CN201974522U - Distance alarm apparatus - Google Patents
Distance alarm apparatus Download PDFInfo
- Publication number
- CN201974522U CN201974522U CN2011200222456U CN201120022245U CN201974522U CN 201974522 U CN201974522 U CN 201974522U CN 2011200222456 U CN2011200222456 U CN 2011200222456U CN 201120022245 U CN201120022245 U CN 201120022245U CN 201974522 U CN201974522 U CN 201974522U
- Authority
- CN
- China
- Prior art keywords
- signal
- distance
- alarm device
- moving target
- alarm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
The utility model embodiment discloses a distance alarm apparatus, which comprises a shell having accommodation space; a radar detector used for real time or set time detection of a moving object in the monitor area of the distance alarm apparatus, and obtaining an object signal; a signal processing module used for analyzing and processing the object signal obtained by the radar detector to obtain the moving direction of the moving object and the distance between the moving object and the alarm apparatus, determining the danger class of the moving object according to the logically corresponding relation between a predetermined moving direction and distance and the danger class, and generating a corresponding alarm control signal; and an alarm output module used for outputting corresponding alarm information according to the alarm control signal generated by the signal processing module. The distance alarm apparatus can obtain the moving direction and distance of the moving object in the monitor area, output the corresponding alarm information in time according to the moving direction and distance, and save cost reasonably and improve practicality.
Description
Technical field
The utility model relates to the distance detection technical field, relates in particular to a kind of distance alarm device.
Background technology
The distance alarm device is meant according to distance factor and determines the residing harmful grade of monitoring objective, and then makes corresponding actuation of an alarm according to harmful grade, with generation that prevents dangerous situation or the further expansion of avoiding the dangerous state of affairs.The application in social life of distance alarm device is very extensive, as is applied to the electronics safety-security area, as burglar alarm; Or be applied to the collision prevention of vehicle field, as the collision-proof alarm of vehicle; Or be applied to the hazardous location, public place, play the effect of dangerous caution.
At present, most distance alarm device all utilizes the Detection Techniques of acousto-optic principle, carry out target detection by emission laser, infrared or hyperacoustic mode, receive the signal of monitoring objective reflection again, calculate the distance of monitoring objective with the mistiming of received signal according to transmitting, report to the police accordingly.The inventor finds, because laser, infrared or hyperacoustic detection mode are subject to the influence of environmental factor (factors such as surface configuration of weather, light, temperature and monitoring objective), a little less than the antijamming capability, detection accuracy is not high, cost high energy consumption height, thus the practicality of distance alarm device reduced.
The utility model content
The utility model embodiment technical matters to be solved is, a kind of distance alarm device is provided, can carry out surveying in real time or regularly to the moving target in the guarded region, obtain the direction of motion and the distance of moving target comparatively accurately, and can in time export corresponding warning message according to direction of motion and distance, and can reasonably save cost, improve practicality.
In order to solve the problems of the technologies described above, the utility model embodiment provides a kind of distance alarm device, comprising:
Housing has accommodation space in the described housing;
Radar detedtor is packaged in the accommodation space of described housing, is used for the moving target in the guarded region real-time or regularly detection range alarm, and obtains echo signal;
Signal processing module, be packaged in the accommodation space of described housing, and be connected with described radar detedtor, be used for the echo signal that described radar detedtor obtains is carried out analyzing and processing, obtain the direction of motion of described moving target and described moving target distance with respect to described distance alarm device, according to default direction of motion and distance logic corresponding relation, determine the residing danger classes of described moving target, and generate corresponding alarm control signal with danger classes;
Alarm output module is packaged in the accommodation space of described housing, and is connected with described signal processing module, is used for the alarm control signal according to described signal processing module generation, exports corresponding warning message.
Wherein, described radar detedtor is the microwave radar sensor;
Described microwave radar sensor comprises the microwave radar antenna, and described microwave radar antenna is a planar microstrip structure;
It is that 24GHz, frequency range are the frequency range of 250MHz that described microwave radar sensor adopts centre frequency, and through described microwave radar antenna launched microwave signal, the scope that described microwave signal covers forms the guarded region of described distance alarm device.
Wherein, the microwave signal of described microwave radar sensor emission adopts the triangular modulation signal to modulate;
Described microwave radar sensor is surveyed moving target in the guarded region by the microwave signal of emission, obtains echo signal, and exports described echo signal in the mode of signal and orthogonal signal in the same way.
Wherein, described signal processing module comprises:
At least two wave filters, be connected with described radar detedtor respectively, be used for respectively the signal in the same way and the orthogonal signal of described radar detedtor output being carried out Filtering Processing, filtering produces undesired signal and the noise signal of disturbing to described signal in the same way and orthogonal signal;
At least two amplifiers are connected with described wave filter, and signal in the same way and orthogonal signal after being used for respectively described filter filtering being handled are carried out processing and amplifying;
At least two AD converter (Analog-to-Digital Conversion, analog to digital converter), be connected with described amplifier, be used for respectively described signal in the same way after the described amplifier processing and amplifying and orthogonal signal being carried out the AD conversion, and the signal after the conversion carried out sampling processing, obtain the signal in the same way and the orthogonal signal of the numeral of sampling;
DSP(Digital Signal Processing, digital signal processing) processor, be connected with described AD converter, the signal in the same way and/or the orthogonal signal that are used for numeral that described AD converter is obtained are carried out the FFT conversion, obtain the frequency spectrum of described digital signal, and the frequency spectrum of described digital signal analyzed, extract the useful signal in the described digital signal, carry out analytical calculation according to described useful signal, obtain the direction of motion of described moving target and described moving target distance with respect to described distance alarm device, and according to default direction of motion and distance logic corresponding relation with danger classes, determine the residing danger classes of described moving target, and generate corresponding alarm control signal.
Wherein, described signal processing module also comprises: the direction Discr., be connected with described dsp processor with described AD converter, the signal in the same way and the orthogonal signal travel direction that are used for numeral that described AD converter is obtained are differentiated, obtain the direction of motion of described moving target, and to described dsp processor output identification result.
Wherein, described alarm output module comprises at least one positive-negative-positive open collector export structure, and the output terminal of described positive-negative-positive open collector export structure is according to the alarm control signal of described signal processing module output, output alarm information.
Wherein, described distance alarm device also comprises: electrostatic discharge protection circuit is packaged in the accommodation space of described housing, and is connected with described alarm output module, be used for described distance alarm device is carried out ESD(Electro-Static discharge, static discharges) electrostatic defending.
Wherein, described distance alarm device also comprises: power supply, be connected with described radar detedtor, described signal processing module, described alarm output module and described electrostatic discharge protection circuit, be used to described radar detedtor, described signal processing module, described alarm output module and described electrostatic discharge protection circuit that working power is provided.
Wherein, described housing is provided with the anti-water hole of at least one heat radiation.
Implement the utility model embodiment, have following beneficial effect:
1, the utility model embodiment adopts radar detedtor to obtain the echo signal of the moving target in the guarded region; Because the antijamming capability of radar (especially microwave radar) is stronger, detection accuracy is higher, and therefore, the echo signal that is obtained by radar detedtor is more stable, and accuracy is higher; Adopt the signal processing module of distance alarm device inside that echo signal is carried out analyzing and processing, obtain the direction of motion and the distance of moving target, determine the residing danger classes of described moving target thus, generate alarm control signal control alarm output module output alarm information then; Make the distance alarm device in time carry out corresponding warning, improved practicality according to distance factor;
2, the radar detedtor of the utility model embodiment adopts the microwave radar antenna, and this microwave radar antenna is a planar microstrip structure, has effectively reduced the volume of distance alarm device, greatly reduces energy consumption, has reasonably saved cost; Signal processing module employing height is integrated, the processor of high-intelligentization, can carry out signal Processing fast, has improved the performance of distance alarm device; Alarm output module adopts the open collector export structure, can directly connect various devices at output terminal as required, can realize the expansion of distance alarm device, has further improved the practicality of distance alarm device.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the embodiment of distance alarm device of the present utility model;
Fig. 2 is the inner structure synoptic diagram of distance alarm device shown in Figure 1;
Fig. 3 is the structural representation of first embodiment of signal processing module of the present utility model;
The microwave signal of Fig. 4 after and the curve map of the echoed signal that receives for the modulation of radar detedtor of the present utility model emission;
Fig. 5 is this structural representation for second embodiment of signal processing module of the present utility model;
Fig. 6 is the structural representation of the embodiment of direction Discr. of the present utility model;
Fig. 7 is the structural representation of the embodiment of alarm output module of the present utility model;
Fig. 8 is the synoptic diagram of the Application Example of distance alarm device of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Need to prove that distance alarm device of the present utility model is applicable to the field that all need rely on distance factor to report to the police, as: be applicable to the electronics safety-security area, can be used as burglar alarm; Be applicable to the collision prevention of vehicle field, can be used as automobile collision preventing and report to the police; In addition, distance alarm device of the present utility model also can be applicable to hazardous location of some public places or the like.
See also Fig. 1, be the structural representation of the embodiment of distance alarm device of the present utility model; Described distance alarm device comprises:
Housing 1; described housing 1 roughly is square; has accommodation space in it; described housing 1 is provided with at least one the anti-water hole of heat radiation (not shown); described distance alarm device heat radiation both can have been assisted in the anti-water hole of this heat radiation, guaranteed the normal operation of described distance alarm device, can effectively prevent that outside water or water vapour from entering in the described housing 1 simultaneously again; protect the internal components of described distance alarm device not to be damaged, prolong the serviceable life of described distance alarm device.
Please, be the inner structure synoptic diagram of distance alarm device shown in Figure 1 in the lump referring to Fig. 2; Described distance alarm device also comprises:
Preferably, described radar detedtor 10 is the microwave radar sensor, and it is that 24GHz, frequency range are the frequency range of 250MHz that this microwave radar sensor is selected centre frequency for use, and adopts the microwave radar antenna launched microwave signal of planar microstrip structure.Described microwave radar sensor is with FMCW(Frequency Modulated Continuous Wave, Continuous Wave with frequency modulation) pattern, regularly carry out work in real time or on schedule, the microwave signal of its emission is after the modulation signal modulation, form with the high frequency continuous wave is outwards launched, the zone that microwave signal covered of emission constitutes the guarded region of described distance alarm device, when moving target occurring in the guarded region, described microwave signal is reflected to form echoed signal by described moving target, described microwave radar sensor receives the echoed signal of described moving target reflection, and this echoed signal has been carried the direction of motion information of described moving target and the described moving target range information with respect to described distance alarm device; Described microwave radar sensor carries out Frequency mixing processing with echoed signal that receives and the microwave signal of self launching, obtain echo signal, described echo signal is to carry the direction of motion information of described moving target and the described moving target mixed frequency signal with respect to the range information of described distance alarm device, afterwards, described microwave radar sensor is to export described echo signal with the quadrature dual mode in the same way.
Need to prove that the described echo signal that described microwave radar sensor is exported in mode in the same way is signal in the same way, is called I signal again; Described microwave radar sensor is orthogonal signal with the described echo signal of orthogonal manner output, is called Q signal again; I, Q two paths of signals are the intermediate frequency difference frequency signal that the two-way Frequency and Amplitude is identical, direction differs 90 degree, by I, Q two paths of signals are carried out analyzing and processing, can obtain the direction of motion of described moving target and described moving target distance with respect to described distance alarm device.In addition, the penetrable described housing of the microwave signal of the microwave radar antenna of described microwave radar sensor emission 1 is invaded so that whether moving target is arranged in the guarded region of surveying described distance alarm device to external radiation.In addition, preferably, the modulation signal of described microwave signal is the triangular modulation signal, and this modulation signal can be sent by signal generator, or is provided by the signal processing module 20 of described distance alarm device.
Please in the lump referring to Fig. 3, be the structural representation of first embodiment of signal processing module 20 of the present utility model; Described signal processing module 20 comprises:
At least two wave filters 201 are connected with described radar detedtor 10 respectively, are used for the I signal and the Q signal of described radar detedtor 10 outputs are carried out Filtering Processing, and filtering produces undesired signal and the noise signal of disturbing to I signal and Q signal.
At least two amplifiers 202 are connected with described wave filter 201, are used for respectively I signal and Q signal after described wave filter 201 Filtering Processing being carried out processing and amplifying.
At least two AD converter 203 are connected with described amplifier 202, be used for respectively I signal after described amplifier 202 processing and amplifying and Q signal being carried out the AD conversion, and the signal after the conversion is carried out sampling processing, obtain the I signal and the Q signal of the numeral of sampling.
In the specific implementation, because that described radar detedtor 10 outputs is I, the Q two paths of signals, therefore, adopt at least two described wave filters 201 respectively described I signal and Q signal to be carried out Filtering Processing, adopt at least two described amplifiers 202 respectively described I signal and Q signal to be carried out processing and amplifying, through described wave filter 201, after described amplifier 202 filtering are amplified, can obtain carrying more clearly the direction of motion information of described moving target and described moving target I signal and the Q signal with respect to the range information of described distance alarm device, these two I signal and Q signal are sent to respectively and are carried out the AD conversion at least two AD converter 213 more clearly; Because described radar detedtor 10 adopts the FMCW mode of operation, therefore, I signal that its detection obtains and Q signal are the continuous wave signal of simulation, described AD converter 213 is converted to digital signal with the continuous wave signal of simulation, for convenience this digital signal is handled, the signal after 213 pairs of AD conversions of described AD converter carries out sampling processing, obtains the digital signal of sampling, promptly after described AD converter 213 is handled, the Q signal of the I signal of the numeral after obtaining sampling and numeral.
In the specific implementation, the concrete processing procedure of described dsp processor 204 is: at first, the I signal of the numeral that described AD converter 203 is obtained and Q signal carry out phase place to be differentiated, obtains the phase differential of described two paths of signals; When described moving target was done radial motion near described distance alarm device, I signal lagged behind Q signal, and in theory, I signal relies on and lags behind Q signal 90 degree; When described moving target was done radial motion away from described distance alarm device, I signal was ahead of Q signal, and in theory, I signal is ahead of Q signal 90 degree; Described dsp processor 204 is according to the described I that obtains, the phase differential of Q two paths of signals, determine that I signal is ahead of Q signal, determine that perhaps I signal lags behind Q signal, thus determine described moving target with respect to the direction of motion of described distance alarm device be near or away from.Secondly, select arbitrary signal the I signal of the numeral that obtains from described AD converter 203 or the Q signal, and the signal of selecting is carried out the FFT conversion, this digital signal is transformed into frequency domain from time domain, analyze the frequency spectrum of this signal on the frequency domain then, extract at least two frequency peak:
With
Please, be the curve map of the microwave signal after the modulation of radar detedtor emission of the present utility model with the echoed signal that receives in the lump referring to Fig. 4; Microwave signal after the modulation of the solid line representative emission among Fig. 4 (
), the echoed signal that the dotted line representative receives (
).
Representative is in the signal frequency of the uphill slope stage of three angle-modulated signals radar detedtor 10 outputs;
Representative is in the signal frequency of the descending grade stage of three angle-modulated signals radar detedtor 10 outputs.
Be the frequency of a certain moment echoed signal difference compared to the frequency that transmits, this is the difference on the frequency that is produced by delay effect; Because the microwave signal of described radar detedtor 10 emissions is after triangular modulation, different frequency differences of outwards launching constantly, after the 10 a certain moment of radar detedtor are outwards launched microwave signal, need can receive the echoed signal that reflects through described moving target through the Δ t time, Δ t is echoed signal compared to the time delay that transmits;
Be the difference frequency signal that this Δ t time is produced.
Be Doppler shift, this is the difference on the frequency that is produced by Doppler effect; Because the microwave signal after the modulation of described radar detedtor 10 emissions forms echoed signal and returns after described moving target reflection, this process can produce Doppler effect, thereby on Y-axis (frequency axis), produces a Doppler shift.
According to distance R and difference frequency
DelayRelation:
, can get:
According to Doppler's formula:
For simplify calculating, only consider of the radial motion of described moving target with respect to described distance alarm device, this moment angle [alpha]=0, then formula (2) can be reduced to:
Further as shown in Figure 4, in the uphill slope stage of triangular modulation signal, time delay effect and Doppler effect are cancelled out each other; In the descending grade stage of triangular modulation signal, time delay effect and Doppler effect mutual superposition, then:
(B)-(A) can get:
Formula (C) substitution formula (1) can be got range formula:
Wherein, R is the distance of described moving target with respect to described distance alarm device; c
0Be the light velocity, T is the modulation signal cycle, and Δ is the variation range of described radar detedtor 10 transmission frequencies, i.e. frequency modulation width, and in the present embodiment, Δ is 250MHz.
As described above, after 204 pairs of frequency spectrums of described dsp processor are analyzed, extract at least two frequency peak:
With
, two above-mentioned range formulas of frequency peak substitution that described dsp processor will extract then can calculate the distance of described moving target with respect to described distance alarm device.
Need to prove that stored predefined direction of motion and the distance and the logic corresponding relation of danger classes in the described distance alarm device, described logic corresponding relation is: the combination of any direction of motion and any distance, corresponding unique a kind of danger classes.Particularly, the form that described distance alarm device can be shown is stored described logic corresponding relation, as following table one:
Table one: direction of motion and the distance and the logic mapping table of danger classes
Be understandable that, every value is only for giving an example in the last table, other situations can be set according to actual needs, such as: the distance value of setting can be set at other values or other scopes as required, as be set at smaller or equal to 5m,, smaller or equal to 15m, reach greater than 20m or the like smaller or equal to 20m smaller or equal to 10m greater than 5m greater than 10m greater than 15m; For another example: various danger classess can adopt digital level to divide, as pressing order from low to high, danger classes is made as safe class, first danger classes, second danger classes, N(N 〉=1) danger classes, or the like, but similar analysis under above-mentioned other situations is not given unnecessary details at this.
Described dsp processor 204 according to above-mentioned table one, is determined the residing danger classes of described moving target, and is generated corresponding alarm control signal after obtaining the direction of motion and the distance of described moving target with respect to described distance alarm device of described moving target.Be understandable that when described moving target is in safe class, described dsp processor 204 is ignored described moving target, does not produce alarm control signal.
Please in the lump referring to Fig. 5, be the structural representation of second embodiment of signal processing module 20 of the present utility model; Identical with a last embodiment, described signal processing module 20 comprises: at least two wave filters 201, at least two amplifiers 202, at least two AD converter 203 and dsp processors 204.In the present embodiment, described signal processing module 20 also comprises:
Direction Discr. 205 is connected with described dsp processor 204 with described AD converter 203, and the I signal and the Q signal travel direction that are used for numeral that described AD converter 203 is obtained are differentiated, obtain the direction of motion of described moving target.
In the specific implementation,, be the structural representation of the embodiment of direction Discr. of the present utility model please in the lump referring to Fig. 6; Preferably, described direction Discr. 205 comprises two d type flip flops, a monostalbe trigger and two LED(Light Emitting Diode, light emitting diode), in two d type flip flops, the input end of one of them d type flip flop is connected with the described AD converter 203 of described output I signal, and the output terminal of this d type flip flop is connected with first LED; The input end of another d type flip flop is connected with the Q signal output terminal of the AD converter 203 of described output Q signal, and the output terminal of this d type flip flop is connected with second LED.Digital I signal and Q signal travel direction that two d type flip flops are used for described AD converter 203 is obtained are differentiated, after the two paths of signals of described AD converter 203 outputs is also exported through two d type flip flops respectively, if first LED is at first lighted, show I signal preceding, described moving target is done radial motion near described distance alarm device; If second LED at first lighted, show Q signal preceding, described moving target is done radial motion away from described distance alarm device.Further, described monostalbe trigger is connected with described two d type flip flops respectively, be used for after two d type flip flops are finished the direction discriminating, and described two LED that reset, the direction of being convenient to is next time differentiated.
Need to prove that in the present embodiment, the direction of motion of described moving target determines that by described direction Discr. 205 described dsp processor 204 only is for data processing, and does not need travel direction to differentiate.Particularly, described AD converter 203 output I, Q two paths of signals are to described dsp processor 204, described dsp processor 204 selects arbitrary signal to carry out data processing, obtain the distance of described moving target with respect to described distance alarm device, concrete processing procedure is identical with a last embodiment, does not give unnecessary details at this.Simultaneously, described AD converter 203 also can export I, Q two paths of signals to described direction Discr. 205, differentiate by described direction Discr. 205 travel directions, and the direction of motion of definite described moving target, described direction Discr. 205 is passed to described dsp processor 204 with the identification result (i.e. the direction of motion of the described moving target of Que Dinging) that obtains, by described dsp processor 204 according to default direction of motion and distance logic corresponding relation with danger classes, determine the residing danger classes of described moving target, and generate corresponding alarm control signal.
Be understandable that the direction Discr. 205 of present embodiment also can adopt other mode travel directions to differentiate that present embodiment is set up direction Discr. 205, and adopt hardware mode that the signal travel direction is differentiated, alleviated the processing burden of dsp processor 204.
See also Fig. 1 again, described distance alarm device also comprises:
In the specific implementation,, be the structural representation of the embodiment of alarm output module of the present utility model please in the lump referring to Fig. 7; Frame of broken lines part among the described alarm output module 30(figure) comprise three positive-negative-positive open collector export structures, the output terminal of each positive-negative-positive open collector export structure all is connected with a resistance and a LED.According to above-mentioned example, determining the direction of motion of described moving target when described dsp processor 204 is near described distance alarm device, the current distance that calculates is: 9m, according to above-mentioned table one, described dsp processor 204 is determined current danger (low) grade that is in of described moving target, then export alarm control signal under this danger (low) grade to described alarm output module 30, described alarm control signal is controlled the output terminal 3 output high level of described alarm output module 30, at this moment, the LED that output terminal 3 is connected is lighted, and extinguishes after the default time of maintenance.Determining the direction of motion of described moving target when described dsp processor 204 is near described distance alarm device, the current distance that calculates is: 6m, according to above-mentioned table one, described dsp processor determine described moving target when pre-treatment danger (in) grade, then export this danger (in) alarm control signal under the grade is to described alarm output module 30, described alarm control signal is controlled the output terminal 2 output high level of described alarm output module 30, at this moment, the LED that output terminal 2 is connected is lighted, and extinguishes after the default time of maintenance.Determining the direction of motion of described moving target when described dsp processor 204 is near described distance alarm device, the current distance that calculates is: 3m, according to above-mentioned table one, described dsp processor 204 determines that described moving target is when pre-treatment danger (height) grade, then export alarm control signal under this danger (height) grade to described alarm output module 30, described alarm control signal is controlled the output terminal 1 output high level of described alarm output module 30, at this moment, the LED that output terminal 1 is connected is lighted, and extinguishes after the default time of maintenance.Be understandable that the LED that each output terminal connected can be preset according to actual conditions by the duration after lighting, LED extinguishes after being lighted the default time of back and maintenance herein, can make things convenient for the output of warning message next time.
Need to prove, the form output alarm information that described alarm output module 30 adopts flashing light to report to the police only is for example, it can also adopt the combination of other modes such as the output of voice output, jingle bell, vibration output or other modes, when adopting other modes or other mode array outputs, the LED that only needs each output terminal is connected replaces with corresponding output unit and gets final product.In addition, LED of alarm control signal control of a danger classes of described alarm output module 30 employings carries out the form of flashing light warning also only for for example, can also adopt the alarm control signal of a danger classes to control the form that a plurality of LED while flashing lights are reported to the police.Further, above-mentioned alarm output module 30 adopts three output terminals also only for for example, the quantity that it can determine output terminal according to other quantity of danger classes and the warning form accordingly of actual set.Described alarm output module 30 adopts the way of output of positive-negative-positive open collector export structure also only for for example, can also adopt NPN type open collector export structure, or directly control different warning device output alarm information by alarm control signal.But similar analysis under above-mentioned other situations is not given unnecessary details at this.
Electrostatic discharge protection circuit 40 is connected with described alarm output module 30, is used for described distance alarm device is carried out the ESD electrostatic defending, in case outside instantaneous pressure damages described distance alarm device.
In the specific implementation, described electrostatic discharge protection circuit 40 comprises a plurality of Transient Suppression Diodes.Each output terminal of described alarm output module 30 all is connected in parallel with at least one Transient Suppression Diode.Described electrostatic discharge protection circuit 40 can provide ESD to a certain degree electrostatic defending to described distance alarm device, in case outside instantaneous pressure damages the internal components of described distance alarm device.
In the specific implementation, described power supply 50 can be general dry battery or rechargeable battery, wherein, when described power supply 50 is rechargeable battery, described distance alarm device also can be provided with charging circuit in inside, for rechargeable battery charges, supply with the power supply that guarantees described distance alarm device, guarantee the operate as normal of distance alarm device.
To the assembling and the operating principle of distance alarm device of the present utility model be described in detail below.
The operating principle of distance alarm device of the present utility model is described with an object lesson below.
See also Fig. 8, be the synoptic diagram of the Application Example of distance alarm device of the present utility model; The setpoint distance alarm is installed on the tailstock of haulage truck, according to actual needs, selects suitable height and angle that described distance alarm device has been installed at the tailstock of haulage truck.
As shown in Figure 8, after described distance alarm device powers on, described radar detedtor 10 real-time or regularly outside launched microwave signals, the zone that the microwave signal of emission covers forms the guarded region of described distance alarm device, described radar detedtor 10 surveys in the guarded region whether have moving target, suppose to have a motorcycle to drive in the described guarded region, described radar detedtor 10 obtains the echoed signal of this motorcycle reflection, and the microwave signal of echoed signal and self emission carried out Frequency mixing processing, obtain echo signal, and to described signal processing module 20 output I, the Q two paths of signals.
Described signal processing module 20 receives I, behind the Q two paths of signals, at first it being carried out filtering amplifies, travel direction is differentiated then, determine the direction of motorcycle sport, and to I, arbitrary road signal in the Q two paths of signals carries out data processing, obtain the distance of motorcycle with respect to haulage truck, judge the residing danger classes of this motorcycle according to above-mentioned table one, if motorcycle moves away from haulage truck, then described signal processing module 20 judges that this motorcycle is in safe class, this moment, motorcycle can not constitute danger to haulage truck, and signal processing module 20 is not done any processing; If motorcycle is near the haulage truck motion, then described signal processing module 20 is further according to the distance of motorcycle with respect to haulage truck, determine the residing danger classes of motorcycle, and generate corresponding alarm control signal according to danger classes, export this alarm control signal to alarm output module 30.
Be understandable that above-mentioned distance alarm device is applied to the collision prevention of vehicle field only for for example, can carry out similar analysis to the applicable cases of other field, does not give unnecessary details at this.
Need to prove that the structure of distance alarm device of the present utility model only is for example, other structures, such as: the housing of distance alarm device can also be other shapes, as circle, ellipse etc.; For another example: direction Discr. 205 also can adopt other mode travel directions to differentiate, as adopts existing direction identification device etc.; And for example: each output terminal of alarm output module 30 can also connect other output units, or the like, but similar analysis under above-mentioned other situations is not given unnecessary details at this.
By the description of the foregoing description, the utility model embodiment adopts radar detedtor to obtain the echo signal of the moving target in the guarded region; Because the antijamming capability of radar (especially microwave radar) is stronger, detection accuracy is higher, and therefore, the echo signal that is obtained by radar detedtor is more stable, and accuracy is higher; Adopt the signal processing module of distance alarm device inside that echo signal is carried out analyzing and processing, obtain the direction of motion and the distance of moving target, determine the residing danger classes of described moving target thus, generate alarm control signal control alarm output module output alarm information then; Make the distance alarm device in time carry out corresponding warning, improved practicality according to distance factor; The radar detedtor of the utility model embodiment adopts the microwave radar antenna, and this microwave radar antenna is a planar microstrip structure, has effectively reduced the volume of distance alarm device, greatly reduces energy consumption, has reasonably saved cost; Signal processing module employing height is integrated, the processor of high-intelligentization, can carry out signal Processing fast, has improved the performance of distance alarm device; Alarm output module adopts the open collector export structure, can directly connect various devices at output terminal as required, can realize the expansion of distance alarm device, has further improved the practicality of distance alarm device.
Above disclosed only is preferred embodiment of the present utility model, certainly can not limit the interest field of the utility model with this, one of ordinary skill in the art will appreciate that all or part of flow process that realizes the foregoing description, and according to the equivalent variations that the utility model claim is done, the scope that still belongs to utility model and contained.
Claims (9)
1. a distance alarm device is characterized in that, comprising:
Housing has accommodation space in the described housing;
Radar detedtor is packaged in the accommodation space of described housing, is used for the moving target in the guarded region real-time or regularly detection range alarm, and obtains echo signal;
Signal processing module, be packaged in the accommodation space of described housing, and be connected with described radar detedtor, be used for the echo signal that described radar detedtor obtains is carried out analyzing and processing, obtain the direction of motion of described moving target and described moving target distance with respect to described distance alarm device, according to default direction of motion and distance logic corresponding relation, determine the residing danger classes of described moving target, and generate corresponding alarm control signal with danger classes;
Alarm output module is packaged in the accommodation space of described housing, and is connected with described signal processing module, is used for the alarm control signal according to described signal processing module generation, exports corresponding warning message.
2. distance alarm device as claimed in claim 1 is characterized in that:
Described radar detedtor is the microwave radar sensor;
Described microwave radar sensor comprises the microwave radar antenna; Described microwave radar antenna is a planar microstrip structure;
It is that 24GHz, frequency range are the frequency range of 250MHz that described microwave radar sensor adopts centre frequency, and through described microwave radar antenna launched microwave signal, the scope that described microwave signal covers forms the guarded region of described distance alarm device.
3. distance alarm device as claimed in claim 2 is characterized in that:
The microwave signal of described microwave radar sensor emission adopts the triangular modulation signal to modulate;
Described microwave radar sensor is surveyed moving target in the guarded region by the microwave signal of emission, obtains echo signal, and exports described echo signal in the mode of signal and orthogonal signal in the same way.
4. distance alarm device as claimed in claim 3 is characterized in that, described signal processing module comprises:
At least two wave filters, be connected with described radar detedtor respectively, be used for respectively the signal in the same way and the orthogonal signal of described radar detedtor output being carried out Filtering Processing, filtering produces undesired signal and the noise signal of disturbing to described signal in the same way and orthogonal signal;
At least two amplifiers are connected with described wave filter, and signal in the same way and orthogonal signal after being used for respectively described filter filtering being handled are carried out processing and amplifying;
At least two AD converter, be connected with described amplifier, be used for respectively described signal in the same way after the described amplifier processing and amplifying and orthogonal signal being carried out the AD conversion, and the signal after the conversion is carried out sampling processing, obtain the signal in the same way and the orthogonal signal of the numeral of sampling;
Dsp processor, be connected with described AD converter, the signal in the same way and/or the orthogonal signal that are used for numeral that described AD converter is obtained are carried out the FFT conversion, obtain the frequency spectrum of described digital signal, and the frequency spectrum of described digital signal analyzed, extract the useful signal in the described digital signal, carry out analytical calculation according to described useful signal, obtain the direction of motion of described moving target and described moving target distance with respect to described distance alarm device, according to default direction of motion and distance logic corresponding relation with danger classes, determine the residing danger classes of described moving target, and generate corresponding alarm control signal.
5. distance alarm device as claimed in claim 4 is characterized in that, described signal processing module also comprises:
The direction Discr., be connected with described dsp processor with described AD converter, the signal in the same way and the orthogonal signal travel direction that are used for numeral that described AD converter is obtained are differentiated, obtain the direction of motion of described moving target, and to described dsp processor output identification result.
6. as each described distance alarm device of claim 1-5, it is characterized in that:
Described alarm output module comprises at least one positive-negative-positive open collector export structure, and the output terminal of described positive-negative-positive open collector export structure is according to the alarm control signal of described signal processing module output, output alarm information.
7. distance alarm device as claimed in claim 6 is characterized in that, also comprises:
Electrostatic discharge protection circuit is packaged in the accommodation space of described housing, and is connected with described alarm output module, is used for described distance alarm device is carried out the ESD electrostatic defending.
8. distance alarm device as claimed in claim 7 is characterized in that, also comprises:
Power supply, be connected with described radar detedtor, described signal processing module, described alarm output module and described electrostatic discharge protection circuit, be used to described radar detedtor, described signal processing module, described alarm output module and described electrostatic discharge protection circuit that working power is provided.
9. distance alarm device as claimed in claim 8 is characterized in that, described housing is provided with the anti-water hole of at least one heat radiation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200222456U CN201974522U (en) | 2011-01-24 | 2011-01-24 | Distance alarm apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200222456U CN201974522U (en) | 2011-01-24 | 2011-01-24 | Distance alarm apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201974522U true CN201974522U (en) | 2011-09-14 |
Family
ID=44579622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200222456U Expired - Fee Related CN201974522U (en) | 2011-01-24 | 2011-01-24 | Distance alarm apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201974522U (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425239A (en) * | 2015-11-13 | 2016-03-23 | 芜湖森思泰克智能科技有限公司 | Electric bicycle backward anti-collision radar device |
| CN105578820A (en) * | 2015-07-25 | 2016-05-11 | 宇龙计算机通信科技(深圳)有限公司 | Mobile terminal rear cover and mobile terminal |
| CN105809889A (en) * | 2016-05-04 | 2016-07-27 | 南通洁泰环境科技服务有限公司 | Safety alarm device |
| CN106127992A (en) * | 2016-07-18 | 2016-11-16 | 柳州永旺科技有限公司 | A kind of orchard anti-theft device |
| CN106297167A (en) * | 2016-08-28 | 2017-01-04 | 姜俊 | A kind of intelligent domestic system |
| CN106990407A (en) * | 2017-02-24 | 2017-07-28 | 联创汽车电子有限公司 | Anti-collision alarm system ultrasonic blind zone processing method and anti-collision alarm system |
| CN107076831A (en) * | 2014-09-29 | 2017-08-18 | 黑拉许克联合股份有限公司 | Radar sensor |
| CN109799501A (en) * | 2018-12-17 | 2019-05-24 | 珠海格力电器股份有限公司 | A kind of monitoring method of monitoring device, device, storage medium and monitoring device |
| CN110426697A (en) * | 2019-07-05 | 2019-11-08 | 上海矽杰微电子有限公司 | A kind of radar target detection method and system |
| CN110537865A (en) * | 2019-08-08 | 2019-12-06 | 上海科勒电子科技有限公司 | intelligent toilet seat control method, electronic device and storage medium |
| CN111790547A (en) * | 2020-07-15 | 2020-10-20 | 芜湖乐维汽车装备设计有限公司 | Clamping device for spraying automobile bumper |
| CN112859069A (en) * | 2021-01-14 | 2021-05-28 | 上海为彪汽配制造有限公司 | Radar security monitoring method and system |
| CN115201843A (en) * | 2022-09-16 | 2022-10-18 | 成都量芯集成科技有限公司 | Phase ranging structure and method based on multi-frequency light emission |
| CN115783983A (en) * | 2022-11-29 | 2023-03-14 | 鄂尔多斯市国源矿业开发有限责任公司 | Automatic unhooking control system based on radar speed measurement technology |
-
2011
- 2011-01-24 CN CN2011200222456U patent/CN201974522U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107076831A (en) * | 2014-09-29 | 2017-08-18 | 黑拉许克联合股份有限公司 | Radar sensor |
| CN107076831B (en) * | 2014-09-29 | 2021-09-10 | 黑拉许克联合股份有限公司 | Radar sensor |
| CN105578820A (en) * | 2015-07-25 | 2016-05-11 | 宇龙计算机通信科技(深圳)有限公司 | Mobile terminal rear cover and mobile terminal |
| CN105425239A (en) * | 2015-11-13 | 2016-03-23 | 芜湖森思泰克智能科技有限公司 | Electric bicycle backward anti-collision radar device |
| CN105809889A (en) * | 2016-05-04 | 2016-07-27 | 南通洁泰环境科技服务有限公司 | Safety alarm device |
| CN106127992A (en) * | 2016-07-18 | 2016-11-16 | 柳州永旺科技有限公司 | A kind of orchard anti-theft device |
| CN106297167A (en) * | 2016-08-28 | 2017-01-04 | 姜俊 | A kind of intelligent domestic system |
| CN106990407B (en) * | 2017-02-24 | 2020-12-29 | 联创汽车电子有限公司 | Ultrasonic blind area processing method of anti-collision alarm system and anti-collision alarm system |
| CN106990407A (en) * | 2017-02-24 | 2017-07-28 | 联创汽车电子有限公司 | Anti-collision alarm system ultrasonic blind zone processing method and anti-collision alarm system |
| CN109799501A (en) * | 2018-12-17 | 2019-05-24 | 珠海格力电器股份有限公司 | A kind of monitoring method of monitoring device, device, storage medium and monitoring device |
| CN110426697A (en) * | 2019-07-05 | 2019-11-08 | 上海矽杰微电子有限公司 | A kind of radar target detection method and system |
| CN110537865A (en) * | 2019-08-08 | 2019-12-06 | 上海科勒电子科技有限公司 | intelligent toilet seat control method, electronic device and storage medium |
| CN111790547A (en) * | 2020-07-15 | 2020-10-20 | 芜湖乐维汽车装备设计有限公司 | Clamping device for spraying automobile bumper |
| CN112859069A (en) * | 2021-01-14 | 2021-05-28 | 上海为彪汽配制造有限公司 | Radar security monitoring method and system |
| CN115201843A (en) * | 2022-09-16 | 2022-10-18 | 成都量芯集成科技有限公司 | Phase ranging structure and method based on multi-frequency light emission |
| CN115783983A (en) * | 2022-11-29 | 2023-03-14 | 鄂尔多斯市国源矿业开发有限责任公司 | Automatic unhooking control system based on radar speed measurement technology |
| CN115783983B (en) * | 2022-11-29 | 2024-04-02 | 鄂尔多斯市国源矿业开发有限责任公司 | Automatic unhooking control system based on radar speed measurement technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201974522U (en) | Distance alarm apparatus | |
| US8508721B2 (en) | Multifunction aircraft LIDAR | |
| CN103235310B (en) | Vehicular millimeter-wave train collision avoidance radar system | |
| Liu et al. | A radar-based blind spot detection and warning system for driver assistance | |
| CN102788980A (en) | Automobile anticollision radar system based on frequency-modulated continuous wave | |
| CN103576155A (en) | Microwave radar type automobile anti-collision early warning system | |
| CN105917396A (en) | Emergency vehicle alert system | |
| CN201773434U (en) | Personnel flow monitoring and analyzing system | |
| CN104991247B (en) | Low-interception velocity measurement method and radar device | |
| CN104169738A (en) | Determining relative positioning information | |
| CN105319546A (en) | Multi-target radar and adopted digital signal processing method thereof | |
| CN203012135U (en) | Frequency-modulated continuous wave radar system | |
| CN101876707B (en) | Millimeter wave/infrared composite detection radar | |
| CN1265208C (en) | All-solid integrated smalltype millimeter-ware anticollision radar equipment | |
| CN107783116A (en) | Pilotless automobile complex environment anticollision millimetre-wave radar system | |
| CN107167796A (en) | Monobasal millimetre-wave radar system | |
| CN107783115A (en) | The remote complex environment anticollision millimetre-wave radar system of rotor wing unmanned aerial vehicle | |
| CN107783123A (en) | Pilotless automobile complex environment anticollision MMW RADAR SIGNAL USING processing system and method | |
| CN208432728U (en) | A kind of Planar integration type micro-wave height finding radar applied to unmanned plane | |
| CN101915921A (en) | Double-beam four-antenna microwave traffic information detection radar and information detection method | |
| CN107783118A (en) | The avoiding collision of fixed-wing unmanned plane multiple target CAS based on millimetre-wave radar | |
| CN203259653U (en) | Multi-target detection system of automotive anti-collision radar | |
| CN107783128A (en) | Fixed-wing unmanned plane multiple target CAS based on millimetre-wave radar | |
| CN2468062Y (en) | Anti-collision millimeter wave radar for vehicle | |
| CN202119902U (en) | 77 GHz millimeter wave automobile anti-collision radar signal processing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20150124 |
|
| EXPY | Termination of patent right or utility model |