CN212514996U - T/R module capable of realizing self diagnosis - Google Patents
T/R module capable of realizing self diagnosis Download PDFInfo
- Publication number
- CN212514996U CN212514996U CN202020729666.1U CN202020729666U CN212514996U CN 212514996 U CN212514996 U CN 212514996U CN 202020729666 U CN202020729666 U CN 202020729666U CN 212514996 U CN212514996 U CN 212514996U
- Authority
- CN
- China
- Prior art keywords
- resistor
- over switch
- change
- operational amplifier
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The utility model discloses a T/R module capable of realizing self diagnosis, which is additionally provided with a change-over switch 1, a high-power attenuator, a change-over switch 2, a change-over switch 3 and a receiving detection circuit; the change-over switch 1 is arranged between the transmitting channel and the circulator, the change-over switch 1 is connected with a high-power attenuator, and the high-power attenuator is connected with a change-over switch 2 arranged between the circulator and the receiving channel; the change-over switch 3 is arranged between the receiving channel and the transceiving switch and is connected with the receiving detection circuit. Through the utility model discloses the structural design of T/R module can let radar system carry out real-time diagnosis to transmission channel and receiving channel when the working gap or needs, carries out accurate location to the module trouble. The scheme greatly increases the reliability of the radar system, can master the state of the T/R module in real time, shortens the troubleshooting time and reduces the troubleshooting workload.
Description
Technical Field
The utility model belongs to radar equipment field especially relates to a can realize self-diagnostic T/R module.
Background
The conventional T/R module generally has no self-checking function, and cannot perform real-time fault diagnosis on a receiving channel and a transmitting channel of the T/R module, and a schematic diagram of the conventional T/R module is shown in fig. 1.
As dozens or hundreds of T/R modules are used in the radar system at the same time, if a small part of the T/R modules have faults, the faults are not easy to be perceived, but the overall performance of the radar system is influenced. When a user needs to check faults, all T/R modules in the radar system need to be checked one by one, the check period is long, and the workload is very large.
Therefore, a need exists for a T/R module that is capable of self-diagnosis.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: in order to overcome the prior art problem, a T/R module that can realize self-diagnosis is provided, structure setting through this T/R module makes the utility model discloses the module can let radar system carry out fault detection to the module automatic when working gap or needs to shortened the time of troubleshooting, reduced the work load of troubleshooting.
The purpose of the utility model is realized through the following technical scheme:
a T/R module capable of realizing self diagnosis comprises an attenuator, a phase shifter, a transceiving change-over switch, a transmitting channel, a receiving channel and a circulator, wherein the attenuator is connected with the transceiving change-over switch through the phase shifter, the transmitting end of the transceiving change-over switch is connected with the transmitting channel, the transmitting channel is connected with the circulator, the circulator is connected with the receiving channel, the receiving channel is connected with the receiving end of the transceiving change-over switch, the circulator is connected with an antenna, the attenuator is connected with a radio frequency interface, and the T/R module further comprises a change-over switch 1, a high-power attenuator, a change-over switch 2, a change-over switch 3 and a receiving detection circuit; the change-over switch 1 is arranged between the transmitting channel and the circulator, the change-over switch 1 is connected with a high-power attenuator, and the high-power attenuator is connected with a change-over switch 2 arranged between the circulator and the receiving channel; the change-over switch 3 is arranged between the receiving channel and the transceiving switch and is connected with the receiving detection circuit.
According to a preferred embodiment, the reception detection circuit comprises at least: the attenuator ATT, the detector D1, the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C6, the resistor R1, the resistor R2, the resistor R14, the resistor R15, the resistor R16, the resistor R17, the operational amplifier U1 and the operational amplifier U5; the receiving detection circuit is connected with an attenuator ATT through an RF2_ IN port, the attenuator ATT is connected with a detector D1, and the detector D1 is connected with an operational amplifier U1 through a coupling capacitor C2; the reverse end of the operational amplifier U5 is connected with a direct-current voltage VCC, the output end of the operational amplifier U1 enters the homodromous end of the operational amplifier U5 through a current-limiting resistor R14, and after the operational amplifier U5 finishes voltage comparison of the homodromous end and the reverse end, a comparison result is output and is output to a transmitting and receiving channel fault indication port Test through a current-limiting resistor R17.
According to a preferred embodiment, a filter circuit is arranged between the detector D1 and the capacitor C2.
According to a preferred embodiment, the filter circuit comprises a resistor R1 and a capacitor C1, wherein the resistor R1 and the capacitor C1 are arranged in parallel, one end of the resistor R1 is grounded, and the other end of the resistor R3526 is connected to a line between the detector D1 and the capacitor C2.
According to a preferred embodiment, a voltage divider is further disposed between the inverting terminal of the operational amplifier U5 and the dc voltage source VCC.
According to a preferred embodiment, the voltage divider comprises a resistor R15 and a resistor R16, one end of the resistor R15 is connected to a dc voltage source VCC, the other end is connected to the inverting terminal of the operational amplifier U5 and the resistor R16, and the other end of the resistor R16 is grounded.
The main scheme and the further selection schemes of the utility model can be freely combined to form a plurality of schemes, which are the schemes that can be adopted and claimed by the utility model; and the utility model discloses also can the independent assortment between (each non-conflict selection) selection and between other choices. The technical solutions to be protected by the present invention, which are various combinations that can be known to those skilled in the art based on the prior art and the common general knowledge after understanding the present invention, are not exhaustive herein.
The utility model has the advantages that: through the utility model discloses the structural design of TR module can let radar system carry out real-time diagnosis to transmission channel and receiving channel when the working gap or needs, carries out accurate location to trouble module. The scheme greatly increases the reliability of the radar system, can master the state of the T/R module in real time, shortens the troubleshooting time and reduces the troubleshooting workload.
Drawings
FIG. 1 is a schematic diagram of a T/R module used in the prior art;
FIG. 2 is a schematic structural diagram of a T/R module of the present invention;
fig. 3 is a circuit configuration diagram of a reception detection circuit in the T/R block.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that, in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Additionally, the utility model discloses it is pointed out that, in the utility model, if do not write out structure, connection relation, positional relationship, power source relation etc. that concretely relates to very much, then the utility model relates to a structure, connection relation, positional relationship, power source relation etc. are technical personnel in the field on prior art's basis, can not learn through creative work.
Example 1:
referring to fig. 2, a T/R module capable of implementing self-diagnosis is shown in the drawing, where the T/R module includes an attenuator, a phase shifter, a transceiving switch, a transmitting channel, a receiving channel, and a circulator, the attenuator is connected to the transceiving switch through the phase shifter, the transmitting end of the transceiving switch is connected to the transmitting channel, the transmitting channel is connected to the circulator, the circulator is connected to the receiving channel, the receiving channel is connected to the receiving end of the transceiving switch, the circulator is connected to an antenna, and the attenuator is connected to a radio frequency interface.
Preferably, the T/R module further comprises a change-over switch 1, a high-power attenuator, a change-over switch 2, a change-over switch 3 and a reception detection circuit.
Preferably, the change-over switch 1 is arranged between the transmitting channel and the circulator, and the change-over switch 1 is connected with a high-power attenuator which is connected with a change-over switch 2 arranged between the circulator and the receiving channel. The change-over switch 3 is arranged between the receiving channel and the transceiving change-over switch and is connected with the receiving detection circuit.
Preferably, the working principle of the T/R module is as follows:
when the T/R module performs self-checking of a receiving channel and a transmitting channel, only a test signal is input from a radio frequency interface, the signal reaches the change-over switch 1 through the attenuator 1, the phase shifter, the receiving-transmitting change-over switch and the transmitting channel, the change-over switch 1 switches the test signal to the high-power attenuator to attenuate the test signal, so that the power of the test signal is attenuated to a range which can be borne by the receiving channel, the attenuated test signal is switched to the receiving channel through the change-over switch 2 and then is sent to the receiving detection circuit through the change-over switch 3 to detect the test signal.
The receiving detection circuit detects the power of the test signal to judge whether the receiving channel and the transmitting channel are in fault, the transmitting channel and the receiving channel of the T/R module can be judged to work normally if the power of the test signal is in a normal range, and the transmitting channel or the receiving channel of the T/R module can be judged to be in fault if the power of the test signal is lower than the normal range.
The technical scheme completes the fault diagnosis of the transmitting channel and the receiving channel of the T/R module at one time, has very short time consumption, and can be completely completed in the radar working gap, so that a user can find the fault module in time to judge the performance of the whole radar system. Therefore, the situation that whether the T/R modules are in the normal state or not needs to be manually checked one by one in the traditional technology is avoided. The troubleshooting efficiency is greatly improved, and the manpower resource is saved.
Example 2
As shown in fig. 3, on the basis of embodiment 1, the utility model also discloses a receiving detection circuit. The detection circuit can detect the radio frequency signal power of the T/R module receiving channel and compare the radio frequency signal power with reference voltage to judge whether the T/R module transmitting and receiving channel works normally or not.
Preferably, the reception detection circuit includes at least: the attenuator ATT, the detector D1, the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C6, the resistor R1, the resistor R2, the resistor R14, the resistor R15, the resistor R16, the resistor R17, the operational amplifier U1 and the operational amplifier U5.
Preferably, the receiving detection circuit is connected with an attenuator ATT through an RF2_ IN port, the attenuator ATT is connected with a detector D1, and the detector D1 is connected with an operational amplifier U1 through a coupling capacitor C2.
Preferably, a filter circuit is arranged between the detector D1 and the capacitor C2.
Further, the filter circuit comprises a resistor R1 and a capacitor C1, wherein the resistor R1 and the capacitor C1 are arranged in parallel, one end of the resistor R1 is grounded, and the other end of the resistor R1 is connected to a line between the detector D1 and the capacitor C2.
Preferably, the inverting terminal of the operational amplifier U5 is connected to a dc voltage VCC, the output terminal of the operational amplifier U1 enters the inverting terminal of the operational amplifier U5 through a current limiting resistor R14, and the operational amplifier U5 outputs a comparison result after comparing the voltages of the inverting terminal and the inverting terminal, and outputs the comparison result to the transmit-receive channel fault indication port Test through a current limiting resistor R17.
Preferably, a voltage dividing device is further disposed between the inverting terminal of the operational amplifier U5 and the dc voltage source VCC.
Further, the voltage divider includes a resistor R15 and a resistor R16, one end of the resistor R15 is connected to the dc voltage source VCC, the other end is connected to the inverting terminal of the operational amplifier U5 and the resistor R16, and the other end of the resistor R16 is grounded.
The specific working principle is as follows:
the received radio frequency signal is attenuated by the attenuation ATT through the RF2_ IN port, and reaches the range which can be detected by the detector D1. The radio frequency signal is converted into a voltage signal by the detector D1, and the voltage signal is filtered by the capacitor C1 and the resistor R2 and then enters the operational amplifier U1 through the coupling capacitor C2. The operational amplifier constitutes an emitter follower circuit to improve the driving capability and the isolation between the front stage and the rear stage.
When the T/R module carries out direct fault detection on a receiving and transmitting channel, a direct-current voltage source VCC carries out voltage division through resistors R15 and R16 and enters the reverse end of an operational amplifier U5 to serve as reference voltage, when the voltage is in normal work of the T/R module, radio-frequency signals enter a receiving channel after passing through a transmitting channel and being attenuated, and then the power of the receiving channel detects the voltage. The power detection voltage of the radio frequency signal of the receiving channel output by the U1 enters the voltage of the same-direction end and the reverse-direction end of the operational amplifier U5 through the current limiting resistor R14 to be compared, and then the comparison result is output from the output end of the U3 and is output to the fault indication port Test of the receiving channel through the current limiting resistor R17.
The aforesaid the utility model discloses basic embodiment and each further alternative can the independent assortment in order to form a plurality of embodiments, is the utility model discloses can adopt and claim the embodiment of protection. In the scheme of the utility model, each selection example can be combined with any other basic examples and selection examples at will.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A T/R module capable of realizing self diagnosis comprises an attenuator, a phase shifter, a transceiving change-over switch, a transmitting channel, a receiving channel and a circulator, wherein the attenuator is connected with the transceiving change-over switch through the phase shifter, the transmitting end of the transceiving change-over switch is connected with the transmitting channel, the transmitting channel is connected with the circulator, the circulator is connected with the receiving channel, the receiving channel is connected with the receiving end of the transceiving change-over switch, the circulator is connected with an antenna, the attenuator is connected with a radio frequency interface,
the method is characterized in that: the T/R module also comprises a change-over switch 1, a high-power attenuator, a change-over switch 2, a change-over switch 3 and a receiving detection circuit;
the change-over switch 1 is arranged between the transmitting channel and the circulator, the change-over switch 1 is connected with a high-power attenuator, and the high-power attenuator is connected with a change-over switch 2 arranged between the circulator and the receiving channel;
the change-over switch 3 is arranged between the receiving channel and the transceiving change-over switch and is connected with the receiving detection circuit.
2. A T/R module capable of self-diagnosis according to claim 1, wherein said reception detection circuit comprises at least: the attenuator ATT, the detector D1, the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C6, the resistor R1, the resistor R2, the resistor R14, the resistor R15, the resistor R16, the resistor R17, the operational amplifier U1 and the operational amplifier U5;
the receiving detection circuit is connected with an attenuator ATT through an RF2_ IN port, the attenuator ATT is connected with a detector D1, and the detector D1 is connected with an operational amplifier U1 through a coupling capacitor C2;
the reverse end of the operational amplifier U5 is connected with a direct current voltage VCC, the output end of the operational amplifier U1 enters the same-direction end of the operational amplifier U5 through a current limiting resistor R14,
after the operational amplifier U5 finishes the voltage comparison between the equidirectional end and the reverse end, the comparison result is output and is output to the transmitting and receiving channel fault indication port Test through the current limiting resistor R17.
3. The self-diagnostic T/R module as set forth in claim 2, wherein a filter circuit is provided between the detector D1 and the capacitor C2.
4. A T/R module capable of realizing self-diagnosis according to claim 3, wherein the filter circuit comprises a resistor R1 and a capacitor C1, the resistor R1 and the capacitor C1 are arranged in parallel, one end of the resistor R1 is connected to the ground, and the other end of the resistor R1 is connected to a line between the detector D1 and the capacitor C2.
5. The T/R module capable of self-diagnosis according to claim 2, wherein a voltage divider is further provided between the inverting terminal of the operational amplifier U5 and the DC voltage source VCC.
6. The T/R module capable of self-diagnosis according to claim 5, wherein the voltage divider comprises a resistor R15 and a resistor R16, one end of the resistor R15 is connected to a DC voltage source VCC, the other end is connected to the inverting terminal of an operational amplifier U5 and the resistor R16, respectively, and the other end of the resistor R16 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020729666.1U CN212514996U (en) | 2020-05-07 | 2020-05-07 | T/R module capable of realizing self diagnosis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020729666.1U CN212514996U (en) | 2020-05-07 | 2020-05-07 | T/R module capable of realizing self diagnosis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212514996U true CN212514996U (en) | 2021-02-09 |
Family
ID=74445264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020729666.1U Active CN212514996U (en) | 2020-05-07 | 2020-05-07 | T/R module capable of realizing self diagnosis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212514996U (en) |
-
2020
- 2020-05-07 CN CN202020729666.1U patent/CN212514996U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101119119B (en) | Method and apparatus for detecting open circuit fault of transmitter | |
| CN107255782B (en) | A kind of high-voltage interlocking detection circuit and interlocking signal detection method | |
| CN201829385U (en) | Press switch with diagnosis function and press key switch device | |
| US11733310B2 (en) | Insulation resistance detection device and forklift truck | |
| CN110542487A (en) | Temperature detection circuit and method | |
| CN218473155U (en) | Current detection circuit and fault diagnosis device for HPLC communication unit | |
| CN212514996U (en) | T/R module capable of realizing self diagnosis | |
| CN112051463B (en) | Plug detection circuit of vehicle-mounted diagnosis system and vehicle management system | |
| CN111781567B (en) | T/R module with transceiver integrated self-diagnosis function | |
| US4127816A (en) | Carrier detect and automatic loopback circuit | |
| CN213457348U (en) | T/R module capable of realizing transmission channel diagnosis | |
| CN212514993U (en) | T/R module with receiving and transmitting integrated self-diagnosis function | |
| CN109613373B (en) | Electric automobile high-voltage loop protection diagnosis system and method and vehicle | |
| CN112969111B (en) | OAM demodulation circuit for optical module and optical module | |
| CN217467057U (en) | GPS antenna fault diagnosis circuit | |
| CN105911978A (en) | Vehicle control unit detection method, device and system | |
| CN215375738U (en) | Wire harness detection device and wire harness detection system | |
| CN211906270U (en) | 485 device and RS485 interface of self-adaptation serial bus polarity | |
| CN103004108B (en) | Luminous power detection method, device, equipment and optical module | |
| CN210863953U (en) | High-precision active power distribution assembly | |
| CN104122816A (en) | Electric vehicle high-speed digital input circuit | |
| CN208819328U (en) | A kind of echelette detection circuit | |
| CN103558603A (en) | Self-positioning parking auxiliary system without host computer | |
| CN209765033U (en) | High-sensitivity standing wave protection circuit of solid-state meteorological radar transmitter | |
| CN209764945U (en) | Acquisition circuit based on shunt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |