CN113777664A

CN113777664A - A detection method and device

Info

Publication number: CN113777664A
Application number: CN202111015569.1A
Authority: CN
Inventors: 马苏晨; 柳絮青; 卢言峰; 周晓煜
Original assignee: Lazas Network Technology Shanghai Co Ltd
Current assignee: Lazas Network Technology Shanghai Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2021-12-10
Anticipated expiration: 2041-08-31
Also published as: CN113777664B

Abstract

The embodiment of the invention discloses a detection method and a detection device, wherein after a modulation signal group is determined, each light emitting end is controlled to send a corresponding modulation signal group, then the receiving condition of the modulation signal of each light receiving end is determined, and a detection result is determined according to the receiving condition of the modulation signal.

Description

Detection method and device

Technical Field

The invention relates to the field of detection, in particular to a detection method and a detection device.

Background

With the continuous development of distribution services, intelligent cabinets for depositing distribution goods are often used for the transfer of distribution goods. In the operation process of the intelligent cabinet, the occupied condition of each cabinet lattice in the intelligent cabinet is generally required to be detected. The cabinet lattice which is abnormally occupied (the order cannot be normally finished) can be automatically released based on the detection result; the intelligent cabinet clears up the food at night every day, can judge whether have the food at night in the intelligent cabinet through putting the thing response, reduces artificial intervention.

The prior art adopts infrared thing detection method of putting to detect the occupied condition of cabinet check, but prior art exists that the detection blind area is big, easily receives the interference of ambient light and leads to detecting the scheduling problem of misaligning.

Disclosure of Invention

In view of this, embodiments of the present invention provide a detection method and apparatus, so as to improve the detection accuracy for the occupied situation of the closable space and reduce the external environment interference during the detection process.

In a first aspect, the present embodiment provides a detection device for detecting an occupied situation of an enclosable space, the detection device comprising:

the optical transceiver pairs comprise a plurality of groups of first optical transceiver pairs and a plurality of groups of second optical transceiver pairs, each group of optical transceiver pairs comprises an optical transmitting end and an optical receiving end which are oppositely arranged, the optical transmitting end and the optical receiving end of each first optical transceiver pair are arranged along the body diagonal of the closable space, and the optical transmitting end and the optical receiving end of each second optical transceiver pair are arranged on the edge of the bottom surface of the closable space;

a control device configured to perform the steps of:

controlling each light emitting end to send a corresponding modulation signal group, wherein the modulation signal group comprises at least one modulated sending data message, and the sending data message comprises address information; determining the receiving condition of the modulation signal of each optical receiving end; and

determining a detection result according to the receiving condition of the modulation signal;

wherein the detection result is used for representing the occupation condition of the closable space.

Further, the control device is configured to:

determining a sending data information group corresponding to each light emitting end, wherein the sending data information group comprises at least one piece of sending data information;

and modulating the sending data information group to determine the modulation signal group.

Further, the control device is configured to:

for each light emitting end, generating at least one sending data information according to the address information of the light emitting end so as to determine a sending data information group corresponding to the light emitting end.

Further, the generating at least one sending data message according to the address information of the light emitting end includes:

determining at least one timing information;

and respectively generating at least one piece of sending data information according to the address information and each time sequence information of the light emitting end.

Further, the determining at least one timing information comprises:

determining a plurality of increasing or decreasing digital information as a plurality of the timing information, respectively.

Further, the generating at least one of the transmission data information according to the address information of the light emitting end and each timing information respectively includes:

determining corresponding checking information according to the address information and the time sequence information;

and connecting the address information, the timing information and the check information in a predetermined order to generate one of the transmission data information.

Further, the modulating the transmission data information group to determine the modulation signal group comprises:

determining a coding information group according to the sending data information group; and

a set of modulation signals is determined from the set of encoded information.

Further, the determining a set of encoded information from the set of transmitted data information comprises:

and respectively coding each sending data information in the sending data information group to generate corresponding coding information so as to determine the coding information group.

Further, the determining the modulation signal group according to the coding information group comprises:

and respectively carrying out 38K signal modulation on each piece of coded information in the coded information group to generate a corresponding modulation signal so as to determine the modulation signal group.

Furthermore, the modulation signals in the modulation signal group correspond to the transmission data information in the transmission data information group one by one;

the controlling each light emitting end to send the corresponding modulation signal group comprises:

and controlling each light emitting end to sequentially send the modulation signals in the corresponding modulation signal group according to the sequence of sending the data information.

Further, the determining the receiving condition of the modulation signal at each optical receiving end includes:

receiving the receiving signals of each light receiving end;

determining received data information according to the received signal;

determining the data information receiving rate of each optical receiving end according to the received data information;

and the data information receiving rate is used for representing the receiving condition of the modulation signal of the optical receiving end.

Further, the determining, according to the received signal, the received data information includes:

demodulating the received signal to obtain received coded information;

decoding the received coding information to obtain received data information to be verified;

and verifying the received data information to be verified, and determining the successfully verified received data information to be the received data information.

Further, the determining the data information receiving rate of each optical receiving end according to the received data information includes:

determining the received data information of each optical receiving end according to the address information in the received data information;

and determining the data information receiving rate of each optical receiving end according to the received data information of each optical receiving end.

Further, the determining the data information receiving rate of each optical receiving end according to the received data information of each optical receiving end includes:

for each optical receiver, the ratio of the number of received data information and the number of transmitted data information corresponding to the optical receiver is determined as the data information reception rate of the optical receiver.

Further, the determining the detection result according to the modulation signal receiving condition comprises:

determining that the closable space is in an occupied state in response to the fact that the number of the invalid light receiving ends is larger than or equal to a preset receiving end number threshold; or

In response to the fact that the number of the invalid light receiving ends is smaller than the preset receiving end number threshold value, determining that the closable space is in an unoccupied state;

the invalid optical receiving end is an optical receiving end with a data information receiving rate smaller than a preset receiving threshold value.

Further, the control apparatus is further configured to:

in response to the closable space being determined to be in an occupied state, determining a space occupied by a target object according to the invalid light receiving end;

wherein the target object is an object occupying the enclosable space.

Further, the determining the space occupied by the target object according to the invalid light receiving end includes:

and determining the space covered by the invalid light receiving end as the space occupied by the target object.

Furthermore, the closable space is a cuboid cabinet lattice;

the light emitting end and the light receiving end of each first light receiving and transmitting pair are arranged along the body diagonal of the rectangular cabinet grid;

and the light emitting end and the light receiving end of each second light transceiving pair are arranged on the edges of the bottom surface of the cuboid cabinet.

In a second aspect, an embodiment of the present invention provides a detection method for detecting an occupied situation of an enclosable space, where the detection method includes:

controlling each light emitting end to send a corresponding modulation signal group, wherein the modulation signal group comprises at least one modulated sending data message, and the sending data message comprises address information;

determining the receiving condition of the modulation signal of each optical receiving end; and

In a third aspect, an embodiment of the present invention provides a detection device for detecting an occupied situation of an enclosable space, where the detection device includes:

the control unit is used for controlling each light emitting end to send a corresponding modulation signal group, wherein the modulation signal group comprises at least one modulated sending data message, and the sending data message comprises address information;

the receiving unit is used for determining the receiving condition of the modulation signals of all the optical receiving ends; and

the determining unit is used for determining a detection result according to the receiving condition of the modulation signal;

In a fourth aspect, an embodiment of the present invention provides an intelligent cabinet, including:

the cabinet body is provided with a plurality of cabinet lattices and a cabinet door for closing the cabinet lattices; and

the detection apparatus of any one of the first aspect.

The detection device of the embodiment of the invention controls each light emitting end to send the corresponding modulation signal group after the modulation signal group is determined by arranging a plurality of groups of light receiving and sending pairs, determines the receiving condition of the modulation signal of each light receiving end and determines the detection result according to the receiving condition of the modulation signal. Because the signals which are sent and detected by the light receiving and sending pair and are subjected to modulation coding are not easy to interfere, the detection method and the detection device can improve the detection accuracy rate of the occupied condition of the closable space and reduce the external environment interference in the detection process.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of an intelligent cabinet of an embodiment of the invention;

FIG. 2 is a block diagram of a detection device according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an optical transceiver pair according to an embodiment of the present invention;

FIG. 4 is a flow chart of a detection method according to an embodiment of the present invention;

FIG. 5 is a diagram illustrating sending data messages according to an embodiment of the present invention;

FIG. 6 is a flow chart of determining a set of modulation signals according to an embodiment of the present invention;

FIG. 7 is a code map of an embodiment of the present invention;

FIG. 8 is a diagram illustrating an embodiment of encoding information;

FIG. 9 is a schematic diagram of an unmodulated signal according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a modulated 38k signal according to an embodiment of the present invention;

FIG. 11 is a flow chart of determining modulated signal reception according to an embodiment of the present invention;

FIG. 12 is a flow chart of determining received data information according to an embodiment of the present invention;

fig. 13 is a flowchart of determining a data information receiving rate of each optical receiver according to an embodiment of the present invention;

FIG. 14 is a diagram illustrating a received signal according to an embodiment of the present invention;

FIG. 15 is a diagram illustrating an embodiment of receiving encoded information;

FIG. 16 is a schematic view of a detecting device according to an embodiment of the present invention;

fig. 17 is a schematic diagram of a control device of an embodiment of the present invention.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout this application, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present application, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

With the continuous development of distribution services, the intelligent cabinet for depositing and distributing goods comes into the sight of people.

Fig. 1 is a schematic diagram of an intelligent cabinet according to an embodiment of the present invention. As shown in fig. 1, the intelligent cabinet includes 16 cabinet compartments, a cabinet door for closing each cabinet compartment, and a cabinet door controller. Each cabinet lattice can be used for storing distribution goods, each cabinet door is connected with a cabinet door controller, the cabinet door controller is used for controlling the opening of each cabinet door, and specifically, when the cabinet door controller receives an opening instruction sent by a user, the cabinet door corresponding to the opening instruction can be opened for the user.

In the actual operation in-process of this intelligence cabinet, the condition of being occupied to each cabinet check needs to be detected usually to make things convenient for the user to in time extract or deposit the delivery goods.

The existing method is to adopt an infrared object-placing detection method to detect the occupied condition of cabinet lattices, and particularly, the method utilizes the characteristic that near infrared rays are generally not transparent to distribution objects, and determines whether the cabinet lattices are occupied or not by judging whether the near infrared rays are lost or not when penetrating through the objects, but the existing method has some problems, such as: the blind area that detects is great, can not detect the interior whole spaces of cabinet check, for example again: the testing process has certain requirement to the testing environment, for example when the cabinet door of intelligence cabinet is transparent material or is equipped with the window, light among the external environment can get into the cabinet check in, produces the influence to the testing result to lead to detecting the problem of misaligning.

In view of the above, embodiments of the present invention provide a detection method and apparatus based on the existing method, by which the detection accuracy of the occupied condition of the cabinet can be improved, and the environmental impact in the detection process can be reduced.

It should be understood that the usage scenario of the detection method and apparatus is not limited to the intelligent cabinet, and any enclosable space may use the detection method and apparatus in the embodiments of the present invention, for example: the detection method and the detection device can be applied to a display cabinet to detect displayed goods, or can be applied to a distribution box to detect distributed goods, or can be applied to an elevator or a house to detect objects or human bodies.

Fig. 2 is a block diagram of a detection apparatus according to an embodiment of the present invention. As shown in fig. 2, the detection device includes a plurality of sets of optical transceiver pairs and a control device 3.

Wherein, each set of optical transceiver pair includes a light emitting end and a light receiving end, for example: the optical transceiving pair 2 comprises an optical transmitting end 2-1 and an optical receiving end 2-2. Wherein, the light emission end is used for emitting infrared ray, the light receiving end is used for receiving the infrared ray that its corresponding light emission end emitted, for example: the light receiving end 2-2 is used for receiving the infrared rays emitted by the corresponding light emitting end 2-1.

Optionally, the detection device in this embodiment may be directly installed on any existing intelligent cabinet, or may be integrated with an existing intelligent cabinet, that is, integrated with an original control system of the intelligent cabinet.

Optionally, the present embodiment utilizes the characteristic that the near infrared light is generally opaque to the distribution object to detect the occupied condition of the closable space, and in the practical application process, other light having the same property, such as light in the visible light band or light signals in the ultraviolet light band, may also be used as the detection method and the detection device in the embodiments of the present invention.

In the actual use process, the light receiving end and the light emitting end in each set of light transceiving pairs need to be relatively arranged at different positions of the detected space, for example: fig. 3 is a schematic diagram of an arrangement of an optical transceiver pair according to an embodiment of the present invention, specifically, the closable space in fig. 3 is a rectangular parallelepiped cabinet, which is specifically the cabinet 1 in fig. 1, it should be understood that the shape of the closable space is not limited to a rectangular parallelepiped, and may also be other shapes, for example, the closable space may be a cube or a sphere, and the specific shape of the closable space depends on the shape of the detected space in the actual application process.

As shown in fig. 3, the light emitting end and the light receiving end in each set of light transceiving pairs are oppositely disposed, specifically, the light emitting end 2-1 and the light receiving end 2-2, and the light emitting end 4-1 and the light receiving end 4-2 are oppositely disposed on the diagonal vertex of the rectangular parallelepiped, that is, the light emitting end 2-1 and the light receiving end 2-2 are disposed along one body diagonal of the rectangular parallelepiped, the light emitting end 4-1 and the light receiving end 4-2 are disposed along the other body diagonal of the rectangular parallelepiped, and the light emitting end 5-1 and the light receiving end 5-2 are oppositely disposed on two edges of the bottom surface of the cabinet lattice of the rectangular parallelepiped.

Through setting up light emission end and light receiving end relatively on two arriss of cuboid cabinet check bottom surface, can detect the object of placing at any time in the cabinet check, lead to the light with light emission end and light receiving end set up relatively on the body diagonal line of cuboid cabinet check, can detect the whole space in cuboid cabinet check to avoid appearing detecting the blind area

It should be understood that the number and the arrangement positions of the optical transceiver pairs shown in the drawings are only for convenience of understanding, and in practical applications, the number of the optical transceiver pairs may be changed according to the size of the detected space, for example: for a larger space, more optical transceiver pairs can be arranged, for a smaller space, fewer optical transceiver pairs can be arranged, and the positions of the optical transceiver pairs can also be arranged according to the shape of the detected space, for example: the optical transceiver pairs may also be disposed on opposite sides of the cuboid, for example: when the closable space is a sphere, the light emitting end and the light receiving end may be disposed opposite to each other on a spherical surface of the sphere.

Alternatively, when the detected space is irregular, it is ensured that there is no any block between the light emitting end and the light receiving end when the light emitting end and the light receiving end are disposed, so as to ensure the accuracy of detection.

Optionally, the set light transceiving pair should enable the detection range to cover the whole detected space so as to ensure that no blind zone exists in the detection process, optionally, after the light transceiving pair is set, the light emitting end can be controlled to emit infrared rays, and the corresponding infrared ray detection device is used for detecting the coverage range of the infrared rays so as to adjust the number and the setting position of the light transceiving pair in time.

The control device 3 is configured to control the light emitting ends and the light receiving ends of the multiple sets of light transceiving pairs, and is electrically connected to the light emitting ends and the light receiving ends. For example, the control device 3 may control the light emitting end 2-1 of the light transceiving pair 2 to emit infrared light, and further, the control device 3 is further configured to determine the occupied status of the detected space according to the signal received from the light receiving end. The control device 3 may be implemented by a single chip, a Digital Signal Processor (DSP), a Programmable Logic Device (PLD), a field programmable logic array (FPGA), or an Application Specific Integrated Circuit (ASIC). Fig. 4 is a flowchart of a detection method according to an embodiment of the present invention, where the detection method is applied to the control device in the above embodiment, and the detection method can detect that the detected space is occupied, as shown in fig. 4, the method includes the following steps:

step S100: a transmission data information group corresponding to each light emitting terminal is determined.

The light emitting ends are the light emitting ends described in the above embodiments, the sending data information group includes at least one sending data information, the sending data information is data information to be transmitted between the light emitting end and the light receiving end, and the sending data information includes address information.

Specifically, after each optical transceiving pair in the detected space is set, a sending data information group corresponding to a light emitting end of each optical transceiving pair is determined, wherein the data information group at least comprises one sending data information.

Alternatively, the transmission data information group corresponding to each light emitting terminal may be determined by the following steps.

Step S110: for each light emitting end, generating at least one sending data information according to the address information of the light emitting end so as to determine a sending data information group corresponding to the light emitting end.

Different light emitting ends have different address information, corresponding sending data information is generated according to the address information, and the source of the data information can be determined according to the address information in the data information after the light receiving end receives the data information sent by the light sending end.

Alternatively, generating at least one transmission data information according to the address information of the light emitting end to determine the transmission data information group corresponding to the light emitting end may be implemented by the following steps.

Step S111: at least one timing information is determined.

In this embodiment, the timing information is digital information, and the digital information may be a string of specific numbers, for example: 123456.

it should be understood that the amount of the timing information may be specified by a user, for example: the number of the time sequence information may be one or more.

Alternatively, when the number of the timing information is plural, plural increasing or decreasing digital information may be respectively determined as plural pieces of the timing information.

For example: when the number of the timing information is four, the timing information may be 112, 113, 114, and 115, respectively.

Step S112: and respectively generating at least one piece of sending data information according to the address information and each time sequence information of the light emitting end.

Specifically, after the timing information is determined, at least one transmission data information may be respectively generated from the address information of the light emitting end and each timing information.

Optionally, in order to reduce the influence of the signal in the external environment on the detection result, corresponding verification information may be further added to the transmission data information. Specifically, step S112 may further include the following sub-steps.

Step S1121: and determining corresponding checking information according to the address information and the time sequence information.

Specifically, according to the address information and the timing information, corresponding verification information is determined based on a predetermined verification algorithm.

For example: fig. 5 is a schematic diagram of transmitted data information according to an embodiment of the present invention, it should be understood that the data shown in fig. 5 is only for convenience of understanding, and in an actual application process, the number of transmitted data information and specific data are not limited thereto, and as shown in fig. 5, when the address information is 001 and the timing information is 112, the check information is calculated based on a predetermined check algorithm and is xxx, when the address information is 001 and the timing information is 113, the check information is calculated based on the predetermined check algorithm and is xxx.

Alternatively, the predetermined checking algorithm may be a checksum algorithm, and it should be understood that the checking algorithm may also be other checking algorithms, such as: an exclusive or Check or a CRC Check (Cyclic Redundancy Check).

Step S1122: and connecting the address information, the timing information and the check information in a predetermined order to generate one of the transmission data information.

Specifically, after the check information is determined, the address information, the timing information, and the check information may be concatenated in a predetermined order to generate one transmission data information.

For example: as shown in fig. 5, the address information 001, the timing information 112, and the check information xxx are connected in sequence to form "001112 xxx", it should be understood that, for convenience of understanding, the data shown in fig. 5 are in decimal form, and in the actual application process, it is in binary form, that is, the transmission data information obtained by connecting the three is a string of characters in binary form composed of 0 and 1.

Alternatively, in order to facilitate the identification of the subsequently received data information, the transmitted data information may be a fixed number of bits, and the number of bits occupied by each piece of information therein may be a predetermined number of the fixed number of bits, for example: the fixed number of bits of the transmitted data information may be 24 bits, wherein the first 8 bits of the fixed number of bits are used to represent the address information, the middle 8 bits of the fixed number of bits are used to represent the timing information, and the last 8 bits of the fixed number of bits are used to represent the check information, it should be understood that, in this case, the determined timing information should have a value between 0 and 255 so as not to exceed the range that the predetermined number of bits can express.

Alternatively, when the light emitting end continuously transmits data information, in order to distinguish different data information, the transmitted data information may further include corresponding division information, which may be a segment of a special character, for example, a continuous number of 0 or 1, etc.

Step S200: and determining a modulation signal group according to the sending data information group.

Specifically, after the transmission data information group is determined, the modulation signal group may be determined from the transmission data information group. The modulation signal group comprises modulation signals obtained by modulating at least one sending data information in the data information group, the modulation signals in the modulation signal group correspond to the sending data information in the sending data information group one by one, and the modulation signals are carriers for sending the data information and are used for indicating a light emitting end to send the sending data information in a modulation signal mode. That is, the modulation signal group includes at least one modulated transmission data information, and the transmission data information includes address information.

Alternatively, fig. 6 is a flowchart of determining a modulation signal group according to an embodiment of the present invention, and as shown in fig. 6, the determining a modulation signal group according to the transmission data information group according to this embodiment includes the following steps.

Step S210: and determining a coding information group according to the sending data information group.

Specifically, before determining the modulation signal group, it is necessary to determine the coding information group from the transmission data information group.

Optionally, each piece of transmission data information in the transmission data information group may be encoded separately, and corresponding encoded information may be generated to determine the encoded information group.

Specifically, fig. 7 is a coding comparison diagram according to an embodiment of the present invention, and as shown in fig. 7, "1" corresponds to a square wave 71 with low and high levels of both 0.26ms, and "0" corresponds to a square wave with low level of 0.52ms and high level of 0.26ms, and two types of square waves are used to code 0 and 1 of each transmission data information in a transmission data information group, so as to generate corresponding coding information, so as to determine a coding information group.

Fig. 8 is a schematic diagram of encoded information according to an embodiment of the present invention, and as shown in fig. 8, the square wave in fig. 8 is an encoded information diagram 81 obtained by encoding transmission data information "101", it should be understood that the schematic diagram of encoded information shown in fig. 8 is only for convenience of understanding, and the encoded information in the practical application process is not limited thereto. Those skilled in the art will readily appreciate that other types of encoding methods may be used to encode the transmit data information in the transmit data information group.

Step S220: a set of modulation signals is determined from the set of encoded information.

Specifically, after obtaining the encoded information group, the modulation signal group may be further determined according to the encoded information group.

Alternatively, each piece of encoded information in the set of encoded information may be separately 38K signal modulated to generate a corresponding modulation signal, so as to determine the set of modulation signals.

Specifically, in order to improve the stability of detection, the present embodiment uses modulated 38K infrared rays as an information carrier. The 38K infrared ray has good anti-interference capability, and can bear corresponding transmission data information by modulating the infrared ray.

Fig. 9 is a schematic diagram of an unmodulated signal according to an embodiment of the present invention, and fig. 10 is a schematic diagram of a modulated 38k signal according to an embodiment of the present invention, as shown in fig. 8, 9 and 10, the unmodulated signal 91 in fig. 9 is modulated by using the encoded information 81 in fig. 8 to obtain the modulated signal 101 in fig. 10.

Step S300: and controlling each light emitting end to send a corresponding modulation signal group.

Specifically, each light emitting terminal is controlled to transmit a modulation signal in a modulation signal group corresponding to each light emitting terminal.

The light emitting ends can be switched between on and off according to the high and low levels in the modulation signal, so that the modulation signal is sent out in the form of an optical signal.

Specifically, when the modulation signal is at a low level, the transmitting 38K signal is turned on, and when the modulation signal is at a high level, the transmitting 38 signal is turned off and suspended, which is represented by that the light emitting end continuously strobes according to the modulation signal in the practical application process.

Alternatively, the modulation signals in the corresponding modulation signal groups may be sequentially transmitted according to the order of transmitting the data information, respectively.

Specifically, the modulation signals in the modulation signal group correspond to the transmission data information of the transmission data information group one by one, and the timing information in the transmission data information has an increasing or decreasing order, and the light emitting end may sequentially transmit the modulation signals in the modulation signal group in this order.

Step S400: and determining the receiving condition of the modulation signal of each optical receiving end.

Specifically, while controlling the light emitting end to emit the modulation signal, the light receiving end receives the modulation signal emitted by the corresponding light emitting end, and after the process of sending the modulation signal is finished, the modulation signal receiving condition of each light receiving end is determined.

Fig. 11 is a flowchart illustrating a method for determining a modulation signal reception situation according to an embodiment of the present invention, and as shown in fig. 11, the method for determining a modulation signal reception situation of each optical receiving end according to the present embodiment includes the following steps.

Step S410: receiving signals of each light receiving end.

The receiving signal is an electrical signal converted by the optical receiving end after receiving the optical signal.

Specifically, since the light emitting end and the light receiving end are oppositely disposed, the light receiving end can directly receive the light signal emitted by the corresponding light emitting end, output a high level when receiving the light signal, and output a low level when not receiving the light signal.

Fig. 14 is a schematic diagram of a received signal according to an embodiment of the present invention, and the received signal 141 in fig. 14 is specifically a received signal corresponding to the modulated signal 101 shown in fig. 10.

Step S420: and determining received data information according to the received signal.

Specifically, after the receiving end receives the signal, the received data information may be determined according to the information contained in the received signal.

Optionally, fig. 12 is a flowchart of determining received data information according to an embodiment of the present invention, and as shown in fig. 12, the method for receiving data information according to the embodiment includes the following steps.

Step S421: and demodulating the received signal to obtain the received coding information.

Specifically, as shown in fig. 14, since the light emitting end is turned off when the modulation signal is at a high level and turned on when the modulation signal is at a low level, and the light receiving end outputs a high level when receiving a signal and outputs a low level when not receiving a signal, the received signal 141 is a signal opposite to the modulation signal 101, and the received encoded information can be obtained by demodulating the received signal.

For example: fig. 15 is a diagram illustrating received encoded information according to an embodiment of the present invention, and received encoded information 151 in fig. 15, which corresponds to encoded information 81 in fig. 8, can be obtained after demodulating received signal 141 in fig. 14.

Step S422: and decoding the received coding information to obtain the received data information to be verified.

Specifically, after the received encoded information is obtained, the received encoded information may be decoded according to the encoding map in fig. 7, so as to obtain the received data information to be verified.

For example: decoding the received encoded information shown in fig. 15 can obtain that the received data information to be verified is "101".

Step S423: and verifying the received data information to be verified, and determining the successfully verified received data information to be the received data information.

Specifically, in order to reduce the interference of the external environment on the detection result, the to-be-verified received data information may be verified according to the verification information in the to-be-verified received data information, and the to-be-verified received data information that is successfully verified is determined as the received data information, so as to shield the external interference signal.

Step S430: and determining the data information receiving rate of each optical receiving end according to the received data information.

Specifically, after the received data information is determined, the data information receiving rate of each optical receiving terminal is further determined based on the determined received data information.

Optionally, fig. 13 is a flowchart illustrating a method for determining a data information receiving rate of each optical receiving end according to an embodiment of the present invention, where the method for determining the data information receiving rate of each optical receiving end includes the following steps.

Step S431: and determining the received data information of each optical receiving end according to the address information in the received data information.

Specifically, for each light receiving end, the received data information having the same address information as the address information of the light transmitting end corresponding to the light receiving end is determined as the received data information of the light receiving end.

For example: if the address information of the light emitting end corresponding to the light receiving end a is 001, the received data information with the address information of 001 is determined as the received data information of the light receiving end a.

Step S432: and determining the data information receiving rate of each optical receiving end according to the received data information of each optical receiving end.

Alternatively, for each optical receiver, a ratio of received data information corresponding to the optical receiver to the number of transmitted data information is determined as a data information reception rate of the optical receiver.

Specifically, for each light receiving end, the ratio of the received data information corresponding to the light receiving end to the number of transmitted data information transmitted by the light emitting end corresponding to the light receiving end is determined as the data information receiving rate of the light receiving end.

For example: for the optical receiving end a, the number of received data information corresponding to the optical receiving end a is 10, and the number of transmitted data information transmitted by the optical transmitting end corresponding to the optical receiving end a is 20, and at this time, it is determined that the data information receiving rate of the optical receiving end a is 50%.

Step S500: and determining a detection result according to the receiving condition of the modulation signal.

Specifically, after the data information receiving rate of each light receiving end is determined, the occupied condition of the closable space is determined according to the data information receiving rate of each light receiving end.

Alternatively, the light receiving ends with the data information receiving rate smaller than the predetermined receiving threshold may be determined as invalid light receiving ends, and then the occupied condition of the closable space may be determined according to the number of the invalid light receiving ends.

It should be understood that the predetermined reception threshold may be set by a user in advance.

Alternatively, since the optical signal is inevitably affected by various factors during the transmission process, the predetermined receiving threshold should be set in consideration of the relevant factors, such as: the predetermined receive threshold should be lower for scenes with strong ambient light and higher for scenes with weak ambient light.

Specifically, after determining the invalid light receiving ends, if the number of the invalid light receiving ends is greater than or equal to the preset receiving end number threshold, it is determined that the closable space is in an occupied state, and if the number of the invalid light receiving ends is less than the preset receiving end number threshold, it is determined that the closable space is in an unoccupied state.

Optionally, the preset receiving end number threshold may be adjusted according to the set number of optical transceiver pairs, for example, when the set number of optical transceiver pairs is large, the set preset receiving end number threshold should be low, and when the set number of optical transceiver pairs is small, the set preset receiving end number threshold should be high.

Alternatively, the ratio of the number of the invalid light-receiving ends to the total number of the light-receiving ends may be determined as the inefficiency, and then the detection result may be determined according to the inefficiency.

Specifically, when the inefficiency is greater than or equal to a certain threshold, it indicates that the detected space is in an occupied state, and when the inefficiency is less than the certain threshold, it indicates that the detected space is in an unoccupied state.

Alternatively, the occupied state of the detected space may be determined by other methods, for example, a ratio of the received data information to the transmitted data information may be calculated, and the result may represent a receiving condition of the entire optical receiving end for the modulated signal, when the ratio of the received data information to the transmitted data information is greater than or equal to a preset threshold, it indicates that the detected space is in an unoccupied state, and when the ratio of the received data information to the transmitted data information is less than the preset threshold, it indicates that the detected space is in an occupied state.

Optionally, in this embodiment, on the basis of determining that the detected space is in an occupied state, the position of the object occupying the detected space may be further determined according to the invalid light receiving end.

Specifically, the space covered by the invalid light receiving end may be determined as the space occupied by the target object.

Wherein the target object is an object occupying the enclosable space.

The detection device of the embodiment of the invention determines the modulation signal group according to the sending data information group after determining the sending data information group corresponding to each light-emitting end by setting a plurality of groups of light receiving and sending pairs, controls each light-emitting end to send the corresponding modulation signal group, determines the receiving condition of the modulation signal of each light-receiving end, and determines the detection result according to the receiving condition of the modulation signal. Because the signals which are sent and detected by the light receiving and sending pair and are subjected to modulation coding are not easy to interfere, the detection method and the detection device can improve the detection accuracy rate of the occupied condition of the closable space and reduce the external environment interference in the detection process.

Fig. 16 is a schematic view of a detection apparatus according to an embodiment of the invention. As shown in fig. 16, the detection apparatus of the embodiment of the present invention includes a control unit 161, a receiving unit 162, and a determination unit 163.

Specifically, the control unit 161 is configured to control each optical transmitter to transmit a corresponding modulation signal group, where the modulation signal group includes at least one modulated transmission data information, and the transmission data information includes address information;

the receiving unit 162 is configured to determine a receiving condition of the modulation signal at each optical receiving end;

the determining unit 163 is configured to determine a detection result according to the modulated signal receiving condition, where the detection result is used to characterize an occupied condition of the closable space.

After the detection device determines the sending data information groups corresponding to the light emitting ends, the detection device determines the modulation signal group according to the sending data information groups, controls the light emitting ends to send the corresponding modulation signal group, determines the modulation signal receiving conditions of the light receiving ends, determines the detection result according to the modulation signal receiving conditions, can improve the detection accuracy rate of the occupied condition of the closable space by detecting through the detection device, and reduces the external environment interference in the detection process.

Fig. 17 is a schematic diagram of a control device of an embodiment of the present invention. As shown in fig. 17, the control device: includes at least one processor 171; and a memory 172 communicatively coupled to the at least one processor 171; the memory 172 stores instructions executable by the at least one processor 171, and the instructions are executed by the at least one processor 171 to implement the detection method.

Specifically, the control device includes: one or more processors 171 and a memory 172, and one processor 171 is illustrated in fig. 17. The processor 171 and the memory 172 may be connected by a bus or by other means, and fig. 17 illustrates an example of a bus connection. Memory 172, which is a non-volatile computer-readable storage medium, may be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The processor 171 implements the above-described detection method by executing various functional applications and data processing of the device by executing nonvolatile software programs, instructions, and modules stored in the memory 172.

The memory 172 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store a list of options, etc. Further, the memory 172 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, the memory 172 may optionally include memory located remotely from the processor 171, which may be connected to an external device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

One or more modules are stored in the memory 172 and, when executed by the one or more processors 171, perform the detection method of any of the method embodiments described above.

The product can execute the method provided by the embodiment of the application, has corresponding functional modules and beneficial effects of the execution method, and can refer to the method provided by the embodiment of the application without detailed technical details in the embodiment.

Another embodiment of the invention is directed to a non-transitory storage medium storing a computer-readable program for causing a computer to perform some or all of the above-described method embodiments.

That is, as can be understood by those skilled in the art, all or part of the steps in the method for implementing the embodiments described above may be implemented by a program instructing related hardware, where the program is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The embodiment of the invention discloses A1 and a detection device, which is used for detecting the occupied condition of a closable space, and comprises:

a control device configured to perform the steps of:

A2, the apparatus of A1, the control apparatus configured to:

A3, the apparatus of A2, the control apparatus configured to:

A4, the apparatus of A3, the generating at least one transmission data information according to the address information of the light emitting end comprising:

determining at least one timing information;

A5, the apparatus of A4, the determining at least one timing information comprising:

A6, the apparatus of A4, wherein the generating at least one of the transmission data information according to the address information and the respective timing information of the light emitting ends respectively comprises:

A7, the apparatus of A2, the modulating the set of transmit data information to determine the set of modulation signals comprising:

a set of modulation signals is determined from the set of encoded information.

A8, the apparatus of A7, the determining a set of coding information from the set of transmission data information comprising:

A9, the apparatus of A8, the determining the set of modulation signals from the set of coded information comprising:

A10, the device according to A5, wherein the modulation signals in the modulation signal group correspond to the transmission data information in the transmission data information group one by one;

A11, the apparatus according to A1, wherein the determining the receiving condition of the modulation signal at each optical receiving end comprises:

receiving the receiving signals of each light receiving end;

determining received data information according to the received signal;

A12, the apparatus of A11, wherein the determining received data information from the received signal comprises:

demodulating the received signal to obtain received coded information;

A13, the apparatus according to A11, wherein the determining the data information receiving rate of each photoreceiver according to the received data information comprises:

A14 the apparatus of A13, wherein the determining the data information receiving rate of each photoreceiver based on the received data information of each photoreceiver comprises:

A15, the apparatus of A14, the determining a detection result according to the modulated signal reception condition comprising:

A16, the apparatus of A15, the control apparatus further configured to:

wherein the target object is an object occupying the enclosable space.

A17, the apparatus according to A16, the determining the space occupied by the target object according to the invalid light receiving end includes:

A18, the device according to A1, wherein the closable space is a cuboid cabinet lattice;

The embodiment of the invention discloses B1 and a detection method, which are used for detecting the occupied condition of a closable space, and the detection method comprises the following steps:

The embodiment of the invention discloses C1 and a detection device, which are used for detecting the occupied condition of a closable space, and the detection device comprises:

The embodiment of the invention discloses D1 and an intelligent cabinet, which comprises:

the test device according to any of A1-18.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A detection device for detecting the occupancy of a sealable space, wherein the detection device comprises:

Multiple groups of optical transceiver pairs, wherein the multiple groups of optical transceiver pairs include multiple groups of first optical transceiver pairs and multiple groups of second optical transceiver pairs, and each group of optical transceiver pairs includes oppositely arranged optical transmitting ends and optical receiving ends. The light-emitting end and the light-receiving end of one light-transmitting pair are arranged along the body diagonal of the sealable space, and the light-emitting end and the light-receiving end of each second light-transmitting pair are arranged on the edge of the bottom surface of the sealable space;

a control device, configured to perform the following steps:

Controlling each optical transmitting end to send a corresponding modulated signal group, wherein the modulated signal group includes at least one modulated transmission data information, and the transmission data information includes address information;

determining the reception of the modulated signal at each optical receiving end; and

Determine the detection result according to the receiving condition of the modulated signal;

Wherein, the detection result is used to characterize the occupancy situation of the enclosable space.

2. The apparatus of claim 1, wherein the control device is configured to:

determining a sending data information group corresponding to each optical transmitter, wherein the sending data information group includes at least one of the sending data information;

The group of modulated signals is determined by modulating the group of transmitted data information.

3. The apparatus of claim 2, wherein the control device is configured to:

For each optical transmitting end, at least one piece of transmission data information is generated according to the address information of the optical transmitting end, so as to determine the transmitting data information group corresponding to the optical transmitting end.

4. The device according to claim 3, wherein the generating at least one piece of transmission data information according to the address information of the optical transmitter comprises:

determine at least one timing information;

At least one piece of the transmission data information is respectively generated according to the address information of the optical transmitting end and each timing information.

5. The apparatus according to claim 4, wherein the determining at least one timing information comprises:

A plurality of incremented or decremented digital information are respectively determined as a plurality of the timing information.

6 . The device according to claim 4 , wherein the generating at least one piece of the transmission data information according to the address information of the optical transmitting end and each timing information respectively comprises: 6 .

Determine corresponding check information according to the address information and the timing information;

The address information, the timing information and the check information are connected in a predetermined order to generate one of the transmission data information.

7. The apparatus according to claim 2, wherein the determining the modulated signal group by modulating the transmission data information group comprises:

determining a set of encoded information based on the set of transmitted data information; and

A modulated signal group is determined based on the encoded information group.

8. A detection method for detecting the occupancy of a sealable space, wherein the detection method comprises:

9. A detection device for detecting the occupancy of a sealable space, wherein the detection device comprises:

a control unit, configured to control each optical transmitting end to send a corresponding modulation signal group, wherein the modulation signal group includes at least one modulated transmission data information, and the transmission data information includes address information;

a receiving unit for determining the receiving conditions of the modulated signals at each optical receiving end; and

a determining unit, configured to determine a detection result according to the receiving condition of the modulated signal;

10. A smart cabinet, comprising:

a cabinet having a plurality of compartments and doors for closing the compartments; and

The detection device according to any one of claims 1-7.