CN203193177U - Digital switch state comprehensive indicator - Google Patents

Abstract

The utility model discloses a digital type on-off state comprehensive indicator, comprising a communication interface circuit, a display circuit, a human body induction sensor, an on-off input circuit, a microprocessor, an analog input circuit, a keyboard circuit, an on-off output circuit, and a power circuit. The display circuit is an LCD display screen. A high-tension switch cabinet primary loop simulated diagram, on-off state breaker positions, earthing switch blade positions, spring energy storage status, high-voltage live indications, high-voltage live locking, automatic heating dehumidifying control, and temperature control heater fault indication are dynamically displayed on the LCD display screen. The digital type on-off state comprehensive indicator is provided with the human body induction sensor, and service life of the LCD display screen is prolonged. The dynamic indicator is suitable for a centrally installed switchgear, a handcart cabinet, a fixation cabinet, a ring main unit, and other various switch cabinets.

Description

Digital switch state comprehensive indicator

technical field

The utility model relates to a dynamic display device for the operating state of a switch, which mainly dynamically displays a simulation diagram of the operating state of a high-voltage switch cabinet. the

Background technique

Due to its simplicity and reliability, the outdoor ring network cabinet has been widely used in the distribution network power supply network of the city. The high-voltage switchgear is an electrical cabinet equipment used in the power system. The function of the high-voltage switchgear is to generate power, transmit power, and distribute power in the power system. It is an important device for opening and closing, control and protection in the process of power conversion and power conversion. The components in the high-voltage switchgear mainly include high-voltage circuit breakers, high-voltage isolating switches, high-voltage load switches, and high-voltage operating mechanisms. The operating status of each component in the cabinet is currently used in the static primary circuit simulation diagram to display the operating status of the switch with light-emitting tubes, including live display, circuit breaker opening and closing status indication, energy storage, grounding switch indication and trolley position indication, etc., for intuitive Dynamically display the switch status, using a large LCD screen as a dynamic simulation diagram of the primary circuit to display the switch operating status, not only including live display, circuit breaker opening and closing status indication, energy storage, grounding switch indication and trolley position indication, but also automatic heating The dehumidification device and the digital display of temperature and humidity also have RS485 communication interfaces, etc. The dynamic display instrument disclosed by the utility model is suitable for various switch cabinets such as central cabinets, handcart cabinets, fixed cabinets, and ring network cabinets. the

Utility model content

The technical problem to be solved by the utility model is to provide a display device that uses an LCD display screen as a dynamic simulation diagram of a primary circuit, and then displays the electrification of the high-voltage switchgear, and also has automatic heating and dehumidification devices, circuit breaker opening and closing status indication, Energy storage, grounding switch indication, trolley position indication, RS485 communication interface and human body induction control and other functions. the

In order to solve the above technical problems, the utility model provides a digital switch state comprehensive indicator, including a communication interface circuit, a display circuit, a human body induction sensor, a switch input circuit, a microprocessor, an analog input circuit, a keyboard circuit, The switch value output circuit and the power supply circuit; the input end of the communication interface circuit is connected with the communication interface of the microprocessor; the input end of the display circuit is connected with the I/O port of the microprocessor; the input end of the human body induction sensor is connected with the microprocessor's I/O connection; the switching value input circuit, the keyboard circuit and the switching value output circuit are respectively connected with the microprocessor I/O; the input terminal of the analog quantity input circuit is connected with the A/D port of the microprocessor; the output terminal of the power circuit is connected with the microprocessor A/D port. Microprocessor power terminal connection. the

The display circuit is an LCD display, which can dynamically display the simulation diagram of the primary circuit of the high-voltage switchgear, the position of the switch state circuit breaker, the position of the grounding switch, the state of spring energy storage, the high-voltage live indication, the high-voltage live lock and automatic heating Dehumidification control, temperature control heater fault indication. the

The input signal of the switching value input circuit is a switching value signal, and the signals of the opening and closing state, grounding, energy storage, disconnection, work and test state of the circuit breaker are sent to the microprocessor for judgment, and the corresponding work is dynamically displayed on the display circuit State diagram. the

The analog quantity input circuit is a voltage signal or a current signal, and the analog quantity mainly includes a temperature signal and a humidity signal. the

The output signal of the switch output circuit is a switch value, which controls the lighting lamp, the heater and the fan. the

The communication interface circuit is RS485 communication interface. the

The human body induction sensor is a pyroelectric human body induction sensor. When a person leaves the LCD display, the color screen is turned off, and when a person walks into the LCD display, the LCD display is turned on to prolong the service life of the LCD display. the

The utility model has positive effects: (1) The digital switch state comprehensive indicator of the utility model adopts LCD dynamic indication, which is more intuitive as the primary circuit simulation diagram of the switch cabinet. (2) The digital switch state comprehensive indicator of the utility model also has electrification display, automatic heating and dehumidification, circuit breaker opening and closing state indication, energy storage, grounding switch indication, trolley position indication, temperature and humidity digital display, and RS485 Communication interface and other functions, the dynamic display is suitable for various switch cabinets such as central cabinets, handcart cabinets, fixed cabinets, and ring network cabinets. (3) The digital switch state comprehensive indicator of the present utility model adopts pyroelectric human body induction sensor. When a person leaves the LCD display screen, the LCD display screen is closed. Extended LCD display life. the

Description of drawings

Fig. 1 is a schematic structure diagram of the digital switch state comprehensive indicator of embodiment 1. the

Detailed ways

As shown in Figure 1, the digital switch state comprehensive indicator of this embodiment includes a communication interface circuit 1, a display circuit 2, a human body induction sensor 3, a switch input circuit 4, a microprocessor 5, an analog input circuit 6, Keyboard circuit 7, switching value output circuit 8 and power supply circuit 9; the input end of communication interface circuit 1 is connected with the communication interface of microprocessor 5; the input end of display circuit 2 is connected with the I/O port of microprocessor 5; The input terminal of the inductive sensor 3 is connected with the I/O of the microprocessor 5; the switching value input circuit 4, the keyboard circuit 7 and the switching value output circuit 8 are respectively connected with the microprocessor 5 I/O; the input terminal of the analog quantity input circuit 6 It is connected with the A/D port of the microprocessor 5; the output terminal of the power supply circuit 9 is connected with the power supply terminal of the microprocessor 5. the

The display circuit 2 is an LCD display, which can dynamically display the primary circuit simulation diagram of the high-voltage switchgear, the position of the switch state circuit breaker, the position of the grounding switch, the state of spring energy storage, the high-voltage live indication, the high-voltage live lock and the automatic Heating dehumidification control, temperature control heater failure indication. the

The input signal of the switching value input circuit 4 is a switching value signal, and the signals of the opening and closing state, grounding, energy storage, disconnection, working and test state of the circuit breaker are sent to the microprocessor 5 for judgment, and are dynamically displayed on the display circuit 2 The corresponding working status diagram. the

The analog quantity input circuit 6 is for voltage signal or current signal input, and the analog quantity mainly includes temperature signal and humidity signal. the

The output signal of the switch output circuit 8 is a switch value, which controls the lighting lamp, the heater and the fan. the

The communication interface circuit 1 is an RS485 communication interface. the

The human body induction sensor 3 is a pyroelectric human body induction sensor, and when people leave the LCD display screen, the color screen is turned off, and when the person walks into the LCD display screen, the LCD display screen is opened to prolong the life of the LCD display screen. the

The technical solution of the utility model has been described above in conjunction with the embodiment, but the above-mentioned embodiment can not be understood as the limitation to the technical solution of the utility model, such as the size of the liquid crystal screen and other models can be adjusted according to the specific display content. The spiritual essence of the utility model adopts liquid crystal screen to carry out any equivalent transformation that the dynamic and static indication of the switchgear simulation diagram is done, all should be within the scope of protection of the utility model. the

Claims (7)

1. The digital switch state comprehensive indicator is characterized in that it comprises a communication interface circuit (1), a display circuit (2), a human body induction sensor (3), a switching value input circuit (4), a microprocessor (5), Analog input circuit (6), keyboard circuit (7), switch output circuit (8) and power supply circuit (9); the input end of communication interface circuit (1) is connected with the communication interface of microprocessor (5); display The input end of the circuit (2) is connected to the I/O port of the microprocessor (5); the input end of the human body induction sensor (3) is connected to the I/O port of the microprocessor (5); the switching value input circuit (4) , the keyboard circuit (7) and the switching value output circuit (8) are respectively connected with the microprocessor (5) I/O; the input end of the analog quantity input circuit (6) is connected with the microprocessor (5) A/D port; The output terminal of the power supply circuit (9) is connected with the power supply terminal of the microprocessor (5). the 2. The digital switch state comprehensive indicator as claimed in claim 1, wherein the display circuit (2) is an LCD display, on which the high-voltage switchgear primary circuit simulation diagram and switch state can be dynamically displayed. Circuit breaker position, grounding switch position, spring energy storage status, high voltage live indication, high voltage live lock, automatic heating and dehumidification control, temperature control heater failure indication. the 3. The digital switch state comprehensive indicator as claimed in claim 1, characterized in that, the input signal of the switch input circuit (4) is a switch signal, which is used for circuit breaker opening and closing, grounding, energy storage, and disconnection. , work and test state signals are sent to the microprocessor (5) for judgment, and the corresponding work state chart is dynamically displayed on the display circuit (2). the 4. The digital switch state comprehensive indicator as claimed in claim 1, wherein the analog input circuit (6) is a voltage signal or current signal input, and the analog mainly includes a temperature signal and a humidity signal. the 5. digital switch state comprehensive indicator as claimed in claim 1, is characterized in that, the output signal of switch output circuit (8) is switch value, and illuminating lamp, heater and fan are controlled. the 6. The digital switch state comprehensive indicator as claimed in claim 1, characterized in that the communication interface circuit (1) is an RS485 communication interface. the 7. The digital switch state comprehensive indicator as claimed in claim 1, characterized in that the human body induction sensor (3) is a pyroelectric human body induction sensor, when the person leaves the LCD display screen, the color screen is turned off, and when the person walks into the LCD screen, the color screen is turned off. When the display is on, turn on the LCD display to prolong the life of the LCD display. the

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