One-time power-off integrated manager

Abstract

The present application discloses a one-time power-off integrated manager in the field of communication equipment, including an MCU microprocessor, a clock chip, an LED display digital tube, an LED display driver chip, an LED indicator light, an output control relay, an AD conversion data acquisition element, and a DC-DC power supply element. The signal input end of the microprocessor is electrically connected to the AD conversion data acquisition element and the signal output end of the clock chip, the signal output end of the microprocessor is electrically connected to the signal input end of the LED display driver chip and the LED indicator light, and the signal output end of the LED display driver chip is electrically connected to the signal input end of the LED display digital tube. The present invention makes up for the protection function of the battery during the period when the switching power supply monitoring module of the communication base station is damaged or there is no accessory, effectively prolongs the service life of the battery, and at the same time solves the common problem of the one-time power-off control relay (LLVD) repeatedly turning on / off at high frequency that cannot be solved in the switching power supply equipment for communication.

Description

Technical Field

[0001] The invention belongs to the field of communication equipment, and in particular relates to a one-time power-off integrated manager. Background Art

[0002] The existing switching power supply of communication base stations has the following problems: the original logic and function of the one-time power-off control part cannot meet the needs of the actual working environment. After the city power outage, the one-time power-off alarm frequently occurs, causing frequent flash disconnections of the operator's (China Mobile, China Unicom, China Telecom) communication main equipment, and even damaging the communication main equipment; night is the non-assessment period for the operator's technical indicators, and after 0:00 at night is also the low-peak period for mobile phone users. The original switching power supply has no nighttime power management function. After a power outage, the battery will be exhausted during the invalid period, and there will be no electricity available during the effective period.

[0003] During the use of lead-acid battery packs, the plate sulfide crystallization and water loss occurred, resulting in an increase in the internal resistance of the battery, which could not release normal power. When the city power was cut off, the terminal voltage of the battery dropped rapidly during the discharge process. After the switch power field produced a power-off action, the load decreased and the battery power rebounded rapidly, which eventually led to the switch power supply repeatedly turning on and off, and the operator's equipment was disconnected. The traditional communication base station switch power supply one-time power-off management uses the battery voltage as the judgment basis (for example, the generally set power-off voltage is 46.00V), that is, the load is turned off or connected when the "power-off or power-on" condition of the one-time power-off is reached, which cannot adapt to the actual situation of battery voltage rebound. It does not have the function of intelligently judging whether it is a low-peak period or a non-assessment period based on real-time time, so it does not have the function of energy saving and efficiency improvement, which also increases the difficulty of on-site maintenance. The traditional communication base station switch power supply one-time power-off function management is completed by the monitoring module. In actual work, if the monitoring module is damaged, the switch power supply will fail to function after the monitoring module is damaged, causing irreversible permanent damage to the battery. Summary of the invention

[0004] The present invention is intended to provide a one-time power-off integrated manager to solve the problem that after the monitoring module of the existing switching power supply is damaged, the one-time power-off function of the switching power supply fails, causing irreversible permanent damage to the battery.

[0005] The one-time power-off integrated manager in this scheme includes an MCU microprocessor, a clock chip, an LED display digital tube, an LED display driver chip, an LED indicator light, an output control relay, an AD conversion data acquisition element and a DC-DC power supply element. The signal input end of the microprocessor is electrically connected to the AD conversion data acquisition element and the signal output end of the clock chip, the signal output end of the microprocessor is electrically connected to the signal input end of the LED display driver chip and the LED indicator light, and the signal output end of the LED display driver chip is electrically connected to the signal input end of the LED display digital tube.

[0006] Preferably, the one-time power-off integrated manager in the present invention also includes a shell, and the microprocessor, clock chip, LED display driver chip, output control relay, AD conversion data acquisition element and DC-DC power supply element are installed in the shell, and the shell is provided with multiple data interfaces, multiple buttons and a display screen, and the multiple data interfaces are electrically connected to the microprocessor, the AD conversion data acquisition element and the DC-DC power supply element respectively, the multiple buttons are electrically connected to the clock chip, and the display screen is connected to the LED display digital tube.

[0007] Preferably, a reset button is also provided on the housing, and the reset button is electrically connected to the microprocessor.

[0008] Preferably, the AD conversion data acquisition element includes a bridge rectifier and a voltage divider circuit, and the voltage divider circuit is composed of resistors R1, R2, R3, R4, R5 and a capacitor C1.

[0009] Preferably, the output control relay includes a relay K1 and a relay K2.

[0010] Preferably, the microprocessor is a single-chip microcomputer (MCU).

[0011] Preferably, an I2C data line is used for data transmission between the microprocessor and the clock chip and the LED display driver chip.

[0012] The working principle of this solution is: 1. The external input 15~60V DC voltage is converted into +5V DC voltage through the DC-DC power supply component for use by the entire integrated manager.

[0013] 2. When the AD conversion data acquisition element is used, the DC voltage is isolated by the bridge rectifier (UR1 (MB10S)), and then divided by the voltage divider circuit composed of resistors R1 / R2 / R3 / R4 / R5 and C1 to obtain a 0-5V DC analog voltage signal, which is sent to the MCU microcontroller for AD sampling to complete the analog-to-digital data conversion process. The output result is used by the microprocessor to determine the power supply status of the base station, and the microprocessor performs corresponding output control based on the result.

[0014] 3. When using the MCU microprocessor:

[0015] (1) Comprehensively analyze the AD sampling data and control relays K1 / K2 according to the defined model to complete output control;

[0016] (2) Manage the clock chip, and process the hour and minute data from the DS1307 clock chip through the I2C data bus and forward it to the LED display driver chip to complete the display and human-computer interaction functions;

[0017] (3) Drive 3 LED indicators to indicate the working status and complete the human-computer interaction function;

[0018] (4) Based on the clock data obtained by the clock chip, timing management is performed. During the period of 0:00-6:00 (users can set it according to their needs), the AC mains power, the collected DC voltage, etc. are comprehensively judged. When the AC mains power is off and the DC voltage is lower than 51V, the DC load is cut off. When the AC mains power is restored and the DC voltage reaches the floating charge voltage of -0.5V, the DC load is immediately connected, thereby achieving the purpose of intelligently analyzing the power supply status during the non-assessment period to save battery energy.

[0019] (5) The MCU microprocessor performs normal primary power-off management during the daytime period of 6:00-23:59 (users can set it as needed) based on the acquired clock data, comprehensively judges the AC power situation, and cuts off the DC load when the DC voltage reaches 46V after the power outage through the collected DC voltage, saving a small amount of power for the transmission equipment and protecting the battery pack from over-discharge.

[0020] (6) The MCU microprocessor will automatically collect the floating charge voltage during the day and save the DC floating charge voltage data for use when the mains power comes in at night;

[0021] (7) During the day, after the MCU microprocessor performs the first power-down control action due to a power outage of the AC mains, the default power-on voltage for resuming connection is 49V. When the battery pack is damaged and its rebound voltage is greater than 49V, after the third connection, the manager will stop the power-on action and continuously collect the maximum value of the battery rebound for 15 minutes, and store the maximum value in the EEPROM, which will not be lost even in case of power failure. After the AC mains power is restored, the load will be connected again to supply power to the device. This solves the problem of high-frequency repeated actions of the first power-down caused by battery damage in communication base stations.

[0022] (8) The microprocessor provides a first power-down alarm dry contact to provide an alarm signal to the power environment monitoring device and upload it to the maintenance platform.

[0023] (9) A complete reset mechanism is provided. When data chaos occurs in the system, it can be restarted and restored automatically through the watchdog, and the factory data can be restored with one key, and the data stored in the EEPROM can be read out.

[0024] 4. The LED display driver chip receives the clock data transmitted by the MCU microprocessor through the I2C data bus. After being processed by the LED display driver chip HC455, it drives a 4-digit LED display digital tube to complete the clock display.

[0025] The beneficial effects of this solution are as follows:

[0026] 1. Through internal voltage detection and intelligent judgment of multiple data points, the present invention solves the problem that the switching power supply frequently experiences the first power-down and the operator's equipment frequently flashes due to battery damage.

[0027] 2. The present invention introduces a timing function. By combining time and battery voltage, it can intelligently judge whether it is at night and whether to cut off the load, thus solving the problem of energy storage of the battery during non-important time periods and achieving an energy-saving effect.

[0028] 3. The present invention makes up for the protection function of the battery during the period when the switching power supply monitoring module of the communication base station is damaged or there are no spare parts, effectively extending the service life of the battery.

[0029] 4. The present invention can also solve the problem that the existing switching power supply cannot perform energy efficiency management functions at night.

[0030] 5. The present invention can also solve the problem that the existing switching power supply cannot control the high-frequency first power-down flash. Description of the Drawings

[0031] Figure 1 It is the front view of the housing of the first power-down integrated manager of the present invention;

[0032] Figure 2This is a flow chart of the one-time power-off integrated manager of the present invention;

[0033] Figure 3 A circuit diagram of a microprocessor, a clock chip, an LED display driver chip and an output control relay in the one-time power-off integrated manager of the present invention;

[0034] Figure 4 A circuit diagram of an AD conversion data acquisition element in a one-time power-off integrated manager of the present invention;

[0035] Figure 5 The present invention is a circuit diagram of a DC-DC power supply element in a one-time power-off integrated manager. DETAILED DESCRIPTION

[0036] The following is further described in detail through specific implementation methods:

[0037] Example 1: Figure 3 , Figure 4 and Figure 5 As shown, a one-time power-off integrated manager includes an MCU microprocessor, a clock chip, an LED display digital tube, an LED display driver chip, an LED indicator light, an output control relay, an AD conversion data acquisition element and a DC-DC power supply element. The signal input end of the microprocessor is electrically connected to the AD conversion data acquisition element and the signal output end of the clock chip. The signal output end of the microprocessor is electrically connected to the signal input end of the LED display driver chip and the LED indicator light. The signal output end of the LED display driver chip is electrically connected to the signal input end of the LED display digital tube.

[0038] Preferably, the AD conversion data acquisition element includes a bridge rectifier and a voltage divider circuit, and the voltage divider circuit is composed of resistors R1, R2, R3, R4, R5 and a capacitor C1.

[0039] Preferably, the output control relay includes a relay K1 and a relay K2.

[0040] Preferably, the microprocessor is a single chip microcomputer (MCU).

[0041] Preferably, an I2C data line is used for data transmission between the microprocessor and the clock chip and the LED display driver chip.

[0042] Example 2, based on Example 1, adds the following content: Figure 1As shown, the one-time power-off integrated manager of this embodiment also includes a shell, and a microprocessor, a clock chip, an LED display driver chip, an output control relay, an AD conversion data acquisition component and a DC-DC power supply component are installed in the shell. The shell is provided with seven data interfaces, four buttons for setting time parameters, a reset button, and an LED digital display screen. The data interface is electrically connected to the microprocessor, the AD conversion data acquisition component and the DC-DC power supply component, respectively, the button is electrically connected to the clock chip, the display screen is connected to the LED display digital tube, and the reset button is electrically connected to the microprocessor.

[0043] The installation and debugging steps of the present invention are as follows:

[0044] Step 1: Find and confirm the LVD aviation relay that was powered off the last time the switch power was turned off. First, confirm that the operator's equipment is working properly. Use a multimeter to measure whether there is 48V voltage on the two small wires of the load (or LLVD) LVD aviation relay;

[0045] Step 2: Connect -48V from the secondary power-off front end (battery end) to the No. 2 data interface of the manager;

[0046] Step 3: Connect the positive pole of the switch power supply to the No. 1 data interface of the one-time power-off integrated manager of the present invention;

[0047] Step 4: Remove the two control wires on the LVD (Note: When removing the control wires, be careful that the tools cannot come into contact with the negative pole), and wrap and insulate the removed wires;

[0048] Step 5: Take out two leads from the No. 3 and No. 5 data interfaces of the integrated manager and connect them to the control end of the LVD aviation relay (where the two thin wires are removed);

[0049] Step 6: Debug the system time of the integrated manager, the power-off time of the equipment during the non-assessment period, and the power-on time of the equipment during the assessment period, such as Figure 2 As shown;

[0050] Step 7: Arrange the installation site and complete the installation and debugging work.

[0051] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the invention. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Power off the integrated manager once, Features: It includes a microprocessor, a clock chip, an LED display digital tube, an LED display driver chip, an LED indicator light, an output control relay, an AD conversion data acquisition element and a DC-DC power supply element. The signal input end of the microprocessor is electrically connected to the AD conversion data acquisition element and the signal output end of the clock chip. The signal output end of the microprocessor is electrically connected to the signal input end of the LED display driver chip and the LED indicator light. The signal output end of the LED display driver chip is electrically connected to the signal input end of the LED display digital tube. The output control relay includes a relay K1 and a relay K2. When in use, the microprocessor performs a comprehensive analysis of the AD sampling data and controls relays K1 / K2 to complete output control according to the defined model; Manage the clock chip, process the hour and minute data in the clock chip and forward it to the LED display driver chip to complete the display and human-computer interaction functions; Drive the LED indicator light to indicate the working status and complete the human-computer interaction function; According to the clock data obtained by the clock chip, timing management is carried out. During the set night non-assessment period, the AC mains and the collected DC voltage are comprehensively judged. When the AC mains is cut off and the DC voltage is lower than 51V, the DC load is cut off. When the AC mains is turned on and the DC voltage reaches the floating charge voltage of -0.5V, the DC load is immediately connected, realizing intelligent analysis of the power supply status during the non-assessment period to save battery power; The microprocessor performs normal power-off management during the set daytime assessment period based on the acquired clock data, comprehensively judges the AC mains power situation, and cuts off the DC load when the DC voltage reaches 46V after the power outage, saving a small amount of power for the transmission equipment and protecting the battery pack from over-discharge. The microprocessor automatically collects the floating charge voltage during the day and saves the DC floating charge voltage data for use when the mains power comes in at night; During the day, the microprocessor performs a power-off control action after an AC power outage. The default power-on voltage for recovery is 49V. When the battery pack is damaged and the rebound voltage is greater than 49V, after being connected twice, the manager will stop the power-on action for the third time, and dynamically collect the maximum value of the battery rebound for 15 minutes, and store the maximum value; after the AC power is restored, the load is connected to power the equipment, solving the problem of high-frequency repeated power-off caused by battery damage in the communication base station.

2. The one-time power-off integrated manager according to claim 1, Features: It also includes a shell, in which the microprocessor, clock chip, LED display driver chip, output control relay, AD conversion data acquisition element and DC-DC power supply element are installed. The shell is provided with multiple data interfaces, multiple buttons and a display screen. The multiple data interfaces are electrically connected to the microprocessor, the AD conversion data acquisition element and the DC-DC power supply element respectively, the multiple buttons are electrically connected to the clock chip, and the display screen is connected to the LED display digital tube.

3. The one-time power-off integrated manager according to claim 2, Features: The housing is also provided with a reset button, and the reset button is electrically connected to the microprocessor.

4. The one-time power-off integrated manager according to claim 3, Features: The AD conversion data acquisition element includes a bridge rectifier and a voltage divider circuit, and the voltage divider circuit is composed of resistors R1, R2, R3, R4, R5 and a capacitor C1.

5. The one-time power-off integrated manager according to claim 4, Features: The microprocessor is a single-chip microcomputer (MCU).

6. The one-time power-off integrated manager according to claim 5, Features: The microprocessor, the clock chip and the LED display driver chip use an I2C data line for data transmission.

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