A shared power bank combination cabinet and communication transmission control method

Abstract

The present invention discloses a shared power bank combination cabinet and a communication transmission control method, comprising: a combination cabinet host and a first slave; the combination cabinet host is internally integrated with a host control module and a communication module; the first slave includes a first control module, a first identification module, a second identification module, a first communication module, and a first motor drive module; the first identification module, the second identification module, the first communication module, and the first motor drive module are respectively electrically connected to the first control module; the first identification module provides the host control module with an access signal of the first slave; the first communication module is used to realize communication and data transmission between the first slave and the combination cabinet host; and the first motor drive module is used to drive multiple shared power banks in the first slave to pop out of the combination cabinet. The shared power bank combination cabinet provided by the present invention has the advantages of strong scalability and reliable communication transmission.

Description

Technical Field

[0001] The present invention relates to the technical field of power banks, and in particular to a shared power bank combination cabinet and a communication transmission control method. Background Art

[0002] In the era of the shared Internet of Things (IoT), shared power banks, as charging rental devices, have brought significant convenience to people's work and entertainment lives. Most existing shared power banks are integrated into cabinets, which only provide a very limited number of power banks, impacting the user experience. Furthermore, existing shared power bank cabinets fail to implement more rational, intelligent, and flexible allocation of shared resources like power banks. For example, when shared power bank cabinets in a certain area experience high usage and traffic, sales representatives can only conduct surveys to identify areas experiencing high usage and subsequently increase the number of power banks in the cabinets. While this approach can address the issue, it lacks centralized management, occupies a large area, and wastes manpower and resources. Furthermore, existing shared power bank cabinets often use one-to-many communication buses, such as bus-type protocols like CAN, which can be more costly and complex to develop. This can sometimes lead to inaccurate control of the shared cabinets, resulting in slaves collectively uploading bus data or reporting errors, making them unable to keep up with the times and meet the demands of intelligent services. Therefore, developing a reliable shared power bank cabinet has become an urgent challenge for those skilled in the art. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a shared power bank combination cabinet and a communication transmission control method in response to the above-mentioned defects of the prior art.

[0004] In the first aspect, the present invention discloses a shared power bank combination cabinet, including a combination cabinet host and a first slave; the combination cabinet host is internally integrated with a host control module and a communication module; the first slave includes a first control module, a first identification module, a second identification module, a first communication module and a first motor drive module; the first identification module, the second identification module, the first communication module and the first motor drive module are electrically connected to the first control module respectively; the first identification module provides the host control module with an access signal of the first slave; the first communication module is used to realize communication data transmission between the first slave and the combination cabinet host; the first motor drive module is used to drive multiple shared power banks in the first slave to pop out of the combination cabinet.

[0005] Preferably, the shared power bank combination cabinet also includes a second slave machine; the second slave machine includes a second control module, a third identification module, a second communication module and a second motor drive module; the second communication module and the second motor drive module are electrically connected to the second control module respectively; the second communication module is used to realize communication and data transmission between the second slave machine and the combination cabinet host; the second identification module is used to provide the first control module with an access signal of the second slave machine.

[0006] Preferably, the shared power bank combination cabinet also includes a third slave machine; the third slave machine includes a third control module, a fourth identification module, a third communication module and a third motor drive module; the fourth identification module, the third communication module and the third motor drive module are electrically connected to the third control module respectively; the third communication module is used to realize communication and data transmission between the third slave machine and the combination cabinet host; the third identification module is used to provide the second control module with an access signal of the third slave machine.

[0007] Preferably, the first identification module includes a first seat, a first resistor, a second resistor, a third resistor, a first transient suppression diode, a second transient suppression diode and a third transient suppression diode; the first end of the first seat is electrically connected to the first end of the first resistor and the first end of the first transient suppression diode, respectively, the second end of the first resistor is electrically connected to the host control module, the second end of the first seat is electrically connected to the first end of the second resistor and the first end of the second transient suppression diode, respectively, the first end of the second resistor is electrically connected to the host control module, the third end of the first seat is electrically connected to the first end of the third resistor and the first end of the third transient suppression diode, respectively, the second end of the third resistor is electrically connected to the host control module, the second end of the first transient suppression diode, the second end of the second transient suppression diode and the second end of the third transient suppression diode are grounded.

[0008] Preferably, the second identification module includes a second seat, a fourth resistor, a fourth transient suppression diode, a fifth transient suppression diode and a second transient suppression diode; the first end of the second seat is electrically connected to the first end of the fourth transient suppression diode and the first control module, respectively, the second end of the second seat is electrically connected to the first end of the fifth transient suppression diode and the first control module, respectively, the third end of the second seat is electrically connected to the first end of the sixth transient suppression diode and the first control module, the fourth end of the third seat is electrically connected to the first end of the fourth resistor, the second end of the fourth resistor is electrically connected to the first control module, the second end of the fourth transient suppression diode, the second end of the fifth transient suppression diode and the second end of the sixth transient suppression diode are grounded.

[0009] Preferably, the first motor drive module includes a solenoid valve drive chip, a motor, a fifth resistor, a sixth resistor, a first capacitor and a second capacitor; the first end of the solenoid valve drive chip is electrically connected to the first control module through the fifth resistor, the second end of the solenoid valve drive chip is grounded, the third end of the solenoid valve drive chip is electrically connected to the first control module through the sixth resistor, the fourth end of the solenoid valve drive chip is electrically connected to the first end of the first capacitor, the first end of the second capacitor and the input power supply respectively, the second end of the first capacitor and the second end of the second capacitor are grounded, the fifth end of the solenoid valve drive chip is electrically connected to the first end of the motor, the sixth end of the solenoid valve drive chip is electrically connected to the first end of the motor, and the third and fourth ends of the motor are grounded.

[0010] In a second aspect, the present invention further discloses a communication transmission control method, including a shared power bank combination cabinet as described in the first aspect, the communication transmission control method comprising:

[0011] After power-on, control the master unit of the combination cabinet to send a first analog pulse signal to the first slave unit;

[0012] controlling the second identification module to obtain an access signal of a second slave device according to the first analog pulse signal;

[0013] Modify the address bit of the second slave machine, and send the address bit and the SN serial number of the second slave machine to the RX communication terminal of the combination cabinet master through the TX communication terminal of the second slave machine;

[0014] Controlling the combined cabinet to send a second analog pulse signal to the second slave;

[0015] controlling the third identification module to obtain an access signal of a third slave device according to the first analog pulse signal and the second analog pulse signal;

[0016] Modify the address bit of the third slave, and send the address bit and the SN serial number of the third slave to the RX communication terminal of the combination cabinet master through the TX communication terminal of the third slave;

[0017] The total level of the equipment is obtained, and the combination cabinet is controlled to poll the data of multiple slaves according to the address bits and SN serial numbers of the multiple slaves to report the communication data.

[0018] A shared power bank combination cabinet of the present invention has the following beneficial effects. A shared power bank combination cabinet and a communication transmission control method disclosed in the present invention include: a combination cabinet host and a first slave; a host control module and a communication module are integrated inside the combination cabinet host; the first slave includes a first control module, a first identification module, a second identification module, a first communication module and a first motor drive module; the first identification module, the second identification module, the first communication module and the first motor drive module are electrically connected to the first control module respectively; the first identification module provides the host control module with an access signal of the first slave; the first communication module is used to realize communication data transmission between the first slave and the combination cabinet host; the first motor drive module is used to drive multiple shared power banks in the first slave to pop out of the combination cabinet. The second identification module of the present invention is used to provide the first control module with an access signal of the second slave. Therefore, the shared power bank combination cabinet of the present invention can more reasonably and flexibly allocate shared power bank resources. When the cloud platform data analysis shows that a certain area is under-utilized, the number of slave layers can be increased; if the analysis shows that a certain area is under-used, the number of layers can be reduced, thereby intelligently and rationally allocating resources and reducing floor space. In addition, the present invention uses the universal serial data bus of the communication module to sequentially access data with multiple communication modules of each slave, ensuring orderly data transmission, avoiding bus data confusion, orderly and simple communication, and low development cost. Therefore, the shared power bank combination cabinet provided by the present invention has the advantages of strong scalability and reliable communication transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work.

[0020] Figure 1 This is a principle block diagram of a shared power bank combination cabinet according to a preferred embodiment of the present invention;

[0021] Figure 2 This is a principle block diagram of a shared power bank combination cabinet according to another preferred embodiment of the present invention;

[0022] Figure 3 This is a structural diagram of a shared power bank combination cabinet according to a preferred embodiment of the present invention;

[0023] Figure 4 This is a circuit diagram of a first identification module of a shared power bank combination cabinet in a preferred embodiment of the present invention;

[0024] Figure 5 This is a circuit diagram of a second identification module of a shared power bank combination cabinet in a preferred embodiment of the present invention;

[0025] Figure 6 This is a circuit diagram of a first motor drive module of a shared power bank combination cabinet in a preferred embodiment of the present invention;

[0026] Figure 7 This is a flow chart of a communication transmission control method for a first motor drive module of a shared power bank combination cabinet according to a preferred embodiment of the present invention;

[0027] Figure 8 It is a flow chart of a communication transmission control method of a first motor drive module of a shared power bank combination cabinet in another preferred embodiment of the present invention. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the following will be a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work shall fall within the scope of protection of the present invention.

[0029] Example 1

[0030] The preferred embodiment of the present invention is as follows Figure 1As shown, it includes a combination cabinet host 1 and a first slave 2; the combination cabinet host 1 is internally integrated with a host control module 11 and a communication module 12; the first slave 2 includes a first control module 21, a first identification module 22, a second identification module 23, a first communication module 24 and a first motor drive module 25; the first identification module 22, the second identification module 23, the first communication module 24 and the first motor drive module 25 are electrically connected to the first control module 21 respectively; the first identification module 22 provides the host control module 11 with an access signal of the first slave 2; the first communication module 24 is used to realize communication data transmission between the first slave 2 and the combination cabinet host 1; the first motor drive module 25 is used to drive multiple shared power banks in the first slave 2 to pop out of the combination cabinet. Therefore, the shared power bank combination cabinet of the present invention can more reasonably and flexibly allocate shared power bank resources. When the cloud platform data analysis shows that a certain area is under-utilized, the number of slave layers can be increased; if the analysis shows that a certain area is under-used, the number of layers can be reduced, thereby intelligently and rationally allocating resources and reducing floor space. In addition, the present invention uses the universal serial data bus of the communication module to sequentially access data with multiple communication modules of each slave, ensuring orderly data transmission, avoiding bus data confusion, orderly and simple communication, and low development cost. Therefore, the shared power bank combination cabinet provided by the present invention has the advantages of strong scalability and reliable communication transmission.

[0031] Preferably, see Figure 2 and Figure 3 The shared power bank combination cabinet also includes a second slave 3; the second slave 3 includes a second control module 31, a third identification module 32, a second communication module 33 and a second motor drive module 34; the third identification module 32, the second communication module 33 and the second motor drive module 34 are respectively electrically connected to the second control module 31; the second identification module 25 is used to provide the first control module 21 with an access signal of the second slave 3.

[0032] In a preferred embodiment, the shared power bank combination cabinet also includes a third slave machine; the third slave machine includes a third control module, a fourth identification module, a third communication module and a third motor drive module; the fourth identification module, the third communication module and the third motor drive module are respectively electrically connected to the third control module; the third identification module is used to provide the second control module with an access signal of the third slave machine.

[0033] Preferably, see Figure 4The first identification module 22 includes a first socket J1, a first resistor R349, a second resistor R350, a third resistor R351, a first transient suppression diode TVS31, a second transient suppression diode TVS30, and a third transient suppression diode TVS29; the first end of the first socket J1 is electrically connected to the first end of the first resistor R349 and the first end of the first transient suppression diode TVS31, the second end of the first resistor R349 is electrically connected to the UR0_TX end of the host control module 11, the second end of the first socket J1 is electrically connected to the first end of the second resistor R350 and the first end of the second transient suppression diode TVS30, the first end of the second resistor R350 is electrically connected to the UR0_RX end of the host control module 11, the third end of the first socket J1 is electrically connected to the first end of the third resistor R351 and the first end of the third transient suppression diode TVS29, the third resistor R351 The second end of the first transient suppressor diode (TVS31), the second end of the second transient suppressor diode (TVS30), and the second end of the third transient suppressor diode (TVS29) are electrically connected to the HUB_STATS terminal of the host control module 11. It will be appreciated that, in this embodiment, the first identification module 22 is used to implement communication and data transmission between the first slave device 2 and the host control module 11. In another preferred embodiment, the HUB_STATS terminal of the host control module 11 is used to summarize the number of connected cabinet slaves.

[0034] Preferably, see Figure 5The second identification module 25 includes a second socket J2, a fourth resistor R356, a fourth transient suppression diode TVS35, a fifth transient suppression diode TVS34 and a second transient suppression diode TVS30; the first end of the second socket J2 is electrically connected to the first end of the fourth transient suppression diode TVS35 and the M_UART_TX end of the first control module 21, and the second end of the second socket J2 is electrically connected to the first end of the fifth transient suppression diode TVS34 and the M_UART_RX end of the first control module 21. The third end of the second socket J2 is electrically connected to the first end of the sixth transient suppression diode TVS32 and the M_STATS_IO terminal of the first control module 21, respectively. The fourth end of the third socket is electrically connected to the first end of the fourth resistor R356, and the second end of the fourth resistor R356 is electrically connected to the STATS_NEXT_BOX terminal of the first control module 21. The second end of the fourth transient suppression diode TVS35, the second end of the fifth transient suppression diode TVS34, and the second end of the sixth transient suppression diode TVS32 are grounded. It can be understood that the shared power bank combination cabinet described in this embodiment is used to identify the address of each combination cabinet slave when it is powered on. When there is a combination cabinet slave on the next layer, the fourth end of the second socket J2 is pulled low.

[0035] Preferably, see Figure 6 The first motor drive module 25 includes a solenoid valve drive chip U1, a motor J3, a fifth resistor R200, a sixth resistor R201, a first capacitor C207 and a second capacitor C203; the first end of the solenoid valve drive chip U1 is electrically connected to the first control module 21 through the fifth resistor R200, the second end of the solenoid valve drive chip U1 is grounded, the third end of the solenoid valve drive chip U1 is electrically connected to the first control module 21 through the sixth resistor R201, the fourth end of the solenoid valve drive chip U1 is electrically connected to the first end of the first capacitor C207, the first end of the second capacitor C203 and the input power supply respectively, the second end of the first capacitor C207 and the second end of the second capacitor C203 are grounded, the fifth end of the solenoid valve drive chip U1 is electrically connected to the first end of the motor J3, the sixth end of the solenoid valve drive chip U1 is electrically connected to the first end of the motor J3, and the third and fourth ends of the motor J3 are grounded.

[0036] Example 2

[0037] The present invention further discloses a communication transmission control method, including the shared power bank combination cabinet described in the first embodiment, the communication transmission control method comprising:

[0038] After power-on, control the master unit of the combination cabinet to send a first analog pulse signal to the first slave unit;

[0039] controlling the second identification module to obtain an access signal of a second slave device according to the first analog pulse signal;

[0040] Modify the address bit of the second slave machine, and send the address bit and the SN serial number of the second slave machine to the RX communication terminal of the combination cabinet master through the TX communication terminal of the second slave machine;

[0041] Controlling the combined cabinet to send a second analog pulse signal to the second slave;

[0042] controlling the third identification module to obtain an access signal of a third slave device according to the first analog pulse signal and the second analog pulse signal;

[0043] Modify the address bit of the third slave, and send the address bit and the SN serial number of the third slave to the RX communication terminal of the combination cabinet master through the TX communication terminal of the third slave;

[0044] The total level of the equipment is obtained, and the combination cabinet is controlled to poll the data of multiple slaves according to the address bits and SN serial numbers of the multiple slaves to report the communication data.

[0045] Preferably, see Figure 7 and Figure 8When the shared power bank combination cabinet of the present invention is turned on, the combination cabinet host 1 uses the serial port as a bus parallel polling method to access all slaves in turn, and obtains the status data of all slaves in real time. The RX communication terminal of the communication module 12 in the combination cabinet host is connected in parallel with the TX communication terminal of all slaves, and the TX communication terminal of the communication module 12 in the combination cabinet host is connected in parallel with the RX communication terminal of all slaves. During the non-response period, the TX communication terminals of all slaves are disabled; during the response period, the TX communication terminals of all slaves are enabled, and all slaves are enabled in turn, that is, one and only one slave is enabled at any time. This embodiment determines whether the shared power bank combination cabinet is connected to the next level through I / O port level detection. After power-up, the cabinet master 1 sends a first analog pulse signal to the first identification module 22. Upon receiving the first analog pulse signal, the first slave 2 changes its address bit to 1 and sends the SN sequence number and address bits to the cabinet master's RX communication terminal via the TX communication terminal. Subsequently, the cabinet master 1 sends a second analog pulse signal to the first identification module 22. The first slave 2 queries the second identification module 23 whether to connect to the second slave 3. After receiving two pulse signals, the second slave 3 changes its address bit to 2 and sends the SN sequence number and address bits to the cabinet master's RX communication terminal via the TX communication terminal. The cabinet master 1 sends a third analog pulse signal to the third identification module to inquire whether to connect to the third slave. After receiving three pulse signals, the third slave changes its address bit to 3 and sends the SN sequence number and address bits to the cabinet master's RX communication terminal via the TX communication terminal. This process continues until the last slave in the last layer. After obtaining the total device hierarchy, the cabinet master 1 polls each slave for data using the SN sequence number and address bits of each slave at each level, thereby performing communication data transmission. Therefore, in the present invention, without the support of other hardware bus protocols, the phenomenon of multiple slaves collectively reporting data and causing bus data confusion will not occur, and communication transmission is reliable and orderly.

[0046] In summary, the shared power bank combination cabinet provided by the present invention includes a combination cabinet host 1 and a first slave 2; the combination cabinet host 1 is internally integrated with a host control module 11 and a communication module 12; the first slave 2 includes a first control module 21, a first identification module 22, a first communication module 24 and a first motor drive module 25; the first identification module 22, the first communication module 24 and the first motor drive module 25 are electrically connected to the first control module 21 respectively; the first identification module 22 provides the host control module 11 with an access signal of the first slave 2; the first communication module 24 is used to realize communication data transmission between the first slave 2 and the combination cabinet host 1; the first motor drive module 25 is used to drive multiple shared power banks in the first slave 2 to pop out of the combination cabinet. Therefore, the shared power bank combination cabinet of the present invention can more reasonably and flexibly allocate shared power bank resources. When the cloud platform data analysis shows that a certain area is under-utilized, the number of slave layers can be increased; if the analysis shows that a certain area is under-used, the number of layers can be reduced, thereby intelligently and rationally allocating resources and reducing floor space. In addition, the present invention uses the universal serial data bus of the communication module to sequentially access data with multiple communication modules of each slave, ensuring orderly data transmission, avoiding bus data confusion, orderly and simple communication, and low development cost. Therefore, the shared power bank combination cabinet provided by the present invention has the advantages of strong scalability and reliable communication transmission.

[0047] The above describes in detail a shared power bank combination cabinet and a communication transmission control method provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification is only an implementation method of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the content of the present invention specification and drawings, or directly or indirectly used in other related technical fields, are similarly included in the patent protection scope of the present invention. It should not be understood as a limitation to the present invention.

Claims

1. A shared power bank combination cabinet, applying a communication transmission control method, characterized in that: The shared power bank combination cabinet includes a combination cabinet host and a first slave; the combination cabinet host is internally integrated with a host control module and a communication module; the first slave includes a first control module, a first identification module, a second identification module, a first communication module and a first motor drive module; the first identification module, the second identification module, the first communication module and the first motor drive module are respectively electrically connected to the first control module; the first identification module provides the host control module with an access signal of the first slave; the first communication module is used to realize communication data transmission between the first slave and the combination cabinet host; The first motor driving module is used to drive multiple shared power banks in the first slave machine to pop out of the combined cabinet; The shared power bank combination cabinet also includes a second slave; the second slave includes a second control module, a third identification module, a second communication module and a second motor drive module; the third identification module, the second communication module and the second motor drive module are respectively electrically connected to the second control module; the second communication module is used to realize communication data transmission between the second slave and the combination cabinet host; the second identification module is used to provide the first control module with an access signal of the second slave; The shared power bank combination cabinet also includes a third slave; the third slave includes a third control module, a third communication module and a third motor drive module; the third communication module and the third motor drive module are electrically connected to the third control module respectively; the second slave includes a third identification module; the third communication module is used to realize communication and data transmission between the third slave and the combination cabinet host; The third identification module is used to provide the second control module with an access signal of the third slave; The communication transmission control method comprises: After power-on, control the master unit of the combination cabinet to send a first analog pulse signal to the first slave unit; controlling the second identification module to obtain an access signal of a second slave device according to the first analog pulse signal; Modify the address bit of the second slave machine, and send the address bit and the SN serial number of the second slave machine to the RX communication terminal of the combination cabinet master through the TX communication terminal of the second slave machine; Controlling the combined cabinet to send a second analog pulse signal to the second slave; controlling the third identification module to obtain an access signal of a third slave device according to the first analog pulse signal and the second analog pulse signal; Modify the address bit of the third slave, and send the address bit and the SN serial number of the third slave to the RX communication terminal of the combination cabinet master through the TX communication terminal of the third slave; The total level of the equipment is obtained, and the combination cabinet is controlled to poll the data of multiple slaves according to the address bits and SN serial numbers of the multiple slaves to report the communication data.

2. A shared power bank combination cabinet according to claim 1, characterized in that: The first identification module includes a first seat, a first resistor, a second resistor, a third resistor, a first transient suppression diode, a second transient suppression diode and a third transient suppression diode; the first end of the first seat is electrically connected to the first end of the first resistor and the first end of the first transient suppression diode respectively, the second end of the first resistor is electrically connected to the host control module, the second end of the first seat is electrically connected to the first end of the second resistor and the first end of the second transient suppression diode respectively, the first end of the second resistor is electrically connected to the host control module, the third end of the first seat is electrically connected to the first end of the third resistor and the first end of the third transient suppression diode respectively, the second end of the third resistor is electrically connected to the host control module, the second end of the first transient suppression diode, the second end of the second transient suppression diode and the second end of the third transient suppression diode are grounded.

3. A shared power bank combination cabinet according to claim 1, characterized in that: The second identification module includes a second seat, a fourth resistor, a fourth transient suppression diode, a fifth transient suppression diode and a sixth transient suppression diode; the first end of the second seat is electrically connected to the first end of the fourth transient suppression diode and the first control module, the second end of the second seat is electrically connected to the first end of the fifth transient suppression diode and the first control module, the third end of the second seat is electrically connected to the first end of the sixth transient suppression diode and the first control module, the fourth end of the second seat is electrically connected to the first end of the fourth resistor, the second end of the fourth resistor is electrically connected to the first control module, and the second end of the fourth transient suppression diode, the second end of the fifth transient suppression diode and the second end of the sixth transient suppression diode are grounded.

4. A shared power bank combination cabinet according to claim 1, characterized in that: The first motor drive module includes a solenoid valve drive chip, a motor, a fifth resistor, a sixth resistor, a first capacitor and a second capacitor; the first end of the solenoid valve drive chip is electrically connected to the first control module through the fifth resistor, the second end of the solenoid valve drive chip is grounded, the third end of the solenoid valve drive chip is electrically connected to the first control module through the sixth resistor, the fourth end of the solenoid valve drive chip is electrically connected to the first end of the first capacitor, the first end of the second capacitor and the input power supply respectively, the second end of the first capacitor and the second end of the second capacitor are grounded, the fifth end of the solenoid valve drive chip is electrically connected to the first end of the motor, the sixth end of the solenoid valve drive chip is electrically connected to the first end of the motor, and the third and fourth ends of the motor are grounded.

Images