CN104459377A - Radio-frequency transmission type detecting circuit - Google Patents
Radio-frequency transmission type detecting circuit Download PDFInfo
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- CN104459377A CN104459377A CN201410661240.6A CN201410661240A CN104459377A CN 104459377 A CN104459377 A CN 104459377A CN 201410661240 A CN201410661240 A CN 201410661240A CN 104459377 A CN104459377 A CN 104459377A
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Abstract
The invention discloses a radio-frequency transmission type detecting circuit. The radio-frequency transmission type detecting circuit comprises a socket, a comparator A1, a comparator A, a diode D1, a light-emitting diode D3, a fuse B, a single-pole double-throw switch S, a resistor R2, a resistor R3, an AND gate B, a radio-frequency chip CC1101, a capacitor C2 and a charging capacitor C3, wherein the socket, the diode D1, the resistor R2, the a end of the single-pole double-throw switch S, the b end of the single-pole double-throw switch S, the resistor R3 and the light-emitting diode D3 are connected in sequence, the light-emitting diode D3 is grounded, the socket is also connected with the resistor R1, the resistor R1 is also connected with the direct input end of the comparator A1, the reverse input end of the comparator A1 is connected with the negative electrode of the diode D1, the output end of the comparator A1 is connected with one input end of the AND gate B, the other input end of the AND gate B is grounded, the output end of the AND gate B is connected with the radio-frequency chip CC1101, and the radio-frequency chip CC1101 is also connected with an antenna. Based on the principle, the radio-frequency transmission type detecting circuit has the advantages that whether a power supply is used up or an overcurrent happens to the circuit can be learnt through a radio-frequency transmission signal, and using is more convenient.
Description
Technical field
The present invention relates to testing circuit field, be specifically related to the testing circuit of radio-frequency transmissions type.
Background technology
Current cyberage, with the quickening pace of modern life, so the rhythm of our carry-on electric equipment also needs us to grasp at any time, use portable type electronic product, wish the remaining electricity can knowing battery at any time, the working time that can continue, and regulate related application accordingly, this will be a thing very easily undoubtedly.Battery electric quantity detection technique is of common occurrence in notebook computer, and most notebook computer has the option of power management, provides different power mode and battery alarm function.But in the portable product market of miniaturization more, this technology is but also rare.Nowadays for detect electricity device in cannot understand power supply by radio frequency transmissions and whether to be finished or whether circuit occurs overcurrent condition.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, the testing circuit of radio-frequency transmissions type is provided, can know whether power supply is finished or whether circuit occurs over-current phenomenon avoidance, uses more convenient by radio frequency transmissions.
For solving above-mentioned technical matters, the present invention is by the following technical solutions: the testing circuit of radio-frequency transmissions type, comprise socket, comparer A1, comparer A, diode D1, light emitting diode D3, fuse B, single-pole double-throw switch (SPDT) S, resistance R2, resistance R3, with door B, radio frequency chip CC1101, electric capacity C2 and charging capacitor C3, the a end of described socket, diode D1, resistance R2, single-pole double-throw switch (SPDT) S, the b end of single-pole double-throw switch (SPDT) S, resistance R3 are connected successively with light emitting diode D3, light emitting diode D3 ground connection wherein; Described socket is contact resistance R1 also, resistance R1 also connects the input end in the same way of comparer A1, the reverse input end of comparer A1 connects the negative pole of diode D1, the output terminal of comparer A1 connects an input end with door B, with another input end grounding of door B, be connected radio frequency chip CC1101 with the output terminal of door B, radio frequency chip CC1101 also connects antenna; Described resistance R1 and the common port of diode D1 are also connected the reverse input end of comparer A and the c end of single-pole double-throw switch (SPDT) S successively; The common port that described resistance R3 and the b of single-pole double-throw switch (SPDT) S hold also is connected drop-down electric capacity C2 and drop-down charging capacitor C3; The input end grounding in the same way of described comparer A, the output terminal of comparer A is held with the c of single-pole double-throw switch (SPDT) S and is connected.
After socket inserting power supply circuit energising, the voltage in the same way between input end and reverse input end of comparer A1 reduce on the occasion of, high level is exported at the output terminal of comparer A1, high level through with the effect of door B after just become low level, radio frequency chip CC1101 then can not pass through antenna transmission signal.Simultaneously due to socket inserting power supply, the a end of diode D1, resistance R2, single-pole double-throw switch (SPDT) and b end, the loop that resistance R3 and light emitting diode D3 connects to form successively is connected, and diode D3 is luminous, now drop-down charging capacitor C3 two ends charging, electric capacity C2 is then for the unwanted ripple of filtering.After charging capacitor C3 charging complete, charging capacitor C3 then can discharge, the pressure drop at diode D1 two ends is disappeared, thus make the output terminal of comparer A1 be low level, low level is by becoming high level again with the effect of door B, radio frequency chip CC1101 then can pass through antenna transmission signal, the situation of overcurrent or power supply are without the situation of electricity to remind other staff this testing circuit to occur, use more convenient, the a end of single-pole double-throw switch (SPDT) S and c termination are led to, load R3 and light emitting diode D3 powers by charging capacitor C3, the a end of single-pole double-throw switch (SPDT) is connected with c end simultaneously, comparer A and power supply are connected, the input terminal voltage in the same way of comparer A1 is raised, the reverse input end voltage of comparer A1 reduces, thus make the output terminal of comparer A1 become high level again, the a end of single-pole double-throw switch (SPDT) and b termination are led to, the like circulate.When input voltage is excessive, fuse B also can disconnecting circuit, avoids light emitting diode below to damage.The power of power supply electricity can be detected by the bright-dark degree observing light emitting diode D3 luminescence, detect quick and convenient.
Also connect input end in the same way and the reverse input end of comparer A2 respectively at resistance R2 two ends, the output terminal of comparer A2 connects a end of single-pole double-throw switch (SPDT) S.Input end in the same way and the reverse input end of comparer A2 is connected respectively at the two ends of resistance R2, the output terminal of comparer A2 also connects a end of single-pole double-throw switch (SPDT) S simultaneously, when the electric current flowing through resistance R2 two ends is excessive, the pressure drop at resistance R2 two ends is larger, the output terminal of comparer A2 exports high level, the a end of single-pole double-throw switch (SPDT) is separated with b end and a of single-pole double-throw switch (SPDT) end is also separated with c end, loop disconnects, and avoids excessive electric current to burn out electronic component light emitting diode in circuit and charging capacitor C3.And this structure is without the need to frequent replacing, can Reusability, reduce costs, and electric elements intact in protection circuit.
The input end in the same way of described comparer A2 is connected with the negative pole of diode D1, and the reverse input end of comparer A2 is held with a of single-pole double-throw switch (SPDT) S and is connected.With diode D1 with the use of, realize better metering function.
The a end of described single-pole double-throw switch (SPDT) S is also connected drop-down voltage stabilizing diode D2 with the common port of fuse B, the forward end ground connection of diode D2.Make circuit supply voltage more stable.
Described socket also connects drop-down electric capacity C1.For filtering out interference wave, avoid interference the impact of ripple on circuit.
The forward power end link of described comparer A also connects drop-down electric capacity C4.For the undesired signal of filtering near single-pole double-throw switch (SPDT).
Compared with prior art, the invention has the beneficial effects as follows:
1, connect and door and radio frequency chip CC1101 and emitting antenna at the output terminal of comparer A1, when power supply electricity is not enough or occur the situation of overcurrent in circuit, radio frequency chip then can send signal, reminds timely, uses more convenient and quicker.
2, special overcurrent protection part is set in the circuit, when the electric current flowing through resistance R2 two ends is excessive, then comparer A2 makes single-pole double-throw switch (SPDT) disconnect, thus reaches the effect of light emitting diode and charging voltage in protection circuit, avoids being burnt out by excessive electric current; And this structure is without the need to frequent replacing, can Reusability, reduce costs, and electric elements intact in protection circuit.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated, and embodiments of the invention are not limited thereto.
Embodiment 1:
As shown in Figure 1, the present invention includes socket, comparer A1, comparer A, diode D1, light emitting diode D3, fuse B, single-pole double-throw switch (SPDT) S, resistance R2, resistance R3, with door B, radio frequency chip CC1101, electric capacity C2 and charging capacitor C3, the a end of described socket, diode D1, resistance R2, single-pole double-throw switch (SPDT) S, the b end of single-pole double-throw switch (SPDT) S, resistance R3 are connected successively with light emitting diode D3, light emitting diode D3 ground connection wherein; Described socket is contact resistance R1 also, resistance R1 also connects the input end in the same way of comparer A1, the reverse input end of comparer A1 connects the negative pole of diode D1, the output terminal of comparer A1 connects an input end with door B, with another input end grounding of door B, be connected radio frequency chip CC1101 with the output terminal of door B, radio frequency chip CC1101 also connects antenna; Described resistance R1 and the common port of diode D1 are also connected the reverse input end of comparer A and the c end of single-pole double-throw switch (SPDT) S successively; The common port that described resistance R3 and the b of single-pole double-throw switch (SPDT) S hold also is connected drop-down electric capacity C2 and drop-down charging capacitor C3; The input end grounding in the same way of described comparer A, the output terminal of comparer A is held with the c of single-pole double-throw switch (SPDT) S and is connected.Wherein comparer model is MC74VHC1GT125DT, and the size of drop-down electric capacity C2 is 0.1 microfarad.
After socket inserting power supply circuit energising, the voltage in the same way between input end and reverse input end of comparer A1 reduce on the occasion of, high level is exported at the output terminal of comparer A1, high level through with the effect of door B after just become low level, radio frequency chip CC1101 then can not pass through antenna transmission signal.Simultaneously due to socket inserting power supply, the a end of diode D1, resistance R2, single-pole double-throw switch (SPDT) and b end, the loop that resistance R3 and light emitting diode D3 connects to form successively is connected, and diode D3 is luminous, now drop-down charging capacitor C3 two ends charging, electric capacity C2 is then for the unwanted ripple of filtering.After charging capacitor C3 charging complete, charging capacitor C3 then can discharge, the pressure drop at diode D1 two ends is disappeared, thus make the output terminal of comparer A1 be low level, low level is by becoming high level again with the effect of door B, radio frequency chip CC1101 then can pass through antenna transmission signal, the situation of overcurrent or power supply are without the situation of electricity to remind other staff this testing circuit to occur, use more convenient, the a end of single-pole double-throw switch (SPDT) S and c termination are led to, load R3 and light emitting diode D3 powers by charging capacitor C3, the a end of single-pole double-throw switch (SPDT) is connected with c end simultaneously, comparer A and power supply are connected, the input terminal voltage in the same way of comparer A1 is raised, the reverse input end voltage of comparer A1 reduces, thus make the output terminal of comparer A1 become high level again, the a end of single-pole double-throw switch (SPDT) and b termination are led to, the like circulate.When input voltage is excessive, fuse B also can disconnecting circuit, avoids light emitting diode below to damage.The power of power supply electricity can be detected by the bright-dark degree observing light emitting diode D3 luminescence, detect quick and convenient.
Embodiment 2:
The present embodiment is preferably as follows on the basis of embodiment 1: the input end in the same way and the reverse input end that also connect comparer A2 at resistance R2 two ends respectively, and the output terminal of comparer A2 connects a end of single-pole double-throw switch (SPDT) S.Input end in the same way and the reverse input end of comparer A2 is connected respectively at the two ends of resistance R2, the output terminal of comparer A2 also connects a end of single-pole double-throw switch (SPDT) S simultaneously, when the electric current flowing through resistance R2 two ends is excessive, the pressure drop at resistance R2 two ends is larger, the output terminal of comparer A2 exports high level, the a end of single-pole double-throw switch (SPDT) is separated with b end and a of single-pole double-throw switch (SPDT) end is also separated with c end, loop disconnects, and avoids excessive electric current to burn out electronic component light emitting diode in circuit and charging capacitor C3.And this structure is without the need to frequent replacing, can Reusability, reduce costs, and electric elements intact in protection circuit.
The input end in the same way of described comparer A2 is connected with the negative pole of diode D1, and the reverse input end of comparer A2 is held with a of single-pole double-throw switch (SPDT) S and is connected.With diode D1 with the use of, realize better metering function.
The a end of described single-pole double-throw switch (SPDT) S is also connected drop-down voltage stabilizing diode D2 with the common port of fuse B, the forward end ground connection of diode D2.Make circuit supply voltage more stable.
Described socket also connects drop-down electric capacity C1, size is 0.1 microfarad.For filtering out interference wave, avoid interference the impact of ripple on circuit.
The forward power end link of described comparer A also connects drop-down electric capacity C4.
Just this invention can be realized as mentioned above.
Claims (6)
1. the testing circuit of radio-frequency transmissions type, it is characterized in that: comprise socket, comparer A1, comparer A, diode D1, light emitting diode D3, fuse B, single-pole double-throw switch (SPDT) S, resistance R2, resistance R3, with door B, radio frequency chip CC1101, electric capacity C2 and charging capacitor C3, the a end of described socket, diode D1, resistance R2, single-pole double-throw switch (SPDT) S, the b end of single-pole double-throw switch (SPDT) S, resistance R3 are connected successively with light emitting diode D3, light emitting diode D3 ground connection wherein; Described socket is contact resistance R1 also, resistance R1 also connects the input end in the same way of comparer A1, the reverse input end of comparer A1 connects the negative pole of diode D1, the output terminal of comparer A1 connects an input end with door B, with another input end grounding of door B, be connected radio frequency chip CC1101 with the output terminal of door B, radio frequency chip CC1101 also connects antenna; Described resistance R1 and the common port of diode D1 are also connected the reverse input end of comparer A and the c end of single-pole double-throw switch (SPDT) S successively; The common port that described resistance R3 and the b of single-pole double-throw switch (SPDT) S hold also is connected drop-down electric capacity C2 and drop-down charging capacitor C3; The input end grounding in the same way of described comparer A, the output terminal of comparer A is held with the c of single-pole double-throw switch (SPDT) S and is connected.
2. the testing circuit of radio-frequency transmissions type according to claim 1, is characterized in that: the input end in the same way and the reverse input end that also connect comparer A2 at resistance R2 two ends respectively, and the output terminal of comparer A2 connects a end of single-pole double-throw switch (SPDT) S.
3. the testing circuit of radio-frequency transmissions type according to claim 2, is characterized in that: the input end in the same way of described comparer A2 is connected with the negative pole of diode D1, and the reverse input end of comparer A2 is held with a of single-pole double-throw switch (SPDT) S and is connected.
4. the testing circuit of radio-frequency transmissions type according to claim 1, is characterized in that: a end of described single-pole double-throw switch (SPDT) S is also connected drop-down voltage stabilizing diode D2 with the common port of fuse B, the forward end ground connection of diode D2.
5. the testing circuit of radio-frequency transmissions type according to claim 1, is characterized in that: described socket also connects drop-down electric capacity C1.
6. the testing circuit of radio-frequency transmissions type according to claim 1, is characterized in that: the forward power end link of described comparer A also connects drop-down electric capacity C4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410661240.6A CN104459377A (en) | 2014-11-19 | 2014-11-19 | Radio-frequency transmission type detecting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410661240.6A CN104459377A (en) | 2014-11-19 | 2014-11-19 | Radio-frequency transmission type detecting circuit |
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| Publication Number | Publication Date |
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| CN104459377A true CN104459377A (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410661240.6A Pending CN104459377A (en) | 2014-11-19 | 2014-11-19 | Radio-frequency transmission type detecting circuit |
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| CN (1) | CN104459377A (en) |
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| US4558226A (en) * | 1982-07-07 | 1985-12-10 | Tokyo Shibaura Denki Kabushiki Kaisha | Voltage detecting circuit with hysteresis characteristic and high noise immunity |
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| CN101718568A (en) * | 2009-12-30 | 2010-06-02 | 河南新天科技有限公司 | Automatic meter reading system for water meters through short messages |
| CN203054203U (en) * | 2012-12-25 | 2013-07-10 | 北京兆维电子(集团)有限责任公司 | Electric quantity monitoring device of wireless alarm |
| CN103364620A (en) * | 2012-03-27 | 2013-10-23 | 海洋王照明科技股份有限公司 | Power monitoring circuit and equipment |
| CN203334810U (en) * | 2013-06-13 | 2013-12-11 | 北京清畅电力技术股份有限公司 | Electronic key of electromagnetic lock |
| CN103454551A (en) * | 2013-09-09 | 2013-12-18 | 黄宇嵩 | Three-hole power socket fault detector |
| CN203387214U (en) * | 2013-06-17 | 2014-01-08 | 安科智慧城市技术（中国）有限公司 | Automobile emergency starting power supply and automobile power supply device |
| CN203490345U (en) * | 2013-10-22 | 2014-03-19 | 天津成科自动化工程技术有限公司 | Simple battery electric quantity measuring circuit based on analog comparator |
| CN104052130A (en) * | 2014-07-04 | 2014-09-17 | 山东大学 | Iron phosphate lithium battery power supply management system used for service robots and working method |
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2014
- 2014-11-19 CN CN201410661240.6A patent/CN104459377A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4558226A (en) * | 1982-07-07 | 1985-12-10 | Tokyo Shibaura Denki Kabushiki Kaisha | Voltage detecting circuit with hysteresis characteristic and high noise immunity |
| CN2228237Y (en) * | 1995-06-12 | 1996-05-29 | 陈少波 | Battery capacity detector |
| CN1752766A (en) * | 2004-09-22 | 2006-03-29 | 量质能科技股份有限公司 | Measuring method used for distinguishing whether secondary ballery is over discharged |
| CN101718568A (en) * | 2009-12-30 | 2010-06-02 | 河南新天科技有限公司 | Automatic meter reading system for water meters through short messages |
| CN103364620A (en) * | 2012-03-27 | 2013-10-23 | 海洋王照明科技股份有限公司 | Power monitoring circuit and equipment |
| CN203054203U (en) * | 2012-12-25 | 2013-07-10 | 北京兆维电子(集团)有限责任公司 | Electric quantity monitoring device of wireless alarm |
| CN203334810U (en) * | 2013-06-13 | 2013-12-11 | 北京清畅电力技术股份有限公司 | Electronic key of electromagnetic lock |
| CN203387214U (en) * | 2013-06-17 | 2014-01-08 | 安科智慧城市技术（中国）有限公司 | Automobile emergency starting power supply and automobile power supply device |
| CN103454551A (en) * | 2013-09-09 | 2013-12-18 | 黄宇嵩 | Three-hole power socket fault detector |
| CN203490345U (en) * | 2013-10-22 | 2014-03-19 | 天津成科自动化工程技术有限公司 | Simple battery electric quantity measuring circuit based on analog comparator |
| CN104052130A (en) * | 2014-07-04 | 2014-09-17 | 山东大学 | Iron phosphate lithium battery power supply management system used for service robots and working method |
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| C06 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20150325 |