CN211580251U - EMUs safety loop pilot lamp control system - Google Patents
EMUs safety loop pilot lamp control system Download PDFInfo
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- CN211580251U CN211580251U CN202020682648.2U CN202020682648U CN211580251U CN 211580251 U CN211580251 U CN 211580251U CN 202020682648 U CN202020682648 U CN 202020682648U CN 211580251 U CN211580251 U CN 211580251U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model relates to a EMUs safety loop pilot lamp control system, include: a safety loop protection circuit and a safety loop control circuit; the safety loop protection circuit comprises relays KM1 and KM2, an alarm switch K1 and a protection resistor R0; the relays KM1 and KM2 are respectively connected with the alarm switch K1 in parallel and then are connected with a protective resistor R0 in series to be connected to a power supply voltage VCC; the safety loop control circuit comprises a light emitting diode LED1, an LED2, a voltage regulator tube T1, a switch tube G1 and an indicator light LED 3; the LED1 is connected with a voltage regulator tube T1 in series and then connected with the LED2 in parallel to the two ends of the alarm switch K1, the anode of the LED1 is connected with the cathode of the LED2, and the anode of the LED2 is grounded; the G pole of the switch tube G1 is connected to the cathode of the LED2, the D pole is connected in series with the indicator LED3 and then connected to the power supply voltage VCC, and the S pole is grounded. The utility model discloses increased the safety loop control circuit on current EMUs safety loop system basis, can carry out alarm control to the trouble in the system.
Description
Technical Field
The utility model belongs to the technical field of EMUs loop control, especially, relate to a EMUs safety loop pilot lamp control system.
Background
The principle of the existing motor train unit safety loop system is shown in fig. 1, wherein a rated value of a main line voltage VCC is DC110V, and the lowest rated value is 88V; the coil internal resistances of the relay KM1 and the relay KM2 are 5330 omega, and the relay action voltage range is 44V-137.5V. In normal operation, when the main line voltage VCC is 88V-DC110V, the safety loop voltage V is about 60.7V-75.85V, and both relays act; when the alarm switch K1 is closed, the safety loop voltage V level is pulled low, and the relay restores the default state. Due to the lack of external indication of the safety loop, when the alarm switch K1 is closed, there is no way to visually learn the loop system fault condition at the first time to respond quickly, and therefore there is a need for improvement based on the safety loop system described above.
SUMMERY OF THE UTILITY MODEL
The utility model discloses further improve on the basis that above-mentioned current EMUs safety loop system is not enough, increased safety loop control circuit, provide a EMUs safety loop pilot lamp control system, through safety loop control circuit, can in time report to the police to the various trouble in the system, carry out fault control.
In order to realize the above-mentioned purpose, the utility model provides a EMUs safety loop pilot lamp control system, include: a safety loop protection circuit and a safety loop control circuit;
the safety loop protection circuit comprises relays KM1 and KM2, an alarm switch K1 and a protection resistor R0; the relays KM1 and KM2 are respectively connected with the alarm switch K1 in parallel and then are connected with a protective resistor R0 in series to be connected to a power supply voltage VCC;
the safety loop control circuit comprises a light emitting diode LED1, an LED2, a voltage regulator tube T1, a switch tube G1 and an indicator light LED 3; the LED1 is connected with a voltage regulator tube T1 in series and then connected with the LED2 in parallel to the two ends of the alarm switch K1, the anode of the LED1 is connected with the cathode of the LED2, and the anode of the LED2 is grounded;
the G pole of the switch tube G1 is connected to the cathode of the LED2, the D pole is connected in series with the indicator LED3 and then connected to the power supply voltage VCC, and the S pole is grounded.
Preferably, the safety loop control circuit further comprises protection resistors R1, R2, R3;
the protective resistor R1 is connected between the anode of the LED1 and the alarm switch K1 in series;
the protective resistor R2 is connected to two ends of the LED2 in parallel;
the protection resistor R3 is connected in series between the cathode of the LED2 and the G pole of the switching tube G1.
Preferably, the safety loop control circuit further comprises an anti-reverse diode LED4, the anti-reverse diode LED4 is connected in series with the indicator light LED3, the cathode of the anti-reverse diode LED4 is connected with the indicator light LED3, and the anode is connected with VCC.
Preferably, the switching tube is an MOS tube or an IGBT.
Preferably, the relays KM1 and KM2 are voltage relays or current relays.
Preferably, the relay is of a normally open type.
Preferably, the indicator light LED3 is mounted on the panel of the power distribution box in the mechanic's room, and is a single color or two-color LED.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
the utility model discloses improve on the basis of current EMUs safety loop system, increased safety loop control circuit, through safety loop control circuit, can in time report to the police to various trouble in the system to can judge different fault types simultaneously, carry out fault control. The LED1 is connected with the voltage regulator tube T1 in series and then connected with the LED2 in parallel to the two ends of the alarm switch K1, the G pole of the switch tube G1 is connected to the cathode of the LED2, and the D pole is connected with the indicator light LED3 and the anti-reverse diode LED4 in series and then connected to the power supply voltage VCC. Namely, in a normal working state, the two relays KM1 and KM2 both act, the safety loop voltage V drives the switch tube G1 to be conducted through the voltage regulator tube T1, and the external indicator lamp LED3 is on; when the alarm switch K1 is closed, the voltage level V of the safety loop is pulled low, the relays KM1 and KM2 recover the default state, the switch tube G1 is disconnected, and the external indicator light LED3 is turned off. The light emitting diode LED1 is used for indicating internal faults of the system, and in a normal working state, when the switch tube G1 has faults, the external indicator lamp LED3 is turned off, and the light emitting diode LED1 is turned on; the light emitting diode LED2 is used for reverse connection protection and indication of the safety loop voltage V and the GND, so that when the safety loop voltage V is reversely connected with the outside of the GND, the light emitting diode LED2 is conducted to protect the light emitting diode LED1 from being broken down; the diode LED4 is used for reverse connection protection between the external rail VCC and GND, so that when the external rail voltage VCC is connected to GND, the diode LED4 protects the MOS transistor G1 from breakdown. The utility model discloses a safety loop pilot lamp control system design is simple, and maneuverability is strong.
Drawings
FIG. 1 is a schematic diagram of a safety loop system of a motor train unit;
fig. 2 is the utility model discloses a EMUs safety loop pilot lamp control system circuit schematic diagram.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings.
As in the existing motor train unit safety loop system in fig. 1, the rated value of the main line voltage VCC is DC110V, and the lowest voltage VCC is 88V; the action voltage range of the relay KM1 and the relay KM2 is 44V-137.5V. In normal operation, when the main line voltage VCC is 88V-DC110V, the safety loop voltage V is about 60.7V-75.85V, and both relays act; when the alarm switch K1 is closed, the safety loop voltage V level is pulled low, and the relay restores the default state. Taking a normally open type voltage relay as an example, when the safety loop system works normally, the alarm switch K1 is switched off, when the main line voltage VCC is 88V-DC110V, the safety loop voltage V is about 60.7V-75.85V, the normally open contacts of the two relays are closed, but when the alarm switch K1 is closed, the level of the safety loop voltage V is pulled down, and the relays are restored to the normally open state. However, since the safety loop system lacks an external indication, when the alarm switch K1 is closed, the fault state of the loop system cannot be intuitively judged at the first time to perform rapid control, so the embodiment further improves the safety loop system of the motor train unit, as shown in fig. 2:
a control system of a safety loop indicator lamp of a motor train unit comprises a safety loop protection circuit and a safety loop control circuit; wherein: the safety loop protection circuit comprises relays KM1 and KM2, an alarm switch K1 and a protection resistor R0; the relays KM1 and KM2 are respectively connected with the alarm switch K1 in parallel and then are connected with a protective resistor R0 in series to be connected to a power supply voltage VCC;
the safety loop control circuit comprises a light emitting diode LED1, an LED2, a voltage regulator tube T1, a switch tube G1, an indicator light LED3, an anti-reflection diode LED4, and protection resistors R1, R2 and R3; the LED1 is connected with the voltage regulator tube T1 in series and then connected with the LED2 in parallel to the two ends of the alarm switch K1, the anode of the LED1 is connected with the cathode of the LED2, and the anode of the LED2 is grounded; the G pole of the switch tube G1 is connected to the cathode of the light-emitting diode LED2, the D pole is connected in series with the indicator light LED3 and the anti-reverse diode LED4 and then is connected to the power supply voltage VCC, and the S pole is grounded; the cathode of the anti-reverse diode LED4 is connected with the indicator light LED3, and the anode is connected with VCC. The protective resistor R1 is connected between the anode of the LED1 and the alarm switch K1 in series for current limiting and voltage reduction; the protective resistor R2 is connected in parallel to two ends of the LED2 to provide a discharge path of the switch tube G1, so that the base of the switch tube G1 is rapidly reduced to 0V; the protective resistor R3 is connected in series between the cathode of the LED2 and the G pole of the switch tube G1, and can limit the base current of the switch tube G1 and inhibit the oscillation generated by the switch tube connection.
In this embodiment, the switch tube may be an MOS tube or an IGBT tube, the relays KM1 and KM2 may be normally open voltage relays or current relays, and the safety loop indicator LED3 may be installed on a panel of a distribution box in a mechanic's room, and may be a single-color or dual-color LED lamp for indicating a change in a state of the safety loop. The loop system is analyzed by taking the example that a switch tube selects an MOS tube, a relay selects a normally-open voltage relay, and a safety loop indicator LED3 selects a monochromatic LED lamp, under a normal working state, an alarm switch K1 is switched off, when a main line voltage VCC is 88V-DC110V, the safety loop voltage V is about 60.7V-75.85V, normally-open contacts of two relays KM1 and KM2 are closed, the safety loop voltage V drives an MOS tube G1 to be conducted through a voltage stabilizing tube T1, and an external indicator LED3 is on; when the alarm switch K1 is closed, the safety loop voltage V is low level, the relays KM1 and KM2 are normally open, the MOS tube G1 is disconnected, and the external indicator light LED3 is turned off. In the embodiment, the light emitting diode LED1 is used for indicating internal faults of the system, and in a normal working state, when the MOS transistor G1 has a fault, the external indicator light LED3 is turned off, and the light emitting diode LED1 is turned on; the light emitting diode LED2 is used for reverse connection protection and indication of the safety loop voltage V and the GND, when the safety loop voltage V is reversely connected with the outside of the GND, the light emitting diode LED2 is conducted to protect the light emitting diode LED1 from being broken down, and the light emitting diode LED2 is lighted to give an alarm; the diode LED4 is used for reverse connection protection of the external main line VCC and GND, when the external main line voltage VCC and GND are connected reversely, the diode LED4 protects the MOS tube G1 from being broken down, and at the moment, the light-emitting diode LED4 lights for alarming.
Therefore, the utility model discloses improve on current EMUs safety loop system's basis, increased safety loop control circuit, through safety loop control circuit, can in time report to the police to various trouble in the system to can judge different fault types simultaneously, carry out fault control. Namely, under the normal working state, the two relays act, the safety loop voltage V drives the switch tube G1 to be conducted through the voltage regulator tube T1, and the external indicator light LED3 is on; when the alarm switch K1 is closed, the safety loop voltage V level is pulled low, the relay restores to the default state, the switch tube G1 is disconnected, and the external indicator light LED3 is turned off. Meanwhile, a plurality of diodes are arranged for fault alarm, the light emitting diode LED1 is used for fault indication inside the system, and in a normal working state, when the switch tube G1 has a fault, the external indicator lamp LED3 is turned off, and the light emitting diode LED1 is turned on; the light emitting diode LED2 is used for reverse connection protection and indication of the safety loop voltage V and the GND, so that when the safety loop voltage V is reversely connected with the outside of the GND, the light emitting diode LED2 is conducted to protect the light emitting diode LED1 from being broken down; the diode LED4 is used for reverse connection protection of the external rail VCC and GND, so that the diode LED4 protects the MOS transistor G1 from breakdown when the external rail voltage VCC and GND are connected reversely. The utility model discloses a safety loop pilot lamp control system design is simple, and maneuverability is strong.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides a EMUs safety loop pilot lamp control system which characterized in that includes: a safety loop protection circuit and a safety loop control circuit;
the safety loop protection circuit comprises relays KM1 and KM2, an alarm switch K1 and a protection resistor R0; the relays KM1 and KM2 are respectively connected with the alarm switch K1 in parallel and then are connected with a protective resistor R0 in series to be connected to a power supply voltage VCC;
the safety loop control circuit comprises a light emitting diode LED1, an LED2, a voltage regulator tube T1, a switch tube G1 and an indicator light LED 3; the LED1 is connected with a voltage regulator tube T1 in series and then connected with the LED2 in parallel to the two ends of the alarm switch K1, the anode of the LED1 is connected with the cathode of the LED2, and the anode of the LED2 is grounded;
the G pole of the switch tube G1 is connected to the cathode of the LED2, the D pole is connected in series with the indicator LED3 and then connected to the power supply voltage VCC, and the S pole is grounded.
2. The motor train unit safety loop indicator lamp control system of claim 1, wherein the safety loop control circuit further comprises protection resistors R1, R2, R3;
the protective resistor R1 is connected between the anode of the LED1 and the alarm switch K1 in series;
the protective resistor R2 is connected with the light-emitting diode LED2 in parallel;
the protection resistor R3 is connected in series between the cathode of the LED2 and the G pole of the switching tube G1.
3. The control system of the indicating lamp of the safety loop of the motor train unit according to claim 1, wherein the safety loop control circuit further comprises an anti-reverse diode LED4, the anti-reverse diode LED4 is connected in series with the indicating lamp LED3, the cathode of the anti-reverse diode LED4 is connected with the indicating lamp LED3, and the anode is connected with VCC.
4. The control system of the safety loop indicator lamp of the motor train unit according to claim 1, wherein the switching tube is an MOS tube or an IGBT.
5. The control system of the indicator lamp of the safety loop of the motor train unit according to claim 1, wherein the relays KM1 and KM2 are voltage relays or current relays.
6. The motor train unit safety loop indicator lamp control system of claim 5, wherein the relay is of a normally open type.
7. The motor train unit safety loop indicator lamp control system of claim 1, wherein the indicator lamp LED3 is mounted on a panel of a power distribution box in a mechanic's room and adopts a single-color or double-color LED lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020682648.2U CN211580251U (en) | 2020-04-28 | 2020-04-28 | EMUs safety loop pilot lamp control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020682648.2U CN211580251U (en) | 2020-04-28 | 2020-04-28 | EMUs safety loop pilot lamp control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211580251U true CN211580251U (en) | 2020-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020682648.2U Active CN211580251U (en) | 2020-04-28 | 2020-04-28 | EMUs safety loop pilot lamp control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211580251U (en) |
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2020
- 2020-04-28 CN CN202020682648.2U patent/CN211580251U/en active Active
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