CN203324355U - Microwave-system diverse self-checking circuit - Google Patents

Microwave-system diverse self-checking circuit Download PDF

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Publication number
CN203324355U
CN203324355U CN2013203887287U CN201320388728U CN203324355U CN 203324355 U CN203324355 U CN 203324355U CN 2013203887287 U CN2013203887287 U CN 2013203887287U CN 201320388728 U CN201320388728 U CN 201320388728U CN 203324355 U CN203324355 U CN 203324355U
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China
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resistance
circuit
logic device
microwave
checking
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CN2013203887287U
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王德发
张年
刘东恒
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Wuxi Huace Electronic System Co Ltd
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Wuxi Huace Electronic System Co Ltd
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Abstract

The utility model discloses a microwave-system diverse self-checking circuit. The circuit comprises a current detection circuit, a power detection circuit, a temperature detection circuit and a programmable logic device. An input terminal of the programmable logic device is connected with output signals of the current detection circuit, the power detection circuit and the temperature detection circuit respectively. An output terminal of the programmable logic device forms an output signal of the microwave-system diverse self-checking circuit. By using the circuit of the utility model, a current change, a temperature change and emission power of the self-checking microwave system can be realized; a self-checking technology principle is simple; components are less and cost is low; practicality is high; the circuit is suitable for demands of miniaturization and intelligence developments of the microwave system.

Description

The various self-checking circuit of microwave system
Technical field
The utility model relates to the microwave system self-checking, the various self-checking circuit of microwave system that particularly a kind of self check content comprises temperature, electric current, power.
Background technology
Increasingly mature along with microwave technology, also more and more higher to the requirement of microwave system, and the important indicators such as temperature, electric current, power also become the emphasis of self check.Can feed back in time duty and the stable case of microwave system by the self check of these indexs, relatively monitor arrives the trouble spot of system, thereby reduces technician's servicing time and cost, greatly improves the efficiency of product repairing.In view of the importance of self check, research and develop a kind of suitable various self-checking circuit, become active demand in the industry.
The utility model content
The purpose of this utility model is to provide a kind of microwave system various self-checking circuit, realizes that the oneself detects variation, temperature variation and the emissive power of the electric current of microwave system.
The technical solution of the utility model is as follows:
The various self-checking circuit of a kind of microwave system, comprise current detection circuit, power-sensing circuit, temperature sensing circuit and Programmadle logic device; The input end of described Programmadle logic device connects respectively the output signal of current detection circuit, power-sensing circuit, temperature sensing circuit, and the output terminal of described Programmadle logic device forms the output signal of the various self-checking circuit of microwave system.
Its further technical scheme is: described current detection circuit comprises sample resistance, the first resistance, the second resistance, the 3rd resistance, the first electric capacity, the second electric capacity and the first comparer; Described the first resistance is connected between power supply and load, and described sample resistance is in parallel with the first resistance, the sample resistance ground connection after the second resistance, the 3rd resistance of connecting; The in-phase input end of described the first comparer is connected between the second resistance, the 3rd resistance, and inverting input connects reference voltage signal, and output terminal connects the Programmadle logic device; Described the first electric capacity and the second Capacitance parallel connection are between VDD-to-VSS.
Its further technical scheme is: described power-sensing circuit comprises detector diode, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 3rd electric capacity and the second comparer; The negative pole of described detector diode connects the microwave detection signal, ground connection after anodal series connection the 4th resistance; Described the 3rd electric capacity is in parallel with the 4th resistance; Be connected with the positive pole of detector diode after inverting input series connection the 5th resistance of described the second comparer, after in-phase input end series connection the 6th resistance, connect the nominal voltage signal, and ground connection after the 7th resistance of connecting, output terminal connects the Programmadle logic device.
Its further technical scheme is: described temperature sensing circuit comprises temperature sensor, and the output terminal of described temperature sensor connects the Programmadle logic device.
Useful technique effect of the present utility model is:
The utility model, aspect the electric current self check, adopts the less sample resistance of resistance, and electric current produces voltage after resistance, intercept applicable electrical voltage point with bleeder circuit after amplifying, compare with reference voltage, then be converted to low and high level, thus the current conditions of understanding internal system.The detection power aspect, adopt detector diode that microwave signal is converted to voltage signal, then with the comparer through adjustable threshold, compares, and is converted to low and high level.The temperature detection aspect only need to define temperature accuracy on temperature sensor, finally temperature detection result is reached to the Programmadle logic device together with current detecting result, power detection result and gets final product.Self-checking principle of the present utility model is simple, and circuit components and parts used are few, and cost is low, and practicality is high, is suitable for the demand of microwave system to miniaturization, intelligent development.
The additional advantage of the utility model provides in embodiment description partly below, and part will become obviously from the following description, or recognize by practice of the present utility model.
The accompanying drawing explanation
Fig. 1 is logic diagram of the present utility model.
Fig. 2 is the schematic diagram of current detection circuit.
Fig. 3 is the schematic diagram of power-sensing circuit.
Fig. 4 is the schematic diagram of temperature sensing circuit and Programmadle logic device.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.
Fig. 1 shows logic diagram of the present utility model.As shown in Figure 1, composition of the present utility model comprises: current detection circuit, power-sensing circuit, temperature sensing circuit and Programmadle logic device.The output signal of current detection circuit, power-sensing circuit, temperature sensing circuit is connected to respectively the input end of Programmadle logic device, and the output terminal of Programmadle logic device forms the output signal of the various self-checking circuit of microwave system.
Fig. 2 shows a kind of specific embodiment of current detection circuit.As shown in Figure 2, in this specific embodiment, current detection circuit mainly consists of sample resistance R, resistance R 1~R3, capacitor C 1 and C2, comparer A1.Resistance R 1 is connected between power Vcc and load, and sample resistance R is in parallel with resistance R 1.After capacitor C 1 and C2 parallel connection, be connected between power Vcc and ground.Sample resistance R resistance in series R2, the rear ground connection of resistance R 3.The in-phase input end of comparer A1 is connected between resistance R 2, R3, and its inverting input connects reference voltage signal V1, and its output end signal is current detecting Tout1 as a result, is connected to the Programmadle logic device.
The principle of current detecting is that the sample resistance R that the employing resistance is less intercepts electric current on resistance R 1 both sides, then obtains applicable voltage by divider resistance R2, R3, then with the reference voltage V 1 of setting, compares.If the voltage obtained is higher than V1, Tout1 is high level; If the voltage obtained is lower than V1, Tout1 is low level.
Fig. 3 shows a kind of specific embodiment of power-sensing circuit.As shown in Figure 3, in this specific embodiment, power-sensing circuit mainly consists of detector diode U1, resistance R 4~R7, capacitor C 3 and comparer A2.The negative pole of detector diode U1 connects the microwave detection signal, ground connection after cathode series resistance R4, and capacitor C 3 is in parallel with resistance R 4.After the inverting input resistance in series R5 of comparer A2, with the positive pole of detector diode U1, be connected, ground connection after connection nominal voltage signal V2 resistance in series R7 after its in-phase input end resistance in series R6, its output end signal is power detection Tout2 as a result, is connected to the Programmadle logic device.
The principle of power detection is when the microwave detection signal is converted to voltage signal after detector diode U1, then through bleeder circuit, the voltage and the nominal voltage V2 that branch away to be compared.If the voltage obtained is higher than V2, Tout2 is high level; If the voltage obtained is lower than V2, Tout2 is low level.
Fig. 4 shows the schematic diagram of temperature sensing circuit and Programmadle logic device.As shown in Figure 4, temperature sensing circuit comprises temperature sensor, only need on temperature sensor, define temperature accuracy, finally by the temperature detection result of temperature sensor output and current detecting, Tout1, power detection as a result together with Tout2, reach the Programmadle logic device and get final product as a result.Current detecting as a result Tout1, power detection as a result Tout2 and temperature sensing result export DATAOUT after the Programmadle logic device, Output rusults has just comprised three kinds of self check information like this.Can feed back in time duty and the stable case of microwave system by the self check of these indexs, relatively monitor is to the trouble spot of system.
Above-described is only preferred implementation of the present utility model, and the utility model is not limited to above embodiment.Be appreciated that other improvement and variation that those skilled in the art directly derive or associate under the prerequisite that does not break away from basic conception of the present utility model, within all should thinking and being included in protection domain of the present utility model.

Claims (4)

1. the various self-checking circuit of microwave system, is characterized in that, comprises current detection circuit, power-sensing circuit, temperature sensing circuit and Programmadle logic device; The input end of described Programmadle logic device connects respectively the output signal of current detection circuit, power-sensing circuit, temperature sensing circuit, and the output terminal of described Programmadle logic device forms the output signal of the various self-checking circuit of microwave system.
2. the various self-checking circuit of microwave system according to claim 1, is characterized in that, described current detection circuit comprises sample resistance, the first resistance, the second resistance, the 3rd resistance, the first electric capacity, the second electric capacity and the first comparer; Described the first resistance is connected between power supply and load, and described sample resistance is in parallel with the first resistance, the sample resistance ground connection after the second resistance, the 3rd resistance of connecting; The in-phase input end of described the first comparer is connected between the second resistance, the 3rd resistance, and inverting input connects reference voltage signal, and output terminal connects the Programmadle logic device; Described the first electric capacity and the second Capacitance parallel connection are between VDD-to-VSS.
3. the various self-checking circuit of microwave system according to claim 1, is characterized in that, described power-sensing circuit comprises detector diode, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 3rd electric capacity and the second comparer; The negative pole of described detector diode connects the microwave detection signal, ground connection after anodal series connection the 4th resistance; Described the 3rd electric capacity is in parallel with the 4th resistance; Be connected with the positive pole of detector diode after inverting input series connection the 5th resistance of described the second comparer, after in-phase input end series connection the 6th resistance, connect the nominal voltage signal, and ground connection after the 7th resistance of connecting, output terminal connects the Programmadle logic device.
4. the various self-checking circuit of microwave system according to claim 1, is characterized in that, described temperature sensing circuit comprises temperature sensor, and the output terminal of described temperature sensor connects the Programmadle logic device.
CN2013203887287U 2013-06-28 2013-06-28 Microwave-system diverse self-checking circuit Active CN203324355U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108028769A (en) * 2016-05-23 2018-05-11 深圳市赛亿科技开发有限公司 Breakdown maintenance method and system
CN110031808A (en) * 2019-04-10 2019-07-19 扬州海科电子科技有限公司 A kind of Microwave Power Module self-checking system of line closed loop verifying

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108028769A (en) * 2016-05-23 2018-05-11 深圳市赛亿科技开发有限公司 Breakdown maintenance method and system
CN110031808A (en) * 2019-04-10 2019-07-19 扬州海科电子科技有限公司 A kind of Microwave Power Module self-checking system of line closed loop verifying

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