CN201226026Y - Anti-collision instrument for ranging laser - Google Patents
Anti-collision instrument for ranging laser Download PDFInfo
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- CN201226026Y CN201226026Y CNU2008200661790U CN200820066179U CN201226026Y CN 201226026 Y CN201226026 Y CN 201226026Y CN U2008200661790 U CNU2008200661790 U CN U2008200661790U CN 200820066179 U CN200820066179 U CN 200820066179U CN 201226026 Y CN201226026 Y CN 201226026Y
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Abstract
The utility model provides a laser distance detection anti-collision instrument which includes an anti-collision control box, a transducing unit and a laser distance detection module; the transducing unit and the laser distance detection module form a laser distance detection transducer; and the laser distance detection transducer is connected with the anti-collision control box. The anti-collision instrument has a strong real time performance, is high in precision, is good in reliability and is more conveniently used.
Description
Technical field
The utility model belongs to collision avoidance system, particularly relates to a kind of laser anti-collision instrument.
Background technology
In the Industry Control, the protecting against collision of driving vehicles device is the visual plant that the safe operation of driving is provided protection.The principal feature of the protecting against collision of driving vehicles device that comes into operation both at home and abroad at present is: 1) most protecting against collision of driving vehicles instrument employing optoelectronic switches or travel switch are as the signal generation unit of Anti-bumping protection, and alarm distance is set complicated and certain error is arranged.2) part protecting against collision of driving vehicles instrument uses infrared electronic technology, be distance measurements to be converted to certain analog quantity and it is detected, this class protecting against collision of driving vehicles instrument adopts the noncontact mode to realize distance detection, can avoid because of the long-term error of bringing of using, but adopt simulated mode adjustment warning limiting distance usually, often need artificial school zero, the technical maintenance workload is big, and is subject to the influence of environment (as environment temperature, air quality etc.).
Summary of the invention
Technical problem to be solved in the utility model is: provide a kind of laser ranging crashproof instrument, the crashproof instrument of this laser ranging uses the laser signal conditioning unit of development voluntarily, cooperate Laser emission driver element and conditioned signal processing unit to constitute the laser ranging module, realize laser ranging function; The laser ranging module constitutes the laser ranging transmitter with transducing unit and links to each other with crashproof control enclosure; Total system is real-time, the precision height, and good reliability is used more convenient.
The technical scheme that the utility model adopted is: also comprise transducing unit and laser ranging module, transducing unit and laser ranging module are formed the laser ranging transmitter, and the laser ranging transmitter links to each other with crashproof control enclosure.
The utlity model has following advantage:
1, detect in real time and show the driving and left and right sides barrier between distance, distinctive laser ranging technique can guarantee that testing result has very high precision and reliability;
2, can start sound and light alarm or the action of triggering pilot relay, to realize the function of protection driving, early warning distance and braking distance can be by the button settings.When driving and the distance of left and right sides barrier during less than the braking distance that is provided with, pilot relay direct action, with service brake, hummer sends continuous sound, and the red alarm lamp is bright simultaneously; When driving and the distance of left and right sides barrier greater than the braking distance that is provided with, and during less than early warning distance, pilot relay is failure to actuate, hummer sends continuous sound, the yellow alarm lamp is bright simultaneously; When driving and the distance of left and right sides barrier during greater than the early warning distance that is provided with, pilot relay is failure to actuate, and hummer does not send sound, and the pilot lamp green light is bright simultaneously;
3, the last LED display module of secondary instrument (crashproof control enclosure) can show left and right sides barrier and running distance and both the highest relative velocities in real time, and being equipped with keyboard can be provided with parameters;
Description of drawings
Fig. 1 is a structured flowchart of the present utility model.
Fig. 2 is the structured flowchart of laser ranging module among Fig. 1.
Fig. 3 is a laser signal conditioning element circuit schematic diagram in the laser ranging module among Fig. 2.
Fig. 4 is Laser emission driver element circuit theory diagrams in the laser ranging module among Fig. 2.
Fig. 5 is conditioned signal processing unit circuit theory diagrams in the laser ranging module among Fig. 2.
Embodiment
As shown in Figure 1, the crashproof instrument of this laser ranging comprises crashproof control enclosure, transducing unit and laser ranging module, and transducing unit and laser ranging module are formed the laser ranging transmitter, and the laser ranging transmitter links to each other with crashproof control enclosure.In actual the use, the laser ranging transmitter can comprise left side laser ranging transmitter and the right side laser ranging transmitter that structure is identical, with the range finding requirement of convenient driving both sides.
As shown in Figure 2, the laser ranging module comprises Laser emission driver element, laser signal conditioning unit and conditioned signal processing unit, the Laser emission driver element links to each other with laser signal conditioning unit, and the output terminal of laser signal conditioning unit links to each other with the input end of conditioned signal processing unit.
As shown in Figure 3, laser signal conditioning unit can comprise prime amplifier, bandpass filter and phase-sensitive detector (PSD), the output terminal of prime amplifier is connected to the input end of bandpass filter, and the output terminal of bandpass filter is connected to phase-sensitive detector (PSD), and the output terminal of phase-sensitive detector (PSD) is connected to transducing unit.
Prime amplifier comprises photodiode PD, passive filtering network and first operational amplification circuit, photodiode PD links to each other with first operational amplification circuit by the passive filtering network, first operational amplification circuit comprises the first operational amplifier U1, and is connected to the first terminal A1.The function of prime amplifier is directly the faint current signal of photodiode PD internal poles to be adjusted to the voltage signal that can be handled by late-class circuit.Wherein the first operational amplifier U1 can adopt the NE5534 chip.The peripheral circuit of prime amplifier comprise 1 photodiode, 14 resistance, 7 electric capacity, 2 triodes (each 1 of NPN type and positive-negative-positive) ,+the 9V power supply forms.
The annexation of each parts of this preamplifier circuit is: photodiode PD is in parallel with resistance R 0, again with resistance R 1, R2, R3, capacitor C 1, the passive filter network that C2 forms connects, the passive filter network again with by resistance R 4, R5, R6, R7, R8, R9, capacitor C 3, triode Q1, the circuit that Q2 forms links to each other, and then with by the first operational amplifier U1, resistance R 10, R11, R12, R13, capacitor C 4, C5, the in-phase amplification circuit that C6 forms continuous (first operational amplification circuit), the 2nd pin of the first operational amplifier U1 and resistance R 11, R12 links to each other, the 3rd pin of the first operational amplifier U1 and capacitor C 4, resistance R 10 links to each other, the 6th pin of the first operational amplifier U1 and resistance R 13, capacitor C 7 links to each other, the 7th pin of the first operational amplifier U1 and the 4th pin respectively and+the 9V power supply, ground links to each other, the 5th pin of the first operational amplifier U1 and resistance R 13, capacitor C 6 links to each other, and signal outputs to next stage by the first terminal A1.
This bandpass filter operational amplifier comprises second operational amplification circuit, and second operational amplification circuit comprises the second operational amplifier U2 by the input of the first terminal A1 acknowledge(ment) signal.The function of bandpass filter is that the undesired signal of the high and low frequency that will contain in the prime signal is carried out filtering.Wherein the second operational amplifier U2 can adopt the NE5534 chip.Peripheral circuit comprises 5 resistance and 4 electric capacity.The annexation of each parts of this band pass filter circuit: the signal of previous stage is imported from the first terminal A1, the first terminal A1 links to each other with resistance R 14, R15, and then link to each other with capacitor C 8, C9, the other end of capacitor C 8 links to each other with the 2nd pin of resistance R 17 with the second operational amplifier U2, the other end of capacitor C 9 links to each other with the 6th pin of the second operational amplifier U2, capacitor C 11 1 ends link to each other with the 6th pin of the second operational amplifier U2, and the other end links to each other with the next stage circuit.
Phase-sensitive detector (PSD) comprises isolated gate FET T1 and the 3rd operational amplification circuit, and the 3rd operational amplification circuit comprises the 3rd operational amplifier U3, constitutes integrating circuit.The drain and gate of isolated gate FET T1 links to each other with modulation signal input end A2, and the source electrode of isolated gate FET T1 all links to each other with the output terminal of bandpass filter, the 3rd operational amplification circuit, and the 3rd operational amplification circuit is connected to signal output terminal A3.Its function is to utilize by the modulation signal of modulation signal input end A2 input the signal of previous stage is carried out phase sensitive detection.Wherein the 3rd operational amplifier U3 can adopt the NE5534 chip.Its peripheral circuit comprises 9 resistance, 4 electric capacity and 1 isolated gate FET.The annexation of each parts of this phase-sensitive detector (PSD) circuit: modulation signal is by isolated gate FET T1 place in circuit, the source class of isolated gate FET T1 links to each other with resistance R 19, be connected with resistance R 20 between the source electrode of isolated gate FET T1 and grid, the other end of resistance R 19 links to each other with the 3rd pin of capacitor C 12 with the 3rd operational amplifier U3, and resistance R 21, R22, R23, R27, capacitor C 15 constitute integrating circuit (the 3rd operational amplification circuit) with the 3rd operational amplifier U3.
As shown in Figure 4, the Laser emission driver element comprises laser diode LD I and laser diode driver circuit.Laser diode driver circuit comprises four-operational amplifier U4 and the 5th operational amplifier U5, and laser diode LD I links to each other with laser diode driver circuit.Concrete annexation is: the 3rd pin of four-operational amplifier U4 links to each other with the 2nd pin of laser diode LD I, the 3rd pin of four-operational amplifier U4 links to each other with the 1st pin of this operational amplifier, the 1st pin of four-operational amplifier U4 links to each other with the 6th pin of the 5th operational amplifier U5 by resistance R 45, the 5th pin of the 5th operational amplifier U5 with by resistance R 42, R43, R44, voltage stabilizing diode D4, the voltage stabilizing network that capacitor C 22 is formed links to each other, the 7th pin of the 5th operational amplifier U5 links to each other with the base stage of triode Q4 by resistance R 48, the collector of triode Q4 links to each other with the 3rd pin of laser diode LD I by resistance R 50, and the 1st pin of laser diode LD I links to each other with power supply+VCC.
As shown in Figure 5, the conditioned signal processing unit comprises time figure conversion chip U6, crystal oscillating circuit and interface circuit, and time figure conversion chip U6 all links to each other with crystal oscillating circuit, interface circuit.Time figure conversion chip U6 can select the TDC-GP2 chip of the general TDC family chip of ACAM company for use.Crystal oscillating circuit comprises crystal oscillator Y4, resistance R 52, R53, capacitor C 26, C27.Interface circuit comprises splicing ear START, STOP, En_Start, En_Stop, INTN, SSN, SCK, SI, SO, RSTN and ClkIn.The concrete annexation of conditioned signal processing unit is: the 1st pin of crystal oscillating circuit links to each other with the 1st pin of digital conversion chip U6, the 2nd pin of crystal oscillating circuit links to each other with the 2nd pin of digital conversion chip U6 by resistance R 53, link to each other by resistance R 52 between the 1st pin of crystal oscillating circuit and the 2nd pin, the end of splicing ear START, STOP, En_Start, En_Stop, INTN, SSN, SCK, SI, SO, RSTN and ClkIn links to each other with the 31st, 30,32,26,8,9,10,11,12,16 pin of time figure conversion chip U6 respectively.In addition, the other end of splicing ear START, STOP respectively with Fig. 3 in modulation signal input end A2, Fig. 4 in signal output terminal A3 link to each other, the other end of splicing ear En_Start, En_Stop, INTN, SSN, SCK, SI, SO, RSTN, ClkIn all links to each other with range finding microcontroller in the transducing unit.The 3rd, 14,22,29 pin of time figure conversion chip U6 all link to each other with power supply+VCC, and the 4th, 7,17,18,19,20,21,23,24,25,27,28 pin all link to each other with power supply GND.
Transducing unit comprises that power module, range finding microprocessor and change send communication module, and the output terminal of range finding microprocessor and laser ranging module links to each other, and the microprocessor of finding range send communication module to link to each other with crashproof control enclosure by change.Power module all links to each other with range finding microprocessor, laser ranging module, for they provide electric power.
As shown in Figure 1, crashproof control enclosure comprises crashproof microprocessor, keyboard is set, light-emitting diode display, audible-visual annunciator, pilot relay, detection of power loss module and crashproof communication module (can use the MAX485 chip), crashproof microprocessor with keyboard, light-emitting diode display, audible-visual annunciator, pilot relay, detection of power loss module, crashproof communication module be set all link to each other, crashproof communication module links to each other with the laser ranging transmitter.Crashproof microprocessor can adopt the AVR Series chip.Also can be equipped with in the sheet storer of can online electricity wiping with electronically written (E2PROM) in the described crashproof microprocessor.
The principle of work of the crashproof instrument of this laser ranging is: at first Laser emission driver element in the left and right sides drives its laser diode LD I emission pulse laser signal respectively, this signal is received by the photodiode PD in the laser signal conditioning unit by barrier reflection back, laser signal conditioning unit becomes the treatable electric impulse signal of conditioned signal processing unit with this signal condition, the conditioned signal processing unit obtains distance value after with this signal Processing and is transferred to range finding microcontroller in the transducing unit that is attached thereto, send communication module (can use the MAX485 chip) to be sent to crashproof control enclosure (secondary instrument) by change again, detect data and handle, be shown in again on the crashproof control enclosure through corresponding calculated.Reach early warning or the braking distance that is provided with by the user in advance if detect distance, corresponding action will be made by system.Crashproof control enclosure is by receiving the output signal from transmitter, and undertaken exporting control signal respectively to light-emitting diode display and relay action unit after intelligent data handles by the microprocessor in the crashproof control enclosure (secondary instrument).
This example adopts laser ranging technique, distance by left side laser ranging transmitter and driving of right side laser ranging transmitters sense and left and right sides barrier, show real-time spacing through light-emitting diode display again, compare with traditional protecting against collision of driving vehicles system, this example can improve the stability of driving work by improving the precision and the reliability that detect distance greatly.Therefore, laser ranging collision avoidance system will progressively replace traditional protecting against collision of driving vehicles system.
Embodiment:
As shown in Figure 1, the crashproof instrument of this laser ranging comprises crashproof control enclosure, transducing unit and laser ranging module, and transducing unit and laser ranging module are formed the laser ranging transmitter, and the laser ranging transmitter links to each other with crashproof control enclosure.The laser ranging transmitter comprises two duplicate left side laser ranging transmitters and right side laser ranging transmitter.
As shown in Figure 2, the laser ranging module comprises Laser emission driver element, laser signal conditioning unit and conditioned signal processing unit, the Laser emission driver element links to each other with laser signal conditioning unit, and the output terminal of laser signal conditioning unit links to each other with the input end of conditioned signal processing unit.
As shown in Figure 3, laser signal conditioning unit comprises prime amplifier, bandpass filter and phase-sensitive detector (PSD), the output terminal of prime amplifier is connected to the input end of bandpass filter, and the output terminal of bandpass filter is connected to phase-sensitive detector (PSD), and the output terminal of phase-sensitive detector (PSD) is connected to transducing unit.
Prime amplifier comprises photodiode PD, passive filtering network and first operational amplification circuit, photodiode PD links to each other with first operational amplification circuit by the passive filtering network, first operational amplification circuit comprises the first operational amplifier U1, and is connected to the first terminal A1.Wherein the first operational amplifier U1 adopts the NE5534 chip.The annexation of each parts of this preamplifier circuit is: photodiode PD is in parallel with resistance R 0, again with R1, R2, R3, C1, the passive filter network that C2 forms connects, the passive filter network again with by R4, R5, R6, R7, R8, R9, C3, Q1, the circuit that Q2 forms links to each other, and then with by the first operational amplifier U1, R10, R11, R12, R13, C4, C5, the in-phase amplification circuit that C6 forms continuous (first operational amplification circuit), the 2nd pin and the R11 of the first operational amplifier U1, R12 links to each other, the 3rd pin and the C4 of the first operational amplifier U1, R10 links to each other, the 6th pin and the R13 of the first operational amplifier U1, C7 links to each other, the 7th pin of the first operational amplifier U1 and the 4th pin respectively and+the 9V power supply, ground links to each other, the 5th pin and the R13 of the first operational amplifier U1, C6 links to each other, and signal outputs to next stage by the first terminal A1.
This bandpass filter operational amplifier comprises second operational amplification circuit, and second operational amplification circuit is imported by the first terminal A1 acknowledge(ment) signal.Second operational amplification circuit comprises the second operational amplifier U2, can adopt the NE5534 chip.The annexation of each parts of this band pass filter circuit: the signal of previous stage is imported from the first terminal A1, the first terminal A1 links to each other with R14, R15, and then link to each other with C8, C9, the other end of C8 links to each other with the 2nd pin of the second operational amplifier U2 with R17, the other end of C9 links to each other with the 6th pin of the second operational amplifier U2, C11 one end links to each other with the 6th pin of the second operational amplifier U2, and the other end links to each other with the next stage circuit.
Phase-sensitive detector (PSD) comprises isolated gate FET T1 and the 3rd operational amplification circuit, and the 3rd operational amplification circuit comprises the 3rd operational amplifier U3, constitutes integrating circuit.The drain and gate of isolated gate FET T1 links to each other with modulation signal input end A2, and the source electrode of isolated gate FET T1 all links to each other with the output terminal of bandpass filter, the 3rd operational amplification circuit, and the 3rd operational amplification circuit is connected to signal output terminal A3.Wherein the 3rd operational amplifier U3 can adopt the NE5534 chip.The annexation of each parts of this phase-sensitive detector (PSD) circuit: modulation signal is by isolated gate FET T1 place in circuit, the source class of isolated gate FET T1 links to each other with R19, be connected with resistance R 20 between the source electrode of isolated gate FET T1 and grid, the other end of R19 links to each other with the 3rd pin of the 3rd operational amplifier U3 with C12, and R21, R22, R23, R27, C15 constitute integrating circuit (the 3rd operational amplification circuit) with the 3rd operational amplifier U3.
As shown in Figure 4, the Laser emission driver element comprises laser diode LD I and laser diode driver circuit.Laser diode driver circuit comprises four-operational amplifier U4 and the 5th operational amplifier U5, and laser diode LD I links to each other with laser diode driver circuit.Annexation is: the 3rd pin of four-operational amplifier U4 links to each other with the 2nd pin of laser diode LD I, the 3rd pin of four-operational amplifier U4 links to each other with the 1st pin of this operational amplifier, the 1st pin of four-operational amplifier U4 links to each other with the 6th pin of the 5th operational amplifier U5 by resistance R 45, the 5th pin of the 5th operational amplifier U5 with by resistance R 42, R43, R44, voltage stabilizing diode D4, the voltage stabilizing network that capacitor C 22 is formed links to each other, the 7th pin of the 5th operational amplifier U5 links to each other with the base stage of triode Q4 by resistance R 48, the collector of triode Q4 links to each other with the 3rd pin of laser diode LD I by resistance R 50, and the 1st pin of laser diode LD I links to each other with power supply+VCC.
As shown in Figure 5, the conditioned signal processing unit comprises time figure conversion chip U6, crystal oscillating circuit and interface circuit, and time figure conversion chip U6 all links to each other with crystal oscillating circuit, interface circuit.Time figure conversion chip U6 can select the TDC-GP2 chip of the general TDC family chip of ACAM company for use.Crystal oscillating circuit comprises crystal oscillator Y4, resistance R 52, R53, capacitor C 26, C27.Interface circuit comprises splicing ear START, STOP, En_Start, En_Stop, INTN, SSN, SCK, SI, SO, RSTN and ClkIn.The concrete annexation of conditioned signal processing unit is: the 1st pin of crystal oscillating circuit links to each other with the 1st pin of digital conversion chip U6, the 2nd pin of crystal oscillating circuit links to each other with the 2nd pin of digital conversion chip U6 by resistance R 53, link to each other by resistance R 52 between the 1st pin of crystal oscillating circuit and the 2nd pin, the end of splicing ear START, STOP, En_Start, En_Stop, INTN, SSN, SCK, SI, SO, RSTN and ClkIn links to each other with the 31st, 30,32,26,8,9,10,11,12,16 pin of time figure conversion chip U6 respectively.In addition, the other end of splicing ear START, STOP respectively with Fig. 3 in modulation signal input end A2, Fig. 4 in signal output terminal A3 link to each other, the other end of splicing ear En_Start, En_Stop, INTN, SSN, SCK, SI, SO, RSTN, ClkIn all links to each other with range finding microcontroller in the transducing unit.The 3rd, 14,22,29 pin of time figure conversion chip U6 all link to each other with power supply+VCC, and the 4th, 7,17,18,19,20,21,23,24,25,27,28 pin all link to each other with power supply GND.
Transducing unit comprises that power module, range finding microprocessor and change send communication module, becomes and send communication module can use the MAX485 chip.The output terminal of range finding microprocessor and laser ranging module links to each other, and the range finding microprocessor send communication module to link to each other with crashproof control enclosure by change.Power module all links to each other with range finding microprocessor, laser ranging module, for they provide electric power.
Crashproof control enclosure comprises crashproof microprocessor, keyboard is set, light-emitting diode display, audible-visual annunciator, pilot relay, detection of power loss module and crashproof communication module, and crashproof communication module is used the MAX485 chip.Crashproof microprocessor with keyboard, light-emitting diode display, audible-visual annunciator, pilot relay, detection of power loss module, crashproof communication module be set all link to each other, crashproof communication module links to each other with the laser ranging transmitter.Crashproof microprocessor adopts the AVR Series chip.
Present embodiment is sent into the detection data of laser ranging module in the crashproof microcontroller of crashproof control enclosure by left side laser ranging transmitter and right side laser ranging transmitter, realizes the output of driving spacing, the isoparametric demonstration of the speed of a motor vehicle and pilot relay actuating signal after high-performance microprocessor is handled.It carries control button and light-emitting diode display, can manually set the early warning distance and the braking distance of crashproof instrument, when detected real-time distance during less than early warning distance and braking distance, audible-visual annunciator is reported to the police or pilot relay produces action, the cut-offfing of the action control driving by pilot relay.The input signal of the crashproof microcontroller of crashproof control enclosure is from being provided with keyboard, and output signal is light-emitting diode display, audible-visual annunciator and pilot relay, and input/output signal is the serial communication signals of transducing unit.When the laser ranging module in the laser ranging transmitter of the left and right sides will drive a vehicle and its both sides barrier between distance detecting arrive after, the numerical value of reflection distance measurements is transferred to corresponding transducing unit in the laser ranging transmitter, send communication module to be sent to crashproof control enclosure by change, detect data and handle, be shown in again on the crashproof control enclosure through corresponding calculated.Reach early warning or the braking distance that is provided with by the user in advance if detect distance, corresponding action will be made by system.
At this example, software flow in the crashproof microcontroller has mainly comprised three aspects: first aspect is exactly to receive the distance value that transmits from transmitter, and should value be presented in real time on the crashproof control enclosure, simultaneously this value is made analysis, judge whether to reach early warning distance or braking distance, as then the alarm lamp of audible-visual annunciator is bright to reach alarming value, and audible-visual annunciator is sounded, as reaching the then pilot relay generation action of limit movement value, the highest relative velocity that obtains between Ben Che and left and right sides barrier by corresponding method also shows in addition.Second aspect is exactly the parameter setting, and the user is provided with parameters such as early warning distance and braking distances by the button on the crashproof control enclosure panel.The 3rd aspect is exactly to handle the data that are stored in crashproof microprocessor internal E2PROM, after setting up parameter, this value of setting stored in the sheet storer E2PROM that can online electricity wipes with electronically written in order to extraction again after the power down at every turn.Through actual test, this example can well realize to driving both sides and obstacle spacing from detection and demonstration, good stability, easy to operate, interchangeability is strong, is not subjected to power frequency and other disturbing effect.
Claims (10)
1. the crashproof instrument of laser ranging comprises crashproof control enclosure, it is characterized in that: also comprise transducing unit and laser ranging module, transducing unit and laser ranging module are formed the laser ranging transmitter, and the laser ranging transmitter links to each other with crashproof control enclosure.
2. the crashproof instrument of laser ranging as claimed in claim 1 is characterized in that: described laser ranging transmitter comprises left side laser ranging transmitter and the right side laser ranging transmitter that structure is the same.
3. the crashproof instrument of laser ranging as claimed in claim 1 or 2, it is characterized in that: described laser ranging module comprises Laser emission driver element, laser signal conditioning unit and conditioned signal processing unit, the Laser emission driver element links to each other with laser signal conditioning unit, and the output terminal of laser signal conditioning unit links to each other with the input end of conditioned signal processing unit.
4. the crashproof instrument of laser ranging as claimed in claim 3, it is characterized in that: described laser signal conditioning unit comprises prime amplifier, bandpass filter and phase-sensitive detector (PSD), the output terminal of prime amplifier is connected to the input end of bandpass filter, the output terminal of bandpass filter is connected to phase-sensitive detector (PSD), and the output terminal of phase-sensitive detector (PSD) is connected to transducing unit.
5. the crashproof instrument of laser ranging as claimed in claim 4, it is characterized in that: described prime amplifier comprises photodiode (PD), photodiode (PD) links to each other with first operational amplification circuit by the passive filtering network, first operational amplification circuit comprises first operational amplifier (U1), and is connected to the first terminal (A1).
6. the crashproof instrument of laser ranging as claimed in claim 4, it is characterized in that: described bandpass filter comprises second operational amplification circuit, second operational amplification circuit comprises second operational amplifier (U2) by the input of the first terminal (A1) acknowledge(ment) signal.
7. the crashproof instrument of laser ranging as claimed in claim 4, it is characterized in that: described phase-sensitive detector (PSD) comprises isolated gate FET (T1) and the 3rd operational amplification circuit, the 3rd operational amplification circuit comprises the 3rd operational amplifier (U3), constitute integrating circuit, the grid of isolated gate FET (T1) links to each other with modulation signal input end (A2), the source electrode of isolated gate FET (T1) and the output terminal of bandpass filter, the 3rd operational amplification circuit all links to each other, be connected with resistance R 20 between the source electrode of isolated gate FET (T1) and grid, the 3rd operational amplification circuit is connected to signal output terminal (A3).
8. the crashproof instrument of laser ranging as claimed in claim 3, it is characterized in that: described Laser emission driver element comprises laser diode (LDI) and laser diode driver circuit, laser diode driver circuit comprises four-operational amplifier (U4) and the 5th operational amplifier (U5), and laser diode (LDI) links to each other with laser diode driver circuit.
9. the crashproof instrument of laser ranging as claimed in claim 3, it is characterized in that described conditioned signal processing unit comprises: described conditioned signal processing unit comprises time figure conversion chip (U6), crystal oscillating circuit and interface circuit, and time figure conversion chip (U6) all links to each other with crystal oscillating circuit, interface circuit.
10. the crashproof instrument of laser ranging as claimed in claim 1 or 2, it is characterized in that: described transducing unit comprises that power supply unit, range finding microprocessor and change send communication module, the output terminal of range finding microprocessor and laser ranging module links to each other, the range finding microprocessor send communication module to link to each other with crashproof control enclosure by change, and power module all links to each other with range finding microprocessor, laser ranging module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200661790U CN201226026Y (en) | 2008-03-25 | 2008-03-25 | Anti-collision instrument for ranging laser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200661790U CN201226026Y (en) | 2008-03-25 | 2008-03-25 | Anti-collision instrument for ranging laser |
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| CN201226026Y true CN201226026Y (en) | 2009-04-22 |
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| CNU2008200661790U Expired - Fee Related CN201226026Y (en) | 2008-03-25 | 2008-03-25 | Anti-collision instrument for ranging laser |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103457552A (en) * | 2013-08-30 | 2013-12-18 | 奇瑞汽车股份有限公司 | Amplification circuit for laser distance measuring receiving system |
| CN103640522A (en) * | 2013-11-21 | 2014-03-19 | 江苏大学 | Device and method for detecting gap between vehicle head and obstacle and based on laser |
| CN106429863A (en) * | 2016-12-09 | 2017-02-22 | 李�诚 | Intelligent alarm device of hoisting deviation of container from F-TR lock |
| CN108131156A (en) * | 2017-12-01 | 2018-06-08 | 山西宏安翔科技股份有限公司 | A kind of mine hydraulic bracket decrement monitoring device |
| CN108483265A (en) * | 2018-06-20 | 2018-09-04 | 南京舜美科技有限公司 | A kind of crane laser ranging anticollision protection system device |
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2008
- 2008-03-25 CN CNU2008200661790U patent/CN201226026Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457552A (en) * | 2013-08-30 | 2013-12-18 | 奇瑞汽车股份有限公司 | Amplification circuit for laser distance measuring receiving system |
| CN103457552B (en) * | 2013-08-30 | 2016-06-01 | 奇瑞汽车股份有限公司 | The amplification circuit of a kind of laser ranging receiving system |
| CN103640522A (en) * | 2013-11-21 | 2014-03-19 | 江苏大学 | Device and method for detecting gap between vehicle head and obstacle and based on laser |
| CN103640522B (en) * | 2013-11-21 | 2015-11-18 | 江苏大学 | Based on the headstock of laser and obstacle spacing from detecting device and method |
| CN106429863A (en) * | 2016-12-09 | 2017-02-22 | 李�诚 | Intelligent alarm device of hoisting deviation of container from F-TR lock |
| CN108131156A (en) * | 2017-12-01 | 2018-06-08 | 山西宏安翔科技股份有限公司 | A kind of mine hydraulic bracket decrement monitoring device |
| CN108483265A (en) * | 2018-06-20 | 2018-09-04 | 南京舜美科技有限公司 | A kind of crane laser ranging anticollision protection system device |
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