CN204269816U - A kind of integrated signal source for Fault Diagnosis of Radar - Google Patents
A kind of integrated signal source for Fault Diagnosis of Radar Download PDFInfo
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- CN204269816U CN204269816U CN201420688217.1U CN201420688217U CN204269816U CN 204269816 U CN204269816 U CN 204269816U CN 201420688217 U CN201420688217 U CN 201420688217U CN 204269816 U CN204269816 U CN 204269816U
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Abstract
The utility model discloses a kind of integrated signal source for Fault Diagnosis of Radar, comprise connected vibration source circuit and buffer circuit and be connected with buffer circuit synchronizing pulse produces passage, echo-pulse produces passage and at least 1 time delay widened pulse produces passage; Described synchronizing pulse produces passage and comprises the tune stretch circuit and output circuit that are connected in turn; Each time delay widened pulse produces passage and comprises the delay circuit, tune stretch circuit and the output module that are connected in turn; Echo-pulse produces passage and comprises delay circuit connected in turn, adjusts stretch circuit, state selecting circuit and output circuit, and is connected to the stretch circuit that is out of steps adjusting stretch circuit to form by tune stretch circuit and many gears between buffer circuit and state selecting circuit.The utility model can produce numerous signals of sequential relationship complexity needed for radar circuit plate level fault diagnosis, and signal form both can be continuous signal, can be again the discontinuous signal that continuous number and interrupt number can set, meet the actual demand of Fault Diagnosis of Radar.
Description
Technical field
The present invention relates to Fault Diagnosis of Radar technical field, a kind of Fault Diagnosis of Radar integrated signal source is mainly provided.
Background technology
When radar fault location is with diagnosis, need to provide specific pumping signal to radar to be detected or its extension set parts, to detect radar or the working condition of its extension set parts under this excitation.When the fault diagnosis of circuit board level, pumping signal, except echoed signal, also may comprise numerous gate signals relevant in sequential that upper level circuit exports, as range gate, clutter door, block wave door etc.General purpose radar signal source generally lays particular emphasis on the generation of echoed signal, output channel negligible amounts, does not possess the ability simultaneously exporting numerous gate signal, is difficult to the needs meeting circuit board level fault diagnosis.In the real work of fault diagnosis, often need several signal sources to connect into complicated synchronous, trigger relation collaborative work and could produce specific signal combination, system is comparatively complicated, and cost is higher.
Summary of the invention
In view of this, the invention provides a kind of integrated signal source for Fault Diagnosis of Radar, numerous signals of sequential relationship complexity needed for radar circuit plate level fault diagnosis can be produced, the signal form produced both can be continuous signal, can be again the discontinuous signal that continuous number and interrupt number can set, meet the actual demand of Fault Diagnosis of Radar.
The described integrated signal source for Fault Diagnosis of Radar, comprising:
For generation of the vibration source circuit of reference square wave signal;
For improving the buffer circuit of described reference square wave signal driving force;
For at least 3 the pulses generation passages utilizing the reference square wave signal after driving to produce pulse signal source;
Described pulses generation passage comprises synchronizing pulse and produces passage, time delay widened pulse generation passage and echo-pulse generation passage; According to required different pulse signal sources relative to the time delay of synchronizing pulse and respective pulsewidth, time delay widened pulse produces passage at least 1;
Described synchronizing pulse produces passage and comprises the first tune stretch circuit and the first output circuit be connected in turn; Each time delay widened pulse produces passage and comprises the first delay circuit, the second tune stretch circuit and the second output circuit that are connected in turn; Echo-pulse produces passage and comprises the second delay circuit, the 3rd be connected in turn and adjust stretch circuit, state selecting circuit and the 3rd output circuit, and is connected to the 4th between buffer circuit and state selecting circuit and adjusts stretch circuit and many gears to adjust stretch circuit;
First delay circuit, the second delay circuit all for needing the pulse signal source produced relative to the sequential relationship of synchronizing pulse according to place passage, carry out time delay to reference square wave signal after the driving of input;
First adjusts stretch circuit, second to adjust stretch circuit, the 3rd to adjust stretch circuit all for the pulsewidth of the pulse signal source according to required output, regulates the pulsewidth of input signal;
4th adjusts stretch circuit to be used for regulating according to the group pulse echoed signal of required output the pulsewidth of input signal, and the pulsewidth after adjustment is identical with the first recurrent interval between the two adjacent groups echo-pulse of required generation;
Many gears adjust stretch circuit to be used for regulating according to set position adjusting with the 4th the signal dutyfactor that the pulsewidth of stretch circuit output signal is the cycle, produce the select gate signal of echo-pulse;
State selecting circuit for selecting the 3rd continuous impulse adjusting stretch circuit to export to the 3rd output circuit, or selects the select gate signal of described echo-pulse to export the 3rd output circuit to the group pulse of continuous echo-pulse phase and formation;
Described first output circuit, the second output circuit and the 3rd output circuit are all for improving the load capacity of input signal.
Beneficial effect:
The present invention can produce numerous signals of sequential relationship complexity needed for radar circuit plate level fault diagnosis, the signal form produced both can be continuous signal, can be again the discontinuous signal that continuous number and interrupt number can set, meet the actual demand of Fault Diagnosis of Radar.And the present invention adopts modular design method, design have employed that structure is simple, functional independence, use basic circuit module flexibly, can be realized the generation of numerous signals of sequential relationship complexity by the change of the syntagmatic between the adjustment of inside modules parameter, module.
Accompanying drawing explanation
Fig. 1 is the composition schematic diagram in integrated signal source of the present invention.
Fig. 2 is each signal waveform and mutual sequential relationship schematic diagram in the integrated signal that produces of the present invention.
Fig. 3 is vibration source circuit theory diagrams.
Fig. 4 is buffer circuit schematic diagram.
Fig. 5 is delay circuit schematic diagram.
Fig. 6 adjusts stretch circuit schematic diagram.
Fig. 7 (a) and Fig. 7 (b) is output circuit schematic diagram.
Fig. 8 is that the many gears of select gate adjust stretch circuit schematic diagram.
Fig. 9 is state selecting circuit schematic diagram.
Embodiment
To develop simultaneously embodiment below in conjunction with accompanying drawing, describe the present invention.
The utility model adopts modular design method, devise that structure is simple, functional independence, use basic circuit module flexibly, by the adjustment of inside modules parameter, the change of the syntagmatic between module can realize the generation of numerous signals of sequential relationship complexity.
Basic circuit module can be divided into the wide and output circuit of vibration source, buffering, time delay, tune by function.The function of vibration source circuit produces reference square wave signal, and the pulse signal with synchronized relation can share a vibration source circuit; The function of buffer circuit improves the driving force of the reference square wave signal that vibration source circuit exports; The function of delay circuit be to buffering after reference square wave signal carry out time delay, in order to regulate the sequential relationship between each pulse signal; The function of stretch circuit is adjusted to be regulate with the pulsewidth inputting the output signal that trigger pip is starting point; The function of output circuit improves the load capacity of signal, the output of settling signal.
Above-mentioned basic circuit module produces new functional module through suitably changing, and comprising: increase on tune stretch circuit after adjusting wide region segmentation selection function and become many gears tune stretch circuit, buffer module increases and becomes state selecting circuit to after the selector switch of input signal, stretch circuit is adjusted mutually to connect tune stretch circuit and many gears, the ripple gate-width that the ripple door making prime adjust stretch circuit to produce produces than rear class many gear tune stretch circuit, and the trigger pip of forward position as rear class of ripple door is produced by prime, then can be formed the signal period by prime adjust stretch circuit control, the asynchronous signal that dutycycle adjusts stretch circuit to control by the many gears of rear class adjusts stretch circuit group, this tune stretch circuit group by with pulse with, thus can realize exporting pulse in high level window, pulse is not exported in low level window, namely the output of the intermittent pulse signal that continuous number and interrupt number can set is achieved, be called group pulse.
The integrated signal source that the present invention is used for Fault Diagnosis of Radar adopts basic circuit module to build, by the feature decomposition of Fault Diagnosis of Radar desired signal to modules, reduce design difficulty, Fault Diagnosis of Radar desired signal can be realized according to more unified pattern.As synchronizing pulse can wide by vibration source, buffering, tune, export level Four module-cascade and produce; Range gate, clutter door, block wave door, differentiate ripple door, division ripple door etc. there is synchronized relation but time delay and the different signal of width signal all can wide by vibration source, buffering, time delay, tune, export Pyatyi module-cascade and produce.
In addition, may need the echo pulse signal of continuous impulse and group pulse two kinds of different conditions in Fault Diagnosis of Radar, under continuous impulse state, the echo of generation is continual, belong to synchronizing signal, in each synchronizing cycle, have an echo-pulse to produce; Under group pulse state, the echo of generation is regular discontinuous signal, and the continuous and discontinuous number of pulse can set, and belongs to the nonsynchronous signal having specific rule.For this reason, the wide module that is out of steps can be adopted to realize this function, after stretch circuit group that continuous echo pulse signal input is out of steps, by the cycle of the prime regulation output signal of this circuit group, the dutycycle of rear class regulation output signal.Output signal and the continuous echo pulse signal of this circuit group are received on state selecting circuit respectively, select module whether to carry out AND operation to two input signals by state of a control, determine that condition selecting module exports continuous echo pulse signal or exports group pulse echoed signal.When continuous echo pulse signal carries out AND operation with the output signal of the stretch circuit group that is out of steps, what state selecting circuit exported is group pulse echoed signal, the width of group pulse signal is arranged by the prime of the stretch circuit group that is out of steps, the number of echo-pulse is arranged by the rear class of the wide module that is out of steps continuously in group pulse width, therefore the echoed signal with continuous impulse and group pulse two states, condition selecting, output circuit wide by vibration source, buffering, time delay, tune can combine and produce.
Fig. 1 is the integrated signal source that the embodiment of the present invention adopts foregoing circuit CMOS macro cell synchronization pulse, range pulse, noise pulse, disabling pulse, echo-pulse totally five kinds of pulse signals, and Fig. 2 shows the mutual relationship of the required signal source produced.See Fig. 2, this integrated signal source comprises vibration source circuit, buffer circuit, tune stretch circuit 1 ~ 6, delay circuit 1 ~ 4, output circuit 1 ~ 5, many gears tune stretch circuit and state selecting circuit.
The output of vibration source circuit connects the input of buffer circuit, and the output of buffer circuit connects the input of adjusting stretch circuit 1, delay circuit 1 ~ 4, adjusting stretch circuit 6 respectively.Adjust stretch circuit 1 mutually to connect with output circuit 1, composition synchronizing pulse produces passage, and the output of output circuit 1 is synchronization pulse.Delay circuit 1 is connected successively with tune stretch circuit 2, output circuit 2, and form the first time delay widened pulse and produce passage, the output signal of output circuit 2 is range pulse signal.Delay circuit 2 is connected successively with tune stretch circuit 3, output circuit 3, and form the second time delay widened pulse and produce passage, the output signal of output circuit 3 is range pulse signal.Delay circuit 3 is connected mutually with tune stretch circuit 4, output circuit 4 successively, and composition the 3rd time delay widened pulse produces passage, and the output signal of output circuit 4 is noise pulse signal.Delay circuit 4 is connected successively with tune stretch circuit 5, state selecting circuit, output circuit 5, stretch circuit 6 and many gears is adjusted to adjust stretch circuit to be composed in series the stretch circuit that is out of steps, its output is linked into state selecting circuit, they jointly form echo-pulse and produce passage, and the output of output circuit 5 is echo pulse signal.
Wherein, delay circuit 1 ~ 4, all for needing the pulse signal source produced relative to the sequential relationship of synchronizing pulse according to place passage, carries out time delay to reference square wave signal after the driving of input.
Adjust stretch circuit 1 ~ 5, all for the pulsewidth of the pulse signal source according to required output, the pulsewidth of input signal is regulated.
Adjust stretch circuit 6, for regulating the pulsewidth of input signal according to the group pulse echoed signal of required output, the pulsewidth after adjustment is identical with the first recurrent interval between the two adjacent groups echo-pulse of required generation.
Many gears adjust stretch circuit to be used for regulating according to set position the signal dutyfactor being the cycle with the pulsewidth adjusting stretch circuit 6 to output signal, and produce the select gate signal of echo-pulse.
State selecting circuit for selecting the continuous echo-pulse adjusting stretch circuit 5 to export to output circuit 5, or selects the select gate signal of described echo-pulse to export output circuit 5 to the group pulse of continuous echo-pulse phase and formation.
The implementation of modules is:
(1) vibration source circuit
As shown in Figure 3, vibration source circuit is made up of time base circuit IC1, inverter ic 2, resistance R1, electric capacity C1, electric capacity C2, potentiometer RP1.Time base circuit IC1 can adopt NE555 chip.Power supply VCC1 (5V) is connected with reset terminal (4 pin), the power end of inverter ic 2, the first end of potentiometer RP1 with the power end (8 pin) of time base circuit IC1 respectively; The discharge end (7 pin) of time base circuit IC1 is connected with the first end of second end of potentiometer RP1 and sliding end, resistance R1 respectively; The high-triggering end (2 pin) of time base circuit IC1 is connected with the low triggering end (6 pin) of time base circuit IC1, second end of resistance R1, the first end of electric capacity C1 respectively; The ground of power supply VCC1 is connected with the earth terminal (1 pin) of time base circuit IC1, the earth terminal of inverter ic 2, second end of electric capacity C1, the first end of electric capacity C2 respectively; Potentiometer RP1, resistance R1 and electric capacity C1 are cascaded mutually; The power control terminal (5 pin) of time base circuit IC1 is connected with second end of electric capacity C2; The output terminal (3 pin) of time base circuit IC1 is connected with the input end of inverter ic 2, the output terminal output reference square-wave signal of inverter ic 2.
Vibration source module produces cycle T 1 ≌ (RP1+2R1) * C1*ln2, and (T1 unit is second; RP1 unit is ohm; C1 unit is F) reference square wave signal.By the capacitance of selected electric capacity C1, the resistance of resistance R1, and the sliding end position of regulator potentiometer RP1 can the cycle T 1 of fine adjustment reference square wave signal.
(2) buffer circuit
As shown in Figure 4, buffer circuit forms by with door IC3 and resistance R2.Be connected with the first end of resistance R2 with the 1A input end of door IC3, be connected with the 1B input end of door IC3 with the output signal of vibration source circuit, power supply VCC1 is connected with second end of door IC3 power end, resistance R2 respectively; Be output terminal with the 1Y of door IC3, export the reference square wave signal after driving.
Vibration source circuit and buffer circuit are all that follow-up pulses generation passage shares.
(3) delay circuit
The structure of delay circuit 1 ~ 4 is identical.As shown in Figure 5, delay circuit is made up of monostable trigger IC4, potentiometer RP2, electric capacity C3.Monostable trigger IC4 can adopt 74121 chips to realize.The outer meeting resistance capacitance terminal (11 pin) of monostable trigger IC4 is connected with the first end of the first end of potentiometer RP2 and sliding end, electric capacity C3 respectively; The external capacitor end (10 pin) of monostable trigger IC4 is connected with second end of electric capacity C3; The trigger input A1 (3 pin) of monostable trigger IC4 is connected with the ground of power supply VCC1 with trigger input A2 (4 pin) and its earth terminal (7 pin), and second end of potentiometer RP2, the power end (14 pin) of monostable trigger IC4 are connected with VCC1.The input end that the positive trigger input (5 pin) of monostable trigger IC4 is this circuit.The negative pulse output terminal of monostable trigger IC4
the output terminal that (1 pin) is this circuit.
By T2 ≌ k1*C3*RP2, (T2 unit is second to the delay time that delay circuit produces; RP2 unit is ohm; The unit of C3 is F; K1 is constant, and as C3>1000pF, k1 gets 0.7) determine, can fine adjustment delay time by the position of selected electric capacity C3 and regulator potentiometer PR2 sliding end.
(4) stretch circuit is adjusted
Adjust the structure of stretch circuit 1 ~ 6 identical.As shown in Figure 6, stretch circuit is adjusted to be made up of monostable trigger IC4 ', potentiometer RP2 ', electric capacity C3 '.The outer meeting resistance capacitance terminal (11 pin) of monostable trigger IC4 ' is connected with the first end of the first end of potentiometer RP2 ' and sliding end, electric capacity C3 ' respectively; The external capacitor end (10 pin) of monostable trigger IC4 ' is connected with second end of electric capacity C3 '; The trigger input A1 (3 pin) of monostable trigger IC4 ' is connected with the ground of power supply VCC1 with trigger input A2 (4 pin) and its earth terminal (7 pin).Second end of potentiometer RP2 ', the power end (14 pin) of monostable trigger IC4 ' are connected with VCC1.The input end that the positive trigger input (5 pin) of monostable trigger IC4 ' is this circuit.The output terminal of this circuit has two, comprises negative pulse output terminal
(1 pin) and positive pulse output terminal Q (6 pin), can select according to difference.The pulse signal source exported needed for the rear class is positive pulse, then adopt negative pulse output terminal
for the output terminal of this circuit, the pulse signal source exported needed for the rear class is negative pulse, then adopt positive pulse output terminal Q to be the output terminal of this circuit, adjusts stretch circuit, then adopt positive pulse output terminal Q to be the output terminal of this circuit when rear class directly connects many gears.
The tune wide time of adjusting stretch circuit to produce, (T3 unit was second by T3 ≌ k2*C3 ' * RP2 '; RP2 ' unit is ohm; C3 ' >1000, unit is pF; K2 is constant, and as C3 ' >1000pF, k2 gets 0.7) to determine, the position of regulator potentiometer PR2 ' sliding end can the precision regulating wide time.
(5) output circuit
Output circuit 1 ~ 5 is divided into and exports positive pulse and export negative pulse two kinds, according to export pulse positive and negative come one in selected two kinds of output circuits.Such as synchronizing pulse, then select the output circuit that positive pulse exports, for clutter door, block wave door etc., select the output circuit that negative pulse exports.
As shown in Fig. 7 (a), the output circuit exporting positive pulse is made up of triode VT1, triode VT2, resistance R3, resistance R4, resistance R5, resistance R6, potentiometer RP3, electric capacity C4, electric capacity C5; The base stage of triode VT1 is connected with the first end of resistance R3, and second end of resistance R3 is the input end of this circuit; The emitter-base bandgap grading of triode VT1 is by resistance R5 ground connection, and the collector of triode VT1 connects the base stage of triode VT2 by electric capacity C4, meet power supply VCC2 by resistance R4 simultaneously; The base stage of triode VT2 is further by resistance R6 ground connection, the emitter of triode VT2 is by potentiometer RP3 ground connection, the sliding end of potentiometer RP3 connects the first end of electric capacity C5, second end of electric capacity C5 is the output terminal output positive pulse of this circuit, the amplitude of the position-adjustable positive pulse output of regulator potentiometer RP3 sliding end.
As shown in Fig. 7 (b), the output circuit exporting negative pulse is made up of triode VT3, triode VT4, resistance R7, resistance R8, resistance R9, resistance R10, potentiometer RP4, electric capacity C6, electric capacity C7; The base stage of triode VT3 is connected with the first end of resistance R7, and second end of resistance R7 is the input end of this circuit; The emitter of triode VT3 is by resistance R9 ground connection, and the collector of triode VT3 connects the base stage of triode VT4 by electric capacity C6, meet power supply VCC2 by resistance R8 simultaneously; The base stage of triode VT4 meets power supply VCC2 further by resistance R10, the emitter of triode VT4 is by potentiometer RP4 ground connection, the sliding end of potentiometer RP4 connects the first end of electric capacity C7, second end of electric capacity C7 is the output terminal output negative pulse of this circuit, the amplitude of the position-adjustable negative pulse output of regulator potentiometer RP4 sliding end.
(6) many gears adjust stretch circuit
Many gears adjust stretch circuit to be form through suitably changing on the basis of adjusting stretch circuit.Its change mainly contains: potentiometer RP2 is replaced to the many grades of tune stretch circuits be made up of waver W1 and multiple potentiometer RP5 ~ RP15, the position of each sliding end of regulator potentiometer RP5 ~ RP15, accurately can set the width of each gear output signal.Different potentials device can determine the pulsewidth of different stage, thus realizes wider pulse-width regulated.
As shown in Figure 8, many gears adjusts stretch circuit by monostable trigger IC4 ", electric capacity C3 ", waver W1 and multiple potentiometer form; Monostable trigger IC4 " outer meeting resistance capacitance terminal (11 pin) meet waver W1 and by electric capacity C3 " meet monostable trigger IC4 " and external capacitor end (10 pin); Monostable trigger IC4 " trigger input A1 (3 pin) be connected with the ground of power supply VCC1 with trigger input A2 (4 pin) and earth terminal (7 pin); Monostable trigger IC4 " positive trigger input (5 pin) be this circuit input end, monostable trigger IC4 " positive pulse output terminal Q (6 pin) output terminal that is this circuit; The first end of all potentiometers all connects power supply VCC1, and the second end and sliding end are connected to form shelves choosing end, and select for waver W1, different potentials device provides different select gate signal positive pulse width.
(7) state selecting circuit
State selecting circuit forms through suitably changing on the basis of buffer circuit.It changes mainly input and closes the change of fastening: as shown in Figure 9, a single-pole double-throw switch (SPDT) K1 is accessed at the 1A input end with door IC3 ', the first end of a stationary contact connecting resistance R2 ' of K switch 1, another stationary contact of K switch 1 connects the output signal of previous module.Input termination with the 1B of door IC3 ' and adjust wide module 5.
The way of output of upper level module by signal can be selected by K switch 1, when K switch 1 puts second end of resistance R2 ', voltage from VCC1 makes to be in noble potential all the time with the 1A input end of door IC3 ', and the signal receiving 1B input end is unrestricted, so exports continuous impulse; When K switch 1 is placed in another one contact, when only having 1A input end to have high level to arrive, the signal of 1B input end could be exported with door IC3 ', otherwise can only output low level with door IC3 ', now 1A input end receives the gate signal of echo-pulse, continuous impulse signal is exported, output low level between low period between the high period of gate signal, thus the output achieving group pulse.
Claims (8)
1., for an integrated signal source for Fault Diagnosis of Radar, it is characterized in that, comprising:
For generation of the vibration source circuit of reference square wave signal;
For improving the buffer circuit of described reference square wave signal driving force;
For at least 3 the pulses generation passages utilizing the reference square wave signal after driving to produce pulse signal source;
Described pulses generation passage comprises synchronizing pulse and produces passage, time delay widened pulse generation passage and echo-pulse generation passage; According to required different pulse signal sources relative to the time delay of synchronizing pulse and respective pulsewidth, time delay widened pulse produces passage at least 1;
Described synchronizing pulse produces passage and comprises the first tune stretch circuit and the first output circuit be connected in turn; Each time delay widened pulse produces passage and comprises the first delay circuit, the second tune stretch circuit and the second output circuit that are connected in turn; Echo-pulse produces passage and comprises the second delay circuit, the 3rd be connected in turn and adjust stretch circuit, state selecting circuit and the 3rd output circuit, and is connected to the 4th between buffer circuit and state selecting circuit and adjusts stretch circuit and many gears to adjust stretch circuit;
First delay circuit, the second delay circuit all for needing the pulse signal source produced relative to the sequential relationship of synchronizing pulse according to place passage, carry out time delay to reference square wave signal after the driving of input;
First adjusts stretch circuit, second to adjust stretch circuit, the 3rd to adjust stretch circuit all for the pulsewidth of the pulse signal source according to required output, regulates the pulsewidth of input signal;
4th adjusts stretch circuit to be used for regulating according to the group pulse echoed signal of required output the pulsewidth of input signal, and the pulsewidth after adjustment is identical with the first recurrent interval between the two adjacent groups echo-pulse of required generation;
Many gears adjust stretch circuit to be used for regulating according to set position adjusting with the 4th the signal dutyfactor that the pulsewidth of stretch circuit output signal is the cycle, produce the select gate signal of echo-pulse;
State selecting circuit for selecting the 3rd continuous impulse adjusting stretch circuit to export to the 3rd output circuit, or selects the select gate signal of described echo-pulse to export the 3rd output circuit to the group pulse of continuous echo-pulse phase and formation;
Described first output circuit, the second output circuit and the 3rd output circuit are all for improving the load capacity of input signal.
2. integrated signal source as claimed in claim 1, it is characterized in that, described vibration source circuit is made up of time base circuit IC1, inverter ic 2, resistance R1, electric capacity C1, electric capacity C2 and potentiometer RP1; Power supply VCC1 is connected with the power end of reset terminal, inverter ic 2, the first end of potentiometer RP1 with the power end of time base circuit IC1 respectively; The discharge end of time base circuit IC1 is connected with the first end of second end of potentiometer RP1 and sliding end, resistance R1 respectively; The high-triggering end of time base circuit IC1 is connected with the low triggering end of time base circuit IC1, second end of resistance R1, the first end of electric capacity C1 respectively; The ground of power supply VCC1 is connected with the earth terminal of time base circuit IC1, the earth terminal of inverter ic 2, second end of electric capacity C1, the first end of electric capacity C2 respectively; Potentiometer RP1, resistance R1 and electric capacity C1 are cascaded mutually; The power control terminal of time base circuit IC1 is connected with second end of electric capacity C2; The output terminal of time base circuit IC1 is connected with the input end of inverter ic 2, the output terminal output reference square-wave signal of inverter ic 2; By the capacitance of selected electric capacity C1 and the resistance of resistance R1, and the cycle T 1 of reference square wave signal is determined in the sliding end position of regulator potentiometer RP1.
3. integrated signal source as claimed in claim 1, it is characterized in that, described buffer circuit forms by with door IC3 and resistance R2; Be connected with the first end of resistance R2 with the 1A input end of door IC3, receive with the 1B input end of door IC3 the reference square wave signal that vibration source circuit exports; Power end VCC1 is connected with second end of door IC3 power end, resistance R2 respectively; The reference square wave signal after driving is exported with the 1Y output terminal of door IC3.
4. integrated signal source as claimed in claim 1, it is characterized in that, described first delay circuit is identical with the structure of the second delay circuit, forms by monostable trigger IC4, potentiometer RP2, electric capacity C3; The outer meeting resistance capacitance terminal of monostable trigger IC4 is connected with the first end of the first end of potentiometer RP2 and sliding end, electric capacity C3 respectively; The external capacitor end of monostable trigger IC4 is connected with second end of electric capacity C3; The trigger input A1 of monostable trigger IC4 is connected with the ground of power supply VCC1 with trigger input A2 and earth terminal; Second end of potentiometer RP2, the power end of monostable trigger IC4 are connected with power supply VCC1; The positive trigger input of monostable trigger IC4 is the input end of this circuit, the negative pulse output terminal of monostable trigger IC4
for the output terminal of this circuit; By the capacitance of selected electric capacity C3, and the sliding end position of regulator potentiometer RP2 is to regulate time delay.
5. integrated signal source as claimed in claim 1, is characterized in that, described first adjusts stretch circuit, second to adjust stretch circuit, the 3rd to adjust stretch circuit and the 4th to adjust the structure of stretch circuit identical, forms by monostable trigger IC4, potentiometer RP2, electric capacity C3; The outer meeting resistance capacitance terminal of monostable trigger IC4 is connected with the first end of the first end of potentiometer RP2 and sliding end, electric capacity C3 respectively; Monostable trigger IC4 external capacitor end is connected with electric capacity C3 second end; Monostable trigger IC4 trigger input A1 is connected with the ground of power supply VCC1 with trigger input A2 and earth terminal; Second end of potentiometer RP2 ', the power end of monostable trigger IC4 ' are connected with power supply VCC1; The positive trigger input of monostable trigger IC4 is the input end of this circuit;
The pulse signal source exported needed for the rear class is positive pulse, then adopt negative pulse output terminal
for the output terminal of this circuit; The pulse signal source exported needed for the rear class is negative pulse, then adopt positive pulse output terminal Q to be the output terminal of this circuit; Adjust stretch circuit when rear class directly connects many gears, then adopt positive pulse output terminal Q to be the output terminal of this circuit;
By the capacitance of selected electric capacity C3, and the sliding end position of regulator potentiometer RP2 is to regulate the wide time.
6. integrated signal source as claimed in claim 1, is characterized in that, the first output circuit, the second output circuit, the 3rd output circuit and the 4th output circuit are divided into output positive pulse and export negative pulse two kinds;
The output circuit exporting positive pulse is made up of triode VT1, triode VT2, resistance R3, resistance R4, resistance R5, resistance R6, potentiometer RP3, electric capacity C4, electric capacity C5; The base stage of triode VT1 is connected with the first end of resistance R3, and second end of resistance R3 is the input end of this circuit; The emitter-base bandgap grading of triode VT1 is by resistance R5 ground connection, and the collector of triode VT1 connects the base stage of triode VT2 by electric capacity C4, meet power supply VCC2 by resistance R4 simultaneously; The base stage of triode VT2 is further by resistance R6 ground connection, the emitter of triode VT2 is by potentiometer RP3 ground connection, the sliding end of potentiometer RP3 connects the first end of electric capacity C5, second end of electric capacity C5 is the output terminal output positive pulse of this circuit, the amplitude of the position-adjustable positive pulse output of regulator potentiometer RP3 sliding end;
The output circuit exporting negative pulse is made up of triode VT3, triode VT4, resistance R7, resistance R8, resistance R9, resistance R10, potentiometer RP4, electric capacity C6, electric capacity C7; The base stage of triode VT3 is connected with the first end of resistance R7, and second end of resistance R7 is the input end of this circuit; The emitter of triode VT3 is by resistance R9 ground connection, and the collector of triode VT3 connects the base stage of triode VT4 by electric capacity C8, meet power supply VCC2 by resistance R8 simultaneously; The base stage of triode VT4 meets power supply VCC2 further by resistance R10, the emitter of triode VT4 is by potentiometer RP4 ground connection, the sliding end of potentiometer RP4 connects the first end of electric capacity C7, second end of electric capacity C7 is the output terminal output negative pulse of this circuit, the amplitude of the position-adjustable negative pulse output of regulator potentiometer RP4 sliding end.
7. integrated signal source as claimed in claim 1, it is characterized in that, described state selecting circuit forms by with door IC3 ', resistance R2 ' and single-pole double-throw switch (SPDT) K1; Be connected with the first end of single-pole double-throw switch (SPDT) K1 with the 1A input end of door IC3 ', be connected with the 1B input end of door IC3 ' output that the 3rd adjusts stretch circuit; Power supply VCC1 is connected with the power end of door IC3 ', second end of resistance R2 ' respectively; The first end of resistance R2 ' connects a stationary contact of single-pole double-throw switch (SPDT) K1, and another stationary contact of single-pole double-throw switch (SPDT) K1 connects the output that many gears adjust stretch circuit; The 3rd output circuit of rear class is connected with the 1Y output terminal of door IC3 '.
8. integrated signal source as claimed in claim 1, is characterized in that, described many gears adjust stretch circuit by monostable trigger IC4 ", electric capacity C3 ", waver W1 and multiple potentiometer form; Monostable trigger IC4 " outer meeting resistance electric capacity termination waver W1 and by electric capacity C3 " meet monostable trigger IC4 " and external capacitor end; Monostable trigger IC4 " trigger input A1 be connected with the ground of power supply VCC1 with trigger input A2 and earth terminal; Monostable trigger IC4 " positive trigger input be the input end of this circuit, the negative positive pulse output terminal of monostable trigger IC4
for the output terminal of this circuit; The first end of all potentiometers all connects power supply VCC1, and the second end and sliding end are connected to form shelves choosing end, select for waver W1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420688217.1U CN204269816U (en) | 2014-11-14 | 2014-11-14 | A kind of integrated signal source for Fault Diagnosis of Radar |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106779066A (en) * | 2016-12-02 | 2017-05-31 | 上海无线电设备研究所 | A kind of radar circuit plate method for diagnosing faults |
| CN109477890A (en) * | 2016-08-05 | 2019-03-15 | 德克萨斯仪器股份有限公司 | Fault detection in radar system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477890A (en) * | 2016-08-05 | 2019-03-15 | 德克萨斯仪器股份有限公司 | Fault detection in radar system |
| CN109477890B (en) * | 2016-08-05 | 2023-08-08 | 德克萨斯仪器股份有限公司 | Fault detection in radar systems |
| CN106779066A (en) * | 2016-12-02 | 2017-05-31 | 上海无线电设备研究所 | A kind of radar circuit plate method for diagnosing faults |
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