CN214543765U

CN214543765U - Auxiliary power supply timely control device for unmanned automatic weather station

Info

Publication number: CN214543765U
Application number: CN202120668239.1U
Authority: CN
Inventors: 李万友
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-10-29
Anticipated expiration: 2031-04-01

Abstract

The utility model relates to the technical field of automatic control, and an unmanned automatic meteorological station auxiliary power supply timely control device is disclosed, including the power that is used for drive arrangement work, the voltage sampler that is used for the input load voltage, the voltage detector that is used for detecting load voltage, according to the output signal of voltage detector makes the controller of electrical control switch action and according to the electrical control switch of controller output signal change on-off state, the power respectively with the voltage sampler, the voltage detector, the controller with electrical control switch electrical connection, the voltage sampler with the voltage detector electrical connection, the voltage detector with controller electrical connection, the controller with electrical control switch electrical connection; the utility model discloses simple structure, convenient to use, job stabilization, the consumption nature is little, need not to close after the start-up, can be according to the load voltage condition, in good time control auxiliary power supply, the battery does not have overcharge and load outage risk, improves the life of battery.

Description

Auxiliary power supply timely control device for unmanned automatic weather station

Technical Field

The utility model relates to an automatic control technical field specifically is an unmanned automatic meteorological station auxiliary power supply in good time controlling means.

Background

The solar power supply system of the unmanned automatic weather station comprises a solar panel, a PV controller and a storage battery, and the working principle is that the solar panel firstly sends current to the PV controller, a series of special chip circuits are adopted to carry out digital adjustment on the current, multi-stage charging and discharging protection is added to charge the storage battery, when a load is supplied with power, the current of the storage battery firstly flows into the PV controller, the current is sent to a data acquisition unit after being adjusted, and the voltage of the load and the voltage of the storage battery synchronously change; unmanned automatic weather station auxiliary power supply system includes: switching power supply, one-way controller, time controller, the theory of operation is that time controller regularly sends AC220V alternating current into switching power supply and becomes the direct current, and then charges for the battery through one-way controller, under general condition, solar energy power supply system can satisfy unmanned automatic meteorological station power consumption demand, however, to mountain area and the higher website that receives the topography and weather influence greatly of height above sea level, the phenomenon of power supply deficiency and outage easily takes place, for this reason, need install the supplementary power supply of one way additional as reserve, when meeting solar energy power supply inadequacy, turn on supplementary power supply, after solar energy power supply resumes normally, the supplementary power supply of disconnection (as shown in figure 1).

At present, the time controller is used for carrying out timing control on auxiliary power supply, the mode of switching off in the daytime and switching on at night is generally set, although the power supply of an unmanned automatic weather station can be met, because the time controller does not have the function of automatically starting and stopping according to the change of load voltage, monitoring and field operation need to be carried out manually, and the risk of power failure or overcharge of a storage battery exists.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

To the not enough of prior art, the utility model provides an unmanned automatic meteorological station assists in supplying power timely controlling means has solved the problem that exists among the above-mentioned background art (as shown in figure 2).

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an unmanned automatic meteorological station auxiliary power supply is controlling means in good time, including the power that is used for drive arrangement work, be used for the voltage sampler of input load voltage, be used for detecting load voltage's voltage detector, according to voltage detector's output signal makes the controller of electric control switch action and basis controller output signal changes on-off state electric control switch, the power respectively with voltage sampler voltage detector the controller with electric control switch electric connection, voltage sampler with voltage detector electric connection, voltage detector with controller electric connection, the controller with electric control switch electric connection.

Preferably, the power supply comprises a power supply circuit, the output voltage of the power supply circuit is DC12V, the power supply circuit comprises an AC220V AC power plug, a transformer, four diodes, three capacitors and a chip, two output ends of the AC220V AC power plug are respectively connected with two primary ends of a transformer T1, one secondary end of the transformer T1 is connected with the anode of a first diode D1 and the cathode of a fourth diode D4; the other end of the secondary pole of the transformer T1 is connected with the anode of a second diode D2 and the cathode of a third diode D3; the Vi pin of the first chip IC1 is connected with the cathode of a first diode D1 and the cathode of a second diode D2, the GND pin is connected with the anode of a third diode D3 and the anode of a fourth diode D4, a first electrolytic capacitor C1 and a second capacitor C2 are connected between the Vi pin and the GND pin in parallel, the anode of the first electrolytic capacitor C1 is connected with the Vi pin, the cathode of the first electrolytic capacitor C1 is connected with the GND pin and is grounded simultaneously, and a third capacitor C3 is connected between the Vo pin and the GND pin of the first chip IC1 in parallel.

Preferably, the voltage sampler comprises a voltage sampling circuit, the voltage sampling circuit comprises two resistors, a first resistor R1 is connected with a second resistor R2, one end of the first resistor R1 departing from the second resistor R2 is connected with the positive pole of the load output end of the PV controller, and one end of the second resistor R2 departing from the first resistor R1 is connected with the negative pole of the load output end of the PV controller.

Preferably, the voltage detector includes a voltage detection circuit, the voltage detection circuit includes a chip, a diode and four resistors, a cathode of the fifth diode D5 is connected to the third resistor R3 and the fourth resistor R4, a second resistor R2 is connected between an inverting input terminal and a negative voltage input terminal V-of the second chip IC2, an end of the second resistor R2 departing from the first resistor R1 is connected to an anode of the fifth diode D5, a negative voltage input terminal V-of the second chip IC2 is simultaneously grounded, an end of the third resistor R3 departing from the fifth diode D5 is connected to a positive voltage input terminal V + of the second chip IC2, a sixth resistor R6 is simultaneously connected to a positive voltage output terminal DC V + of the power supply circuit, an end of the fourth resistor R4 departing from the fifth diode D5 is connected to a positive input terminal V + of the second chip IC1, a fifth resistor R5, and an output terminal Vout of the second chip IC2 is connected to a fourth resistor R5, The sixth resistor R6 is away from one end of the third resistor R3, the second chip IC2 is a voltage comparator, the same phase end of the second chip IC2 is respectively provided with a high threshold voltage and a low threshold voltage corresponding to the load voltage of DC13.8V and the load voltage of DC12V, and the fifth diode D5 is a zener diode.

Preferably, the controller comprises a control circuit, the control circuit comprises a resistor and a triode, one end of the seventh resistor R7 is connected with the output terminal Vout of the second chip IC2, the other end is connected with the base of the triode Q1, the emitter of the triode Q1 is grounded, and the triode Q1 is a switching triode.

Preferably, electric switch includes electric switch circuit, electric switch circuit includes a relay and a diode, relay K1 coil two ends and even have sixth diode D6, relay K1 coil positive end is connected sixth diode D6 negative pole and is connect power supply circuit positive voltage output DC V + simultaneously, relay K1 coil negative end is connected sixth diode positive pole and is connect triode Q1's collecting electrode simultaneously, relay K1 common contact connects AC220V alternating current L looks line, relay K1 normally open contact connects switching power supply's L looks line input, AC220V alternating current N looks line direct connection switching power supply's N looks line input, relay K1 is DC12V relay.

(III) advantageous effects

The utility model provides an unmanned automatic meteorological station auxiliary power supply in good time controlling means possesses following beneficial effect:

(1) the utility model discloses simple structure, convenient to use, job stabilization.

(2) The utility model discloses the power consumption nature is little, need not to close after the start-up.

(3) The utility model discloses can be according to the load voltage condition, in good time control auxiliary power supply, the battery does not have overcharge and load outage risk, improves the life of battery.

(4) The utility model discloses solar energy high-usage, practice thrift the commercial power.

Drawings

FIG. 1 is a schematic diagram of a prior art timing control of an auxiliary power supply by using a time controller;

FIG. 2 is a schematic diagram of a timely controller for timely control of auxiliary power supply;

FIG. 3 is a schematic structural view of the present invention;

fig. 4 is a circuit diagram of the medium voltage sampling circuit, the voltage detection circuit, the control circuit and the electric control switch circuit of the present invention;

fig. 5 is a circuit diagram of the power supply circuit of the present invention.

In the figure: 1. a power source; 11. a power supply circuit; 2. a voltage sampler; 21. a voltage sampling circuit; 3. a voltage detector; 31. a voltage detection circuit; 4. a controller; 41. a control circuit; 5. an electric control switch; 51. an electrically controlled switching circuit.

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 work belong to the protection scope of the present invention.

As shown in fig. 1-5, the utility model provides a technical solution: the utility model provides an unmanned automatic meteorological station auxiliary power supply in good time controlling means, including the power 1 that is used for the drive arrangement work, a voltage sampler 2 for inputing load voltage, a voltage detector 3 for detecting load voltage, make the controller 4 of automatically controlled switch 5 action and change the automatically controlled switch 5 of on-off state according to controller 4 output signal according to the output signal of voltage detector 3, power 1 respectively with voltage sampler 2, voltage detector 3, controller 4 and automatically controlled switch 5 electric connection,

voltage sampler

2 and 3 electric connection of voltage detector,

voltage detector

3 and 4 electric connection of controller, controller 4 and automatically controlled switch 5 electric connection.

Further, the power supply 1 includes a power supply circuit 11, the output voltage of the power supply circuit 11 is DC12V, the power supply circuit 11 includes an AC220V AC power plug, a transformer, four diodes, three capacitors and a chip, two output terminals of the AC220V AC power plug are respectively connected with two primary terminals of the transformer T1, one secondary terminal of the transformer T1 is connected with the anode of the first diode D1 and the cathode of the fourth diode D4; the other end of the secondary pole of the transformer T1 is connected with the anode of a second diode D2 and the cathode of a third diode D3; the Vi pin of the first chip IC1 is connected with the cathode of a first diode D1 and the cathode of a second diode D2, the GND pin is connected with the anode of a third diode D3 and the anode of a fourth diode D4, a first electrolytic capacitor C1 and a second capacitor C2 are connected between the Vi pin and the GND pin in parallel, the anode of the first electrolytic capacitor C1 is connected with the Vi pin, the cathode of the first electrolytic capacitor C1 is connected with the GND pin and is grounded simultaneously, and a third capacitor C3 is connected between the Vo pin and the GND pin of the first chip IC1 in parallel.

Further, the voltage sampler 2 includes a voltage sampling circuit 21, the voltage sampling circuit 21 includes two resistors, a first resistor R1 is connected with a second resistor R2, one end of the first resistor R1 departing from the second resistor R2 is connected with the positive pole of the load output end of the PV controller, and one end of the second resistor R2 departing from the first resistor R1 is connected with the negative pole of the load output end of the PV controller.

Further, the voltage detector 3 includes a voltage detection circuit 31, the voltage detection circuit 31 includes a chip, a diode and four resistors, a cathode of the fifth diode D5 is connected to the third resistor R3 and the fourth resistor R4, a second resistor R2 is connected between an inverting input terminal and a negative voltage input terminal V-of the second chip IC2, an end of the second resistor R2 departing from the first resistor R1 is connected to an anode of the fifth diode D5, a negative voltage input terminal V-of the second chip IC2 is simultaneously grounded, an end of the third resistor R3 departing from the fifth diode D5 is connected to a positive voltage input terminal V + of the second chip IC2, a sixth resistor R6 is simultaneously connected to a positive voltage output terminal DC V + of the power supply circuit 11, an end of the fourth resistor R4 departing from the fifth diode D5 is connected to a positive voltage input terminal V + of the second chip IC1, a fifth resistor R5, and an output terminal Vout 3642 of the second chip IC2 is connected to a fourth resistor R5, The sixth resistor R6 is away from one end of the third resistor R3, the second chip IC2 is a voltage comparator, the same phase end of the second chip IC2 is respectively provided with a high threshold voltage and a low threshold voltage corresponding to the load voltage of DC13.8V and the load voltage of DC12V, and the fifth diode D5 is a zener diode.

Further, the controller 4 includes a control circuit 41, the control circuit 41 includes a resistor and a transistor, one end of a seventh resistor R7 is connected to the output terminal Vout of the second chip IC2, the other end is connected to the base of a transistor Q1, the emitter of the transistor Q1 is grounded, and the transistor Q1 is a switching transistor.

Further, electrically controlled switch 5 includes electrically controlled switch circuit 51, electrically controlled switch circuit 51 includes a relay and a diode, relay K1 coil two ends are even had sixth diode D6, relay K1 coil positive terminal connects sixth diode D6 negative pole and connects 11 positive voltage output DC V + of power supply circuit simultaneously, relay K1 coil negative terminal connects sixth diode positive pole and connects triode Q1's collecting electrode simultaneously, relay K1 common contact connects AC220V alternating current L looks line, relay K1 normally open contact connects switching power supply's L looks line input, AC220V alternating current N looks line direct connection switching power supply's N looks line input, relay K1 is DC12V relay.

To sum up, the utility model discloses a work flow: when the device is started, a load voltage Vin is loaded to the inverting input end-, which is lower than the voltage of the non-inverting input end + of a second chip IC2 of a voltage detection circuit 31 through a voltage sampling circuit 21, the inverting and non-inverting input voltages are compared through a second chip internal circuit, an output end Vout outputs a high level, a transmitting junction and a collecting junction of a triode Q1 are both biased positively, the triode Q1 is in saturated conduction, a magnetic field generated by electrifying a relay coil is opened under the action of the magnetic field, a normally closed contact is opened, a normally open contact is closed, an L-phase line of AC220V alternating current is communicated with the L-phase input end of a switching power supply, the switching power supply generates direct current voltage, a storage battery is charged through a one-way controller, the voltage of the storage battery starts to rise, the load voltage also rises along with the rise, when the load voltage exceeds DC13.8V, the voltage applied to the inverting input end-of the second chip IC2 through the voltage sampling circuit 21 is higher than the voltage of the non-inverting input end (high threshold voltage), the internal circuit of the second chip compares the voltages of the opposite phase end and the same phase end, the output end Vout outputs low level, the voltage of the emitting junction of the triode Q1 is smaller than the conducting voltage of the PN junction, the base current is zero and is in a cut-off state, no current passes through the current collection set, the relay coil is powered off, the magnetic field of the coil disappears, the normally closed contact is closed, the normally open contact is opened, the L-phase input end of the switching power supply is disconnected with the L-phase line of AC220V alternating current, the switching power supply has no direct current voltage, and the storage battery is stopped being charged; if the solar power supply is sufficient, the load voltage, namely Vin, is higher than 12.0V, during the period, the auxiliary power supply is in a stop state all the time, if the solar power supply is insufficient, the load voltage is reduced along with the reduction of the voltage of the storage battery, when the voltage is lower than 12.0V, the voltage which is added to the inverting input end of the second chip IC2 through the voltage sampling circuit 21 is lower than the voltage (low threshold voltage) of the non-inverting input end +, the second chip internal circuit compares the voltages of the inverting input end and the non-inverting input end, the output end Vout is high level, the process is repeated again, the auxiliary power supply is started, and the voltage of the storage battery is kept between 12V and 13.8V all the time.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an unmanned automatic weather station auxiliary power supply is controlling means in good time which characterized in that: including power (1) that is used for drive arrangement work, voltage sampler (2) that are used for the input load voltage, be used for detecting load voltage's voltage detector (3), according to the output signal of voltage detector (3) makes controller (4) of automatically controlled switch (5) action and according controller (4) output signal changes on-off state automatically controlled switch (5), power (1) respectively with voltage sampler (2), voltage detector (3) controller (4) with automatically controlled switch (5) electric connection, voltage sampler (2) with voltage detector (3) electric connection, voltage detector (3) with controller (4) electric connection, controller (4) with automatically controlled switch (5) electric connection.

2. The auxiliary power supply timing control device for the unmanned automatic weather station as claimed in claim 1, wherein: the power supply (1) comprises a power supply circuit (11), the output voltage of the power supply circuit (11) is DC12V, the power supply circuit (11) comprises an AC220V AC power plug, a transformer, four diodes, three capacitors and a chip, two output ends of the AC220V AC power plug are respectively connected with two ends of a primary pole of the transformer T1, one end of a secondary pole of the transformer T1 is connected with the anode of a first diode D1 and the cathode of a fourth diode D4; the other end of the secondary pole of the transformer T1 is connected with the anode of a second diode D2 and the cathode of a third diode D3; the Vi pin of the first chip IC1 is connected with the cathode of a first diode D1 and the cathode of a second diode D2, the GND pin is connected with the anode of a third diode D3 and the anode of a fourth diode D4, a first electrolytic capacitor C1 and a second capacitor C2 are connected between the Vi pin and the GND pin in parallel, the anode of the first electrolytic capacitor C1 is connected with the Vi pin, the cathode of the first electrolytic capacitor C1 is connected with the GND pin and is grounded simultaneously, and a third capacitor C3 is connected between the Vo pin and the GND pin of the first chip IC1 in parallel.

3. The auxiliary power supply timing control device for the unmanned automatic weather station as claimed in claim 2, wherein: the voltage sampler (2) comprises a voltage sampling circuit (21), the voltage sampling circuit (21) comprises two resistors, a first resistor R1 is connected with a second resistor R2, one end of the first resistor R1 departing from the second resistor R2 is connected with the positive pole of the load output end of the PV controller, and one end of the second resistor R2 departing from the first resistor R1 is connected with the negative pole of the load output end of the PV controller.

4. The auxiliary power supply timing control device for the unmanned automatic weather station as claimed in claim 3, wherein: the voltage detector (3) comprises a voltage detection circuit (31), the voltage detection circuit (31) comprises a chip, a diode and four resistors, the cathode of a fifth diode D5 is respectively connected with a third resistor R3 and a fourth resistor R4, a second resistor R2 is connected between the inverting input end and the negative voltage input end V-of a second chip IC2, one end of the second resistor R2 departing from the first resistor R1 is connected with the anode of the fifth diode D5, the negative voltage input end V-of the second chip IC2 is grounded, one end of the third resistor R3 departing from the fifth diode D5 is respectively connected with the positive voltage input end V + of the second chip IC2, the sixth resistor R6 is connected with the positive voltage output end DC V + of the power supply circuit (11), one end of the fourth resistor R4 departing from the fifth diode D5 is respectively connected with the positive voltage input end V + of the second chip IC1 and the fifth resistor R5, the output terminal Vout of the second chip IC2 is connected to one end of the fifth resistor R5 departing from the fourth resistor R4 and one end of the sixth resistor R6 departing from the third resistor R3, respectively, the second chip IC2 is a voltage comparator, the same-phase end of the second chip IC2 is provided with two high and low threshold voltages corresponding to load voltages of DC13.8V and DC12V, respectively, and the fifth diode D5 is a zener diode.

5. The auxiliary power supply timing control device for the unmanned automatic weather station as claimed in claim 4, wherein: the controller (4) comprises a control circuit (41), the control circuit (41) comprises a resistor and a triode, one end of a seventh resistor R7 is connected with the output end Vout of the second chip IC2, the other end of the seventh resistor R7 is connected with the base electrode of a triode Q1, the emitting electrode of the triode Q1 is grounded, and the triode Q1 is a switching triode.

6. The auxiliary power supply timing control device for the unmanned automatic weather station as claimed in claim 5, wherein: electrically controlled switch (5) includes electrically controlled switch circuit (51), electrically controlled switch circuit (51) includes a relay and a diode, relay K1 coil two ends are connected with sixth diode D6, relay K1 coil positive end connects sixth diode D6 negative pole and connects power supply circuit (11) positive voltage output DC V + simultaneously, relay K1 coil negative end connects sixth diode positive pole and connects triode Q1's collecting electrode simultaneously, relay K1 public contact connects AC220V alternating current L looks line, relay K1 normally open contact connects switching power supply's L looks line input, AC220V alternating current N looks line direct connection switching power supply's N looks line input, relay K1 is DC12V relay.