Two-ticket system based on digital circuit

Abstract

The utility model relates to a two-ticket system based on a digital circuit, which comprises a plurality of independent and parallel switch groups, the started switch groups are related to the number of items in a work ticket, each switch group comprises a first switch module and a second switch module, the output of the first switch module and the output of the second switch module are connected by a first logic module, and the output of the second switch module is connected by a second logic module. And after the output of the first logic module, the output of each started switch group is connected with the input of the second AND logic module, and the output of the second AND logic module is used as the total output. According to the method and the device, errors of missing recording and missing recording during recording and marking of operation terms are solved, management is easier during operation ticket execution, and the method and the device have the characteristics of high safety and strong prompting performance.

Description

Technical Field

[0001] The present invention relates to the technical field of digital electronic circuits, and in particular to a two-ticket system based on digital circuits. Background Art

[0002] Two-article management and two-ticket management are implemented in power station maintenance in order to strictly implement the "Electric Power Safety Work Regulations". Combined with the problems existing in the implementation of work tickets at this station, this regulation is specially formulated to achieve further standardization, unification and standardization, and to improve the quality and pass rate of work tickets and switching operation tickets.

[0003] At present, there are still many power station maintenance offices that use two management methods, which are implemented through paper work tickets and operation tickets. When setting maintenance projects, the department that prepares the work ticket needs to record each maintenance detail on the work ticket, and each maintenance detail will also be recorded on the operation ticket. When the executor completes each project, he needs to mark the corresponding number. When the maintenance projects are numerous or complex, the executor may miss or make mistakes, which may pose a hidden danger to the maintenance of the power station or the safety of electricity use. Summary of the Invention

[0004] The present invention proposes a two-ticket system based on digital circuits, which solves the problems of omission and cross-recording when recording and marking operation terms. The application of this application makes it easier to manage when executing operation tickets, and has the characteristics of high security and strong promptness.

[0005] The technical solutions of the present invention are as follows:

[0006] A two-ticket system based on digital circuits includes multiple independent and parallel switch groups. The enabled switch groups are related to the number of items in the work ticket. Each switch group includes a first switch module and a second switch module. The outputs of the first switch module and the second switch module are connected by a first logic module. After the output of the first logic module, the output of each enabled switch group is connected to the input of the second AND logic module, and the output of the second AND logic module is used as the total output.

[0007] As a further optimization of this solution, the switch group includes a resistor R1 and a diode D1. The front end of the first switch module is connected to a first voltage source, the front end of the second switch module is connected to the first voltage source through the resistor R1, the output end of the first switch module is connected to the output end of the second switch module through the diode D1, and the diode D1 points from the first switch module to the second switch module.

[0008] As a further optimization of this solution, the second AND logic module includes multiple parallel diodes and a second voltage source, the number of diodes in the second AND logic module matches the number of switch groups, the voltage value of the second voltage source is lower than the first voltage source, the anode of the diode in the second AND logic module is connected to the second voltage source, and the cathode of each diode in the second AND logic module is connected to the output of the corresponding switch group.

[0009] As a further optimization of this solution, the rear stage of the two-ticket system is connected to a prompt unit.

[0010] As a further optimization of this solution, the first switch module is connected to a light emitting diode LED1 at the rear stage, and the anode of the light emitting diode LED1 is connected to the first switch module.

[0011] As a further optimization of this solution, the second switch module includes a single-pole double-throw switch, the switch side of the single-pole double-throw switch serves as the V2 end of the second switch module, the first contact on the contact side of the single-pole double-throw switch is connected to the first voltage source, and the second contact on the contact side of the single-pole double-throw switch is connected to the power ground.

[0012] As a further optimization of this solution, the second switch module includes a transistor Q1 and a transistor Q2, the transistor Q1 is an npn-type transistor, the transistor Q2 is a pnp-type transistor, the bases of the transistor Q1 and the transistor Q2 are connected in parallel to an external control signal, the collector of the transistor Q1 is connected to a first voltage source, the emitter of the transistor Q1 is connected to the V2 end of the second switch module, the emitter of the transistor Q2 is connected to the V2 end of the second switch module, and the collector of the transistor Q2 is connected to the power supply ground.

[0013] The working principle and beneficial effects of the present invention are:

[0014] In this system, each switch group corresponds to a maintenance item, and the first switch module corresponds to the item set in the work ticket. First, confirm the number of maintenance items in the work ticket, and start the number of switch groups corresponding to the number of items in sequence according to the number of items. The starting method is to open the first switch module. Generally, the first switch module is a normal manual switch, and the on and off of the switch module can also be controlled by electronic control. After opening the corresponding number of first switch modules, the corresponding device of the system is delivered to the maintenance operator. Whenever the maintenance of a task is completed, the corresponding second switch module is pressed. The second switch module is executed by the operator. Corresponding to each operation item, the cathode of the diode D1 is grounded before the second switch module is pressed, and the first voltage source is in an open circuit state after passing through the resistor. After the second trigger module is triggered, the cathode of the diode D1 is connected to the first voltage source.

[0015] By applying this application, when performing maintenance operations, engineers can enable the system's switch group according to the work ticket. Through the first switch module, it can be flexibly set. When executing the operation ticket, each time the corresponding second switch module is pressed after completing an item, the system will give certain prompts when it is pressed or not. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a system block diagram of this application;

[0018] Figure 2 This is the logic circuit schematic diagram of this application;

[0019] Figure 3 This is a circuit diagram of the first switch module in this application;

[0020] Figure 4 This is a first circuit schematic diagram of the second switch module in this application;

[0021] Figure 5 This is a second circuit schematic diagram of the second switch module in this application. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0023] As the instruction manual Figure 1 and 2 As shown, a two-ticket system based on digital circuits includes multiple independent and parallel switch groups. The enabled switch groups are related to the number of items in the work ticket. Each switch group includes a first switch module and a second switch module. The outputs of the first switch module and the second switch module are connected by a first logic module. After the output of the first logic module, the output of each enabled switch group is connected to the input of the second AND logic module, and the output of the second AND logic module is used as the total output.

[0024] When the engineer arranges the work ticket, he activates the first switch module according to the number of items in the work ticket. When the first switch module is activated, the prompt device of the first switch module will give a sound or light prompt, usually a light, indicating that the switch group is activated. When the operator performs maintenance in sequence, each time a task is completed, the second switch module is activated. When the state of the second switch module changes, the prompt after the first switch module will change.

[0025] As the instruction manual Figure 2 As shown, the switch group includes a resistor R1 and a diode D1, the front end of the first switch module is connected to a first voltage source, the front end of the second switch module is connected to the first voltage source through the resistor R1, the output end of the first switch module is connected to the output end of the second switch module through the diode D1, and the diode D1 points from the first switch module to the second switch module.

[0026] Before starting the first switch module, the first switch module is open circuit and the second switch module is grounded. When the first switch module is turned on, the first switch module is connected, the anode of the diode D1 is at a high potential, and the cathode of the diode D1 is grounded at the same time. At this time, the input of the second AND logic module is grounded. At this time, one input of the second AND drain module is 0, indicating that the project is not completed. For the switch group that is not enabled, it is necessary to use a switch to disconnect the switch group from the second AND logic module. Ordinary switches or switch tubes can be used to achieve the disconnection. When completing an item in the maintenance execution operation ticket, the corresponding second switch module is triggered, and the second switch module is connected to the first voltage source. At this time, the input of the second AND logic module is high potential. When the output of all switch groups is high potential, the second AND logic module outputs a high potential. When the second AND logic module outputs a low potential, it indicates that there is an unfinished project in the operation ticket.

[0027] As the instruction manual Figure 2 As shown, the second AND logic module includes multiple parallel diodes and a second voltage source. The number of diodes in the second AND logic module matches the number of switch groups. The voltage of the second voltage source is lower than that of the first voltage source. The anodes of the diodes in the second AND logic module are connected to the second voltage source, and the cathode of each diode in the second AND logic module is connected to the output of the corresponding switch group. The subsequent stage of the two-ticket system is connected to a prompt unit. This second AND logic unit is implemented using multiple parallel diodes.

[0028] As the instruction manual Figure 2 As shown, the first switch module is connected to a light-emitting diode (LED1) at the rear stage, with the anode of the LED connected to the first switch module. When the first switch module is not activated, the anode of the LED is open, and no current flows through the LED. When the LED is activated, diode D1 is grounded, forming a path between the first voltage source and the power ground after passing through the LED, causing the LED to emit light, thus providing a prompt. When the second switch module is connected to the first voltage source, the cathode of diode D1 rises to a high potential, turning off the LED.

[0029] As the instruction manual Figure 4As shown, the second switch module includes a single-pole double-throw switch. The switch side of the single-pole double-throw switch serves as the V2 end of the second switch module. The first contact on the contact side of the single-pole double-throw switch is connected to the first voltage source, and the second contact on the contact side of the single-pole double-throw switch is connected to the power ground.

[0030] As the instruction manual Figure 5 As shown, the second switch module includes a transistor Q1 and a transistor Q2, the transistor Q1 is an npn-type transistor, the transistor Q2 is a pnp-type transistor, the bases of the transistor Q1 and the transistor Q2 are connected in parallel to an external control signal, the collector of the transistor Q1 is connected to a first voltage source, the emitter of the transistor Q1 is connected to the V2 end of the second switch module, the emitter of the transistor Q2 is connected to the V2 end of the second switch module, and the collector of the transistor Q2 is connected to the power ground.

[0031] The second switch module is electronically triggered, with an external trigger module. When the input Von is high, transistor Q1 conducts, connecting the voltage of the first voltage source through transistor Q1 and V2 to a high voltage. At this point, Q2 is disconnected, isolating V2 from the power supply ground. When Von is low, transistor Q1 disconnects the first voltage source and V2, while transistor Q2 conducts, grounding V2.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A two-ticket system based on digital circuits, characterized in that: It includes multiple independent and parallel switch groups. The enabled switch groups are related to the number of items in the work ticket. Each switch group includes a first switch module and a second switch module. The outputs of the first switch module and the second switch module are connected by a first logic module. After the output of the first logic module, the output of each enabled switch group is connected to the input of the second AND logic module, and the output of the second AND logic module is used as the total output.

2. A two-ticket system based on digital circuits according to claim 1, characterized in that: The switch group includes a resistor R1 and a diode D1. The front end of the first switch module is connected to a first voltage source, and the front end of the second switch module is connected to the first voltage source through the resistor R1. The output end of the first switch module is connected to the output end of the second switch module through the diode D1. The diode D1 points from the first switch module to the second switch module.

3. A two-ticket system based on digital circuits according to claim 2, characterized in that: The second AND logic module includes multiple parallel diodes and a second voltage source. The number of diodes in the second AND logic module matches the number of switch groups. The voltage value of the second voltage source is lower than that of the first voltage source. The anodes of the diodes in the second AND logic module are connected to the second voltage source, and the cathode of each diode in the second AND logic module is connected to the output of the corresponding switch group.

4. A two-ticket system based on digital circuits according to claim 2, characterized in that: The rear stage of the two-ticket system is connected to a prompt unit.

5. A two-ticket system based on digital circuits according to claim 1, characterized in that: The first switch module is connected to a light emitting diode LED1 at the rear stage, and the anode of the light emitting diode LED1 is connected to the first switch module.

6. A two-ticket system based on digital circuits according to claim 2, characterized in that: The second switch module includes a single-pole double-throw switch. The switch side of the single-pole double-throw switch serves as the V2 end of the second switch module. The first contact on the contact side of the single-pole double-throw switch is connected to a first voltage source, and the second contact on the contact side of the single-pole double-throw switch is connected to a power ground.

7. A two-ticket system based on digital circuits according to claim 2, characterized in that: The second switch module includes a transistor Q1 and a transistor Q2, the transistor Q1 is an npn-type transistor, the transistor Q2 is a pnp-type transistor, the bases of the transistor Q1 and the transistor Q2 are connected in parallel to an external control signal, the collector of the transistor Q1 is connected to a first voltage source, the emitter of the transistor Q1 is connected to the V2 end of the second switch module, the emitter of the transistor Q2 is connected to the V2 end of the second switch module, and the collector of the transistor Q2 is connected to the power ground.

Images