CN214626514U - Power distribution cabinet monitoring system - Google Patents
Power distribution cabinet monitoring system Download PDFInfo
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- CN214626514U CN214626514U CN202121326616.XU CN202121326616U CN214626514U CN 214626514 U CN214626514 U CN 214626514U CN 202121326616 U CN202121326616 U CN 202121326616U CN 214626514 U CN214626514 U CN 214626514U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The utility model relates to a switch board monitored control system, including voltage monitoring device, current monitoring device, temperature monitoring device, smog monitoring device, on-off state monitoring device and main wireless data transmission device, voltage monitoring device, current monitoring device, temperature monitoring device, smog monitoring device and on-off state monitoring device connect main wireless data transmission device. Each monitoring device is independent each other, even if wherein a certain one breaks down, only the unable output data of monitoring device that breaks down, other normal still can normally output the detected data, compare in the current as long as main control unit breaks down, the mode that the data that all sensors detected all can't be exported, the reliability obtains very big promotion, moreover, the control division is whole to be broken into parts, microprocessor among each monitoring device only needs to handle the data that the corresponding sensor detected, the work burden is lighter, promote data processing efficiency, microprocessor's life is prolonged.
Description
Technical Field
The utility model relates to a switch board monitored control system.
Background
When monitoring the switch board, the current switch board monitoring device is that all sensors are connected with a main controller, and the main controller transmits each obtained data to the wireless communicator for wireless transmission. When main control unit broke down, the data that all sensors detected all can't be exported, and the control reliability is relatively poor, and main control unit's work burden is heavier moreover.
SUMMERY OF THE UTILITY MODEL
The utility model provides a switch board monitored control system for the control reliability of solving current switch board monitoring mode is than poor technical problem.
A power distribution cabinet monitoring system, comprising:
the voltage monitoring device comprises a voltage sensor and a first microprocessor, wherein the signal output end of the voltage sensor is connected with the signal input end of the first microprocessor;
the current monitoring device comprises a current sensor and a second microprocessor, wherein the signal output end of the current sensor is connected with the signal input end of the second microprocessor;
the temperature monitoring device comprises a temperature sensor and a third microprocessor, wherein the signal output end of the temperature sensor is connected with the signal input end of the third microprocessor;
the smoke monitoring device comprises a smoke sensor and a fourth microprocessor, wherein the signal output end of the smoke sensor is connected with the signal input end of the fourth microprocessor;
the switch state monitoring device comprises a switch state detector and a fifth microprocessor, wherein the signal output end of the switch state detector is connected with the signal input end of the fifth microprocessor; and
and the signal output ends of the first microprocessor, the second microprocessor, the third microprocessor, the fourth microprocessor and the fifth microprocessor are connected with the signal input end of the main wireless data transmission device, and the main wireless data transmission device is used for wirelessly transmitting each received detection data.
Preferably, the power distribution cabinet monitoring system further includes a standby wireless data transmission device, a first selection switch, a second selection switch, a third selection switch, a fourth selection switch and a fifth selection switch, and the first selection switch, the second selection switch, the third selection switch, the fourth selection switch and the fifth selection switch all include a movable end, a first immovable end and a second immovable end;
the signal output end of the first microprocessor is connected with the movable end of the first selection switch, the first immovable end of the first selection switch is connected with the signal input end of the main wireless data transmission device, and the second immovable end of the first selection switch is connected with the signal input end of the standby wireless data transmission device;
the signal output end of the second microprocessor is connected with the movable end of the second selection switch, the first immovable end of the second selection switch is connected with the signal input end of the main wireless data transmission device, and the second immovable end of the second selection switch is connected with the signal input end of the standby wireless data transmission device;
the signal output end of the third microprocessor is connected with the movable end of the third selector switch, the first immovable end of the third selector switch is connected with the signal input end of the main wireless data transmission device, and the second immovable end of the third selector switch is connected with the signal input end of the standby wireless data transmission device;
a signal output end of the fourth microprocessor is connected with a movable end of the fourth selection switch, a first fixed end of the fourth selection switch is connected with a signal input end of the main wireless data transmission device, and a second fixed end of the fourth selection switch is connected with a signal input end of the standby wireless data transmission device;
and the signal output end of the fifth microprocessor is connected with the movable end of the fifth selection switch, the first immovable end of the fifth selection switch is connected with the signal input end of the main wireless data transmission device, and the second immovable end of the fifth selection switch is connected with the signal input end of the standby wireless data transmission device.
Preferably, the power distribution cabinet monitoring system further comprises an identity recognizer, a human body infrared sensor, a non-logic operation circuit, a first AND logic operation circuit and an alarm;
the identity recognizer is used for outputting a high level signal when identity recognition passes and outputting a low level signal when the identity recognition does not pass or the identity recognizer is in an idle state;
the human body infrared sensor is used for outputting a high level signal when detecting that human body infrared signals exist in a preset range around the power distribution cabinet, and outputting a low level signal when detecting that no human body infrared signals exist in the preset range around the power distribution cabinet;
the signal output end of the identity recognizer is connected with the signal input end of the non-logic operation circuit, the signal output ends of the non-logic operation circuit and the human body infrared sensor are connected with the signal input end of the first and logic operation circuit, the signal output end of the first and logic operation circuit is connected with the alarm, and the alarm is controlled by a high level signal.
Preferably, the power distribution cabinet monitoring system further comprises a power distribution cabinet door state detector and a second and logic operation circuit, wherein the power distribution cabinet door state detector is used for outputting a high level signal when the cabinet door is in an open state, and outputting a low level signal when the cabinet door is in a closed state;
the signal output ends of the identity recognizer and the power distribution cabinet door state detector are connected with the signal input end of the second and logic operation circuit, the signal output end of the second and logic operation circuit is connected with the data transmission stopping instruction end of the main wireless data transmission device, and the data transmission stopping instruction end is used for stopping wireless data transmission when receiving a high level signal.
The utility model provides a switch board monitored control system's technological effect includes: each sensor is distributed processing, each sensor is provided with a microprocessor, the corresponding microprocessor processes data, then each microprocessor is connected with a signal input end of the main wireless data transmission device, the main wireless data transmission device wirelessly transmits the received detected data, the data processing of each sensor is mutually independent, even if one microprocessor fails, only the failed microprocessor can not output the corresponding data, other normal microprocessors can still normally output the detected data, the main wireless data transmission device can normally transmit the detected data, compared with the existing mode that the data detected by all the sensors can not be output as long as the main controller fails, the monitoring reliability is greatly improved, the control part is totally zero, and each microprocessor only needs to process the data detected by the corresponding sensor, the workload is light, the data processing efficiency is improved, and the service life of each microprocessor is prolonged.
Drawings
FIG. 1 is a schematic diagram of the structure of a first part of a monitoring system of a power distribution cabinet;
fig. 2 is a schematic diagram of the structure of the second part of the monitoring system of the power distribution cabinet.
Detailed Description
The embodiment provides a power distribution cabinet monitoring system which comprises a voltage monitoring device, a current monitoring device, a temperature monitoring device, a smoke monitoring device, a switch state monitoring device and a main wireless data transmission device. As a specific implementation manner, the voltage monitoring device, the current monitoring device, the temperature monitoring device, the smoke monitoring device, the switch state monitoring device and the main wireless data transmission device are all arranged in the power distribution cabinet.
As shown in fig. 1, the voltage monitoring device includes a voltage sensor and a first microprocessor. Wherein, voltage sensor is conventional voltage sensor, selects corresponding voltage sensor according to the specific type of the power line in the switch board, for example: if the power line is an ac circuit, the voltage sensor is an ac voltage sensor and is disposed at a set position in the corresponding power line. The first microprocessor is a conventional microprocessor chip, and the other microprocessors in this embodiment are also conventional microprocessor chips. The voltage sensor and the first microprocessor may be independently arranged, the signal output terminal of the voltage sensor is connected to the signal input terminal of the first microprocessor, for example, by a signal transmission line or by circuit board welding, or the voltage sensor and the first microprocessor may be integrally arranged to form an integrated module.
The current monitoring device includes a current sensor and a second microprocessor. Wherein, current sensor is conventional current sensor, selects corresponding current sensor according to the concrete type of the power line in the switch board, for example: and if the power line is an alternating current circuit, the current sensor is an alternating current sensor and is arranged at a set position in the corresponding power line. The current sensor and the second microprocessor may be independently arranged, the signal output terminal of the current sensor is connected to the signal input terminal of the second microprocessor, for example, by a signal transmission line or by circuit board welding, or the current sensor and the second microprocessor may be integrally arranged to form an integrated module.
The temperature monitoring device comprises a temperature sensor and a third microprocessor. The temperature sensor is a conventional temperature detection device, and is disposed at a position where temperature detection is required, such as a power line connection. The temperature sensor and the third microprocessor may be independently arranged, the signal output terminal of the temperature sensor is connected to the signal input terminal of the third microprocessor, for example, by a signal transmission line or by circuit board soldering, or the temperature sensor and the third microprocessor may be integrally arranged to form an integrated module.
The smoke monitoring device comprises a smoke sensor and a fourth microprocessor. Among them, the smoke sensor is a conventional smoke detection device, and is disposed at a place where smoke detection is required or a place where a fire is likely to occur, such as a power line connection. The smoke sensor and the fourth microprocessor can be arranged independently, the signal output end of the smoke sensor is connected with the signal input end of the fourth microprocessor, for example, the smoke sensor and the fourth microprocessor can be arranged in an integrated mode to form an integrated module.
The switch state monitoring device comprises a switch state detector and a fifth microprocessor. The switch state detector is used for detecting the switch state of a switch device in the power distribution cabinet, such as the switch state of a circuit breaker or a disconnecting switch in the power distribution cabinet. The switch state detector is a conventional detection device for detecting the switch state of the corresponding switch. The switch state detector and the fifth microprocessor may be independently arranged, and a signal output end of the switch state detector is connected with a signal input end of the fifth microprocessor, for example, by a signal transmission line or by circuit board welding, or the switch state detector and the fifth microprocessor may be integrally arranged to form an integrated module.
In this embodiment, a voltage monitoring device, a current monitoring device, a temperature monitoring device, a smoke monitoring device, a switch state monitoring device, and a main wireless data transmission device are taken as an example.
It should be understood that each microprocessor may only serve as a data forwarding function, or may only perform simple processing on the received detection signal, such as analog-to-digital conversion, data amplification, and the like.
The main wireless data transmission device is used for wirelessly transmitting the received detection data and can be a conventional wireless data transmission circuit. The signal output ends of the first microprocessor, the second microprocessor, the third microprocessor, the fourth microprocessor and the fifth microprocessor are connected with the signal input end of the main wireless data transmission device. It should be understood that the main wireless data transmission device may be provided with only one signal input end, and the signal output ends of the first microprocessor, the second microprocessor, the third microprocessor, the fourth microprocessor and the fifth microprocessor are all connected to the signal input end, so that the main wireless data transmission device may sequentially receive data information sent by each microprocessor in a serial transmission manner. Or, the main wireless data transmission device is provided with five signal input ends, and the signal output ends of the first microprocessor, the second microprocessor, the third microprocessor, the fourth microprocessor and the fifth microprocessor are respectively connected with the corresponding signal input ends, so that the main wireless data transmission device can receive data information sent by each microprocessor in a parallel transmission mode.
The voltage sensor detects voltage data, and the voltage data are output to the main wireless data transmission device after being processed by the first microprocessor; the current sensor detects current data, and the current data are output to the main wireless data transmission device after being processed by the second microprocessor; the temperature sensor detects temperature data, and the temperature data is output to the main wireless data transmission device after being processed by the third microprocessor; the smoke sensor detects smoke data, and the smoke data are output to the main wireless data transmission device after being processed by the fourth microprocessor; the switch state detector detects the switch state data of the switch device, and outputs the switch state data to the main wireless data transmission device after the relevant processing of the fifth microprocessor. The main wireless data transmission device wirelessly transmits the received data information sent by each microprocessor, such as to a background monitoring center or an intelligent mobile terminal.
In this embodiment, the power distribution cabinet monitoring system further includes a standby wireless data transmission device, a first selection switch S1, a second selection switch S2, a third selection switch S3, a fourth selection switch S4, and a fifth selection switch S5. The standby wireless data transmission device is the same device as the primary wireless data transmission device. The first selector switch S1, the second selector switch S2, the third selector switch S3, the fourth selector switch S4 and the fifth selector switch S5 are all conventional alternative selector switches, and each selector switch comprises a movable end, a first immovable end and a second immovable end, so that the movable end is communicated with the first immovable end, or the movable end is communicated with the second immovable end. Each selection switch can be a manual switch or an electric control switch.
The signal output end of the first microprocessor is connected with the movable end of a first selection switch S1, the first fixed end of the first selection switch S1 is connected with the signal input end of the main wireless data transmission device, and the second fixed end of the first selection switch S1 is connected with the signal input end of the standby wireless data transmission device. The signal output end of the second microprocessor is connected with the movable end of a second selection switch S2, the first fixed end of the second selection switch S2 is connected with the signal input end of the main wireless data transmission device, and the second fixed end of the second selection switch S2 is connected with the signal input end of the standby wireless data transmission device. The signal output end of the third microprocessor is connected with the movable end of a third selection switch S3, the first fixed end of the third selection switch S3 is connected with the signal input end of the main wireless data transmission device, and the second fixed end of the third selection switch S3 is connected with the signal input end of the standby wireless data transmission device. The signal output end of the fourth microprocessor is connected with the movable end of a fourth selection switch S4, the first fixed end of the fourth selection switch S4 is connected with the signal input end of the main wireless data transmission device, and the second fixed end of the fourth selection switch S4 is connected with the signal input end of the standby wireless data transmission device. The signal output end of the fifth microprocessor is connected with the movable end of a fifth selection switch S5, the first fixed end of the fifth selection switch S5 is connected with the signal input end of the main wireless data transmission device, and the second fixed end of the fifth selection switch S5 is connected with the signal input end of the standby wireless data transmission device.
Then, under normal conditions, the movable end and the first fixed end of each selector switch are communicated, the main wireless data transmission device is put into use, and the standby wireless data transmission device is in a standby state. When the main wireless data transmission device fails, each selector switch is operated, so that the movable end is communicated with the second immovable end, the standby wireless data transmission device is put into use, the main wireless data transmission device is withdrawn, data transmission is continued, and the reliability of data transmission is improved.
In this embodiment, the power distribution cabinet monitoring system further includes an identity recognizer, a human infrared sensor, a non-logic operation circuit, a first and logic operation circuit, and an alarm.
The identification device is a conventional identification device such as a fingerprint recognizer, an identification card reader or an employee card reader. The identity recognizer can be arranged in the power distribution cabinet and also can be arranged outside a cabinet door of the power distribution cabinet. When the identity recognition is passed, the identity recognizer outputs a high level signal; when the identity recognition is not passed or the identity recognizer is in an idle state, the identity recognizer outputs a low level signal. It should be understood that the identity recognizer is provided with a qualified identity library, and whether the identity passes the recognition is determined by comparing the input identity information with the identity library.
The human body infrared sensor can be conventional human body infrared detection equipment (such as 360-degree infrared camera), can be arranged outside a cabinet door of the power distribution cabinet, and can also be arranged outside the top of the power distribution cabinet. When a human body infrared signal is detected to be in a preset range around the power distribution cabinet, the human body infrared sensor outputs a high-level signal; when detecting that no human body infrared signal exists in the preset range around the power distribution cabinet, the human body infrared sensor outputs a low level signal. It should be understood that the detection range of the human body infrared sensor is different from the specific model of the human body infrared sensor.
The non-logic operation circuit is a conventional inverting logic operation circuit, that is, an input level signal is inverted, for example, a high level signal is converted into a low level signal.
The first and logic operation circuit is a conventional and logic operation circuit and has two signal input ends, the first and logic operation circuit outputs a high level signal only when high level signals are input to the two signal input ends, and the first and logic operation circuit outputs a low level signal as long as at least one signal input end inputs a low level signal.
As shown in fig. 2, the signal output end of the identity identifier is connected to the signal input end of the non-logical operation circuit, the signal output ends of the non-logical operation circuit and the human body infrared sensor are connected to the signal input end of the first and logical operation circuit, that is, the signal output end of the non-logical operation circuit is connected to the first signal input end of the first and logical operation circuit, and the signal output end of the human body infrared sensor is connected to the second signal input end of the first and logical operation circuit. The signal output end of the first and logic operation circuit is connected with an alarm which can be a buzzer or an audible and visual alarm, and the alarm is controlled by a high level signal, namely, the alarm gives an alarm when receiving the high level signal and stops when receiving a low level signal.
It should be understood that the human body infrared sensor, the non-logic operation circuit and the first and logic operation circuit are arranged in the power distribution cabinet, and the alarm is arranged in the power distribution cabinet or on the outer side of the top of the power distribution cabinet.
Then, the identity recognizer outputs a low level signal when in an idle state, and outputs a high level signal after passing through the non-logic operation circuit. When personnel are close to the power distribution cabinet, the human body infrared sensor outputs high level signals, the first and logic operation circuit outputs high level signals, the alarm gives an alarm, the personnel are warned to be away from the power distribution cabinet, and the safety of the power distribution cabinet is improved. If the staff is the staff, then the staff will carry out the identification through the identification ware, if the identification passes through, then the identification ware outputs high level signal, outputs low level signal after non-logic operation circuit, and first and logic operation circuit output low level signal, the alarm is shut down, prevents that the alarm is wrong to alert for the staff can normally overhaul or maintain the switch board.
In this embodiment, the power distribution cabinet monitoring system further includes a power distribution cabinet door state detector and a second and logic operation circuit.
Switch board cabinet door state detector is conventional detection device that is used for detecting the cabinet door state of switch board, for example: and the proximity switch is arranged at the position of the cabinet door. When the cabinet door is in an open state, the power distribution cabinet door state detector outputs a high level signal; when the cabinet door is in a closed state, the power distribution cabinet door state detector outputs a low level signal.
The second AND logic operation circuit is the same as the first AND logic operation circuit.
The signal output ends of the identity recognizer and the power distribution cabinet door state detector are connected with the signal input end of the second and logic operation circuit, namely the signal output end of the identity recognizer is connected with the first signal input end of the second and logic operation circuit, and the signal output end of the power distribution cabinet door state detector is connected with the second signal input end of the second and logic operation circuit.
The main wireless data transmission device is provided with a data transmission stopping instruction end, and the data transmission stopping instruction end has the following functions: the main wireless data transmission device stops wireless data transmission when the stop data transmission command terminal receives a high level signal, and accordingly, the main wireless data transmission device can perform wireless data transmission when the stop data transmission command terminal receives a low level signal. The signal output end of the second AND logic operation circuit is connected with the data transmission stopping instruction end of the main wireless data transmission device.
Then, when identity recognizer identity discernment passes through, and switch board cabinet door state detector detects the cabinet door and is in the open mode, it is carrying out normal overhaul and maintenance to the switch board to show the staff, then, this in-process does not carry out data wireless transmission, because the data that each sensor detected in the maintenance in-process probably are not normal data, if give backstage surveillance center, can cause the misjudgment of backstage surveillance center to the trouble, therefore, can promote the reliability of switch board control, moreover, can prolong main wireless data transmission device's life to a certain extent.
As a specific embodiment, the signal output terminal of the second and logic operation circuit may be further connected to a data transmission stop command terminal of the standby wireless data transmission device, so that the standby wireless data transmission device may be controlled according to the control logic.
It should be understood that the utility model discloses what protect is a switch board monitored control system's hardware architecture, is conventional processing means to the data processing process that wherein involves, the utility model discloses the switch board monitored control system's hardware architecture of protection does not receive its restraint.
Claims (4)
1. A power distribution cabinet monitoring system is characterized by comprising:
the voltage monitoring device comprises a voltage sensor and a first microprocessor, wherein the signal output end of the voltage sensor is connected with the signal input end of the first microprocessor;
the current monitoring device comprises a current sensor and a second microprocessor, wherein the signal output end of the current sensor is connected with the signal input end of the second microprocessor;
the temperature monitoring device comprises a temperature sensor and a third microprocessor, wherein the signal output end of the temperature sensor is connected with the signal input end of the third microprocessor;
the smoke monitoring device comprises a smoke sensor and a fourth microprocessor, wherein the signal output end of the smoke sensor is connected with the signal input end of the fourth microprocessor;
the switch state monitoring device comprises a switch state detector and a fifth microprocessor, wherein the signal output end of the switch state detector is connected with the signal input end of the fifth microprocessor; and
and the signal output ends of the first microprocessor, the second microprocessor, the third microprocessor, the fourth microprocessor and the fifth microprocessor are connected with the signal input end of the main wireless data transmission device, and the main wireless data transmission device is used for wirelessly transmitting each received detection data.
2. The power distribution cabinet monitoring system according to claim 1, further comprising a standby wireless data transmission device, a first selection switch, a second selection switch, a third selection switch, a fourth selection switch, and a fifth selection switch, wherein the first selection switch, the second selection switch, the third selection switch, the fourth selection switch, and the fifth selection switch each comprise a moving end, a first stationary end, and a second stationary end;
the signal output end of the first microprocessor is connected with the movable end of the first selection switch, the first immovable end of the first selection switch is connected with the signal input end of the main wireless data transmission device, and the second immovable end of the first selection switch is connected with the signal input end of the standby wireless data transmission device;
the signal output end of the second microprocessor is connected with the movable end of the second selection switch, the first immovable end of the second selection switch is connected with the signal input end of the main wireless data transmission device, and the second immovable end of the second selection switch is connected with the signal input end of the standby wireless data transmission device;
the signal output end of the third microprocessor is connected with the movable end of the third selector switch, the first immovable end of the third selector switch is connected with the signal input end of the main wireless data transmission device, and the second immovable end of the third selector switch is connected with the signal input end of the standby wireless data transmission device;
a signal output end of the fourth microprocessor is connected with a movable end of the fourth selection switch, a first fixed end of the fourth selection switch is connected with a signal input end of the main wireless data transmission device, and a second fixed end of the fourth selection switch is connected with a signal input end of the standby wireless data transmission device;
and the signal output end of the fifth microprocessor is connected with the movable end of the fifth selection switch, the first immovable end of the fifth selection switch is connected with the signal input end of the main wireless data transmission device, and the second immovable end of the fifth selection switch is connected with the signal input end of the standby wireless data transmission device.
3. The power distribution cabinet monitoring system according to claim 1, further comprising an identity recognizer, a human body infrared sensor, a non-logic operation circuit, a first and logic operation circuit and an alarm;
the identity recognizer is used for outputting a high level signal when identity recognition passes and outputting a low level signal when the identity recognition does not pass or the identity recognizer is in an idle state;
the human body infrared sensor is used for outputting a high level signal when detecting that human body infrared signals exist in a preset range around the power distribution cabinet, and outputting a low level signal when detecting that no human body infrared signals exist in the preset range around the power distribution cabinet;
the signal output end of the identity recognizer is connected with the signal input end of the non-logic operation circuit, the signal output ends of the non-logic operation circuit and the human body infrared sensor are connected with the signal input end of the first and logic operation circuit, the signal output end of the first and logic operation circuit is connected with the alarm, and the alarm is controlled by a high level signal.
4. The power distribution cabinet monitoring system according to claim 3, further comprising a power distribution cabinet door state detector and a second AND logic operation circuit, wherein the power distribution cabinet door state detector is configured to output a high level signal when the cabinet door is in an open state, and output a low level signal when the cabinet door is in a closed state;
the signal output ends of the identity recognizer and the power distribution cabinet door state detector are connected with the signal input end of the second and logic operation circuit, the signal output end of the second and logic operation circuit is connected with the data transmission stopping instruction end of the main wireless data transmission device, and the data transmission stopping instruction end is used for stopping wireless data transmission when receiving a high level signal.
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| CN202121326616.XU CN214626514U (en) | 2021-06-15 | 2021-06-15 | Power distribution cabinet monitoring system |
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| CN202121326616.XU CN214626514U (en) | 2021-06-15 | 2021-06-15 | Power distribution cabinet monitoring system |
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