CN215953805U - Low-voltage system - Google Patents
Low-voltage system Download PDFInfo
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- CN215953805U CN215953805U CN202121649316.5U CN202121649316U CN215953805U CN 215953805 U CN215953805 U CN 215953805U CN 202121649316 U CN202121649316 U CN 202121649316U CN 215953805 U CN215953805 U CN 215953805U
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Abstract
The utility model discloses a low-voltage system, comprising: the storage battery, the photoelectric isolator, the voltage acquisition circuit, the signal adjusting circuit and the controller are connected in sequence; the signal output end of the controller is connected with the signal input end of the relay control circuit, and the signal output end of the relay control circuit is connected with the voice alarm module. By adopting the utility model, low-voltage warning can be realized more accurately.
Description
Technical Field
The utility model relates to the field of battery monitoring, in particular to a low-voltage system.
Background
A battery is a device that converts chemical energy directly into electrical energy. In daily life, many electrical devices use batteries. The voltage of the storage battery is too low, which can affect the use of the electrical equipment. At present, the detection of the low voltage of the storage battery is not accurate enough, and errors are easy to occur. Accordingly, the present inventors have provided a low pressure system to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, an object of the present invention is to provide a low voltage system, which can implement warning of low voltage more accurately.
Based on this, the utility model provides a low pressure system comprising:
the storage battery, the photoelectric isolator, the voltage acquisition circuit, the signal adjusting circuit and the controller are connected in sequence;
the signal output end of the controller is connected with the signal input end of the relay control circuit, and the signal output end of the relay control circuit is connected with the voice alarm module.
Wherein, voltage acquisition circuit includes: AD582 sample/holder.
Wherein the signal conditioning circuit comprises: the circuit comprises a first resistor, a second resistor, a third resistor, a first triode and an optical coupler, wherein after the first resistor and the second resistor are connected in series, the non-common end of the second resistor is connected to a voltage acquisition circuit, the non-common end of the first resistor is connected to a power supply, and the common end of the first resistor and the second resistor is connected with the base electrode of the first triode; the emitting electrode of the first triode is connected with a power supply, the collecting electrode of the first triode is connected to the third resistor, the other end of the third resistor is connected to the input end of the optical coupler, the output end of the optical coupler is connected with the pull-up fourth resistor, and the voltage acquisition circuit is connected with the power supply.
Wherein the optical coupler U is a Schmidt type optical coupler.
The first triode is a PNP type triode.
According to the utility model, the output signal of the storage battery is isolated through the photoelectric isolator, the voltage signal is sampled/held by the voltage acquisition circuit, namely the AD582 sampling/holding device, the voltage signal is input to the controller after being adjusted by the signal adjusting circuit, the controller judges the voltage signal, namely whether the voltage value in the voltage signal is lower than a preset voltage threshold value or not, if yes, the controller sends a starting signal to the relay control circuit, the relay control circuit controls the voice alarm module to be started, and the voice alarm module broadcasts preset alarm content.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 drawings without creative efforts.
FIG. 1 is a schematic diagram of a low pressure system provided by an embodiment of the present invention;
fig. 2 is a schematic diagram of a signal conditioning circuit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic diagram of a low pressure system provided by an embodiment of the present invention, the system comprising:
the device comprises a storage battery 101, a photoelectric isolator 102, a voltage acquisition circuit 103, a signal adjusting circuit 104 and a controller 105 which are connected in sequence;
the signal output end of the controller 105 is connected with the signal input end of the relay control circuit 106, and the signal output end of the relay control circuit 106 is connected with the voice alarm module 107.
Wherein, voltage acquisition circuit includes: AD582 sample/holder. The voice alarm module comprises a voice broadcast device. The relay control circuit is prior art.
Fig. 2 is a schematic diagram of a signal conditioning circuit according to an embodiment of the present invention, the signal conditioning circuit including: the circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a first triode T1 and an optical coupler U, wherein after the first resistor R1 and the second resistor R2 are connected in series, the non-common end of the second resistor R2 is connected to a voltage acquisition circuit, the non-common end of the first resistor R1 is connected to a power supply, and the common end of the first resistor R1 and the second resistor R2 is connected with the base electrode of the first triode T1; an emitting electrode of the first triode T1 is connected with a power supply, a collector electrode of the first triode T1 is connected to the third resistor R3, the other end of the third resistor R3 is connected to the input end of the optical coupler U, the output end of the optical coupler U is connected with the pull-up fourth resistor R4, and the voltage acquisition circuit is connected with the power supply at the same time.
Wherein the optical coupler U is a Schmidt type optical coupler.
The first transistor T1 is a PNP transistor.
The optical coupler isolates output, suppresses common-mode voltage on a line, reduces the influence of the common-mode voltage on detection precision, and improves the detection precision.
According to the utility model, the output signal of the storage battery is isolated through the photoelectric isolator, the voltage signal is sampled/held by the voltage acquisition circuit, namely the AD582 sampling/holding device, the voltage signal is input to the controller after being adjusted by the signal adjusting circuit, the controller judges the voltage signal, namely whether the voltage value in the voltage signal is lower than a preset voltage threshold value or not, if yes, the controller sends a starting signal to the relay control circuit, the relay control circuit controls the voice alarm module to be started, and the voice alarm module broadcasts preset alarm content.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (5)
1. A low pressure system, comprising:
the storage battery, the photoelectric isolator, the voltage acquisition circuit, the signal adjusting circuit and the controller are connected in sequence;
the signal output end of the controller is connected with the signal input end of the relay control circuit, and the signal output end of the relay control circuit is connected with the voice alarm module.
2. The low voltage system of claim 1, wherein the voltage acquisition circuit comprises: AD582 sample/holder.
3. The low voltage system of claim 1, wherein the signal conditioning circuit comprises: the circuit comprises a first resistor, a second resistor, a third resistor, a first triode and an optical coupler, wherein after the first resistor and the second resistor are connected in series, the non-common end of the second resistor is connected to a voltage acquisition circuit, the non-common end of the first resistor is connected to a power supply, and the common end of the first resistor and the second resistor is connected with the base electrode of the first triode; the emitting electrode of the first triode is connected with a power supply, the collecting electrode of the first triode is connected to the third resistor, the other end of the third resistor is connected to the input end of the optical coupler, the output end of the optical coupler is connected with the pull-up fourth resistor, and the voltage acquisition circuit is connected with the power supply.
4. The low voltage system of claim 3, wherein the optocoupler U is a Schmidt-type optocoupler.
5. The low voltage system of claim 3, wherein the first transistor is a PNP transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121649316.5U CN215953805U (en) | 2021-07-20 | 2021-07-20 | Low-voltage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121649316.5U CN215953805U (en) | 2021-07-20 | 2021-07-20 | Low-voltage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215953805U true CN215953805U (en) | 2022-03-04 |
Family
ID=80437608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121649316.5U Active CN215953805U (en) | 2021-07-20 | 2021-07-20 | Low-voltage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215953805U (en) |
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2021
- 2021-07-20 CN CN202121649316.5U patent/CN215953805U/en active Active
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