CN111025976B

CN111025976B - Power environment monitoring host

Info

Publication number: CN111025976B
Application number: CN201911295905.5A
Authority: CN
Inventors: 俞立
Original assignee: Guangzhou Kestar Power Equipment Co ltd
Current assignee: Dongguan Platinum Shield Intelligent Technology Co.,Ltd.
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2021-03-16
Anticipated expiration: 2039-12-16
Also published as: CN111025976A

Abstract

The invention relates to the field of environment monitoring equipment, and discloses a dynamic environment monitoring host, which comprises a single chip microcomputer, a communication interface, a state interface, a simulation interface, a control interface, a data acquisition module, a strategy matching module, a man-machine interaction module, a wireless communication module and a power supply module, wherein the communication interface, the state interface, the simulation interface and the control interface are connected with the data acquisition module, and the data acquisition module, the strategy matching module, the man-machine interaction module, the wireless communication module and the power supply module are connected with the single chip microcomputer; the power supply module comprises a first diode, a fuse, a first capacitor, a first resistor, a second resistor, a first triode, a second triode, a fifth resistor, a second capacitor, a third resistor, a third capacitor, a second diode, a fourth capacitor, a transformer, a fifth capacitor, a fourth resistor, a third triode and a voltage output end. The invention has the following beneficial effects: the circuit structure is simpler, the cost is lower, convenient maintenance, the security and the reliability of circuit are higher.

Description

Power environment monitoring host

Technical Field

The invention relates to the field of environment monitoring equipment, in particular to a dynamic environment monitoring host.

Background

The power environment refers to the environment configured with power equipment, such as a transformer substation, a cabinet and the like; the intelligent comprehensive monitoring system has the advantages that safe, reliable and stable operation of power equipment is guaranteed, intelligent efficient management is achieved, and the intelligent comprehensive monitoring system has important significance, so various intelligent comprehensive monitoring system solutions are already available in the market. Fig. 1 is a schematic circuit diagram of a power supply portion of a conventional power environment monitoring host, and it can be seen from fig. 1 that the power supply portion of the conventional power environment monitoring host uses many components, has a complex circuit structure and high hardware cost, and is inconvenient to maintain. In addition, because the power supply part of the traditional dynamic environment monitoring host lacks corresponding circuit protection functions, for example: the safety and reliability of the circuit are poor due to the lack of the current-limiting protection function.

Disclosure of Invention

The invention aims to solve the technical problem of providing a power environment monitoring host which has the advantages of simpler circuit structure, lower cost, convenient maintenance and higher circuit safety and reliability, aiming at the defects in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the power environment monitoring host is constructed and comprises a single chip microcomputer, a communication interface, a state interface, a simulation interface, a control interface, a data acquisition module, a strategy matching module, a man-machine interaction module, a wireless communication module and a power supply module, wherein the communication interface, the state interface, the simulation interface and the control interface are all connected with the data acquisition module, the data acquisition module is connected with the single chip microcomputer, and the strategy matching module, the man-machine interaction module, the wireless communication module and the power supply module are all connected with the single chip microcomputer;

the power supply module comprises a first diode, a fuse, a first capacitor, a first resistor, a second resistor, a first triode, a second triode, a fifth resistor, a second capacitor, a third resistor, a third capacitor, a second diode, a fourth capacitor, a transformer, a fifth capacitor, a fourth resistor, a third triode and a voltage output end, wherein the anode of the first diode is connected with one end of 220V alternating current, the cathode of the first diode is respectively connected with one end of the first capacitor, one end of the second resistor, one end of the third capacitor and one end of a first primary coil of the transformer, the other end of the second resistor is respectively connected with the base of the first triode, the collector of the second triode and one end of the second capacitor, the emitter of the first triode is respectively connected with one end of the first resistor, the base of the second triode and one end of the fifth resistor, the collector of the first triode is respectively connected with the other end of the third capacitor and the other end of the first primary coil of the transformer, the other end of the second capacitor is connected with one end of the third resistor, the other end of the third resistor is respectively connected with one end of the second primary coil of the transformer and the cathode of the second diode, the other end of the fifth resistor is respectively connected with one end of the fourth capacitor and the other end of the second primary coil of the transformer, one end of the fuse is connected with the other end of the 220V alternating current, the other end of the fuse is respectively connected with the other end of the first capacitor, the other end of the first resistor, the emitter of the second triode, the anode of the second diode and the other end of the fourth capacitor, one end of the secondary coil of the transformer is respectively connected with one end of the fifth capacitor, one end of the secondary coil of the transformer, the second diode, the third diode, One end of the fourth resistor is connected with the voltage output end, the other end of the secondary coil of the transformer is connected with the cathode of the third diode, and the other end of the fifth capacitor is connected with the other end of the fourth resistor and the anode of the third diode respectively.

In the power environment monitoring host machine, the resistance value of the fifth resistor is 36k Ω.

In the power environment monitoring host of the invention, the power supply module further comprises a fourth diode, an anode of the fourth diode is connected with an emitter of the first triode, and a cathode of the fourth diode is connected with one end of the first resistor.

In the power environment monitoring host machine, the model of the fourth diode is S-272T.

In the power environment monitoring host of the invention, the power supply module further includes a fifth diode, an anode of the fifth diode is respectively connected with the other end of the second resistor and a base of the first triode, and a cathode of the fifth diode is respectively connected with a collector of the second triode and one end of the second capacitor.

In the power environment monitoring host machine, the type of the fifth diode is E-822.

In the power environment monitoring host of the invention, the first triode is an NPN type triode.

In the power environment monitoring host of the invention, the second triode is an NPN type triode.

In the power environment monitoring host of the invention, the wireless communication module is any one or combination of any more of a 5G communication module, a 4G communication module, a Bluetooth module, a WiFi module, a GSM module, a CDMA2000 module, a WCDMA module, a TD-SCDMA module, a Zigbee module and a LoRa module.

The power environment monitoring host has the following beneficial effects: the intelligent control system is provided with a singlechip, a communication interface, a state interface, a simulation interface, a control interface, a data acquisition module, a strategy matching module, a man-machine interaction module, a wireless communication module and a power supply module; the power supply module comprises a first diode, a fuse, a first capacitor, a first resistor, a second resistor, a first triode, a second triode, a fifth resistor, a second capacitor, a third resistor, a third capacitor, a second diode, a fourth capacitor, a transformer, a fifth capacitor, a fourth resistor, a third triode and a voltage output end.

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 circuit diagram of a power supply portion of a conventional dynamic environment monitoring host;

FIG. 2 is a schematic structural diagram of an embodiment of a power environment monitoring host according to the present invention;

fig. 3 is a schematic circuit diagram of the power supply module in the embodiment.

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.

In the embodiment of the power environment monitoring host of the invention, a schematic structural diagram of the power environment monitoring host is shown in fig. 2. In fig. 2, the power environment monitoring host comprises a single chip microcomputer 1, a communication interface 2, a state interface 3, a simulation interface 4, a control interface 5, a data acquisition module 6, a strategy matching module 7, a human-computer interaction module 8, a wireless communication module 9 and a power supply module 10, wherein the communication interface 2, the state interface 3, the simulation interface 4 and the control interface 5 are all connected with the data acquisition module 6, the data acquisition module 6 is connected with the single chip microcomputer 1, and the strategy matching module 7, the human-computer interaction module 8, the wireless communication module 9 and the power supply module 10 are all connected with the single chip microcomputer 1.

The data acquisition module 6 is used for transmitting acquired data and receiving control signals, and the data acquisition module 6 acquires information or controls output through corresponding hardware ports according to configuration and acquired power equipment attributes. A data information acquisition mode: the status information is obtained through the status interface 3, including on-off signals, such as: state of the switch, state of voltage, presence or absence of power, etc. Analog information is obtained via the analog interface 4, including a continuously varying voltage signal or a continuously varying current signal. The equipment information is acquired through the communication interface 2, and according to the power equipment communication interface attribute and the communication protocol which are monitored and acquired, the data such as the state, continuous change, discrete change and the like in the monitored power equipment are acquired through the corresponding port. And controlling a data output mode, wherein when a certain condition is triggered, the control interface 5 controls corresponding equipment according to a data processing result or a server-side control requirement of the strategy matching module, and a control path comprises an electric control switch or a semiconductor switch and the like.

The singlechip 1 is responsible for acquiring corresponding acquired data from the data acquisition module 6, and submitting the acquired data to the wireless communication module 9 after processing; meanwhile, the single chip microcomputer 1 submits the acquired data to the strategy matching module 7 and acquires the execution data to execute. The singlechip 1 provides relevant parameters and configuration information of the data acquisition server to an operation user through the human-computer interaction module 8 and receives manual setting of the user.

The strategy matching module 7 matches a preset matching strategy according to the acquired data submitted by the singlechip 1 to obtain execution data such as a control mode (for example, controlling the action of a control interface and controlling equipment through a protocol), an alarm mode (for example, sending a short message, an alarm mail and the like), and the execution data is delivered to the singlechip 1 for execution.

The wireless communication module 9 provides a data transmission channel between a data demand party such as an upper computer, a server or cloud storage and the power environment monitoring host according to a configuration or data transmission strategy. The data transmission channel adopts an Ethernet transmission mode, and the data transmission is reliable and quick. The wireless communication module 9 sends alarm information to related personnel according to the data submitted by the singlechip 1.

In this embodiment, the wireless communication module 9 is any one or a combination of any several of a 5G communication module, a 4G communication module, a bluetooth module, a WiFi module, a GSM module, a CDMA2000 module, a WCDMA module, a TD-SCDMA module, a Zigbee module, and a LoRa module. Through setting up multiple wireless communication mode, not only can increase the flexibility of wireless communication mode, can also satisfy the demand of different users and different occasions. Especially, when adopting the loRa module, its communication distance is far away, and communication performance is comparatively stable, is applicable to the occasion that requires the communication quality to be higher. The adoption of the 5G communication mode can achieve high data rate, reduce delay, save energy, reduce cost, improve system capacity and realize large-scale equipment connection.

Fig. 3 is a schematic circuit diagram of a power supply module in this embodiment, in fig. 3, the power supply module 10 includes a first diode D1, a fuse F1, a first capacitor C1, a first resistor R1, a second resistor R2, a first transistor Q1, a second transistor Q2, a fifth resistor R5, a second capacitor C2, a third resistor R3, a third capacitor C3, a second diode D2, a fourth capacitor C4, a transformer T, a fifth capacitor C5, a fourth resistor R4, a third transistor Q3, and a voltage output terminal Vo, wherein an anode of the first diode D1 is connected to one end of the 220V ac power, a cathode of the first diode D1 is connected to one end of the first capacitor C1, one end of the second resistor R2, one end of the third capacitor C3 and one end of a first primary coil of the transformer T, and the other end of the second resistor R2 is connected to one end of a base of the first transistor Q1, a base 2 of the first transistor Q1, a collector of the second transistor Q2, an emitter of a first triode Q1 is respectively connected with one end of a first resistor R1, a base of a second triode Q2 and one end of a fifth resistor R5, a collector of the first triode Q1 is respectively connected with the other end of a third capacitor C3 and the other end of a first primary coil of a transformer T, the other end of a second capacitor C2 is connected with one end of a third resistor R3, the other end of the third resistor R3 is respectively connected with one end of a second primary coil of the transformer T and a cathode of a second diode D2, the other end of the fifth resistor R5 is respectively connected with one end of a fourth capacitor C4 and the other end of the second primary coil of the transformer T, one end of a fuse F1 is connected with the other end of 220V alternating current, the other end of a fuse F1 is respectively connected with the other end of the first capacitor C1, the other end of the first resistor R1, an emitter of the second triode Q2, an anode of the second diode D2 and the other end of the fourth capacitor C4, one end of a secondary coil of the transformer T is connected to one end of a fifth capacitor C5, one end of a fourth resistor R4, and the voltage output terminal Vo, respectively, the other end of the secondary coil of the transformer T is connected to a cathode of a third diode D3, and the other end of the fifth capacitor C5 is connected to the other end of the fourth resistor R4 and an anode of a third diode D3, respectively.

Compared with the power supply part of the traditional power environment monitoring host in fig. 1, the power supply module 10 has the advantages of fewer used components, simpler circuit structure and convenience in maintenance, and can reduce the hardware cost due to the fact that some components are saved. The fifth resistor R5 is a current limiting resistor for current limiting protection. The current limiting protection principle is as follows: when the current of the branch where the fifth resistor R5 is located is large, the current of the branch where the fifth resistor R5 is located can be reduced by the fifth resistor R5, so that the branch can be kept in a normal operating state, and the components in the circuit cannot be burnt out due to the large current, so that the safety and reliability of the circuit are high. It should be noted that, in the present embodiment, the resistance of the fifth resistor R5 is 36k Ω. Of course, in practical applications, the resistance of the fifth resistor R5 may be adjusted accordingly, that is, the resistance of the fifth resistor R5 may be increased or decreased accordingly.

The working principle of the power supply module 10 is as follows: after the power supply is switched on, the first capacitor C1 has a dc voltage of about 280V, the second resistor R2 supplies current to the base of the first triode Q1, the emitter of the first triode Q1 has a first resistor R1 (current detection resistor), the base of the first triode Q1 is powered on, collector current is generated through the first primary coil of the transformer T, and induced voltage is generated on the second primary coil and the secondary coil of the transformer T at the same time, the two coils with the same secondary insulation turns, wherein the output of the secondary coil of the transformer T is rectified by the third diode D3, and filtered by the fifth capacitor C5, and then is connected with the voltage output terminal Vo to supply power to the load.

Wherein, the second primary coil of the transformer T is rectified by the second diode D2, filtered by the second capacitor C2, and then passes through the fifth resistor R5 and the second triode Q2 to form a sampling comparison circuit, and the output voltage is detected to be high or low, wherein, the second primary coil of the transformer T, the second capacitor C2 and the third resistor R3 also form a positive feedback circuit of the first triode Q1, so that the first triode Q1 works in high frequency oscillation and continuously supplies power to the first primary coil switch of the transformer T, when the output voltage is increased due to light load or high power voltage, the sampling comparison of the second primary coil of the transformer T and the fifth resistor R5 leads to the conduction of the second triode Q2, the base current of the first triode Q1 is reduced, the collector current of the first triode Q1 is reduced, the load capacity is reduced, thus leading to the output voltage of the voltage output end to be reduced, when the output voltage of the voltage output end Vo is reduced, the second triode Q2 is cut off after sampling, the load capacity of the first triode Q1 becomes strong, the output voltage of the voltage output end Vo is increased, and thus the automatic voltage stabilizing effect is achieved.

When the load is overloaded or short-circuited, the collector current of the first triode Q1 is greatly increased, the first resistor R1 generates a higher voltage drop, the high voltage generated by the overload or short-circuit can make the second triode Q2 conduct in saturation, and the fifth capacitor C5 plays a role of an accelerating capacitor here, so that the second triode Q2 can be conducted in the fastest time, and the first triode Q1 is cut off to stop outputting, thereby preventing overload damage. Varying the magnitude of the first resistor R1 may vary the load capacity.

The transformer T is an inductance element, the first triode Q1 operates in a switching state, when the first triode Q1 is turned off, the transformer T generates a very high electromagnetic induction voltage, and under the condition of no load, a very high voltage may be induced at the collector of the first triode Q1, which may be as high as 900V or more, which may cause the first triode Q1 to break down, and the fourth resistor R4 prevents the circuit from having no load, so that the first triode Q1 is not damaged due to the high voltage breakdown of the collector.

In this embodiment, the first transistor Q1 is an NPN transistor, and the second transistor Q2 is an NPN transistor. Certainly, in practical applications, the first transistor Q1 and the second transistor Q2 may both adopt PNP transistors, but the circuit structure is also changed accordingly.

In this embodiment, the power supply module 10 further includes a fourth diode D4, an anode of the fourth diode D4 is connected to an emitter of the first transistor Q1, and a cathode of the fourth diode D4 is connected to one end of the first resistor R1. The fourth diode D4 is a current limiting diode for current limiting protection of the emitter current of the first transistor Q1. The current limiting protection principle is as follows: when the emitter current of the first triode Q1 is large, the fourth diode D4 can reduce the emitter current of the first triode Q1 to keep the first triode Q1 in a normal operating state, so that the device in the circuit is not burned out due to too large current, and the safety and reliability of the circuit are further enhanced. It should be noted that in the present embodiment, the model of the fourth diode D4 is S-272T. Of course, in practical applications, other types of diodes with the same function may be used as the fourth diode D4.

In this embodiment, the power supply module 10 further includes a fifth diode D5, an anode of the fifth diode D5 is connected to the other end of the second resistor R2 and the base of the first transistor Q1, and a cathode of the fifth diode D5 is connected to a collector of the second transistor Q2 and one end of the second capacitor C2. The fifth diode D5 is a current limiting diode for current limiting protection. The current limiting protection principle is as follows: when the current of the branch in which the fifth diode D5 is located is large, the current of the branch in which the fifth diode D5 is located can be reduced by the fifth diode D5, so that the branch can be kept in a normal operating state, and the device in the circuit cannot be burned out due to the large current, so that the safety and reliability of the circuit are further enhanced. It should be noted that in the present embodiment, the fifth diode D5 has a model number E-822. Of course, in practical applications, the fifth diode D5 may also be another type of diode with the same function.

In short, in this embodiment, compared with the power supply part of the conventional power environment monitoring host, the power supply module 10 uses fewer components, has a simpler circuit structure, is convenient to maintain, and can reduce the hardware cost due to the fact that some components are saved. In addition, since the power supply module 10 is provided with a current limiting resistor, the safety and reliability of the circuit are high.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A power environment monitoring host is characterized by comprising a single chip microcomputer, a communication interface, a state interface, a simulation interface, a control interface, a data acquisition module, a strategy matching module, a human-computer interaction module, a wireless communication module and a power supply module, wherein the communication interface, the state interface, the simulation interface and the control interface are all connected with the data acquisition module, the data acquisition module is connected with the single chip microcomputer, and the strategy matching module, the human-computer interaction module, the wireless communication module and the power supply module are all connected with the single chip microcomputer;

the power supply module comprises a first diode, a fuse, a first capacitor, a first resistor, a second resistor, a first triode, a second triode, a fifth resistor, a second capacitor, a third resistor, a third capacitor, a second diode, a fourth capacitor, a transformer, a fifth capacitor, a fourth resistor, a third diode and a voltage output end, wherein the anode of the first diode is connected with one end of 220V alternating current, the cathode of the first diode is respectively connected with one end of the first capacitor, one end of the second resistor, one end of the third capacitor and one end of a first primary coil of the transformer, the other end of the second resistor is respectively connected with the base of the first triode, the collector of the second triode and one end of the second capacitor, the emitter of the first triode is respectively connected with one end of the first resistor, the base of the second triode and one end of the fifth resistor, the collector of the first triode is respectively connected with the other end of the third capacitor and the other end of the first primary coil of the transformer, the other end of the second capacitor is connected with one end of the third resistor, the other end of the third resistor is respectively connected with one end of the second primary coil of the transformer and the cathode of the second diode, the other end of the fifth resistor is respectively connected with one end of the fourth capacitor and the other end of the second primary coil of the transformer, one end of the fuse is connected with the other end of the 220V alternating current, the other end of the fuse is respectively connected with the other end of the first capacitor, the other end of the first resistor, the emitter of the second triode, the anode of the second diode and the other end of the fourth capacitor, one end of the secondary coil of the transformer is respectively connected with one end of the fifth capacitor, one end of the secondary coil of the transformer, the second diode, the third diode, One end of the fourth resistor is connected with the voltage output end, the other end of the secondary coil of the transformer is connected with the cathode of the third diode, and the other end of the fifth capacitor is connected with the other end of the fourth resistor and the anode of the third diode respectively.

2. The dynamic environment monitoring host machine according to claim 1, wherein the resistance value of the fifth resistor is 36k Ω.

3. The dynamic environment monitoring host machine of claim 2, wherein the power supply module further comprises a fourth diode, an anode of the fourth diode is connected to the emitter of the first triode, and a cathode of the fourth diode is connected to one end of the first resistor.

4. The dynamic environment monitoring host machine of claim 3, wherein the fourth diode is of type S-272T.

5. The dynamic environment monitoring host machine according to claim 4, wherein the power supply module further includes a fifth diode, an anode of the fifth diode is connected to the other end of the second resistor and the base of the first triode, respectively, and a cathode of the fifth diode is connected to a collector of the second triode and one end of the second capacitor, respectively.

6. The dynamic environment monitoring host computer of claim 5, wherein the fifth diode is of type E-822.

7. The dynamic environment monitoring host machine according to any one of claims 1 to 6, wherein the first triode is an NPN type triode.

8. The dynamic environment monitoring host machine according to any one of claims 1 to 6, wherein the second triode is an NPN triode.

9. The dynamic environment monitoring host machine according to any one of claims 1 to 6, wherein the wireless communication module is any one or a combination of any several of a 5G communication module, a 4G communication module, a Bluetooth module, a WiFi module, a GSM module, a CDMA2000 module, a WCDMA module, a TD-SCDMA module, a Zigbee module and a LoRa module.