CN217982164U - PEDC circuit applied to high-speed rail platform door - Google Patents

Abstract

The utility model discloses a be applied to PEDC circuit of high-speed railway platform door relates to the emergent technical field of high-speed railway, include: receiving switching gate signals sent by the IBP, the PSL and the SIG, controlling the corresponding signal receiving sub-circuits to be switched on according to the switching gate signals, generating trigger signals after the switching on and sending the trigger signals, and realizing three-stage control of the signal receiving circuit of the IBP, the PSL and the SIG; and receiving a trigger signal sent by the signal receiving circuit, controlling the corresponding door opening and closing logic sub-circuit to be conducted according to the trigger signal, generating a door opening and closing signal after the door opening and closing logic sub-circuit is conducted, and sending the door opening and closing signal to a door opening and closing logic circuit of the platform controller. According to the PEDC circuit, the gate opening and closing logic circuit uses a traditional circuit to realize gate opening and closing signal processing, and compared with a communication control circuit, the PEDC circuit is low in risk and more reliable; when any one device fails, the other two devices can open and close the platform door in time; the high-grade device can take over the low-grade device to operate at any time, and the influence on the safety of the personnel at the platform due to other uncertain factors is avoided.

Description

PEDC circuit applied to high-speed rail platform door

Technical Field

The utility model relates to an emergent technical field of high-speed railway, more specifically say and relate to a be applied to PEDC circuit of high-speed railway platform door.

Background

The PEDC device of the high-speed railway platform door is an important component for executing and feeding back key commands inside and outside the platform door system, and is a component which has great influence on the safe and reliable indexes of the system, for example, after the PEDC fails, the whole side cannot be controlled to open and close the door, and normal operation is influenced. The PEDC device of the existing high-speed railway platform door utilizes software to realize control logic, the software control is unstable, more fault points are provided than the traditional circuit, and once the software collapses, the whole side platform can not normally open and close the door.

In the prior art, a patent with publication number CN216697056U discloses a platform door control and monitoring separation system, belonging to the technical field of rail transit communication. The utility model discloses a PEDC controller, PEDC controller are located between platform door control system and the PLC controller, wherein: the PEDC controller comprises a control board, and a terminal group, a relay and an indicator light which are positioned on the control board; the terminal components are a SIG terminal, a PSL terminal, an IBP terminal and a DCU terminal; the input end of the PEDC controller is connected with the platform door control system through the SIG terminal, the PSL terminal and the IBP terminal respectively, and the output end of the PEDC controller is connected with the PLC controller and the DCU unit door system respectively; the structure is simple, the installation is convenient, the failure of opening and closing of the platform door at the whole side caused by the failure of information transmission of a control system due to network disorder is effectively avoided, and accurate guarantee can be provided for the normal linkage of the platform door; the method can be widely applied to rail transit communication occasions.

The station door control and monitoring separation system disclosed in the above patent, the control of SIG, PSL and IBP, has no logical sequence, and when two or three signals of SIG, PSL and IBP are received simultaneously, the system does not know which signal to execute first, which may cause the following problems: (1) may cause a system to be flawed or paralyzed; (2) a platform door open-close failure; (3) influence the passengers to get on or off the bus normally; (4) the normal operation of the platform is influenced; (5) when an accident occurs in the platform, the operator with the highest-grade IBP cannot operate the IBP to evacuate the platform personnel.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect that exists among the above-mentioned prior art, the utility model aims at providing a be applied to PEDC circuit of high-speed railway platform door to solve the control of above-mentioned SIG, PSL and IBP, do not have logic precedence, when receiving two or three signals in SIG, PSL, the IBP simultaneously, the system does not know which signal of carrying out earlier, a series of problems that can lead to.

In order to realize the above purpose, the utility model discloses a technical scheme:

a PEDC circuit for use in a high-speed rail station door, comprising:

receiving switching gate signals sent by the IBP, the PSL and the SIG, controlling the corresponding signal receiving sub-circuits to be switched on according to the switching gate signals, generating trigger signals after the switching on and sending the trigger signals, and realizing three-stage control of the signal receiving circuit of the IBP, the PSL and the SIG;

and receiving the trigger signal sent by the signal receiving circuit, controlling the corresponding gate switching logic sub-circuit to be switched on according to the trigger signal, generating a gate switching signal after the gate switching logic sub-circuit is switched on, and sending the gate switching signal to the gate switching logic circuit of the platform controller.

The utility model discloses in, the switch door signal that switch door logic circuit sent is received to the platform controller to according to switch door signal control platform door switching. The PEDC device (in which the PEDC circuit is arranged) is installed in an equipment room, and the platform controller is installed at a platform, is mainly used for executing instructions sent by the PEDC device and feeding back relevant information of a platform door, and belongs to PEDC lower-level equipment.

The utility model discloses in, SIG is signal system (the device that normal conditions sent the switch door signal), and PSL is the ground control dish (the controlling means who is used for controlling the platform door), and IBP is emergency control dish (control platform door gear under the emergency).

Further, the signal receiving circuit comprises an IBP signal receiving sub-circuit, a PSL signal receiving sub-circuit and a SIG signal receiving sub-circuit which are arranged in parallel;

the IBP signal receiving sub-circuit comprises an IBP relay and an IBP switch which are connected in series;

the PSL signal receiving sub-circuit comprises a PSL relay, a PSL switch and a normally closed contact of an IBP relay which are connected in series;

the SIG signal receiving sub-circuit comprises a SIG relay, a SIG switch, a normally closed contact of an IBP relay and a normally closed contact of a PSL relay which are connected in series.

The utility model discloses in, through the normally closed contact that sets up the IBP relay on PSL signal reception sub-circuit, set up the normally closed contact of IBP relay and the normally closed contact of PSL relay on SIG signal reception sub-circuit to realize tertiary control IBP > PSL > SIG.

Furthermore, an IBP indicator light, a PSL indicator light and a SIG indicator light are connected in parallel beside the IBP relay, the PSL relay and the SIG relay respectively.

Further, the switch gate logic circuit includes an IBP switch gate logic sub-circuit, a PSL switch gate logic sub-circuit, and a SIG switch gate logic sub-circuit, which are arranged in parallel, and:

a door opening command sub-circuit which sends a door opening command to the platform controller according to the connection of the IBP door opening and closing logic sub-circuit, the PSL door opening and closing logic sub-circuit or the SIG door opening and closing logic sub-circuit;

and the door closing command subcircuit sends a door closing command to the platform controller according to the breakover of a door closing logic subcircuit in the IBP door opening and closing logic subcircuit, the PSL door opening and closing logic subcircuit or the SIG door opening and closing logic subcircuit.

The utility model discloses in, IBP switch door logic sub-circuit, PSL switch door logic sub-circuit, SIG switch door logic sub-circuit, the order sub-circuit that opens the door and the equal parallelly connected setting of order sub-circuit that closes the door.

Preferably, the IBP door opening and closing logic sub-circuit includes an IBP door opening logic sub-circuit and an IBP door closing logic sub-circuit that are arranged in parallel;

the trunk circuit of the IBP door opening logic sub-circuit and the trunk circuit of the IBP door closing logic sub-circuit are provided with normally open contacts of an IBP relay; the IBP door opening logic sub-circuit comprises a first relay, a normally closed contact of a second relay and an IBP door opening button which are connected in series; the IBP door-closing logic sub-circuit comprises a second relay, a normally closed contact of a first relay and an IBP door-closing button which are connected in series.

Preferably, the PSL gate-opening and closing logic sub-circuit includes a PSL gate-opening logic sub-circuit and a PSL gate-closing logic sub-circuit which are arranged in parallel;

normally open contacts of the PSL relay are arranged on trunk circuits of the PSL door opening logic sub-circuit and the PSL door closing logic sub-circuit; the PSL door opening logic sub-circuit comprises a third relay, a normally closed contact of a fourth relay and a PSL door opening button which are connected in series; the PSL door closing logic sub-circuit comprises a fourth relay, a normally closed contact of a third relay and a PSL door closing button which are connected in series.

Preferably, the SIG switch gate logic sub-circuit comprises a SIG gate opening logic sub-circuit and a SIG gate closing logic sub-circuit which are arranged in parallel;

the main lines of the SIG door opening logic sub-circuit and the SIG door closing logic sub-circuit are provided with normally open contacts of the SIG relay; the SIG door opening logic sub-circuit comprises a fifth relay, a normally closed contact of a sixth relay and a SIG door opening button which are connected in series; the SIG door-closing logic sub-circuit comprises a sixth relay, a normally closed contact of a fifth relay and a SIG door-closing button which are connected in series.

Preferably, the door opening command sub-circuit comprises a normally open contact of a first relay, a normally open contact of a third relay and a normally open contact of a fifth relay which are arranged in parallel; and a door opening relay for sending a door opening command to the platform controller is arranged on the trunk lines of the normally open contact of the first relay, the normally open contact of the third relay and the normally open contact of the fifth relay.

Preferably, the door closing command sub-circuit comprises a normally open contact of a second relay, a normally open contact of a fourth relay and a normally open contact of a sixth relay which are arranged in parallel; and the door closing relay which sends a door closing command to the platform controller is arranged on the trunk paths of the normally open contact of the second relay, the normally open contact of the fourth relay and the normally open contact of the sixth relay.

The utility model has the advantages that:

the utility model provides a be applied to PEDC circuit of high-speed railway platform door receives the signal that external signal source sent, realizes tertiary control IBP > PSL > SIG: (1) when any one device fails, the other two devices can open and close the platform door in time; (2) the high-grade device can take over the low-grade device to operate at any time, and the influence on the safety of the personnel at the platform due to other uncertain factors is avoided.

The utility model provides a be applied to PEDC circuit of high-speed railway platform door, switch door logic circuit uses traditional circuit to realize switch door signal processing, compares that the communication control risk is low, more reliable.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is a schematic diagram of a signal receiving circuit according to the present invention;

fig. 3 is a schematic diagram of the logic circuit of the switch gate of the present invention.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below with reference to the embodiments and the accompanying drawings, so as to fully understand the objects, the features, and the effects of the present invention.

Example 1

A PEDC circuit for a high-speed rail platform door, as shown in fig. 1, comprising:

receiving switching gate signals sent by the IBP, the PSL and the SIG, controlling the corresponding signal receiving sub-circuits to be switched on according to the switching gate signals, generating trigger signals after the switching on and sending the trigger signals, and realizing three-stage control of the signal receiving circuit of the IBP, the PSL and the SIG;

and receiving the trigger signal sent by the signal receiving circuit, controlling the corresponding gate switching logic sub-circuit to be switched on according to the trigger signal, generating a gate switching signal after the gate switching logic sub-circuit is switched on, and sending the gate switching signal to the gate switching logic circuit of the platform controller.

In this embodiment, the platform controller receives the door opening and closing signal sent by the door opening and closing logic circuit, and controls the platform door to open and close according to the door opening and closing signal. The PEDC device (provided with the PEDC circuit therein) is installed in an equipment room, and the platform controller is installed at a platform, is mainly used for executing instructions sent by the PEDC device and feeding back relevant information of a platform door, and belongs to PEDC subordinate equipment.

SIG is a signal system (a device for sending a door opening and closing signal in a normal case), PSL is a ground control panel (a control device for controlling a platform door), and IBP is an emergency control panel (a device for controlling the platform door in an emergency case). BP is a hard wire connection, PSL and SIG are bus communication modes, and compared with the bus communication mode, the hard wire connection mode is more stable and has lower failure rate; compared with a hard wire connection mode, the bus communication mode is more economical and has higher expansibility; the two are combined, and the advantages and the disadvantages are complementary, so that the whole system is more stable and firm.

The signal receiving circuit receives an external switch gate signal and controls the corresponding circuit to be conducted according to the source of the switch gate signal to generate a trigger signal (the signal receiving circuit can receive switch gate signals of different levels, and three-level control that SIG is more than PSL and more than IBP is realized). The gate switching logic circuit controls the corresponding gate switching logic sub-circuit to be conducted according to the trigger signal, generates a gate switching signal and sends the gate switching signal to a platform controller (DCU). The platform controller (DCU) sends out a door opening and closing signal according to the logic circuit to realize the door opening or closing action, thereby reducing the influence of the platform door on the operation of the platform when the signal system fails and the door opening and closing signal can not be sent out, and ensuring the stable operation of the platform and the personnel safety of the platform.

Example 2

This embodiment is further improved on the basis of embodiment 1, and as shown in fig. 2, the signal receiving circuit includes an IBP signal receiving sub-circuit, a PSL signal receiving sub-circuit, and a SIG signal receiving sub-circuit, which are arranged in parallel;

the IBP signal receiving sub-circuit comprises IBP relays S1-KA and an IBP switch S1 which are connected in series;

the PSL signal receiving sub-circuit comprises a PSL relay S2-KA, a PSL switch S2 and normally closed contacts S1-KA of an IBP relay which are connected in series;

the SIG signal receiving sub-circuit comprises SIG relays S3-KA, a SIG switch S3, normally closed contacts S1-KA of an IBP relay and normally closed contacts S2-KA of a PSL relay which are connected in series.

IBP relay, PSL relay and SIG relay are other to be connected in parallel respectively have IBP pilot lamp H1, PSL pilot lamp H2 and SIG pilot lamp H3.

In this embodiment, the signal receiving circuit may receive the switch gate signals from SIG, PSL, IBP, and the receiving circuit may implement three-level control IBP > PSL > SIG. The receiving circuit mainly comprises safety relays S1-KA, S2-KA and S3-KA, wherein S1 is an IBP operation allowing signal, S2 is a PSL operation allowing signal, and S3 is an SIG operation allowing signal; the S1-KA normally closed contacts are connected in series in the S2-KA and S3-KA circuits, and the S2-KA normally closed contacts are connected in series in the S3-KA circuits; normally open contacts S1-KA, S2-KA and S3-KA are connected in series in the logic circuit to control the logic circuit, and three-level control is realized in a mode of connecting auxiliary contacts in series.

Example 3

In this embodiment, a further improvement is made on the basis of embodiment 2, as shown in fig. 3, the switch gate logic circuit includes an IBP switch gate logic sub-circuit, a PSL switch gate logic sub-circuit, and an SIG switch gate logic sub-circuit, which are arranged in parallel, and:

the door opening command subcircuit sends a door opening command to the platform controller according to the connection of the door opening logic subcircuit in the IBP door opening and closing logic subcircuit, the PSL door opening and closing logic subcircuit or the SIG door opening and closing logic subcircuit;

and the door closing command subcircuit sends a door closing command to the platform controller according to the breakover of a door closing logic subcircuit in the IBP door opening and closing logic subcircuit, the PSL door opening and closing logic subcircuit or the SIG door opening and closing logic subcircuit.

The method comprises the following specific steps:

(1) IBP switch gate logic subcircuit

The IBP door opening and closing logic sub-circuit comprises an IBP door opening logic sub-circuit and an IBP door closing logic sub-circuit which are arranged in parallel;

normally open contacts S1-KA of an IBP relay are arranged on a trunk line of the IBP door opening logic sub-circuit and the IBP door closing logic sub-circuit; the IBP door opening logic sub-circuit comprises a first relay K1, a normally closed contact K2 of a second relay and an IBP door opening button IBP-S1 which are connected in series; the IBP door closing logic sub-circuit comprises a second relay K2, a normally closed contact K1 of a first relay and an IBP door closing button IBP-S2 which are connected in series.

(2) PSL switch gate logic subcircuit

The PSL gate opening and closing logic sub-circuit comprises a PSL gate opening logic sub-circuit and a PSL gate closing logic sub-circuit which are arranged in parallel;

normally open contacts S2-KA of a PSL relay are arranged on a trunk of the PSL door opening logic sub-circuit and the PSL door closing logic sub-circuit; the PSL door opening logic sub-circuit comprises a third relay K3, a normally closed contact K4 of a fourth relay and a PSL door opening button PSL-S1 which are connected in series; the PSL door-closing logic sub-circuit comprises a fourth relay K4, a normally closed contact K3 of a third relay and a PSL door-closing button PSL-S2 which are connected in series.

(3) SIG switch gate logic subcircuit

The SIG switch gate logic sub-circuit comprises a SIG gate opening logic sub-circuit and a SIG gate closing logic sub-circuit which are arranged in parallel;

normally open contacts S3-KA of the SIG relay are arranged on a trunk circuit of the SIG door opening logic sub-circuit and the SIG door closing logic sub-circuit; the SIG door opening logic sub-circuit comprises a fifth relay K5, a normally closed contact K6 of a sixth relay and a SIG door opening button SIG-S1 which are connected in series; the SIG door-closing logic sub-circuit comprises a sixth relay K6, a normally closed contact K5 of a fifth relay and a SIG door-closing button SIG-S2 which are connected in series.

(4) Door opening command subcircuit

The door opening command sub-circuit comprises a normally open contact K1 of a first relay, a normally open contact K3 of a third relay and a normally open contact K5 of a fifth relay which are arranged in parallel; and a door opening relay Kkm which sends a door opening command to the platform controller is arranged on a trunk line of the normally open contact K1 of the first relay, the normally open contact K3 of the third relay and the normally open contact K5 of the fifth relay.

(5) Door closing command sub-circuit

The door closing command sub-circuit comprises a normally open contact K2 of a second relay, a normally open contact K4 of a fourth relay and a normally open contact K6 of a sixth relay which are arranged in parallel; and a door closing relay Kgm which sends a door closing command to the platform controller is arranged on the trunk paths of the normally open contact K2 of the second relay, the normally open contact K4 of the fourth relay and the normally open contact K6 of the sixth relay.

In this embodiment, for the IBP, after the IBP obtains the operation permission, the IBP-S1 door opening button or the IBP-S2 door closing button is operated, the corresponding door opening and closing control relay K1\ K2 is turned on, and the normally open contact connected in series to the km \ Kgm relay is turned on to turn on the km \ Kgm relay at the same time, and after the km \ Kgm relay is turned on, the normally open contact is used to send a door opening and closing command to the platform controller DCU. The PSL, SIG and IBP control principles are the same, and will not be described again here.

For better understanding, the utility model discloses, following is to the theory of operation of the utility model make a complete description:

（1）IBP

on the signal receiving circuit, the signal receiving circuit receives a switch gate signal sent by the IBP, the IBP switch S1 is closed, the IBP signal receiving sub-circuit is conducted, the IBP relay S1-KA is electrified, and the IBP indicator light H1 is lightened. On the PSL signal receiving sub-circuit and the SIG signal receiving sub-circuit, normally closed contacts S1-KA of the IBP relay are disconnected, and the PSL signal receiving sub-circuit and the SIG signal receiving sub-circuit are not conducted.

On an IBP switch gate logic sub-circuit of the switch gate logic circuit, normally open contacts S1-KA of an IBP relay are closed:

when the door needs to be opened, the IBP door opening button IBP-S1 is closed, the IBP door opening logic sub-circuit is conducted, and the first relay K1 is electrified; after the K1 is electrified, a normally closed contact K1 of a first relay on the IBP door-closing logic sub-circuit is disconnected, and the IBP door-closing logic sub-circuit is not conducted; after the K1 is electrified, a normally open contact K1 of a first relay on the door opening command sub-circuit is closed, the door opening command sub-circuit is conducted, the door opening relay Kkm is electrified, the normally open contact of the door opening relay Kkm is closed, a door opening command is sent to the platform controller DCU, and the platform controller DCU controls the platform door to be opened according to the door opening command.

When the door needs to be closed, the IBP door-closing button IBP-S2 is closed, the IBP door-closing logic sub-circuit is conducted, and the second relay K2 is electrified; after the K2 is electrified, a normally closed contact K2 of a second relay on the IBP door opening logic sub-circuit is disconnected, and the IBP door opening logic sub-circuit is not conducted; after the K2 is electrified, the normally open contact K2 of the second relay on the door closing command sub-circuit is closed, the door closing command sub-circuit is switched on, the door closing relay Kgm is electrified, the normally open contact of the door closing relay Kgm is closed, a door closing command is sent to the platform controller DCU, and the platform controller DCU controls the platform door to be closed according to the door closing command.

（2）PSL

On the signal receiving circuit, the signal receiving circuit receives a switch gate signal sent by the PSL, the PSL switch S2 is closed, the PSL signal receiving sub-circuit is conducted, the PSL relays S2-KA are electrified, and the PSL indicator light H2 is lightened. On the SIG signal receiving sub-circuit, the normally closed contacts S2-KA of the PSL relay are disconnected, and the SIG signal receiving sub-circuit is not conducted.

On a PSL switch gate logic sub-circuit of the switch gate logic circuit, normally open contacts S2-KA of a PSL relay are closed:

when the door needs to be opened, a PSL door opening button PSL-S1 is closed, a PSL door opening logic sub-circuit is conducted, and a third relay K3 is electrified; after the K3 is electrified, a normally closed contact K3 of a third relay on the PSL door-closing logic sub-circuit is disconnected, and the PSL door-closing logic sub-circuit is not conducted; after the K3 is electrified, a normally open contact K3 of a third relay on the door opening command sub-circuit is closed, the door opening command sub-circuit is conducted, the door opening relay Kkm is electrified, the normally open contact of the door opening relay Kkm is closed, a door opening command is sent to the platform controller DCU, and the platform controller DCU controls the platform door to be opened according to the door opening command.

When the door needs to be closed, the PSL door-closing button PSL-S2 is closed, the PSL door-closing logic sub-circuit is conducted, and the fourth relay K4 is electrified; after the K4 is electrified, a normally closed contact K4 of a fourth relay on the PSL door opening logic sub-circuit is disconnected, and the PSL door opening logic sub-circuit is not conducted; after the K4 is electrified, a normally open contact K4 of a fourth relay on the door closing command sub-circuit is closed, the door closing command sub-circuit is switched on, a door closing relay Kgm is electrified, the normally open contact of the door closing relay Kgm is closed, a door closing command is sent to the platform controller DCU, and the platform controller DCU controls the platform door to be closed according to the door closing command.

（3）SIG

On the signal receiving circuit, the signal receiving circuit receives a gate opening and closing signal sent by the SIG, the SIG switch S3 is closed, the SIG signal receiving sub-circuit is switched on, the SIG relay S3-KA is powered on, and the SIG indicator light H3 is lightened.

On the SIG switching gate logic sub-circuit of the switching gate logic circuit, normally open contacts S3-KA of the SIG relay are closed:

when the door needs to be opened, the SIG door opening button SIG-S1 is closed, the SIG door opening logic sub-circuit is conducted, and the fifth relay K5 is electrified; after the power supply K5 is switched on, a normally closed contact K5 of a fifth relay on the SIG door closing logic sub-circuit is switched off, and the SIG door closing logic sub-circuit is not conducted; after the K5 is electrified, a normally open contact K5 of a fifth relay on the door opening command sub-circuit is closed, the door opening command sub-circuit is conducted, the door opening relay Kkm is electrified, the normally open contact of the door opening relay Kkm is closed, a door opening command is sent to the platform controller DCU, and the platform controller DCU controls the platform door to be opened according to the door opening command.

When the door needs to be closed, the SIG door closing button SIG-S2 is closed, the SIG door closing logic sub-circuit is conducted, and the sixth relay K6 is electrified; after the K6 is electrified, a normally closed contact K6 of a sixth relay on the SIG door opening logic sub-circuit is disconnected, and the SIG door opening logic sub-circuit is not conducted; after the K6 is electrified, the normally open contact K6 of the sixth relay on the door closing command sub-circuit is closed, the door closing command sub-circuit is switched on, the door closing relay Kgm is electrified, the normally open contact of the door closing relay Kgm is closed, a door closing command is sent to the platform controller DCU, and the platform controller DCU controls the platform door to be closed according to the door closing command.

In the PEDC circuit applied to a high-speed railway platform door provided by the embodiment, normally closed contacts S1-KA of an IBP relay are arranged on a PSL signal receiving sub-circuit, normally closed contacts S1-KA of the IBP relay and normally closed contacts S2-KA of the PSL relay are arranged on an SIG signal receiving sub-circuit, and when an IBP exists, the PSL signal receiving sub-circuit and the SIG signal receiving sub-circuit are not conducted; when the PSL exists, the SIG signal receiving sub-circuit is not conducted, three-level control IBP > PSL > SIG is achieved, when any one device breaks down, the other two devices can open and close the platform door in time, the high-level device can take over operation of the low-level device at any time, and the influence on the personnel safety of the platform due to other uncertain factors is prevented.

The embodiments of the present invention have been described in detail, but the present invention is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and the equivalents or substitutions are included in the scope of the present invention defined by the claims.

Claims (9)

1. A PEDC circuit for use in a high-speed rail platform door, comprising:

receiving switch gate signals sent by the IBP, the PSL and the SIG, controlling the corresponding signal receiving sub-circuits to be conducted according to the switch gate signals, generating trigger signals after the switch gate signals are conducted, and sending the trigger signals to realize three-level control of the signal receiving circuit of the IBP, the PSL and the SIG;

and receiving the trigger signal sent by the signal receiving circuit, controlling the corresponding gate switching logic sub-circuit to be switched on according to the trigger signal, generating a gate switching signal after the gate switching logic sub-circuit is switched on, and sending the gate switching signal to the gate switching logic circuit of the platform controller.

2. The PEDC circuit applied to a high-speed railway platform door according to claim 1, wherein the signal receiving circuit comprises an IBP signal receiving sub-circuit, a PSL signal receiving sub-circuit and a SIG signal receiving sub-circuit arranged in parallel;

the IBP signal receiving sub-circuit comprises an IBP relay and an IBP switch which are connected in series;

the PSL signal receiving sub-circuit comprises a PSL relay, a PSL switch and normally closed contacts of an IBP relay which are connected in series;

the SIG signal receiving sub-circuit comprises a SIG relay, a SIG switch, a normally closed contact of an IBP relay and a normally closed contact of a PSL relay which are connected in series.

3. The PEDC circuit for use in high-speed rail platform doors according to claim 2, wherein an IBP indicator light, a PSL indicator light and a SIG indicator light are connected in parallel to the IBP relay, the PSL relay and the SIG relay, respectively.

4. The PEDC circuit for a high-speed rail platform door of claim 2, wherein the switch gate logic circuit comprises an IBP switch gate logic sub-circuit, a PSL switch gate logic sub-circuit and a SIG switch gate logic sub-circuit arranged in parallel, and:

a door opening command sub-circuit which sends a door opening command to the platform controller according to the connection of the IBP door opening and closing logic sub-circuit, the PSL door opening and closing logic sub-circuit or the SIG door opening and closing logic sub-circuit;

and the door closing command subcircuit sends a door closing command to the platform controller according to the breakover of a door closing logic subcircuit in the IBP door opening and closing logic subcircuit, the PSL door opening and closing logic subcircuit or the SIG door opening and closing logic subcircuit.

5. The PEDC circuit applied to high-speed railway platform doors according to claim 4, wherein the IBP door opening and closing logic sub-circuit comprises an IBP door opening logic sub-circuit and an IBP door closing logic sub-circuit which are arranged in parallel;

the trunk circuit of the IBP door opening logic sub-circuit and the trunk circuit of the IBP door closing logic sub-circuit are provided with normally open contacts of an IBP relay; the IBP door opening logic sub-circuit comprises a first relay, a normally closed contact of a second relay and an IBP door opening button which are connected in series; the IBP door-closing logic sub-circuit comprises a second relay, a normally closed contact of a first relay and an IBP door-closing button which are connected in series.

6. The PEDC circuit for a high-speed railway platform door of claim 5, wherein the PSL gate open and close logic sub-circuit comprises a PSL gate open and a PSL gate close logic sub-circuit arranged in parallel;

the main circuit of the PSL door opening logic sub-circuit and the main circuit of the PSL door closing logic sub-circuit are provided with normally open contacts of a PSL relay; the PSL door opening logic sub-circuit comprises a third relay, a normally closed contact of a fourth relay and a PSL door opening button which are connected in series; the PSL door closing logic sub-circuit comprises a fourth relay, a normally closed contact of a third relay and a PSL door closing button which are connected in series.

7. The PEDC circuit for use in high-speed rail platform doors according to claim 6, wherein the SIG switching gate logic sub-circuit comprises a SIG gate open logic sub-circuit and a SIG gate close logic sub-circuit arranged in parallel;

the main lines of the SIG door opening logic sub-circuit and the SIG door closing logic sub-circuit are provided with normally open contacts of the SIG relay; the SIG door opening logic sub-circuit comprises a fifth relay, a normally closed contact of a sixth relay and a SIG door opening button which are connected in series; the SIG door-closing logic sub-circuit comprises a sixth relay, a normally closed contact of a fifth relay and a SIG door-closing button which are connected in series.

8. The PEDC circuit applied to a high-speed railway platform door according to claim 7, wherein the door opening command sub-circuit comprises a normally open contact of a first relay, a normally open contact of a third relay and a normally open contact of a fifth relay arranged in parallel; and a door opening relay for sending a door opening command to the platform controller is arranged on the trunk lines of the normally open contact of the first relay, the normally open contact of the third relay and the normally open contact of the fifth relay.

9. The PEDC circuit applied to a high-speed railway platform door according to claim 7, wherein the door closing command sub-circuit comprises a normally open contact of a second relay, a normally open contact of a fourth relay and a normally open contact of a sixth relay arranged in parallel; and the door closing relay which sends a door closing command to the platform controller is arranged on the trunk paths of the normally open contact of the second relay, the normally open contact of the fourth relay and the normally open contact of the sixth relay.

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