CN104063977B - There is leaky cable detector discharger and the system of temperature self-compensation function - Google Patents
There is leaky cable detector discharger and the system of temperature self-compensation function Download PDFInfo
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- CN104063977B CN104063977B CN201310089100.1A CN201310089100A CN104063977B CN 104063977 B CN104063977 B CN 104063977B CN 201310089100 A CN201310089100 A CN 201310089100A CN 104063977 B CN104063977 B CN 104063977B
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Abstract
The invention discloses the leaky cable detector discharger and system with temperature self-compensation function so that detector still can export stable transmitting power when variations in temperature is big in the wild, it is ensured that stablizing of equipment performance.Its technical scheme is: discharger includes crystal oscillating circuit, promotes circuit and power amplification circuit, wherein crystal oscillating circuit produces a radio service frequency signal, this service frequency signal is amplified to promotion circuit and adjusts by output, it is then communicated to export after power amplification circuit carries out power amplification, device also includes automatic temperature control circuit, the outfan of automatic temperature control circuit connects power amplification circuit, it is provided that a variable size regulating Voltage Cortrol power amplification circuit output.
Description
Technical field
The present invention relates to leaky cable detector, particularly relate to can in the outdoor situation that variation of ambient temperature is bigger the leaky cable detector of normal operation.
Background technology
Leakage cable intrusion detector is a kind of based on the outdoor perimeter intrusion detecting equipment based on radio transmitting, reception and signal processing, it is mainly used in the Important building periphery such as bank, airport, villa, government bodies, public security prison, military target, enterprise warehouse, with guard and alarm for main purpose.Disguise, electromagnetic wave solid space that its Shallow-Embedded Under-Ground is installed are taken precautions against, the feature of all weather operations obtains the approval that market is more and more many.
The leaky cable line that system is very processed by detector main frame and two Gents forms.Detector main frame is made up of discharger, reception device, process device and power supply.
Transmitter unit produces high-frequency energy feed-in and transmits along firing cable, portion of energy is let out seam by leaky cable and is leak into space, setting up electromagnetic field within the scope of by guard space, a portion energy is installed in the reception cable reception on side, forms the coupling of transmitting-receiving energy.When invader enters in the induction zone that these two cables are formed, this part electromagnetic energy is disturbed, and causes the change receiving signal, is detected, and promotes alarm lamp to light and open relay contact after the amplified process of signal of this change.
Owing to leakage cable intrusion detector is mainly used in outside work, South China boreal climate is widely different, north minimum temperature in winter-30 DEG C～-40 DEG C.South summer high-temperature reaches 40 DEG C～50 DEG C, and relatively the temperature difference of overall situation causes the instability of machine performance, becomes apparent from especially as leakage cable intrusion detector critical piece transmitter unit temperature influence.Because along with the change of ambient temperature, the transmitting power of discharger also has obvious change, and machine sensitivity changes therewith, the job stability of equipment receives large effect.
Summary of the invention
It is an object of the invention to solve the problems referred to above, provide a kind of leaky cable detector discharger with temperature self-compensation function, make detector still can export stable transmitting power when variations in temperature is big in the wild, it is ensured that stablizing of equipment performance.
It is a further object of the present invention to provide a kind of leaky cable detector system with temperature self-compensation function so that detector still can export stable transmitting power when variations in temperature is big in the wild, it is ensured that stablizing of equipment performance.
The technical scheme is that and present invention is disclosed a kind of leaky cable detector discharger with temperature self-compensation function, including crystal oscillating circuit, promote circuit and power amplification circuit, wherein crystal oscillating circuit produces a radio service frequency signal, this service frequency signal is amplified to promotion circuit and adjusts by output, it is then communicated to export after power amplification circuit carries out power amplification, described device also includes automatic temperature control circuit, the outfan of automatic temperature control circuit connects power amplification circuit, the one variable size regulating Voltage Cortrol power amplification circuit output is provided.
One embodiment of the leaky cable detector discharger with temperature self-compensation function according to the present invention, automatic temperature control circuit includes:
Integrating control chip, has input, output and ground, and its input connects a supply voltage, and outfan connects power amplification circuit, is used for providing this adjustment voltage to power amplification circuit；
Critesistor, first end connects the earth terminal of integrating control chip, second end ground connection, critesistor resistance when ambient temperature raises becomes big so that the adjustment voltage of integrating control chip output raises, and then the output controlling power amplification circuit becomes big, otherwise, critesistor resistance when ambient temperature reduces diminishes so that the adjustment voltage of integrating control chip output reduces, and then the output controlling power amplification circuit reduces, complete the process of auto-compensating power.
One embodiment of the leaky cable detector discharger with temperature self-compensation function according to the present invention, automatic temperature control circuit also includes:
First resistance, is connected between the output and ground of integrating control chip；
Second resistance, is connected between the earth terminal of integrating control chip and the first end of critesistor；
First electric capacity, is connected between the input of integrating control chip and the second end of critesistor；
Second electric capacity, is connected between the outfan of integrating control chip and the second end of critesistor.
One embodiment of the leaky cable detector discharger with temperature self-compensation function according to the present invention, automatic temperature control circuit also includes:
Outputting inductance, is connected between outfan and the power amplification circuit of integrating control chip.
Present invention further teaches a kind of leaky cable detector system with temperature self-compensation function, including discharger, receive device, process device, output device and power supply, discharger includes crystal oscillating circuit, promote circuit and power amplification circuit, wherein crystal oscillating circuit produces a radio service frequency signal, this service frequency signal is amplified to promotion circuit and adjusts by output, it is then communicated to export after power amplification circuit carries out power amplification, described device also includes automatic temperature control circuit, the outfan of automatic temperature control circuit connects power amplification circuit, the one variable size regulating Voltage Cortrol power amplification circuit output is provided.
One embodiment of the leaky cable detector system with temperature self-compensation function according to the present invention, automatic temperature control circuit includes:
Integrating control chip, has input, output and ground, and its input connects a supply voltage, and outfan connects power amplification circuit, is used for providing this adjustment voltage to power amplification circuit；
Critesistor, first end connects the earth terminal of integrating control chip, second end ground connection, critesistor resistance when ambient temperature raises becomes big so that the adjustment voltage of integrating control chip output raises, and then the output controlling power amplification circuit becomes big, otherwise, critesistor resistance when ambient temperature reduces diminishes so that the adjustment voltage of integrating control chip output reduces, and then the output controlling power amplification circuit reduces, complete the process of auto-compensating power.
One embodiment of the leaky cable detector system with temperature self-compensation function according to the present invention, automatic temperature control circuit also includes:
First resistance, is connected between the output and ground of integrating control chip；
Second resistance, is connected between the earth terminal of integrating control chip and the first end of critesistor；
First electric capacity, is connected between the input of integrating control chip and the second end of critesistor；
Second electric capacity, is connected between the outfan of integrating control chip and the second end of critesistor.
One embodiment of the leaky cable detector system with temperature self-compensation function according to the present invention, automatic temperature control circuit also includes:
Outputting inductance, is connected between outfan and the power amplification circuit of integrating control chip.
The present invention contrasts prior art following beneficial effect: the solution of the present invention is to install the circuit adopting temperature self-compensation technology in the discharger of leaky cable detector, the adjustment voltage that power amplification circuit one that this circuit is supplied in discharger is variable, by regulating the effect of voltage, reach the effect of auto-compensating power.Relative to prior art, leaky cable detector variations in temperature in the wild is the invention enables to export stable transmitting power when big, thus ensureing stablizing of equipment performance.
Accompanying drawing explanation
Fig. 1 illustrates the complete machine structure figure of the preferred embodiment of the leaky cable detector system with temperature self-compensation function of the present invention.
Fig. 2 illustrates the block diagram of the preferred embodiment of the leaky cable detector discharger with temperature self-compensation function of the present invention.
Fig. 3 illustrates the electrical schematic diagram of the preferred embodiment of the leaky cable detector discharger with temperature self-compensation function of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 illustrates the overall structure of the embodiment of the leaky cable detector system with temperature self-compensation function of the present invention, the system of the present embodiment includes main frame 1 and two leaky cables 2,3, and wherein main frame 1 farther includes discharger 11, receives device 12, processes device 13, output device 14 and power supply 15.Discharger 11 connects leaky cable 2, receives device 12 and connects leaky cable 3.
The internal structure of discharger 11 refers to Fig. 2, discharger 11 includes crystal oscillating circuit 112, promotes circuit 113, power amplification circuit 114 and automatic temperature control circuit 111, wherein crystal oscillating circuit 112 produces a radio service frequency signal, output, to promoting circuit 113 this service frequency signal is amplified and adjusts, is then communicated to export after power amplification circuit 114 carries out power amplification.The input of automatic temperature control circuit 111 connects power supply 15, and outfan connects power amplification circuit 114, it is provided that a variable size regulating Voltage Cortrol power amplification circuit 114 output.
Here the circuit theory of automatic temperature control circuit 111 refers to Fig. 3, and automatic temperature control circuit includes: integrating control chip LM317, critesistor RX, the first resistance R5, the second resistance R6, the first electric capacity C4, the second electric capacity C5 and outputting inductance L2.
Integrating control chip has input VIN, outfan VOUT and earth terminal GND, and its input VIN connects a supply voltage, and outfan connects power amplification circuit 114 by outputting inductance L2, is used for providing this adjustment voltage to power amplification circuit 114.This height regulating voltage determines the size of power amplifier output, and when this voltage rises, the power of power amplifier output raises；Otherwise, when this regulates voltage reduction, power amplifier output just reduces.
First end of critesistor RX connects the second end ground connection of the earth terminal GND, critesistor RX of integrating control chip by the second resistance R6.The effect of critesistor RX is: along with its parameter of change of ambient temperature can change therewith.Critesistor RX resistance when ambient temperature raises becomes big, the adjustment voltage that integrating control chip exports is raised, and then the output controlling power amplification circuit 114 becomes big, compensate for owing to ambient temperature increased wattage amplifying circuit 114 output reduces this portion of energy；Otherwise, critesistor RX resistance when ambient temperature reduces diminishes so that the adjustment voltage of integrating control chip output reduces, and then the output controlling power amplification circuit 114 reduces, and completes the process of auto-compensating power.
Above-described embodiment is available to those of ordinary skill in the art and realizes and use the present invention's; those of ordinary skill in the art can be without departing from the present invention in the case of the inventive idea; above-described embodiment is made various modifications or change; thus protection scope of the present invention is not limit by above-described embodiment, and the maximum magnitude of the inventive features that claims are previously mentioned should be consistent with.
Claims (4)
1. a leaky cable detector discharger with temperature self-compensation function, including crystal oscillating circuit, promote circuit and power amplification circuit, wherein crystal oscillating circuit produces a radio service frequency signal, this service frequency signal is amplified to promotion circuit and adjusts by output, it is then communicated to export after power amplification circuit carries out power amplification, it is characterized in that, described device also includes automatic temperature control circuit, the outfan of automatic temperature control circuit connects power amplification circuit, the one variable size regulating Voltage Cortrol power amplification circuit output is provided；
Wherein automatic temperature control circuit includes:
Integrating control chip, has input, output and ground, and its input connects a supply voltage, and outfan connects power amplification circuit, is used for providing this adjustment voltage to power amplification circuit；
Critesistor, first end connects the earth terminal of integrating control chip, second end ground connection, critesistor resistance when ambient temperature raises becomes big so that the adjustment voltage of integrating control chip output raises, and then the output controlling power amplification circuit becomes big, otherwise, critesistor resistance when ambient temperature reduces diminishes so that the adjustment voltage of integrating control chip output reduces, and then the output controlling power amplification circuit reduces, complete the process of auto-compensating power；
First resistance, is connected between the output and ground of integrating control chip；
Second resistance, is connected between the earth terminal of integrating control chip and the first end of critesistor；
First electric capacity, is connected between the input of integrating control chip and the second end of critesistor；
Second electric capacity, is connected between the outfan of integrating control chip and the second end of critesistor.
2. the leaky cable detector discharger with temperature self-compensation function according to claim 1, it is characterised in that automatic temperature control circuit also includes:
Outputting inductance, is connected between outfan and the power amplification circuit of integrating control chip.
3. a leaky cable detector system with temperature self-compensation function, including discharger, receive device, process device, output device and power supply, discharger includes crystal oscillating circuit, promote circuit and power amplification circuit, wherein crystal oscillating circuit produces a radio service frequency signal, this service frequency signal is amplified to promotion circuit and adjusts by output, it is then communicated to export after power amplification circuit carries out power amplification, it is characterized in that, described discharger also includes automatic temperature control circuit, the outfan of automatic temperature control circuit connects power amplification circuit, the one variable size regulating Voltage Cortrol power amplification circuit output is provided；
Wherein automatic temperature control circuit includes:
Integrating control chip, has input, output and ground, and its input connects a supply voltage, and outfan connects power amplification circuit, is used for providing this adjustment voltage to power amplification circuit；
Critesistor, first end connects the earth terminal of integrating control chip, second end ground connection, critesistor resistance when ambient temperature raises becomes big so that the adjustment voltage of integrating control chip output raises, and then the output controlling power amplification circuit becomes big, otherwise, critesistor resistance when ambient temperature reduces diminishes so that the adjustment voltage of integrating control chip output reduces, and then the output controlling power amplification circuit reduces, complete the process of auto-compensating power；
First resistance, is connected between the output and ground of integrating control chip；
Second resistance, is connected between the earth terminal of integrating control chip and the first end of critesistor；
First electric capacity, is connected between the input of integrating control chip and the second end of critesistor；
Second electric capacity, is connected between the outfan of integrating control chip and the second end of critesistor.
4. the leaky cable detector system with temperature self-compensation function according to claim 3, it is characterised in that automatic temperature control circuit also includes:
Outputting inductance, is connected between outfan and the power amplification circuit of integrating control chip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310089100.1A CN104063977B (en) | 2013-03-20 | 2013-03-20 | There is leaky cable detector discharger and the system of temperature self-compensation function |
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| CN201310089100.1A CN104063977B (en) | 2013-03-20 | 2013-03-20 | There is leaky cable detector discharger and the system of temperature self-compensation function |
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| CN104063977A CN104063977A (en) | 2014-09-24 |
| CN104063977B true CN104063977B (en) | 2016-07-06 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349309A (en) * | 2000-10-18 | 2002-05-15 | 深圳市中兴通讯股份有限公司 | Gain temperature compensator for transceiver |
| CN201025553Y (en) * | 2007-01-22 | 2008-02-20 | 上海申达自动防范系统工程有限公司 | Motive leakage cable intrusion detector |
| CN101656511A (en) * | 2009-09-04 | 2010-02-24 | 惠州市正源微电子有限公司 | Temperature compensating circuit of radio frequency power amplifier |
| CN101877160A (en) * | 2009-04-30 | 2010-11-03 | 上海申达自动防范系统工程有限公司 | Leakage cable intrusion detector system |
| TWI377461B (en) * | 2008-05-15 | 2012-11-21 | Pixart Imaging Inc | Reference voltage adjustment circuits for temperature compensation and related transmitter devices |
| CN203217694U (en) * | 2013-03-20 | 2013-09-25 | 上海申达自动防范系统工程有限公司 | Leaky cable locator transmitting device and leaky cable locator transmitting system having automatic temperature compensation function |
-
2013
- 2013-03-20 CN CN201310089100.1A patent/CN104063977B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1349309A (en) * | 2000-10-18 | 2002-05-15 | 深圳市中兴通讯股份有限公司 | Gain temperature compensator for transceiver |
| CN201025553Y (en) * | 2007-01-22 | 2008-02-20 | 上海申达自动防范系统工程有限公司 | Motive leakage cable intrusion detector |
| TWI377461B (en) * | 2008-05-15 | 2012-11-21 | Pixart Imaging Inc | Reference voltage adjustment circuits for temperature compensation and related transmitter devices |
| CN101877160A (en) * | 2009-04-30 | 2010-11-03 | 上海申达自动防范系统工程有限公司 | Leakage cable intrusion detector system |
| CN101656511A (en) * | 2009-09-04 | 2010-02-24 | 惠州市正源微电子有限公司 | Temperature compensating circuit of radio frequency power amplifier |
| CN203217694U (en) * | 2013-03-20 | 2013-09-25 | 上海申达自动防范系统工程有限公司 | Leaky cable locator transmitting device and leaky cable locator transmitting system having automatic temperature compensation function |
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| CN104063977A (en) | 2014-09-24 |
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Effective date of registration: 20170802 Address after: 201207 Shanghai City, Pudong New Area Chinese Jing (Shanghai) Free Trade Zone No. 351 Building No. 2 room A635-01 Patentee after: SHANGHAI WULING SHENGTONG INFORMATION TECHNOLOGY CO., LTD. Address before: 200063 Wuning Road, Shanghai, No. 423, No. Patentee before: Shanghai Shenda Automatic Guard System Engineering Co. Ltd. |
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