CN213875964U - Base station power supply monitoring device - Google Patents
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- CN213875964U CN213875964U CN202022825000.9U CN202022825000U CN213875964U CN 213875964 U CN213875964 U CN 213875964U CN 202022825000 U CN202022825000 U CN 202022825000U CN 213875964 U CN213875964 U CN 213875964U
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Abstract
The utility model discloses a base station power supply monitoring device, which comprises a voltage sampling circuit, an under-voltage detection circuit, a floating charge detection circuit, a first alarm and a second alarm, wherein the voltage sampling circuit is used for sampling the output voltage of a storage battery to obtain a sampling voltage and outputting the sampling voltage to the under-voltage detection circuit and the floating charge detection circuit; the undervoltage detection circuit is used for outputting a first alarm signal to the first alarm when the sampling voltage is detected to be lower than a preset undervoltage alarm threshold value so as to enable the first alarm to execute an alarm action; and the floating charge detection circuit is used for outputting a second alarm signal to the second alarm when the sampling voltage is detected to be lower than a preset floating charge alarm threshold value, so that the second alarm executes an alarm action. The utility model discloses a base station power monitoring device can carry out the in-process that supplies power to base station equipment at the battery, detects whether there is the problem of under-voltage or floating charge in the battery and reports an emergency and asks for help or increased vigilance.
Description
Technical Field
The utility model belongs to the technical field of the electron, concretely relates to base station power monitoring device.
Background
The base station power supply is the basis for normal work of base station equipment, a traditional base station power supply system consists of commercial power and a mobile oil engine power supply, the purpose of switching the power supply is achieved by detecting the states of two paths of power supplies, and particularly, when the commercial power is normal, the commercial power supplies power to the base station equipment; after the mains supply is powered off and the mobile oil engine does not arrive at the station, the base station equipment is discharged by a storage battery in the station to supply power; and after the mobile oil engine is in place, starting the mobile oil engine, and supplying power to the base station equipment by the mobile oil engine.
Because the commercial power often needs to supply power through the battery in the basic station after having a power failure, simultaneously can last the power supply for guaranteeing the battery, consequently often need utilize direct current generator to charge to the battery at the in-process of battery power supply, however, in the in-process that the battery carries out charge-discharge, the problem of undervoltage or floating charge takes place easily to the battery, lead to the output voltage of battery can't satisfy base station equipment's power supply requirement, consequently at the in-process that utilizes the battery to supply power to base station equipment, it is necessary to monitor the operating condition of battery, so that the staff in time takes corresponding measure to restore.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above shortcoming of prior art, the utility model aims at providing a base station power monitoring device aims at detecting whether the battery has under-voltage or floats the problem of filling at the in-process that supplies power to base station equipment to the staff in time takes corresponding measure to restore.
The utility model discloses a reach its purpose, the technical scheme who adopts as follows:
a base station power supply monitoring device comprises a voltage sampling circuit, an undervoltage detection circuit, a floating charge detection circuit, a first alarm and a second alarm, wherein,
the voltage sampling circuit is used for sampling the output voltage of the storage battery to obtain a sampling voltage and outputting the sampling voltage to the undervoltage detection circuit and the floating charge detection circuit;
the undervoltage detection circuit is used for outputting a first alarm signal to the first alarm when the sampling voltage is detected to be lower than a preset undervoltage alarm threshold value, so that the first alarm executes an alarm action;
and the floating charge detection circuit is used for outputting a second alarm signal to the second alarm when the sampling voltage is detected to be lower than a preset floating charge alarm threshold value, so that the second alarm executes an alarm action.
Further, the voltage sampling circuit comprises a unidirectional conductive element, a first resistor and a capacitor, wherein the anode of the unidirectional conductive element is electrically connected with the cathode of the storage battery, one end of the first resistor and one end of the capacitor respectively, and the cathode of the unidirectional conductive element is electrically connected with the anode of the storage battery, the other end of the capacitor, the anode input end of the undervoltage detection circuit and the anode input end of the floating charge detection circuit respectively; the other end of the first resistor is electrically connected with the negative input end of the undervoltage detection circuit and the negative input end of the floating charge detection circuit respectively.
Further, the voltage sampling circuit further comprises a first light emitting diode and a second resistor, wherein the anode of the first light emitting diode is electrically connected with the anode of the storage battery, and the cathode of the first light emitting diode is electrically connected with the cathode of the unidirectional conductive element through the second resistor.
Further, the undervoltage detection circuit comprises a first voltage division circuit, a first calibration circuit, a first sampling circuit and a first optical coupler, wherein the input end of the first voltage division circuit is electrically connected with the output end of the storage battery, and the output end of the first voltage division circuit is respectively electrically connected with the input end of the first calibration circuit and the input end of the first sampling circuit; the input end of the first optocoupler is electrically connected with the output end of the first calibration circuit and the output end of the first sampling circuit respectively, and the output end of the first optocoupler is electrically connected with the first alarm; the output end of the voltage sampling circuit is electrically connected with the input end of the first calibration circuit.
Further, the first calibration circuit comprises a first controllable precise voltage-stabilizing source, a second controllable precise voltage-stabilizing source, a third resistor and a fourth resistor, wherein the output end of the voltage sampling circuit is electrically connected with the anode of the first controllable precise voltage-stabilizing source, the anode of the second controllable precise voltage-stabilizing source and one end of the third resistor respectively, the other end of the third resistor is electrically connected with the cathode of the first controllable precise voltage-stabilizing source and one end of the fourth resistor respectively; a reference electrode of the first controllable precise voltage-stabilizing source is electrically connected with the output end of the first voltage-dividing circuit and the input end of the first sampling circuit respectively; and the negative electrode of the second controllable precise voltage-stabilizing source is electrically connected with the output end of the first sampling circuit and the input end of the first optocoupler respectively, and the reference electrode of the second controllable precise voltage-stabilizing source is electrically connected with the other end of the fourth resistor.
Further, the first voltage dividing circuit comprises a first potentiometer, a first voltage dividing element and a second voltage dividing element, the output end of the storage battery is electrically connected with a first fixed end of the first potentiometer, a sliding end of the first potentiometer and one end of the first voltage dividing element respectively, and a second fixed end of the first potentiometer is electrically connected with one end of the second voltage dividing element; the other end of the second voltage division element is respectively connected with the other end of the first voltage division element, the input end of the first sampling circuit and the reference electrode of the first controllable precise voltage stabilization source.
Furthermore, the floating charge detection circuit comprises a second voltage division circuit, a second calibration circuit, a second sampling circuit and a second optical coupler, wherein the input end of the second voltage division circuit is electrically connected with the output end of the storage battery, and the output end of the second voltage division circuit is respectively electrically connected with the input end of the second calibration circuit and the input end of the second sampling circuit; the input end of the second optical coupler is respectively and electrically connected with the output end of the second calibration circuit and the output end of the second sampling circuit, and the output end of the second optical coupler is electrically connected with the second alarm; the output end of the voltage sampling circuit is electrically connected with the input end of the second calibration circuit.
Further, the second calibration circuit comprises a third controllable precise voltage regulator, a fourth controllable precise voltage regulator, a fifth resistor and a sixth resistor, wherein the output end of the voltage sampling circuit is electrically connected with the anode of the third controllable precise voltage regulator, the anode of the fourth controllable precise voltage regulator and one end of the fifth resistor respectively, the other end of the fifth resistor is electrically connected with the cathode of the third controllable precise voltage regulator and one end of the sixth resistor respectively; a reference electrode of the third controllable precise voltage-stabilizing source is electrically connected with the output end of the second voltage-dividing circuit and the input end of the second sampling circuit respectively; and the negative electrode of the fourth controllable precise voltage-stabilizing source is electrically connected with the output end of the second sampling circuit and the input end of the second optocoupler respectively, and the reference electrode of the fourth controllable precise voltage-stabilizing source is electrically connected with the other end of the sixth resistor.
Further, the second voltage division circuit comprises a second potentiometer, a third voltage division element and a fourth voltage division element, the output end of the storage battery is electrically connected with the first fixed end of the second potentiometer, the sliding end of the second potentiometer and one end of the third voltage division element respectively, and the second fixed end of the second potentiometer is electrically connected with one end of the fourth voltage division element; the other end of the fourth voltage division element is electrically connected with the other end of the third voltage division element, the input end of the second sampling circuit and the reference electrode of the third controllable precise voltage stabilization source respectively.
Furthermore, the floating charge detection circuit further comprises a seventh resistor, a second light emitting diode and a fifth voltage division element, wherein one end of the fifth voltage division element is electrically connected with the output end of the second sampling circuit, the cathode of the fourth controllable precision voltage stabilization source and the cathode of the second optical coupler respectively, the other end of the fifth voltage division element is electrically connected with the cathode of the second light emitting diode and the anode of the second optical coupler respectively, and the anode of the second light emitting diode is electrically connected with the output end of the voltage sampling circuit through the seventh resistor.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a base station power supply monitoring device is used for taking a sample the output voltage of battery at the in-process that the battery supplied power to base station equipment through setting up voltage sampling circuit to the output voltage that will take a sample carries out undervoltage detection and exports to the detection circuitry that floats to fill and detect, wherein, when undervoltage detection circuit detects that the sampling voltage that voltage sampling circuit provided is less than the undervoltage warning threshold value of predetermineeing, then explain that the battery has undervoltage problem in the in-process that supplies power to base station equipment, and then arouse first alarm to report an emergency and ask for help or increased vigilance; and when the floating charge detection circuit detects that the sampling voltage provided by the voltage sampling circuit is lower than the preset floating charge alarm threshold value, the problem of floating charge of the storage battery in the process of supplying power to the base station equipment is solved, and then the second alarm is triggered to alarm, so that the problem of undervoltage or floating charge of the storage battery in the process of supplying power to the base station equipment can be automatically detected, and the alarm can be alarmed through the corresponding alarm when the problem of undervoltage or floating charge of the storage battery occurs, so that a worker can timely take corresponding measures to repair the storage battery.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of an application of a base station power supply monitoring apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an application of a base station power supply monitoring apparatus according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a storage battery according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a voltage sampling circuit according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an under-voltage detection circuit according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a float charge detection circuit according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an output interface according to an embodiment of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a base station power monitoring system, which includes a storage battery 2, a base station power monitoring device and a dc generator 1 for charging the storage battery 2, wherein the base station power monitoring device includes a voltage sampling circuit 3, an undervoltage detection circuit 4, a floating charge detection circuit 5, a first alarm 6 and a second alarm 7, an input end of the voltage sampling circuit 3 is electrically connected to an output end of the storage battery 2, an output end of the voltage sampling circuit 3 is electrically connected to an input end of the undervoltage detection circuit 4 and an input end of the floating charge detection circuit 5, an output end of the undervoltage detection circuit 4 is electrically connected to the first alarm 6, and an output end of the undervoltage detection circuit 4 is electrically connected to the second alarm 7; wherein,
the voltage sampling circuit 3 is used for sampling the output voltage of the storage battery 2 to obtain a sampling voltage and outputting the sampling voltage to the undervoltage detection circuit 4 and the floating charge detection circuit 5;
the undervoltage detection circuit 4 is used for outputting a first alarm signal to the first alarm 6 when the sampling voltage is detected to be lower than a preset undervoltage alarm threshold value, so that the first alarm 6 executes an alarm action;
and the floating charge detection circuit 5 is used for outputting a second alarm signal to the second alarm 7 when the sampling voltage is detected to be lower than the preset floating charge alarm threshold value, so that the second alarm 7 executes an alarm action.
In this embodiment, the first alarm 6 and the second alarm 7 may be configured as an audible alarm, an indicator light, an audible and visual alarm, and the like, which is not limited in this embodiment.
The base station power supply monitoring device provided by this embodiment is configured to sample the output voltage of the storage battery 2 by setting the voltage sampling circuit 3 in the process of supplying power to the base station device by the storage battery 2, and output the sampled output voltage (i.e., the sampling voltage) to the under-voltage detection circuit 4 for under-voltage detection and output the sampled output voltage to the floating charge detection circuit 5 for floating charge detection, wherein when the under-voltage detection circuit 4 detects that the sampling voltage provided by the voltage sampling circuit 3 is lower than a preset under-voltage alarm threshold, it indicates that the storage battery 2 has an under-voltage problem in the process of supplying power to the base station device, and further activates the first alarm 6 to alarm (e.g., turn on an indicator lamp); when the floating charge detection circuit 5 detects that the sampling voltage provided by the voltage sampling circuit 3 is lower than the preset floating charge alarm threshold value, the problem of floating charge of the storage battery 2 in the process of supplying power to the base station equipment is solved, and then the second alarm 7 is triggered to alarm (for example, an indicator lamp is turned on), so that whether the problem of undervoltage or floating charge exists in the process of supplying power to the base station equipment by the storage battery 2 can be automatically detected, and the alarm can be given by the corresponding alarm when the problem of undervoltage or floating charge occurs to the storage battery 2, so that a worker can timely take corresponding measures to repair the storage battery.
Further, referring to fig. 1, 3 and 4, in an exemplary embodiment, the voltage sampling circuit 3 includes a unidirectional conductive element DZ1, a first resistor R1 and a capacitor C5, wherein a positive electrode of the unidirectional conductive element DZ1 is electrically connected to a negative electrode of the battery 2, one end of the first resistor R1 and one end of the capacitor C5, respectively, and a negative electrode of the unidirectional conductive element DZ1 is electrically connected to a positive electrode of the battery 2, the other end of the capacitor C5, a positive input terminal of the under-voltage detection circuit 4 and a positive input terminal of the floating charge detection circuit 5, respectively; the other end of the first resistor R1 is electrically connected to the negative input terminal of the under-voltage detection circuit 4 and the negative input terminal of the floating charge detection circuit 5, respectively. Illustratively, the unidirectional conductive element DZ1 is a diode, preferably a zener diode; the storage battery 2 is a 48V direct-current power supply, and at the moment, in some specific application scenes, the preset under-voltage alarm threshold value can be 48.1V, and the preset floating charge alarm threshold value can be 51.6V.
In this embodiment, based on the above structural design, by using the unidirectional conductive characteristic of the unidirectional conductive element DZ1, when the positive and negative electrodes of the 48V battery 2 are connected to the two ends of the unidirectional conductive element DZ1, a voltage drop of 0.5-1V is generated at the two ends of the unidirectional conductive element DZ1, and then the differential sampling circuit composed of the capacitor C5 and the first resistor R1 is used to sample the output voltage after the voltage drop is generated and output the sampled voltage to the undervoltage detection circuit 4 and the float charge detection circuit 5, thereby realizing the voltage sampling operation of the battery 2.
Further, referring to fig. 1 and 2, in an exemplary embodiment, the voltage sampling circuit 3 further includes a first light emitting diode LED1 and a second resistor, wherein an anode of the first light emitting diode LED1 is electrically connected to an anode of the battery 2, and a cathode of the first light emitting diode LED1 is electrically connected to a cathode of the unidirectional conductive element DZ1 through the second resistor. Illustratively, the second resistor is formed by sequentially connecting a resistor R21, a resistor R22, a resistor R23 and a resistor R24 in series.
In the present embodiment, based on the above structural design, by adding the first light emitting diode LED1 in the voltage sampling circuit 3, it can be determined in real time whether the battery 2 is in a discharge state during the charging and discharging processes of the battery 2, specifically, when the first light emitting diode LED1 emits light, it indicates that the battery 2 is normally discharged, and when the first light emitting diode LED1 is turned off, it indicates that the battery 2 is not discharged (for example, the battery 2 is damaged, and the power is insufficient).
Further, referring to fig. 1 and 2, in an exemplary embodiment, the undervoltage detection circuit 4 includes a first voltage dividing circuit 41, a first calibration circuit 42, a first sampling circuit 43, and a first optical coupler 44, an input end of the first voltage dividing circuit 41 is electrically connected to an output end of the storage battery 2, and an output end of the first voltage dividing circuit 41 is electrically connected to an input end of the first calibration circuit 42 and an input end of the first sampling circuit 43, respectively; the input end of the first optocoupler 44 is respectively electrically connected with the output end of the first calibration circuit 42 and the output end of the first sampling circuit 43, and the output end of the first optocoupler 44 is electrically connected with the first alarm 6; the output terminal of the voltage sampling circuit 3 is electrically connected to the input terminal of the first calibration circuit 42.
In this embodiment, based on the above structural design, the first voltage dividing circuit 41 divides the output voltage of the storage battery 2 to obtain a first divided voltage, and transmits the first divided voltage to the first calibration circuit 42 for calibration to obtain a first calibration voltage, and the first sampling circuit 43 obtains and compares the first calibration voltage provided by the first calibration circuit 42 and the sampling voltage provided by the voltage sampling circuit 3 to obtain a first comparison signal of a high level or a low level, and outputs the first comparison signal to the first alarm 6 after performing isolation protection by the first optocoupler 44, where when the first comparison signal received by the first alarm 6 is a low level signal (at this time, the sampling voltage is lower than a preset under-voltage alarm threshold), the first alarm 6 gives an alarm (for example, an indicator light is turned on), and at this time, it indicates that the storage battery 2 has an under-voltage problem during charging and discharging; when the first comparison signal received by the first alarm 6 is a high level signal, the first alarm 6 does not act (if the indicator lamp is in an off state), which indicates that the battery 2 does not have an undervoltage problem during charging and discharging.
Further, referring to fig. 2 to 5, in an exemplary embodiment, the first calibration circuit 42 includes a first controllable precision regulator U1, a second controllable precision regulator U2, a third resistor R3 and a fourth resistor R4, wherein an output terminal of the voltage sampling circuit 3 is electrically connected to an anode of the first controllable precision regulator U1, an anode of the second controllable precision regulator U2 and one end of the third resistor R3, respectively, and the other end of the third resistor R3 is electrically connected to a cathode of the first controllable precision regulator U1 and one end of the fourth resistor R4, respectively; a reference pole of the first controllable precise voltage-stabilizing source U1 is electrically connected with the output end of the first voltage-dividing circuit 41 and the input end of the first sampling circuit 43 respectively; the negative electrode of the second controllable precise voltage-stabilizing source U2 is respectively electrically connected with the output end of the first sampling circuit 43 and the input end of the first optical coupler 44, and the reference electrode of the second controllable precise voltage-stabilizing source U2 is electrically connected with the other end of the fourth resistor R4. The models of the first controllable precise pressure stabilizing source U1 and the second controllable precise pressure stabilizing source U2 are preferably TL 431A.
In this embodiment, based on the above structural design, the first calibration circuit 42 may calibrate the first divided voltage provided by the first voltage dividing circuit 41 to obtain the first calibration voltage. It should be noted that, according to the specific circuit structure of the first calibration circuit 42 disclosed in the present embodiment, a person skilled in the art can know the specific operation principle of the first calibration circuit 42, and details thereof are not repeated herein.
Further, referring to fig. 2 to 5, in an exemplary embodiment, the first voltage dividing circuit 41 includes a first potentiometer RP1, a first voltage dividing element R01 and a second voltage dividing element R02, the output terminal of the secondary battery 2 is electrically connected to a first fixed terminal of the first potentiometer RP1, a sliding terminal of the first potentiometer RP1 and one terminal of the first voltage dividing element R01, respectively, and a second fixed terminal of the first potentiometer RP1 is electrically connected to one terminal of the second voltage dividing element R02; the other end of the second voltage dividing element R02 is electrically connected to the other end of the first voltage dividing element R01, the input end of the first sampling circuit 43, and the reference electrode of the first controllable precision voltage regulator U1, respectively. Illustratively, the first sampling circuit 43 includes a first sampling resistor R91, and the first sampling resistor R91 is configured to obtain the first calibration voltage and the sampling voltage, and compare the first calibration voltage and the sampling voltage to obtain a first comparison signal with a high level or a low level.
In the embodiment, based on the above structural design, the first voltage dividing circuit 41 may divide the output voltage of the battery 2 to obtain a first divided voltage, wherein the magnitude of the first divided voltage may be flexibly adjusted by the first potentiometer RP1 according to actual requirements (equivalent to the above under-voltage alarm threshold may be set by the first potentiometer RP 1). It should be noted that, according to the specific circuit structure of the first voltage dividing circuit 41 disclosed in the present embodiment, a person skilled in the art can know the specific operating principle of the first voltage dividing circuit 41, and details are not described herein.
Further, referring to fig. 2 to 5, in an exemplary embodiment, the under-voltage detection circuit 4 further includes an eighth resistor R8, a third light emitting diode LED3, and a sixth voltage division element R06, one end of the sixth voltage division element R06 is electrically connected to the output terminal of the first sampling circuit 43, the negative electrode of the second controllable precision voltage regulator U2, and the negative electrode of the first optical coupler 44, the other end of the sixth voltage division element R06 is electrically connected to the negative electrode of the third light emitting diode LED3 and the positive electrode of the first optical coupler 44, and the positive electrode of the third light emitting diode LED3 is electrically connected to the output terminal of the voltage sampling circuit 3 through the eighth resistor R8. Illustratively, the first voltage dividing element R01, the second voltage dividing element R02 and the sixth voltage dividing element R06 are all resistors in structural form.
In this embodiment, based on the above structural design, the first potentiometer RP1 may be adjusted to enable the third light emitting diode LED3 to emit light in a critical on/off state, so that when the under-voltage alarm threshold is set by the first potentiometer RP1, whether the under-voltage alarm threshold has reached the setting requirement may be visually determined by the light emitting state of the third light emitting diode LED 3.
Further, referring to fig. 2, 3, 4 and 6, in an exemplary embodiment, the float detection circuit 5 includes a second voltage division circuit 51, a second calibration circuit 52, a second sampling circuit 53 and a second optical coupler 54, an input end of the second voltage division circuit 51 is electrically connected to an output end of the secondary battery 2, and an output end of the second voltage division circuit 51 is electrically connected to an input end of the second calibration circuit 52 and an input end of the second sampling circuit 53, respectively; the input end of the second optocoupler 54 is respectively electrically connected with the output end of the second calibration circuit 52 and the output end of the second sampling circuit 53, and the output end of the second optocoupler 54 is electrically connected with the second alarm 7; the output terminal of the voltage sampling circuit 3 is electrically connected to the input terminal of the second calibration circuit 52.
In the present embodiment, based on the above structural design, the output voltage of the storage battery 2 is divided by the second voltage dividing circuit 51 to obtain a second divided voltage, and the second divided voltage is transmitted to the second calibrating circuit 52 for calibration to obtain a second calibrating voltage, the second sampling circuit 53 obtains the second calibrating voltage provided by the second calibrating circuit 52 and the sampling voltage provided by the voltage sampling circuit 3 for comparison, and obtains a second comparison signal with a high level or a low level, and outputs the second comparison signal to the second alarm 7 after performing isolation protection by the second optical coupler 54, wherein when the second comparison signal received by the second alarm 7 is a low level signal (at this time, the sampling voltage is lower than a preset float alarm threshold), the second alarm 7 sends an alarm (for example, an indicator light is turned on), at this time, the second alarm 7 indicates that the storage battery 2 has a float problem during charging and discharging; when the second comparison signal received by the second alarm 7 is a high level signal, the second alarm 7 does not operate (for example, the indicator lamp is in an off state), which indicates that there is no float charge problem in the charging and discharging process of the storage battery 2.
Further, referring to fig. 2, 3, 4 and 6, in an exemplary embodiment, the second calibration circuit 52 includes a third controllable precision regulator U3, a fourth controllable precision regulator U4, a fifth resistor R5 and a sixth resistor R6, wherein an output terminal of the voltage sampling circuit 3 is electrically connected to an anode of the third controllable precision regulator U3, an anode of the fourth controllable precision regulator U4 and one end of the fifth resistor R5, and the other end of the fifth resistor R5 is electrically connected to a cathode of the third controllable precision regulator U3 and one end of the sixth resistor R6, respectively; a reference electrode of the third controllable precise voltage-stabilizing source U3 is electrically connected with the output end of the second voltage-dividing circuit 51 and the input end of the second sampling circuit 53 respectively; the negative electrode of the fourth controllable precise voltage-stabilizing source U4 is respectively and electrically connected with the output end of the second sampling circuit 53 and the input end of the second optocoupler 54, and the reference electrode of the fourth controllable precise voltage-stabilizing source U4 is electrically connected with the other end of the sixth resistor R6. The model of the third controllable precise pressure stabilizing source U3 and the fourth controllable precise pressure stabilizing source U4 is preferably TL 431A.
In the present embodiment, based on the above structural design, the second calibration circuit 52 can calibrate the second divided voltage provided by the second voltage dividing circuit 51 to obtain the second calibration voltage. It should be noted that, according to the specific circuit structure of the second calibration circuit 52 disclosed in the present embodiment, a person skilled in the art can know the specific operation principle of the second calibration circuit 52, and details thereof are not repeated herein.
Further, referring to fig. 2, 3, 4 and 6, in an exemplary embodiment, the second voltage dividing circuit 51 includes a second potentiometer RP2, a third voltage dividing element R03 and a fourth voltage dividing element R04, the output terminal of the secondary battery 2 is electrically connected to a first fixed terminal of the second potentiometer RP2, a sliding terminal of the second potentiometer RP2 and one terminal of the third voltage dividing element R03, respectively, and a second fixed terminal of the second potentiometer RP2 is electrically connected to one terminal of the fourth voltage dividing element R04; the other end of the fourth voltage dividing element R04 is electrically connected to the other end of the third voltage dividing element R03, the input end of the second sampling circuit 53, and the reference electrode of the third controllable precision voltage regulator U3, respectively. Illustratively, the second sampling circuit 53 includes a second sampling resistor R92, and the second sampling resistor R92 is configured to obtain the second calibration voltage and the sampling voltage, and compare the second calibration voltage and the sampling voltage to obtain a second comparison signal with a high level or a low level.
In the present embodiment, based on the above structural design, the second voltage dividing circuit 51 can divide the output voltage of the battery 2 to obtain a second divided voltage, wherein the magnitude of the second divided voltage can be flexibly adjusted by the second potentiometer RP2 according to actual requirements (equivalent to the above float alarm threshold can be set by the second potentiometer RP 2). It should be noted that, according to the specific circuit structure of the second voltage divider circuit 51 disclosed in the present embodiment, a person skilled in the art can know the specific operating principle of the second voltage divider circuit 51, and details are not described herein.
Further, referring to fig. 2, 3, 4 and 6, in an exemplary embodiment, the floating charge detection circuit 5 further includes a seventh resistor R7, a second light emitting diode LED2 and a fifth voltage dividing element R05, one end of the fifth voltage dividing element R05 is electrically connected to the output terminal of the second sampling circuit 53, the cathode of the fourth controllable precision regulator U4 and the cathode of the second optical coupler 54, the other end of the fifth voltage dividing element R05 is electrically connected to the cathode of the second light emitting diode LED2 and the anode of the second optical coupler 54, and the anode of the second light emitting diode LED2 is electrically connected to the output terminal of the voltage sampling circuit 3 through the seventh resistor R7. Illustratively, the third voltage dividing element R03, the fourth voltage dividing element R04 and the fifth voltage dividing element R05 are all resistors.
In this embodiment, based on the above structural design, the second potentiometer RP2 may be adjusted to enable the second light emitting diode LED2 to emit light in a critical on/off state, so that when the float alarm threshold is set by the second potentiometer RP2, whether the float alarm threshold has reached the setting requirement may be visually determined by the light emitting state of the second light emitting diode LED 2.
Further, referring to fig. 2 to 7, in an exemplary embodiment, the aforementioned base station power supply monitoring apparatus further includes an output interface 8, the first optical coupler 44 is electrically connected to the first alarm 6 through the output interface 8, and the second optical coupler 54 is electrically connected to the second alarm 7 through the output interface 8.
To sum up, the utility model discloses a base station power monitoring device has following beneficial effect:
1. can be at the in-process that battery 2 supplied power to base station equipment, detect whether battery 2 has the problem of undervoltage or float and fill, and then when battery 2 appears the problem of undervoltage or float and fill, can report an emergency and ask for help or increased vigilance through corresponding alarm in real time for the staff can in time take corresponding measure to restore.
2. The whole base station power supply monitoring device can realize the processes of undervoltage detection and floating charge detection only by the processing of a pure hardware circuit without the intervention of a programmable device (such as a singlechip), thereby reducing the circuit cost.
It should be noted that, the other contents of the base station power supply monitoring apparatus disclosed in the present invention can be referred to in the prior art, and are not described herein again.
In addition, it should be noted that the descriptions related to "first", "second", etc. in the present invention are only used for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The above is only the optional embodiment of the present invention, and not therefore the limit to the patent scope of the present invention, all the concepts of the present invention utilize the equivalent structure transformation of the content of the specification and the attached drawings, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (10)
1. A base station power supply monitoring device is characterized by comprising a voltage sampling circuit, an undervoltage detection circuit, a floating charge detection circuit, a first alarm and a second alarm, wherein,
the voltage sampling circuit is used for sampling the output voltage of the storage battery to obtain a sampling voltage and outputting the sampling voltage to the undervoltage detection circuit and the floating charge detection circuit;
the undervoltage detection circuit is used for outputting a first alarm signal to the first alarm when the sampling voltage is detected to be lower than a preset undervoltage alarm threshold value, so that the first alarm executes an alarm action;
and the floating charge detection circuit is used for outputting a second alarm signal to the second alarm when the sampling voltage is detected to be lower than a preset floating charge alarm threshold value, so that the second alarm executes an alarm action.
2. The base station power supply monitoring device according to claim 1, wherein the voltage sampling circuit comprises a unidirectional conductive element, a first resistor and a capacitor, wherein a positive electrode of the unidirectional conductive element is electrically connected to a negative electrode of the battery, one end of the first resistor and one end of the capacitor, respectively, and a negative electrode of the unidirectional conductive element is electrically connected to a positive electrode of the battery, the other end of the capacitor, a positive input terminal of the undervoltage detection circuit and a positive input terminal of the floating charge detection circuit, respectively; the other end of the first resistor is electrically connected with the negative input end of the undervoltage detection circuit and the negative input end of the floating charge detection circuit respectively.
3. The base station power supply monitoring device according to claim 2, wherein the voltage sampling circuit further comprises a first light emitting diode and a second resistor, wherein an anode of the first light emitting diode is electrically connected to an anode of the storage battery, and a cathode of the first light emitting diode is electrically connected to a cathode of the unidirectional conductive element through the second resistor.
4. The base station power supply monitoring device according to claim 1, wherein the undervoltage detection circuit comprises a first voltage division circuit, a first calibration circuit, a first sampling circuit and a first optical coupler, an input end of the first voltage division circuit is electrically connected with an output end of the storage battery, and an output end of the first voltage division circuit is electrically connected with an input end of the first calibration circuit and an input end of the first sampling circuit respectively; the input end of the first optocoupler is electrically connected with the output end of the first calibration circuit and the output end of the first sampling circuit respectively, and the output end of the first optocoupler is electrically connected with the first alarm; the output end of the voltage sampling circuit is electrically connected with the input end of the first calibration circuit.
5. The base station power supply monitoring device according to claim 4, wherein the first calibration circuit comprises a first controllable precision voltage regulator, a second controllable precision voltage regulator, a third resistor and a fourth resistor, wherein an output end of the voltage sampling circuit is electrically connected with an anode of the first controllable precision voltage regulator, an anode of the second controllable precision voltage regulator and one end of the third resistor respectively, and the other end of the third resistor is electrically connected with a cathode of the first controllable precision voltage regulator and one end of the fourth resistor respectively; a reference electrode of the first controllable precise voltage-stabilizing source is electrically connected with the output end of the first voltage-dividing circuit and the input end of the first sampling circuit respectively; and the negative electrode of the second controllable precise voltage-stabilizing source is electrically connected with the output end of the first sampling circuit and the input end of the first optocoupler respectively, and the reference electrode of the second controllable precise voltage-stabilizing source is electrically connected with the other end of the fourth resistor.
6. The base station power supply monitoring device according to claim 5, wherein the first voltage dividing circuit comprises a first potentiometer, a first voltage dividing element and a second voltage dividing element, the output end of the storage battery is electrically connected to a first fixed end of the first potentiometer, a sliding end of the first potentiometer and one end of the first voltage dividing element, respectively, and a second fixed end of the first potentiometer is electrically connected to one end of the second voltage dividing element; the other end of the second voltage division element is respectively connected with the other end of the first voltage division element, the input end of the first sampling circuit and the reference electrode of the first controllable precise voltage stabilization source.
7. The base station power supply monitoring device according to any one of claims 1 to 6, wherein the float charge detection circuit comprises a second voltage division circuit, a second calibration circuit, a second sampling circuit and a second optical coupler, an input end of the second voltage division circuit is electrically connected with an output end of the storage battery, and an output end of the second voltage division circuit is electrically connected with an input end of the second calibration circuit and an input end of the second sampling circuit respectively; the input end of the second optical coupler is respectively and electrically connected with the output end of the second calibration circuit and the output end of the second sampling circuit, and the output end of the second optical coupler is electrically connected with the second alarm; the output end of the voltage sampling circuit is electrically connected with the input end of the second calibration circuit.
8. The base station power supply monitoring device according to claim 7, wherein the second calibration circuit comprises a third controllable precision regulator, a fourth controllable precision regulator, a fifth resistor and a sixth resistor, wherein the output end of the voltage sampling circuit is electrically connected with the anode of the third controllable precision regulator, the anode of the fourth controllable precision regulator and one end of the fifth resistor respectively, and the other end of the fifth resistor is electrically connected with the cathode of the third controllable precision regulator and one end of the sixth resistor respectively; a reference electrode of the third controllable precise voltage-stabilizing source is electrically connected with the output end of the second voltage-dividing circuit and the input end of the second sampling circuit respectively; and the negative electrode of the fourth controllable precise voltage-stabilizing source is electrically connected with the output end of the second sampling circuit and the input end of the second optocoupler respectively, and the reference electrode of the fourth controllable precise voltage-stabilizing source is electrically connected with the other end of the sixth resistor.
9. The base station power supply monitoring device according to claim 8, wherein the second voltage dividing circuit comprises a second potentiometer, a third voltage dividing element and a fourth voltage dividing element, the output end of the storage battery is electrically connected to the first fixed end of the second potentiometer, the sliding end of the second potentiometer and one end of the third voltage dividing element, respectively, and the second fixed end of the second potentiometer is electrically connected to one end of the fourth voltage dividing element; the other end of the fourth voltage division element is electrically connected with the other end of the third voltage division element, the input end of the second sampling circuit and the reference electrode of the third controllable precise voltage stabilization source respectively.
10. The base station power supply monitoring device according to claim 8 or 9, wherein the floating charge detection circuit further comprises a seventh resistor, a second light emitting diode and a fifth voltage dividing element, one end of the fifth voltage dividing element is electrically connected with the output end of the second sampling circuit, the cathode of the fourth controllable precision voltage stabilization source and the cathode of the second optical coupler respectively, the other end of the fifth voltage dividing element is electrically connected with the cathode of the second light emitting diode and the anode of the second optical coupler respectively, and the anode of the second light emitting diode is electrically connected with the output end of the voltage sampling circuit through the seventh resistor.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114977392A (en) * | 2022-05-26 | 2022-08-30 | 合肥恒钧检测技术有限公司 | Battery early warning circuit and consumer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114977392A (en) * | 2022-05-26 | 2022-08-30 | 合肥恒钧检测技术有限公司 | Battery early warning circuit and consumer |
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