CN114499576A - Refined transceiving control method for electronic equipment - Google Patents
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- 238000002955 isolation Methods 0.000 claims abstract description 50
- 238000012360 testing method Methods 0.000 claims abstract description 23
- 238000013507 mapping Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 claims description 2
- 230000001629 suppression Effects 0.000 claims description 2
- 238000001228 spectrum Methods 0.000 abstract description 9
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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Abstract
The invention provides a refined transceiving control method for electronic equipment, which comprises the steps of building a transceiving test environment according to a proportional relation of 1:1, obtaining a mapping relation table of the influence level of associated transmitting equipment on receiving equipment in each frequency interval and the electromagnetic isolation of each receiving channel in each frequency interval in the transceiving test environment, namely measuring and evaluating the influence of the transmitting equipment on the receiving equipment in different transmitting frequency spectrums in advance, so that the transmitting equipment can call available receiving channels in the receiving equipment according to the mapping relation table when in actual work, and the uninterrupted work of the receiving equipment is realized; under the guidance of the transceiving control method provided by the invention, the receiving equipment can still work uninterruptedly in most frequency spectrums in the transmitting process of the transmitting equipment, so that the receiving time is increased, and the transceiving efficiency of the whole transceiving equipment is improved.
Description
Technical Field
The invention belongs to the technical field of electromagnetic compatibility, and particularly relates to a refined receiving and transmitting control method for electronic equipment.
Background
In radio electronic devices with overlapping transmitting and receiving operating frequency bands, in order to solve the problem of the influence of transmitting on receiving, a locking strategy and a windowing strategy are mainly adopted at present. The locking strategy is to switch the receiving device to a dormant state before the transmitting device transmits, so as to protect the whole receiving channel. The windowing strategy is to set a duration for the working time of the transmitting equipment, and when the working time is up, the transmitting equipment stops working immediately and activates the receiving equipment. Therefore, although the conventional mode can ensure the normal operation of the whole electronic equipment, the equipment is frequently switched between a locking state and a windowing state, the receiving and transmitting duty ratio is reduced, and the efficiency of the transmitting equipment and the efficiency of the receiving equipment cannot be fully exerted.
Disclosure of Invention
In order to solve the above problems, the present invention provides a refined transceiving control method for an electronic device, which greatly improves the available time of a receiving device and improves the working efficiency of the whole transceiving electronic device.
A refined transceiving control method for electronic equipment comprises the following steps:
s1: taking a real transceiving environment as a reference, and building a transceiving test environment according to a proportional relation of 1:1, wherein in the transceiving test environment, a transmitting end adopts a radio frequency signal source to simulate transmitting equipment, and a receiving end adopts a frequency spectrograph to measure the amplitude of radio frequency signals at each receiving channel of the receiving equipment;
s2: dividing a frequency band bandwidth B covered by the transmitting equipment into K-B/R frequency intervals according to a set resolution ratio R;
s3: respectively acquiring the electromagnetic isolation between transmitting equipment and each receiving channel in a transmitting and receiving test environment under the central frequency point of each frequency interval, and respectively taking the minimum value of the electromagnetic isolation of each receiving channel under each central frequency point as the electromagnetic isolation corresponding to each frequency interval;
s4: according to the electromagnetic isolation degree corresponding to each frequency interval, dividing the influence level of the transmitting equipment on the receiving equipment under each frequency interval into a damage level, a saturation level, a harmonic level and a main frequency level, wherein if the influence level is the damage level, the transmitting equipment and each receiving channel cannot work simultaneously;
s5: constructing a mapping relation table according to the influence level of the transmitting equipment on the receiving equipment in each frequency interval and the electromagnetic isolation of each receiving channel in each frequency interval;
s6: in a real transceiving environment, when the transmitting device transmits a radio frequency signal to the outside, a receiving channel with the electromagnetic isolation degree larger than a set value at the current frequency point is selected from the mapping relation table to receive the radio frequency signal.
Further, the specific steps of respectively obtaining the electromagnetic isolation between the transmitting device and each receiving channel in the transceiving test environment at each frequency point are as follows:
ΔPi＝Pt-Pri
pt is the transmission power of the transmitting device, Pri is the amplitude of the radio frequency signal at the ith receiving channel of the receiving device at the current frequency point, Δ Pi is the electromagnetic isolation between the transmitting device and the ith receiving channel at the current frequency point, i is 1,2, …, N is the number of receiving channels of the receiving device.
Further, the method for dividing the influence level of the transmitting device on the receiving device at each frequency point specifically includes:
the electromagnetic isolation corresponding to each frequency point is respectively marked as delta P (K), wherein K is 1,2, …, K;
if Pt-delta P (k) > Prm and Pt is the transmitting power of the transmitting equipment and Prm is the maximum receiving energy which can be received by the receiving equipment, the influence level is a damage level;
if Pt-delta P (k) -Ps > Dr, and Ps is the sensitivity of the receiving equipment, and Dr is the dynamic range of the receiving equipment, indicating that the influence level is a saturation level;
if Pt-delta P (k) > Q and Pt-delta P (k) < Ps and Q is the harmonic suppression capability value of the power amplifier of the receiving equipment, the influence level is the harmonic level;
if Pt- Δ P (k) < Q, the effect grade is the dominant frequency grade.
Further, when the frequency point f of the transmitting device is non-integer, firstly, rounding the frequency point f [ f +0.5], wherein [ ] represents rounding operation; and then according to the frequency interval in which the [ f +0.5] falls, selecting a receiving channel with the electromagnetic isolation degree larger than a set value from the mapping relation table to receive the radio-frequency signal under the frequency point [ f +0.5 ].
And further, displaying the mapping relation table by adopting display control software, wherein the mapping relation table displays the influence level of the transmitting equipment on the receiving equipment in each frequency interval and the electromagnetic isolation degree corresponding to each receiving channel in each frequency interval, so that a tester can directly judge whether the transmitting equipment and the receiving equipment can work simultaneously or not under the current frequency point according to the influence level, if so, the tester directly selects the receiving channel which can work simultaneously with the transmitting equipment according to the electromagnetic isolation degree corresponding to each receiving channel under the current frequency point, and then adopts the selected receiving channel to receive the radio-frequency signal currently sent by the transmitting equipment in real time.
Has the advantages that:
1. the invention provides a refined transceiving control method for electronic equipment, which comprises the steps of building a transceiving test environment according to a proportional relation of 1:1, obtaining a mapping relation table of the influence level of associated transmitting equipment on receiving equipment in each frequency interval and the electromagnetic isolation of each receiving channel in each frequency interval in the transceiving test environment, namely measuring and evaluating the influence of the transmitting equipment on the receiving equipment in different transmitting frequency spectrums in advance, so that the transmitting equipment can call available receiving channels in the receiving equipment according to the mapping relation table when in actual work, and the uninterrupted work of the receiving equipment is realized; under the guidance of the transceiving control method provided by the invention, the receiving equipment can still work uninterruptedly in most frequency spectrums in the transmitting process of the transmitting equipment, so that the receiving time is increased, and the transceiving efficiency of the whole transceiving equipment is improved.
2. The invention provides a refined receiving and sending control method for electronic equipment, which adopts display control software to display a mapping relation table, and is convenient for testers to check and quickly call a currently available receiving channel.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a process diagram of impact segment labeling according to the present invention.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
The invention aims to provide a fine locking strategy aiming at the insufficient frequent switching of the receiving and transmitting equipment in a locking state and a windowing state, wherein the fine locking strategy is that when the transmitting equipment works, the receiving equipment continuously works, senses a transmitting frequency spectrum, and marks frequency point positions where the transmitting equipment and the receiving equipment can simultaneously work, so that in the transmitting process, the receiving equipment can still continuously work in most frequency spectrums, the receiving time is prolonged, and the transmitting and receiving efficiency of the whole transmitting and receiving equipment is improved.
Specifically, as shown in fig. 1, a refined transceiving control method for an electronic device is characterized by comprising the following steps:
s1: and taking a real transceiving environment as a reference, and building a transceiving test environment according to a 1:1 proportional relation, wherein in the transceiving test environment, a transmitting end adopts a radio frequency signal source to simulate transmitting equipment, and a receiving end adopts a frequency spectrograph to measure the amplitude of radio frequency signals at each receiving channel of the receiving equipment.
It should be noted that the electromagnetic isolation between the transmitting device and the receiving device is a priori condition for determining whether the fine locking strategy can be executed. If the electromagnetic isolation between the two is poor, when the transmitting equipment transmits, the whole receiving channel is completely saturated when the transmitting equipment transmits, all the received data are completely unavailable, and circuit devices of the receiving equipment are irreversibly physically damaged when the transmitting equipment transmits. Although the installation distance between the transmitting end of the transmitting device and the receiving end of the receiving device is increased as much as possible at the beginning of the design of the electronic system, the electromagnetic isolation between the transmitting device and the receiving device is difficult to analyze theoretically due to the practical constraints of installation space, magnitude of transmitting power and the like. Therefore, the invention builds a test environment according to the proportional relation of the test environment and the mounting equipment 1:1, and the test environment is used for testing the electromagnetic isolation between the transmitting equipment and the receiving equipment. The tested data result truly reflects the electromagnetic isolation condition between the transmitting equipment and the receiving equipment, and a scientific test conclusion is provided for the receiving channel influence magnitude required by the subsequent fine locking execution.
S2: and dividing the frequency band bandwidth B covered by the transmitting equipment into K-B/R frequency intervals according to the set resolution R.
S3: and respectively acquiring the electromagnetic isolation between the transmitting equipment and each receiving channel in the transmitting and receiving test environment under the central frequency point of each frequency interval, and respectively taking the minimum value of the electromagnetic isolation of each receiving channel under each central frequency point as the electromagnetic isolation corresponding to each frequency interval.
That is, according to the above test environment, the transmitting device is simulated by using the signal source, the transmitting power is Pt, and the receiving end measures the corresponding transmitting signal amplitude Pr by using the spectrometer, so that the electromagnetic isolation between the transmitting device and the receiving device is Δ P ═ Pt-Pr. Since the receiving device has a plurality of receiving channels, assuming that the number of receiving channels is N, the electromagnetic isolation of each channel of the transmitting device and the receiving device is Δ Pi — Pt (1 ≦ i ≦ N). The electromagnetic isolation is tested, namely the influence of the transmitting equipment on the receiving equipment during transmitting is evaluated, and the smaller the electromagnetic isolation is, the larger the influence on the receiving equipment is. In order to avoid damage to the receiving device caused by transmission, the electromagnetic isolation between the receiving device and the transmitting device is the minimum value of the electromagnetic isolation of each receiving channel, namely, the minimum value of the electromagnetic isolation is delta P (k) min (delta Pi) in each frequency interval. Therefore, the electromagnetic isolation data set U { (Fk, Δ p (K)) | Fk is the transmission frequency point included in the K frequency intervals, Δ p (K) is the electromagnetic isolation corresponding to the K-th frequency interval, and 1 ≦ K } is set between the transmitting device and the receiving device corresponding to each frequency interval.
S4: according to the electromagnetic isolation degree corresponding to each frequency interval, the influence level of the transmitting equipment on the receiving equipment in each frequency interval is divided into a damage level, a saturation level, a harmonic level and a main frequency level, wherein if the influence level is the damage level, the transmitting equipment and each receiving channel cannot work simultaneously.
That is, the present invention classifies the influence level of the transmitting device on the receiving device into a damage level, a saturation level (including a receiving channel full saturation state and a spurious state), a harmonic level, and a main frequency level, wherein the damage level is that the energy of the transmitting signal received by the receiving device is greater than the maximum receiving energy Prm that the receiving device can receive, that is, P ═ Pt- Δ P (k) > Prm.
The saturation stage is that the energy of the transmitting signal received by the receiving equipment exceeds the dynamic range of the signal, namely P ═ Pt- Δ P (k) -Ps > Dr; dr refers to the dynamic range of the receiving equipment, and the dynamic range of the receiving equipment is an important index for measuring the performance of the receiving equipment; dynamic range refers to the range of input signal sizes that enable a receiving device to detect a received signal without distorting the received signal, typically measured by the input signal power. If the received signal is too large, distortion of an amplifier and noise are introduced, and overload saturation occurs in a receiving device; the dynamic range refers to the maximum and minimum range, generally denoted by Dr symbol, expressed in dB, and Dr is 10lg (Pmax/Pmin), where Pmax is the maximum power of the input signal and Pmin is the minimum power of the input signal.
The harmonic stage means that only the receiving channel corresponding to Δ P (k) receives the transmitting signal energy and the corresponding harmonic signal, and has no influence on other receiving channels, so that P is Pt- Δ P (k) > Q and P is Pt- Δ P (k) -Ps < Dr;
the main frequency stage means that the receiving device corresponding to Δ P (k) receives only the energy of the main frequency signal of the transmitted signal, and the other receiving channels have no influence, i.e. P ═ Pt- Δ P (k) < Q.
The relationship between the influence level and the fine locking is shown in table 1, and the fine locking executed in each frequency interval when the transmitting equipment works is obtained according to the electromagnetic shielding data set U.
TABLE 1 relationship table of impact level and fine latch execution
| Serial number | Impact grade | Whether fine latching can be performed |
| 1 | Level of physical damage | No (not working at the same time) |
| 2 | Saturation stage | Is (part of receiving channels can work simultaneously) |
| 3 | Harmonic stage | Is (part of receiving channels can work simultaneously) |
| 4 | Master frequency stage | Is (part of receiving channels can work simultaneously) |
S5: and constructing a mapping relation table according to the influence level of the transmitting equipment on the receiving equipment in each frequency interval and the electromagnetic isolation of each receiving channel in each frequency interval.
S6: in a real transceiving environment, when the transmitting device transmits a radio frequency signal to the outside, a receiving channel with the electromagnetic isolation degree larger than a set value at the current frequency point is selected from the mapping relation table to receive the radio frequency signal.
It should be noted that, when the transmission frequency point is a non-integer f, the fine locking condition is the same as [ f +0.5], where [ ] represents a rounding operation, that is, the rounding operation [ f +0.5] is performed on the frequency point f, and then according to the frequency interval in which [ f +0.5] falls, a receiving channel with the electromagnetic isolation greater than a set value is selected from the mapping relation table to receive the radio frequency signal at the frequency point [ f +0.5 ]; and obtaining the fine locking execution condition and the influence level of the receiving equipment corresponding to each transmitting frequency point in the working frequency band according to the calculation.
Furthermore, the present invention may also display the mapping relationship table by using display control software, where the mapping relationship table displays the influence level of the transmitting device on the receiving device in each frequency interval and the electromagnetic isolation corresponding to each receiving channel in each frequency interval, so that a tester directly judges whether the transmitting device and the receiving device can simultaneously operate at a current frequency point according to the influence level, if so, the tester directly selects a receiving channel capable of simultaneously operating with the transmitting device according to the electromagnetic isolation corresponding to each receiving channel at the current frequency point, and then receives the radio frequency signal currently transmitted by the transmitting device by using the selected receiving channel in real time.
In addition, when the frequency point transmitted by the transmitting equipment can execute a fine locking strategy, the affected part is clearly marked on the receiving display control software. As shown in fig. 2, the present invention divides the working frequency band into a plurality of sub-bands according to a certain bandwidth, so that the labeled object has more targeting property, and the fine locking degree is really achieved. Meanwhile, according to the influence level corresponding to each frequency point obtained in the early stage and the fine locking execution condition in each sub-band, the emission influence segments in the sub-band are marked in an automatic and manual intervention mode, so that the whole marking process has higher robustness. For the impact level situation on the receiving device, the objects to be labeled are shown in table 2.
TABLE 2 labeling objects
It should be noted that when the receiving device influence level is the saturation level, the receiving channel appears to be fully saturated in band or has a partial spur point in band. The invention judges the fully saturated state or the spurious state of the channel according to the proportion of the large signal exceeding the dynamic requirement of the receiving equipment in the sub-band. If the large signal, namely the proportion of the signal which causes the saturation and damage of the receiver is more than 10%, the sub-band is considered to be in a full saturation state, and all the sub-bands are marked as receiving invalid areas at the moment; if the large signal proportion is less than 10%, the sub-band is considered to be in a stray state. When the receiving channel is in a stray state, which points are difficult to judge as stray points according to the energy spectrum. When the influence level on the receiving equipment is harmonic level, the transmitting main frequency and the harmonic are automatically marked. When the influence level on the receiving equipment is the dominant frequency level, the transmitting dominant frequency is automatically marked out, so that the tester can conveniently check and use the transmitting dominant frequency.
A detailed transceiving control method for an electronic device according to the present invention is further described below by taking a certain electronic system of a U-band as an example.
Firstly, a test scene is established, an electromagnetic isolation test between receiving equipment and transmitting equipment is carried out according to the 1MHz stepping, and accordingly the influence level of each frequency point transmission on the receiving equipment and the fine locking execution condition are evaluated. The results were: the fine locking can be executed for 96% of the frequency points, wherein 18% of the frequency points are in a saturated level, 60% of the frequency points are in a harmonic level, and 18% of the frequency points are in a main frequency level. And subsequently, the correctness of the influence level is verified on the mounting equipment, and the verification result is consistent with the evaluation result.
In a conventional lock-out and windowing strategy, it is assumed that the ratio of time of transmission to reception is 10:2, i.e. 10 seconds of transmission (lock-out time) and 2 seconds of reception (windowing time). From the above-mentioned influence level data, the proportion of the influence level of transmission on reception at the harmonic level and below is 78%, and at this proportion, the reception device can provide a reception result with a reliability equivalent to that under the conventional windowing strategy. The working time of the receiving device for providing a high-reliability receiving result within 12 seconds is 10 multiplied by 0.78+2 to 9.8 seconds, and the invention obviously improves the efficiency of the receiving device and the transmitting device.
Therefore, the invention adopts the strategy of 'soft locking' by measuring and evaluating the emission frequency spectrum of the emission equipment and the influence of the emission frequency spectrum on the receiving equipment, thereby greatly improving the available time of the receiving equipment and improving the working efficiency of the whole electronic equipment compared with the prior full-band hard locking.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it will be understood by those skilled in the art that various changes and modifications may be made herein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. A refined transceiving control method for electronic equipment is characterized by comprising the following steps:
s1: taking a real transceiving environment as a reference, and building a transceiving test environment according to a proportional relation of 1:1, wherein in the transceiving test environment, a transmitting end adopts a radio frequency signal source to simulate transmitting equipment, and a receiving end adopts a frequency spectrograph to measure the amplitude of radio frequency signals at each receiving channel of the receiving equipment;
s2: dividing a frequency band bandwidth B covered by the transmitting equipment into K-B/R frequency intervals according to a set resolution ratio R;
s3: respectively acquiring the electromagnetic isolation between transmitting equipment and each receiving channel in a transmitting and receiving test environment under the central frequency point of each frequency interval, and respectively taking the minimum value of the electromagnetic isolation of each receiving channel under each central frequency point as the electromagnetic isolation corresponding to each frequency interval;
s4: according to the electromagnetic isolation degree corresponding to each frequency interval, dividing the influence level of the transmitting equipment on the receiving equipment under each frequency interval into a damage level, a saturation level, a harmonic level and a main frequency level, wherein if the influence level is the damage level, the transmitting equipment and each receiving channel cannot work simultaneously;
s5: constructing a mapping relation table according to the influence level of the transmitting equipment on the receiving equipment in each frequency interval and the electromagnetic isolation of each receiving channel in each frequency interval;
s6: in a real transceiving environment, when the transmitting device transmits a radio frequency signal to the outside, a receiving channel with the electromagnetic isolation degree larger than a set value at the current frequency point is selected from the mapping relation table to receive the radio frequency signal.
2. The method as claimed in claim 1, wherein the step of obtaining the electromagnetic isolation between the transmitter and each receiver in the transceiving test environment at each frequency point comprises:
ΔPi＝Pt-Pri
pt is the transmission power of the transmitting device, Pri is the amplitude of the radio frequency signal at the ith receiving channel of the receiving device at the current frequency point, Δ Pi is the electromagnetic isolation between the transmitting device and the ith receiving channel at the current frequency point, i is 1,2, …, N is the number of receiving channels of the receiving device.
3. The method as claimed in claim 1, wherein the method for classifying the impact level of the transmitting device on the receiving device at each frequency point comprises:
the electromagnetic isolation corresponding to each frequency point is respectively marked as delta P (K), wherein K is 1,2, …, K;
if Pt-delta P (k) > Prm and Pt is the transmitting power of the transmitting equipment and Prm is the maximum receiving energy which can be received by the receiving equipment, the influence level is a damage level;
if Pt-delta P (k) -Ps > Dr, and Ps is the sensitivity of the receiving equipment, and Dr is the dynamic range of the receiving equipment, indicating that the influence level is a saturation level;
if Pt-delta P (k) > Q and Pt-delta P (k) < Ps and Q is the harmonic suppression capability value of the power amplifier of the receiving equipment, the influence level is the harmonic level;
if Pt- Δ P (k) < Q, the effect grade is the dominant frequency grade.
4. The method as claimed in claim 1, wherein when the frequency f of the transmitter is non-integer, the rounding operation [ f +0.5] is performed on the frequency f, where [ ] denotes the rounding operation; and then according to the frequency interval in which the [ f +0.5] falls, selecting a receiving channel with the electromagnetic isolation degree larger than a set value from the mapping relation table to receive the radio-frequency signal under the frequency point [ f +0.5 ].
5. The fine transceiving control method for electronic devices according to claim 1, wherein display control software is used to display the mapping relationship table, wherein the mapping relationship table displays the influence level of the transmitting device on the receiving device in each frequency interval and the electromagnetic isolation corresponding to each receiving channel in each frequency interval, so that a tester can directly judge whether the transmitting device and the receiving device can simultaneously operate at a current frequency point according to the influence level, if so, the tester directly selects a receiving channel capable of simultaneously operating with the transmitting device according to the electromagnetic isolation corresponding to each receiving channel at the current frequency point, and then uses the selected receiving channel to receive the radio frequency signal currently transmitted by the transmitting device in real time.
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