CN113484927A - Target detection method, system and computer readable storage medium - Google Patents
Target detection method, system and computer readable storage medium Download PDFInfo
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Abstract
The application provides a target detection method, which is applied to a target detection system, wherein the target detection system comprises: a first device and a second device, the first device comprising: the first signal receiving device, the first signal transmitting device, the second apparatus includes: the second signal receiving device and the second signal transmitting device, the method comprises the following steps: in a first time period, the first signal transmitting device transmits a first signal, the second signal receiving device is used for receiving the first signal, the first signal receiving device stops receiving the signal, and the second signal transmitting device stops transmitting the signal; in a second time period, the second signal transmitting device transmits a second signal, the first signal receiving device is used for receiving the second signal, the second signal receiving device stops receiving the signal, and the first signal transmitting device stops transmitting the signal; and determining whether a detection target passes through according to the detection result in the first time period and the detection result in the second time period. The method provided by the application can avoid signal self-interference.
Description
Technical Field
The present application relates to a target detection method, a target detection system and a computer-readable storage medium.
Background
The infrared correlation sensor comprises a transmitter and a receiver, the infrared transmitter and the infrared receiver are usually respectively fixed on two sides of a monitored channel such as a road, a passageway, an entrance and an exit, when an infrared light beam passing through the detection channel is blocked by a passing pedestrian and a passing vehicle, the receiving component detects the interruption of an infrared signal and outputs a signal representing the occurrence of shielding.
However, since the infrared transmitting tube and the infrared receiving tube of the same device are installed on the same physical structure, the infrared light signal transmitted by the infrared transmitting tube may be transmitted to the infrared receiving head of the device where the device is located due to scattering, reflection, diffraction and other modes, that is, the infrared receiving tube of the device receives the infrared light signal transmitted by the infrared transmitting tube of the device, which causes a self-interference problem.
Disclosure of Invention
The embodiment of the application provides a target detection method, a target detection system and a computer-readable storage medium, which can solve the problem of signal self-interference of detection equipment under the same physical structure and improve target detection precision.
In a first aspect, a target detection method is provided, where the method is applied to a target detection system, and the target detection system includes: first equipment and second equipment, first equipment and the relative setting of second equipment, first equipment includes: the first signal receiving device, the first signal transmitting device, the second apparatus includes: the second signal receiving device and the second signal transmitting device, the method comprises the following steps: in a first time period, the first signal transmitting device transmits a first signal, the second signal receiving device is used for receiving the first signal, the first signal receiving device stops receiving the signal, and the second signal transmitting device stops transmitting the signal; in a second time period, the second signal transmitting device transmits a second signal, the first signal receiving device is used for receiving the second signal, the second signal receiving device stops receiving the signal, and the first signal transmitting device stops transmitting the signal; and determining whether a detection target passes through according to the detection result in the first time period and the detection result in the second time period.
The method provided by the first aspect, during the first time period, when the first signal transmitting device is transmitting the first signal, the second signal transmitting device stops transmitting the signal, the first signal receiving device stops receiving the signal, and the second signal receiving device can receive the signal; in the second time period, when the second signal transmitting device transmits the second signal, the first signal transmitting device stops transmitting the signal, the second signal receiving device stops receiving the signal, and the first signal receiving device can receive the signal.
Optionally, determining whether a detection target passes through according to the detection result in the first time period and the detection result in the second time period, including: and in the first time period, when the second signal receiving device receives the first signal and in the second time period, the first signal receiving device receives the second signal, the detection target is determined to pass through. In this implementation manner, the passing of the detection target may be determined according to the detection result of the first time period and the detection result of the second time period, and this determination manner is not limited in this embodiment of the application.
Optionally, in the first time period, when the second signal receiving apparatus does not receive the first signal, and in the second time period, the first signal receiving apparatus does not receive the second signal, it is determined that the detection target does not pass. In this implementation manner, it can be determined that no detection target passes through according to the detection result of the first time period and the detection result of the second time period, and this determination method is not limited in this embodiment of the application.
Optionally, before the first signal transmitting device transmits the first signal, determining whether the second signal receiving device allows receiving the first signal; the first signal transmitting means transmits the first signal when the second signal receiving means can receive the first signal. In this implementation, when it is determined that the second signal receiving apparatus can receive the first signal, the first signal is sent again, which ensures that the signal transmitted by the first signal transmitting apparatus can be received by the second signal receiving apparatus.
Optionally, the first signal transmitting device and the second signal transmitting device alternately transmit the first signal and the second signal according to a preset time sequence, where the preset time sequence is used to indicate an order of transmitting the first signal and the second signal. In this implementation, the first signal and the second signal may be transmitted with a preset timing sequence according to specific situations and scenarios.
Optionally, the duration of the first time period and/or the duration of the second time period is adjusted according to the model of the first signal receiving device and the model of the second signal receiving device. In this implementation manner, since the first signal receiving device and the second signal receiving device are different in model, after the receiving tube receives the infrared light, the decoding time is different, and therefore, the first time period and the second time period can be adjusted according to the specific model.
In a second aspect, there is provided an apparatus comprising means for performing the steps of the above first aspect or any possible implementation manner of the first aspect.
In a third aspect, an apparatus is provided that comprises at least one processor and a memory, the at least one processor being configured to perform the method of the first aspect above or any possible implementation manner of the first aspect.
In a fourth aspect, an apparatus is provided that comprises at least one processor configured to perform the method of the first aspect above or any possible implementation manner of the first aspect, and an interface circuit.
In a fifth aspect, there is provided an object detection system, the system comprising a first device and a second device, the first device comprising: the first signal receiving device, the first signal transmitting device, the second apparatus includes: a second signal receiving device, a second signal transmitting device, and any one of the signal transmitting devices provided in the second aspect, the third aspect, or the fourth aspect.
Optionally, the first device may be a first infrared correlation sensor, and the second device may be a second infrared correlation sensor.
Optionally, the first signal receiving device may be a first infrared receiving tube, the first signal transmitting device may be a first infrared transmitting tube, the second signal receiving device may be a second infrared receiving tube, and the second signal transmitting device may be a second infrared transmitting tube.
A sixth aspect provides a computer program product comprising a computer program for performing the method of the first aspect or any possible implementation form of the first aspect when executed by a processor.
In a seventh aspect, a computer-readable storage medium is provided, in which a computer program is stored, which, when executed, is adapted to perform the method of the first aspect or any possible implementation manner of the first aspect.
In an eighth aspect, there is provided a chip or an integrated circuit, comprising: a processor configured to invoke and run the computer program from the memory, so that the device on which the chip or the integrated circuit is installed performs the method of the first aspect or any possible implementation manner of the first aspect.
It is understood that the beneficial effects of the second aspect to the eighth aspect can be referred to the related description of the first aspect, and are not described herein again.
Compared with the prior art, the embodiment of the application has the advantages that:
in the method, in a first time period, when a first signal transmitting device transmits a first signal, a second signal transmitting device stops transmitting the signal, a first signal receiving device stops receiving the signal, and a second signal receiving device can receive the signal; in the second time period, when the second signal transmitting device transmits the second signal, the first signal transmitting device stops transmitting the signal, the second signal receiving device stops receiving the signal, and the first signal receiving device can receive the signal.
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In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic view of a road inspection vehicle provided in an embodiment of the present application;
FIG. 2 is a schematic diagram of the principles of an infrared correlation detection vehicle provided by an embodiment of the present application;
FIG. 3 is a schematic diagram of an object detection system provided by an embodiment of the present application;
FIG. 4 is a flowchart of a target detection method provided by an embodiment of the present application;
FIG. 5 is a timing diagram of signal transmission and reception provided by an embodiment of the present application;
fig. 6 is a schematic diagram of an infrared correlation sensor provided in an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
First, before describing the methods and systems provided herein, some of the terms that will be referred to immediately below will need to be described. When the present application refers to the terms "first" or "second" etc. ordinal, it should be understood that they are used for distinguishing purposes only, unless they do express an order in accordance with the context.
The terms "exemplary" or "such as" are used herein to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
Unless otherwise indicated, "/" herein generally indicates that the former and latter associated objects are in an "or" relationship, e.g., a/B may represent a or B. The term "and/or" is merely an associative relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the present application, "a plurality" means two or more.
Currently, infrared correlation sensors are used to detect vehicles or pedestrians on a road. Fig. 1 shows a schematic road detection diagram provided in an embodiment of the present application. As shown in fig. 1, the two detection devices are respectively and oppositely arranged on two sides of the road. Whether vehicles pass through the road can be detected through the device A and the device B.
Fig. 2 shows a schematic diagram illustrating a principle that an infrared correlation sensor provided in an embodiment of the present application detects whether a vehicle passes through. As shown in fig. 2, when no vehicle passes A, B between the two devices, the infrared transmitting tube of the device a transmits an infrared light signal, and the infrared receiving tube of the device B receives the infrared light signal transmitted by the device a, at which time the voltage at the signal output pin of the infrared receiving tube of the device B is at a low level.
Similarly, the infrared transmitting tube of the device B transmits an infrared light signal, the infrared receiving tube of the device a receives the infrared light signal transmitted by the device B, and at this time, the voltage at the signal output pin of the infrared receiving tube of the device a is at a low level.
When a vehicle passes between A, B two devices, the infrared transmitting tube of the device A transmits infrared light signals, and the infrared receiving tube of the device B cannot receive the infrared light signals transmitted by the device A because the vehicle obstructs the transmission of the infrared light signals, and at the moment, the voltage at the signal output pin of the infrared receiving tube of the device B is at a high level.
Similarly, when a vehicle passes between A, B two devices, the infrared transmitting tube of the device B transmits an infrared light signal, and since the vehicle obstructs transmission of the infrared light signal, the infrared receiving tube of the device a cannot receive the infrared light signal transmitted by the device B, and at this time, the voltage at the signal output pin of the infrared receiving tube of the device a is at a high level.
It should be noted that, the output pins of the infrared signal receiving tube of the A, B device are respectively connected to a Micro Controller Unit (MCU) disposed on the A, B device, so that the MCU can determine whether a vehicle passes through by detecting the state change of the output pins of the infrared signal receiving tube.
It can be understood that when the voltage at the signal output pin of the infrared receiving tube of the A, B device is all low level, no vehicle is judged to pass through. When the voltage at the signal output pin of the infrared receiving tube of the A, B equipment is all high level, it is judged that a vehicle passes through.
The following describes problems of the infrared correlation sensor in practical application.
As can be seen from fig. 2, the ir transmitting tube and the ir receiving tube of the A, B device are both mounted on the same physical structure, so that when the ir transmitting tube of the A, B device simultaneously transmits ir signals, the signals are transmitted to the ir receiving head of the device where the ir transmitting tube is located due to scattering, reflection, diffraction, etc.
In other words, the infrared signal received by the infrared receiving tube of the device a may be an infrared signal emitted by the infrared transmitting tube of the device itself, and may also be an infrared signal emitted by the device B. At this time, the specific source of the infrared light signal cannot be determined, i.e., the problem of signal self-interference is generated.
In this case, even if there is a vehicle stopped between the two devices, A, B the infrared receiving tubes of the two devices can receive the infrared signal transmitted from the infrared transmitting tube of their own device although the infrared signal transmitted from the opposite infrared transmitting tube is not received, and the voltage of the signal input pin of the infrared receiving tube is still at a low level. The vehicle is judged to be not passing by mistake, and obviously does not accord with the actual situation.
For the existing problems, the solution in the related art is as follows:
the first solution is: some physical structural isolation is performed to isolate the transmission light path from the infrared transmitting tube to the infrared receiving tube in the device A or the device B, but the solution cannot completely isolate light path signals, and the isolation effect is not ideal.
The second solution is: the infrared transmitting tube of the device A is removed and only the infrared receiving tube is left, and the infrared receiving tube of the device B is removed and only the infrared transmitting tube is left. Thus, when a vehicle passes through the side of the device A, the detected result is transmitted to the side of the device B in some way. Thus, the A, B device can detect whether a car passes by. This solution requires the addition of a detection result transmission module, which increases the cost.
In view of the foregoing, the present application provides a target detection method, which disables a device B from transmitting a signal while the device a is transmitting a signal and also disables the device a from receiving a signal and enables the device B to receive a signal during a first time period, where the device B can only receive the signal transmitted by the device a. By the method, the first signal transmitting device of the device A and the first signal receiving device of the device B can work simultaneously in the first time period, so that the problem that the device A and the device B send signals simultaneously and receive the signals simultaneously to generate signal self-interference is avoided, and a more accurate detection result is obtained.
The following describes the target detection method provided in the present application with reference to specific examples. First, the object detection system provided in the present application is introduced.
Fig. 3 shows a schematic diagram of an object detection system provided in an embodiment of the present application. As shown in fig. 3, the object detection system includes: a first device 310 and a second device 320, the first device 310 comprising first signal transmitting means 3101 and first signal receiving means 3102; the second device 320 includes a second signal transmitting apparatus 3201 and a second signal receiving apparatus 3202.
It is to be understood that the first signal transmitting apparatus 3101 of the first device 310 may transmit a first signal and the second signal receiving apparatus 3202 of the second device may receive the first signal during a first time period, and the second signal transmitting apparatus 3201 may transmit a second signal and the first signal receiving apparatus 3102 may receive the second signal during a second time period.
The first time period and the second time period are set according to the timing. Of course, the second signal may also be transmitted in the first time period, and the first signal may also be transmitted in the second time period, which is not limited in the embodiment of the present application.
In one embodiment, when the first signal receiving device 3102 receives the second signal and when the second signal receiving device 3202 receives the first signal, the output pin of the first signal receiving device 3102 becomes low and the output pin of the second signal receiving device 3202 becomes low, it can be determined that there is a vehicle passing through the road.
In another embodiment, when the first signal receiving device 3102 does not receive the second signal, and when the second signal receiving device 3202 does not receive the first signal, the output pin of the first signal receiving device 3102 becomes high level, and the output pin of the second signal receiving device 3202 becomes high level, it can be determined that no vehicle passes through the road.
In one embodiment, the first device 310 may be a first infrared correlation sensor, the first signal emitting apparatus 3101 may be a first infrared emitting tube, and in this case, the first signal emitted by the first signal emitting apparatus 3101 is a first infrared signal, and the first signal receiving apparatus 3102 may be a first infrared receiving tube; the first device 310 further includes a first micro control unit, the first micro control unit is connected to the first infrared transmitting tube and the first infrared receiving tube, the first infrared receiving tube is connected to the first pin, when the first infrared receiving tube receives a signal, the voltage of the first pin is low voltage, and when the first infrared receiving tube does not receive a signal, the voltage of the first pin is high voltage. The first micro-processing unit is used for judging whether the first infrared receiving tube receives signals or not according to the state of the first pin.
The second device 320 may be a second infrared correlation sensor, the second signal emitting apparatus 3201 may be a second infrared emitting tube, in which case, the second signal emitted by the second signal emitting apparatus is a second infrared signal, and the second signal receiving apparatus 3202 may be a second infrared receiving tube. The second device 320 further includes a second micro control unit, which is connected to the second infrared transmitting tube and the second infrared receiving tube, the second infrared receiving tube is connected to the second pin, and the second micro processing unit is configured to determine whether the second infrared receiving tube receives a signal according to a state of the second pin.
Of course, the first device, the first signal transmitting apparatus, the first signal receiving apparatus, the second device, the second signal transmitting apparatus, and the second signal receiving apparatus may also be other devices and apparatuses, and the embodiments of the present application are not limited.
In a possible application scenario, the first infrared correlation sensor and the second infrared correlation sensor are respectively arranged on two sides of a highway, and when it is desired to detect whether vehicles or pedestrians pass through the highway, the target detection method provided by the application can be adopted.
In another possible application scenario, the first infrared correlation sensor and the second infrared correlation sensor are respectively arranged on two sides of a home enclosure, and when detecting whether a layman turns in the home enclosure, the target detection method provided by the application can be adopted.
Next, a first application scenario provided by the present application is specifically described. By using the target detection method provided by the application, whether vehicles pass through the highway is detected.
Fig. 4 shows a flowchart of a target detection method provided in an embodiment of the present application. As shown in fig. 4, before the first infrared transmitting tube transmits the first infrared signal, the first infrared receiving tube stops receiving the first infrared signal, the second infrared transmitting tube stops transmitting the second signal, and the second infrared receiving tube can receive the first infrared signal. At this time, the second infrared receiving tube is in a phase of waiting for receiving the first infrared signal, and when it is determined that the second infrared receiving tube can receive the first infrared signal, then the first infrared transmitting tube starts to transmit the first infrared signal, and at the same time, the second infrared receiving tube starts to receive the first infrared signal.
At this time, the second infrared receiving tube receives the first infrared signal in two cases:
first, when the second infrared receiving tube can receive the first infrared signal, the state of the second pin of the second infrared receiving tube changes to low level.
Second, when the second infrared receiving tube does not receive the first infrared signal, the state of the second pin of the second infrared receiving tube is high level.
In one possible embodiment, the time duration for target detection on the road is divided into a plurality of periods in T. If the maximum allowable speed of the road is V (unit: m/s) and the length of the vehicle is L (unit: m), the transmission period of the infrared signal satisfies the following conditions: t is less than or equal to L/V. Of course, the period may also be set according to specific situations, and the embodiment of the present application is not limited.
In one embodiment, within the first period T, one period may be divided into a first period and a second period. Fig. 5 shows a timing chart of signal transmission and reception provided by the embodiment of the present application, as shown in fig. 5, a first infrared signal is transmitted first in a first time period, and a second infrared signal is transmitted in a second time period, which, of course, may be set according to specific situations, and the embodiment of the present application is not limited.
Therefore, during the first time period of the first period T, the first infrared transmitting tube of the first infrared correlation sensor transmits the first infrared signal, at this time, the first infrared receiving tube prohibits the reception of the first infrared signal, the second infrared transmitting tube of the second infrared correlation sensor prohibits the transmission of the second infrared signal, and the second infrared receiving tube permits the reception of the first infrared signal.
It should be noted that the duration of the first time period is: the total time from the beginning of prohibiting the first infrared signal from being received by the first infrared receiving tube to the completion of receiving the first infrared signal by the second infrared receiving tube.
Next, when the first infrared signal transmitting tube transmits the first infrared signal, the first infrared receiving tube may receive the second infrared signal. At this time, the second infrared receiving tube prohibits reception of the second infrared signal, and when the first infrared receiving tube can receive the second infrared signal, the second infrared transmitting tube starts transmitting the second infrared signal, and at the same time, the first infrared receiving tube starts receiving the second infrared signal.
At this time, the first infrared receiving tube receives the second infrared signal in two cases:
first, when the first infrared receiving tube can receive the second infrared signal, the state of the first pin of the first infrared receiving tube changes to low level.
Second, when the first infrared receiving tube does not receive the second infrared signal, the state of the first pin of the first infrared receiving tube is high level.
In a possible embodiment, it can be seen from fig. 5 that, during the second time period of the first period T, the first infrared transmitting tube of the first infrared opposite-radiation sensor prohibits the transmission of the first infrared signal, the first infrared receiving tube permits the reception of the second infrared signal, and the second infrared transmitting tube of the second infrared opposite-radiation sensor transmits the second infrared signal at this time, and the second infrared receiving tube prohibits the reception of the second infrared signal.
It should be noted that the duration of the second time period is: the second infrared receiving tube forbids receiving the second infrared signal, and the total time of the first infrared receiving tube receiving the second infrared signal is up.
It can be understood that, because the models of the infrared receiving tubes are different, the time from the time when the first infrared receiving tube receives the second infrared signal to the time when the infrared output pin outputs the low level or the high level is not consistent, or the time from the time when the second infrared receiving tube receives the first infrared signal to the time when the infrared output pin outputs the low level or the high level is not consistent. Therefore, the specific time of the first time period and the second time period can be specifically adjusted according to the model of the infrared receiving tube, and the embodiment of the application is not limited.
The first time period and the second time period may be adjacent time periods or may have a time interval. Also, as shown in fig. 5, the timing of each remaining period T and the timing in the first period T may be kept coincident.
There are two detection results for the first time period and the second time period, and the first case is: when the second infrared receiving tube can receive the first infrared signal, the state of the output pin of the second infrared receiving tube is at a low level, and when the first infrared receiving tube can receive the second infrared signal, the state of the output pin of the first infrared receiving tube is at a low level, which indicates that no vehicle passes through.
In the second case, when the second infrared receiving tube does not receive the first infrared signal, the state of the output pin of the second infrared receiving tube is at a high level, and when the first infrared receiving tube does not receive the second infrared signal, the state of the output pin of the first infrared receiving tube is at a high level, which indicates that the vehicle passes through.
In the method, in a first time period, when a first signal transmitting device transmits a first signal, a second signal transmitting device stops transmitting the signal, a first signal receiving device stops receiving the signal, and a second signal receiving device can receive the signal; in the second time period, when the second signal transmitting device transmits the second signal, the first signal transmitting device stops transmitting the signal, the second signal receiving device stops receiving the signal, and the first signal receiving device can receive the signal.
Embodiments of the method of object detection provided herein are described above in conjunction with fig. 1-5. The following describes the apparatus provided by the embodiments of the present application.
Fig. 6 shows a schematic diagram of an infrared correlation sensor provided in an embodiment of the present application. The infrared correlation sensor may be the first device or the second device in the above-described embodiments.
As shown in fig. 6, the infrared correlation sensor includes: infrared transmitting tube, infrared receiving tube, MCU and pin. This MCU connects infrared transmitting tube and infrared receiving tube, and the pin is connected to the infrared receiving tube, and when the infrared receiving tube received the signal, the voltage of pin was low-voltage, and when the infrared receiving tube did not receive the signal, the voltage of pin was high-voltage. The micro-processing unit is used for judging whether the infrared receiving tube receives signals according to the state of the pins.
It should be understood that the first device and the second device in the object detection system provided in the embodiments of the present application may be the infrared correlation sensor provided above, and the specific structure is shown in fig. 6.
Embodiments of the present application also provide a computer readable medium for storing a computer program code, where the computer program includes instructions for executing the multi-target tracking method of the embodiments of the present application in the above-mentioned methods. The readable medium may be a read-only memory (ROM) or a Random Access Memory (RAM), which is not limited by the embodiments of the present application.
An embodiment of the present application further provides a system chip, where the system chip includes: the system comprises a processor and a memory, wherein the memory is used for storing a computer program, and the processor is used for calling and running the computer program from the memory so as to enable the chip to execute any one of the target detection methods provided by the embodiment of the application. The present application also provides a computer program product comprising instructions which, when executed, cause the system to perform operations corresponding to the methods described above, respectively. The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded or executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more collections of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a Solid State Drive (SSD).
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. An object detection method is applied to an object detection system, and is characterized in that the object detection system comprises: first equipment and second equipment, first equipment and the relative setting of second equipment, first equipment includes: the second device comprises a first signal receiving device and a first signal transmitting device, and comprises: a second signal receiving device, a second signal transmitting device, the method comprising:
in a first time period, the first signal transmitting device transmits a first signal, the second signal receiving device is used for receiving the first signal, the first signal receiving device stops receiving the signal, and the second signal transmitting device stops transmitting the signal;
in a second time period, the second signal transmitting device transmits a second signal, the first signal receiving device is used for receiving the second signal, the second signal receiving device stops receiving the signal, and the first signal transmitting device stops transmitting the signal;
and determining whether a detection target passes through according to the detection result in the first time period and the detection result in the second time period.
2. The object detection method according to claim 1, wherein the determining whether a detection object passes according to the detection result in the first time period and the detection result in the second time period comprises:
and in the first time period, when the second signal receiving device receives the first signal, and in the second time period, when the first signal receiving device receives the second signal, determining that the detection target passes through.
3. The object detection method of claim 2, further comprising:
and determining that the detection target does not pass when the second signal receiving device does not receive the first signal in the first time period and when the first signal receiving device does not receive the second signal in the second time period.
4. The object detection method of claim 1, further comprising:
determining whether the second signal receiving means can receive the first signal before the first signal transmitting means transmits the first signal;
when the second signal receiving means can receive the first signal, the first signal transmitting means transmits the first signal.
5. The object detection method according to claim 4, characterized in that the method comprises:
the first signal transmitting device and the second signal transmitting device alternately transmit the first signal and the second signal according to a preset time sequence, wherein the preset time sequence is used for indicating the sequence of transmitting the first signal and the second signal.
6. The object detection method of claim 5, further comprising:
and adjusting the duration of the first time period and/or the duration of the second time period according to the model of the first signal receiving device and the model of the second signal receiving device.
7. An object detection system, comprising: a first device and a second device, the first device comprising: the second device comprises a first signal receiving device and a first signal transmitting device, and comprises: second signal receiving means, second signal transmitting means, said system being adapted to perform the method of any of claims 1 to 6.
8. The system of claim 7, wherein the first device is a first infrared correlation sensor and the second device is a second infrared correlation sensor.
9. The system of claim 8, wherein the first signal receiving device is a first infrared receiving tube, the first signal transmitting device is a first infrared transmitting tube, the second signal receiving device is a second infrared receiving tube, and the second signal transmitting device is a second infrared transmitting tube.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1-6.
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