A charging management system for a portable seismograph cabinet / wall-mounted chassis

Abstract

The present invention relates to a charging management system for a carrier-mounted seismograph cabinet / wall-mounted chassis, comprising a main control board and an external protection box; the main control board has a main control CPU, the main control CPU is connected to a first power module through an on / off self-locking control circuit, the main control CPU is connected to a second power module through a charging control circuit, and the second power module is connected to a battery charging management circuit and then respectively connected to an interface module and a charging status buffer circuit; the input interfaces of the interface module are respectively connected to a network switch, the main control CPU and the battery charging management circuit, and the output interface is a communication charging composite interface; after the network switch is connected to a +12V power supply / communication composite conversion circuit, it is connected to the SAP master station and the pilot sensor in the external protection box through a composite cable. It can automatically disconnect the total power supply of the cabinet / wall-mounted chassis after the charging of the SAP acquisition terminal is completed, and make the power-on / off control device of the cabinet / wall-mounted chassis automatically return to the original state.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel seismographs, and particularly to a charging management system for a mounted seismograph cabinet / wall-mounted chassis. Background Technique

[0002] The statements in this part only provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] The tunnel advanced prediction system is a system used for geological disaster risk warning during the tunneling work of tunnels and underground projects. The seismograph unit therein usually has an industrial control computer, an SAP master station, a pilot sensor, and several SAP acquisition terminals. The industrial control computer is integrated in a mounted cabinet / wall-mounted chassis, the SAP master station and the pilot are integrated in an external protection box, and the external protection box is connected to the mounted cabinet / wall-mounted chassis through an Ethernet cable. The acquisition terminals form a wireless sensor network with the SAP master station through a wireless channel. Obviously, the lithium batteries built into the SAP acquisition terminals must be charged frequently.

[0004] Generally, after the on-site construction is completed, all the SAP acquisition terminals are gathered into the SAP acquisition terminal placement unit of the mounted cabinet / wall-mounted chassis. The industrial control computer reads and downloads the massive data stored in the acquisition terminals through a communication interface, and then connects a charger to charge the SAP acquisition terminals after the data processing is completed. It takes 6 - 10 hours (related to the remaining power of the lithium battery) to fully charge the lithium batteries built into the SAP acquisition terminals here. Construction workers will not wait until the charging is completed before leaving, and the entire cabinet / wall-mounted chassis remains powered on during this period. If there is no construction worker to control the main power supply of the cabinet / wall-mounted chassis to turn it off for a period of time, there will be potential safety hazards. Summary of the Invention

[0005] In order to solve the technical problems existing in the above background technique, the present invention provides a charging management system for a mounted seismograph cabinet / wall-mounted chassis, which can automatically disconnect the main power supply of the cabinet / wall-mounted chassis after the SAP acquisition terminals are fully charged, and make the power-on / off control device of the cabinet / wall-mounted chassis automatically return to the original state.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The first aspect of the present invention provides a charging management system for a mounted seismograph cabinet / wall-mounted chassis, including a main control board and an external protection box; wherein the main control board includes:

[0008] The main control CPU is connected to the first power module through the on / off self-locking control circuit. The main control CPU is connected to the second power module through the charging control circuit. The second power module is connected to the battery charging management circuit and then respectively connected to the interface module and the charging status buffer circuit;

[0009] The interface module, the input interfaces are respectively connected to the network switch, the main control CPU and the battery charging management circuit, and the output interface is a communication charging composite interface;

[0010] After the network switch is connected to the +12V power supply / communication composite conversion circuit, it is connected to the SAP master station and the pilot sensor in the external protection box through a composite cable; one of the communication interfaces of the network switch is connected to the industrial computer.

[0011] The main control CPU is connected to the charging status buffer circuit through the status input interface; connected to the charging status indicator light of the interface module through the status output interface; connected to the normally open dry contact and the normally closed dry contact through the auxiliary power-off control circuit; connected to the start button through the button key circuit; connected to the timing setting circuit through the time input interface.

[0012] The AC220V input power supply is respectively connected to the first power module and the second power module, converting the external input power supply into +12V power supply and +5V power supply.

[0013] The +12V power supply output by the first power module is respectively connected to the +12V power supply output relay and the +12V power supply / communication composite conversion circuit; the main control CPU is connected to the +12V output relay through the +12V output control circuit; the first power module is connected to the main control CPU through the +3.3V power supply interface; the on / off button is respectively connected to the on / off relay control circuit in the first power module and the on / off status input interface in the main control CPU.

[0014] The charging control circuit is connected to the charging control relay and then connected to the second power module, and the charging control relay is connected to the AC220V input power supply.

[0015] The charging status indicator light interface of the interface module is connected to the status output interface of the main control CPU; the charging interface is connected to the lithium battery charging management circuit; the switching interface is connected to the network switch.

[0016] The on / off power self-locking control circuit includes three groups of relays RL1, RL2, and RL3 arranged in parallel; both ends of the coil of relay RL1 are connected to the main control CPU, and the normally open contacts are respectively connected to the P terminal of the AC 220V input and the second power module; one end of the coil of relay RL2 is respectively connected to a set of contacts of the self-resetting double-knife button K1 and one end of the normally closed contact of relay RL3, and the other end of the coil of relay RL2 is respectively connected to the first power module and the second power module; one end of the normally open contact of relay RL2 is connected to the P terminal of the AC 220V input, and the other end is connected to the first power module; both ends of the coil of relay RL3 are connected to the main control CPU, one end of the normally closed contact of relay RL3 is connected to a set of contacts of the self-resetting double-knife button K1, and the other end is connected to the first power module; two sets of contacts of the self-resetting double-knife button K1 are respectively connected to the main control CPU.

[0017] Compared with the prior art, the above one or more technical solutions have the following beneficial effects:

[0018] 1. The AC 220V input power is converted into a charging voltage and a charging current by the second power module and then charged through the battery charging management circuit; during the charging process, the main control CPU detects the charging status in real time through the charging status buffer circuit. When the charging circuit is detected to be at a low level, the corresponding port of the main control CPU outputs a low level to light up the charging status indicator of the interface module; when the main control CPU detects the high-impedance state indicated by the charging circuit, the main control CPU turns off the charging status indicator and outputs a low level from the corresponding port to light up the charging end status indicator; at the same time, when it is detected that the battery charging management circuit has completed charging, the main control CPU makes the charging control circuit convert to a reset state, and the second power module is powered off to stop working and the charging ends.

[0019] 2. The system can provide a composite interface for the seismograph for multi-channel data communication / charging (4.2V 1500mA), and the working time of the composite interface can be automatically controlled by setting the charging duration; at the same time, it provides two working power supplies (+12V 6W) and a data communication composite interface for the SAP master station and the pilot sensor in the remote external protection box.

[0020] 3. Provide an auxiliary power-off reset function for the total AC power supply system of the cabinet / wall-mounted chassis synchronized with the charging duration control. This function cooperates with a third-party electrical control device (or circuit) to achieve automatic power-off of the total power supply system. Different charging durations such as 6 hours, 8 hours, 10 hours, or constant on (24 hours) can be set, and the power is automatically turned off and the machine is shut down at the end of the timed charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specification drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0022] Figure 1 is a schematic diagram of the principle of the charging management system provided by one or more of the present inventions;

[0023] Figure 2 is a schematic diagram of the principle of the power-on / off circuit in the charging management system provided by one or more of the present inventions;

[0024] Figure 3 is a schematic diagram of the principle of the remote external protection box circuit in the charging management system provided by one or more of the present inventions. Detailed implementation manners

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanations of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0027] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] As described in the background art, after the operation of the seismograph is completed, it will charge all the SAP (SAP refers to the tunnel seismic prediction instrument) acquisition terminals. The entire cabinet / wall-mounted chassis of the seismograph remains powered on during this period and does not have the function of automatic power-off, which is prone to safety hazards in the absence of personnel management.

[0029] Therefore, the following embodiments provide a charging management system for a mounted seismograph cabinet / wall-mounted chassis, which can realize the function of automatically disconnecting the total power supply of the cabinet / wall-mounted chassis after the charging of the SAP acquisition terminal is completed, and make the power-on / off control device of the cabinet / wall-mounted chassis automatically return to the original state.

[0030] The charging management system given in the following embodiments can provide a composite interface for 12-channel data communication / charging (4.2V 1500mA) for a seismograph, and can automatically control the working time of the composite interface by setting the charging duration; meanwhile, the system provides two working power supplies (+12V 6W) and a data communication composite interface for the SAP master station and the pilot sensor in the remote external protection box. It also provides an auxiliary power-off reset function for the total AC power supply system of the cabinet / wall-mounted chassis that is synchronized with the charging duration control. This function cooperates with a third-party electrical control device (or circuit) to achieve automatic power-off of the total power supply system. The system can set different charging durations such as 6 hours, 8 hours, 10 hours, or continuous on (24 hours), and automatically power off and shut down at the end of the timed charging. After actual application, the system has two self-resetting operation switch buttons, namely the power-on / off button and the charging start / stop button of the system. Using the two buttons, the system's own power-on / off, charging start / stop, and the above-mentioned auxiliary power-off reset function can be controlled.

[0031] Embodiment 1:

[0032] As Figures 1-3 shown, a charging management system for a carrier seismograph cabinet / wall-mounted chassis includes: a main control board and an external protection box; among them, the main control board includes:

[0033] A main control CPU is respectively connected to a power module AC / DC-1 through an on / off self-locking control circuit and a +3.3V power interface; connected to an on / off button through an on / off state input interface; connected to a +12V output relay through a +12V output control circuit, and the +12V output relay is connected to the SAP master station and the pilot sensor in the external protection box through a +12V power / RJ45 composite conversion circuit; connected to an interface module through a 24-channel state output interface; connected to a normally open contact and a normally closed contact through an auxiliary power-off control circuit; connected to a charging state buffer circuit through a 12-channel state input interface; connected to a power module AC / DC-2 through a charging control circuit via a charging control relay, and the power module AC / DC-2 is respectively connected to the charging state buffer circuit and the interface module through a lithium battery charging management circuit; connected to a start button through a button key circuit; connected to a timing setting circuit through a time input interface;

[0034] An interface module, the charging status indicator interface is connected to the 24-channel state output interface of the main control CPU; 12 charging interfaces are connected to the lithium battery charging management circuit; 12 switching interfaces are connected to 12 of the RJ45 interfaces of a 16-port network switch; the output of the interface module is a 12-channel communication charging composite interface; 2 of the RJ45 interfaces of the 16-port network switch are connected to the +12V power / RJ45 composite conversion circuit.

[0035] Specifically:

[0036] The main control board is equipped with an on / off self-locking control circuit, a power module AC / DC-1, a +12V output control circuit, a +12V power supply / RJ45 composite conversion circuit, a main control CPU, a charging control circuit, a power module AC / DC-2, a lithium battery charging management circuit, a charging status buffer circuit, an auxiliary power-off control circuit, a network switch (HUB), an Ethernet / charging composite conversion circuit, a button key circuit, a timing setting circuit, and a remote Ethernet / power supply composite conversion circuit. These components complete the functions involved in this embodiment under the control of the main control CPU. These functions include charging management functions, data communication functions, auxiliary power-off functions for AC power supply systems, remote power supply functions, timed charging functions, button operation functions, etc.

[0037] The charging management function includes providing a charging function and a charging status detection function for 12 lithium batteries, and can automatically stop charging and shut down the device according to the charging status and the timing function.

[0038] The full charge voltage of each lithium battery is 4.2V and the maximum charging current is 1500mA. The total charging current of 12 lithium batteries is 18A. To ensure the stable operation of the circuit, this embodiment provides a total capacity of up to 20A for the charging circuit, leaving a margin of about 11%.

[0039] Each lithium battery charging circuit has a charging status output interface. The interface is an open collector output, providing a low level state during the charging process. When the charging current is less than 10% of the maximum charging current (<150mA), the charging ends, and the charging status output interface changes from a low level state to a high impedance state.

[0040] The data communication function is completed by the 16-port network switch integrated in this system. Among them, 12 RJ45 Ethernet data communication interfaces are provided for the seismograph, 1 RJ45 Ethernet data communication interface is provided for the main station of the seismograph, 1 RJ45 Ethernet data communication interface is provided for the pilot sensor, 1 RJ45 Ethernet data communication interface is provided for the industrial computer, and 1 RJ45 Ethernet data communication interface is reserved.

[0041] In addition to the defined two pairs of Ethernet receive / transmit twisted signal lines, one pair of twisted signal lines in the other two pairs of signal lines provides a charging function for the lithium battery. Such a structure constitutes a comprehensive interface with communication and charging functions. This comprehensive interface can start / stop the charging output at any time while maintaining the communication state.

[0042] The main control CPU detects the working status of the 12 charging circuits in real time. When it detects that all 12 charging circuits have completed charging, the main control CPU makes the charging control enabling circuit convert to an invalid state, and the charging power supply AC / DC-2 cuts off power and stops working, thus ending the operation of the 12 lithium battery charging circuits. When stopping the operation of the lithium battery charging circuits as described above, the main control CPU outputs a control signal to flip the shutdown control circuit to the shutdown state, making the on / off self-locking circuit ineffective, and the system cuts off power and shuts down.

[0043] At the same time, the main control CPU can output dry contacts (normally closed contacts / normally open contacts) through the auxiliary power-off control interface, cooperate with a third-party electrical control device (or circuit) to achieve the automatic power-off function of the total power supply system, and make the third-party electrical control device (or circuit) return from the working state to the initial state.

[0044] The third-party electrical control device (or circuit) is not a part of the charging management system proposed in this embodiment, and the specific type of the third-party electrical control device (or circuit) is not limited. Taking a line control circuit breaker as an example:

[0045] The line control circuit breaker is set in a passive wiring mode. At this time, the line control circuit breaker provides a two-wire control interface, and its internal output drives the power supply. This driving power supply forms a driving circuit through the dry contacts of the auxiliary power-off control interface. When the dry contacts of the auxiliary power-off control interface are in the normally open state, the driving circuit formed by the internal output driving power supply of the aforementioned line control circuit breaker and the dry contacts is in an open circuit state, and the line control circuit breaker does not operate and maintains the current working state. When the dry contacts of the auxiliary power-off control interface act and convert to the closed state, the driving circuit formed by the internal output driving power supply of the aforementioned line control circuit breaker and the dry contacts forms a loop, and the line control circuit breaker automatically trips, causing the total power supply system to cut off power. At this time, the line control circuit breaker returns to the standby state.

[0046] The remote power supply function is to provide a working power supply and data communication for the remote external protection box. In this system, the main control board is connected to the remote external protection box through an Ethernet cable. In addition to the two pairs of Ethernet receive / transmit twisted signal lines, power is provided through one pair of the other two pairs of signal lines. Such a structure constitutes a comprehensive interface with data communication and charging functions. The power supply capacity of this interface is +12V DC voltage and 6W power.

[0047] The timed charging function means that when the charging function is started, the main control CPU judges the setting status of the charging timing duration, and starts and maintains the lithium battery charging function with this charging duration parameter; the charging timing duration can be set to 6 hours, 8 hours, 10 hours or always on (24 hours); after the charging function is started, the main control CPU of the system starts timing according to the set charging duration. After the timing ends, regardless of the working state of the 12-channel charging circuit, the main control CPU makes the charging control circuit convert to an invalid state, and the charging power supply AC / DC-2 is powered off and stops working, thus ending the work of the 12-channel lithium battery charging circuit; after the above-mentioned work of the lithium battery charging circuit is stopped, the main control CPU outputs a control signal to turn the shutdown control circuit to the shutdown state, making the on / off self-locking circuit ineffective, and the system is powered off and shuts down.

[0048] At the same time, the main control CPU can output dry contacts (normally closed contacts / normally open contacts) through the auxiliary power-off control interface, cooperate with a third-party electrical control device (or circuit) to realize the automatic power-off function of the total power supply system, and make the third-party electrical control device (or circuit) return to the initial state from the working state.

[0049] The two self-resetting buttons of the system provide button operation functions for the system; one self-resetting button is a double-knife button, and its functions are power on / off and providing button state feedback to the main control CPU; the other is a single-knife button, and its function is to start / stop charging;

[0050] When the power on / off button is pressed for the first time, a set of power-on contacts in the button are locked in the power-on state with the self-locking circuit composed of the main power-on relay and the shutdown relay, and keep the system of the present invention powered on after the button is released; when the power on / off button is pressed again, the main control CPU detects the button press state through the feedback of the other set of contacts of the power on / off button, and the main control CPU outputs a control signal to turn the shutdown control circuit to the shutdown state, making the on / off self-locking circuit ineffective, and the main power on / off control relay is released after the power on / off button is released, so that the system is powered off and shuts down; the above power on / off process can be repeated;

[0051] When the start / stop charging button is pressed for the first time, after the main control CPU detects it, it makes the charging control circuit convert to an effective state, and the charging power supply AC / DC-2 is powered on and starts to work to output +5V / 20A current, so that the 12-channel lithium battery charging circuit starts to work; when the start / stop charging button is pressed again, the main control CPU makes the charging control circuit convert to an invalid state, and the charging power supply AC / DC-2 is powered off and stops working, thus ending the work of the 12-channel lithium battery charging circuit; the above start / stop charging process can be repeated.

[0052] The system has three conditions for ending the charging state: start / stop charging button operation, 12-channel charging state detection, and charging timing time overflow.

[0053] —— Start / Stop Charging Button Operation

[0054] When the start / stop charging button is pressed for the first time, after the main control CPU detects it, the charging control circuit is converted to an active state, the charging power supply AC / DC-2 is powered on and starts to work to output a +5V / 20A current, enabling the 12-channel lithium battery charging circuit to start working; when the start / stop charging button is pressed again initially, the main control CPU converts the charging control circuit to a reset state, and the charging power supply AC / DC-2 is powered off to end the 12-channel lithium battery charging; the above start / stop charging process can be repeated.

[0055] —— 12-channel Charging Status Detection

[0056] During the charging process, the main control CPU detects the charging status in real time through the charging status buffer circuit. When the main control CPU detects a low level in the charging circuit, the corresponding port of the main control CPU outputs a low level to light up the charging status indicator; when the main control CPU detects a high-impedance state indicated by the charging circuit, the main control CPU turns off the charging status indicator and outputs a low level from the corresponding port to light up the charging end status indicator. At the same time, when the main control CPU detects that all 12-channel charging circuits have completed charging, the main control CPU converts the charging control circuit to a reset state, and the charging power supply AC / DC-2 is powered off and stops working to end the 12-channel lithium battery charging.

[0057] —— Charging Timing Overflow

[0058] After pressing the start / stop charging button to start charging and enabling the charging circuit, the main control CPU reads the timing setting status. The charging timing duration can be set to 6 hours, 8 hours, 10 hours or continuous on (24 hours). During the charging process, the main control CPU continuously judges the 12-channel charging status. If it does not detect that all 12-channel charging circuits have completed charging until the charging duration overflows, the main control CPU converts the charging control circuit to a reset state, and the charging power supply AC / DC-2 is powered off and stops working to end the 12-channel lithium battery charging.

[0059] Under the two conditions of 12-channel charging status detection and charging timing overflow among the above three conditions for ending the charging status, when stopping the work of the lithium battery charging circuit, the main control CPU outputs a control signal to flip the control port of the on / off self-locking circuit to the unlocked state, that is, the on / off self-locking relay is energized and the normally closed contact is converted to the normally open contact, making the self-locking state of the on / off self-locking circuit invalid, and the system is disconnected from the AC power supply and shuts down.

[0060] Meanwhile, the main control CPU can output dry contacts (normally closed dry contacts / normally open dry contacts) through the auxiliary power-off control interface, cooperate with a third-party electrical control device (or circuit) to automatically cut off the total power supply system of the cabinet / wall-mounted chassis, and return the third-party electrical control device (or circuit) to its initial state from the working state.

[0061] During the start / stop charging button operation, when the button stops charging, the main control CPU will not operate the auxiliary power-off control circuit, so it does not affect the normal operation of other devices in the cabinet / wall-mounted chassis.

[0062] The above-mentioned third-party electrical control device (or circuit) is not part of this embodiment.

[0063] As Figure 2 shown in the on / off self-locking circuit, it includes three groups of relays RL1, RL2, and RL3 arranged in parallel;

[0064] Both ends of the coil of relay RL1 are connected to the main control CPU, and the normally open contacts are respectively connected to the P terminal of the AC 220V input and the power module AC / DC-2;

[0065] One end of the coil of relay RL2 is respectively connected to a set of contacts of the self-resetting double-pole button K1 and one end of the normally closed contact of relay RL3. The other end of the coil of relay RL2 is respectively connected to the power module AC / DC-1 and the power module AC / DC-2; One end of the normally open contact of relay RL2 is connected to the P terminal of the AC 220V input, and the other end is connected to the power module AC / DC-1;

[0066] Both ends of the coil of relay RL3 are connected to the main control CPU. One end of the normally closed contact of relay RL3 is connected to a set of contacts of the self-resetting double-pole button K1, and the other end is connected to the power module AC / DC-1;

[0067] Two sets of contacts of the self-resetting double-pole button K1 are respectively connected to the main control CPU.

[0068] As Figure 2 shown in the on / off self-locking principle, relay RL2 is the main relay for system startup. The AC power supply AC220V L terminal, the coil of relay RL2, a set of (normally open) contacts of the self-resetting on / off double-pole button K1, and the AC power supply AC220V P terminal form a startup control circuit.

[0069] ——Startup

[0070] When K1 is pressed, a set of contacts closes, the coil of RL2 is energized and its normally open contacts close and conduct, AC / DC1 is energized to work and outputs +12V, and the digital part of the circuit starts to work; at the same time, the output end of the normally open contacts of RL2 is connected to the coil of relay RL2 through the circuit composed of the normally closed contacts of RL3 to enter the self-locking state. This circuit is in parallel with the circuit of a set of contacts of K1. When K1 is released, a set of contacts of K1 enter the open state, and the suction state (self-locking) of relay RL2 is maintained. At the same time, during this power-on reset process, the CPU detects that two sets of contacts of the self-resetting double-knife button K1 are in the closed state, which is recorded as a boot operation. When K1 is released, the CPU program enters the standby state.

[0071] ——Shutdown

[0072] Relay RL3 is controlled by the CPU and is a relay for unlocking the power lock state.

[0073] When K1 is pressed for the second time, the CPU detects the closed state of two sets of contacts, outputs a drive signal from the shutdown control terminal, relay RL3 is energized, and its normally closed contacts are converted to the open state, and the on / off self-locking circuit is open. Since a set of contacts of K1 are in the closed state at this time, it remains in parallel with the circuit composed of the output end of the normally open contacts of RL2 through the normally closed contacts of RL3, and the on-relay RL2 still maintains its working state unchanged. After K1 is released, the on / off self-locking circuit is open, causing the coil of the on-relay RL2 to lose power and release, and its normally open contacts are converted from the closed state to the open state, AC / DC1 loses power and stops working, and the digital power supply loses power and the whole machine shuts down.

[0074] Figure 2 The relay RL1 in [] is a charging enable relay, and its function is described in the relevant principle description.

[0075] The remote power supply function is to provide the working power supply and data communication for the remote external protection box; in this system, the main control board is connected to the remote external protection box through an Ethernet cable. In addition to the two pairs of Ethernet receive / transmit twisted signal lines, power is provided through one pair of twisted signal lines in the other two pairs of signal lines. Such a structure constitutes a comprehensive interface with communication and charging functions, and the power supply capacity of this interface is +12V 6W.

[0076] After the main control CPU is powered on and reset, an enable signal is output from the +12V output enable control terminal, the +12V output relay is energized, and the +12V power supply is delivered to the +12V / RJ45 composite conversion circuit through the normally open contacts of the relay, and is combined into two remote Ethernet / power supply composite interfaces: the SAP master station composite interface and the pilot composite interface. The cabinet / wall-mounted chassis is connected to the external protection box through these two interfaces.

[0077] External protection box. Inside the box, except for the SAP master station and the pilot device, an Ethernet / power supply composite interface separation circuit is provided to separate the Ethernet / power supply composite interface into an Ethernet interface and a +5V power supply. The principle of the conversion circuit is as Figure 3 shown.

[0078] The SAP master station composite cable and the pilot composite cable are respectively connected to the Ethernet / power supply composite interface separation circuit and converted into two Ethernet data communication interfaces respectively connected to the SAP master station and the pilot. At the same time, the two +12V power supplies separated by the separation circuit are combined through diode D0 and diode D1 respectively, and after combination, a +5V power supply is output by the DC / DC converter to supply power to the SAP master station and the pilot.

[0079] As Figure 3 shown, to expand the power supply capacity, a spare power supply input interface is reserved. The power supply input through this interface is combined with the outputs of the aforementioned diodes D0 and D1 through diode D2 to supply power to the subsequent circuit.

[0080] The above system enables the SAP acquisition terminal of the seismograph to automatically disconnect the total power supply of the cabinet / wall-mounted chassis after charging is completed, and enables the power-on / power-off control device of the cabinet / wall-mounted chassis to automatically return to the original state.

[0081] The system can provide a seismograph with a 12-way data communication / charging (4.2V 1500mA) composite interface, and the working time of the composite interface can be automatically controlled by setting the charging duration; at the same time, it provides two working power supplies (+12V 6W) and a data communication composite interface for the SAP master station and the pilot sensor in the remote external protection box.

[0082] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A charging management system for a portable seismograph cabinet / wall-mounted chassis, characterized in that: Including: The main control board and the external protection box; Among them, the main control board includes: The main control CPU is connected to the first power module through the on / off self-locking control circuit, and the main control CPU is connected to the second power module through the charging control circuit. After the second power module is connected to the battery charging management circuit, it is respectively connected to the interface module and the charging status buffer circuit; the main control CPU is connected to the charging status buffer circuit through the status input interface, is connected to the charging status indicator light of the interface module through the status output interface, is connected to the normally open dry contact and the normally closed dry contact through the auxiliary power-off control circuit, cooperates with the third-party electrical control device to realize the automatic power-off function of the total power supply system, and makes the third-party electrical control device return to the initial state from the working state, is connected to the start button through the button key circuit, and is connected to the timing setting circuit through the time input interface; The +12V power supply output by the first power module is respectively connected to the +12V power supply output relay and the +12V power supply / communication composite conversion circuit; the main control CPU is connected to the +12V output relay through the +12V output control circuit; the first power module is connected to the main control CPU through the +3.3V power supply interface; the on / off button is respectively connected to the on / off relay control circuit in the first power module and the on / off state input interface in the main control CPU; The charging control circuit is connected to the second power module after being connected to the charging control relay, and the charging control relay is connected to the AC220V input power supply; The on / off self-locking control circuit includes three groups of relays RL1, RL2, and RL3 arranged in parallel; The interface module, the input interface is respectively connected to the network switch, the main control CPU, and the battery charging management circuit, and the output interface is a communication charging composite interface; After the network switch is connected to the +12V power supply / communication composite conversion circuit, it is connected to the SAP master station and the pilot sensor in the external protection box through a composite cable; one of the communication interfaces of the network switch is connected to the industrial computer.

2. The charging management system for a carrier seismograph cabinet / wall-mounted chassis according to claim 1, characterized in that: The AC220V input power supply is respectively connected to the first power module and the second power module, and converts the external input power supply into +12V power supply and +5V power supply.

3. The charging management system of a portable seismograph cabinet / wall-mounted chassis according to claim 1, characterized in that: The charging status indicator light interface of the interface module is connected to the status output interface of the main control CPU; the charging interface is connected to the lithium battery charging management circuit; the switching interface is connected to the network switch.

4. The charging management system for the carried seismograph cabinet / wall-mounted chassis according to claim 1, wherein: Both ends of the coil of the relay RL1 are connected to the main control CPU, and the normally open contacts are respectively connected to the P end of the AC220V input and the second power module; one end of the coil of the relay RL2 is respectively connected to a group of contacts of the self-resetting double-knife button K1 and one end of the normally closed contact of the relay RL3, and the other end of the coil of the relay RL2 is respectively connected to the first power module and the second power module.

5. The charging management system for the carrier seismograph cabinet / wall-mounted chassis according to claim 1, characterized in that: One end of the normally open contact of the relay RL2 is connected to the P end of the AC220V input, and the other end is connected to the first power module; both ends of the coil of the relay RL3 are connected to the main control CPU.

6. The charging management system for the carrier seismograph cabinet / wall-mounted chassis according to claim 1, characterized in that: One end of the normally closed contact of the relay RL3 is connected to a group of contacts of the self-resetting double-knife button K1, and the other end is connected to the first power module; the two groups of contacts of the self-resetting double-knife button K1 are respectively connected to the main control CPU.

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