CN107592187B

CN107592187B - Voting method based on dual-channel voting system

Info

Publication number: CN107592187B
Application number: CN201710853784.6A
Authority: CN
Inventors: 彭程; 史志明; 官磊; 李国勇; 唐小平; 黎发明
Original assignee: Chengdu Zhongke Information Technology Co Ltd
Current assignee: Chengdu Zhongke Information Technology Co Ltd
Priority date: 2017-09-20
Filing date: 2017-09-20
Publication date: 2020-03-20
Anticipated expiration: 2037-09-20
Also published as: CN107592187A

Abstract

The invention discloses a voting method based on a dual-channel voting system, wherein when voting is started, a master control A sends a voting starting command to a master control B; A. b, the main control sends voting commands to corresponding channels of the dual-channel controller respectively, and enters a voting state, and the dual-channel controller collects key information and sends the key information to the main control computer respectively; A. b, the main control unit receives the voting data sent by the respective channels and forwards the voting data to the opposite side; A. b, the main control respectively processes, combines, counts and displays the voting data of the two channels; when voting is terminated, A sends a termination voting command to the B master, then A, B masters send termination voting commands to the corresponding channels of the dual-channel controllers respectively, and the voting is terminated. The invention forms two real-time online complete voting links which are mutually backed up, realizes region isolation on the premise of self-organizing system, can defend common network attacks, and enhances the robustness and stability of the whole network system.

Description

Voting method based on dual-channel voting system

Technical Field

The invention relates to a voting method based on a dual-channel voting system.

Background

The conference voting mode goes through the evolution from applause, holding hands to the use of electronic voting systems.

The electronic voting system usually has the expression that a nameless voter is arranged in front of each representative surface, three keys of 'approval, disapproval and abandon' are arranged on the representative surface, after the representative surface presses the keys, data of each electronic voter in the meeting place is collected and forwarded to a main control computer through a voting controller, and after the main control computer counts results, the voting results are displayed on an electronic screen in the meeting place.

In general, the voting system is basically constructed in the form of a voter, a voting controller and a master computer. The voting devices in the meeting place are connected in a hand-in-hand mode and then are connected to a voting controller through a special communication cable, and the voting controller carries out control operations such as system configuration, command sending, voting information acquisition and the like on N voting devices on the link; meanwhile, when the number of voters reaches a certain scale, a plurality of controllers must be used to control a plurality of voter links, respectively. The M controllers control the M multiplied by N voters, and the M controllers are converged to a serial convergence device or an Ethernet switch through a serial connection cable or an Ethernet connection cable and finally communicated with a voting master control computer. The main functions of the voting main control program running on the voting main control computer are to configure the whole voting system, send voting commands, collect voter key information, display voting results of the voting scheme, and the like.

The structure of a conventional electronic voting system is not complex, but the electronic voting system is different from other systems used in daily life in that the application occasions of the electronic voting system are usually in a serious and serious conference process, if the system fails in the voting process, normal operation of the conference is affected, and even participants can generate distrust on the voting result of the conference, so that relatively bad administrative influence is caused. Therefore, the electronic voting system is required to operate efficiently and accurately, and the requirements on the stability and reliability of the system are also extremely high.

Therefore, it is very important to improve the overall reliability of the electronic voting system. At present, a general electronic voting system carries out related work from four aspects such as a main control computer, a voting controller, a voter and a connecting cable thereof, and a typical mode and the defects thereof are as follows:

firstly, a 'ring hand-in-hand' connection mode is adopted on the voter connection mode. The meters of each link are connected in a hand-pulling mode, and when a single point of failure (such as a cable breakage or a failure of one seat voter) occurs in the link, the connection of the subsequent voter of the whole link is interrupted. In order to deal with the fault conditions, a voter can be connected in a 'ring hand-in-hand' connection mode, namely, a connecting cable is led out from the end voter of each link to be connected with a voting controller, so that the links form a ring. The annular connection mode can avoid the overall system fault caused by single-point fault to a certain extent, but the overall system fault cannot be avoided when a plurality of voters or controllers of the system are in fault.

The other is a cold standby or hot standby mode. It is also a common emergency plan, that is, adding a backup controller to each link. The backup controller can adopt a cold standby mode or a hot standby mode. If the cold standby mode is adopted: when one controller fails, the corresponding cold controller is temporarily started. When a fault occurs, the emergency response operation is complicated, the consumed time is long, and the fault is easy to occur. On the basis, an approach for reducing the emergency processing time is to change the controller backup mode into a hot standby mode. The method is characterized in that a standby controller is connected into the system by using a customized distributor and a switcher, the currently used controller is selected by the switcher, and when a fault occurs, the currently used controller of the system is switched to the standby controller by the switcher. This approach can save processing time and steps in fault response to some extent, but introduces two key node devices, namely a distributor and a switcher, which are also global faults when the distributor and the switcher fail. Meanwhile, the two modes can not solve the overall system fault caused by the fault of the main control computer.

Thirdly, a standby main control computer is added, and double-computer switching equipment is adopted for fault switching. Under the structure, when the main control computer fails, the system can be switched to the standby main control computer by using the double-computer switching equipment to continue subsequent operation. The scheme can solve the problem of system failure caused by the failure of the main control computer, but has the defects that manual operation is needed for switching, failure points are increased, and double-computer switching equipment is easy to become a weak link of a system.

And fourthly, adding another voting system as a standby system, wherein the newly added standby voting system can adopt different implementation modes with the main system. For example, a voting function is realized by designing special voter software on a multimedia terminal with a touch screen function, the multimedia terminal deployment and the traditional key-type voter are both deployed on the participant desktops, different functions are respectively completed by two sets of systems at ordinary times, information such as conference files, protocol names and the like can be displayed on the multimedia terminal, and the traditional key-type voter completes the protocol voting function. When the traditional button-pressing voter fails and cannot be used, the multimedia terminal can control the computer to send instructions, so that the multimedia terminal in the meeting place enters a voting program, the voting program simulates three buttons of 'approval', 'objection' and 'abstain' on the touch screen, and participants express wishes to carry out protocol voting by clicking the buttons on the touch screen. Thereby realizing the continuous conference. The main voting system can solve the problem that the conference cannot be continuously guaranteed to be carried out when any fault occurs in the main voting system, but two problems exist in the actual operation process, one is that after the standby system is started, participants need to be switched to the virtual key of the touch screen to carry out the proposal table decision, but not to be carried out on the physical key under the normal condition, so that a conference host needs to specially explain the situation in the conference process, and if the main voting system has a fault in the proposal voting process, the voted proposal also needs to be voted again, so that special explanation is needed. In a word, the special description of the host can greatly influence the normal flow of the conference, and great difficulty is brought to conference organization work; on the other hand, the switching of the system level is also operated by an operator, the possibility of human errors exists in a field stress state, and participants are easy to fail in voting, for example, voting is not performed on a virtual key, but the participants still perform voting on a master voter.

Disclosure of Invention

In order to overcome the above disadvantages of the prior art, the present invention provides a voting method based on a two-channel voting system.

The technical scheme adopted by the invention for solving the technical problems is as follows: a voting method based on a dual-channel voting system comprises the following steps:

step one, when voting is started, the A channel main control computer sends a voting starting command to the B channel main control computer;

step two, the channel A main control computer and the channel B main control computer respectively send voting commands to corresponding channels of the dual-channel controller, enter a voting state, and carry out key voting on participating representatives;

step three, the A, B channels of the dual-channel controller collect the key information respectively and send the key information to the A channel main control computer and the B channel main control computer respectively;

step four, the A channel main control computer and the B channel main control computer receive the block data sent by the respective channels and simultaneously forward the block data to the other side;

step five, the channel A main control computer and the channel B main control computer respectively process voting data of the two channels, then combine the data of the two channels, replace invalid key values with valid key values, and finally count and display the combined data;

and step six, when voting is stopped, the channel A main control computer sends a voting stopping command to the channel B main control computer, then the channel A main control computer and the channel B main control computer respectively send voting stopping commands to corresponding channels of the dual-channel controller, and voting is finished.

Compared with the prior art, the invention has the following positive effects:

1. compared with the traditional 'annular hand-in-hand' connection mode, the system eliminates the single-point fault of the voter unit.

Although the whole system fault caused by single point fault can be avoided to a certain extent after a voter in the connection mode of 'annular hand pulling' is in fault, the integrity of the system is still damaged, and the system lacks a voter. The system adopts the two-channel voter, namely two voters work in parallel at the same position, when one voter goes wrong, the other voter is not influenced and can still work normally, and the integrity of the system is not influenced.

2. Compared with the traditional cold controller mode, the cold standby computer mode and the like, the system reduces system switching operation when a fault occurs, and avoids human errors.

For critical core devices in the system, for example: the controller and the main control computer perform cold standby, and although the core devices can be switched to the cold standby devices manually when the core devices are in failure, on one hand, the process takes longer time, so that the normal process of the conference is affected, and even the situation that participants are required to vote the same proposal again occurs, and the conference effect is very poor; on the other hand, when the situation is handled on the spot, the pressure of workers is very large, and the situation of misoperation can possibly occur, so that the emergency treatment is failed, and the system fault cannot be solved in time. The key core devices of the system all work in parallel at the same time, and switching operation is not needed when a fault occurs. The normal flow of the conference is not influenced, the participants cannot perceive the occurrence of the fault, the key operations made by the participants are received by the system, and the condition that the participants need to vote the same protocol again cannot occur.

3. Compared with the traditional hot standby controller and hot standby main control computer modes, the system has no newly added hardware equipment fault point, and the control logic of system software is simpler.

The traditional hot standby controller and hot standby main control computer modes both need to introduce switching equipment into the system so as to be capable of switching to standby equipment when the core main equipment fails, the newly introduced switching equipment actually introduces a new failure point into the system, and the stability and reliability of the newly introduced switching equipment have great influence on the overall stability and reliability of the system; meanwhile, due to the existence of a main data source and a standby data source or data processing equipment, the system needs to design a data and control synchronization mechanism with very complex logic, so that the complexity of a software system is overhigh, and the overall stability and reliability are low.

4. Compared with the traditional scheme that another voting system is added to serve as a standby system to form mutually independent main and standby systems, the scheme can better integrate two independent voting systems, when a fault occurs on a single channel, system switching is not needed, the key voting mode of a participant is not changed, the error condition which possibly occurs in operation and use when the system is switched is avoided, the participant can not sense the fault, the conference flow is not needed to be changed, and the smoothness of a conference program can be guaranteed.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a system architecture diagram of the present invention;

FIG. 2 is a schematic diagram of a two-channel voter.

Detailed Description

A voting system based on double cores and double links adopts the structural design of full-system double-link real-time hot standby. As shown in fig. 1, the system comprises an A, B channel master computer, a A, B channel aggregation switch and at least one dual-channel controller, wherein the dual-channel controller is connected with a plurality of dual-channel voters connected by hands; the A channel main control computer, the A channel convergence switch, the A channel of the dual-channel controller and the A channels of the dual-channel voters connected by a plurality of hand-pulled hands are sequentially connected to form a voting link A; and the B channel main control computer, the B channel convergence switch, the B channel of the dual-channel controller and the B channels of the dual-channel voters connected by a plurality of hand-in-hand units are sequentially connected to form a voting link B independent of the voting link A.

And the A channel aggregation switch and the B channel aggregation switch are both connected with the core switch. The core switch is connected with the C network switch. And the C network switch is respectively connected with the main meeting management workstation, the standby meeting management workstation, the main database server, the standby database server, the main network printer and the standby network printer.

The two-channel voter hand-in-hand connection means that: the A-channel of the two-channel controller provides four parallel output ports, each of which can be connected to 128 voters. And voting cables are led out from each port through a special eight-core connector and are connected with an A channel inlet line of a first two-channel voter through a special aviation connector, an outlet line of an A channel of the first voter is connected with an A channel inlet line of a second two-channel voter, and the like until an A channel outlet line of a penultimate two-channel voter is connected with an A channel inlet line of a last two-channel voter. Therefore, the A channel voter realizes hand-in-hand connection. The same hand-in-hand connection of the B-channel voter is realized.

And the double-channel controller and the double-channel voter adopt RS485 bus communication. In the communication process, the controller is in an active status, and the voter is in a passive status. The controller can receive all voters for commands sent by the voters, and the commands of the controller are divided into two types, one type is global commands, namely commands requiring all voters to execute, such as: start voting, stop voting, all voter resets, etc., and another class is individual commands, i.e., commands that require the execution of a single voter, such as a receive command, a stand-alone reset command, etc., that specify a unique address code for that voter. After receiving the controller command, the voter analyzes the command. If the command is found to be a global command, directly starting to execute the command; if the command is found to be an individual command, the unique address code of the command is compared with the address code carried in the command, if the comparison is consistent, the execution is carried out, and if the comparison is inconsistent, the neglect is carried out. The controller realizes serial communication with the voter through the communication protocol. The typical communication process is as follows, after receiving the command of 'start voting' sent by the main control computer, the voting controller firstly sends a global command to require all the voters to enter a voting state; the voter sets the indicator light to be in a flashing state after receiving the command, and starts to read the key value; once a certain key is pressed down, the voter records the key value, and then stops flashing the light to enable the light to be on constantly; after all the voters begin to read the key values, the controller performs polling receiving according to a roll call mode, namely, individual commands of receiving are sent to each voter connected with the controller in sequence, and the voter which is roll call transmits the received key value information to the controller. (if the voter has not pressed the key at this time, the voter will transmit its station number back to the controller). TCP/IP communication is adopted between the dual-channel controller and the main control computer.

The dual-channel voter, the dual-channel controller, the PC, the switch, the display equipment and all the link lines in the system are dual-backup. The two voting systems work simultaneously in parallel, equipment or lines on any channel fail, normal work of the other channel cannot be influenced, manual switching is not needed, and uninterrupted normal operation of a conference can be guaranteed.

The core switch is used for interconnecting the equipment of the channel A and the equipment of the channel B.

In terms of the power supply system we divide the whole power supply network into A, B, C three different sub-networks. The subnet A comprises a channel A main control computer, a channel A switch, a module A of the dual-channel controller and other electric equipment, the subnet B comprises a channel B main control computer, a channel B switch, a module B of the dual-channel controller and other electric equipment, and the subnet C comprises other equipment or workstations without tasks in the voting process. The sub network C includes main and standby database servers, main and standby conference management workstations, main and standby printers, etc. All data information of the system is stored in the main database server and the standby database server; the main and standby conference management workstations are used for adding, deleting and modifying conference information before conference, and generating, storing and printing table result after conference, namely managing data in the main and standby database servers. The devices in the C-network are all devices used before or after a meeting. In order to simplify the system architecture in the conference process, reduce the dependency degree of the voting system on the database and the network during the operation as much as possible, and avoid the influence of the database or network faults on the normal operation of the voting system, the voting master station reads all the data required by the system into the A, B channel master control computer before the conference begins, the database server is not accessed any more in the conference voting process, the voting result data generated in the conference voting process are stored in the A, B channel master control computer and are not stored in the database server through the network, and all the voting results are uniformly stored in the database server after the conference is finished. The three sub-networks are respectively sourced from different power distribution units, so that the purpose of division is to avoid the fault of a certain power supply and not to influence the working capacity of the whole system.

In terms of communication network, we also divide the whole network into A, B, C three communication sub-networks.

A single voter in the system has A, B two independent voting units, each of which can individually implement the functionality of a voter. The A, B voting units in the plurality of voters are respectively connected by hands through voting special cables and then respectively enter the voting controllers, so that A, B two data links are formed. In the voting controller there are also two independent voting control units, which are used to control A, B the two data links, respectively. The voting controller manages A, B two links, which are connected to the voting control host A and the voting control host B through network cables, so as to form two real-time online and mutual backup complete voting links.

As a support network of the system, a set of network system architecture is hoped to be introduced, so that A, B two links which are online in real time and backup each other in the voting system realize region isolation on the premise of self-formation of the system, common network attacks can be defended, and the robustness and stability of the whole network system are enhanced. That is, in the event of a single link failure, the stability and reliability of the other link is not affected.

In the actual voting process, the rhythm is often fast, the voting process of one scheme is completed within 10 seconds, and each scheme voting process needs an operator to perform a series of operations such as "show the scheme", "start voting", "terminate voting", "display voting results", and the like according to the host words of the host. In order to ensure that the voting system operating states and the system data of the two channels are consistent, the operating rhythm of the two main control computers should be consistent as much as possible. It is difficult to ensure operational consistency for a long time if two operators operate the two host computers separately. Therefore, in the system design, communication and command interaction are needed between the A-channel master computer and the B-channel master computer. The specific algorithm is as follows.

When voting is started, the main control A sends a voting starting command to the main control B, then the main control A and the main control B send the voting command to respective corresponding controllers, and a voting state is entered; the controller starts to collect the key information of the voter and sends the key information to the main control computer; the main control A receives the voting data sent by the controller A, forwards the voting data to the main control B while receiving the data, correspondingly, the main control B receives the voting data sent by the controller B, forwards the voting data to the main control A while receiving the data, respectively processes the data of the controller A and the controller B, then combines the data of the controller A and the controller B, and the combination principle is that an invalid key value is replaced by an effective key value, and finally, the combined data are counted and displayed; when voting is terminated, the main control A sends a voting termination command to the main control B, then the main control A and the main control B send voting termination commands to the respective corresponding controllers, and the voting termination is finished.

One-channel or two-channel voter

The double-channel voter is provided with two processing units and independent communication links, the two processing units share one key control board, and one representative key action can be simultaneously collected by two cores. The structure of the double-channel voter is shown in fig. 2, and comprises a double-pole double-throw key, a key circuit board and a double-channel circuit board, wherein: the key circuit board is connected with the double-channel circuit board through the pin header, and two paths of key signals generated by the three keys at the same time are respectively transmitted to two core processing units on the double-channel circuit board to be processed respectively.

In the prior voting system, a hand-in-hand serial communication mode is adopted between single-core voters, and if a certain voter fails, all subsequent voters in a link where the voter is located cannot work. If the core operation unit of the voter has redundant backup, even if a certain voter fails, the normal work of the subsequent voter in the link where the voter is located cannot be influenced, and the normal operation of the system is ensured. In addition, because the two links completely work independently, the fault of any one link, no matter the fault of the core operation unit of the voter, the interruption of the communication line or the fault of the voting controller, can not affect the normal work of the other link.

(1) Double-pole double-throw key and key board

Although the voter has two core operating units, the number of key panels it operates is only one for the participants. A double-pole double-throw micro-motion key is adopted, and two signals can be generated simultaneously by one key action and are collected by two voter cores.

Three double-pole double-throw keys are welded on the key circuit board, two paths of key signals generated by the keys at the same time are received and processed by two sets of mutually independent circuits respectively, and the two circuits are mutually independent and have no connecting channel. The two circuits are respectively connected with a double-channel circuit board below through 4-pin signal connection contact pins on the left side and the right side.

(2) Double-core operation unit real-time hot standby

The voter unit uses two sets of independent core operation units to collect and process the key information in real time, the two cores work in parallel, even if one core operation unit fails, the data receiving, sending and processing of the other unit cannot be influenced, and participants cannot perceive the failure completely, so that the conference agenda can be ensured to be carried out smoothly.

Two core processing units are designed on the dual-channel core processing circuit board, and the two core processing units are not physically connected. The two core processing units respectively acquire the key information on the key board through the signal connection socket and process the key information. Each core processing unit is provided with two voting special cable connecting sockets which are respectively connected with voting special cables on respective channels by hands. The voting special cable is used for establishing communication connection with the voting controller, and carrying out transmission communication of control commands and voting data.

The special cable for voting is a special cable designed and produced in a customized mode for a voting system, the load capacity of a power supply and a signal and the electromagnetic shielding and electrostatic protection functions are fully considered in design, the number of wire cores, the wire diameter, the connection mode and the like of the cable are fully considered, the special wire cores are used for dredging static electricity, the whole cable is provided with a metal shielding layer, the special purpose for the special wire cores is realized, and the electrostatic protection and anti-electromagnetic interference capacity of the cable are fully ensured.

In terms of engineering wiring, the colors of the cables of the two links of the system A/B are obviously distinguished, wherein one link is black, and the other link is white. The selection of the connector types of the two links is also fully considered, one adopts a metal aviation plug, and the other adopts a plastic mould pressing head. The two links are prevented from overlapping while being distinguished obviously.

(3) Indicator light logic control using optocouplers

The three buttons of 'approval, disapproval and abandon right' on the voter panel are respectively provided with a button indicator lamp, and the three button indicator lamps remind the participants to execute corresponding actions through the switching of states such as 'flickering, normally on and off', thereby playing an important communication role. The display of the status of the indicator light must be clear.

The two core units of the voter are respectively provided with a group of indicator lamps, but only one group of key indicator lamps is displayed on the panel, so that only the indicator lamp of one voter core can be displayed in a state at the same time, and the indicator lamp of the other core is required to be in an off state.

Because the two cores of the voter are completely physically independent, the optical coupling technology is adopted for the logic communication between the two voter cores, a set of corresponding logic judgment rules is formulated, and it is ensured that the indicator light of the voter can always correctly show the due state under normal conditions or abnormal conditions of a certain voter core, and the trouble on representatives is avoided.

Normally, the indicator light goes off to indicate that the voter is not entitled to use; the indicator light is normally on to indicate that the voter is in a standby state; the indicator light flickers to indicate that the voter is in a voting state, and at the moment, after the key is pressed, the key information is received by the system.

The two cores AB of the double-core voter operate independently without physical connection, and the two cores adopt a photoelectric coupling device to detect the operating state of the optical signal and perform related logic judgment. The specific mode is that a flag bit is designed on the core A, and when A enters a voting state, the flag bit (bit) is set to be 1; when the B core enters a voting state, the flag bit of the A core is detected to be 1 through the optical coupling signal, the A core is indicated to start to work normally, and the indicator light of the B core cannot flash; if the B core detects that the flag bit of the A core is 0, the running state of the A core is incorrect, and at the moment, an indicator light of the B core begins to flash. In this way it is ensured that after the start of the vote, there is and only one set of indicator lights flashing.

And the two cores AB of the double-core voter are respectively provided with a group of indicator lights, and the states of the indicator lights are only controlled by the corresponding operation core and cannot be controlled in a cross mode. The following is illustrated in two cases:

firstly, in a standby state, the weighted voter and the AB cores can light up respective indicator lamps; the non-weighted voter, AB, both cores' indicator lights go out.

And in the voting state, after the core A receives the voting starting instruction, the indicator light is in a flashing state. After receiving the voting starting instruction, the core B can actively delay for 100ms, within the 100ms, the core B can detect whether the core A works normally through an optical coupling signal, if the core A works normally, the core B indicator light cannot flicker, and if the core A works abnormally, the core B indicator light flickers.

The purpose of doing so is to ensure all the time that, after beginning to vote, only a set of pilot lamp scintillation, if the pilot lamp of two cores of AB all twinkles, can form two state of dodging, brings the puzzlement for the user.

Two-channel voting controller

The voting controller is used as a core device of the voting system, and plays an important role in starting and stopping between the voting controller and the voting main control. If the voting controller adopts a cold standby mode, when a fault occurs, equipment needs to be replaced by temporarily cutting off power, the fault switching time is long, and the conference process can be influenced. If the voting controller link is adopted, the two channels are adopted to work in parallel, and each voting partition is simultaneously supported by two voting controller cores. Even if the voting controller core of any one channel fails, the normal work of the voting controller core of the other channel is not influenced, switching operation is not needed, real-time hot standby is realized, and the conference agenda is ensured to be carried out continuously and smoothly.

Two completely independent control cores are installed inside the dual-channel voting controller, and each control core is provided with an independent input power supply, a switch, a network interface, a cooling fan and a 4-path meter block main cable outlet.

The double cores of the voter are not connected with any circuit, and the communication which must be carried out is realized by a photoelectric coupling device; the dual-core circuit board of the controller is not connected and crossed on any circuit, and independent switch power supplies are adopted; the connection between the controller and the voter is also that different trunk cables are respectively led out from two cores of the controller to be connected, and two special cables with different colors are adopted for distinguishing.

Claims

1. A voting method based on a dual-channel voting system is characterized in that: the method comprises the following steps:

step four, the channel A main control computer and the channel B main control computer receive voting data sent by respective channels and simultaneously forward the voting data to the opposite side;

2. A voting method according to claim 1, characterised in that it comprises the following steps: before the conference begins, the main conference management workstation reads all data required by voting into A, B channel main control computers, the A, B channel main control computer does not access the database server any more in the conference voting process, voting result data generated in the conference voting process are firstly stored in the A, B channel main control computer, and all voting results are uniformly stored in the database server after the conference is finished.

3. A voting method according to claim 1, characterised in that it comprises the following steps: three key indicator lamps are arranged on a panel of the double-channel voter, two core processing units are respectively provided with a group of indicator lamps corresponding to the three key indicator lamps on the panel, and at the same moment, only one group of indicator lamps is used for displaying the state.

4. A voting method according to claim 3, characterised in that it comprises the following steps: the two core processing units A, B control the respective indicator lights as follows: in a standby state, two core processing units of the voter which is entitled to be used light up respective indicator lamps; two core processing units of the voter which is not entitled to use turn off respective indicator lights; in a voting state, after receiving a voting starting instruction, the core processing unit A flashes an indicator light, after receiving the voting starting instruction, the core processing unit B delays for 100ms and detects whether the core processing unit A works normally through an optical coupling signal, if so, the indicator light of the core processing unit B does not flash, otherwise, the indicator light of the core processing unit B flashes.

5. A voting method based on a two-channel voting system according to claim 4, wherein: the method for judging whether the core processing unit A works normally comprises the following steps: designing a flag bit on a core processing unit A, and when the core processing unit A enters a voting state, setting the flag bit to be 1; if the core processing unit B entering the voting state detects that the flag bit of the core A is 1 through the optical coupling signal, the core processing unit A is indicated to work normally, otherwise, the core processing unit A is indicated to work abnormally.

6. A voting method according to claim 1, characterised in that it comprises the following steps: adopt RS485 bus communication between dual channel controller and the binary channels voter, dual channel controller is in initiative status in the communication process, and the binary channels voter is in passive status, and the command that dual channel controller sent to the binary channels voter includes overall situation order and individuation order, and the binary channels voter receives the order after, at first analyzes the order: if the command is a global command, directly starting to execute the command; if the command is an individual command, comparing the unique address code with the address code carried in the command: if the comparison is consistent, the command is executed, and if the comparison is inconsistent, the command is ignored.

7. A voting method based on a two-channel voting system according to claim 6, wherein: after receiving the command of 'start voting' sent by the main control computer, the dual-channel controller firstly sends a global command to require all the voters to enter a voting state; after receiving the command, each voter sets the indicator lamp to be in a flashing state and starts to read the key value; once a certain key of a certain voter is pressed, the voter records the key value, and then the light is stopped flashing, so that the light is always on; after all the voters begin to read the key values, the dual-channel controller sends a 'receiving' individual command to each voter connected with the controller according to the sequence, the voter which is clicked to the name transmits the received key value information to the controller, and if a voter is not pressed at the moment, the voter returns the station number to the controller.