CN109541974B - Plug connector control circuit - Google Patents
Plug connector control circuit Download PDFInfo
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- CN109541974B CN109541974B CN201811418235.7A CN201811418235A CN109541974B CN 109541974 B CN109541974 B CN 109541974B CN 201811418235 A CN201811418235 A CN 201811418235A CN 109541974 B CN109541974 B CN 109541974B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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Abstract
The invention discloses a plug connector control circuit, which comprises an overcurrent protection circuit, an energy conversion circuit, a primary control circuit, a secondary control circuit and an output circuit, wherein the overcurrent protection circuit is connected with the energy conversion circuit; the overcurrent protection circuit ensures that an external power supply is not influenced when the current of the second-stage control circuit is overhigh, the overcurrent protection circuit can automatically recover after the abnormality disappears, the energy conversion circuit converts the input voltage of the external power supply and then supplies the converted input voltage to the self-locking relay, the first-stage control circuit generates a control signal by an external or manual switch to control the self-locking relay to work, the second-stage control circuit is controlled by the first-stage control circuit to generate a direct current motor control signal in the plug-in connector, and then the plug/socket is controlled to rotate forwards or backwards to realize the plug/socket plugging and. The invention adopts the overcurrent protection circuit, thereby avoiding the influence of the short circuit of the control circuit on the working voltage range of the whole circuit caused by the influence of an external power supply, and ensuring that the two-stage control circuit can control the motor to rotate forward and backward to complete the plugging and the separation of the plug/the socket through a simple pulse signal.
Description
Technical Field
The invention belongs to the technical field of plug connectors of carrier rockets, and particularly relates to a plug connector control circuit.
Background
The automation degree of the carrier rocket in active service in China is still low in the processes of filling and launching preparation of a launching site, and particularly a large amount of manual work is still needed in many links such as filling before rocket launching, state preparation before launching and the like, and the system safety risk still exists. In countries such as the United states, the former Soviet Union, Brazil and the like, disastrous accidents that rockets explode at towers to cause a great amount of casualties occur, and the training is painful. In 2016, 9 months, explosion occurs in a static test after filling of a Farken 9 rocket, and fortunately, due to the adoption of a plurality of automatic technologies, unattended operation at the front end of launching is realized, and casualties are not caused.
The automatic filling launching technology can greatly improve the rocket automatic testing launching level in China, effectively change the technical current situations of low work automation degree, more staff guarantee and low operation efficiency of rocket launching sites in China, improve the rocket launching reliability, the staff safety and the launching efficiency, and further improve the intrinsic safety.
After the current work items of the launching process and the launching site are comprehensively combed, the key factors for restricting the launching automation of the electrical system are mainly the operation of a short-circuit protection plug of initiating explosive devices, so that the development of related technical countermeasures is urgently needed.
The short-circuit protection mode of the initiating explosive device of the active carrier rocket is that a total short-circuit protection socket is arranged on a resistance box of each section, positive and negative buses for supplying power to all initiating explosive devices in the section are led to a plug, and the positive and negative buses are connected together in a short circuit mode through a matched total short-circuit protection plug, so that the initiating explosive devices are protected, and the safety of the initiating explosive devices is ensured. The typical circuit is shown in figure 1, wherein XP1 is a total short-circuit protection socket on a resistor box, H1 and H2 are initiating explosive devices, and + B and-B are positive and negative buses for supplying power to the initiating explosive devices respectively, in the injection stage before injection, XP1 is connected with a total short-circuit protection plug, 1-4 points in the plug are all in short circuit, protection on H1 and H2 is achieved, and before the system is powered on, the XP1 short-circuit protection plug is taken down to execute a launching flight task.
In addition, when the launching process is abnormally stopped, an operator needs to arrow the firing line to recover the connection of the short-circuit protection plug, so that the safety of initiating explosive devices is ensured, higher potential safety hazards are generated, and the requirement of automatic filling launching cannot be met.
Disclosure of Invention
The technical problem solved by the invention is as follows: the defects of the prior art are overcome, the plug connector control circuit is provided, the circuit is simple to realize and high in safety, and the carrier rocket automatic filling launching is realized by matching with the plug connector.
The purpose of the invention is realized by the following technical scheme: a plug connector control circuit comprising: the energy conversion circuit comprises an overcurrent protection circuit, an energy conversion circuit, a primary control circuit and a secondary control circuit; the overcurrent protection circuit ensures that an external power supply is not influenced when the secondary control circuit is in short circuit, and can automatically recover after the abnormality disappears; the energy conversion circuit converts the input voltage of the external power supply and then supplies the converted input voltage to the self-locking relay of the primary control circuit; the first-stage control circuit generates a control signal by an external control signal or a manual switch so as to control the self-locking relay of the first-stage control circuit to work; the second-stage control circuit is controlled by the first-stage control circuit to generate a direct current motor control signal in the plug connector, and then the motor is controlled to rotate forwards or backwards.
In the plug-in connector control circuit, one end of the overcurrent protection circuit is connected with the positive end of an external power supply; the energy conversion circuit is a DC-DC converter A4, wherein an energy input pin 1 of a DC-DC converter A4 is connected with the overcurrent protection circuit, an energy input pin 2 is connected with the negative end of an external power supply through a plug connector A5, and an energy output pin 3 and an energy output pin 4 are both connected with the primary control circuit; one end of the primary control circuit is connected with the control signal, and the other end of the primary control circuit is respectively connected with the energy conversion circuit and the secondary control circuit; the secondary control circuit is a relay A3, wherein the 1 gear and the 2 gear of the relay A3 are switched by a switch K4, the 3 gear and the 4 gear of the relay A3 are switched by a switch K5, the 1 gear of the relay A3 is connected with one end of the motor A6 by an 8# contact piece (disconnected after being plugged in place) of a plug-in connector A5, the 2 gear of the relay A3 is connected with the other end of the motor A6 by a 10# contact piece (normally open) of a plug-in connector A5, the 3 gear of the relay A3 is connected with the 2 gear of the relay A3, the 4 gear of the relay A3 is connected with one end of the motor A6 by a 9# contact piece (disconnected after being disconnected in place) of a plug-in connector A5, a coil K3 of the relay A3 is connected with an overcurrent protection circuit, the switch K4 is connected with an energy input pin 2 of the DC-DC converter A4, and the switch K5
In the above plug connector control circuit, the overcurrent protection circuit includes a resettable fuse F1 and a diode D1; wherein, the recoverable fuse F1 is connected with the diode D1; one end of the recoverable fuse F1 is connected to the positive voltage terminal, the diode D1 is connected to the coil K3 of the relay A3, and the diode D1 is connected to the switch K5.
In the plug connector control circuit, the primary control circuit comprises a photoelectric coupler A1, a self-locking relay A2 and a manual switch A7, wherein the photoelectric coupler A1 is connected with a pin 3 of a self-locking relay A2 through the manual switch A7, the photoelectric coupler A1 is connected with a pin 4 of the self-locking relay A2, a pin 1 of the self-locking relay A2 is connected with an energy output pin 3 of a DC-DC converter A4, and a pin 2 of the self-locking relay A2 is connected with an energy output pin 4 of a DC-DC converter A4; one end of a photoelectric coupler A1 is connected with the positive end of a control signal, the other end of the photoelectric coupler A1 is connected with the negative end of the control signal, one end of a switch K6 of a self-locking relay A2 is connected with a coil K3 of a relay A3, and the other end of a switch K6 of a self-locking relay A2 is connected with an energy input pin 2 of a DC-DC converter A4;
the photoelectric coupler A1 receives a control signal provided by the outside through the plug-in connector A5, outputs the control signal to the 3 pin and the 4 pin of the self-locking relay A2 after being isolated, and can also generate a pulse signal through the manual switch A7 to output the pulse signal to the 3 pin and the 4 pin of the A2 to serve as the control signal of the self-locking relay A2.
In the plug connector control circuit, the photocoupler A1 is Toshiba TLP 521-1G.
In the plug connector control circuit, the model of the self-locking relay A2 is YYYLOCK-1.
In the plug connector control circuit, the type of the relay A3 is M2YN-GS-24VDC of ohm dragon, and the relay A is a two-position double-contact relay.
In the plug connector control circuit, the DC-DC converter a4 is an LM2596HVS adjustable voltage reduction module, and the output voltage is adjusted to 5V.
In the above plug connector control circuit, the voltage is 28V.
In the above plug connector control circuit, the pulse amplitude of the control signal is 28V.
In the above plug connector control circuit, the pulse width of the control signal is 20 ms.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention can remotely and electrically control the plugging and the separation of the plugging and unplugging connector, avoids the link of manually plugging the short-circuit protection plug, can automatically plug after the launch is delayed, and is suitable for the automatic filling launch of the carrier rocket;
(2) the invention adopts a two-stage control circuit of the latching relay and the relay, only one pulse signal is needed to control the positive/negative rotation of the motor, the control mode is simple and reliable, and the requirement of external resources is less;
(3) the invention fully utilizes the internal contact element of the plug connector as a circuit element, adopts the signal indication contact element to realize the automatic power-off of the motor, ensures that the connector is not damaged, and ensures the circuit safety;
(4) the invention adds overcurrent protection measures to the power supply branch of the circuit, does not influence the work of an external power supply under the condition of short circuit of the circuit, ensures the normal work of the external circuit, and can automatically recover after the abnormality disappears.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic diagram of a prior art primer protection circuit for a launch vehicle;
fig. 2 is a schematic diagram of a plug connector control circuit according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The embodiment provides a plug connector control circuit, which comprises an overcurrent protection circuit, an energy conversion circuit, a primary control circuit and a secondary control circuit, wherein the motor can be controlled to rotate forwards and backwards through a pulse control signal, so that the plug/socket of the plug connector can be plugged and separated. The overcurrent protection circuit ensures that an external power supply is not influenced when the second-stage control circuit is in short circuit, the overcurrent protection circuit can automatically recover after the abnormality disappears, the energy conversion circuit converts the input voltage of the external power supply and then supplies the converted input voltage to the self-locking relay, the first-stage control circuit generates a control signal by an external or manual switch to control the self-locking relay to work, the second-stage control circuit is controlled by the first-stage control circuit to generate a direct current motor control signal in the plug-in connector, and then the plug/socket is controlled to rotate forwards or backwards to realize the plug/socket plugging and. The invention adopts the overcurrent protection circuit, thereby avoiding the influence of the short circuit of the control circuit on the working voltage range of the whole circuit caused by the influence of an external power supply, and ensuring that the two-stage control circuit can control the motor to rotate forward and backward to complete the plugging and the separation of the plug/the socket through a simple pulse signal.
As shown in fig. 2, the overcurrent protection circuit includes a recoverable fuse F1 and a diode D1; wherein, the recoverable fuse F1 is connected with the diode D1; one end of the recoverable fuse F1 is connected to the positive voltage terminal, the diode D1 is connected to the coil K3 of the relay A3, and the diode D1 is connected to the switch K5.
The energy conversion circuit comprises a DC-DC converter A4, wherein the DC-DC converter A4 comprises an energy input pin 1, an energy input pin 2, an energy output pin 3 and an energy output pin 4, the energy input pin 1 is connected with the overcurrent protection circuit, the energy input pin 2 is connected with a voltage negative terminal through a plug-in connector A5, and the energy output pin 3 and the energy output pin 4 are both connected with a primary control circuit;
one end of the primary control circuit is connected with the positive end of the control signal, and the other end of the primary control circuit is connected with the negative end of the control signal;
the primary control circuit comprises a photoelectric coupler A1, a self-locking relay A2 and a manual switch A7, wherein the photoelectric coupler A1 is connected with A3 pin of the self-locking relay A2 through the manual switch A7, the photoelectric coupler A1 is connected with a4 pin of the self-locking relay A2, a1 pin of the self-locking relay A2 is connected with an energy output pin 3 of a DC-DC converter A4, and a2 pin of the self-locking relay A2 is connected with an energy output pin 4 of a DC-DC converter A4; one end of the photoelectric coupler A1 is connected with the positive end of the control signal, the other end of the photoelectric coupler A1 is connected with the negative end of the control signal,
the photoelectric coupler A1 receives a voltage pulse signal provided by the outside through the plug-in connector A5, the voltage pulse signal is isolated and then output to the 3 pin and the 4 pin of the self-locking relay A2, and a pulse signal can be generated by the manual switch A7 and output to the 3 pin and the 4 pin of the A2 to serve as a control signal of the self-locking relay A2;
the secondary control circuit comprises a relay A3, wherein the 1 gear and the 2 gear of the relay A3 are switched by a switch K4, the 3 gear and the 4 gear of the relay A3 are switched by a switch K5, the 1 gear of the relay A3 is connected with one end of the motor A6 by a contact 8# of a plug-in connector A5 (an open circuit after being plugged in place), the 2 gear of the relay A3 is connected with the other end of the motor A6 by a contact 10# of a plug-in connector A5 (a normally-on circuit), the 3 gear of the relay A3 is connected with the 2 gear of the relay A3, the 4 gear of the relay A3 is connected with one end of the motor A6 by a contact 9# of the plug-in connector A5 (an open circuit after being plugged in place), a coil K3 of the relay A3 is connected with an overcurrent protection circuit, the switch K4 is connected with an energy input pin 2 of the DC-DC converter A4, and the switch K5 is.
The plug connector contact elements are divided into three types, namely a normally-on contact element, a signal indication contact element and a common contact element, wherein the signal indication contact elements are divided into two types, namely a separation in-place indication contact element and an insertion in-place indication contact element.
Wherein the photoelectric coupler A1 is TLP521-1G of Toshiba; YYLLOCK-1 is selected as the self-locking relay A2, and the power supply voltage is 5V; the relay A3 is a two-position double-contact relay which is M2YN-GS-24VDC of ohm dragon; the DC-DC converter A4 adopts an LM2596HVS adjustable voltage reduction module, and the output voltage is adjusted to be 5V. The plug connector A5 is YF35-117 of Hangzhou space electronic technology GmbH.
The circuit supply voltage is 28V. The control pulse amplitude is 28V and the pulse width is 20 ms.
After the circuit is electrified, a DC-DC converter A4 generates a 5V secondary power supply to supply power to a latching relay A2, a2 relay K2 is powerless in a default state, a contact is disconnected, the relay A3 is in an initial state, the 1 point and the 3 point correspond to the contact to be connected, if a plug/socket is in a separated state, a signal of a plug connector A5 indicates that a contact 8# is connected, a signal indicates that a contact 9# is disconnected, the current direction of a motor A6 is from bottom to top, 28V of external power supply drives a motor to rotate forward, the plug/socket is plugged until the signal indicates that the contact 8# is disconnected and the contact 9# is connected after complete plugging, so that no electric circuit of the motor A6 stops rotating, plugging action of the plug connector is completed, if the plug/socket is in a plugging state, the motor does not act, namely the state shown in FIG. 2 is the default plugging state.
When a pulse control signal is generated outside or the manual restorable switch A7 is pressed down, the coil K2 of the latching relay A2 is electrified, the contact is connected, the coil K3 of the relay A3 is electrified, the contact acts, the point 2 and the point 4 correspond to the contact to be connected, the current direction of the motor A6 is from top to bottom, the external power supply 28V drives the motor to rotate reversely, the plug/seat is separated, the signal indicates that the contact element 8# is connected and the contact element 9# is disconnected after the complete separation, and therefore the motor A6 does not have an electric loop to stop rotating, and the separation action of the plug connector is completed. When a pulse signal is generated outside or the manual switch A7 is pressed down again, the contact of the self-locking relay A2 is disconnected, the plug connector is plugged again, and the operation is repeated in such a way, so that the plugging and the separation control of the plug connector are realized.
When the contact of the relay A3 is abnormal, when the contacts corresponding to the 2 and 3 points are simultaneously connected, the positive and negative buses of the input power supply 28V are short-circuited, the recoverable fuse F1 is blown, the external power supply is not affected, and the F1 can recover automatically after the abnormality disappears.
The insertion and separation of the remote electric control plug connector can be realized, the link of manually pulling out the short-circuit protection plug is avoided, the plug connector can be automatically inserted after the launch is delayed, and the carrier rocket automatic filling launch device is suitable for the automatic filling launch of a carrier rocket; in the embodiment, a two-stage control circuit of the self-locking relay and the relay is adopted, the forward/reverse rotation of the motor can be controlled only by one pulse signal, the control mode is simple and reliable, and the requirement on external resources is low; according to the embodiment, the internal contact element of the plug connector is fully utilized as a circuit element, and the signal indication contact element is adopted to realize automatic power-off of the motor, so that the connector is not damaged, and the circuit safety is ensured; this embodiment adds the overcurrent protection measure to circuit power supply branch road, does not influence external power source work under the condition of circuit short circuit, ensures that external circuit normally works, and can resume by oneself after disappearance unusually.
The above-described embodiments are merely preferred embodiments of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.
Claims (9)
1. A plug connector control circuit, comprising: the energy conversion circuit comprises an overcurrent protection circuit, an energy conversion circuit, a primary control circuit and a secondary control circuit; wherein the content of the first and second substances,
the overcurrent protection circuit ensures that an external power supply is not influenced when the secondary control circuit is in short circuit, and can automatically recover after the abnormality disappears;
the energy conversion circuit converts the input voltage of the external power supply and then supplies the converted input voltage to the self-locking relay of the primary control circuit;
the first-stage control circuit generates a control signal by an external control signal or a manual switch so as to control the self-locking relay of the first-stage control circuit to work;
the second-stage control circuit is controlled by the first-stage control circuit to generate a direct current motor control signal in the plug connector so as to control the motor to rotate forwards or backwards;
one end of the overcurrent protection circuit is connected with the positive end of the external power supply;
the energy conversion circuit is a DC-DC converter A4, wherein an energy input pin 1 of a DC-DC converter A4 is connected with the overcurrent protection circuit, an energy input pin 2 is connected with the negative end of an external power supply through a plug connector A5, and an energy output pin 3 and an energy output pin 4 are both connected with the primary control circuit;
one end of the primary control circuit is connected with the control signal, and the other end of the primary control circuit is respectively connected with the energy conversion circuit and the secondary control circuit;
the secondary control circuit is a relay A3, wherein the 1 st gear and the 2 nd gear of the relay A3 are switched by a switch K4, the 3 rd gear and the 4 th gear of the relay A3 are switched by a switch K5, the 1 st gear of the relay A3 is connected with one end of the motor A6 through an 8# contact of a plug connector A5, the 2 nd gear of the relay A3 is connected with the other end of the motor A6 through a 10# contact of a plug connector A5, the 3 rd gear of the relay A3 is connected with the 2 nd gear of the relay A3, the 4 th gear of the relay A3 is connected with one end of the motor A6 through a 9# contact of a plug connector A5, a coil K3 of the relay A3 is connected with an overcurrent protection circuit, a switch K4 is connected with an energy input pin 2 of a DC-DC converter A4, and a switch K5 is connected with the.
2. The plug connector control circuit according to claim 1, wherein: the over-current protection circuit comprises a recoverable fuse F1 and a diode D1; wherein, the recoverable fuse F1 is connected with the diode D1; one end of the resettable fuse F1 is connected to the positive terminal of the external power supply, the diode D1 is connected to the coil K3 of the relay A3, and the diode D1 is connected to the switch K5.
3. The plug connector control circuit according to claim 1, wherein: the primary control circuit comprises a photoelectric coupler A1, a self-locking relay A2 and a manual switch A7, wherein the photoelectric coupler A1 is connected with A3 pin of a self-locking relay A2 through the manual switch A7, the photoelectric coupler A1 is connected with a4 pin of the self-locking relay A2, a1 pin of the self-locking relay A2 is connected with an energy output pin 3 of a DC-DC converter A4, and a2 pin of the self-locking relay A2 is connected with an energy output pin 4 of a DC-DC converter A4; one end of a photoelectric coupler A1 is connected with the positive end of a control signal, the other end of the photoelectric coupler A1 is connected with the negative end of the control signal, one end of a switch K6 of a self-locking relay A2 is connected with a coil K3 of a relay A3, and the other end of a switch K6 of a self-locking relay A2 is connected with an energy input pin 2 of a DC-DC converter A4;
the photoelectric coupler A1 receives a control signal provided by the outside through the plug-in connector A5, outputs the control signal to the 3 pin and the 4 pin of the self-locking relay A2 after being isolated, and can also generate a pulse signal through the manual switch A7 to output the pulse signal to the 3 pin and the 4 pin of the A2 to serve as the control signal of the self-locking relay A2.
4. The plug connector control circuit according to claim 3, wherein: the photocoupler A1 is Toshiba TLP 521-1G.
5. The plug connector control circuit according to claim 3, wherein: the model of the self-locking relay A2 is YYYLOCK-1.
6. The plug connector control circuit according to claim 1, wherein: the type of the relay A3 is M2YN-GS-24VDC of ohm dragon, and is a two-position double-contact relay.
7. The plug connector control circuit according to claim 1, wherein: the DC-DC converter A4 is an LM2596HVS adjustable voltage reduction module, and the output voltage is adjusted to be 5V.
8. The plug connector control circuit according to claim 1, wherein: the voltage of the external power supply is 28V.
9. The plug connector control circuit according to claim 1, wherein: the pulse amplitude of the control signal is 28V, and the pulse width is 20 ms.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811418235.7A CN109541974B (en) | 2018-11-26 | 2018-11-26 | Plug connector control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811418235.7A CN109541974B (en) | 2018-11-26 | 2018-11-26 | Plug connector control circuit |
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| CN109541974A CN109541974A (en) | 2019-03-29 |
| CN109541974B true CN109541974B (en) | 2020-10-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101483301A (en) * | 2008-11-27 | 2009-07-15 | 张银根 | Controller for charging type hydraulic tool |
| CN102332223B (en) * | 2011-09-25 | 2014-06-25 | 北京理工大学 | Teaching experiment system based on alternating-current motor driving control method |
| CN203932964U (en) * | 2014-06-09 | 2014-11-05 | 安徽赛瑞储能设备有限公司 | A kind of current foldback circuit of energy conversion system |
| CN107134840A (en) * | 2017-06-16 | 2017-09-05 | 北京新能源汽车股份有限公司 | A kind of overcurrent protection circuit, bidirectional charger and electric automobile |
| US10033285B1 (en) * | 2017-06-19 | 2018-07-24 | Dialog Semiconductor Inc. | Secondary controller for a flyback converter including a sense resistor fault detection |
| CN109976309B (en) * | 2019-03-29 | 2020-11-20 | 北京宇航系统工程研究所 | Dynamic reconfigurable universal ground measurement and control equipment and signal input and output control method thereof |
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