CN219780154U - Online state monitoring device - Google Patents
Online state monitoring device Download PDFInfo
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- CN219780154U CN219780154U CN202321199644.9U CN202321199644U CN219780154U CN 219780154 U CN219780154 U CN 219780154U CN 202321199644 U CN202321199644 U CN 202321199644U CN 219780154 U CN219780154 U CN 219780154U
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Abstract
The utility model discloses an on-line state monitoring device, wherein an input port, an output port and a control port are arranged on a device shell, a directional coupler, a radio frequency circuit and a control circuit are arranged in the device, the input port is connected with an input port of the directional coupler, the output port is connected with an output port of the directional coupler, a coupling port of the directional coupler is connected with the radio frequency circuit, and the radio frequency circuit comprises an intermodulation standard component signal generating circuit and a radio frequency signal detecting circuit; the control port is connected with the control circuit. The device realizes the on-line monitoring of the state of the passive intermodulation test equipment, is convenient and quick, and is beneficial to ensuring the accuracy and the effectiveness of the passive intermodulation measurement result of the tested piece; the directional coupler is used for replacing the switch, so that the problems of service life and switching times limitation in switching of the switch are solved, the stability of the device is effectively improved, the use cost is reduced, and the product quality is improved.
Description
Technical Field
The utility model relates to the technical field of radio frequency passive device testing, in particular to an on-line state monitoring device for passive intermodulation test equipment.
Background
With the increase of mobile communication systems and the development of technology, the problem of passive intermodulation interference is receiving more and more attention, compared with active intermodulation, the generation mechanism of passive intermodulation is very complex, until now, it is not completely clear, in this case, passive intermodulation measurement is very important, and the measured data can be used for measuring the product performance on the one hand, and on the other hand, can also provide basis for researching passive intermodulation mechanism. At present, a passive intermodulation measurement theory and method are still under development, and the passive intermodulation measurement is usually carried out on a tested piece by adopting passive intermodulation test equipment in the prior art. For the performance of the passive intermodulation test equipment, the most critical index is the accuracy of passive intermodulation level measurement, and the index is mainly evaluated or checked by using the calibration of a passive intermodulation standard component, which is complicated and time-consuming, so that enterprises generally adopt a regular calibration mode to check the effectiveness of the equipment, and the evaluation and check mode can cause two problems, namely, the problems of the equipment cannot be found in time, and the measured result of the measured piece is incorrect; secondly, the alarm cannot be identified for the behavior of the human intervention in the test process affecting the test result. As passive intermodulation indexes are more and more valued, requirements are higher and higher, and meanwhile, industry price competition is more and more intense, and serious consequences can be brought to the problems in the two aspects. The market therefore needs an on-line passive intermodulation test equipment state detection device which needs to be independent of the passive intermodulation test equipment and can perform on-line detection on part of key indexes of the equipment, which is beneficial to ensuring the accuracy and the validity of passive intermodulation measurement results of tested pieces.
Related devices have been developed, such as chinese patent grant bulletin nos.: CN218481633U discloses an on-line performance monitoring device for passive intermodulation test equipment, which realizes on-line monitoring of performance of the passive intermodulation test equipment, but the device uses a switch switching state, because of limitations of power and other performance indexes (such as standing wave ratio), the switch can only use a relay mechanical switch, and the relay mechanical switch has limitations of service life and switching times, which results in increasing use cost, increasing failure rate, seriously affecting product stability and quality, and besides, the switch also has the problems of difficult realization of passive intermodulation indexes, insufficient power capacity and the like.
Disclosure of Invention
The utility model mainly aims to solve the problems that the existing passive intermodulation test equipment state detection device uses a relay mechanical switch to switch the working state, and the service life and the switching times of the relay mechanical switch are limited, so that the quality of the device is defective; the directional coupler is used for replacing the switch, so that the problems of service life and switching times limitation in switching of the switch are solved, the stability of the device is effectively improved, the use cost is reduced, and the product quality is improved; independent of the passive intermodulation test equipment, and is not controlled by the passive intermodulation test equipment.
In order to achieve the above object, the present utility model adopts the following technical scheme.
An on-line state monitoring device is provided with an INPUT port INPUT, an OUTPUT port OUTPUT and a Control port Control on a device shell, a directional coupler, a radio frequency circuit and a Control circuit are arranged IN the device, the INPUT port INPUT is connected with an INPUT port IN of the directional coupler, the OUTPUT port OUTPUT is connected with an OUTPUT port OUT of the directional coupler, and a coupling port COUP of the directional coupler is connected with the radio frequency circuit; the Control port Control is connected with the Control circuit. The utility model provides an on-line state (performance) monitoring device for passive intermodulation test equipment, wherein a directional coupler is arranged IN the device, the directional coupler is a radio frequency passive device and is generally composed of three ports (an isolation port is an internal port and is generally and directly connected with a load), an input port IN and an output port OUT are directly connected through a structure similar to a coaxial line inner conductor, which is equivalent to physical through connection, a coupling port COUP is connected with the input port IN through a coupling mode, and compared with the through mode, the coupling mode has larger insertion loss, but the sacrifice insertion loss is acceptable for a radio frequency circuit. Therefore, the directional coupler works in a direct connection state and a coupling state at the same time, and does not need to be switched by a switch, and for the direct connection state, the device is like a radio frequency adapter, and the output of the passive intermodulation test equipment and the passive intermodulation signal generated by a tested piece are not affected by any influence; for the coupling state, the device is a passive intermodulation test equipment state detection device, a radio frequency signal passes through an intermodulation standard component signal generation circuit or a radio frequency signal detection circuit to generate a specific signal or detect the characteristic parameter of the passing radio frequency signal, then the data is collected by an upper computer and compared with a set value, the state (performance) of the passive intermodulation test equipment is judged according to the comparison result, if the state (performance) does not reach the standard, alarm processing is carried out, real-time on-line monitoring of the state (performance) of the passive intermodulation test equipment is realized, convenience and rapidness are realized, the accuracy and the effectiveness of the passive intermodulation measurement result of a tested component are guaranteed, and meanwhile, the use ratio of the passive intermodulation test equipment is improved; independent of the passive intermodulation test equipment, and not controlled by the passive intermodulation test equipment; the directional coupler works in a direct connection state and a coupling state simultaneously, does not need switch switching, solves the problem that the service life and the switching times are limited in switch switching, effectively improves the stability of the device, reduces the use cost and improves the product quality.
Preferably, the radio frequency circuit includes an intermodulation standard signal generating circuit and a radio frequency signal detecting circuit. The radio frequency circuit is used for generating specific signals or testing passing radio frequency signal characteristic parameters, and mainly comprises two parts, namely an intermodulation standard component signal generating circuit (PIM Source) and a radio frequency signal detecting circuit (POWER Detector), wherein the PIM Source is used for generating specific nonlinear signal accessories on the passing radio frequency signals, the PIM Source receives commands from a computer upper computer to generate a constant passive intermodulation nonlinear signal higher than intermodulation values of a tested component, namely the upper computer sends commands to require to generate a constant level signal, the PIM Source generates signals according to the commands, passive intermodulation testing equipment measures the signals, upper computer software acquires measured values and compares the measured values with standard values, and alarm processing is carried out once the acquired results deviate from the standard value allowable range. The Power Detector is used for detecting characteristic parameters (including Power level, standing wave ratio and the like) of the passing radio frequency signals, the upper computer software collects detection values and compares the detection values with a set reference value, and once the collection results deviate from the allowable range of the set reference value, alarm processing is carried out.
Preferably, the control circuit is used for controlling the working state of the radio frequency circuit or returning an alarm parameter. The control circuit is used for controlling the radio frequency circuit or returning alarm parameters, and the circuit can be completed by a simple single chip microcomputer or an embedded system such as an FPGA.
Preferably, the INPUT port INPUT is externally connected with a radio frequency output port RF OUT of the passive intermodulation test equipment, and is used for collecting radio frequency signals output by the passive intermodulation test equipment. The INPUT port INPUT can be connected with the passive intermodulation test equipment through the radio frequency cable, and also can be directly connected with the passive intermodulation test equipment without passing through the radio frequency cable, so that the advantage is that primary connection is reduced, and the reliability and the effectiveness are improved.
Preferably, the OUTPUT port OUTPUT is externally connected with the tested piece. The OUTPUT port OUTPUT can be connected with the tested piece through the radio frequency cable, can also be directly connected with the tested piece, does not pass through the radio frequency cable, and has the advantages of reducing primary connection and improving reliability and effectiveness.
Preferably, the Control port Control is externally connected with an upper computer. The control port Contro is connected with the upper computer through a control line and is used for realizing data communication between the device and the upper computer. The upper computer sends a control instruction to the control circuit through the control port, and the control circuit controls the working state of the radio frequency circuit according to the control instruction; meanwhile, the upper computer collects data and compares the collected data with a set value, so that the real-time on-line monitoring of the state of the passive intermodulation test equipment is realized. The host computer functions may be integrated within the passive intermodulation test apparatus.
Preferably, the Control port Control is used simultaneously as a DC power supply port for supplying power to the internal circuitry of the device.
Preferably, the control circuit comprises a DC power supply circuit for powering the radio frequency circuit.
Therefore, the utility model has the advantages that:
(1) The real-time on-line monitoring of the state of the passive intermodulation test equipment is realized, the method is convenient and quick, the accuracy and the effectiveness of the passive intermodulation measurement result of the tested piece are guaranteed, and the utilization rate of the passive intermodulation test equipment is improved;
(2) Independent of the passive intermodulation test equipment, and not controlled by the passive intermodulation test equipment;
(3) The directional coupler works in a direct connection state and a coupling state simultaneously, does not need switch switching, solves the problem that the service life and the switching times are limited in switch switching, effectively improves the stability of the device, reduces the use cost and improves the product quality.
Drawings
Fig. 1 is a schematic structural diagram of an online status monitoring device according to an embodiment of the present utility model.
Fig. 2 is a schematic structural diagram of an on-line state monitoring device externally connected with passive intermodulation test equipment, a tested piece and an upper computer in an embodiment of the utility model.
1. The device comprises a directional coupler 2, a radio frequency circuit 3, a control circuit 4, an intermodulation standard component signal generating circuit (PIM Source) 5, a radio frequency signal detecting circuit (POWER Detector) 6, a presence monitoring device 7, passive intermodulation test equipment 8, a tested piece 9, an upper computer 10, a radio frequency cable 11 and a control line.
Detailed Description
The utility model is further described below with reference to the drawings and detailed description.
Embodiment one.
As shown IN fig. 1, an on-line state monitoring device 6 is provided with an INPUT port INPUT, an OUTPUT port OUTPUT and a Control port Control on a device shell, a directional coupler 1, a radio frequency circuit 2 and a Control circuit 3 are arranged IN the device, the INPUT port INPUT is connected with an INPUT port IN of the directional coupler 1, the OUTPUT port OUTPUT is connected with an OUTPUT port OUT of the directional coupler 1, and a coupling port COUP of the directional coupler 1 is connected with the radio frequency circuit 2; the Control port Control is connected to the Control circuit 3. The utility model provides an on-line state monitoring device 6 for passive intermodulation test equipment 7, wherein a directional coupler 1 is arranged IN the device, the directional coupler 1 is a radio frequency passive device and is generally composed of three ports (an isolation port is an internal port and is generally directly connected with a load), an input port IN and an output port OUT are directly connected through a structure similar to a coaxial line inner conductor, which is equivalent to physical through connection, a coupling port COUP is connected with the input port IN through a coupling mode, and compared with the through connection mode, the coupling mode has larger insertion loss, but the sacrifice insertion loss is acceptable for the function of a radio frequency circuit 2. Therefore, the directional coupler 1 works in a through state and a coupling state at the same time, and does not need to be switched by a switch, and for the through state, the device is like a radio frequency adapter, and the output of the passive intermodulation test equipment 7 and the passive intermodulation signal generated by the tested piece 8 are not affected by any influence; for the coupling state, the device is a passive intermodulation test equipment state detection device, radio frequency signals pass through an intermodulation standard component signal generation circuit 4 or a radio frequency signal detection circuit 5 to generate specific signals or detect the passing radio frequency signal characteristic parameters, then data (including a measurement result of signals generated by the passive intermodulation test equipment 7 on PIM Source or a detection result of the POWER Detector on the radio frequency signal characteristic parameters) are collected through an upper computer 9 and compared with a set value, the state (performance) of the passive intermodulation test equipment 7 is judged according to the comparison result, if the state (performance) does not reach the standard, alarm processing is carried out to realize real-time online monitoring of the state (performance) of the passive intermodulation test equipment 7, convenience and rapidness are realized, the accuracy and the effectiveness of the passive intermodulation measurement result of the tested component 8 are guaranteed, and meanwhile, the use ratio of the passive intermodulation test equipment 7 is improved; independent of the passive intermodulation test equipment 7, and not controlled by the passive intermodulation test equipment 7; the directional coupler 1 is used for replacing a switch, the directional coupler 1 works in a direct-connection state and a coupling state at the same time, switching of the switch is not needed, the problem that the service life and the switching times of switching of the switch are limited is solved, the stability of the device is effectively improved, the use cost is reduced, and the product quality is improved.
As shown in fig. 1, the radio frequency circuit 2 includes an intermodulation standard signal generating circuit 4 and a radio frequency signal detecting circuit 5. The radio frequency circuit 2 is used for generating specific signals or testing the characteristic parameters of passing radio frequency signals, and mainly comprises two parts, namely an intermodulation standard component signal generating circuit 4 (PIM Source) or a radio frequency signal detecting circuit 5 (POWER Detector), wherein the PIM Source is used for generating specific nonlinear signal accessories on the passing radio frequency signals, receiving a command from a computer upper computer 9, generating a constant passive intermodulation nonlinear signal higher than the intermodulation value of a tested component 8, namely the upper computer 9 sends a command to require to generate a constant level signal, the PIM Source generates signals according to the command, the passive intermodulation testing device 7 measures the signals, the upper computer 9 software acquires measured values and compares the measured values with standard values, and once the acquired results deviate from the standard value allowable range, alarm processing is carried out. The Power Detector is used for detecting characteristic parameters (including Power level, standing wave ratio and the like) of the passing radio frequency signals, the upper computer 9 software collects detection values and compares the detection values with a set reference value, and once the collection results deviate from the allowable range of the set reference value, alarm processing is carried out.
The control circuit 3 is used to control the operating state of the radio frequency circuit 2 (generating intermodulation standard signals or testing radio frequency signal characteristic parameters) or to return alarm parameters. The control circuit 3 is used for controlling the radio frequency circuit 2 or returning alarm parameters, and the circuit can be completed by a simple single chip microcomputer or an embedded system such as an FPGA.
As shown in fig. 2, the INPUT port INPUT is externally connected with a radio frequency output port RF OUT of the passive intermodulation test device 7, and is used for collecting radio frequency signals output by the passive intermodulation test device 7. The INPUT port INPUT can be connected with the passive intermodulation test equipment 7 through the radio frequency cable 10, and can also be directly connected with the passive intermodulation test equipment 7 without passing through the radio frequency cable 10, so that the advantage is that primary connection is reduced, and the reliability and the effectiveness are improved.
As shown in fig. 2, the OUTPUT port OUTPUT is externally connected to the measured piece 8. The OUTPUT port OUTPUT can be connected with the tested piece 8 through the radio frequency cable 10, and can also be directly connected with the tested piece 8 without passing through the radio frequency cable 10, so that the advantage is that one-stage connection is reduced, and the reliability and the effectiveness are improved.
As shown in fig. 2, the Control port Control is externally connected to the host computer 9. The control port Contro is connected with the upper computer 9 through a control line 11 and is used for realizing data communication between the device and the upper computer 9. The upper computer 9 sends a control instruction to the control circuit 3 through the control port, and the control circuit 3 controls the working state of the radio frequency circuit 2 according to the control instruction; meanwhile, the upper computer 9 collects data and compares the collected data with a set value, so that real-time on-line monitoring of the state (performance) of the passive intermodulation test equipment 7 is realized. The upper computer 9 functions may be integrated within the passive intermodulation test apparatus 7.
The Control port Control also serves as a DC power supply port for supplying power to the internal circuitry of the device.
The control circuit 3 comprises a DC supply circuit for supplying the radio frequency circuit 2.
Embodiment two.
The specific structure of the device, as shown in fig. 1, comprises:
the port: two RF ports, INPUT and OUTPUT, respectively, with 7/16 or 4.3/10 connectors; a Control port Control, which also contains a DC power port for powering the internal circuit board, is proposed to use a USB type interface for simplicity of operation.
Directional coupler 1: the directional coupler 1 works in a direct state and a coupling state at the same time, does not need to switch, and is like a radio frequency adapter for the direct state of radio frequency signals, and the output of the passive intermodulation test equipment 7 and the passive intermodulation signal generated by the tested piece 8 are not affected by any influence; for the coupled state, the radio frequency signal enters the INPUT or OUTPUT port through intermodulation standard signal generating circuit 4 (PIM Source) or radio frequency signal detecting circuit 5 (POWER Detector). The directional coupler 1 is a radio frequency passive device, and is generally composed of three ports (an isolation port is an internal port, and is generally and directly connected with a load), the input port IN and the output port OUT are directly connected through a structure similar to a coaxial line inner conductor, which is equivalent to that of a physical through coupling mode, and the coupling port COUP is connected with the input port IN a coupling mode, compared with the through coupling mode, the coupling mode has larger insertion loss, but for PIM Source or POWER Detector, the sacrificial insertion loss is acceptable, and does not influence the PIM Source to generate specific signals or the characteristic parameters of radio frequency signals passed by the POWER Detector test, and is even more accurate. The directional coupler 1 is internally composed of two lines, a main line and a sub line, and power transmitted in the main line is coupled to the sub line through various paths and interferes with each other to be transmitted in only one direction in the sub line. The power coupled to the secondary line is very small, such as one ten thousandth, relative to the power transmitted in the primary line, which is negligible for the primary line pass-through, the device acts like a radio frequency adapter; while the power part coupled to the secondary line, i.e. the rf signal passing through the rf circuit 2, is sufficient for the rf circuit 2 to generate an intermodulation standard signal based thereon or to test the characteristic parameters of the passing rf signal.
Radio frequency circuit 2: the rf circuit 2 is configured to generate a specific signal or test a characteristic parameter of a passing rf signal, and mainly consists of two parts, namely an intermodulation standard component signal generating circuit 4 (PIM Source) or an rf signal detecting circuit 5 (POWER Detector), wherein the PIM Source is configured to generate a specific nonlinear signal attached to the passing rf signal, receive a command from the computer host 9, generate a constant passive intermodulation nonlinear signal (such as-100 dBm) higher than an intermodulation value (such as-110 dBm) of a tested component 8 (such as a tested antenna), that is, the host computer 9 sends a command to require generating a constant level signal (standard value), the PIM Source generates a signal according to the command, the passive intermodulation testing device 7 measures the signal, the host computer 9 software collects a measured value and compares the measured value with the standard value, and performs an alarm process once the collected result deviates from an allowable range (such as-3 dB) of the standard value. The Power Detector is used for detecting characteristic parameters (including Power level, standing wave ratio and the like) of the passing radio frequency signals, the upper computer 9 software collects detection values and compares the detection values with a set reference value, and once the collection results deviate from the allowable range of the set reference value, alarm processing is carried out. The device may be configured to operate in one of the above-described circuits (PIM Source and POWER Detector) in response to a command from the CONTROL port CONTROL. According to the actual test requirement, the actual online detection device can be configured with only one or both functions.
Control circuit 3: the control circuit 3 is used for controlling the radio frequency circuit 2 or returning alarm parameters, and the circuit can be completed by a simple single chip microcomputer or an embedded system such as an FPGA. The circuit further comprises a DC supply circuit for supplying the radio frequency circuit 2.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (8)
1. The on-line state monitoring device is characterized IN that an INPUT port INPUT, an OUTPUT port OUTPUT and a Control port Control are arranged on a device shell, a directional coupler, a radio frequency circuit and a Control circuit are arranged IN the device, the INPUT port INPUT is connected with an INPUT port IN of the directional coupler, the OUTPUT port OUTPUT is connected with an OUTPUT port OUT of the directional coupler, and a coupling port COUP of the directional coupler is connected with the radio frequency circuit; the Control port Control is connected with the Control circuit.
2. The on-line status monitoring device of claim 1 wherein the radio frequency circuitry comprises intermodulation standard signal generation circuitry and radio frequency signal detection circuitry.
3. An on-line status monitoring device according to claim 1 or 2, wherein the control circuit is configured to control the operating status of the radio frequency circuit or to return an alarm parameter.
4. The on-line status monitoring device of claim 1, wherein the INPUT port INPUT is externally connected to a radio frequency output port of a passive intermodulation test apparatus.
5. The device of claim 1 or 4, wherein the OUTPUT port is externally connected to the test piece.
6. The device for on-line status monitoring according to claim 1 or 4, wherein the Control port Control is externally connected to the host computer.
7. An on-line status monitoring device according to claim 1, wherein the Control port Control is used simultaneously as a DC power supply port for powering the internal circuitry of the device.
8. An on-line status monitoring device according to claim 1 or 7, wherein the control circuit comprises a DC power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321199644.9U CN219780154U (en) | 2023-05-18 | 2023-05-18 | Online state monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321199644.9U CN219780154U (en) | 2023-05-18 | 2023-05-18 | Online state monitoring device |
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| Publication Number | Publication Date |
|---|---|
| CN219780154U true CN219780154U (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321199644.9U Active CN219780154U (en) | 2023-05-18 | 2023-05-18 | Online state monitoring device |
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| CN (1) | CN219780154U (en) |
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- 2023-05-18 CN CN202321199644.9U patent/CN219780154U/en active Active
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