CN203233422U - Mobile phone signal detector - Google Patents
Mobile phone signal detector Download PDFInfo
- Publication number
- CN203233422U CN203233422U CN2013201987295U CN201320198729U CN203233422U CN 203233422 U CN203233422 U CN 203233422U CN 2013201987295 U CN2013201987295 U CN 2013201987295U CN 201320198729 U CN201320198729 U CN 201320198729U CN 203233422 U CN203233422 U CN 203233422U
- Authority
- CN
- China
- Prior art keywords
- electric capacity
- resistance
- capacitor
- integrated circuit
- mobile phone
- 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.)
- Expired - Fee Related
Links
Landscapes
- Amplifiers (AREA)
Abstract
The utility model discloses a mobile phone signal detector which comprises an operation amplifier, an integration circuit, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a buzzer, a power supply, a circuit breaker, a light emitting diode and a transistor. The negative pole output end of a power supply is respectively connected with the first end of the buzzer, the first end of the second capacitor, the first end of the fourth capacitor, the first end of the eighth capacitor, the first end of the ninth capacitor, the negative pole input end of the light emitting diode, the first input end of the integration circuit, the first end of the sixth capacitor and the first end of the second resistor. The mobile phone signal detector provided by the utility model can solve the detection problem of a mobile phone signal in some specific situations in which a communication tool needs to be restricted without affecting other people, is simple and reliable, and has the advantages of easy use and high sensitivity.
Description
Technical field
The utility model relates to a kind of detector of responding to the mobile phone electromagnetic signal, relates in particular to a kind of mobile phone signal detector.
Background technology
In the various examinations of country, the situation that indivedual examinees carry communication tool privately secretly remains incessant after repeated prohibition, and attempts by the illegal use mobile phone in the examination hall to have a strong impact on fairness and the seriousness of examination to reach the purpose that examination reaches a standard.If adopt manually the examinee to be checked one by one, delay time at stop not only, and be easy to influence examinee's mood.
The utility model content
The purpose of this utility model provides mobile phone signal detector a kind of easy to use, simple and reliable with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises operational amplifier, integrated circuit, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, buzzer, power supply, disconnect, light-emitting diode and transistor, the cathode output end of described power supply respectively with first end of described buzzer, first end of described second electric capacity, first end of described the 4th electric capacity, first end of described the 8th electric capacity, first end of described the 9th electric capacity, the negative pole of described light-emitting diode, the first input end of integrated circuit, first end of described the 6th electric capacity, first end of described second resistance connects, the cathode output end of described power supply respectively with first end of described first resistance, first end of described the 4th resistance, first end of described the 5th resistance, first end of described the 6th resistance, the 8th input of described integrated circuit is connected with four-input terminal, the five terminal of described integrated circuit is connected with second end of described the 8th electric capacity, the 3rd end of described integrated circuit is connected with second end of described buzzer, the 6th end of described integrated circuit and the 7th end of described integrated circuit are connected with second end of described the 6th resistance and second end of described the 9th electric capacity respectively, second end of described integrated circuit is connected with second end of described the 5th resistance and first end of described the 7th electric capacity respectively, the electrode input end of described operational amplifier respectively with second end of described first resistance, second end of described second resistance, second end of described the 3rd electric capacity first end and described the 4th electric capacity is connected, the negative pole utmost point input of described operational amplifier respectively with first end of described first electric capacity, first end of described the 3rd resistance, second end of described second electric capacity is connected with second end of the 3rd electric capacity, described transistorized base stage respectively with the output of described operational amplifier, second end of described the 3rd resistance, second end of described the 6th electric capacity connects, described transistorized collector electrode is connected with second end of described the 4th resistance and second end of described the 7th resistance respectively, described transistorized emitter is connected with the positive pole of described light-emitting diode, second end of described first electric capacity is connected with transmitting antenna, and described disconnect is arranged on by the described power supply.
Particularly, be connected with the 5th electric capacity on the described operational amplifier.
The beneficial effects of the utility model are:
The utility model can not influence under other people situation when some specific occasion need be limited communication tool, solves the problem that detects of mobile phone signal, and is simple and reliable, easy to use, highly sensitive.
Description of drawings
Fig. 1 is circuit diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, the utility model comprises operational amplifier CA, integrated circuit (IC), first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 6th capacitor C 6, the 7th capacitor C 7, the 8th capacitor C 8, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, buzzer BL, power supply U, disconnect S, LED and transistor VT1, the cathode output end of power supply U respectively with first end of buzzer BL, first end of second capacitor C 2, first end of the 4th capacitor C 4, first end of the 8th capacitor C 8, first end of the 9th capacitor C 9, the negative input of LED, the first input end of integrated circuit (IC), first end of the 6th capacitor C 6, first end of second resistance R 2 connects, the cathode output end of power supply U respectively with first end of first resistance R 1, first end of the 4th resistance R 4, first end of the 5th resistance R 5, first end of the 6th resistance R 6, the 8th input of integrated circuit (IC) is connected with four-input terminal, the five terminal of integrated circuit (IC) is connected with second end of the 8th capacitor C 8, the 3rd end of integrated circuit (IC) is connected with second end of buzzer BL, the 6th end of integrated circuit (IC) and the 7th end of integrated circuit (IC) are connected with second end of the 6th resistance R 6 and second end of the 9th capacitor C 9 respectively, second end of integrated circuit (IC) is connected with second end of the 5th resistance R 5 and first end of the 7th capacitor C 7 respectively, the electrode input end of operational amplifier CA respectively with second end of first resistance R 1, second end of second resistance R 2, second end of the 3rd capacitor C 3 first ends and the 4th capacitor C 4 is connected, the negative pole utmost point input of operational amplifier CA respectively with first end of first capacitor C 1, first end of the 3rd resistance R 3, second end of second capacitor C 2 is connected with second end of the 3rd capacitor C 3, the base stage of transistor VT1 respectively with the output of operational amplifier CA, second end of the 3rd resistance R 3, second end of the 6th capacitor C 6 connects, the collector electrode of transistor VT1 is connected with R4 second end of the 4th resistance and second end of the 7th resistance R 7 respectively, the emitter of transistor VT1 is connected with the electrode input end of LED, second end of first capacitor C 1 is connected with transmitting antenna ANT, disconnect S is arranged on by the power supply U, is connected with the 5th capacitor C 5 on the operational amplifier CA.
The utility model uses the disk electric capacity (C3) of a 0.22pF according to radio circuit, to guarantee the ability of circuit, catches mobile phone signal.This mobile phone detector can detect the activity of any mobile phone, import into or spread out of note, it is 18 millimeters that the C3 electric capacity of video transmission or voice transfer must have the length of the information between information and the 8 millimeters spacings, to obtain required frequency, the radiofrequency signal that this minidisk electric capacity is collected as the loop aerial of a little gigahertz, operational amplifier IC uses current-to-voltage convertor, this can be used for verifying active mobile phone of existence at test zone, the existence of the cell phone that can activate from one and half meters far away distance perspective.
Claims (2)
1. mobile phone signal detector, it is characterized in that: comprise operational amplifier, integrated circuit, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 6th electric capacity, the 7th electric capacity, the 8th electric capacity, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, buzzer, power supply, disconnect, light-emitting diode and transistor, the cathode output end of described power supply respectively with first end of described buzzer, first end of described second electric capacity, first end of described the 4th electric capacity, first end of described the 8th electric capacity, first end of described the 9th electric capacity, the negative pole of described light-emitting diode, the first input end of integrated circuit, first end of described the 6th electric capacity, first end of described second resistance connects, the cathode output end of described power supply respectively with first end of described first resistance, first end of described the 4th resistance, first end of described the 5th resistance, first end of described the 6th resistance, the 8th input of described integrated circuit is connected with four-input terminal, the five terminal of described integrated circuit is connected with second end of described the 8th electric capacity, the 3rd end of described integrated circuit is connected with second end of described buzzer, the 6th end of described integrated circuit and the 7th end of described integrated circuit are connected with second end of described the 6th resistance and second end of described the 9th electric capacity respectively, second end of described integrated circuit is connected with second end of described the 5th resistance and first end of described the 7th electric capacity respectively, the electrode input end of described operational amplifier respectively with second end of described first resistance, second end of described second resistance, second end of described the 3rd electric capacity first end and described the 4th electric capacity is connected, the negative pole utmost point input of described operational amplifier respectively with first end of described first electric capacity, first end of described the 3rd resistance, second end of described second electric capacity is connected with second end of the 3rd electric capacity, described transistorized base stage respectively with the output of described operational amplifier, second end of described the 3rd resistance, second end of described the 6th electric capacity connects, described transistorized collector electrode is connected with second end of described the 4th resistance and second end of described the 7th resistance respectively, described transistorized emitter is connected with the positive pole of described light-emitting diode, second end of described first electric capacity is connected with transmitting antenna, and described disconnect is arranged on by the described power supply.
2. a kind of mobile phone signal detector according to claim 1 is characterized in that: be connected with the 5th electric capacity on the described operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201987295U CN203233422U (en) | 2013-04-19 | 2013-04-19 | Mobile phone signal detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201987295U CN203233422U (en) | 2013-04-19 | 2013-04-19 | Mobile phone signal detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203233422U true CN203233422U (en) | 2013-10-09 |
Family
ID=49289523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201987295U Expired - Fee Related CN203233422U (en) | 2013-04-19 | 2013-04-19 | Mobile phone signal detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203233422U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320202A (en) * | 2014-11-14 | 2015-01-28 | 成都市思码特科技有限公司 | Mobile phone signal detector applied to examination room |
-
2013
- 2013-04-19 CN CN2013201987295U patent/CN203233422U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320202A (en) * | 2014-11-14 | 2015-01-28 | 成都市思码特科技有限公司 | Mobile phone signal detector applied to examination room |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105137260A (en) | Circuit for detecting the state of active antenna | |
| CN102445590A (en) | Current detection circuit used for judging state of an antenna | |
| CN203233422U (en) | Mobile phone signal detector | |
| CN201773459U (en) | Anti-theft device for storage battery in mobile communication base station | |
| CN204256101U (en) | Fuse circuit for detecting and there is the charging circuit of this fuse circuit for detecting | |
| CN203180933U (en) | Radio frequency detector | |
| CN202676180U (en) | Dismounting detection apparatus for active RFID electronic label | |
| CN203224576U (en) | Simple-type electromagnetic radiation detector | |
| CN103616606A (en) | JP cabinet electric leakage alarm apparatus | |
| CN203813774U (en) | Signal transmitting-receiving system of line finder | |
| CN202094278U (en) | Mobile terminal with embedded radio frequency identification devices (RFID) antenna | |
| CN202421281U (en) | Current detecting circuit for judging state of antenna | |
| CN202956454U (en) | Intelligent arrester detection device based on wireless synchronization | |
| CN208026789U (en) | A kind of radio-based electronic devices safety monitoring device | |
| CN203503108U (en) | Anti-interference cell phone detector | |
| CN202837465U (en) | Circuit for detecting output port connection state of power amplification module | |
| CN206524924U (en) | A kind of microphone | |
| CN203178725U (en) | Single-chip-microcomputer (SCM)-based data collector circuit | |
| CN203537326U (en) | Power amplifier of radio frequency signal output module | |
| CN205027636U (en) | PM2. 5 display instrument based on bluetooth | |
| CN203722627U (en) | BNC line finding system | |
| CN204244249U (en) | Mobile phone signal detector | |
| CN203084130U (en) | Gps antenna state detection circuit | |
| CN202815068U (en) | Long-distance safe electroscope used for high-voltage transmission line | |
| CN203178163U (en) | Portable Bluetooth detector for fine particulate matters |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20140419 |