CN210431407U - Radio signal tester - Google Patents
Radio signal tester Download PDFInfo
- Publication number
- CN210431407U CN210431407U CN201922177857.1U CN201922177857U CN210431407U CN 210431407 U CN210431407 U CN 210431407U CN 201922177857 U CN201922177857 U CN 201922177857U CN 210431407 U CN210431407 U CN 210431407U
- Authority
- CN
- China
- Prior art keywords
- signal
- input end
- output end
- local oscillator
- circuit
- 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 radio signal tester, include: the system comprises an antenna, a signal acquisition circuit, a processing circuit, a baseband processor, a local oscillator and a display; wherein the antenna is used for receiving radio signals; the local oscillator is used for transmitting the generated local oscillator signal to the signal acquisition circuit through the second end; the signal acquisition circuit is used for transmitting the intermediate frequency signal obtained by mixing the radio signal and the local oscillator signal to the processing circuit in a serial mode through the baseband processor; the processing circuit is used for extracting channel frequency and signal intensity from the intermediate frequency signal after analog-to-digital conversion of the baseband processor as display information; the display is used for displaying the display information. Therefore, the engineering technicians can conveniently judge the acquisition terminal suitable for the station through the display information of the display, the working efficiency of the engineering technicians is improved, and the engineering maintenance amount is reduced.
Description
Technical Field
The utility model belongs to the technical field of test instrument, especially, relate to a radio signal tester.
Background
At present, a large number of power utilization acquisition terminals adopt a public network for wireless data transmission.
When the power consumption collection terminals are installed and maintained, due to the special distribution of the power consumption collection terminals, the power consumption collection terminals are often distributed in closed environments such as cellars, staircases and the like, and the signal condition of an installation site is information which needs to be known in engineering installation and maintenance.
In the prior art, due to the lack of instruments with the testing function of multiple operators and multiple mobile communication systems, the power consumption acquisition terminal cannot find the radio environment problem in time before installation, so that the power consumption acquisition terminal cannot work normally or is good and bad after installation. And during engineering maintenance, the fault cannot be accurately judged. Great trouble and inconvenience are brought to engineering constructors and operation and maintenance personnel, and further great cost is increased.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a radio signal tester for solve and bring very big puzzlement and inconvenient technical problem for engineering constructor and operation and maintenance personnel because lack the instrument that has many operators many mobile communication standard test function.
The utility model discloses a radio signal tester, include:
the system comprises an antenna, a signal acquisition circuit, a processing circuit, a baseband processor, a local oscillator and a display;
the output end of the antenna is connected with the first input end of the signal acquisition circuit; for receiving a radio signal;
the first end of the local oscillator is connected with the second input end of the signal acquisition circuit, and the second end of the local oscillator is connected with the first output end of the processing circuit; the local oscillator signal is used for transmitting the generated local oscillator signal to the signal acquisition circuit through a second end;
the output end of the signal acquisition circuit is connected with the first input end of the baseband processor; the intermediate frequency signal after mixing the radio signal and the local oscillator signal is transmitted to the processing circuit in a serial mode through the baseband processor;
the second output end of the processing circuit is connected with the input end of the display; the intermediate frequency signal processing module is used for extracting channel frequency and signal intensity from the intermediate frequency signal after analog-to-digital conversion of the baseband processor as display information;
the display is used for displaying the display information.
Preferably, the signal acquisition circuit specifically includes:
the device comprises a first band-pass filter, a preamplifier, a second band-pass filter, a mixer, a sound meter filter, an intermediate frequency amplifier and an I/Q demodulator;
the input end of the first band-pass filter is used as the input end of the signal acquisition circuit, and the output end of the first band-pass filter is connected with the input end of the preamplifier; the output end of the preamplifier is connected with the input end of the second band-pass filter, and the output end of the second band-pass filter is connected with the first input end of the mixer;
the second end of the frequency mixer is used as the second input end of the signal acquisition circuit, and the output end of the frequency mixer is connected with the input end of the acoustic meter filter; the local oscillator is used for mixing the radio signal and the local oscillator signal into an intermediate frequency signal;
the output end of the acoustic meter filter is connected with the input end of the intermediate frequency amplifier;
the output end of the intermediate frequency amplifier is connected with the input end of the I/Q demodulator;
and the output end of the I/Q demodulator is connected with the input end of the baseband processor.
Preferably, the method further comprises the following steps:
a GPS module and a GPS antenna;
the output end of the GPS module is connected with the third input end of the processing circuit;
the GPS module is used for realizing positioning.
Preferably, the method further comprises the following steps:
a SIM card module;
the output end of the SIM card module is connected with the fourth input end of the processing circuit;
the SIM card module is used for identifying the SIM card in the SIM card module.
Preferably, the method further comprises the following steps:
a lighting circuit;
the input end of the lighting circuit is connected with the third output end of the processing circuit;
the lighting circuit is used for realizing lighting.
Preferably, the device further comprises a keyboard;
the output end of the keyboard is connected with the fifth input end of the processing circuit;
the keyboard is used for realizing the on or off of the lighting circuit and the input of the local oscillation frequency.
The utility model discloses a radio signal tester, include: the system comprises an antenna, a signal acquisition circuit, a processing circuit, a baseband processor, a local oscillator and a display; wherein the antenna is used for receiving radio signals; the local oscillator is used for transmitting the generated local oscillator signal to the signal acquisition circuit through the second end; the signal acquisition circuit is used for transmitting the intermediate frequency signal obtained by mixing the radio signal and the local oscillator signal to the processing circuit in a serial mode through the baseband processor; the processing circuit is used for extracting channel frequency and signal intensity from the intermediate frequency signal after analog-to-digital conversion of the baseband processor as display information; the display is used for displaying the display information. Therefore, the engineering technicians can conveniently judge the acquisition terminal suitable for the station through the display information of the display, the working efficiency of the engineering technicians is improved, and the engineering maintenance amount is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a radio signal tester provided in an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a radio signal tester provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a radio signal tester provided in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a radio signal tester provided in an embodiment of the present invention.
The utility model discloses a radio signal tester, include:
the system comprises an antenna 1, a signal acquisition circuit 2, a processing circuit 3, a baseband processor 4, a local oscillator 5 and a display 6;
the output end of the antenna 1 is connected with the first input end of the signal acquisition circuit 2; the antenna 1 is used for receiving radio signals;
a first end of the local oscillator 5 is connected with a second input end of the signal acquisition circuit, and a second end of the local oscillator 5 is connected with a first output end of the processing circuit 3; the local oscillator 5 is configured to transmit the generated local oscillator signal to the signal acquisition circuit 2 through the second end;
the output end of the signal acquisition circuit 2 is connected with the first input end of the baseband processor 4; the signal acquisition circuit 2 is configured to transmit the intermediate frequency signal obtained by mixing the radio signal with the local oscillator signal to the processing circuit 3 in a serial manner through the baseband processor;
a second output end of the processing circuit 3 is connected with an input end of the display; the intermediate frequency signal processing module is used for extracting the channel frequency and the signal intensity from the intermediate frequency signal after the analog/digital conversion of the baseband processor 4 as display information;
the display 6 is used for displaying the display information.
The embodiment of the utility model provides an in, the parameter that radio signal tester is long wide can be 20 10 cm, conveniently carries, certainly also can customize according to actual need. Can be directly hung on a waistband or fixed on an arm, and is very small and convenient.
In the embodiment of the utility model provides an in, antenna 1 receives radio signal. Can receive 2G, 3G, 4G and other radio signals, and operators include but are not limited to mobile, Unicom, telecommunication.
The signal acquisition circuit 2 mixes the received radio signal with a local oscillator signal output by the local oscillator 5 to an intermediate frequency signal and transmits the intermediate frequency signal to the processing circuit 3 through the baseband processor 4. It can be understood that the signal acquisition circuit 2 may be integrated with the function of a mixer, and the mixing technology belongs to the prior art, and the utility model does not relate to the improvement of the method and the algorithm.
It will be appreciated that the local oscillator signal emitted by the local oscillator 5 may be set by the processing circuitry 5.
The processing circuit 5 can adopt a common singlechip or a processor in the prior art, and the function is realized by a mature technology in the prior art.
The processing circuit 5 may adopt a mature technology in the prior art to separate the digital data signal processed by the baseband processor 4, extract display information such as an operator, a communication system, a region code, a channel frequency, a signal strength, and the like, and then display the information through the display 6.
The display 6 may be a touch display screen or a liquid crystal screen, as long as display information can be displayed, and is not particularly limited.
In order to save labor cost and improve working efficiency, a large number of wireless meter reading terminals are adopted for meter reading operation, but due to the fact that an instrument with a multi-operator multi-mobile communication system testing function is lacked, great trouble and inconvenience are brought to installation and maintenance of engineering, and the wireless meter reading terminals cannot normally work due to radio environment problems and cannot timely make accurate fault judgment during engineering maintenance, so that great cost is invisibly increased.
Therefore, in the embodiment of the utility model provides an in, can directly receive radio signal through antenna 1, produce local oscillator 5 through signal acquisition circuit 2 and get local oscillator signal mixing and transmit processing circuit 3 through baseband processor 4 and extract display information and show in display 6. The radio signal tester has the testing function of multiple operators and multiple mobile communication systems, can test the 4G/3G/2G signal intensity and analyze the signal characteristics (including indexes such as operator codes, cell identification numbers, channel numbers (BCCH for GSM), field intensity and the like), displays the test result through the liquid crystal screen, facilitates the engineering technicians to judge the acquisition terminals suitable for the sites, improves the working efficiency and quality of the engineering technicians and reduces the engineering maintenance amount.
Referring to fig. 2, fig. 2 is another schematic structural diagram of a radio signal tester provided in the embodiment of the present invention.
On the basis of the above embodiment, the signal acquisition circuit specifically includes:
a first band pass filter 201, a preamplifier 202, a second band pass filter 203, a mixer 204, a sound table filter 205, an intermediate frequency amplifier 206, an I/Q demodulator 207;
the input end of the first band-pass filter is used as the input end of the signal acquisition circuit, and the output end of the first band-pass filter is connected with the input end of the preamplifier; the output end of the preamplifier is connected with the input end of the second band-pass filter, and the output end of the second band-pass filter is connected with the first input end of the mixer;
the second end of the frequency mixer is used as the second input end of the signal acquisition circuit, and the output end of the frequency mixer is connected with the input end of the acoustic meter filter; the local oscillator is used for mixing the radio signal and the local oscillator signal into an intermediate frequency signal;
the output end of the acoustic meter filter is connected with the input end of the intermediate frequency amplifier;
the output end of the intermediate frequency amplifier is connected with the input end of the I/Q demodulator;
and the output end of the I/Q demodulator is connected with the input end of the baseband processor.
The embodiment of the utility model provides an in, the radio signal that receives from antenna 1 gets into preamplifier 202 through the first band pass filter 201 of frequency width, the signal after the amplification is again through second band pass filter filtering 203, subsequently through mixer 204 and local oscillator 5 mixing, produce the intermediate frequency IF signal, again through surface acoustic wave filter 205 filtering, the intermediate frequency amplifier 206 that gets into to have automatic gain control enlargies, then send the IF signal to I/Q demodulator 207, demodulate out two way signals of I and Q, the baseband treater is sent to the I, Q modulated signal of quadrature, through analog/digital conversion and equalization processing, then send digital data signal with serial mode control center to handle.
It can be understood that the function that the concrete device in the signal acquisition circuit has is the original function of device among the prior art, the utility model discloses do not relate to the improvement to method, algorithm in the patent.
On the basis of the foregoing embodiment, referring to fig. 3, fig. 3 is a schematic structural diagram of a radio signal tester provided in an embodiment of the present invention.
Preferably, the method further comprises the following steps:
a GPS module 8 and a GPS antenna 7;
the output end of the GPS module is connected with the third input end of the processing circuit;
the GPS module is used for realizing positioning.
Preferably, the method further comprises the following steps:
a SIM card module 10;
the output end of the SIM card module is connected with the fourth input end of the processing circuit;
the SIM card module is used for identifying the SIM card in the SIM card module.
Preferably, the method further comprises the following steps:
a lighting circuit;
the input end of the lighting circuit is connected with the third output end of the processing circuit;
the lighting circuit is used for realizing lighting.
Preferably, a keyboard 9 is also included;
the output end of the keyboard is connected with the fifth input end of the processing circuit;
the keyboard is used for realizing the on or off of the lighting circuit and the input of the local oscillation frequency.
The embodiment of the utility model provides an in, the SIM card recognition function that radio signal field intensity tester has can help engineering maintainer to judge fast and be signal field intensity problem, or the data service problem, also or SIM card arrearage still the terminal problem, improves engineering maintenance efficiency greatly.
The utility model discloses a radio signal tester is the field strength tester of an ideal quick, high accuracy, price/performance ratio of a section to excellent sensitivity can provide multiple test function, covers extremely wide application, can carry out the omnidirectional test to the mobile communication signal of each operator's full standard. Has the advantages of small size, light weight, strong cruising ability, high sensitivity and the like. Compared with the existing instruments in the market, the instrument has the same mobile or connected GPRS field intensity test function, and has the following innovation:
1. the mobile communication signal test supporting multiple operators: mobile communication signal test capable of measuring three operators of mobile, communication and telecommunication
2. The signal test supporting multiple mobile communication systems: can measure 4G/3G/2G radio signal field intensity
3. The signal analysis supporting multiple mobile communication systems: operator code, cell identification number, channel number (BCCH for GSM) of 4G/3G/2G mobile communication signal can be identified and displayed
4. SIM card recognition function: the SIM card slot is arranged, the information such as operator attribution, card number and the like of the SIM card can be identified, and whether the SIM card is arrearage or not can be discriminated
5. The flashlight has the following functions: because the meter reading terminal is basically arranged in a dark place such as a well or a basement, and the work of field operators can be facilitated by the flashlight function.
6. GPS positioning function: the built-in GPS antenna can be used for quickly positioning, and can inquire a real-time single-point position, a real-time running track and a historical running track through background software.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A radio signal tester, comprising:
the system comprises an antenna, a signal acquisition circuit, a processing circuit, a baseband processor, a local oscillator and a display;
the output end of the antenna is connected with the first input end of the signal acquisition circuit; for receiving a radio signal;
the first end of the local oscillator is connected with the second input end of the signal acquisition circuit, and the second end of the local oscillator is connected with the first output end of the processing circuit; the local oscillator signal is used for transmitting the generated local oscillator signal to the signal acquisition circuit through a second end;
the output end of the signal acquisition circuit is connected with the first input end of the baseband processor; the intermediate frequency signal after mixing the radio signal and the local oscillator signal is transmitted to the processing circuit in a serial mode through the baseband processor;
the second output end of the processing circuit is connected with the input end of the display; the intermediate frequency signal processing module is used for extracting channel frequency and signal intensity from the intermediate frequency signal after analog-to-digital conversion of the baseband processor as display information;
the display is used for displaying the display information.
2. The radio signal tester of claim 1, wherein the signal acquisition circuit specifically comprises:
the device comprises a first band-pass filter, a preamplifier, a second band-pass filter, a mixer, a sound meter filter, an intermediate frequency amplifier and an I/Q demodulator;
the input end of the first band-pass filter is used as the input end of the signal acquisition circuit, and the output end of the first band-pass filter is connected with the input end of the preamplifier; the output end of the preamplifier is connected with the input end of the second band-pass filter, and the output end of the second band-pass filter is connected with the first input end of the mixer;
the second end of the frequency mixer is used as the second input end of the signal acquisition circuit, and the output end of the frequency mixer is connected with the input end of the acoustic meter filter; the local oscillator is used for mixing the radio signal and the local oscillator signal into an intermediate frequency signal;
the output end of the acoustic meter filter is connected with the input end of the intermediate frequency amplifier;
the output end of the intermediate frequency amplifier is connected with the input end of the I/Q demodulator;
and the output end of the I/Q demodulator is connected with the input end of the baseband processor.
3. The radio signal tester of claim 1, further comprising:
a GPS module and a GPS antenna;
the output end of the GPS module is connected with the third input end of the processing circuit;
the GPS module is used for realizing positioning.
4. The radio signal tester of claim 1, further comprising:
a SIM card module;
the output end of the SIM card module is connected with the fourth input end of the processing circuit;
the SIM card module is used for identifying the SIM card in the SIM card module.
5. The radio signal tester of claim 1, further comprising:
a lighting circuit;
the input end of the lighting circuit is connected with the third output end of the processing circuit;
the lighting circuit is used for realizing lighting.
6. The radio signal tester as claimed in any one of claims 1 to 5, further comprising a keyboard;
the output end of the keyboard is connected with the fifth input end of the processing circuit;
the keyboard is used for realizing the on or off of the lighting circuit and the input of the local oscillation frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922177857.1U CN210431407U (en) | 2019-12-07 | 2019-12-07 | Radio signal tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922177857.1U CN210431407U (en) | 2019-12-07 | 2019-12-07 | Radio signal tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210431407U true CN210431407U (en) | 2020-04-28 |
Family
ID=70370091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922177857.1U Active CN210431407U (en) | 2019-12-07 | 2019-12-07 | Radio signal tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210431407U (en) |
-
2019
- 2019-12-07 CN CN201922177857.1U patent/CN210431407U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3025190B2 (en) | How to measure and collect electric field strength | |
| CN103581995A (en) | Method for measuring coverage performance of mobile communication network | |
| CN110212936A (en) | Wireless signal detection device, system and method | |
| CN109451509B (en) | NB-IOT base station signal measuring equipment and its measuring processing method | |
| CN101166336B (en) | Road measuring and recording device and system | |
| CN107682100A (en) | A kind of method and device of specific region intelligent terminal information gathering positioning | |
| CN210431407U (en) | Radio signal tester | |
| CN208241900U (en) | A kind of NB-IOT road detector | |
| CN1897507B (en) | Electric tester and testing method for SCDMA system | |
| CN211979058U (en) | CAU performance test device | |
| CN207706340U (en) | A kind of TV signal detecting system based on FI1256 high-frequency tuners | |
| CN1980100B (en) | Real-time continuous wide-band wire-less transmitting detection method and apparatus | |
| CN105611507A (en) | Mobile network optimization data collection method based on Android terminal | |
| CN111308226A (en) | CAU performance test device | |
| CN203136175U (en) | Public mobile communication base station testing system | |
| CN116095822A (en) | Interference source positioning method and device, electronic equipment and nonvolatile storage medium | |
| CN101945373A (en) | Method and device for acquiring network signal quality information | |
| CN104244177A (en) | Signal illiteracy eliminating system based on received signal strength indications and implementation method of signal illiteracy eliminating system based on received signal strength indications | |
| CN102932076B (en) | A kind of sensitivity test method based on mobile terminal FM receiver and system | |
| CN203590237U (en) | A portable wireless channel analyzer | |
| KR101898809B1 (en) | Method and system for maintaining wireless network of mobile communication | |
| CN216795006U (en) | Listening device for V2X communication | |
| CN202172411U (en) | Intelligent antenna multi-user interference detection apparatus | |
| CN209593767U (en) | Support the equipment for realizing the measurement of NB-IOT base station signal | |
| CN108375699A (en) | DMB field portable intensity measurers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |