CN219740465U - Intelligent building visual intercom device and system - Google Patents

Abstract

The utility model discloses an intelligent building visual intercom device and system. The intelligent building visual intercom device comprises a shell and a circuit board, wherein the circuit board is arranged in the shell; the circuit board is provided with a processor, and a touch display, a communicator, a detection chip and a control chip which are electrically connected with the processor; the touch display protrudes from the housing; the detection chip and the control chip are respectively and electrically connected with a detection device or an execution device which is arranged indoors or in an elevator or outdoors. The utility model solves the technical problem that the intelligent use requirement of a user cannot be met due to single function of the visual intercom device.

Description

Intelligent building visual intercom device and system

Technical Field

The utility model relates to the field of intercom devices, in particular to a visual intercom device and system for an intelligent building.

Background

The inventor finds that, along with the development of the age, the current user pays more attention to the intellectualization of life except the traditional requirements of safety and comfort, but the current visual intercom device on the market can only carry out visual intercom, and part of the visual intercom device has the function of controlling the elevator, has single function, cannot realize diversified functions and cannot meet the intelligent use requirement of the user.

Aiming at the problems that the visual intercom device in the related technology has single function and can not meet the intelligent use requirement of users, no effective solution is proposed at present.

Disclosure of Invention

The utility model mainly aims to provide an intelligent building visual intercom device and system, which are used for solving the problem that the visual intercom device has single function and cannot meet the intelligent use requirement of a user.

In order to achieve the above object, according to one aspect of the present utility model, there is provided an intelligent building visual intercom apparatus.

The intelligent building visual intercom device according to the utility model comprises: a housing, a circuit board disposed within the housing; the circuit board is provided with a processor, and a touch display, a communicator, a detection chip and a control chip which are electrically connected with the processor; the touch display protrudes from the housing; the detection chip and the control chip are respectively and electrically connected with a detection device or an execution device which is arranged indoors or in an elevator or outdoors.

Further, the detection chip includes: the device comprises a window magnetic detection chip, a smoke concentration detection chip, a fuel gas concentration detection chip and an infrared detection chip;

the control chip includes: a window magnetic control chip, a smoke concentration control chip, a fuel gas concentration control chip and an infrared control chip;

the detection device includes: the device comprises a window magnetic device, a smoke sensor, a gas concentration sensor and an infrared sensor;

the execution device includes: the device comprises a window magnetic alarm, a water spraying device, a gas alarm and an infrared alarm;

the window magnetic detection chip is electrically connected with the window magnetic device, and the smoke concentration detection chip is electrically connected with the smoke sensor; the gas concentration detection chip and the gas concentration sensor; the infrared detection chip is electrically connected with the infrared sensor;

the processor is electrically connected with the window magnetic control chip and the window magnetic alarm; the processor is also electrically connected with the water spraying device of the smoke concentration control chip; the processor is also electrically connected with the gas concentration control chip and the gas alarm; the processor is also electrically connected with the infrared control chip and the infrared alarm.

Further, the detection chip further includes: face identification chip, control chip still includes: the monitoring chip, the executive device further comprises: the monitoring chip is electrically connected with the camera and the processor; the camera includes: cell door camera, gate camera, district enclosure camera.

Further, the control chip further includes: and the gateway controller is connected with household appliances installed indoors or outdoors.

Further, the detection chip further includes: elevator floor detects chip, control chip still includes: elevator floor control chip; the elevator floor control chip is electrically connected with the processor and an elevator of a building.

Further, a virtual key of a one-key call button is arranged on the touch display.

Further, a home mode virtual key, a dining mode virtual key and a game mode virtual key are arranged on the touch display.

Further, the control chip further includes: an intelligent lock control chip; the execution device further comprises an intelligent lock, the processor is electrically connected with the intelligent lock control chip, and the intelligent lock control chip is electrically connected with the intelligent lock.

Further, the method further comprises the following steps: a communication interface electrically connected with the circuit board and protruding out of the shell; the calling device is connected with the intelligent building visual intercom device and is also electrically connected with the entrance guard lock of the unit building; the calling device comprises: the device main part is located the second circuit board of device main part, be equipped with second treater, number button, unit door camera, NFC chip, electric door lock controller, data contrast sensor on the second circuit board.

According to another aspect of the present utility model, there is also provided an intelligent building intercom system, including any one of the above intelligent building visual intercom devices, and an electronic terminal or a terminal processing device or a server wirelessly connected to the intelligent building visual intercom device.

In the embodiment of the utility model, a processor, a touch display, a communicator, a detection chip and a control chip are arranged on a circuit board, the detection chip is electrically connected with a detection device, and the control chip is electrically connected with the control chip and is arranged in the shell through the shell and the circuit board; the circuit board is provided with a processor, and a touch display, a communicator, a detection chip and a control chip which are electrically connected with the processor; the touch display protrudes from the housing; the detection chip and the control chip are respectively electrically connected with a detection device or an execution device which is arranged indoors or in an elevator or outdoors, so that the aim of realizing multiple control through one device is fulfilled, the technical effects of comprehensive functions and convenience in use are realized, and the technical problem that the intelligent use requirement of a user cannot be met due to single function of the visual intercom device is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model, are incorporated in and constitute a part of this specification. The drawings and their description are illustrative of the utility model and are not to be construed as unduly limiting the utility model. In the drawings:

FIG. 1 is a schematic circuit diagram of an intelligent building visual intercom device according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a visual intercom device of the intelligent building according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a calling device according to an embodiment of the present utility model;

fig. 4 is a circuit schematic of a calling device according to an embodiment of the utility model.

Reference numerals

1. A housing; 2. a circuit board; 3. a processor; 4. touching the display; 5. a communicator; 6. a detection chip; 7. a control chip; 8. a detection device; 9. an execution device; 10. a window magnetic detection chip; 11. a smoke concentration detection chip; 12. a gas concentration detection chip; 13. an infrared detection chip; 14. a window magnetic control chip; 15. a smoke concentration control chip; 16. a fuel gas concentration control chip; 17. an infrared control chip; 18. a window magnetic device; 19. a smoke sensor; 20. a gas concentration sensor; 21. an infrared sensor; 22. a window magnetic alarm; 23. a water spraying device; 24. a gas alarm; 25. an infrared alarm; 26. a face recognition chip; 27. a monitoring chip; 28. a camera; 30. a door camera; 31. cell enclosure cameras; 32. a gateway controller; 33. a household appliance; 34. elevator floor detecting chip; 35. elevator floor control chip; 36. one-key call button virtual keys; 37. a home mode virtual key; 38. leaving home mode virtual keys; 39. dining mode virtual keys; 40. virtual keys of game modes; 42. an intelligent lock control chip; 43. an intelligent lock; 44. a communication interface; 45. a calling device; 46. locking a unit building entrance guard; 47. a device body; 48. a second circuit board; 49. a number key; 50. a unit door camera; 51. an NFC chip; 52. a power door lock controller; 53. a data comparison sensor; 54. an electronic terminal; 55. a terminal processing device; 56. a server; 57. a second processor.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the utility model herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present utility model, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present utility model and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present utility model will be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1 to 4, the present utility model relates to an intelligent building visual intercom device, comprising: a housing 1, a circuit board 2 provided in the housing 1; the circuit board 2 is provided with a processor 3, a touch display 4, a communicator 5, a detection chip 6 and a control chip 7 which are electrically connected with the processor 3; the touch display 4 protrudes from the housing 1; the detection chip 6 and the control chip 7 are electrically connected to a detection device 8 or an actuator 9, respectively, installed indoors or outdoors or in an elevator.

Specifically, the casing 1 has the function of protecting and bearing the electronic devices arranged therein, and the function of facilitating the installation of the device on a wall; a circuit board 2 provided in the housing 1 for connecting and fixing the electronic components provided thereon; the processor 3 is arranged on the circuit board 2 and is used for sending a control instruction according to the received signal to control an electronic device electrically connected with the processor 3, wherein the processor 3 is a full-mark A33 chip; the touch display 4 is electrically connected with the circuit board 2, and is used for sending a signal to the processor 3 by touching a virtual key on the touch display 4, and the processor 3 sends a control instruction after processing to control the corresponding control chip 7 to control the execution device 9 to perform corresponding actions; the communicator 5 is used for performing wireless communication or wired communication, so that the device can be in wired connection with the terminal processing equipment 55 or in wireless connection with the electronic terminal 54, and transmits signals sent by the terminal processing equipment 55 or the electronic terminal 54 to the processor 3, or uploads feedback signals processed by the processor 3 to the terminal processing equipment 55 or the electronic terminal 54, and after the processor 3 receives an instruction, the controller chip 7 is controlled by the control instruction to control the execution device 9 to execute or control the touch display 4 to display corresponding real-time data; the detection chip 6 is electrically connected with the processor 3 and the detection device 8 and is used for sending corresponding signals to the processor 3 according to the data measured by the detection device 8; the control chip 7 is electrically connected with the processor 3 and the execution device 9 and is used for controlling the execution device 9 to act according to the control instruction sent by the processor 3; the detection means 8 include, but are not limited to: a window magnetic device 18, a smoke sensor 19, a gas concentration sensor 20, an infrared sensor 21, a temperature and humidity sensor and the like; the execution means 9 include, but are not limited to: a window magnetic alarm 22, a water spraying device 23, a gas alarm 24, an infrared alarm 25, a temperature and humidity display, a monitoring camera 28 and the like; when the device operates, the detection device 8 works and sends measured data to the detection chip 6, the detection chip 6 converts the data into signals which can be identified by the processor 3, and after the processing of the processor 3, a control instruction is sent to control the execution device 9 to perform corresponding actions or control the touch display 4 to display real-time data; or when the virtual key on the touch display 4 is touched, a signal is sent to the processor 3, and the processor 3 controls the execution device 9 to complete corresponding actions or controls the touch display 4 to display corresponding real-time data after processing; or when the communicator 5 receives the signal, the signal is sent to the processor 3 for processing, and the processor 3 controls the executing device 9 to complete corresponding actions or controls the touch display 4 to display corresponding real-time data after processing.

As can be seen from the above description, in the embodiment of the present utility model, the processor 3, the touch display 4, the communicator 5, the detection chip 6, and the control chip 7 are disposed on the circuit board 2, and the detection chip 6 is electrically connected to the detection device 8, and the control chip 7 is electrically connected to the control chip 7, so that the circuit board 2 is disposed in the housing 1 through the housing 1; the circuit board 2 is provided with a processor 3, a touch display 4, a communicator 5, a detection chip 6 and a control chip 7 which are electrically connected with the processor 3; the touch display 4 protrudes from the housing 1; the detection chip 6 and the control chip 7 are respectively electrically connected with the detection device 8 or the execution device 9 which are arranged indoors or in an elevator or outdoors, so that the aim of realizing multiple control through one device is fulfilled, the technical effects of comprehensive functions and convenience in use are realized, and the technical problem that the intelligent use requirement of a user cannot be met due to single function of the visual intercom device is solved.

Preferably, the detection chip 6 includes: window magnetism detection chip 106, smoke concentration detection chip 116, gas concentration detection chip 12, infrared detection chip 13;

the control chip 7 includes: a window magnetic control chip 14, a smoke concentration control chip 157, a fuel gas concentration control chip 16 and an infrared control chip 17;

the detection device 8 includes: a window magnetic device 18, a smoke sensor 19, a gas concentration sensor 20 and an infrared sensor 21;

the execution means 9 includes: a window magnetic alarm 22, a water spraying device 23, a gas alarm 24 and an infrared alarm 25;

the window magnetic detection chip 10 is electrically connected with the window magnetic device 18, and the smoke concentration detection chip 11 is electrically connected with the smoke sensor 19; a gas concentration detection chip 12 and a gas concentration sensor 20; the infrared detection chip 13 is electrically connected with the infrared sensor 21;

the processor 3 is electrically connected with the window magnetic control chip 14 and the window magnetic alarm 22; the processor 3 is also electrically connected with a water spraying device 23 of the smoke concentration control chip 15; the processor 3 is also electrically connected with the gas concentration control chip 16 and the gas alarm 24; the processor 3 is also electrically connected with the infrared control chip 17 and the infrared alarm 25;

the window magnetic device 18 is used for detecting whether doors, windows and the like in a room are opened or not and sending data signals to the window magnetic detection chip 10, when the doors and the windows are opened, the window magnetic device 18 sends signals to the window magnetic detection chip 10, when the doors are not opened within a preset time (such as one day, two days, three days and the like), the window magnetic detection chip 10 sends alarm signals to the processor 3, and the processor 3 controls the communicator 5 to send alarm information to the terminal processing equipment 55 or the electronic terminal 54 after processing, for example, the alarm can be given out in time when the elderly and disabled people in the alone are not out for a long time, so that accidents are avoided as much as possible;

the smoke sensor 19 is used for detecting indoor concentration and transmitting concentration data to the smoke concentration detection chip 11, the smoke concentration detection chip 11 converts the received data into data which can be identified by the processor 3, and the processor 3 controls the smoke concentration control chip 15 to control the water spraying device 23 to spray water or not spray water after processing, or controls the touch display 4 to display the smoke concentration data in real time, so that water is sprayed in time when the smoke concentration exceeds the standard, the life safety is ensured as much as possible, and the property loss is reduced;

the gas concentration sensor 20 is used for detecting the concentration of indoor gas and transmitting concentration data to the gas concentration detection chip 12, the gas concentration detection chip 12 converts the received data into data which can be identified by the processor 3, and the processor 3 controls the gas concentration control chip 16 to control the gas alarm 24 to alarm or not alarm after processing, or controls the touch display 4 to display the gas concentration in real time, or controls the communicator 5 to transmit the gas concentration data to the electronic terminal 54 or the terminal processing equipment 55 or the server 56 in real time, or controls the communicator 5 to send an alarm signal to the electronic terminal 54 or the terminal processing equipment 55 or the server 56, so as to prevent potential safety hazards caused by gas leakage;

the infrared sensor 21 is used for detecting living things moving in a preset area and sending signals to the infrared detection chip 13, the infrared detection chip 13 receives data and converts the data into data signals which can be identified by the processor 3, and the processor 3 processes the data to control the infrared control chip 17 to control the infrared alarm 25 to alarm or not alarm, or control the communicator 5 to transmit alarm information to the electronic terminal 54 or the terminal processing equipment 55 or the server 56 in real time, so that living safety is ensured.

Preferably, the detection chip 6 further includes: a face recognition chip 26 for recognizing whether the person passing through the camera 28 is a homeowner; the control chip 7 further includes: a monitor chip 27 for controlling the camera 28; the execution means 9 further comprises: the camera 28, the monitoring chip 27 is electrically connected with the camera 28 and the processor 3; the camera 28 includes: the unit door camera 50 is electrically connected with the face recognition chip 26 and the entrance guard of the unit building, face information shot by the unit door camera 50 is transmitted to the face recognition chip 26, the face recognition chip 26 converts the face information into information which can be recognized by the processor 3 after processing, and when the recognized face information is consistent with preset owner information, the processor 3 controls the entrance guard to open; the gate camera 30 and the community enclosure camera 31 are used for shooting, the camera 28 is matched with the Ai Ou AI video monitoring system to identify whether the child goes out alone or goes out with strangers and convert the child into signals which can be identified by the processor 3, and when the child goes out, the processor 3 controls the communicator 5 to transmit alarm information to the electronic terminal 54 or the terminal processing equipment 55 or the server 56 in real time so as to realize child safety reminding, and abnormal conditions such as the child goes out alone, is taken away by the strangers and the like can be timely alarmed; the video data captured by the camera 28 may also be retrieved by touching the display 4 or retrieved and viewed by the electronic terminal 54 device.

Preferably, the control chip 7 further comprises: a gateway controller 32, the gateway controller 32 being electrically connected to the processor 3; the gateway controller 32 includes a wireless gateway controller 32 and a wired gateway controller 32, which are connected to an indoor or outdoor-mounted home appliance 33 through a wireless network connection, and which are connected to the indoor or outdoor-mounted home appliance 33 through a wired network through the wired gateway controller 32; the home appliances 33 include, but are not limited to: intelligent locks, televisions, air conditioners, water heaters, refrigerators, washing machines, lamps, curtains, fresh air systems, floor heating, sound boxes, cameras and the like to control the household appliances 33 through touching virtual buttons on the display 4 or through wireless connection of the electronic terminal 54 equipment and the communicator 5 to send control signals; the home scene may be preset on the app of the electronic terminal 54 device and controlled on the touch display 4 or the electronic terminal 54 device.

Preferably, the detection chip 6 further includes: elevator floor detection chip 346, control chip 7 still includes: an elevator floor control chip 35 supporting 485 protocol docking; the elevator floor control chip 35 is electrically connected with the processor 3 and the elevators of the building, and when the virtual keys of the floors on the display 4 are touched, the elevator floor control chip 35 controls the elevators to move to the corresponding floors under the control of the processor 3.

Preferably, the touch display 4 is provided with a one-touch call button virtual key 36 for performing one-touch call service, or washing clothes at the upper door, or controlling an elevator.

Preferably, the touch display 4 is provided with a home mode virtual key 37, a away mode virtual key 38, a dining mode virtual key 39 and a game mode virtual key 40, various modes are preset in the app, after the preset, a control signal is sent to the processor 3 by touching the virtual key on the touch display 4, and the control chip 7 is controlled under the control of the processor 3 to control the executing device 9 to complete corresponding actions.

Preferably, the control chip 7 further comprises: an intelligent lock control chip 42; the control device further comprises an intelligent lock 43, the processor 3 is electrically connected with the intelligent lock control chip 42, and the intelligent lock control chip 42 is electrically connected with the intelligent lock 43; NFC card data, password data, face data and the like can be preset in the intelligent lock 43, and then the door can be opened through card swiping, password and face recognition.

Preferably, the device also comprises a communication interface 44 which is electrically connected with the circuit board 2 and protrudes out of the shell 1, wherein the communication interface 44 is an RJ45 interface and supports the Ethernet 10M/100M, so that the device has strong compatibility and high transmission speed; the calling device 45 is connected with the intelligent building visual intercom device, and the calling device 45 is also electrically connected with the unit building access control lock 46; the calling device 45 includes: the device main body 47, a second circuit board 48 arranged on the device main body 47, and a second processor 57, a digital key 49, a unit door camera 50, an NFC chip 51, an electric door lock controller 52 and a data comparison sensor 53 are arranged on the second circuit board 48; the user can call the visual intercom device of the corresponding floor by pressing the digital key 49, shoot the data of the user by the unit door camera 50, transmit the data to the communicator 5, display the video data on the touch display 4 in real time under the control of the processor 3, and the user can open or not open the door by touching the virtual key on the touch display 4; setting an NFC chip 51, and opening a door by a user through an NFC key preset by an NFC card or a mobile phone; the data comparison sensor 53 can compare the face information of the user in real time to realize face unlocking.

The utility model also provides an intelligent building intercom system, which comprises: the intelligent building visual intercom device is an electronic terminal 54 or a terminal processing device 55 or a server 56 which is wirelessly connected with the intelligent building visual intercom device.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. An intelligent building visual intercom device, which is characterized by comprising: the shell body is provided with a plurality of grooves,

a circuit board disposed within the housing;

the circuit board is provided with a processor, and a touch display, a communicator, a detection chip and a control chip which are electrically connected with the processor;

the touch display protrudes from the housing;

the detection chip and the control chip are respectively and electrically connected with a detection device or an execution device which is arranged indoors or in an elevator or outdoors.

2. The intelligent building visual intercom device of claim 1, wherein the detection chip comprises: the device comprises a window magnetic detection chip, a smoke concentration detection chip, a fuel gas concentration detection chip and an infrared detection chip;

the control chip includes: a window magnetic control chip, a smoke concentration control chip, a fuel gas concentration control chip and an infrared control chip;

the detection device includes: the device comprises a window magnetic device, a smoke sensor, a gas concentration sensor and an infrared sensor;

the execution device includes: the device comprises a window magnetic alarm, a water spraying device, a gas alarm and an infrared alarm;

the window magnetic detection chip is electrically connected with the window magnetic device, and the smoke concentration detection chip is electrically connected with the smoke sensor; the gas concentration detection chip and the gas concentration sensor; the infrared detection chip is electrically connected with the infrared sensor;

the processor is electrically connected with the window magnetic control chip and the window magnetic alarm; the processor is also electrically connected with the water spraying device of the smoke concentration control chip; the processor is also electrically connected with the gas concentration control chip and the gas alarm; the processor is also electrically connected with the infrared control chip and the infrared alarm.

3. The intelligent building visual intercom of claim 1, wherein the detection chip further comprises: face identification chip, control chip still includes: the monitoring chip, the executive device further comprises: the monitoring chip is electrically connected with the camera and the processor; the camera includes: cell door camera, gate camera, district enclosure camera.

4. The intelligent building visual intercom device of claim 1, wherein the control chip further comprises: and the gateway controller is connected with household appliances installed indoors or outdoors.

5. The intelligent building visual intercom of claim 1, wherein the detection chip further comprises: elevator floor detects chip, control chip still includes: elevator floor control chip; the elevator floor control chip is electrically connected with the processor and an elevator of a building.

6. The intelligent building visual intercom device of claim 1, wherein the touch display is provided with a one-touch call button virtual key.

7. The intelligent building visual intercom device according to claim 1, wherein the touch display is provided with a home mode virtual key, a away mode virtual key, a dining mode virtual key and a game mode virtual key.

8. The intelligent building visual intercom device of claim 1, wherein the control chip further comprises: an intelligent lock control chip; the execution device further comprises an intelligent lock, the processor is electrically connected with the intelligent lock control chip, and the intelligent lock control chip is electrically connected with the intelligent lock.

9. The intelligent building visual intercom device of claim 1, further comprising: a communication interface electrically connected with the circuit board and protruding out of the shell; the calling device is connected with the intelligent building visual intercom device and is also electrically connected with the entrance guard lock of the unit building; the calling device comprises: the device main part is located the second circuit board of device main part, be equipped with second treater, number button, unit door camera, NFC chip, electric door lock controller, data contrast sensor on the second circuit board.

10. An intelligent building visual intercom system, comprising: the intelligent building visual intercom set of any of claims 1-9, an electronic terminal or terminal processing device or server wirelessly connected to the intelligent building visual intercom set.