Remote power supply self-diagnosis system and method for underground emergency broadcast

Abstract

The invention provides a remote power supply self-diagnosis system and method for underground emergency broadcast. The system comprises a control detection module, an execution module and a remote power supply self-diagnosis module, wherein the control detection module is configured to send a control instruction to the execution module; the execution module is configured to cut off the connection between the emergency broadcast host and the alternating current power supply if the control instruction is a discharge instruction; when the backup battery enters the discharge mode, the backup battery supplies power to the emergency broadcast host; if the control instruction is a charging instruction, the emergency broadcast host is connected to an alternating current power supply; when the discharge instruction is sent to the execution module, if the power supply state of the emergency broadcast host is not battery power supply, an alarm is given; and when the charging instruction is sent to the execution module, if the power supply state of the emergency broadcast host is not alternating current power supply, an alarm is given, so that the problem that a backup battery in the current underground emergency broadcast host is maintained by manually descending to each broadcast point location for field operation is solved. The maintenance work efficiency of the backup battery is low; and a safety management and control blind area exists.

Description

Technical Field

[0001] This application relates to the field of coal mine equipment technology, and in particular to a remote power supply self-diagnosis system and method for underground emergency broadcasting. Background Technology

[0002] In the field of mine safety, underground emergency broadcasting is the lifeline of mine safety. The mining environment is complex and dangerous, and various emergencies can occur at any time, such as gas explosions, water inrushes, and collapses. In the event of a power outage, the mine will be plunged into darkness and chaos, severely threatening the lives of personnel. At this time, the emergency broadcasting system must be activated quickly and operate continuously and stably to promptly convey evacuation instructions to underground personnel and guide them to safety. Its reliability directly affects the degree of casualties and the effectiveness of rescue operations.

[0003] To meet these needs, each emergency broadcast host is currently equipped with a backup battery. In the event of a power outage underground, the backup battery can immediately power the emergency broadcast system, ensuring its continuous operation. However, due to the inherent characteristics of batteries, they exhibit self-discharge. If left in a float charge state for an extended period without regular deep charge / discharge cycles, the activity of the internal chemical substances will gradually decrease, leading to a rapid decline in battery capacity and performance. To avoid this, regular battery maintenance is necessary, using deep charge / discharge operations to activate the internal chemical substances, restore their performance, and ensure the required 2-hour power supply time in emergencies. Currently, the industry standard for battery maintenance involves regular manual visits to each broadcast point underground to perform on-site operations, including checking battery status and performing deep charge / discharge cycles.

[0004] However, manual, periodic maintenance underground is extremely inefficient. With numerous and widely distributed broadcast points within the mine, workers must expend considerable time and effort operating at each point, disrupting normal production and increasing labor costs. Furthermore, manual operation struggles to guarantee consistent and comprehensive maintenance quality. Differences in worker skill levels can lead to inadequate maintenance of some batteries. In the vast and complex mine environment, ensuring timely maintenance at every broadcast point creates blind spots in safety management. In the event of an emergency, unmaintained batteries cannot provide sufficient power, severely threatening the lives of underground personnel. Summary of the Invention

[0005] This application provides a remote power self-diagnosis system and method for underground emergency broadcasting, in order to solve the technical problem that the current method of maintaining the backup battery in the underground emergency broadcasting host requires manual periodic descent into the well to each broadcasting point for on-site operation, resulting in low efficiency of backup battery maintenance and blind spots in safety control.

[0006] The first aspect of this application provides a remote power self-diagnosis system for underground emergency broadcasting, applied to an underground emergency broadcasting host, wherein the underground emergency broadcasting host is equipped with a backup battery; comprising:

[0007] Control and detection module, execution module, power switching module;

[0008] The control detection module is configured as follows:

[0009] Send control commands to the execution module; the control commands include: discharge commands and charge commands;

[0010] The execution module is configured as follows:

[0011] Upon receiving the control command, if the control command is a discharge command, the power switching module is controlled to disconnect the connection between the underground emergency broadcast host and the AC power supply, so that the backup battery enters the discharge mode; when the backup battery enters the discharge mode, the backup battery supplies power to the underground emergency broadcast host.

[0012] Upon receiving the control command, if the control command is a charging command, the power switching module is controlled to connect the underground emergency broadcast host to an AC power source, and the backup battery enters charging mode.

[0013] The control detection module is also configured to:

[0014] The system receives a status signal sent by the underground emergency broadcast host and determines the power supply status of the underground emergency broadcast host based on the status signal; the power supply status includes: AC power supply and battery power supply.

[0015] When a discharge command is sent to the execution module, if the power supply status of the downhole emergency broadcast host is not battery powered, an alarm will be issued.

[0016] When a charging command is sent to the execution module, if the power supply status of the underground emergency broadcast host is not AC power, an alarm will be issued.

[0017] In some embodiments, the control detection module includes:

[0018] Emergency broadcast host computer and system substations;

[0019] The emergency broadcast host computer is configured as follows:

[0020] Send control commands to the system substation;

[0021] In addition, it receives status signals sent by the underground emergency broadcast host and determines the power supply status of the underground emergency broadcast host based on the status signals;

[0022] When a discharge command is sent to the execution module, if the power supply status of the downhole emergency broadcast host is not battery powered, an alarm will be issued.

[0023] When a charging command is sent to the execution module, if the power supply status of the underground emergency broadcast host is not AC power, an alarm will be issued.

[0024] The system substation is configured as follows:

[0025] Based on the control commands, determine the model information of the underground emergency broadcast host;

[0026] The control command and the model information of the downhole emergency broadcast host are sent to the execution module.

[0027] In some embodiments, the emergency broadcast host computer is further configured to:

[0028] When a discharge command is sent to the execution module, if the power supply status of the downhole emergency broadcast host is not battery powered, a warning message is sent to the designated device; the warning message includes: the model information and location information of the downhole emergency broadcast host; the designated device is an electronic device capable of receiving electronic information;

[0029] When a charging command is sent to the execution module, if the power supply status of the underground emergency broadcast host is not AC power, a warning message is sent to the designated device.

[0030] In some embodiments, the power switching module includes:

[0031] A relay control coil, wherein the relay control coil is provided with a normally closed contact; the normally closed contact is connected to an AC power supply and an underground emergency broadcast host.

[0032] The relay control coil is configured as follows:

[0033] If the received control command is a discharge command, then the normally closed contact of the relay is opened.

[0034] If the received control command is a charging command, then the normally closed contact of the relay is closed.

[0035] In some embodiments, the execution module includes:

[0036] A remote control switch, wherein the remote control switch is configured to:

[0037] Receive the control command and the model information of the downhole emergency broadcast host, and determine the target relay control coil connected to the downhole emergency broadcast host according to the model information of the downhole emergency broadcast host;

[0038] If the control command is a discharge command, the target relay control coil disconnects the normally closed contact of the relay, causing the backup battery to enter the discharge mode.

[0039] If the control command is a charging command, the normally closed contact of the target relay control coil is closed, so that the underground emergency broadcast host is connected to the AC power supply, and the backup battery enters the charging mode.

[0040] In some embodiments, the control detection module is further configured to:

[0041] Obtain the contact state of the normally closed contact of the relay; the contact state includes: closed and open.

[0042] If the received control command is a discharge command and the contact state is closed, then a relay fault information is sent to the designated device; the relay fault information includes: the model information and location information of the relay control coil;

[0043] If the received control command is a charging command and the contact state is open, then a relay fault message is sent to the designated device.

[0044] In some embodiments, the control detection module is further configured to:

[0045] When the power supply status of the underground emergency broadcast host is battery powered, the discharge voltage and discharge current of the backup battery are obtained;

[0046] Based on the discharge voltage and discharge current, the energy capacity and internal resistance of the backup battery are determined.

[0047] In some embodiments, the control detection module is further configured to:

[0048] When the power supply status of the underground emergency broadcast host is AC power, the charging voltage and charging current of the backup battery are obtained;

[0049] Determine whether the charging voltage and charging current are within the preset voltage range and preset current range, respectively. If not, send charging circuit damage information to the designated device. The charging circuit damage information includes: a preset charging circuit damage message and the model information of the underground emergency broadcast host.

[0050] The second aspect of this application provides a remote power supply self-diagnosis method for downhole emergency broadcasting, applied to a remote power supply self-diagnosis system for downhole emergency broadcasting as described in any one of the first aspects above, comprising:

[0051] Send control commands to the execution module; the control commands include: discharge commands and charge commands;

[0052] Upon receiving the control command, if the control command is a discharge command, the control power switching module disconnects the connection between the underground emergency broadcast host and the AC power supply, causing the backup battery to enter the discharge mode; when the backup battery enters the discharge mode, the backup battery supplies power to the underground emergency broadcast host.

[0053] Upon receiving the control command, if the control command is a charging command, the power switching module is controlled to connect the underground emergency broadcast host to an AC power source, and the backup battery enters charging mode.

[0054] The system receives a status signal sent by the underground emergency broadcast host and determines the power supply status of the underground emergency broadcast host based on the status signal; the power supply status includes: AC power supply and battery power supply.

[0055] When a discharge command is sent to the execution module, if the power supply status of the downhole emergency broadcast host is not battery powered, an alarm will be issued.

[0056] When a charging command is sent to the execution module, if the power supply status of the underground emergency broadcast host is not AC power, an alarm will be issued.

[0057] This application provides a remote power self-diagnosis system and method for underground emergency broadcasting, applied to an underground emergency broadcasting host, the host being equipped with a backup battery; the system includes: a control detection module, an execution module, and a power switching module; the control detection module is configured to: send control commands to the execution module; the control commands include: a discharge command and a charging command; the execution module is configured to: receive the control commands, and if the control command is a discharge command, control the power switching module to disconnect the underground emergency broadcasting host from the AC power supply, causing the backup battery to enter a discharge mode; when the backup battery enters the discharge mode, the backup battery supplies power to the underground emergency broadcasting host; receiving the control commands, and if the control command is a charging command, control the power switching module to... The module connects the underground emergency broadcast host to an AC power source, and the backup battery enters charging mode. The control and detection module is also configured to receive status signals sent by the underground emergency broadcast host and determine the power supply status of the underground emergency broadcast host based on the status signals. The power supply status includes AC power supply and battery power supply. When a discharge command is sent to the execution module, if the power supply status of the underground emergency broadcast host is not battery power supply, an alarm is issued. When a charging command is sent to the execution module, if the power supply status of the underground emergency broadcast host is not AC power supply, an alarm is issued. This enables remote, timed, and centralized charging and discharging maintenance of the backup batteries of all underground emergency broadcast hosts, and allows for remote diagnosis of their working status, fundamentally eliminating the risk of emergency broadcast failure due to power supply problems. Attached Figure Description

[0058] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0059] Figure 1 This is a schematic diagram of the remote power self-diagnosis system for underground emergency broadcasting in this application.

[0060] Explanation of reference numerals in the attached figures:

[0061] 1-Emergency broadcast host; 11-Backup battery; 2-Control and detection module; 21-Emergency broadcast host computer; 22-System substation; 3-Execution module; 31-Remote control switch; 4-Power switching module; 41-Relay control coil; 411-Relay normally closed contact. Detailed Implementation

[0062] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0063] In some technologies, the maintenance of the backup battery in the underground emergency broadcast host is carried out manually at each broadcast point on a regular basis. This results in low efficiency and blind spots in safety control. To solve this technical problem, this application provides a remote power self-diagnosis system and method for underground emergency broadcasts. The remote power self-diagnosis system and method for underground emergency broadcasts are described below:

[0064] like Figure 1 The diagram shown is a structural schematic of the remote power self-diagnosis system for underground emergency broadcasting in this application.

[0065] This application provides a remote power self-diagnosis system for underground emergency broadcasting, applied to an underground emergency broadcasting host 1, wherein the underground emergency broadcasting host 1 is equipped with a backup battery 11; the underground emergency broadcasting host 1 is an intrinsically safe emergency broadcasting host, which has its own backup battery 11, with a nominal power supply time of 2 hours.

[0066] The system includes:

[0067] 2. Control and detection module; 3. Execution module; 4. Power switching module.

[0068] The control detection module 2 is configured as follows:

[0069] A control command is sent to the execution module 3; the control command includes a discharge command and a charging command; the discharge command is used to control the backup battery 11 to enter the discharge mode and the charging command is used to control the backup battery 11 to enter the charging mode.

[0070] The execution module 3 is configured as follows:

[0071] Upon receiving the control command, if the control command is a discharge command, the power switching module 4 is controlled to disconnect the connection between the underground emergency broadcast host 1 and the AC power supply, so that the backup battery 11 enters the discharge mode; when the backup battery 11 enters the discharge mode, the backup battery 11 supplies power to the underground emergency broadcast host 1; upon receiving the control command, if the control command is a charging command, the power switching module 4 is controlled to connect the underground emergency broadcast host 1 to the AC power supply, so that the backup battery 11 enters the charging mode.

[0072] The control detection module 2 is further configured to:

[0073] The system receives status signals from the downhole emergency broadcast host 1 and determines its power supply status based on these signals. The power supply status includes AC power and battery power. When a discharge command is sent to the execution module 3, if the downhole emergency broadcast host 1 is not powered by battery, an alarm is issued. Similarly, when a charging command is sent to the execution module 3, if the downhole emergency broadcast host 1 is not powered by AC, an alarm is issued. The alarm can be triggered by a buzzer or other means to inform the operator whether the backup battery 11 is damaged, transforming high-intensity, repetitive manual on-site work into efficient remote centralized control, significantly reducing maintenance costs and labor intensity.

[0074] This application provides a remote power self-diagnosis system for underground emergency broadcasting. When a battery discharge test is required, the operator issues a command through the control and detection module 2, activating the remote control power switching module 4, which closes its normally open contact. The DC control circuit is activated, the relay is energized, and its normally closed contact opens, thereby cutting off the AC power supply to the underground emergency broadcasting host 1. At this time, the underground emergency broadcasting host 1 automatically switches to the backup battery 11 power supply mode and begins to discharge. The control and detection module 2 can be set to discharge for a set time. After the set time is reached, it automatically issues a command to reset the remote control switch, de-energizes the relay, and restores its normally closed contact, allowing AC power to re-supply the underground emergency broadcasting host 1 and charge the backup battery 11. The entire process does not require personnel to go down into the mine, realizing remote control and maintenance of the backup battery 11 in the underground emergency broadcasting host 1.

[0075] This application provides a remote power supply self-diagnosis system for downhole emergency broadcasting, which has the following advantages:

[0076] 1. Ensuring safety: Through procedural and regular maintenance, each underground emergency broadcast host 1 is ensured to operate stably at critical moments, greatly improving the mine's safety protection capabilities.

[0077] 2. Cost reduction and efficiency improvement: Transforming high-intensity, repetitive manual on-site operations into efficient remote centralized control significantly reduces operation and maintenance costs and labor intensity.

[0078] 3. Intelligent Diagnosis: Through a comprehensive check of the charging and discharging functions of the underground emergency broadcast host 1, remote online diagnosis of the status of the underground emergency broadcast host 1 was achieved.

[0079] In this embodiment, the control detection module 2 includes:

[0080] Emergency broadcast host computer 21, system substation 22.

[0081] The emergency broadcast host computer 21 is configured as follows:

[0082] Send control commands to the system substation 22; and receive status signals sent by the downhole emergency broadcast host 1, and determine the power supply status of the downhole emergency broadcast host 1 based on the status signals; when a discharge command is sent to the execution module 3, if the power supply status of the downhole emergency broadcast host 1 is not battery powered, an alarm is issued; when a charging command is sent to the execution module 3, if the power supply status of the downhole emergency broadcast host 1 is not AC powered, an alarm is issued.

[0083] The system substation 22 is configured as follows:

[0084] Based on the control command, the model information of the downhole emergency broadcast host 1 is determined; the control command and the model information of the downhole emergency broadcast host 1 are sent to the execution module 3. Through the system substation 22, the control command can be accurately sent to the corresponding downhole emergency broadcast host 1, thereby achieving precise control connection with several downhole emergency broadcast hosts 1.

[0085] In this embodiment, the emergency broadcast host computer 21 is further configured as follows:

[0086] When a discharge command is sent to the execution module 3, if the power supply status of the underground emergency broadcast host 1 is not battery powered, a warning message is sent to the designated device. The warning message includes the model information and location information of the underground emergency broadcast host 1. The designated device is an electronic device capable of receiving electronic information. When a charging command is sent to the execution module 3, if the power supply status of the underground emergency broadcast host 1 is not AC powered, a warning message is sent to the designated device. Through the warning message, the operator can accurately locate the location of the underground emergency broadcast host 1 corresponding to the damaged backup battery 11, thereby replacing or repairing the backup battery 11 as soon as possible.

[0087] In this embodiment, the power switching module 4 includes:

[0088] The relay control coil 41 is provided with a normally closed contact 411. The normally closed contact 411 is connected to the AC power supply and the underground emergency broadcast host 1. The relay corresponding to the relay control coil 41 is a mine explosion-proof intermediate relay (model: JZX-22F), with a coil voltage of DC24V, a set of normally closed contacts, and a contact capacity of 10A / 250VAC, which meets the switching requirements of 127V AC power.

[0089] The relay control coil 41 is configured as follows:

[0090] If the received control command is a discharge command, the normally closed contact 411 of the relay is opened; when the normally closed contact 411 of the relay is opened, the AC power supply is not connected to the underground emergency broadcast host 1, and the backup battery 11 supplies power to the underground emergency broadcast host 1.

[0091] If the received control command is a charging command, the normally closed contact 411 of the relay is closed. When the normally closed contact 411 of the relay is closed, AC power is connected to the underground emergency broadcast host 1, and the backup battery 11 is switched to charging mode.

[0092] In this embodiment, the execution module 3 includes:

[0093] The remote control switch 31 is an intrinsically safe remote control switch for mining (model: KTC-2.4). This switch can receive control commands from the ground through the coal mine emergency broadcast system network.

[0094] The remote control switch 31 is configured as follows:

[0095] The system receives the control command and the model information of the downhole emergency broadcast host 1, and determines the target relay control coil connected to the downhole emergency broadcast host 1 based on the model information of the downhole emergency broadcast host 1.

[0096] If the control command is a discharge command, the target relay control coil disconnects the normally closed contact 411 of the relay, causing the backup battery 11 to enter the discharge mode.

[0097] If the control command is a charging command, the normally closed contact 411 of the target relay control coil is closed, so that the underground emergency broadcast host 1 is connected to the AC power supply and the backup battery 11 enters the charging mode.

[0098] In this embodiment, the control detection module 2 is further configured as follows:

[0099] Obtain the contact state of the normally closed contact 411 of the relay; the contact state includes: closed and open.

[0100] If the received control command is a discharge command and the contact state is closed, then a relay fault information is sent to the designated device; the relay fault information includes: the model information and location information of the relay control coil 41; if the received control command is a charging command and the contact state is open, then a relay fault information is sent to the designated device.

[0101] It is understood that when the received control command is a discharge command, the normally closed contact 411 of the relay should be in the open state. If the normally closed contact 411 of the relay is in the closed state after the received control command is a discharge command, it may be due to a communication link failure or a relay failure, which requires maintenance personnel to determine. The location of the damaged relay control coil 41 can be quickly located through the relay abnormality information.

[0102] When the received control command is a charging command, the normally closed contact 411 of the relay should be in a closed state. If the normally closed contact 411 of the relay is in an open state after the received control command is a charging command, it may be due to a communication link failure or a relay failure, which requires maintenance personnel to determine. The location of the damaged relay control coil 41 can be quickly located through the relay abnormality information.

[0103] In this embodiment, the control detection module 2 is further configured as follows:

[0104] When the underground emergency broadcast host 1 is powered by battery, the discharge voltage and discharge current of the backup battery 11 are acquired. Based on the discharge voltage and discharge current, the energy capacity and internal resistance of the backup battery 11 are determined. The energy capacity determines how much battery capacity remains. It is understood that batteries are consumables; if the battery capacity is insufficient to support usage needs, the energy capacity data can determine whether the backup battery 11 needs to be replaced. The internal resistance value determines whether the backup battery 11's endurance meets usage requirements. A higher internal resistance results in more heat generation under the same discharge current and discharge time, leading to greater energy loss and lower energy efficiency of the backup battery 11. For example, under prolonged high-current discharge, a battery with high internal resistance will experience significant heat generation due to internal resistance, causing a large amount of energy to be lost as heat, resulting in a decrease in battery endurance.

[0105] In this embodiment, the control detection module 2 is further configured as follows:

[0106] When the underground emergency broadcast host 1 is powered by AC, it acquires the charging voltage and charging current of the backup battery 11; it determines whether the charging voltage and charging current are within a preset voltage range and a preset current range. If not, it sends a charging circuit damage information to a designated device. The charging circuit damage information includes a preset charging circuit damage message and the model information of the underground emergency broadcast host 1. By determining whether the charging voltage and charging current are within the preset voltage range and preset current range, it can be determined whether the charging circuit of the backup battery 11 has been damaged. For example, if the charging voltage is too high, it may cause the backup battery 11 to explode; if the charging current is too high, it may reduce the service life of the backup battery 11. Therefore, by monitoring the charging voltage and charging current of the backup battery 11, the above situations can be avoided.

[0107] This application provides a remote power supply self-diagnosis system for downhole emergency broadcasting, which has the following beneficial effects:

[0108] (1) Remote maintenance of the emergency broadcast power supply in the main transport roadway has been achieved. The entire process can be completed remotely from the dispatch room without the need for maintenance personnel to go down into the mine.

[0109] (2) The backup battery’s ability to continuously supply power under real load was effectively tested, ensuring the reliability of the emergency broadcast in emergency situations.

[0110] (3) Compared with manual well operation, each maintenance can save about 4 hours of manpower and completely avoid the safety risks of relevant personnel in the well during the process.

[0111] (4) Standardized maintenance extends the service life of the battery, and it is expected that the battery replacement cycle can be extended from the original 2 years to 3-4 years, achieving significant safety and economic benefits.

[0112] A second aspect of this application provides a remote power supply self-diagnosis method for downhole emergency broadcasting, applied to a remote power supply self-diagnosis system for downhole emergency broadcasting as described in any of the above embodiments, comprising:

[0113] Send control commands to the execution module; the control commands include: discharge commands and charge commands;

[0114] Upon receiving the control command, if the control command is a discharge command, the control power switching module disconnects the connection between the underground emergency broadcast host and the AC power supply, causing the backup battery to enter the discharge mode; when the backup battery enters the discharge mode, the backup battery supplies power to the underground emergency broadcast host.

[0115] Upon receiving the control command, if the control command is a charging command, the power switching module 4 is controlled to connect the underground emergency broadcast host to an AC power source, and the backup battery enters the charging mode.

[0116] The system receives a status signal sent by the underground emergency broadcast host and determines the power supply status of the underground emergency broadcast host based on the status signal; the power supply status includes: AC power supply and battery power supply.

[0117] When a discharge command is sent to the execution module, if the power supply status of the downhole emergency broadcast host is not battery powered, an alarm will be issued.

[0118] When a charging command is sent to the execution module, if the power supply status of the underground emergency broadcast host is not AC power, an alarm will be issued.

[0119] It is worth noting that the effects of the above method embodiments can be found in the effects of the above system embodiments, and will not be repeated here.

[0120] The above detailed embodiments further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solutions of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A remote power self-diagnosis system for underground emergency broadcasting, applied to an underground emergency broadcasting host (1), wherein the underground emergency broadcasting host (1) is equipped with a backup battery (11); characterized in that, include: Control detection module (2), execution module (3), power switching module (4); The control detection module (2) is configured as follows: Send control commands to the execution module (3); the control commands include: discharge commands and charging commands; The execution module (3) is configured as follows: Upon receiving the control command, if the control command is a discharge command, the power switching module (4) is controlled to disconnect the connection between the underground emergency broadcast host (1) and the AC power supply, so that the backup battery (11) enters the discharge mode; when the backup battery (11) enters the discharge mode, the backup battery (11) supplies power to the underground emergency broadcast host (1). Upon receiving the control command, if the control command is a charging command, the power switching module (4) is controlled to connect the underground emergency broadcast host (1) to the AC power supply, and the backup battery (11) enters the charging mode. The control detection module (2) is also configured to: The status signal sent by the underground emergency broadcast host (1) is received, and the power supply status of the underground emergency broadcast host (1) is determined according to the status signal; the power supply status includes: AC power supply and battery power supply; When a discharge command is sent to the execution module (3), if the power supply status of the underground emergency broadcast host (1) is not battery powered, an alarm is issued; When a charging command is sent to the execution module (3), if the power supply status of the underground emergency broadcast host (1) is not AC power supply, an alarm will be issued.

2. The remote power supply self-diagnosis system for underground emergency broadcasting according to claim 1, characterized in that, The control and detection module (2) includes: Emergency broadcast host computer (21), system substation (22); The emergency broadcast host computer (21) is configured as follows: Send control commands to the system substation (22); In addition, it receives the status signal sent by the underground emergency broadcast host (1) and determines the power supply status of the underground emergency broadcast host (1) based on the status signal; When a discharge command is sent to the execution module (3), if the power supply status of the underground emergency broadcast host (1) is not battery powered, an alarm is issued; When a charging command is sent to the execution module (3), if the power supply status of the underground emergency broadcast host (1) is not AC power supply, an alarm will be issued; The system substation (22) is configured as follows: Based on the control command, determine the model information of the underground emergency broadcast host (1); The control command and the model information of the downhole emergency broadcast host (1) are sent to the execution module (3).

3. The remote power supply self-diagnosis system for underground emergency broadcasting according to claim 2, characterized in that, The emergency broadcast host computer (21) is further configured as follows: When a discharge command is sent to the execution module (3), if the power supply status of the downhole emergency broadcast host (1) is not battery powered, a warning message is sent to the set device. The early warning information includes: the model information and location information of the underground emergency broadcast host (1); the setting device is an electronic device capable of receiving electronic information; When a charging command is sent to the execution module (3), if the power supply status of the underground emergency broadcast host (1) is not AC power supply, a warning message is sent to the set device.

4. The remote power supply self-diagnosis system for underground emergency broadcasting according to claim 2, characterized in that, The power switching module (4) includes: A relay control coil (41) is provided with a normally closed relay contact (411); the normally closed relay contact (411) is connected to an AC power supply and an underground emergency broadcast host (1); The relay control coil (41) is configured as follows: If the received control command is a discharge command, then the normally closed contact (411) of the relay is opened. If the received control command is a charging command, then the normally closed contact (411) of the relay is closed.

5. A remote power supply self-diagnosis system for underground emergency broadcasting according to claim 4, characterized in that, The execution module (3) includes: Remote control switch (31), the remote control switch (31) being configured to: Receive the control command and the model information of the downhole emergency broadcast host (1), and determine the target relay control coil connected to the downhole emergency broadcast host (1) according to the model information of the downhole emergency broadcast host (1); If the control command is a discharge command, the target relay control coil disconnects the normally closed contact (411) of the relay, so that the backup battery (11) enters the discharge mode. If the control command is a charging command, the normally closed contact (411) of the control coil of the target relay is closed, so that the underground emergency broadcast host (1) is connected to the AC power supply and the backup battery (11) enters the charging mode.

6. The remote power supply self-diagnosis system for underground emergency broadcasting according to claim 4, characterized in that, The control detection module (2) is also configured to: Obtain the contact state of the normally closed contact (411) of the relay; the contact state includes: closed and open; If the received control command is a discharge command and the contact state is closed, then a relay abnormality information is sent to the set device; the relay abnormality information includes: the model information and location information of the relay control coil (41); If the received control command is a charging command and the contact state is open, then a relay fault message is sent to the designated device.

7. The remote power supply self-diagnosis system for underground emergency broadcasting according to claim 1, characterized in that, The control detection module (2) is also configured to: When the power supply status of the underground emergency broadcast host (1) is battery powered, the discharge voltage and discharge current of the backup battery (11) are obtained; Based on the discharge voltage and discharge current, the energy capacity and internal resistance of the backup battery (11) are determined.

8. A remote power supply self-diagnosis system for underground emergency broadcasting according to claim 7, characterized in that, The control detection module (2) is also configured to: When the power supply status of the underground emergency broadcast host (1) is AC power supply, the charging voltage and charging current of the backup battery (11) are obtained; Determine whether the charging voltage and charging current are within the preset voltage range and preset current range, respectively. If not, send charging circuit damage information to the designated device. The charging circuit damage information includes: a preset charging circuit damage information prompt and the model information of the underground emergency broadcast host (1).

9. A remote power supply self-diagnosis method for downhole emergency broadcasting, applied to the remote power supply self-diagnosis system for downhole emergency broadcasting as described in any one of claims 1 to 8, characterized in that, include: Send control commands to the execution module; The control commands include: discharge commands and charge commands; Upon receiving the control command, if the control command is a discharge command, the control power switching module disconnects the connection between the emergency broadcast host and the AC power supply, causing the backup battery to enter the discharge mode; when the backup battery enters the discharge mode, the backup battery supplies power to the emergency broadcast host. Upon receiving the control command, if the control command is a charging command, the power switching module is controlled to connect the emergency broadcast host to an AC power source, and the backup battery enters charging mode. The system receives a status signal sent by the emergency broadcast host and determines the power supply status of the emergency broadcast host based on the status signal; the power supply status includes: AC power supply and battery power supply. When a discharge command is sent to the execution module, if the emergency broadcast host is not powered by battery, an alarm is issued. When a charging command is sent to the execution module, if the power supply status of the emergency broadcast host is not AC power, an alarm will be issued.

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