An Internet of Things relay and terminal box and intelligent manhole cover

Abstract

The present invention provides an Internet of Things relay and terminal box and an intelligent manhole cover, which belong to the field of Internet of Things and wireless communication. The Internet of Things relay and terminal box includes a box body and a box bottom cover; one end of the box body is an open end, and the other end is a closed end; the inner cavity of the box body forms a content storage bin, and a sensor adapter board and a data acquisition and communication mainboard are arranged in the content storage bin; the box bottom cover is installed at the open end of the box body, and can seal the content storage bin; an outer storage bin is arranged at the closed end of the box body, and the outer storage bin is not connected to the content storage bin; a wired sensor sub-board is arranged in the outer storage bin; the wired sensor sub-board is connected to the sensor adapter board, and the sensor adapter board is connected to the data acquisition and communication mainboard. The present invention provides an Internet of Things relay and terminal with small size, long service life, extensible sensors, compatibility with various protocols, and convenient maintenance and replacement.

Description

Technical Field

[0001] The present invention belongs to the field of Internet of Things and wireless communication, and specifically relates to an Internet of Things relay and terminal box and an intelligent manhole cover. Background Art

[0002] Currently, IoT relays and terminals are separated, and most of the current IoT relays only complete the near-field networking communication function and do not form a networking relationship with the monitored objects.

[0003] Moreover, the mainboard and sensor of the existing IoT terminal are connected by on-board or connector welding. The sensor and the mainboard are simultaneously exposed to harsh monitoring environments, resulting in a short lifespan and high maintenance costs. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art and to provide an Internet of Things relay and terminal box and an intelligent manhole cover, which have the functions of both relay and terminal, extend the service life, can expand a variety of sensors, and facilitate maintenance and replacement. For the intelligent manhole cover, it can monitor the status of the manhole cover in real time as well as the gas, water, fire and other conditions in the well in real time.

[0005] The present invention is achieved through the following technical solutions:

[0006] A first aspect of the present invention provides an Internet of Things relay and terminal box, the Internet of Things relay and terminal box comprising a box body and a box bottom cover;

[0007] One end of the box body is an open end, and the other end is a closed end;

[0008] The inner cavity of the box body forms a content storage compartment, in which a sensor adapter board and a data acquisition and communication mainboard are arranged; the box bottom cover is installed at the opening end of the box body and can seal the content storage compartment;

[0009] An outer storage compartment is provided at the closed end of the box body, and the outer storage compartment is not connected to the inner storage compartment; a wired sensor sub-board is provided in the outer storage compartment;

[0010] The wired sensor sub-board is connected to the sensor adapter board, and the sensor adapter board is connected to the data acquisition and communication main board.

[0011] A further improvement of the present invention is that a grille cover is provided at the opening end of the outer containing compartment;

[0012] A plurality of grille through holes are formed on the grille cover plate, and liquid or gas can enter the outer containing chamber through the grille through holes.

[0013] A further improvement of the present invention is that a plurality of connecting pieces are embedded on the closed end of the outer containing bin;

[0014] The wired sensor sub-board is arranged on the outer side surface of the closed end of the outer containing bin, and the sensor adapter board is arranged on the inner side surface of the closed end of the outer containing bin;

[0015] The wired sensor sub-board is connected to the sensor adapter board through the connecting piece.

[0016] A further improvement of the present invention is that each connector adopts a spring ejector pin, and both ends of each spring ejector pin are respectively connected to a hot stamping contact;

[0017] The gold stamping contacts at both ends of each spring ejector pin are respectively located on the two side surfaces of the closed end of the outer containing chamber;

[0018] The raised contacts on the wired sensor sub-board are in contact with the gold-stamped contacts on the outer surface of the closed end of the outer containing compartment to achieve electrical connection;

[0019] The raised contacts on the sensor adapter plate contact with the gold-stamped contacts on the inner surface of the closed end of the outer containing compartment to achieve electrical connection.

[0020] A further improvement of the present invention is that a variety of sensor modules are arranged on the wired sensor sub-board;

[0021] The sensor module includes: a gas sensor, an ultrasonic sensor, a Hall switch magnetic limit sensor and / or a float switch.

[0022] A further improvement of the present invention is that the Internet of Things relay and terminal box further includes a wireless sensor sub-board located outside the box body;

[0023] One or more sensor modules and wireless communication modules are arranged on the wireless sensor sub-board;

[0024] The sensor module adopts an ultra-low power consumption sensor module, including: a tilt sensor, a temperature sensor, a water level sensor, a smoke sensor, a CO gas sensor, a methane gas sensor and / or a current sensor;

[0025] The wireless communication module adopts a near field communication module, including a Bluetooth, LORA or ZigBee wireless communication module.

[0026] A further improvement of the present invention is that the data acquisition and communication mainboard is provided with: a data acquisition and processing module and a communication module connected thereto;

[0027] The data acquisition and processing module adopts MCU, and the sensor adapter board is connected to the MCU;

[0028] The communication module includes a long-distance communication module and a near-field communication module;

[0029] The remote communication module adopts 5G, 4G, 3G, 2G and / or NBIOT communication module for communicating with the cloud platform;

[0030] The near field communication module adopts a Bluetooth, LORA or ZigBee wireless communication module for communicating with the wireless sensor daughter board.

[0031] A further improvement of the present invention is that a luminous flux sensor and a displacement motion gyroscope sensor are also arranged on the data acquisition and communication mainboard, and the two are respectively connected to the data acquisition and processing module.

[0032] A further improvement of the present invention is that outward protrusions are arranged around the bottom cover of the box, and a mounting hole is opened on each protrusion.

[0033] A second aspect of the present invention provides a smart manhole cover, which includes a manhole cover body, and the above-mentioned Internet of Things relay and terminal box is installed on the inner surface of the manhole cover body.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] (1) The present invention provides a universal, highly cost-effective IoT relay solution;

[0036] (2) The present invention provides an IoT relay and terminal for various sub-sectors of smart earth and smart city, which is small in size, long in service life, can be extended with sensors, is compatible with various protocols, and is easy to maintain and replace;

[0037] (3) The smart manhole cover equipped with an IoT relay and terminal box has the following advantages: First, the displacement motion gyroscope sensor can be used to monitor and alarm in real time when the manhole cover is damaged, shifted, tilted, or lost; second, the gas sensor can be used to detect toxic and harmful gases underground, providing safety protection for construction workers working underground; third, the gas sensor can be used to monitor methane gas and detect leakage accidents in natural gas pipelines to give timely alarms; fourth, the water level sensor can be used to give alarms for abnormal conditions in rainwater, sewage, heat, and water supply pipelines; fifth, the temperature, current, and smoke sensors can be used to predict abnormal fire alarms for power cables and transmission pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the three-dimensional structure of the Internet of Things relay and terminal box of the present invention;

[0039] Figure 2 A schematic diagram of the top view of the IoT relay and terminal box of the present invention;

[0040] Figure 3 A schematic diagram of the structure of the Internet of Things relay and terminal box of the present invention when viewed from above;

[0041] Figure 4 A perspective structural diagram of a box body in the Internet of Things relay and terminal box of the present invention;

[0042] Figure 5 A schematic diagram of the top view of the box body in the Internet of Things relay and terminal box of the present invention;

[0043] Figure 6 A schematic diagram of the connection structure of a wired sensor sub-board, a wireless sensor sub-board, and a data acquisition and communication main board in the Internet of Things relay and terminal box of the present invention. DETAILED DESCRIPTION

[0044] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0045] In order to solve the problem of high scalability of IoT products, the need for both wireless and wired data acquisition and communication, and a long-distance configurable universal relay, the present invention provides an IoT relay and terminal box, which separates the data acquisition and communication mainboard from the sensor sub-board, and encapsulates the data acquisition and communication mainboard in a box body that meets the IP68 waterproof technical requirements.

[0046] Specifically, Figures 1 to 6 As shown, the Internet of Things relay and terminal box of the present invention includes a box body 1, a box bottom cover 3 and a grille cover plate 2, one end of the box body 1 is an open end, and the other end is a closed end; the box bottom cover 3 is installed at the open end of the box body.

[0047] like Figure 4 As shown, the inner cavity of the box body 1 forms an inner storage compartment 101, and a sensor adapter board 8, a battery, and a data acquisition and communication mainboard 6 are arranged in the inner storage compartment 101. After the box bottom cover 31 is installed on the opening end of the box body, the inner storage compartment 101 forms a sealed space, that is, an IP68 waterproof box is formed, and external substances cannot enter the inner storage compartment 101.

[0048] An outer storage bin 102 is provided at the closed end of the box body 1, and the outer storage bin 102 is completely isolated from the inner storage bin, and the two are not connected. Furthermore, a grille cover plate 2 is provided at the open end of the outer storage bin 102, and a plurality of grille through holes are provided on the grille cover plate 2. After the grille cover plate 2 is installed at the open end of the outer storage bin 102, the outer storage bin 102 forms a semi-sealed cavity, and liquid or gas can enter the outer storage bin 102 through the grille through holes on the grille cover plate 2. A wired sensor sub-board 5 is provided in the outer storage bin 102, and the wired sensor sub-board 5 is connected to the sensor adapter board 8, and the sensor adapter board 8 is connected to the data acquisition and communication main board 6.

[0049] Embodiments of the present invention are as follows:

[0050] [Example 1]

[0051] A groove can be formed on the closed end of the box body 1 as the outer storage bin 102, and the bottom of the groove is the closed end of the outer storage bin 102. Alternatively, a small box body with one end open and the other end closed can be embedded in the inner cavity of the box body 1, and the open end of the small box body is located at the closed end of the box body 1, and the closed end of the small box body is located in the inner cavity of the box body (i.e., the inner storage bin 101). The box body 1 can be in various shapes such as square and round.

[0052] [Example 2]

[0053] like Figure 4 and Figure 5 As shown, a plurality of connectors 7 are embedded on the closed end of the outer containing chamber 101, each connector 7 is a spring pin, and both ends of each spring pin are respectively connected to hot stamping contacts, and the hot stamping contacts at both ends of each spring pin are respectively located on the two side surfaces of the closed end of the outer containing chamber.

[0054] The spring ejector is an existing product and will not be described in detail here. The spring ejector is embedded in the closed end of the outer receiving chamber 102. The spring ejector and the closed end are interference fit to ensure good sealing. The hot stamping contacts on both sides are respectively located on the surfaces of both sides of the closed end. The spring ejector can increase the contact strength and ensure that the raised contacts on the circuit board and the hot stamping contacts are tightly pressed together.

[0055] The wired sensor sub-board 5 is arranged on the outer surface of the closed end of the outer accommodating bin 102, and the raised contacts on the wired sensor sub-board 5 contact with the hot stamping contacts on the outer surface of the closed end to achieve electrical connection. The sensor adapter board 8 is arranged on the inner surface of the closed end of the outer accommodating bin, and the raised contacts on the sensor adapter board 8 contact with the hot stamping contacts on the inner surface of the closed end to achieve electrical connection. That is, the wired sensor sub-board 5 is located in the outer accommodating bin 102, and the sensor adapter board 8 is located in the inner accommodating bin 101, and the two are electrically connected through the connector 7. The sensor adapter board 8 plays a role of adapter. On the one hand, it is connected to the wired sensor sub-board 5 through a spring ejector pin, and on the other hand, it is connected through a variety of existing connectors (existing connection structures, in Figure 4 ) is connected to the data acquisition and communication main board 6, thus realizing the wired connection between the wired sensor sub-board 5 and the data acquisition and communication main board 6, and because the wired sensor sub-board 5 is located in the outer storage compartment, and the data acquisition and communication main board 6 is located in the inner storage compartment, it is ensured that the wired sensor sub-board 5 is in contact with the outside world, while the data acquisition and communication main board 6 is isolated from the outside world.

[0056] Specifically, the wired sensor sub-board and the sensor adapter board can be fixed to the outer surface and inner surface of the closed end of the outer storage compartment by screws, respectively, and the data acquisition and communication main board 6 is fixed to the inner surface of the closed end of the box body by screws. Furthermore, if the size of the data acquisition and communication main board 6 is relatively large, a hole can be opened on the data acquisition and communication main board 6 to facilitate the closed end of the outer storage compartment to pass through the hole.

[0057] [Example 3]

[0058] The wired sensor sub-board 5 is provided with a variety of sensor modules, and the sensor modules adopt the existing multiple sensor modules, and the corresponding sensor modules can be selected according to actual needs. Each sensor module is connected to the sensor adapter board through a gold-stamping contact.

[0059] For example, in order to monitor the situation downhole, the sensors that can be set on the wired sensor sub-board include: gas sensor 501, ultrasonic sensor 502 ( Figure 6 Only these two are shown in the figure, and other sensors are not shown), Hall switch magnetic limit sensor, float switch, etc. Gas sensors are used to monitor the concentration of flammable or harmful gases such as carbon monoxide, methane, and hydrogen sulfide. Ultrasonic sensors, Hall switch magnetic limit sensors, and float switches can monitor water level height, liquid flow, flow rate, and other characteristics. If used to monitor other environments, the corresponding sensors can be set on the wired sensor sub-board.

[0060] Specifically, an I2C bus may be provided on the wired sensor daughter board 5. The I2C bus is a universal high-speed serial port bus that can connect hundreds of devices. Therefore, more sensor modules may be extended and connected on the wired sensor daughter board as needed.

[0061] [Example 4]

[0062] The IoT relay and terminal box further includes a wireless sensor sub-board 10 located outside the box body, on which a sensor module 1002 and a wireless communication module 1001 are arranged. The sensor module adopts an ultra-low power consumption sensor module, which may include: tilt, temperature, water level, smoke, CO gas, methane gas or current sensor module ( Figure 6 Only one sensor module 1002 is drawn in the figure, and other sensor modules are not drawn. ), these modules are all commercially available modules, and the present invention integrates these commercially available modules into the wireless sensor daughter board. The sensor module is used to collect various data, and the wireless communication module is used to communicate with the data acquisition and communication main board located in the box body, and send the data collected by the sensor module to the data acquisition and communication main board. One sensor or multiple sensors can be set on the wireless sensor daughter board.

[0063] Specifically, the wireless communication module adopts an existing near field communication module, such as a Bluetooth (BT) wireless communication module or a LORA, ZigBee wireless communication module. Each wireless sensor sub-board is equivalent to an independent Bluetooth device, which has its own independent sensor, and the communication between it and the data acquisition communication mainboard is similar to the communication between a Bluetooth headset and a mobile phone.

[0064] The wireless sensor sub-board 10 can be set at any position outside the box body that can ensure the communication distance, so as to collect data at relevant positions. For example, the wireless sensor sub-board is set at a certain position of the underground pipeline, and the wireless sensor sub-board sends the collected data to the data acquisition communication main board through wireless communication. At this time, each wireless sensor sub-board acts as a monitoring terminal and communicates wirelessly with the wireless communication main module in the box body. In this way, the Internet of Things relay and terminal box of the present invention can realize a wider range and more types of monitoring functions.

[0065] Furthermore, a battery module is connected to the wireless sensor sub-board 10 to supply power to the wireless sensor sub-board. The wireless sensor sub-board can also be arranged in an independent sensor box, and the sensor box can be installed at the location to be monitored.

[0066] [Example 5]

[0067] like Figure 6As shown, the data acquisition and communication mainboard 6 is provided with: a data acquisition and processing module (MCU) 601 and a communication module and a power management module (the existing power management module can be used) connected thereto respectively. Figure 6 not shown).

[0068] The data acquisition and processing module 601 is responsible for data acquisition, calculation, packaging, and control of the communication module, and communicates with the cloud terminal server and the database to realize data transmission and reception. The data acquisition and processing module 601 can use an existing MCU, and can write related programs according to actual needs. The related programs are not within the scope of protection of the present invention. The sensor adapter board is connected to the MCU.

[0069] The communication module includes a long-distance communication module 602 and a near-field communication module 603. The long-distance communication module 602 can adopt a variety of existing long-distance communication modules such as 5G, 4G, 3G, 2G and / or NBIOT (narrowband Internet of Things) for communicating with a variety of cloud platforms, such as JD Cloud, China Mobile, Telecom Tianyi Cloud Platform, etc. The near-field communication module 603 adopts a variety of existing near-field communication modules such as Bluetooth (BT) wireless communication module or LORA or ZigBee wireless communication module for communicating with the wireless sensor sub-board 10. By adopting these communication modules, the present invention can be compatible with 5G, 4G, 3G, 2G, NBIOT and compatible with Bluetooth, LORA, ZigBee and other protocols.

[0070] Furthermore, a light flux sensor 604 and a displacement motion gyro sensor 605 are also provided on the data acquisition and communication mainboard 6, and the two are respectively connected to the data acquisition and processing module. Both sensors are existing sensors, and are used to monitor the changes in ambient light outside the box and the displacement and tilt angle of the object installed in the box. These two sensors do not need to contact with liquid or gas, so they do not need to be installed in the outer storage bin. Installing them in the inner storage bin can ensure that these two sensors are not corroded by liquid or gas, which is conducive to ensuring the working environment and extending the service life.

[0071] The wired sensor sub-board, the wireless sensor sub-board, the sensor adapter board, and the data acquisition and communication main board all adopt integrated circuit boards.

[0072] A central control platform can be further designed to visualize the data collected by each box, analyze the data of various sensors, alarm, assign tasks, generate reports, etc. A mobile management terminal or user terminal can be further designed, and a small program and / or light application can be set on the mobile management terminal or user terminal for alarm processing, maintenance records, navigation, etc.

[0073] [Example 6]

[0074] The grille holes on the grille cover plate 2 can be in various shapes such as circular and rectangular. The grille holes connect the inner cavity of the outer storage compartment with the outside, so that external gas, liquid, etc. can enter the inner cavity of the outer storage compartment 102 through the grille holes, which is convenient for each sensor in the outer storage compartment 102 to sense gas, liquid, temperature, etc. At the same time, since the outer storage compartment 102 is completely isolated from the inner storage compartment 101, the two are closed and not connected, so liquid and gas will not enter the inner storage compartment 101, thus ensuring that the data acquisition communication mainboard 6 and the sensor adapter board 8 will not be affected by these liquids and gases, thereby improving the service life of the Internet of Things relay and terminal box. Preferably, the grille holes are relatively dense, which can prevent insects, debris, etc. from entering the outer storage compartment.

[0075] The grille cover plate 2 is fixed to the open end of the outer containing compartment 102 by screwing. Figure 1 and Figure 2 In the illustrated embodiment, the screws are installed at the center of the grille cover 2. The screws may also be installed at other positions of the grille cover 2 as required, such as at both sides or around the grille through hole.

[0076] [Example 7]

[0077] Preferably, Figure 5 As shown, a plurality of protrusions are provided on the inner side wall of the box body 1, and threaded holes 9 are provided on the protrusions, and the central axis of the threaded holes 9 is perpendicular to the closed end of the box body. A hole is provided on the bottom cover 3 corresponding to each protrusion on the box body, and the bottom cover 3 is fixed to the open end of the box body 1 by inserting screws into the holes. Furthermore, an annular sealing groove is provided on the inner wall of the open end of the box body 1, and a sealing ring is installed in the annular sealing groove, and the sealing between the box body 1 and the bottom cover 3 is achieved by the sealing ring.

[0078] [Embodiment 8]

[0079] Furthermore, a battery bracket is provided in the content storage compartment 101 for installing and fixing batteries to simultaneously power the data acquisition communication mainboard and the sensor adapter board. The battery bracket can be an existing bracket capable of installing batteries, and the position of the battery bracket can be designed according to the shape and size of the box body, which will not be described in detail here.

[0080] The sensor daughter board of the present invention can be expanded to weld different sensors, and the data acquisition communication main board 6 has both near-field local area network communication (realized by Bluetooth, LORA, etc.) and long-range wide area network communication (realized by 5G, 4G, 3G, 2G, NBiot communication modules) functions.

[0081] [Example 9]

[0082] Furthermore, outward protrusions 4 are provided around the bottom cover 3 of the box, and a mounting hole is opened on each protrusion 4, so that it is convenient to install the box body of the Internet of Things relay and terminal box at a required installation position.

[0083] The Internet of Things relay and terminal box of the present invention was first applied in the 5G+ smart manhole cover project. As a relay system, it can transmit communications, electricity, public security, natural gas, rainwater and sewage, water supply, fire protection, heat and other manholes and their underground accessories, such as communication cables, power cables, water level, temperature, current, smoke sensors, water level, sewage, thermal leakage, water supply pressure, fire water pressure and other resources, through the Bluetooth data sampling sensor module, using near-field communication technology to form a network, and through the 5G+ smart manhole cover relay, it can report user-related data information in real time and regularly, which has immeasurable social and economic benefits for ensuring national communication security, urban underground power transmission safety, effective utilization of underground resources, prevention of municipal construction accidents, and urban waterlogging.

[0084] The present invention also provides an intelligent manhole cover, which includes a manhole cover body, on which a threaded hole is provided, and after the outer surface of the box bottom cover is brought into contact with the lower surface of the manhole cover body, a bolt is screwed into the mounting hole of the box bottom cover, and the bolt is screwed into the threaded hole of the manhole cover, so that the entire Internet of Things relay and terminal box is fixed on the lower surface of the manhole cover body. After the intelligent manhole cover is installed at the wellhead, the Internet of Things relay and terminal box is located below the manhole cover body, and can monitor various conditions in the well and various states of the manhole cover.

[0085] The present invention has the following advantages:

[0086] 1. The data acquisition communication mainboard has a long life, the sensor sub-board is easy to disassemble, and the maintenance cost is extremely low. The IoT relay mainboard and the sensor adapter board are designed separately. Ensure that the relay mainboard, battery, etc. meet the IP68 moisture-proof and waterproof design goals. The wired sensor sub-board communicates with the mainboard through a connector, no welding is required, low maintenance cost, and easy disassembly.

[0087] 2. Easy to expand, near-field networking. When there are multiple types and quantities of objects that need to be monitored, the wireless sensor daughter board can be used to network up to thousands of monitored objects at close range, and the data of the monitored objects (such as temperature, smoke, current, water level, harmful gases, etc.) can be processed and judged, and screened according to the judgment criteria of abnormal conditions (for example, when the carbon monoxide concentration is greater than or equal to 2%, an alarm message needs to be sent to the cloud server, and when the methane concentration is greater than or equal to 50ppm, an alarm message needs to be sent to the cloud server. The tilt, displacement, temperature, water level, and smoke can all set alarm thresholds remotely. When the conditions are met, an alarm can be triggered, and the threshold size can be set according to actual needs) uploaded to the cloud server, and the final data is visualized on the central control end and the mobile end applet or app.

[0088] 3. A lightweight operating system is installed in the MCU of the present invention, and all the following system parameters can be configured remotely.

[0089] a) IP address remote configuration

[0090] b) Light sensing sampling range configuration

[0091] c) Tilt offset configuration

[0092] d) Vibration sampling period 50us to 1.25s

[0093] e)Multi-protocol support

[0094] f) Sleep cycle can be adjusted remotely

[0095] g) etc. to expand new function parameters

[0096] 4. The present invention is compatible with systems that support multiple protocols such as Coap, MQTT, LWM2M, HTTP, AEP, ONENET, etc., and is convenient for direct connection with various types of smart city, smart construction site and other platforms.

[0097] 5. The present invention can integrate compatible far-field communication technologies such as 5G, 4G, 3G, 2G, NBIOT, and near-field communication technologies such as Bluetooth, LORA, and ZigBee.

[0098] In summary, the Internet of Things relay and terminal box of the present invention has both relay and terminal functions. The relay is used to realize communication and data transmission functions, and the terminal is used to realize data acquisition and control functions. The Internet of Things relay and terminal box has communication capabilities. It can be connected to a variety of different sensors through a data bus such as I2C, and can also be connected to a variety of different wireless terminals through near-field communication technologies such as Bluetooth, Lora, Zigbee, etc. The present invention has on-site data acquisition and computing capabilities, supports the commonly used communication protocols (Coap, LWM2M, Https, TCP, etc.) of the far-field Internet of Things, and can be remotely configured for the thresholds, response frequencies, sleep cycles, etc. of various sensors. The present invention can be combined with different sensors to form relay and terminal product systems in different Internet of Things scenarios.

[0099] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0100] In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0101] Finally, it should be explained that the above technical solution is only one implementation method of the present invention. For those skilled in the art, it is easy to make various types of improvements or modifications based on the application methods and principles disclosed in the present invention, and it is not limited to the method described in the above specific implementation method of the present invention. Therefore, the method described above is only preferred and does not have a restrictive meaning.

Claims

1. An Internet of Things relay and terminal box, characterized in that: The Internet of Things relay and terminal box includes a box body and a box bottom cover; One end of the box body is an open end, and the other end is a closed end; The inner cavity of the box body forms a content storage compartment, in which a sensor adapter board and a data acquisition and communication mainboard are arranged; the box bottom cover is installed at the opening end of the box body and can seal the content storage compartment; An outer storage compartment is provided at the closed end of the box body, and the outer storage compartment is not connected to the inner storage compartment; a wired sensor sub-board is provided in the outer storage compartment; The wired sensor sub-board is connected to the sensor adapter board, and the sensor adapter board is connected to the data acquisition and communication main board; A plurality of connecting pieces are embedded on the closed end of the outer containing bin; The wired sensor sub-board is arranged on the outer side surface of the closed end of the outer containing bin, and the sensor adapter board is arranged on the inner side surface of the closed end of the outer containing bin; The wired sensor sub-board is connected to the sensor adapter board via the connecting piece; A grille cover is provided at the open end of the outer containing compartment; A plurality of grille through holes are formed on the grille cover plate, and liquid or gas can enter the outer containing chamber through the grille through holes; Each connector uses a spring ejector pin, and both ends of each spring ejector pin are connected with hot stamping contacts; The gold stamping contacts at both ends of each spring ejector pin are respectively located on the two side surfaces of the closed end of the outer containing chamber; The raised contacts on the wired sensor sub-board are in contact with the gold-stamped contacts on the outer surface of the closed end of the outer containing compartment to achieve electrical connection; The raised contacts on the sensor adapter plate contact with the gold-stamped contacts on the inner surface of the closed end of the outer containing compartment to achieve electrical connection.

2. The Internet of Things relay and terminal box according to claim 1, characterized in that: A variety of sensor modules are arranged on the wired sensor sub-board; The sensor module includes: an ultrasonic sensor, a gas sensor, a Hall switch magnetic limit sensor and / or a float switch.

3. The Internet of Things relay and terminal box according to claim 1, characterized in that: The Internet of Things relay and terminal box further includes a wireless sensor sub-board located outside the box body; One or more sensor modules and wireless communication modules are arranged on the wireless sensor sub-board; The sensor module adopts an ultra-low power consumption sensor module, including: a tilt sensor, a temperature sensor, a water level sensor, a smoke sensor, a CO gas sensor, a methane gas sensor and / or a current sensor; The wireless communication module adopts a near field communication module, including a Bluetooth, LORA or ZigBee wireless communication module.

4. The Internet of Things relay and terminal box according to claim 3, characterized in that: The data acquisition and communication mainboard is provided with: a data acquisition and processing module and a communication module connected thereto; The data acquisition and processing module adopts MCU, and the sensor adapter board is connected to the MCU; The communication module includes a long-distance communication module and a near-field communication module; The remote communication module adopts 5G, 4G, 3G, 2G and / or NBIOT communication module for communicating with the cloud platform; The near field communication module adopts a Bluetooth, LORA or ZigBee wireless communication module for communicating with the wireless sensor daughter board.

5. The Internet of Things relay and terminal box according to claim 4, characterized in that: A luminous flux sensor and a displacement motion gyroscope sensor are also arranged on the data acquisition and communication mainboard, and the two are respectively connected to the data acquisition and processing module.

6. The Internet of Things relay and terminal box according to claim 1, characterized in that: Outward protrusions are arranged around the bottom cover of the box, and a mounting hole is opened on each protrusion.

7. An intelligent manhole cover, characterized in that: The smart manhole cover comprises a manhole cover body, and an Internet of Things relay and terminal box as described in any one of claims 1 to 6 is installed on the inner surface of the manhole cover body.

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