CN117856935A - Device and method for testing transmitting circuit of resistivity measurement while drilling system - Google Patents
Device and method for testing transmitting circuit of resistivity measurement while drilling system Download PDFInfo
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Abstract
The invention discloses a device for testing a transmitting circuit of a resistivity measurement while drilling system, which comprises: the signal acquisition module is used for acquiring output signals of all test points in the transmitting circuit; the signal processing module is used for processing the output signals of the test points; and the test terminal is used for judging the working states of different tested units according to the processing results of the output signals of the test points so as to perform fault positioning. The invention can quickly and accurately master the working state of the transmitting circuit, and has simple and convenient operation and low test cost.
Description
Technical Field
The invention relates to the technical field of resistivity measurement while drilling, in particular to a device and a method for testing a transmitting circuit of a resistivity measurement while drilling system.
Background
A resistivity while drilling measurement system transmitter circuit for use in a resistivity while drilling measurement system, the transmitter circuit comprising: the power amplifier comprises an RS485 communication circuit, a master control circuit, a signal generation circuit, a switch array group and a power amplifying circuit. The transmitting circuit is provided with two paths of output channels, and the frequency of the output signals and the switching of the output channels are controlled by instructions sent by the RS485 communication circuit. The output signal is generated by the signal generating circuit, the selection and switching of the transmitting channel are realized through the switch array group, and finally, the output signal is output to an antenna unit of the resistivity measurement while drilling system through the power amplifying circuit.
Currently, testing of the transmitting circuit requires connection to other circuits of the resistivity while drilling measurement system to be able to achieve. In view of the large number of burn-in tests and temperature tests required in the fabrication of resistivity measurement while drilling systems, a separate and rapid test device for the transmitting circuit is required to improve the test efficiency. Meanwhile, after the product is put into use, when the resistivity measurement system while drilling fails, a quick and simple testing device for positioning the failure of the transmitting circuit is also needed.
Disclosure of Invention
The invention aims to provide a device for performing functional test on a transmitting circuit of a resistivity measurement while drilling system so as to realize independent test on the transmitting circuit, improve test efficiency and simultaneously rapidly realize positioning and troubleshooting of faults.
To solve the above technical problems, an embodiment of the present invention provides an apparatus for testing a transmitting circuit of a resistivity measurement while drilling system, including: the signal acquisition module is used for acquiring output signals of all test points in the transmitting circuit; the signal processing module is used for processing the output signals of the test points; and the test terminal is used for judging the working states of different tested units according to the processing results of the output signals of the test points so as to perform fault positioning.
Preferably, the test points are respectively arranged at the output end of the signal generating circuit, the multiplexing output end of the switch group array and the multiplexing output end of the power amplifying circuit in the transmitting circuit.
Preferably, the signal processing module is used for extracting the frequency and the amplitude of the output signal of each path of test point; and the test terminal is used for respectively judging the working states of the signal generating circuit, the switch group array and the power amplifying circuit according to the frequency and the amplitude of the signal output by each path of test point, wherein when the signal is abnormal, the abnormal tested unit and the specific fault position in the unit are positioned.
Preferably, the test terminal is configured to calculate insertion loss of the switch group array according to frequency and amplitude of an output signal of each test point, and determine a working state of the switch group array and perform fault location by combining a principle that only one channel of the switch group array enables output.
Preferably, the test terminal is further configured to calculate an amplification gain of the power amplification circuit according to a frequency and an amplitude of an output signal of each test point, and determine a working state of the power amplification circuit and perform fault location by combining a principle that only one channel of the power amplification circuit enables output.
Preferably, the signal acquisition module is further configured to perform analog-to-digital conversion processing on the acquired output signals of the test points, so as to send the output digital signals of the test points to the signal processing module.
Preferably, the apparatus further comprises: the first communication module is arranged between the signal processing module and the test terminal; and the second communication module is connected with the test terminal and is in communication connection with the communication module in the transmitting circuit.
Preferably, the second communication module is further configured to transmit a designated channel transmission enabling instruction sent by the test terminal to the transmitting circuit.
Preferably, the test terminal adopts computer equipment, and the first communication module adopts a USB communication module; or the test terminal adopts a mobile terminal, and the first communication module adopts a wireless communication module.
In another aspect, there is provided a method for testing a transmitting circuit of a resistivity measurement while drilling system, the method being implemented with an apparatus as described above, wherein the method comprises: collecting output signals of all test points in the transmitting circuit; processing the output signals of all the test points; and judging the working states of different tested units according to the processing results of the output signals of the test points so as to perform fault positioning.
One or more embodiments of the above-described solution may have the following advantages or benefits compared to the prior art:
the invention provides a device and a method for testing a transmitting circuit of a resistivity measurement while drilling system. Compared with indirect testing in the resistivity measurement while drilling system, the transmitting circuit testing device constructed by the embodiment of the invention is used for performing functional testing on the transmitting circuit of the resistivity measurement while drilling system and directly measuring the internal circuit of the transmitting circuit, can quickly and accurately master the working state of the transmitting circuit, and has the advantages of simple and convenient operation and low testing cost.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention, without limitation to the invention. In the drawings:
FIG. 1 is a schematic diagram of an apparatus for testing a transmitting circuit of a resistivity while drilling system according to an embodiment of the present application.
FIG. 2 is a schematic diagram of a test timing of an apparatus for testing a transmit circuit of a resistivity while drilling system according to an embodiment of the present application.
FIG. 3 is a schematic diagram of steps of a method for testing a transmit circuit of a resistivity while drilling system in accordance with an embodiment of the present application.
Detailed Description
The following will describe embodiments of the present invention in detail with reference to the drawings and examples, thereby solving the technical problems by applying technical means to the present invention, and realizing the technical effects can be fully understood and implemented accordingly. It should be noted that, as long as no conflict is formed, each embodiment of the present invention and each feature of each embodiment may be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.
Additionally, the steps illustrated in the flowcharts of the figures may be performed in a computer system, such as a set of computer executable instructions. Also, while a logical order is depicted in the flowchart, in some cases, the steps depicted or described may be performed in a different order than presented herein.
A resistivity while drilling measurement system transmitter circuit for use in a resistivity while drilling measurement system, the transmitter circuit comprising: the power amplifier comprises an RS485 communication circuit, a master control circuit, a signal generation circuit, a switch array group and a power amplifying circuit. The transmitting circuit is provided with two paths of output channels, and the frequency of the output signals and the switching of the output channels are controlled by instructions sent by the RS485 communication circuit. The output signal is generated by the signal generating circuit, the selection and switching of the output channel are realized through the switch array group, and finally, the output signal is output to an antenna unit of the resistivity measurement while drilling system through the power amplifying circuit.
Currently, testing of the transmitting circuit requires connection to other circuits of the resistivity while drilling measurement system to be able to achieve. In view of the large number of burn-in tests and temperature tests required in the fabrication of resistivity measurement while drilling systems, a separate and rapid test device for the transmitting circuit is required to improve the test efficiency. Meanwhile, after the product is put into use, when the resistivity measurement system while drilling fails, a quick and simple testing device for positioning the failure of the transmitting circuit is also needed.
Accordingly, to address one or more of the above-mentioned problems, embodiments of the present application provide an apparatus and method for testing a transmitting circuit of a resistivity measurement while drilling system. According to the system and the method, each tested unit (RS 485 communication circuit, signal generation circuit, switch array group, power amplification 1 and power amplification 2) of the transmitting circuit of the resistivity measurement while drilling is subjected to function test one by one. The invention can perform direct functional test on each tested unit, accurately and quickly determine the fault position of the transmitting circuit and complete the functional test of the transmitting circuit. The invention can be used in the product manufacturing process and the later product maintenance process, and improves the test efficiency.
FIG. 1 is a schematic diagram of an apparatus for testing a transmitting circuit of a resistivity while drilling system according to an embodiment of the present application. As shown in fig. 1, an apparatus for testing a transmitting circuit of a resistivity measurement while drilling system according to an embodiment of the present invention (hereinafter referred to as a "transmitting circuit testing apparatus") includes: the system comprises a signal acquisition module, a signal processing module and a test terminal. It should be noted that, the transmitting circuit to be tested according to the embodiment of the present invention includes a plurality of units to be tested, for example: the power amplifier comprises a signal generating circuit, a switch array group and a power amplifying circuit.
The signal processing module is connected with the signal acquisition module, and the test terminal is connected with the signal processing module. The signal acquisition module is used for acquiring output signals of all test points in the transmitting circuit to be tested. The signal processing module is used for processing the output signals of the test points. The test terminal is used for judging the working states of different tested units according to the processing results of the signals output by the test points, so that fault positioning is performed. In addition, the test terminal is also used for displaying the test result of the transmitting circuit.
Further, in the embodiment of the present invention, test points at different positions are respectively disposed at an output end of a signal generating circuit, a multiplexing output end of a switch group array, and a multiplexing output end of a power amplifying circuit in a transmitting circuit to be tested. Referring to fig. 1, if a transmission circuit to be tested has two transmission channels, test points are set at an output terminal 1 of a signal generating circuit, an output terminal 2 of the signal generating circuit, an output terminal 1 of a switch array group, an output terminal 2 of the switch array group, an output terminal 1 of a power amplifying circuit, and an output terminal 2 of the power amplifying circuit.
The signal acquisition module is further used for acquiring output analog signals of all test points in the transmitting circuit, performing analog-to-digital conversion processing, and transmitting digital quantized signals of all test points to the signal processing module after converting all analog signals into digital signals.
Further, the signal processing module is used for extracting the frequency and the amplitude of the output signals of each path of test points according to the output signals of each path of test points. Specifically, the signal processing module is used for performing digital filtering on each path of input digital original signal after obtaining each path of test point digital signal, and performing FFT operation, so as to complete the calculation of the frequency and amplitude value of each path of signal.
Further, the test terminal is used for respectively judging the working states of different tested units in the transmitting circuit to be tested according to the frequency and the amplitude of the output signal of each path of test point, and completing fault positioning. Specifically, the test terminal is used for respectively judging the working states of the signal generating circuit, the switch group array and the power amplifying circuit according to the frequency and the amplitude of the extracted output signals of each path of test points and according to the frequency and the amplitude of the signals of each path of test points. When detecting that the occurrence frequency and/or amplitude of one or a plurality of signals are abnormal, positioning the abnormal tested unit and the specific fault position in the abnormal unit.
In a first embodiment, the test terminal is configured to compare the frequencies of the output signals of the signal generating circuit with the normal frequency ranges respectively according to the frequencies and the amplitudes of the output signals of each circuit test point, and compare the amplitudes of the output signals of the signal generating circuit with the normal amplitude ranges respectively, determine the working state of the signal generating circuit unit, and perform fault location. Specifically, if the transmitting circuit unit has output, the signal generating circuit unit effectively outputs, if the currently output frequency value is in the normal range and the output amplitude value pages are in the normal range, the working state of the signal generating circuit unit is normal, otherwise, the working state of the signal generating circuit is abnormal. Thus, the embodiment of the invention not only can carry out fault location on the abnormality of the signal generating circuit unit, but also can carry out fault location on the abnormal channel inside the signal generating circuit.
In a second embodiment, the test terminal is configured to calculate insertion loss of the switch group array unit according to frequency and amplitude of the output signal of each test point, and determine an operating state of the switch group array unit by combining a principle that only one channel of the switch group array unit enables output, whether the insertion loss value of the current enabled channel meets a threshold requirement, whether an output end where the emission enabled channel of the current switch group array unit is located has output signals, and whether an output end where the emission disabled channel of the current switch group array unit is located has output signals, and perform fault location. Specifically, since the switch array group unit has only one channel enabling output when in operation, the other channel disabling output. When the insertion loss value of the enabling channel meets the requirement and the output channel is forbidden to output no signal, the working state of the switch array group unit can be judged to be normal; otherwise, the working state of the switch array group unit is abnormal. Therefore, the embodiment of the invention not only can perform fault location on the abnormality of the switch array group unit, but also can perform fault location on the abnormal channel inside the switch array group unit.
Further, the test terminal calculates the insertion loss value of the switch array group unit according to the following expression:
RL0＝-20lg(Vt2/Vt1)
where RL0 represents the insertion loss value of the current enable channel, vt2 represents the amplitude value of the signal output by the transmit enable channel of the switch array group unit, and Vt1 represents the signal amplitude value output by the transmit enable channel of the signal generating circuit.
In a third embodiment, the test terminal is further configured to calculate an amplification gain of the power amplification circuit unit according to the frequency and the amplitude of the output signal of each test point, and determine the working state of the power amplification circuit unit and perform fault location by combining the principle that the power amplification circuit unit has only one channel to enable output, whether the amplification gain value of the current enabling channel meets the threshold requirement, whether the output end where the emission enabling channel of the current power amplification circuit unit is located has an output signal output, and whether the output end where the emission disabling channel of the current power amplification circuit unit is located has an output signal output. Specifically, if the to-be-tested transmitting circuit has two paths of outputs, namely two power amplification modules, each power amplification module corresponds to one output end, when the to-be-tested transmitting circuit works, only one channel enables the effective output of the channel, and the other channel disables the output. When the output of the transmitting channel 1 and the output of the transmitting channel 2 are respectively tested, when the amplification gain of the enabling channel meets the requirement and the output channel is forbidden to output no signal, the working state of the power amplifying circuit unit can be judged to be normal; otherwise, the working state of the power amplifying circuit unit is abnormal. Thus, the embodiment of the invention not only can carry out fault location on the abnormality of the power amplification circuit unit, but also can carry out fault location on the abnormal channel inside the power amplification circuit unit.
Further, the test terminal calculates an amplification gain value of the power amplification circuit unit according to the following expression:
RL1＝-20lg(Vp2/Vp1)
wherein RL1 represents the amplification gain value of the current enabling channel, vp2 represents the amplitude value of the signal output by the emission enabling channel of the power amplifying circuit unit, and Vp1 represents the amplitude value of the signal output by the emission enabling channel of the switch array group unit.
In addition, the transmitting circuit testing device according to the embodiment of the invention further comprises: a first communication module and a second communication module. As shown in fig. 1, the first communication module is disposed between the signal processing module and the test terminal. The first communication module is used for realizing communication between the signal processing module and the test terminal. Specifically, the first communication module can send the frequency and the amplitude of the output signal of each path of test point generated by the signal processing module to the test terminal, so that the test terminal displays the frequency and the amplitude of the output signal of each path of test point, and calculates and obtains a corresponding test result of the transmitting circuit. In the embodiment of the invention, the test result of the transmitting circuit includes but is not limited to: and the tested units with abnormal working states correspond to fault positioning results.
In the embodiment of the invention, the terminal equipment can adopt a mobile terminal or computer equipment. In one embodiment, the test terminal employs a computer device and the second communication module employs a USB communication module. In another embodiment, the test terminal is a mobile terminal and the second communication module is a wireless communication module.
With continued reference to fig. 1, the second communication module is connected to the test terminal. Further, the second communication module is in communication connection with a communication module in the transmitting circuit (e.g., an RS485 communication module in the transmitting circuit to be tested). In the embodiment of the invention, the test terminal sends the control instruction for switching the emission enabling channels of the emission circuit to be tested, and at this time, the second communication module is also used for transmitting the emission enabling instruction (used for designating which channel in the emission circuit realizes signal output and other channels forbid output) of the designated channel sent by the test terminal to the emission circuit, so that the emission circuit controls the specific channel to realize signal output and forbids other channels to realize signal output under the action of the emission enabling instruction of the designated channel.
In the embodiment of the invention, the second communication module is matched with the communication protocol of the communication module in the transmitting circuit to be tested.
FIG. 2 is a schematic diagram of a test timing of an apparatus for testing a transmit circuit of a resistivity while drilling system according to an embodiment of the present application. The following describes a test flow of the transmitting circuit testing device according to the embodiment of the present invention with reference to fig. 2. If the transmitting circuit has two output channels, two working states are needed, namely, the output test of the transmitting channel 1 and the output test of the transmitting channel 2, wherein the test flow is as follows:
the first step, the testing device sends the channel 1 output instruction to the transmitting circuit through the communication interface of the second communication module, after the transmitting circuit receives the instruction, the internal switch array group channel 1 enables output, the sinusoidal signal with the frequency of F is output, and the switch array group channel 2 prohibits output. At this time, the transmitting circuit outputs a signal only from the transmitting channel 1, and the transmitting channel 2 prohibits the output.
And secondly, the testing device respectively acquires the output signal of the signal generating circuit, the output signal of the switch array group channel 1, the output signal of the switch array group channel 2, the output signal of the transmitting channel 1 (the power amplifying module 1) and the output signal of the transmitting channel 2 (the power amplifying module 2). The signal processing circuit controls the signal acquisition circuit to acquire and record 5 paths of input signals for 10 seconds, and then signal frequency and amplitude values are calculated respectively. After the signal processing circuit finishes calculation, the calculation result is sent to the test terminal through the first communication circuit.
And thirdly, the test terminal displays the calculation result in a test window and compares the calculation result with a reference value to judge whether the detection result is normal or not.
Fourth, repeating the first operation, and performing the output test of the emission channel 2.
The test result judging flow of the test terminal is as follows:
s1, judging whether a signal generating circuit works normally or not: comparing whether the frequency of the output signal of the signal generating circuit is in a normal range or not; comparing whether the amplitude value output by the signal generating circuit is in a normal range or not; both values are normal indicating that the signal generating circuit is working properly, otherwise, indicating that the signal generating circuit is working improperly.
S2, judging whether the switch array group works normally or not: calculating the insertion loss value of the switch array group; when the switch array group works, only one channel enables output, the other channel disables output, when the insertion loss value of the enabled channel meets the requirement, the disabled output channel does not have signal output, the switch array group can be judged to work normally, otherwise, the switch array group is judged to work abnormally.
S3, judging whether the power amplification circuit works normally or not: calculating the amplification gain of the power amplification circuit; the transmitting circuit has two paths of output, two power amplifying circuits are provided, only one channel enables output when in operation, the other channel disables output, the output of the channel 1 and the output of the channel 2 are tested respectively, when the amplification gain of the enabled channel meets the requirement, the disabled output channel has no signal output, the power amplifying circuit can be judged to work normally, otherwise, the power amplifying circuit is indicated to work abnormally.
On the other hand, based on the above-mentioned transmitting circuit testing device, the embodiment of the invention also provides a method for testing the transmitting circuit of the resistivity measurement while drilling system (also called as a transmitting circuit testing method). The transmitting circuit testing method is realized by using the transmitting circuit testing device.
FIG. 3 is a schematic diagram of steps of a method for testing a transmit circuit of a resistivity while drilling system in accordance with an embodiment of the present application. As shown in fig. 3, the method for testing a transmitting circuit according to the embodiment of the invention includes the following steps:
step S301: collecting output signals of all test points in a transmitting circuit to be tested;
step S302: processing the output signals of all the test points;
step S303: and judging the working states of different tested units according to the processing results of the output signals of the test points so as to perform fault positioning.
The invention discloses a device and a method for testing a transmitting circuit of a resistivity measurement while drilling system. Compared with indirect testing in the resistivity measurement while drilling system, the transmitting circuit testing device constructed by the embodiment of the invention is used for performing functional testing on the transmitting circuit of the resistivity measurement while drilling system and directly measuring the internal circuit of the transmitting circuit, can quickly and accurately master the working state of the transmitting circuit, and has the advantages of simple and convenient operation and low testing cost.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
It is to be understood that the disclosed embodiments are not limited to the specific structures, process steps, or materials disclosed herein, but are intended to extend to equivalents of these features as would be understood by one of ordinary skill in the relevant arts. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.
Reference in the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Thus, the appearances of the phrase "one embodiment" or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.
While the embodiments of the present invention have been described above, the embodiments are presented for the purpose of facilitating understanding of the invention and are not intended to limit the invention. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is still subject to the scope of the appended claims.
Claims (10)
1. An apparatus for testing a transmit circuit of a resistivity while drilling system, comprising:
the signal acquisition module is used for acquiring output signals of all test points in the transmitting circuit;
the signal processing module is used for processing the output signals of the test points;
and the test terminal is used for judging the working states of different tested units according to the processing results of the output signals of the test points so as to perform fault positioning.
2. The apparatus of claim 1, wherein the test points are respectively disposed at an output of a signal generating circuit, a multiplexing output of a switch block array, and a multiplexing output of a power amplifying circuit within the transmitting circuit.
3. The apparatus of claim 2, wherein the device comprises a plurality of sensors,
the signal processing module is used for extracting the frequency and the amplitude of the output signal of each path of test point;
and the test terminal is used for respectively judging the working states of the signal generating circuit, the switch group array and the power amplifying circuit according to the frequency and the amplitude of the signal output by each path of test point, wherein when the signal is abnormal, the abnormal tested unit and the specific fault position in the unit are positioned.
4. The apparatus of claim 3, wherein the device comprises a plurality of sensors,
the test terminal is used for calculating the insertion loss of the switch group array according to the frequency and the amplitude of the output signal of each path of test point, and judging the working state of the switch group array and carrying out fault positioning by combining the principle that only one path of channel of the switch group array enables output.
5. The apparatus of claim 3 or 4, wherein the device comprises a plurality of sensors,
the test terminal is also used for calculating the amplification gain of the power amplification circuit according to the frequency and the amplitude of the output signal of each path of test point, and judging the working state of the power amplification circuit and carrying out fault positioning by combining the principle that the power amplification circuit only has one path of channel enabling output.
6. The device according to any one of claims 1 to 5, wherein,
the signal acquisition module is also used for carrying out analog-to-digital conversion processing on the acquired output signals of the test points so as to send the output digital signals of the test points to the signal processing module.
7. The apparatus according to any one of claims 1 to 6, further comprising:
the first communication module is arranged between the signal processing module and the test terminal;
and the second communication module is connected with the test terminal and is in communication connection with the communication module in the transmitting circuit.
8. The apparatus of claim 7, wherein the device comprises a plurality of sensors,
the second communication module is further configured to transmit a specified channel transmission enabling instruction sent by the test terminal to the transmitting circuit.
9. The apparatus of claim 7, wherein the device comprises a plurality of sensors,
the test terminal adopts computer equipment, and the first communication module adopts a USB communication module; or alternatively
The test terminal adopts a mobile terminal, and the first communication module adopts a wireless communication module.
10. A method for testing a transmitting circuit of a resistivity measurement while drilling system, characterized in that the method is implemented with an apparatus according to any of the claims 1-9, wherein the method comprises:
collecting output signals of all test points in the transmitting circuit;
processing the output signals of all the test points;
and judging the working states of different tested units according to the processing results of the output signals of the test points so as to perform fault positioning.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211211759.5A CN117856935A (en) | 2022-09-30 | 2022-09-30 | Device and method for testing transmitting circuit of resistivity measurement while drilling system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211211759.5A CN117856935A (en) | 2022-09-30 | 2022-09-30 | Device and method for testing transmitting circuit of resistivity measurement while drilling system |
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| CN117856935A true CN117856935A (en) | 2024-04-09 |
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| CN202211211759.5A Pending CN117856935A (en) | 2022-09-30 | 2022-09-30 | Device and method for testing transmitting circuit of resistivity measurement while drilling system |
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| CN (1) | CN117856935A (en) |
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