CN109274259B - Power supply on-off control method, device and application - Google Patents
Power supply on-off control method, device and application Download PDFInfo
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- CN109274259B CN109274259B CN201811270753.9A CN201811270753A CN109274259B CN 109274259 B CN109274259 B CN 109274259B CN 201811270753 A CN201811270753 A CN 201811270753A CN 109274259 B CN109274259 B CN 109274259B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
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Abstract
The invention provides a power supply on-off control method, a power supply on-off control device and application, and belongs to the technical field of space power supplies. The control method comprises the following steps: sending a control signal through a programmable time sequence control circuit, wherein the control signal comprises a high-level starting signal or a low-level shutdown signal; when the control signal is a high-level starting signal, the switch module is conducted, so that the control module is switched to the output enabling end of the DC/DC module and is kept constantly, and the DC/DC module outputs secondary voltage; and when the control signal is a low-level shutdown signal, the switch module is not conducted, so that the control module is switched to the forbidden output end of the DC/DC module and is kept constantly, and the DC/DC module does not output voltage. The invention has the advantages of few peripheral devices, high reliability and high control time precision, and is very suitable for the current requirements of miniaturization, low power consumption and light weight of space missions. The problem of the control of the sequential startup and shutdown of a plurality of satellite platforms under the condition that the control signal is low voltage is solved.
Description
Technical Field
The invention provides a power supply on-off control method, a power supply on-off control device and application, and belongs to the technical field of space power supplies.
Background
The target of deep space exploration is far away from the earth, the energy power problem of long-time flight is a worldwide technical problem, and the energy source after the Mars detector lands is more limited, so that the reasonable on-off control of the on-satellite equipment is particularly important according to the actual requirement, and the working life of the detector is directly determined.
The existing satellite-borne power supply on-off control method is relatively single in implementation principle, the voltage amplitude of an on-off control circuit is 10-12V or 28V more generally, the circuit is realized in a relay or an optical coupler mode, and two signals are needed for controlling on-off. For example, in document 1, "control method of space power supply module with on/off timing requirement" (wanan, wurong, space electronics technology, 2017), a timing logic control circuit is designed for the above-mentioned and after-mentioned step-by-step power-on and power-off timing control requirement of a satellite CCD camera, theoretical analysis and calculation are performed, and experimental verification is performed at the same time; in document 2, an article of 'step-by-step power-on and power-off control circuit of a novel DC-DC converter' (wang country, liu ke yuan, electronic design application, 2009) proposes a design method using a MOSFET tube + an operational amplifier + an RC delay network for the step-by-step power-on and power-off timing sequence requirement of a spacecraft, and provides simulation data.
In document 1, the on/off control method mainly includes analog circuits such as an operational amplifier, an RC delay network, and a magnetic latching relay, and the on/off time interval is mainly adjusted by the RC delay network; under the influence of circuit form, the on-off time sequence of the power supply is only millisecond-level, the control time and the error are influenced by the action time of the magnetic latching relay, and the accuracy of the on-off time sequence is not high; document 2 is mainly to connect N-channel MOSFET tubes in series at the input end (loop) of the DC/DC module to replace relays, and to control the on/off of the MOSFET tubes to realize the power on/off control of the DC/DC module, and the main circuit thereof is composed of analog circuits such as MOSFET tubes, operational amplifiers, and RC delay networks, and the like, and the method provided by document 2 has the same problems as document 1, that is, the power on/off time is controlled by the operational amplifiers and the RC networks, and the step-by-step power on/off timing sequence adjustment magnitude is limited and the accuracy is not high.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a power on/off control method, a power on/off control device and application. Meanwhile, the method uses fewer devices and is very suitable for the requirements of high integration, miniaturization and low power consumption of deep space detection.
The technical solution adopted by the invention is as follows:
a power on/off control method comprises the following steps:
sending a control signal through a programmable time sequence control circuit, wherein the control signal comprises a high-level starting signal or a low-level shutdown signal;
when the control signal is a high-level starting signal, the switch module is conducted, so that the control module is switched to the output enabling end of the DC/DC module and is kept constantly, and the DC/DC module outputs secondary voltage;
and when the control signal is a low-level shutdown signal, the switch module is not conducted, so that the control module is switched to the forbidden output end of the DC/DC module and is kept constantly, and the DC/DC module does not output voltage.
In an optional embodiment, the switch module includes a filter circuit and a transistor switch circuit, the filter circuit is configured to filter interference and noise on the control signal output by the programmable timing control circuit, and the transistor switch circuit is configured to implement conduction or non-conduction according to a high-low level of the control signal output by the filter circuit.
In an optional embodiment, the filter circuit includes capacitors C1, C2, C3, C4, the capacitors C1, C2 are connected in series and then connected in parallel with the capacitors C3, C4, one end of the capacitor C1 is connected to the output end of the programmable timing control circuit, and the other end of the capacitor C2 is grounded; the transistor switch circuit comprises a transistor Q1, a resistor R1 and a resistor R2, wherein one end of the resistor R1 is connected with the output end of the filter circuit, the other end of the resistor R1 is connected with the base electrode of the transistor Q1, one end of the resistor R2 is connected with the base electrode of the transistor Q1, the other end of the resistor R2 is grounded, the emitter electrode of the transistor Q1 is grounded, and the collector electrode of the transistor Q1 is connected with the input end of the control module.
In an optional embodiment, the control module comprises an electromagnetic relay U1, diodes V1, V2, resistors R3, R4, two sets of contacts of the electromagnetic relay U1 are connected in parallel, a first end of the resistors R3, R4 connected in parallel is connected to a power input end, a second end of the resistors R3, R4 connected in parallel is connected to one end of a coil of the electromagnetic relay U1, one end of the two sets of contacts of the electromagnetic relay U1 connected in parallel is connected to ground once, the other end of the two sets of contacts is connected to an INHIBIT enable end of the DC/DC module, a negative end of the diode V1 is connected to a second end of the resistors R3, R4 connected in parallel, a positive end of the diode V1 is connected to a negative end of the diode V2, and a positive end of the diode V2 is connected to the other end of the coil of the electromagnetic relay U1.
A power on/off control device, comprising:
the programmable time sequence control circuit is used for sending control signals, and the control signals comprise high-level startup signals or low-level shutdown signals;
the switch module is used for conducting when the control signal is a high-level starting signal and not conducting when the control signal is a low-level shutdown signal;
the control module is used for switching to an output enabling end of the DC/DC module and keeping the output enabling end when the switch module is conducted, and switching to a forbidden output end of the DC/DC module and keeping the output forbidden output end when the switch module is not conducted;
the DC/DC module is used for outputting secondary voltage when the control module is switched to an output enabling end of the DC/DC module and keeps the secondary voltage all the time, and does not output voltage when the control module is switched to a forbidden output end of the DC/DC module and keeps the secondary voltage all the time.
In an optional embodiment, the switch module includes a filter circuit and a transistor switch circuit, the filter circuit is configured to filter interference and noise on the control signal output by the programmable timing control circuit, and the transistor switch circuit is configured to implement conduction or non-conduction according to a high-low level of the control signal after passing through the filter circuit.
In an optional embodiment, the filter circuit includes capacitors C1, C2, C3, C4, the capacitors C1, C2 are connected in series and then connected in parallel with the capacitors C3, C4, one end of the capacitor C1 is connected to the output end of the programmable timing control circuit, and the other end of the capacitor C2 is grounded; the transistor switch circuit comprises a transistor Q1, a resistor R1 and a resistor R2, wherein one end of the resistor R1 is connected with the output end of the filter circuit, the other end of the resistor R1 is connected with the base electrode of the transistor Q1, one end of the resistor R2 is connected with the base electrode of the transistor Q1, the other end of the resistor R2 is grounded, the emitter electrode of the transistor Q1 is grounded, and the collector electrode of the transistor Q1 is connected with the input end of the control module.
In an alternative embodiment, the control module is an electromagnetic relay control module.
In an optional embodiment, the electromagnetic relay module comprises an electromagnetic relay U1, diodes V1, V2, resistors R3, R4, two sets of contacts of the electromagnetic relay U1 are connected in parallel, a first end of the resistors R3, R4 connected in parallel is connected to a power input end, a second end of the resistors R3, R4 connected in parallel is connected to one end of a coil of the electromagnetic relay U1, one end of the two sets of contacts of the electromagnetic relay U1 connected in parallel is connected to ground once, the other end of the two sets of contacts is connected to an INHIBIT enable end of the DC/DC module, a negative end of the diode V1 is connected to a second end of the resistors R3, R4 connected in parallel, a positive end of the diode V1 is connected to a negative end of the diode V2, and a positive end of the diode V2 is connected to the other end of the coil of the electromagnetic relay U1.
The power supply on-off control device is applied to a satellite-borne power supply.
Compared with the prior art, the invention has the following advantages:
(1) according to the power supply on-off control device provided by the embodiment of the invention, the programmable time sequence control circuit is adopted to send the control signal, the voltage amplitude of the control signal is only 3.3V, and the requirements of a satellite onboard digital processing system on low voltage and low power consumption are met;
(2) under the condition that the satellite resources are quite limited, the on-off control system only uses one low-voltage signal to control the on-off, has simple control logic and basically does not occupy system software resources;
(3) because the control signal is output by the programmable sequential control circuit, the control time interval can be changed at will according to the software program, and the time precision is high, thereby reducing the complexity of the switch design and improving the reliability;
(4) compared with the traditional analog circuit implementation mode, the invention has greatly increased anti-interference capability.
Drawings
Fig. 1 is a schematic diagram of a power on/off control apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a satellite power on/off control device according to an embodiment of the present invention;
fig. 3 is a flowchart of a power on/off control method according to an embodiment of the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a power switch control apparatus, including:
the programmable time sequence control circuit is used for sending control signals, and the control signals comprise high-level startup signals or low-level shutdown signals;
the switch module is used for conducting when the control signal is a high-level starting signal and not conducting when the control signal is a low-level shutdown signal;
the control module is used for switching to an output enabling end of the DC/DC module and keeping the output enabling end when the switch module is conducted, and switching to a forbidden output end of the DC/DC module and keeping the output disabling end when the switch module is not conducted;
the DC/DC module is used for outputting secondary voltage when the control module is switched to an output enabling end of the DC/DC module and keeps the secondary voltage all the time, and does not output voltage when the control module is switched to a forbidden output end of the DC/DC module and keeps the secondary voltage all the time.
Specifically, in the embodiment of the present invention, the programmable timing control circuit may be a digital logic programmable circuit such as an FPGA timing control circuit, a single chip timing control circuit, and the like, which is not limited in the present invention; the switch module is preferably a transistor switch module to improve the response speed; the control module is preferably an electromagnetic relay control module.
The embodiment of the invention can be applied to on-off control of the satellite-borne power supply.
According to the power supply on-off control device provided by the embodiment of the invention, the programmable time sequence control circuit is adopted to send the control signal, the voltage amplitude of the control signal is only 3.3V, and the requirements of a satellite onboard digital processing system on low voltage and low power consumption are met; under the condition that the satellite resources are quite limited, the on-off control system only uses one low-voltage signal to control the on-off, has simple control logic and basically does not occupy system software resources; because the control signal is output by the programmable sequential control circuit, the control time interval can be changed at will according to the software program, and the time precision is high, thereby reducing the complexity of the switch design and improving the reliability; compared with the traditional analog circuit implementation mode, the invention has greatly increased anti-interference capability.
Referring to fig. 2, in an alternative embodiment, the switch module includes a filter circuit and a transistor switch circuit, the filter circuit is configured to filter interference and noise on the control signal output by the programmable timing control circuit, and the transistor switch circuit is configured to implement conduction or non-conduction according to a high-low level of the control signal after passing through the filter circuit. The filter circuit comprises capacitors C1, C2, C3 and C4, wherein the capacitors C1 and C2 are connected in series and then connected in parallel with the capacitors C3 and C4, one end of the capacitor C1 is connected with the output end of the programmable timing control circuit, and the other end of the capacitor C2 is grounded; the transistor switch circuit comprises a transistor Q1, a resistor R1 and a resistor R2, wherein one end of the resistor R1 is connected with the output end of the filter circuit, the other end of the resistor R1 is connected with the base electrode of the transistor Q1, one end of the resistor R2 is connected with the base electrode of the transistor Q1, the other end of the resistor R2 is grounded, the emitter electrode of the transistor Q1 is grounded, and the collector electrode of the transistor Q1 is connected with the input end of the control module. The invention fully utilizes the advantages of sensitive response, high switching speed and high stability of the transistor as a switch, and simultaneously, as the electromagnetic relay driven by the rear end of the transistor belongs to an inductive device, no spark is generated at the moment of opening the switch, thereby greatly improving the safety and reliability of aerospace products. Referring to fig. 2, in an alternative embodiment, the electromagnetic relay module includes an electromagnetic relay U1, diodes V1, V2, and resistors R3, R4, two sets of contacts of the electromagnetic relay U1 are connected in parallel, a first end of the parallel-connected resistors R3, R4 is connected to a power input end, a second end of the parallel-connected resistors R3, R4 is connected to one end of a coil of the electromagnetic relay U1, one end of the parallel-connected two sets of contacts of the electromagnetic relay U1 is connected to a ground, the other end is connected to an INHIBIT enable end of the DC/DC module, a negative end of the diode V1 is connected to the second end of the parallel-connected resistors R3, R4, a positive end of the diode V1 is connected to a negative end of the diode V2, and a positive end of the diode V2 is connected to the other end of the parallel-connected coil 1 of the electromagnetic relay U638. The invention switches the state by using the electromagnetic relay, and has the advantages of simple circuit implementation mode, reliable switching and strong universal design. Meanwhile, the requirements of miniaturization and low power consumption of deep space detection are combined, and the selected electromagnetic relay has the advantages of small size, light weight, good shock resistance, high sensitivity, quick action and the like, meets the requirement of space navigation tasks, and has high engineering application value.
Referring to fig. 3, an embodiment of the present invention provides a power on/off control method, including:
step 101: sending a control signal through a programmable time sequence control circuit, wherein the control signal comprises a high-level starting signal or a low-level shutdown signal;
step 102: when the control signal is a high-level starting signal, the switch module is conducted, so that the control module is switched to the output enabling end of the DC/DC module and is kept constantly, and the DC/DC module outputs secondary voltage; and when the control signal is a low-level shutdown signal, the switch module is not conducted, so that the control module is switched to the forbidden output end of the DC/DC module and is kept constantly, and the DC/DC module does not output voltage.
The control method provided by the embodiment of the present invention corresponds to the above device embodiments one to one, and for specific description and effects, reference is made to the above device embodiments, which are not described herein again.
According to the power on/off control method provided by the embodiment of the invention, the programmable time sequence control circuit is adopted to send the control signal, the voltage amplitude of the control signal is only 3.3V, and the requirements of a satellite onboard digital processing system on low voltage and low power consumption are met; under the condition that the satellite resources are quite limited, the on-off control system only uses one low-voltage signal to control the on-off, has simple control logic and basically does not occupy system software resources; because the control signal is output by the programmable sequential control circuit, the control time interval can be changed at will according to the software program, and the time precision is high, thereby reducing the complexity of the switch design and improving the reliability; compared with the traditional analog circuit implementation mode, the invention has greatly increased anti-interference capability.
The following is a specific embodiment of the present invention:
as shown in fig. 2, an embodiment of the present invention provides a low-voltage input on-board power supply switching control device, which includes an FPGA timing control circuit, a transistor switch module, an electromagnetic relay control module, a DC/DC module, and an on-board device;
the transistor switch module comprises a filter circuit and a transistor switch circuit, the filter circuit comprises capacitors C1, C2, C3 and C4, the capacitors C1 and C2 are connected in series and then connected in parallel with the capacitors C3 and C4, one end of the capacitor C1 is connected with the output end of the programmable timing control circuit, and the other end of the capacitor C2 is grounded; the transistor switch circuit comprises a transistor Q1, a resistor R1 and a resistor R2, wherein one end of the resistor R1 is connected with a logic signal input, the other end of the resistor R1 is connected with the base electrode of the transistor Q1, one end of the resistor R2 is connected with the base electrode of the transistor Q1, the other end of the resistor R2 is grounded, the emitter electrode of the transistor Q1 is grounded, and the collector electrode of the transistor Q1 is connected with the input end of the control module;
the electromagnetic relay control module comprises an electromagnetic relay U1, diodes V1, V2, resistors R3 and R4, two sets of contacts of the electromagnetic relay U1 are connected in parallel, first end connection power input ends after the parallel connection of the resistors R3 and R4, second end connections after the parallel connection of the resistors R3 and R4 are connected with one end of a solenoid of the electromagnetic relay U1, one end connection once after the parallel connection of the two sets of contacts of the electromagnetic relay U1 is connected with the other end connection of an INHIBIT enabling end of the DC/DC module, the negative end of the diode V1 is connected with the second end after the parallel connection of the resistors R3 and R4, the positive end of the diode V1 is connected with the negative end of the diode V2, and the positive end of the diode V2 is connected with the other end connection of the solenoid of the electromagnetic relay U1.
1) When the satellite-borne high-power equipment (or equipment which has special requirements and does not need to be started up firstly) is not started up, the enabling end of a DC/DC module for supplying power to the satellite-borne high-power equipment is pulled to be in an output prohibition state by an electromagnetic relay control module;
2) when the high-power equipment needs to be started to work according to the requirement of the space mission, the FPGA time sequence control circuit outputs a low-voltage signal 3.3V (logic high level) starting signal;
3)3.3V high level enters the transistor switch circuit after passing through the matched filter circuit;
4) when the transistor Q1 is turned on as a switch, a voltage difference is generated across the solenoid of the electromagnetic relay U1, and the electromagnetic relay U1 is operated.
5) After the electromagnetic relay U1 acts, the contact is switched to the output enable end of the DC/DC module and is kept all the time, the output end of the DC/DC module outputs secondary voltage normally, and at the moment, the high-power equipment is started.
6) When the high-power equipment needs to be shut down, the FPGA time sequence control circuit outputs a logic low level 0V.
7) The 0V voltage goes to the base of transistor Q1, where transistor Q1 acts as a switch and does not conduct.
8) The electromagnetic relay U1 contact is switched to the forbidden output end of the DC/DC module and is kept all the time, at the moment, the DC/DC module does not output voltage, and the high-power equipment is shut down.
Table 1 shows the specifications of the components used in this example
The FPGA is a Virtex4-SX55 chip of XI L INX company which is used on a satellite, and the DC/DC module is a common thick film process module meeting the aerospace requirement.
The invention provides a brand-new design method based on the actual requirements of deep space exploration in China, the method controls the contact of an electromagnetic relay by controlling the time sequence through a digital logic circuit and utilizing the switching characteristic of a transistor, and then controls an enabling pin of a DC/DC module to control the on-off of related equipment.
Compared with the traditional control method, the method has the advantages that the startup and shutdown control is carried out by only one signal, and the control logic is simple, so that the system software resources are basically not occupied.
The above description is only for the best mode of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention shall be covered within the scope of the present invention.
The invention is not described in detail and is within the knowledge of a person skilled in the art.
Claims (7)
1. A power on/off control method is characterized by comprising the following steps:
sending a control signal through a programmable time sequence control circuit, wherein the control signal comprises a high-level starting signal or a low-level shutdown signal;
when the control signal is a high-level starting signal, the switch module is conducted, so that the control module is switched to the output enabling end of the DC/DC module and is kept constantly, and the DC/DC module outputs secondary voltage;
when the control signal is a low-level shutdown signal, the switch module is not conducted, the control module is switched to the forbidden output end of the DC/DC module and is kept constantly, and therefore the DC/DC module does not output voltage;
the control module comprises an electromagnetic relay U1, diodes V1, V2, resistors R3 and R4, two sets of contacts of the electromagnetic relay U1 are connected in parallel, the first end of the resistors R3 and R4 after being connected in parallel is connected with a power input end, the second end of the resistors R3 and R4 after being connected in parallel is connected with one end of a solenoid of the electromagnetic relay U1, one end of the two sets of contacts of the electromagnetic relay U1 after being connected in parallel is connected with a ground, the other end of the two sets of contacts is connected with an INHIBIT enabling end of the DC/DC module, the negative end of the diode V1 is connected with the second end of the resistors R3 and R4 after being connected in parallel, the positive end of the diode V1 is connected with the negative end of the diode V2, and the positive end of the diode V2 is connected with the other end of.
2. The power on/off control method according to claim 1, wherein the switch module includes a filter circuit and a transistor switch circuit, the filter circuit is configured to filter interference and noise on the control signal output by the programmable timing control circuit, and the transistor switch circuit is configured to be turned on or off according to a high or low level of the control signal output by the filter circuit.
3. The power on/off control method of claim 2, wherein the filter circuit comprises capacitors C1, C2, C3 and C4, the capacitors C1 and C2 are connected in series and then connected in parallel with the capacitors C3 and C4, one end of the capacitor C1 is connected to the output end of the programmable timing control circuit, and the other end of the capacitor C2 is grounded; the transistor switch circuit comprises a transistor Q1, a resistor R1 and a resistor R2, wherein one end of the resistor R1 is connected with the output end of the filter circuit, the other end of the resistor R1 is connected with the base electrode of the transistor Q1, one end of the resistor R2 is connected with the base electrode of the transistor Q1, the other end of the resistor R2 is grounded, the emitter electrode of the transistor Q1 is grounded, and the collector electrode of the transistor Q1 is connected with the input end of the control module.
4. A power switch control apparatus, comprising:
the programmable time sequence control circuit is used for sending control signals, and the control signals comprise high-level startup signals or low-level shutdown signals;
the switch module is used for conducting when the control signal is a high-level starting signal and not conducting when the control signal is a low-level shutdown signal;
the control module is used for switching to an output enabling end of the DC/DC module and keeping the output enabling end when the switch module is conducted, and switching to a forbidden output end of the DC/DC module and keeping the output forbidden output end when the switch module is not conducted; the control module is an electromagnetic relay control module; the electromagnetic relay module comprises an electromagnetic relay U1, diodes V1, V2 and resistors R3 and R4, two groups of contacts of the electromagnetic relay U1 are connected in parallel, the first end of the resistors R3 and R4 after being connected in parallel is connected with the input end of a power supply, the second end of the resistors R3 and R4 after being connected in parallel is connected with one end of a coil of the electromagnetic relay U1, one end of the two groups of contacts of the electromagnetic relay U1 after being connected in parallel is connected with the ground once, the other end of the two groups of contacts is connected with the INHIBIT enabling end of the DC/DC module, the negative end of the diode V1 is connected with the second end of the resistors R3 and R4 after being connected in parallel, the positive end of the diode V1 is connected with the negative end of the diode V2, and the positive end of the diode V2 is connected with;
the DC/DC module is used for outputting secondary voltage when the control module is switched to an output enabling end of the DC/DC module and keeps the secondary voltage all the time, and does not output voltage when the control module is switched to a forbidden output end of the DC/DC module and keeps the secondary voltage all the time.
5. The power switch control device according to claim 4, wherein the switch module comprises a filter circuit and a transistor switch circuit, the filter circuit is configured to filter interference and noise on the control signal output by the programmable timing control circuit, and the transistor switch circuit is configured to be turned on or off according to the high and low levels of the control signal after passing through the filter circuit.
6. A power switch control device according to claim 5, characterized in that said filter circuit comprises capacitors C1, C2, C3 and C4, said capacitors C1 and C2 are connected in series and then connected in parallel with said capacitors C3 and C4, one end of said capacitor C1 is connected with said programmable timing control circuit output end, and the other end of said capacitor C2 is grounded; the transistor switch circuit comprises a transistor Q1, a resistor R1 and a resistor R2, wherein one end of the resistor R1 is connected with the output end of the filter circuit, the other end of the resistor R1 is connected with the base electrode of the transistor Q1, one end of the resistor R2 is connected with the base electrode of the transistor Q1, the other end of the resistor R2 is grounded, the emitter electrode of the transistor Q1 is grounded, and the collector electrode of the transistor Q1 is connected with the input end of the control module.
7. A power switch control device according to any of claims 4 to 6, characterised in that it is applied to a satellite borne power supply.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001103381A (en) * | 1999-09-29 | 2001-04-13 | Sanyo Electric Co Ltd | Ccd drive circuit |
| CN101826805A (en) * | 2009-03-02 | 2010-09-08 | 鸿富锦精密工业（深圳）有限公司 | Control circuit of switch power supply |
| CN202190258U (en) * | 2011-03-24 | 2012-04-11 | 北京傲天动联技术有限公司 | Power sequence control circuit |
| CN204028614U (en) * | 2014-07-25 | 2014-12-17 | 上海联影医疗科技有限公司 | Switching on and shutting down control circuit and medical imaging device |
| CN105591270A (en) * | 2014-11-17 | 2016-05-18 | 中国航空工业第六一八研究所 | Laser modulation system |
| CN105720960A (en) * | 2016-03-11 | 2016-06-29 | 武汉中旗生物医疗电子有限公司 | On-off circuit |
| CN205453657U (en) * | 2016-03-11 | 2016-08-10 | 武汉中旗生物医疗电子有限公司 | Startup/shutdown circuit |
| CN206559505U (en) * | 2017-03-24 | 2017-10-13 | 四川长虹电器股份有限公司 | Television set USB power source management system |
-
2018
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001103381A (en) * | 1999-09-29 | 2001-04-13 | Sanyo Electric Co Ltd | Ccd drive circuit |
| CN101826805A (en) * | 2009-03-02 | 2010-09-08 | 鸿富锦精密工业（深圳）有限公司 | Control circuit of switch power supply |
| CN202190258U (en) * | 2011-03-24 | 2012-04-11 | 北京傲天动联技术有限公司 | Power sequence control circuit |
| CN204028614U (en) * | 2014-07-25 | 2014-12-17 | 上海联影医疗科技有限公司 | Switching on and shutting down control circuit and medical imaging device |
| CN105591270A (en) * | 2014-11-17 | 2016-05-18 | 中国航空工业第六一八研究所 | Laser modulation system |
| CN105720960A (en) * | 2016-03-11 | 2016-06-29 | 武汉中旗生物医疗电子有限公司 | On-off circuit |
| CN205453657U (en) * | 2016-03-11 | 2016-08-10 | 武汉中旗生物医疗电子有限公司 | Startup/shutdown circuit |
| CN206559505U (en) * | 2017-03-24 | 2017-10-13 | 四川长虹电器股份有限公司 | Television set USB power source management system |
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| CN109274259A (en) | 2019-01-25 |
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