07-21 | 哈尔滨工业大学 | Wireless parallel test system and test method based on ZigBee |
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| CN104869584B (en) * | 2015-05-21 | 2018-12-14 | 苏州科技学院 | A kind of wireless communication experimental bench based on attenuator and attenuating plate |
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