CN218917557U - A Circuit Fault Detection System Used in Measurement While Drilling System - Google Patents

Abstract

The utility model discloses a circuit fault detection system for a measurement system while drilling. The system comprises: a detection environment device, which is used to provide a variety of test environments for the circuit to be detected; a signal acquisition device, which is used for corresponding test Under the environment, the operating characteristic signal of each sub-circuit in the circuit to be tested is collected; the test device is used to determine the faulty sub-circuit under the corresponding test environment according to the operating characteristic signal. The utility model realizes the performance test of the measuring-while-drilling circuit during the product manufacturing process and the fault detection of the measuring-while-drilling circuit after the product is put into use for different test environments.

Description

A Circuit Fault Detection System Used in Measurement While Drilling System

technical field

The utility model belongs to the technical field of measurement-while-drilling, in particular to a circuit fault detection system for a measurement-while-drilling system.

Background technique

The measurement-while-drilling system is composed of a mechanical system and a circuit system. When testing the overall function of the circuit system, it is necessary to combine the entire circuit system with the drill collar to produce a complete measurement-while-drilling circuit system. Circuit system testing. However, the circuit system can only be installed on the drill collar through a complicated process, and if the circuit system fails to pass the test, time and material will be wasted.

Utility model content

In order to solve the above problems, the embodiment of the utility model provides a circuit fault detection system for the measurement-while-drilling system, including: a detection environment device, which is used to provide a variety of test environments for the circuit to be detected; a signal acquisition device, which It is used to collect the operation characteristic signal of each sub-circuit in the circuit to be tested under the corresponding test environment; the test device is used to determine the faulty sub-circuit under the corresponding test environment according to the operation characteristic signal.

Preferably, the sub-circuits of the circuit to be detected include: a transmitting circuit, a receiving circuit, a main control circuit, an azimuth gamma circuit, a gamma sensor and a power supply unit circuit.

Preferably, the circuit fault detection system further includes: a stabilized power supply, connected to the power supply unit circuit, for providing stable power to each sub-circuit through the power supply unit circuit.

Preferably, the detection environment device includes: a high temperature test unit, which is used to provide a high temperature aging test environment for the circuit to be tested; and a rotation test unit, which is used to provide a rotation test environment for the circuit to be tested.

Preferably, the circuit fault detection system further includes: a multi-core slip ring, the multi-core slip ring is perpendicular to the extension direction of the information transmission cable and the power supply cable, wherein the information transmission cable is used to Each sub-circuit is connected to the signal acquisition device, and the power supply cable is used to connect the power supply unit circuit to the regulated power supply.

Preferably, the operating characteristic signal includes a signal representing the working state of each sub-circuit, wherein the working state characteristic signal of the power supply unit circuit is the voltage actually provided by the power supply unit circuit to other sub-circuits, and the working state of the remaining sub-circuits The state characteristic signal is the output signal of the corresponding sub-circuit.

Preferably, the signal acquisition device further includes: a first array switch, the input end of which is connected to the actual power line end output from the power supply unit circuit to the remaining sub-circuits; a second array switch, whose input end is connected to the end of the remaining sub-circuit The output signals of the remaining sub-circuits are connected.

Preferably, the test environment includes a conventional test environment, a high temperature test environment, a rotation test environment and a high temperature rotation composite test environment.

Preferably, the cooperation relationship between the high temperature test unit and the rotation test unit is realized in the following manner: in the normal test environment, the high temperature test unit and the rotation test unit remain in a standby state; In the test environment, only the high temperature test unit starts; in the rotation test environment, only the rotation test unit starts; in the high temperature rotation compound test environment, the high temperature test unit and the rotation test unit simultaneously start up.

Compared with the prior art, one or more embodiments in the above solutions may have the following advantages or beneficial effects:

The utility model proposes a circuit fault detection system for a measurement-while-drilling system. The circuit fault detection system has different test environments, and can perform fault tests on circuits to be detected for each test environment. In addition, the circuit fault detection system splits the entire circuit system of the measurement-while-drilling system into several sub-circuits, and tests each sub-circuit separately, so that the fault location in the entire circuit system can be directly locked. The utility model does not need to connect the circuit to be detected with the drill collar during detection, and can detect the fault of the circuit to be detected after the product is put into use, thereby realizing fast and accurate positioning of the fault, and realizing detection while drilling Measure the performance of the circuit in different test environments.

Other features and advantages of the present invention will be set forth in the following description, and, in part, will be apparent from the description, or can be learned by practicing the present invention. The objectives and other advantages of the utility model can be realized and obtained by the structures particularly pointed out in the specification, claims and accompanying drawings.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation to the utility model. In the attached picture:

FIG. 1 is a schematic diagram of the overall structure of a circuit fault detection system for a measurement-while-drilling system according to an embodiment of the present application.

Fig. 2 is a schematic circuit connection diagram of a circuit fault detection system for a measurement-while-drilling system according to an embodiment of the present application.

Fig. 3 is an application flowchart of the circuit fault detection system for the measurement-while-drilling system according to the embodiment of the present application.

Detailed ways

The implementation of the utility model will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the implementation process of how to apply technical means to solve technical problems and achieve technical effects in the utility model. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the utility model can be combined with each other, and the formed technical solutions are all within the protection scope of the utility model.

In addition, the steps shown in the flow diagrams of the figures may be performed in a computer system, such as a set of computer-executable instructions, and, although a logical order is shown in the flow diagrams, in some cases, the sequence may be different. The steps shown or described are performed in the order herein.

The measurement-while-drilling system is composed of a mechanical system and a circuit system. When testing the overall function of the circuit system, it is necessary to combine the entire circuit system with the drill collar to produce a complete measurement-while-drilling circuit system. Circuit system testing. However, the circuit system can only be installed on the drill collar through a complicated process, and if the circuit system fails to pass the test, time and material will be wasted.

Therefore, in order to solve the above problems, the utility model proposes a circuit fault detection system for the measurement-while-drilling system. The circuit fault detection system has different test environments, and performs fault tests on the circuit to be detected for each test environment. In addition, the circuit fault detection system splits the entire circuit system of the measurement-while-drilling system into several sub-circuits, and tests each sub-circuit separately, so that the fault location in the entire circuit system can be directly locked. The utility model does not need to connect the circuit to be detected with the drill collar during detection, and can detect the fault of the circuit to be detected after the product is put into use, thereby realizing fast and accurate positioning of the fault, and realizing detection while drilling Measure the performance of the circuit in different test environments. In addition, the utility model also has the advantages of simple operation and low testing cost.

FIG. 1 is a schematic diagram of the overall structure of a circuit fault detection system for a measurement-while-drilling system according to an embodiment of the present application. The circuit fault detection system for the measurement-while-drilling system described in the present utility model will be described in detail below in conjunction with FIG. 1 .

As shown in FIG. 1 , the circuit fault detection system for the measurement-while-drilling system at least includes: a detection environment device 10 , a signal collection device 20 and a test device (not shown). The testing environment device 10 provides multiple testing environments for the circuit to be tested. The signal collection device 20 collects the operation characteristic signal of each sub-circuit in the circuit to be tested under the corresponding test environment. The test device determines the faulty sub-circuit in the corresponding test environment according to the operating characteristic signal collected by the signal collection device 20 .

The structure and functions of the circuit fault detection system for the measurement-while-drilling system according to the embodiments of the present application will be described in detail below.

The testing environment device 10 provides multiple different testing environments for the circuit to be tested. The test environment set in this embodiment is mainly used in the product manufacturing process to carry out high-temperature aging tests on the circuits to be detected, so that the circuits to be detected can be subjected to aging tests at different temperatures; The azimuth gamma test under.

In the embodiment of the present application, the sub-circuits of the circuit to be detected include: a transmitting circuit, a receiving circuit, a main control circuit, an azimuth gamma circuit, a gamma sensor and a power supply unit circuit. Fig. 2 is a schematic circuit connection diagram of a circuit fault detection system for a measurement-while-drilling system according to an embodiment of the present application. Referring to Fig. 2, the measurement-while-drilling circuit system is formed by connecting multiple sub-circuits, wherein, the transmitting circuit, the receiving circuit, the main control circuit, the azimuth gamma circuit, the gamma sensor, and the power supply unit circuit are the various sub-circuits forming the circuit to be detected. circuit. In the embodiment of the present application, the transmitting circuit, the main control circuit and the receiving circuit are connected in sequence, the azimuth gamma circuit is connected to the main control circuit and the gamma sensor respectively, and the power unit circuit is connected to the transmitting circuit, the receiving circuit and the main control circuit respectively. , Azimuth gamma circuit and gamma sensor connection.

In the circuit to be detected in this embodiment, the transmitting circuit is used to output the signal; the receiving circuit is used to receive the output signal of the transmitting signal; The output signal of the horse circuit is processed; the gamma sensor is used to measure the radioactive isotope nuclide and output the gamma signal; the azimuth gamma circuit is used to receive the gamma signal and perform data processing; the power supply unit circuit is used to supply the transmitting circuit, The receiving circuit, main control circuit, azimuth gamma circuit and gamma sensor provide power.

The circuit fault detection system described in the utility model has a stabilized power supply connected to the power unit circuit, and the stabilized power supply is used to provide stable power to each sub-circuit through the power unit circuit. Referring to Fig. 2, the regulated power supply is directly connected to the power supply unit circuit, and provides a stable working voltage of 36V for the power supply unit circuit. The power supply unit circuit converts the 36V operating voltage provided by the regulated power supply into the applicable operating voltage of each sub-circuit (transmitting circuit, receiving circuit, main control circuit, azimuth gamma circuit and gamma sensor), and operates according to the applicable The voltage supplies power to the corresponding sub-circuits.

Further, the signal collection device 20 is used to collect the operation characteristic signal of each sub-circuit in the circuit to be tested under the corresponding test environment. The various test environments in this embodiment include a conventional test environment, a high temperature test environment, a rotation test environment and a high temperature rotation composite test environment. For each test environment, the signal acquisition device 20 separately collects the operating characteristic signal of each sub-circuit in the circuit to be tested, so as to obtain the working status of the corresponding sub-circuit in the corresponding test environment.

Next, the operating characteristic signal includes a signal representing the working state of each sub-circuit. Wherein, the working state characteristic signal of the power supply unit circuit is the voltage actually provided by the power supply unit circuit to other sub-circuits, and the working state characteristic signal of the remaining sub-circuits is the output signal of the corresponding sub-circuit.

Specifically, the operating characteristic signal of each sub-circuit in the corresponding test environment collected by the signal acquisition device 20 includes a signal representing the working state of each sub-circuit. In this embodiment, according to the operating characteristic signal, it is determined that the corresponding sub-circuit is in a normal operating state or in a faulty state in a corresponding test environment. The signal acquisition device 20 extracts signals representing the working status of each sub-circuit during the operation of the circuit to be detected. In the embodiment of the present application, the working state characteristic signals of the transmitting circuit, the receiving circuit, the main control circuit, the azimuth gamma circuit and the gamma sensor are the output signals of the corresponding sub-circuits during operation, and the working state characteristic signals of the power supply unit circuit Different voltages that are actually supplied to other sub-circuits by the power supply unit circuit.

Further, the signal acquisition device 20 also includes a first array switch and a second array switch. Wherein, the input end of the first array switch is connected to the actual power line end output from the power unit circuit to the remaining sub-circuits, and the input end of the second array switch is connected to each output signal of the remaining sub-circuits.

In the embodiment of the present application, the input end of the first array switch is connected to the actual power line end output from the power supply unit circuit to the remaining sub-circuits, and the output end is connected to a voltage monitoring device (such as an oscilloscope). The first array switch switches the transmission path between the actual power supply line output from the power supply unit circuit to the remaining sub-circuits and the input terminal of the voltage monitoring device. In this way, not only can the waveform of the voltage provided by the power supply unit circuit to the transmitting circuit, receiving circuit, main control circuit, azimuth gamma circuit and gamma sensor be independently monitored, but also the power supply status of the power supply unit circuit to the corresponding sub-circuit can be independently obtained .

Next, the input end of the second array switch is connected to the output signals of the remaining sub-circuits, and the output end is connected to the operating characteristic signal monitoring device (for example, a computer). Wherein, the signal input terminal of the computer adopts the USB to 485 interface. The second array switch can independently determine the transmission path by switching the signal transmission path between the output signals of the transmission circuit, the reception circuit, the main control circuit, the azimuth gamma circuit and the gamma sensor and the input terminal of the operating characteristic signal monitoring device. The working status of the circuit, the receiving circuit, the main control circuit, the azimuth gamma circuit and the gamma sensor can also display the output signals of the corresponding sub-circuits, which is convenient for intuitive monitoring.

The detection environment device 10 has a high temperature test unit, which is used to provide a high temperature aging test environment for the circuit to be tested; and a rotation test unit, which is used to provide a rotation test environment for the circuit to be tested. Referring to FIG. 1 , the circuit fault detection system described in the present invention has a device bracket, and a circuit fixing frame is arranged above the device bracket. The high temperature test unit adopts a temperature control box, which is arranged between the device bracket and the circuit fixing frame. The rotating test unit adopts a motor, wherein one side of the circuit fixing frame is connected to the motor, and the other side is connected to the signal acquisition device 20 . Before the test begins, fix the circuit to be tested on the circuit holder. Then, the regulated power supply switch is turned on, and the regulated power supply provides a 36V system operating voltage for the power supply unit circuit. Then, the power unit circuit provides corresponding working voltages to the remaining sub-circuits. This embodiment provides a high-temperature aging test environment for the circuit to be detected by adjusting the temperature control box, thereby performing aging tests at different temperatures on the circuit to be detected; by adjusting the rotation of the motor, a rotating test environment is provided for the circuit to be detected, so that the circuit to be detected Azimuth gamma test at different speeds.

Further, the test device determines the faulty sub-circuit under the corresponding test environment according to the operating characteristic signal. In the embodiment of the present application, the test device determines the faulty sub-circuit according to the operating characteristic signal of each sub-circuit collected by the signal collection device 20, thereby locking the fault location of the circuit to be tested.

The circuit to be tested in the embodiment of the utility model can be checked under different test environments. Wherein, the test environment includes a conventional test environment, a high temperature test environment, a rotating test environment and a high temperature rotating compound test environment.

The coordination relationship between the high temperature test unit and the rotation test unit is realized in the following way:

The conventional test environment of this embodiment is used to simulate the normal temperature working environment of the circuit to be tested. In the normal temperature test environment, the high temperature test unit and the rotation test unit are kept in a standby state. That is, in the normal test environment, the high-temperature test unit and the rotating test unit remain on standby.

The high-temperature test environment is used to simulate the high-temperature working environment of the circuit to be tested, and the high-temperature test unit is started at this time. Specifically, in the high temperature test environment, only the high temperature test unit is activated.

The rotating test environment is used to simulate the rotating working environment of the circuit to be tested, and only the rotating test unit is started at this time. Specifically, in a spin-test environment, only the spin-test unit starts.

The high-temperature rotating composite test environment is used to simulate the environment state where the circuit to be tested has high temperature and rotation at the same time when it is working. At this time, the high-temperature test unit and the rotation test unit are started at the same time. Specifically, in the high-temperature rotating composite testing environment, the high-temperature testing unit and the rotating testing unit are started simultaneously.

Fig. 3 is an application flowchart of the circuit fault detection system for the measurement-while-drilling system according to the embodiment of the present application. Referring to Fig. 3, the detection process of the circuit to be detected in this embodiment is as follows:

In a normal test environment, keep the motor and temperature control box in standby. During the detection process, if no circuit fault is detected (that is, the circuit is normal), the circuit will continue to be detected in the high temperature test environment; if one or more sub-circuit faults are detected, the current detection process will be terminated. After the fault is eliminated, restart the circuit detection process in the normal test environment, and continue to test the circuit in the high temperature test environment until no fault is detected in the normal test environment.

In a high temperature test environment, only the temperature control box is activated. During the detection process, if no circuit fault is detected (that is, the circuit is normal), the circuit will continue to be detected in the rotating test environment; if one or more sub-circuit faults are detected, the current detection process will be terminated. After the fault is eliminated, restart the circuit detection process in the high temperature test environment, and continue to detect the circuit in the rotation test environment until no fault is detected in the high temperature test environment.

In a spinning test environment, only the motor is started. During the detection process, if no circuit fault is detected (that is, the circuit is normal), the circuit will continue to be tested in the high-temperature rotating compound test environment; if one or more sub-circuit faults are detected, the current detection process will be terminated. After the fault is eliminated, start the circuit detection process in the rotating test environment again, and continue to detect the circuit in the high-temperature rotating compound test environment until no fault is detected in the rotating test environment.

In the high-temperature rotating compound test environment, start the motor and the temperature control box at the same time. During the detection process, if no circuit fault is detected (that is, the circuit is normal), the detection will end; if one or more sub-circuit faults are detected, the current detection process will be terminated. After the fault is eliminated, restart the circuit detection process in the high-temperature rotating compound test environment until no fault is detected in the high-temperature rotating compound test environment, and the test ends.

Further, the circuit fault detection system described in the utility model also has a multi-core slip ring, which is perpendicular to the extension direction of the information transmission cable and the power supply cable, wherein the information transmission cable is used to connect each sub-circuit with the signal acquisition The device 20 is connected, and the power supply cable is used to connect the power supply unit circuit with the regulated power supply. Specifically, the information transmission cable includes a transmitting circuit power signal transmission cable connecting the transmitting circuit and the signal acquisition device 20, a transmitting circuit data signal transmission cable; cable, main control circuit data signal transmission cable; connecting the receiving circuit and the receiving circuit power signal transmission cable of the signal acquisition device 20, the receiving circuit data signal transmission cable; connecting the gamma circuit and the gamma circuit power supply of the signal acquisition device 20 Signal transmission cable, gamma circuit data signal transmission cable; sensor power signal transmission cable and sensor data signal transmission cable connecting the gamma sensor and the signal acquisition device 20 . The power supply unit circuit is connected to the regulated power supply through a power supply cable (the system power cable in Figure 1). The multi-core slip ring is arranged between each sub-circuit and the signal acquisition device 20, and is perpendicular to the extension direction of the information transmission cable and the power supply cable, effectively preventing the cable from being twisted in the rotating test environment or high-temperature rotating compound test environment. broken.

In a specific embodiment of the present application, if the circuit to be detected is installed in the measurement-while-drilling system and has been put into use, the signal acquisition device 20 and the test device can be directly used to collect the current operating characteristic signal of the circuit to be detected, and then realize the detection The location of the current fault of the circuit to be detected.

The embodiment of the utility model proposes a circuit fault detection system for the measurement-while-drilling system. The circuit fault detection system has different test environments, and performs fault tests on the circuit to be detected for each test environment, and in the same test environment When no faulty sub-circuit is detected in the test environment, continue to detect the circuit to be detected in other test environments. In addition, the circuit fault detection system splits the entire circuit system of the measurement-while-drilling system into several sub-circuits, and tests each sub-circuit separately, so that the fault location in the entire circuit system can be directly locked. The utility model does not need to connect the circuit to be detected with the drill collar during detection, and can detect the fault of the circuit to be detected after the product is put into use. The performance test of the measurement-while-drilling circuit in different test environments improves the production success rate of the circuit system of the measurement-while-drilling system.

The above is only a preferred specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any person familiar with the technology can easily think of it within the technical scope disclosed in the utility model Changes or replacements should fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

It should be understood that the disclosed embodiments of the present invention are not limited to the specific structures, processing steps or materials disclosed herein, but should extend to equivalent replacements of these features understood by those of ordinary skill in the related art. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not meant 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 present invention. Thus, appearances of the phrases "one embodiment" or "an embodiment" in various places throughout this specification do not necessarily all refer to the same embodiment.

Although the embodiments disclosed in the present utility model are as above, the content described is only an embodiment adopted for the convenience of understanding the present utility model, and is not intended to limit the present utility model. Anyone skilled in the technical field to which the utility model belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the utility model, but the patent of the utility model The scope of protection must still be based on the scope defined in the appended claims.

Claims (9)

1. A circuit fault detection system for a measurement while drilling system, comprising:

the detection environment device is used for providing various test environments for the circuit to be detected;

the signal acquisition device is used for acquiring the operation characteristic signals of each sub-circuit in the circuit to be detected under the corresponding test environment;

and the testing device is used for determining a fault sub-circuit in the corresponding testing environment according to the operation characteristic signals.

2. The circuit fault detection system of claim 1, wherein the sub-circuit of the circuit to be detected comprises: the device comprises a transmitting circuit, a receiving circuit, a main control circuit, an azimuth gamma circuit, a gamma sensor and a power supply unit circuit.

3. The circuit fault detection system of claim 2, wherein the circuit fault detection system further comprises:

and the stabilized power supply is connected with the power supply unit circuit and is used for providing stabilized power supply for each sub-circuit through the power supply unit circuit.

4. The circuit fault detection system according to any one of claims 1 to 3, wherein the detection environment device includes:

the high-temperature testing unit is used for providing a high-temperature aging testing environment for the circuit to be detected;

and the rotation test unit is used for providing a rotation test environment for the circuit to be detected.

5. The circuit fault detection system of claim 3, further comprising: the multi-core slip ring is perpendicular to the extending direction of the information transmission cable and the power supply cable, the information transmission cable is used for connecting each sub-circuit with the signal acquisition device, and the power supply cable is used for connecting the power supply unit circuit with the stabilized voltage supply.

6. The circuit fault detection system of claim 2, 3 or 5, wherein the operating characteristic signal comprises a signal indicative of an operating state of each sub-circuit, wherein the operating state characteristic signal of the power supply unit circuit is a voltage actually provided by the power supply unit circuit to the other sub-circuits, and the operating state characteristic signal of the remaining sub-circuits is an output signal of the corresponding sub-circuit.

7. The circuit fault detection system of claim 6, wherein the signal acquisition device further comprises:

the input end of the first array switch is connected with the actual power line end output by the power supply unit circuit to the residual sub-circuit;

and the input end of the second array switch is connected with each output signal of the residual sub-circuit.

8. The circuit fault detection system of claim 4, wherein the test environment comprises a conventional test environment, a high temperature test environment, a rotational test environment, and a high temperature rotational composite test environment.

9. The circuit fault detection system of claim 8, wherein the mating relationship of the high temperature test unit and the rotary test unit is implemented as follows:

in the conventional test environment, the high-temperature test unit and the rotary test unit are kept in a standby state;

in the high-temperature test environment, only the high-temperature test unit is started;

in the rotational test environment, only the rotational test unit is activated;

in the high-temperature rotary composite testing environment, the high-temperature testing unit and the rotary testing unit are started simultaneously.

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