Automatic awakening dormancy device and method, power supply and rail transit vehicle

Abstract

The invention discloses an automatic awakening dormancy device and method, a power supply and a rail transit vehicle, and relates to the technical field of locomotive power supply control. The device comprises a power input switch, a control module, a first relay, a second relay and a contactor, a first end of the power input switch is connected with an output end of a power supply, a second end of the power input switch is connected with a power input end of the control module, and a first output end and a second output end of the control module are respectively connected with coils of the first relay and the second relay. A coil of the contactor, a normally open contact of the first relay and a normally closed contact of the second relay form a series branch, the series branch is connected with the second end of the power input switch, and the first normally open contact 1 of the contactor is connected to the two ends of a power output switch of the power supply in parallel. And a second normally open contact of the contactor is connected in parallel with two ends of the normally open contact of the first relay. According to the invention, the automatic awakening and dormancy functions of the load are realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of locomotive power supply control, and in particular relates to an automatic sleep awakening device, method, power supply and rail transit vehicle. Background Art

[0002] At present, the control circuit of the electric locomotive is powered by a control power cabinet, and the power on and off of the control circuit are controlled by the driver manually operating the power output switch of the control power cabinet, and the degree of automation is low. Summary of the invention

[0003] The object of the present invention is to provide an automatic awakening dormant device, method, power supply and rail transit vehicle to solve the problem that the power on and off of the control circuit of the existing electric locomotive is controlled by manually operating the power switch and the automation level is low.

[0004] The present invention solves the above technical problems through the following technical solutions: an automatic awakening device for sleeping, comprising:

[0005] A power input switch, a first end of which is used to connect to an output end of a power supply;

[0006] A control module, whose power input terminal is connected to the second terminal of the power input switch; the control module is used to control the first relay or the second relay to be energized according to the received instruction, and then control the contactor to be energized or de-energized to achieve wake-up or sleep;

[0007] a first relay and a second relay, wherein the coil of the first relay is connected to the first output terminal of the control module, and the coil of the second relay is connected to the second output terminal of the control module;

[0008] And a contactor, wherein a series branch is formed by the coil of the contactor, the normally open contact of the first relay and the normally closed contact of the second relay, the series branch is connected to the second end of the power input switch, the first normally open contact of the contactor is connected in parallel to the two ends of the power output switch of the power supply, and the second normally open contact of the contactor is connected in parallel to the two ends of the normally open contact of the first relay.

[0009] The power input end of the load is connected to the power supply through the power output switch. When the load needs to use the automatic wake-up and sleep function, the power output switch is disconnected and the power input switch is closed to automatically wake up the sleep device and power it on. When the control module receives the wake-up command, the first output end of the control module outputs a pulse signal, the coil of the first relay is energized, the normally open contact of the first relay is closed, the series branch is connected, the coil of the contactor is energized, and then the first normally open contact of the contactor is closed to supply power to the load, realizing load wake-up. The second normally open contact of the contactor is closed to keep the series branch connected, and then the power supply keeps supplying power to the load.

[0010] When the control module receives the sleep command, the second output terminal of the control module outputs a pulse signal, the coil of the second relay is energized, the normally closed contact of the second relay is disconnected, the series branch is disconnected, the coil of the contactor loses power, and then the first normally open contact and the second normally open contact of the contactor are disconnected, the power supply cannot supply power to the load, and the load is automatically sleep.

[0011] Furthermore, the first relay and the second relay are both intermediate relays.

[0012] Furthermore, the device also includes a third relay and a fourth relay; the coils of the third relay and the fourth relay are respectively connected to the second end of the power input switch, the two ends of the normally open contact of the third relay are respectively connected to the second end of the power input switch and the first input end of the control module, and the two ends of the normally open contact of the fourth relay are respectively connected to the second end of the power input switch and the second input end of the control module.

[0013] When the output voltage of the power supply is lower than the undervoltage threshold, the coil of the third relay loses power, the normally open contact of the third relay is disconnected, the control module detects the undervoltage state, and issues a prompt;

[0014] When the output voltage of the power supply is lower than the low-voltage threshold, the coil of the fourth relay loses power, the normally open contact of the fourth relay is disconnected, and the control module detects a low-voltage state. At this time, even if a wake-up command is received, no pulse signal will be output at the first output end of the control module, and the power supply will not supply power to the load, thereby avoiding power supply feeding.

[0015] Furthermore, the power source is a battery.

[0016] Furthermore, the command received by the control module comes from a ground dispatching system or a handheld terminal.

[0017] Based on the same concept, the present invention provides a power supply, wherein the automatic sleep awakening device as described above is provided at the output end of the power supply.

[0018] Based on the same concept, the present invention provides a rail transit vehicle, wherein the vehicle comprises the automatic sleep awakening device as described above or the power supply as described above.

[0019] Based on the same concept, the present invention provides a method for automatically waking up a load from sleep mode, wherein the power input end of the load is connected to the power supply via a power output switch, and the automatic waking up from sleep mode device as described above is provided at the output end of the power supply, and the method comprises:

[0020] A wake-up command or a sleep command is received;

[0021] According to the wake-up instruction, the coil of the first relay is controlled to be energized, the normally open contact of the first relay is closed, the contactor is energized, the first normally open contact and the second normally open contact of the contactor are closed, and the power supply supplies power to the load, so that the load is automatically awakened;

[0022] Or, according to the sleep instruction, the coil of the second relay is energized, the normally closed contact of the second relay is disconnected, the contactor loses power, the first normally open contact and the second normally open contact of the contactor are disconnected, the power supply does not supply power to the load, and the load is automatically sleep.

[0023] Furthermore, the method further comprises:

[0024] Acquire a power supply state; wherein the power supply state includes an undervoltage state and / or a low voltage state;

[0025] When the wake-up instruction is received and the power supply is in an undervoltage state, while the load is automatically awakened according to the wake-up instruction, an undervoltage prompt signal is sent according to the undervoltage state of the power supply;

[0026] When the wake-up instruction is received and the power supply is in a low voltage state, the load automatic wake-up function is not implemented.

[0027] Further, the obtaining of the power supply status includes:

[0028] When the output voltage of the power supply is lower than the undervoltage threshold, the coil of the third relay loses power, the normally open contact of the third relay is disconnected, and the control module obtains an undervoltage status signal;

[0029] When the output voltage of the power supply is lower than the low voltage threshold, the coil of the fourth relay loses power, the normally open contact of the fourth relay is disconnected, and the control module obtains a low voltage state signal;

[0030] Among them, the low voltage threshold is smaller than the under voltage threshold.

[0031] Beneficial Effects

[0032] Compared with the prior art, the advantages of the present invention are:

[0033] The automatic awakening and sleeping device provided by the present invention can realize the automatic awakening or sleeping function of the load, that is, realize the automatic power on and off of the control circuit of the electric locomotive, without the need for manual participation in the power output switch control of the power supply cabinet, thereby improving the automation degree of power supply control.

[0034] By adding undervoltage relays (ie, the third relay and the fourth relay), continuous monitoring of the undervoltage state of the power supply is achieved, effectively avoiding power supply feeding problems caused by putting the power supply into use when the power supply is undervoltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 is a circuit schematic diagram of an automatic sleep awakening device according to an embodiment of the present invention;

[0037] Figure 2 It is a flow chart of a method for automatically waking up a dormant load in an embodiment of the present invention. DETAILED DESCRIPTION

[0038] The following is a clear and complete description of the technical solutions in the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The technical solution of the present application is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0040] like Figure 1 As shown, an automatic awakening hibernation device provided by an embodiment of the present invention includes a power input switch S2, a control module, a first relay, a second relay and a contactor; the first end of the power input switch S2 is connected to the output end of the power supply, the second end of the power input switch S2 is connected to the power input end VCC of the control module, the first output end OUT1 and the second output end OUT2 of the control module are respectively connected to the coils of the first relay and the second relay, and a series branch is formed by the coil of the contactor, the normally open contact K1 of the first relay and the normally closed contact K2 of the second relay, and the series branch is connected to the second end of the power input switch S2, the first normally open contact K11 of the contactor is connected in parallel to the two ends of the power output switch S1 of the power supply, and the second normally open contact K22 of the contactor is connected in parallel to the two ends of the normally open contact K1 of the first relay.

[0041] The output end of the power supply is connected to the load through the power output switch S1, so that the power supply supplies power to the load. When the load needs to use the automatic wake-up and sleep function, the power output switch S1 is disconnected, and the power input switch S2 is closed to automatically wake up the sleep device and power it on. When the control module receives the wake-up command, the first output end OUT1 of the control module outputs a pulse signal, the coil of the first relay is energized, and the normally open contact K1 of the first relay is closed, so that the series branch is connected, the coil of the contactor is energized, and then the first normally open contact K11 of the contactor is closed to supply power to the load, realizing automatic wake-up of the load, and the second normally open contact K22 of the contactor is closed to keep the series branch connected, so that the power supply keeps supplying power to the load.

[0042] When the control module receives the sleep command, the second output terminal OUT2 of the control module outputs a pulse signal, the coil of the second relay is energized, and the normally closed contact K2 of the second relay is disconnected, so that the series branch is disconnected, the coil of the contactor loses power, and then the first normally open contact K11 and the second normally open contact K22 of the contactor are disconnected, and the power supply cannot supply power to the load, so that the load automatically sleeps.

[0043] In a specific embodiment of the present invention, the automatic awakening hibernation device also includes a third relay and a fourth relay; the coils of the third relay and the fourth relay are respectively connected to the second end of the power input switch S2, the two ends of the normally open contact K3 of the third relay are respectively connected to the second end of the power input switch S2 and the first input end IN1 of the control module, and the two ends of the normally open contact K4 of the fourth relay are respectively connected to the second end of the power input switch S2 and the second input end IN2 of the control module.

[0044] The third relay is used to implement power supply undervoltage detection. When the output voltage of the power supply is lower than the undervoltage threshold, the coil of the third relay loses power, the normally open contact K3 of the third relay is disconnected, the control module detects the undervoltage state and issues a prompt; when the output voltage of the power supply is higher than or equal to the undervoltage threshold, the coil of the third relay is energized, the normally open contact K3 of the third relay is closed, and the control module detects that the power supply is not in an undervoltage state.

[0045] The fourth relay is used to implement power supply low voltage detection. When the output voltage of the power supply is lower than the low voltage threshold, the coil of the fourth relay loses power, the normally open contact K4 of the fourth relay is disconnected, and the control module detects a low voltage state. At this time, even if a wake-up command is received, no pulse signal will be output at the first output terminal OUT1 of the control module. The power supply does not supply power to the load, and the load cannot be automatically awakened, thereby avoiding power supply feeding. When the output voltage of the power supply is higher than or equal to the low voltage threshold, the coil of the fourth relay is energized, the normally open contact K4 of the fourth relay is closed, and the control module detects that the power supply is not in a low voltage state.

[0046] In this embodiment, the undervoltage threshold is 88V and the low voltage threshold is 77V.

[0047] In a specific implementation of the present invention, the first relay, the second relay, the third relay and the fourth relay are all intermediate relays.

[0048] In a specific embodiment of the present invention, the power source is a battery.

[0049] In a specific implementation of the present invention, the instruction received by the control module comes from a ground dispatch system or a handheld terminal.

[0050] When the automatic awakening and sleeping device of the present invention is applied to the control circuit of an electric locomotive, the power supply is the control power supply and the load is the control circuit. The automatic awakening and sleeping device can realize automatic awakening or sleeping of the load; at the same time, the state detection of the control power supply can be realized through the third relay and the fourth relay, avoiding the problem of power supply caused by the control power supply being put into use when it is in a low-voltage state.

[0051] The present invention ensures the safe and reliable design of the power supply circuit of the electric locomotive control circuit, controls the power on and off of the locomotive control circuit by automatically waking up the sleep device, and realizes reliable automatic power on and off of the locomotive control circuit according to the wake-up command and the sleep command; at the same time, the undervoltage and low voltage of the control power supply are continuously monitored, effectively improving the automation level of the locomotive operation.

[0052] Although not shown, the present invention further provides a power supply, and the automatic sleep awakening device in the embodiment of the present application is provided at the output end of the power supply.

[0053] Although not shown, the present invention further provides a rail transit vehicle, which includes the automatic sleep awakening device or power supply in the embodiment of the present application.

[0054] Figure 2 The flowchart of the method for automatically waking up a dormant load of the present invention is shown. The power input terminal VCC of the load is connected to the power supply through the power output switch S1. The output terminal of the power supply is provided with the automatic waking up the dormant device of the present application. Figure 2 As shown, the load automatic awakening sleep method of the present invention comprises the following steps:

[0055] In step 1, the control module receives a wake-up instruction or a sleep instruction sent from a ground dispatch system or a handheld terminal.

[0056] At step 2, when the instruction received by the control module is a wake-up instruction, the control module outputs a pulse signal at its first output terminal OUT1 according to the wake-up instruction. The pulse signal energizes the coil of the first relay, closes the normally open contact K1 of the first relay, connects the series branch, energizes the contactor, closes the first normally open contact K11 of the contactor, and supplies power to the load, realizing automatic wake-up of the load. The second normally open contact K22 of the contactor is closed, so that the series branch remains connected, and the power supply continues to supply power to the load.

[0057] When the instruction received by the control module is a sleep instruction, the control module controls the coil of the second relay to be energized according to the sleep instruction, the normally closed contact K2 of the second relay is disconnected, the series branch is disconnected, the contactor loses power, the first normally open contact K11 and the second normally open contact K22 of the contactor are disconnected, the power supply cannot supply power to the load, and the load automatically sleeps.

[0058] In a specific embodiment of the present invention, the load automatic awakening method also includes power supply undervoltage and low voltage detection, specifically including:

[0059] The control module obtains the power status;

[0060] When a wake-up command is received and the power supply is in an undervoltage state, while the load is automatically awakened according to the wake-up command (see step 2 for the specific implementation process), the control module sends an undervoltage prompt signal according to the undervoltage state of the power supply;

[0061] When receiving a wake-up instruction and the power supply is in a low-voltage state, the control module does not output a pulse signal at its first output terminal OUT1 and does not implement the load automatic wake-up function, thereby avoiding the power supply being put into use while in a low-voltage state, thereby avoiding power supply feeding.

[0062] What is disclosed above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or modifications within the technical scope disclosed in the present invention, which should be covered within the protection scope of the present invention.

Claims

1. An automatic awakening device for sleeping, characterized in that: The device comprises: A power input switch, a first end of which is used to connect to an output end of a power supply; A control module, whose power input terminal is connected to the second terminal of the power input switch; the control module is used to control the first relay or the second relay to be energized according to the received instruction, and then control the contactor to be energized or de-energized to achieve wake-up or sleep; a first relay and a second relay, wherein the coil of the first relay is connected to the first output terminal of the control module, and the coil of the second relay is connected to the second output terminal of the control module; And a contactor, wherein a series branch is formed by the coil of the contactor, the normally open contact of the first relay and the normally closed contact of the second relay, the series branch is connected to the second end of the power input switch, the first normally open contact of the contactor is connected in parallel to the two ends of the power output switch of the power supply, and the second normally open contact of the contactor is connected in parallel to the two ends of the normally open contact of the first relay.

2. The automatic awakening device according to claim 1, characterized in that: The first relay and the second relay are both intermediate relays.

3. The automatic awakening device according to claim 1, characterized in that: The device also includes a third relay and a fourth relay; the coils of the third relay and the fourth relay are respectively connected to the second end of the power input switch, the two ends of the normally open contact of the third relay are respectively connected to the second end of the power input switch and the first input end of the control module, and the two ends of the normally open contact of the fourth relay are respectively connected to the second end of the power input switch and the second input end of the control module.

4. The automatic awakening device according to claim 1, characterized in that: The power source is a battery.

5. The automatic awakening device according to any one of claims 1 to 4, characterized in that: The command received by the control module comes from a ground dispatching system or a handheld terminal.

6. A power supply, characterized in that: An automatic sleep awakening device as claimed in any one of claims 1 to 5 is provided at the output end of the power supply.

7. A rail transit vehicle, characterized in that: The vehicle comprises the automatic awakening sleep device according to any one of claims 1 to 5 or the power supply according to claim 6.

8. A method for automatically waking up a dormant load, wherein the power input terminal of the load is connected to the power supply through a power output switch, characterized in that: An automatic sleep awakening device as claimed in any one of claims 1 to 5 is provided at the output end of the power supply, and the method comprises: A wake-up command or a sleep command is received; According to the wake-up instruction, the coil of the first relay is controlled to be energized, the normally open contact of the first relay is closed, the contactor is energized, the first normally open contact and the second normally open contact of the contactor are closed, and the power supply supplies power to the load, so that the load is automatically awakened; Or, according to the sleep instruction, the coil of the second relay is energized, the normally closed contact of the second relay is disconnected, the contactor loses power, the first normally open contact and the second normally open contact of the contactor are disconnected, the power supply does not supply power to the load, and the load is automatically dormant.

9. The method for automatically waking up a dormant load according to claim 8, characterized in that: The method further comprises: Acquire a power supply state; wherein the power supply state includes an undervoltage state and / or a low voltage state; When the wake-up instruction is received and the power supply is in an undervoltage state, while the load is automatically awakened according to the wake-up instruction, an undervoltage prompt signal is sent according to the undervoltage state of the power supply; When the wake-up instruction is received and the power supply is in a low voltage state, the load automatic wake-up function is not implemented.

10. The method for automatically waking up a dormant load according to claim 9, characterized in that: The obtaining of the power supply status includes: When the output voltage of the power supply is lower than the undervoltage threshold, the coil of the third relay loses power, the normally open contact of the third relay is disconnected, and the control module obtains an undervoltage status signal; When the output voltage of the power supply is lower than the low voltage threshold, the coil of the fourth relay loses power, the normally open contact of the fourth relay is disconnected, and the control module obtains a low voltage state signal; Among them, the low voltage threshold is smaller than the under voltage threshold.

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