CN218974443U

CN218974443U - Current detection module

Info

Publication number: CN218974443U
Application number: CN202221869942.XU
Authority: CN
Inventors: 匙雪冰; 张聪
Original assignee: Changchun Langruisi Environmental Protection Technology Co ltd
Current assignee: Changchun Langruisi Environmental Protection Technology Co ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2023-05-05
Anticipated expiration: 2032-07-07

Abstract

The utility model belongs to the technical field of current detection, and particularly relates to a current detection module which comprises a voltage conversion circuit, wherein the input end of the voltage conversion circuit is connected with a power supply, and the first output end of the voltage conversion circuit is connected with an enabling signal circuit. According to the utility model, the singlechip, the current detection circuit, the running state output circuit and the indicator light circuit are arranged, so that the motor train unit is specially researched and developed, and the motor train unit has strong applicability; the operation stability is higher, the anti-interference capability is stronger, the influence by external environment factors is smaller, and the failure rate is greatly reduced; the state of the load can be monitored and displayed in real time; the four paths of loads can be monitored, the monitored current value is compared with a set value, when the current value of any channel exceeds the range of the set value, the fault indication red light is on, and the operation indication light of the corresponding channel is off; when the operation is normal, the device correspondingly operates to indicate that the green light is on; the monitoring channel has the function of selecting the monitoring channel, and the monitoring channel can be selected according to specific needs.

Description

Current detection module

Technical Field

The utility model relates to the technical field of current detection, in particular to a current detection module.

Background

The existing motor train unit excrement collecting system is provided with a sewage box, and the sewage box needs a heating device to heat under a cold condition, so that the bottom of the sewage box is provided with the heating device. The function of the current detection module is to monitor and display the state of the heating device at the bottom of the sewage box.

The prior art has the following problems:

the current monitoring devices existing in the market at present have various defects: the monitoring circuits are fewer and cannot detect multiple paths; the running state indicator lamp is not available, and the running state cannot be observed in real time; the monitoring current is inaccurate, the range is too large, and the applicability to the motor train unit is relatively weak; the monitoring channel shielding function is not provided, and the monitoring channel cannot be selected; is easily interfered by external environment, and has relatively high failure rate.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a current detection module, which solves the problems that the current detection module cannot perform multi-path detection, cannot observe the running state in real time, is inaccurate in detection, does not have a shielding function and has higher failure rate.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the current detection module comprises a voltage conversion circuit, wherein the input end of the voltage conversion circuit is connected with a power supply, the first output end of the voltage conversion circuit is connected with an enabling signal circuit, the second output end of the voltage conversion circuit is connected with a singlechip connected with the enabling signal circuit, the first input end of the singlechip is connected with a current detection circuit, the second output end of the singlechip is connected with an operating state output circuit, and the output end of the singlechip is connected with an indicator lamp circuit.

As a preferable technical scheme of the utility model, the power supply is electrically connected with the singlechip through the voltage conversion circuit, and the power supply is electrically connected with the enabling signal circuit through the voltage conversion circuit.

As a preferable technical scheme of the utility model, the enabling signal circuit is electrically connected with the singlechip, and the singlechip is electrically connected with the indicator lamp circuit.

As a preferable technical scheme of the utility model, the current detection circuit is electrically connected with the indicator lamp circuit through the singlechip, and the running state output circuit is electrically connected with the indicator lamp circuit through the singlechip.

Compared with the prior art, the utility model provides a current detection module, which has the following beneficial effects:

1. the current detection module can be developed and used specially for the motor train unit by arranging the singlechip, the running state output circuit and the indicator light circuit, and has strong applicability; the system has the advantages of high running stability, high anti-interference capability, less influence by external environment factors and greatly reduced failure rate, and is provided with a central processing chip; the monitoring normal indicator lamp and the fault indicator lamp are arranged, and the state of the load can be monitored and displayed in real time.

2. The current detection module can monitor four paths of loads by arranging a current detection circuit and an indicator light circuit, compares the monitored current value with a set value, and indicates that a red light is on and an operation indicator light of a corresponding channel is off when any channel current value exceeds the range of the set value; when the operation is normal, the device correspondingly operates to indicate that the green light is on; the monitoring channel has the function of selecting the monitoring channel, and the monitoring channel can be selected according to specific needs.

Drawings

FIG. 1 is a schematic diagram of the connection structure of the internal circuitry of the current detection module of the present utility model;

FIG. 2 is a schematic diagram of an internal system structure of the voltage conversion circuit;

FIG. 3 is a schematic diagram of the internal system structure of the SCM;

FIG. 4 is a schematic diagram of the internal system structure of the current detection circuit;

FIG. 5 is a schematic diagram of the internal system architecture of the run state output circuit;

fig. 6 is a schematic diagram of a channel select function circuit.

In the figure: 1. a voltage conversion circuit; 2. a power supply; 3. an enable signal circuit; 4. a single chip microcomputer; 5. a current detection circuit; 6. an operation state output circuit; 7. an indicator light circuit.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 6, in the present embodiment: the current detection module comprises a voltage conversion circuit 1, wherein the input end of the voltage conversion circuit 1 is connected with a power supply 2, the first output end of the voltage conversion circuit 1 is connected with an enabling signal circuit 3, the second output end of the voltage conversion circuit 1 is connected with a single chip microcomputer 4 connected with the enabling signal circuit 3, the first input end of the single chip microcomputer 4 is connected with a current detection circuit 5, the second output end of the single chip microcomputer 4 is connected with an operating state output circuit 6, and the output end of the single chip microcomputer 4 is connected with an indicator lamp circuit 7.

In this embodiment, the power supply 2 is electrically connected to the single chip microcomputer 4 through the voltage conversion circuit 1, and the power supply 2 is electrically connected to the enable signal circuit 3 through the voltage conversion circuit 1 for power supply; the enabling signal circuit 3 is electrically connected with the singlechip 4, and the singlechip 4 is electrically connected with the indicator lamp circuit 7, so that the state of a load can be monitored and displayed in real time; the current detection circuit 5 is electrically connected with the indicator lamp circuit 7 through the singlechip 4, the running state output circuit 6 is electrically connected with the indicator lamp circuit 7 through the singlechip 4, the running stability is higher, the anti-interference capability is stronger, the influence by external environmental factors is smaller, and the fault rate is greatly reduced.

The working principle and the using flow of the utility model are as follows: the internal structure of the device consists of seven parts, namely a power supply 2, a voltage conversion circuit 1, a singlechip 4, a current detection circuit 5, an operation state output circuit 6, an enabling signal circuit 3 and an indicator lamp circuit 7. Wherein the voltage conversion circuit 1 has the function of converting the supply voltage into the voltage required by the circuit; the function of the current detection circuit 5 is to detect whether the monitor current exceeds a set value range; the function of the running state output circuit 6 is to monitor the running state of the load and output signals; the function of the enable signal circuit 3 is monitoring channel selection; the indicator light circuit 7 is used for monitoring state display and fault display; as shown in FIG. 1, the internal circuit of the device consists of seven parts, namely a power supply 2, a voltage conversion circuit 1, a singlechip 4, a current detection circuit 5, an operation state output circuit 6, an enabling signal circuit 3 and an indicator lamp circuit 7. The power supply 2 is connected with the voltage conversion circuit 1, the voltage conversion circuit 1 is connected with the singlechip 4 and the enabling signal circuit 3, and the singlechip 4 is respectively connected with the current detection circuit 5, the running state output circuit 6 and the indicator lamp circuit 7. When the utility model is used, the utility model can be packaged to expose 16 wiring terminals which are respectively a module power supply end, an operation state feedback end, an enabling signal end, a monitoring circuit input end and a load end. When the device is needed to be used, corresponding equipment and signals are connected to the corresponding wiring terminals. As shown in fig. 1, a 24V dc power supply is processed by a step-down circuit and then supplies power to a singlechip 4, and is connected to an enable signal circuit 3 (meaning that a connection relationship exists between the 24V dc power supply and a power supply 2, the power supply 2 supplies power to the enable signal circuit 3); the input end and the load are connected into a current detection circuit 5, the current detection circuit 5 processes signals and transmits the processed signals to the singlechip 4, the singlechip 4 finally carries out operation and outputs signals, the running state output circuit 6 is controlled to output the signals, and meanwhile, the detection state indicator lamp is controlled. As shown in fig. 2, the power supply 2 is processed by the voltage conversion circuit 1 to supply power to the singlechip 4 and other circuits in fig. 3. When the four-way load operates normally and the current value is in the set range, the four-way current detection circuit 5 in fig. 4 transmits an output signal to the singlechip 4 after detecting the current, and the singlechip 4 controls the indicator lamp circuit 7 to output after internal processing. Fig. 5 shows an operation state output circuit 6, and the singlechip 4 outputs a signal in real time to control the output of the circuit in fig. 5. Meanwhile, the device has a function of selecting a use channel, and a detection channel can be selected by controlling the enable signal circuit 3. The channel select function circuit schematic is shown in fig. 6.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The current detection module comprises a voltage conversion circuit (1), and is characterized in that: the input of voltage conversion circuit (1) is connected with power (2), the first output of voltage conversion circuit (1) is connected with enable signal circuit (3), the second output of voltage conversion circuit (1) is connected with singlechip (4) that are connected with enable signal circuit (3), the first input of singlechip (4) is connected with current detection circuit (5), the second output of singlechip (4) is connected with running state output circuit (6), the output of singlechip (4) is connected with pilot lamp circuit (7).

2. The current detection module of claim 1, wherein: the power supply (2) is electrically connected with the singlechip (4) through the voltage conversion circuit (1), and the power supply (2) is electrically connected with the enabling signal circuit (3) through the voltage conversion circuit (1).

3. The current detection module of claim 1, wherein: the enabling signal circuit (3) is electrically connected with the singlechip (4), and the singlechip (4) is electrically connected with the indicator lamp circuit (7).

4. The current detection module of claim 1, wherein: the current detection circuit (5) is electrically connected with the indicator lamp circuit (7) through the singlechip (4), and the running state output circuit (6) is electrically connected with the indicator lamp circuit (7) through the singlechip (4).