CN214041729U - Automatic door with FMCW microwave inductor - Google Patents
Automatic door with FMCW microwave inductor Download PDFInfo
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- CN214041729U CN214041729U CN202023061180.4U CN202023061180U CN214041729U CN 214041729 U CN214041729 U CN 214041729U CN 202023061180 U CN202023061180 U CN 202023061180U CN 214041729 U CN214041729 U CN 214041729U
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Abstract
The utility model belongs to the technical field of the automatically-controlled door, especially, relate to an automatically-controlled door with FMCW microwave inductor, including connecting gradually automatically-controlled door host computer, motor, driving belt and removal door leaf, still include FMCW microwave inductor, wherein, the microwave module includes: signal filtering amplifies module, high frequency module and antenna module, the antenna module with the high frequency module is connected, the utility model discloses a set up FMCW microwave inductor to make FMCW microwave inductor with the automatically-controlled door host computer is connected, and makes signal filtering amplifies the module with the signal processing module is connected, makes the high frequency module with signal filtering amplifies the module and connects, and compared with prior art, this application is through addding the frequency modulator, comes frequency modulation and then makes the antenna module sends the electromagnetic wave through frequency modulation to whether have the personnel to come in and go out in the detection zone of accurate detection automatically-controlled door, and then carries out accurate control to the automatically-controlled door and opens and shuts, promotes the security performance of automatically-controlled door, promotes user experience.
Description
Technical Field
The utility model belongs to the technical field of the automatically-controlled door, especially, relate to an automatically-controlled door with FMCW microwave inductor.
Background
At present, the basic working principle of automatic doors in the market is basically the same as that of automatic door machines, and after basic hardware setting is set, a set of simple automatic door systems can be configured by adding a door opening signal. The system configuration of the automatic door refers to peripheral auxiliary control devices which are equipped according to the use requirements and connected with the automatic door controller, such as a door opening signal source, an access control system, a safety device, a centralized control device and the like. Must be based on the characteristics of the building. Auxiliary control devices are reasonably equipped according to the composition of personnel and the system requirements of building automatic control and the like.
However, whether the present automatically-controlled door only adopts transmitting antenna and receiving antenna to detect whether personnel come in and go out in the detection area of automatically-controlled door in the control structure, and this kind of structure has the problem that the detection precision is low, and then leads to the control precision to the automatically-controlled door low, therefore leads to the easily because of opening and shutting not accurate problem that leads to the accidental injury personnel, influences user experience. Therefore, there is a real need to design an automatic door with an FMCW microwave inductor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an automatically-controlled door with FMCW microwave inductor aims at solving among the prior art automatic door control precision and does not highly lead to influencing the technical problem that the user used.
In order to achieve the above object, an embodiment of the present invention provides an automatic door with an FMCW microwave sensor, which includes an automatic door host, a motor, a transmission belt, and a movable door leaf, and further includes an FMCW microwave sensor, where the FMCW microwave sensor includes a signal processing module and a microwave module, the signal processing module is connected to the automatic door host, and the microwave module is connected to the signal processing module; wherein, the microwave module includes:
the signal filtering and amplifying module is connected with the signal processing module;
the high-frequency module is connected with the signal filtering and amplifying module;
the antenna module is connected with the high-frequency module.
Optionally, the high frequency module includes an oscillator, a frequency modulator, and a mixer, where the frequency modulator is connected to the oscillator and the antenna module, and the mixer is connected to the frequency modulator and the antenna module.
Optionally, the antenna module includes a transmitting antenna and a receiving antenna, the transmitting antenna is connected to the frequency modulator, and the receiving antenna is connected to the frequency mixer.
Optionally, the high frequency module includes an oscillator, a frequency modulator, and a mixer set, where the frequency modulator is connected to the oscillator and the antenna module, and the mixer set is connected to the frequency modulator and the antenna module.
Optionally, the antenna module includes a transmitting antenna group and a receiving antenna group, the transmitting antenna group is connected to the frequency modulator group, and the receiving antenna group is connected to the frequency mixer group.
Optionally, the transmitting antenna group includes one transmitting antenna, the receiving antenna group includes two receiving antennas, two receiving antennas are arranged in parallel, and the transmitting antenna is arranged above the two receiving antennas.
Optionally, the signal processing module includes an AD converter, a signal processor, an output module, and an indication module, the AD converter is connected to the signal filter amplifier, the signal processor is connected to the AD converter, and the output module and the indication module are both connected to the signal processor.
Optionally, the automatic door host includes a receiving module, a host processor, a motor driver and a transformer, the receiving module is connected to the output module, the host processor is connected to the receiving module, the motor driver is connected to the motor, and the transformer is connected to the receiving module, the host processor and the motor driver.
The embodiment of the utility model provides an above-mentioned one or more technical scheme in the automatically-controlled door with FMCW microwave inductor have one of following technological effect at least:
the utility model discloses a set up FMCW microwave inductor to make FMCW microwave inductor with the automatically-controlled door host computer is connected, sets up simultaneously signal filtering amplifies the module high frequency module with the antenna module, and make signal filtering amplifies the module with the signal processing module is connected, makes the high frequency module with signal filtering amplifies the module and connects, compares prior art, and this application is through addding the frequency modulator carries out frequency modulation and then makes the antenna module sends the electromagnetic wave through frequency modulation to whether have the personnel to come in and go out in the detection zone of accurate detection automatically-controlled door, and then carry out accurate control to the automatically-controlled door and open and shut, promote the security performance of automatically-controlled door, promote user experience.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic overall structure diagram of an automatic door with an FMCW microwave sensor according to an embodiment of the present invention;
fig. 2 is a block diagram of an FMCW microwave sensor according to an embodiment of the present invention;
fig. 3 is a block diagram illustrating a microwave module of an FMCW microwave sensor according to an embodiment of the present invention;
fig. 4 is a block diagram of a microwave module of an FMCW microwave sensor according to another embodiment of the present invention;
fig. 5 is a block diagram of a microwave module of an FMCW microwave sensor according to a third embodiment of the present invention;
fig. 6 is a combined view of the relative position of the antenna module and the projection view after detecting the object according to an embodiment of the present invention;
fig. 7 is a block diagram of an FMCW microwave sensor according to another embodiment of the present invention;
fig. 8 is a block diagram of an automatic door host according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of the embodiment of the present invention when the reflected electromagnetic wave is reflected to the receiving antenna.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically connected or connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
In an embodiment of the present invention, as shown in fig. 1-3, an automatic door with an FMCW microwave sensor is provided, which includes an automatic door main frame, a motor, a transmission belt, a movable door leaf, and an FMCW microwave sensor, wherein the FMCW microwave sensor includes a signal processing module and a microwave module, the signal processing module is connected to the automatic door main frame, and the microwave module is connected to the signal processing module; the microwave module comprises a signal filtering and amplifying module, a high-frequency module and an antenna module.
The signal filtering and amplifying module is connected with the signal processing module;
the high-frequency module is connected with the signal filtering and amplifying module;
the antenna module is connected with the high-frequency module.
The utility model discloses a set up FMCW microwave inductor to make FMCW microwave inductor with the automatically-controlled door host computer is connected, sets up simultaneously signal filtering amplifies the module high frequency module with the antenna module, and make signal filtering amplifies the module with the signal processing module is connected, makes the high frequency module with signal filtering amplifies the module and connects, compares prior art, and this application is through addding the frequency modulator carries out frequency modulation and then makes the antenna module sends the electromagnetic wave through frequency modulation to whether have the personnel to come in and go out in the detection zone of accurate detection automatically-controlled door, and then carry out accurate control to the automatically-controlled door and open and shut, promote the security performance of automatically-controlled door, promote user experience.
In another embodiment of the present invention, as shown in fig. 4, the high frequency module includes an oscillator, a frequency modulator and a frequency mixer, the frequency modulator is connected to the oscillator and the antenna module, and the frequency mixer is connected to the frequency modulator and the antenna module.
Specifically, the oscillator is used to generate a fixed frequency, and then the frequency modulator is continuously frequency-modulated by the fixed frequency to generate a frequency-modulated continuous wave. The frequency modulated continuous wave may be a triangular wave, a sawtooth wave, or other continuous waves having a predetermined period and bandwidth.
Furthermore, the period and the bandwidth of the frequency modulated continuous wave are preset by a person skilled in the art, and after the period and the bandwidth of the frequency modulated continuous wave are preset, the frequency of the transmitted wave is modulated at a fixed frequency, so that the electromagnetic wave is transmitted into the detection area of the automatic door through the antenna module in a frequency scanning manner.
Specifically, if the transmission frequency is F1 at time t1, the transmission frequency is modulated at a predetermined fixed frequency at the next time, so that the transmission frequency is F2 at time t 2. The frequencies of the transmitted wave F1 and the transmitted wave F2 are different.
In another embodiment of the present invention, the antenna module includes a transmitting antenna and a receiving antenna, the transmitting antenna is connected to the frequency modulator, and the receiving antenna is connected to the frequency mixer.
Specifically, in the present embodiment, at time t1, a transmission electromagnetic wave with a frequency f1 is continuously transmitted into the detection area of the automatic door through the transmission antenna, and the transmission electromagnetic wave is a transmission electromagnetic wave. After the emitted electromagnetic wave is emitted, the electromagnetic wave is reflected after encountering a measured object in the detection area of the automatic door, and at the time t2, the reflected electromagnetic wave is received by the receiving antenna. The frequency of the reflected electromagnetic wave is also f 1. At this time, since the frequency of the transmitted wave is continuously modulated, the frequency of the transmitted wave is modulated to f2 after the time t1 to t2 is swept.
Specifically, a cycle of a mixing frequency modulation wave is obtained when a transmission electromagnetic wave is emitted to a reflected electromagnetic wave and received by the receiving antenna, and the received reflected electromagnetic wave is received. There are a number of such cycles over time as the automatic door operates. In each cycle, a transmitted electromagnetic wave, a reflected electromagnetic wave, and a mixed frequency modulated wave are acquired. If the transmitted electromagnetic wave, the reflected electromagnetic wave and the mixed frequency modulation wave in one cycle period form a group of data, a plurality of groups of data are continuously acquired in the continuous work of the automatic door.
After obtaining a transmitting electromagnetic wave, a reflecting electromagnetic wave and a mixing frequency modulation wave, the mixer mixes the mixing frequency modulation wave with the corresponding reflecting electromagnetic wave to obtain an intermediate frequency signal.
Specifically, when the frequency of the mixed frequency modulation wave is f2 and the frequency of the reflected electromagnetic wave is f1, after mixing, the frequency Δ f of the intermediate frequency signal is the difference between the frequency of the current mixed frequency modulation wave and the frequency of the reflected electromagnetic wave, that is, Δ f ═ f1-f2|。
And then, the intermediate frequency signal is filtered and amplified by the signal filter amplifier and then transmitted to a signal processing module, and the signal processing module is used for processing the signal.
Specifically, the signal processing process performed by the signal processing module is appropriately programmed by those skilled in the art according to actual needs as follows:
firstly, the signal processing module acquires frequency spectrum information of each intermediate frequency signal; each frequency spectrum information comprises N frequency points;
and acquiring the frequency spectrum information of each intermediate frequency signal so as to facilitate subsequent information processing and analysis. Specifically, the spectral information includes frequency information, amplitude information, and phase information.
Then, acquiring frequency point amplitude information and frequency point distance information corresponding to each frequency point according to each frequency spectrum information; each frequency point in each frequency spectrum information corresponds to one frequency point amplitude information and one frequency point distance information;
specifically, frequency point amplitude information and frequency point distance information corresponding to each frequency point are obtained by obtaining each frequency spectrum information, so that a one-to-one correspondence relationship between the amplitudes and distances of the same frequency points is established. That is, one amplitude information corresponding to one frequency point in the frequency spectrum corresponds to one distance information. Compared with the prior art, under the condition that one amplitude corresponds to a plurality of distances, the method and the device realize that one amplitude corresponds to one distance on the basis of the acquired frequency spectrum information, improve the controllable precision in the automatic door detection process, greatly improve the user experience, and have high practicability and commercial value.
Then, obtaining the distance information of the dynamic measured object in the detection area of the automatic door according to the frequency point amplitude information and the frequency point distance information in each frequency spectrum information;
and after the one-to-one correspondence relationship between the amplitude and the distance is established, the static measured object and the dynamic measured object in the detection area of the automatic door can be judged, and the static measured object is filtered to obtain the dynamic measured object. And then, acquiring the distance information of the dynamic measured object.
And finally, controlling the automatic door to be opened or closed through the signal processing module according to the distance information of the dynamic measured object in the detection area of the automatic door.
In this embodiment, the signal processing process is implemented by a signal processor in the signal processing module.
Further, the distance information of the dynamic measured object in the detection area of the automatic door is obtained through the following steps:
(1) extracting frequency point amplitude information of frequency points with the same sequence number in the frequency spectrum information;
specifically, the distance information of the frequency points is changed correspondingly through the frequency point amplitude information of the frequency points with the same sequence number in the frequency spectrum information. It can also be understood that the frequency point amplitude information of a sequence number frequency point corresponds to a distance value.
(2) Judging whether frequency point amplitude information of frequency points with the same sequence number in the frequency spectrum information changes or not;
specifically, it is determined whether frequency point amplitude information of frequency points with the same sequence number in each of the spectrum information changes, that is, it is determined whether there is a dynamic object to be measured at different time points and at the same distance point.
(3) If the judgment result is yes, extracting the frequency point distance information corresponding to the changed frequency point amplitude information, and recording the frequency point distance information as the distance information of the dynamic measured object in the detection area of the automatic door.
And if so, judging that the frequency point amplitude information of the frequency points with the same sequence number in the frequency spectrum information changes.
Specifically, at time t3, the frequency bin with sequence number 1 has amplitude X. At the time t4, the amplitude of the frequency point with the sequence number of 1 is Y, and the amplitude information corresponding to the frequency point with the sequence number of 1 changes, which means that a dynamic measured object appears at the distance point corresponding to the amplitude information at this time.
And then, extracting the frequency point distance information corresponding to the changed frequency point amplitude information, namely obtaining the distance information of the dynamic measured object.
Further, the specific process of obtaining the intermediate frequency signal by mixing the mixing frequency modulation wave with the corresponding reflected electromagnetic wave by the mixer is as follows:
firstly, converting the intermediate frequency signal into a digital intermediate frequency signal;
then, converting the digital intermediate frequency signal into a frequency domain intermediate frequency signal through Fourier transform;
specifically, the digital intermediate frequency signal is a time domain signal, and the time domain signal is converted into a frequency domain signal through fourier transform.
And during Fourier transform, setting the number of sampling points in a sampling period to be N and the sampling frequency to be F aiming at the digital intermediate frequency signal.
And then, acquiring the frequency spectrum information according to the frequency domain intermediate frequency signal. Specifically, the corresponding spectrum information can be obtained through the frequency domain intermediate frequency signal.
The frequency point amplitude information is obtained by calculation through the following formula:
due to the symmetry of the frequency spectrum, only the first N/2 frequency points need to be subjected to data analysis, wherein An is frequency point amplitude information, N is the serial number of the corresponding frequency point in the frequency spectrum, N is the sampling point number of the sampling period in Fourier transform, and xnReal part information corresponding to frequency point with sequence number n，ynAnd the imaginary part information is corresponding to the frequency point with the serial number n.
Specifically, when performing fourier transform, setting the number of sampling points in a sampling period to be N, and after the sampling frequency is F, and performing fourier computation, obtaining frequency spectrum information including N frequency points, which are marked as 0, 1, 2.. N; where n represents the number of the bins. Each frequency point in the frequency spectrum correspondingly has real part information xnAnd imaginary information yn。
Further, the frequency point with the number n is pnIs indicated, in particular, pnThe frequency is calculated by
The phase is calculated as alphan＝arctan(yn/xn) (ii) a The amplitude calculation formula corresponding to different frequency points is as follows, specifically, the serial number is
Frequency point pnThe calculation formula is as follows:
for a frequency point p with the number n (n equals 0)nThe calculation formula is as follows:
in another embodiment of the present invention, the frequency point distance information is calculated by the following formula:
wherein d isnThe method comprises the following steps of (1) obtaining frequency point distance information, c representing the light speed, N representing the serial number of a corresponding frequency point in a frequency spectrum, F representing the sampling frequency, k representing the frequency modulation slope of a frequency modulation continuous wave, and N representing the number of sampling points;
the frequency modulation slope k is calculated by the period T and the bandwidth B of the frequency modulation continuous wave, and if the frequency modulation continuous wave is a sawtooth wave, the expression of the slope k of the frequency modulation continuous wave is as follows: k is B/T; if the frequency modulated continuous wave is a triangular wave, the expression of the slope k of the frequency modulated continuous wave is as follows: k is 2B/T.
Specifically, taking the transmitted electromagnetic wave f1, the reflected electromagnetic wave f1 and the mixing frequency modulation wave f2 obtained in one cycle of the operation of the automatic door as an example, the following formula is derived:
firstly, the preset frequency modulation continuous wave has the period of T and the bandwidth of B. If the frequency modulated continuous wave is a sawtooth wave, the expression of the slope k of the frequency modulated continuous wave is as follows: k is B/T; if the frequency modulated continuous wave is a triangular wave, the expression of the slope k of the frequency modulated continuous wave is as follows: k is 2B/T.
Next, in a time period in which the frequency modulation continuous wave is changed from f1 to f2, a time t elapses, and the frequency change amount is: Δ f ═ f1-f2L. That is, the frequency is changed by Δ f in the period t, so an expression can be obtained
Specifically, the propagation speed of the electromagnetic wave is the speed of light c, so that the path of propagation of the electromagnetic wave is s ═ ct in time t. The distance of the measured object is half of the propagation path of the electromagnetic wave, so the following deduction can be made:
where c is the speed of light, Δ f is the frequency of the intermediate frequency signal, and k is the chirp rate of the chirped wave.
Specifically, the speed of light is known, T, B and the modulation waveform is pre-defined, so the chirp slope k is also known. Therefore, based on the FMCW principle, when the frequency Δ f of the intermediate frequency signal is known, the actual distance of the measured object can be calculated by the above formula.
Further according to the formula
And formulas
After Fourier transformation, the frequency point p with the serial number nnThe distance information represented is:
therefore, the distance information corresponding to each frequency point in the frequency spectrum information is obtained through calculation, and subsequent data processing and accurate control of the automatic door are facilitated.
In another embodiment of the present invention, as shown in fig. 5, the high frequency module includes an oscillator, a frequency modulator and a mixer set, the frequency modulator is connected to the oscillator and the antenna module, and the mixer set is connected to the frequency modulator and the antenna module.
The antenna module comprises a transmitting antenna group and a receiving antenna group, the transmitting antenna group is connected with the frequency modulator group, and the receiving antenna group is connected with the frequency mixer group. In this embodiment, the transmitting antenna group and the receiving antenna group are configured to cooperate with the mixer group for use, so as to realize simultaneous reception and transmission of multiple groups of signals, and improve the accuracy of automatic door control.
In another embodiment of the present invention, as shown in fig. 6, the transmitting antenna set includes a transmitting antenna, the receiving antenna set includes two receiving antennas, two receiving antennas are arranged in parallel, and the transmitting antenna is arranged above the two receiving antennas.
Specifically, in this embodiment, when the two receiving antennas are arranged in parallel, the transmitting antenna is arranged above the side of the two receiving antennas. As shown in fig. 6, the angular information of the projection of the object to be measured on the XZ plane can be detected by the FMCW microwave sensor.
Further, the distance between the two receiving antennas is R, the angle of the object to be measured is θ, as shown in fig. 9, when the planar angle information between the object to be measured and the FMCW microwave sensor is obtained according to the first frequency spectrum information and the second frequency spectrum information, the obtained angle information is more accurate, so that accurate data support and basis are provided for subsequently controlling the automatic door, and the accuracy of controlling the automatic door is improved.
Because the number of the receiving antennas is two, the number of the electromagnetic waves received by the two receiving antennas is two, and the mixer group mixes the frequency mixing frequency modulation wave with the reflected electromagnetic waves received by the two receiving antennas to respectively obtain a first intermediate frequency signal and a second intermediate frequency signal;
the processing of the first intermediate frequency signal and the second intermediate frequency signal to obtain the corresponding spectrum information is the same as that described in the above embodiments, and it should be understood and appreciated by those skilled in the art, so that the detailed description of this portion is omitted here.
Further, after the two pieces of frequency spectrum information are acquired, the plane angle information of the object to be measured and the FMCW microwave sensor can be acquired according to the frequency spectrum information, and specifically, the two pieces of frequency spectrum information are the first frequency spectrum information and the second frequency spectrum information respectively.
Further, the method for acquiring the plane angle information of the object to be measured and the FMCW microwave sensor by the signal processor is as follows:
acquiring the plane angle information of the measured object and the FMCW microwave sensor by the following formula:
wherein theta is the plane angle information of the object to be measured and the FMCW microwave sensor, F0Frequency of center frequency of transmission of FMCW microwave inductor, c speed of light, Delta alphanR is the linear distance of the antenna.
Wherein, Delta alphanThe calculation method of (2) is as follows: in the first spectrum information, the frequency point is panHaving a phase of alphaan＝arctan(yan/xan) (ii) a The following can be obtained after the formula is changed:
similarly, in the second spectrum information, the frequency point pbnOf phase a thereofbn＝arctan(ybn/xbn) (ii) a The following can be obtained after the formula is changed:
therefore, for a frequency point with a sequence number n, a calculation formula of a phase difference between the first spectrum information and the second spectrum information is as follows: delta alphan＝αan-αbn；
According to the trigonometric formula
Therefore, it can be seen that:
therefore, it can be obtained: delta alphan＝arctan((yanxbn-xanybn)/(xanxbn+yanybn))；
F0And R is preset by one skilled in the art, i.e., is a known quantity, and thus is obtained without calculation.
Further, in the utility model discloses a in another embodiment, by the appropriate setting of skilled person in the art behind the placing means of antenna group, when realizing that the FMCW microwave inductor who acquires detects the angle information of the measured object projection on the XZ plane for horizontal plane angle information, can judge that the user is the walking of straight orientation automatically-controlled door for the center of automatically-controlled door, still walk on the left of automatically-controlled door partially or automatically-controlled door partially right, can be with the basis the actual direction of motion of measured object is judged to horizontal plane angle information.
Further, in another embodiment of the present invention, after the placing mode of the antenna group is properly set by a person skilled in the art, when the obtained angle information of the projection of the object to be measured on the XZ plane detected by the FMCW microwave sensor is the vertical plane angle information, the actual height information of the object to be measured can be detected according to the vertical plane angle information.
By setting the plane angle information as the vertical plane angle information, the automatic door can filter interference signals brought by the movable door leaf of the automatic door in the moving process in the operation process. Because of the vertical angle of the movable door leaf of the automatic door is very large, and the user walks from a far place to trigger the walking process of the automatic door, the angle is relatively small, and then the movable door leaf is very easy to distinguish from an action signal generated in the moving process, therefore, the misoperation caused by the movable door leaf can be greatly reduced, the frequent self-excitation of the automatic door is avoided, and even the problem of not closing the automatic door is avoided, the accuracy of the opening and closing control of the automatic door is further improved, the problem that the user is accidentally injured by the automatic door due to inaccurate control is also avoided, and the safety performance in the opening and closing control process of the automatic door is improved.
Of course, the comprehensive setting of the vertical plane information and the horizontal plane information can also be realized, and the three-dimensional effect detection can be realized, which is set by the technical personnel in the field according to the actual requirement, and the application is not limited specifically.
In another embodiment of the present invention, as shown in fig. 7, the signal processing module includes an AD converter, a signal processor, an output module and an indication module, the AD converter is connected to the signal filter amplifier, the signal processor is connected to the AD converter, and the output module and the indication module are connected to the signal processor.
Specifically, the AD converter is configured to perform analog-to-digital conversion processing on the amplified intermediate frequency signal, and the signal processor is configured to perform the signal processing procedure. The output module is used for outputting the signal processed by the signal processor to the automatic door host. The indicating module is used for triggering indication, for example, the indicating module can be set to be an LED, and the LED lamp is turned on for 1s every time when a person triggers the sensing.
In another embodiment of the present invention, as shown in fig. 8, the automatic door host includes a receiving module, a host processor, a motor driver and a transformer, the receiving module is connected to the output module, the host processor is connected to the receiving module, the motor driver is connected to the motor, and the transformer is connected to the receiving module, the host processor and the motor driver.
Specifically, the receiving module is used for receiving the signal output by the output module. The host processor is used for processing the signals received by the receiving module, and controlling the motor driver to drive the motor, so that the motor drives the belt to move, and the belt drives the movable door leaf to move, thereby realizing the opening and closing of the automatic door.
It should be noted that, the present application aims to protect the structure, and those skilled in the art should be able to perform software programming by themselves, that is, be able to perform appropriate transformation according to the fourier transform principle, so as to implement the corresponding control function in the present application. In addition, the software control part is not the protection focus of the present application, so the detailed description of the part is omitted.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. An automatic door with an FMCW microwave inductor comprises an automatic door host, a motor, a transmission belt and a movable door leaf which are sequentially connected, and is characterized by further comprising the FMCW microwave inductor, wherein the FMCW microwave inductor comprises a signal processing module and a microwave module, the signal processing module is connected with the automatic door host, and the microwave module is connected with the signal processing module; wherein, the microwave module includes:
the signal filtering and amplifying module is connected with the signal processing module;
the high-frequency module is connected with the signal filtering and amplifying module;
the antenna module is connected with the high-frequency module.
2. The automatic door with an FMCW microwave sensor of claim 1, wherein the high frequency module includes an oscillator, a frequency modulator and a mixer, the frequency modulator coupled to the oscillator and the antenna module, the mixer coupled to the frequency modulator and the antenna module.
3. The automatic door with an FMCW microwave sensor of claim 2, wherein the antenna module includes a transmitting antenna and a receiving antenna, the transmitting antenna is connected to the frequency modulator and the receiving antenna is connected to the mixer.
4. The automatic door with an FMCW microwave inductor according to claim 1, wherein the high frequency module includes an oscillator, a frequency modulator and a mixer set, the frequency modulator is connected with the oscillator and the antenna module, and the mixer set is connected with the frequency modulator and the antenna module.
5. The automatic door with FMCW microwave sensor of claim 4, wherein said antenna module includes a set of transmit antennas and a set of receive antennas, said set of transmit antennas being coupled to said set of frequency modulators, said set of receive antennas being coupled to said set of mixers.
6. The automatic door with FMCW microwave sensor of claim 5, wherein said set of transmit antennas includes one transmit antenna, said set of receive antennas includes two receive antennas, two of said receivers are disposed in parallel, and said transmit antenna is disposed above two of said receive antennas.
7. The automatic door with FMCW microwave sensor of any one of claims 1-5, wherein the signal processing module includes an AD converter, a signal processor, an output module and an indication module, the AD converter is connected to the signal filter amplifier, the signal processor is connected to the AD converter, and the output module and the indication module are connected to the signal processor.
8. The automatic door with an FMCW microwave sensor of claim 7, wherein the automatic door host includes a receive module, a host processor, a motor driver and a transformer, the receive module is coupled to the output module, the host processor is coupled to the receive module, the motor driver is coupled to the motor, and the transformer is coupled to the receive module, the host processor and the motor driver.
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| CN202023061180.4U CN214041729U (en) | 2020-12-17 | 2020-12-17 | Automatic door with FMCW microwave inductor |
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| CN202023061180.4U CN214041729U (en) | 2020-12-17 | 2020-12-17 | Automatic door with FMCW microwave inductor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700412A (en) * | 2021-08-28 | 2021-11-26 | 广东蓝水花智能电子有限公司 | Microwave vision double-technology sensor, automatic door and automatic door control method |
| CN114019835A (en) * | 2021-11-09 | 2022-02-08 | 深圳市雪球科技有限公司 | Automatic door opening method and system, electronic device and storage medium |
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2020
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700412A (en) * | 2021-08-28 | 2021-11-26 | 广东蓝水花智能电子有限公司 | Microwave vision double-technology sensor, automatic door and automatic door control method |
| CN114019835A (en) * | 2021-11-09 | 2022-02-08 | 深圳市雪球科技有限公司 | Automatic door opening method and system, electronic device and storage medium |
| CN114019835B (en) * | 2021-11-09 | 2023-09-26 | 深圳市雪球科技有限公司 | Automatic door opening method and system, electronic equipment and storage medium |
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