CN108566103B - One-key switch device for secondary radar and implementation method thereof - Google Patents
One-key switch device for secondary radar and implementation method thereof Download PDFInfo
- Publication number
- CN108566103B CN108566103B CN201810447407.7A CN201810447407A CN108566103B CN 108566103 B CN108566103 B CN 108566103B CN 201810447407 A CN201810447407 A CN 201810447407A CN 108566103 B CN108566103 B CN 108566103B
- Authority
- CN
- China
- Prior art keywords
- power
- power supply
- group
- relay
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Radar Systems Or Details Thereof (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention discloses a one-key startup and shutdown device for a secondary radar and an implementation method thereof, and the device comprises a secondary radar, a power supply assembly and a power supply main switch, wherein the power supply assembly is connected with a single-phase alternating current power supply through the power supply main switch; the invention realizes the function of sequentially powering on and powering off a plurality of varieties of power supplies by one power supply main switch through a specific circuit, thereby achieving the purpose of one-key startup and shutdown.
Description
Technical Field
The invention relates to the technical field of secondary radar power supplies, in particular to a one-key startup and shutdown device for a secondary radar and an implementation method thereof.
Background
The secondary radar is used as an important component of an air traffic control system, is an important information source of the air traffic control system, is suitable for airport and air route monitoring, and can provide information such as the distance, the direction, the air pressure height, an identification code and other special marks (such as emergency, communication fault, hijacked and the like) of an airborne transponder aircraft in a power coverage range.
The secondary radar is divided into outdoor and indoor devices according to structural division. The outdoor equipment comprises an antenna and an antenna pedestal. The indoor equipment comprises parts such as data processing, signal processing, a receiver, a transmitter, a power supply and the like, and is usually arranged in a cabinet; except that the antenna in the secondary radar equipment is a passive component, power supply is not needed, and other parts can work only by power supply. The outdoor antenna pedestal adopts 380V three-phase alternating current and 220V single-phase alternating current to supply power, the indoor rack adopts 220V single-phase alternating current to supply power, the rack is internally provided with a plurality of components such as a power supply, a transmitter, a receiver, signal processing, data processing and the like, wherein only the power supply component supplies power for the 220V single-phase alternating current, other components are all direct current power supplies, the 220V single-phase alternating current power is converted into a plurality of varieties of direct current power supplies required by other components by the power supply component, and the power is supplied for each component.
The secondary radar usually completes the power-up of the outdoor equipment first and then performs the power-up of the indoor equipment. The power-up process of the outdoor device is relatively simple, and the outdoor device can be normally powered up as long as it is confirmed that no person invades in the dangerous area of the rotating part (such as an antenna). The power-on of the indoor equipment is relatively complex, and the situation that an excitation signal is ultra-wide or ultra-duty ratio and a control protection signal are not established can occur at the moment of power-on due to uncertainty of the signal, so that a power amplifier tube of a transmitter is damaged, a strict rule is made on the power-on sequence of a power supply in a radar operation manual, when the power-on is required, the power-on is sequentially completed according to the sequence of data processing/signal processing-an excitation source-the transmitter, and the transmitter is ensured to start to work after the excitation and control protection signals are stably established. Similarly, the power-off sequence also has requirements, and the power-off is required to be sequentially cut off according to the sequence of the transmitter-the excitation source-the data processing/the signal processing, so that the transmitter is ensured to stop working under normal excitation and the control protection signal. To simplify the design, the power up sequence can be divided into two steps: the data processing/signal processing and the excitation source are powered up at the same time, and the transmitter is powered up in a delayed manner; the power-off sequence is also divided into two steps: the transmitter is powered off firstly, data processing/signal processing and excitation source delay power off. Since the stimulus is contained in the receiver, the powering up and down of the stimulus is the powering up and down of the receiver.
According to the principle of secondary radar, after the computer is started, data processing sends a working mode control word to signal processing, the signal processing generates a corresponding time sequence signal from the working mode control word to an excitation source in a receiver, the excitation source generates a corresponding excitation signal to be sent to a transmitter, and the transmitter generates a required inquiry signal; meanwhile, a transmitter protection signal (called as a control protection signal for short) generated by signal processing is also sent to the transmitter, and the control protection signal protects a power amplifier tube of the transmitter from being damaged due to ultra-wide excitation signals or overhigh duty ratio. The precondition of normal operation of the transmitter amplifier tube is that when the excitation signal is input, the control and protection signal is in an effective (high level) state, but the control and protection signal cannot be in the effective (high level) state. The excitation signal ensures the waveform of the transmitted signal to be correct, and the control and protection signal ensures the safe work of the power amplifier tube. When the secondary radar continuously operates, the excitation and control protection signals are normally output, the transmitter is in a normal working state, and only at the moment of starting and stopping the radar, the transmitter can generate wrong output signals or be accidentally damaged due to the uncertainty of the excitation and control protection signals.
In the prior art, an operator needs to add points and power off according to a strict sequence of finishing a plurality of power supplies in an operation flow, and equipment is often damaged due to unfamiliarity of the operator or misoperation of the operator.
Disclosure of Invention
The present invention provides a one-key power on/off device for a secondary radar and an implementation method thereof, which solve the technical problem of the prior art, and avoid the damage of a power amplifier tube in the secondary radar caused by the unfamiliarity or misoperation of workers in the manual operation process, thereby realizing one-key power on/off.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a key switching on and shutting down device for secondary radar, includes secondary radar, power supply module and power master switch, power supply module is connected with single phase alternating current power supply through power master switch, power supply module is connected with secondary radar, secondary radar is including data processing unit, signal processing unit, receiver and the transmitter that connects gradually, the transmitter includes sequential control circuit, preceding stage power amplification unit and the last power amplification unit of interconnect, power supply module includes first power and second group power, first power is connected with data processing unit, signal processing unit, receiver and sequential control circuit respectively, second group power is connected with preceding stage power amplification unit and last power amplification unit respectively, first group power is connected with relay drive circuit, relay drive circuit is connected with the relay, the relay is connected with the second group of power sources.
As a further improved technical solution of the present invention, the first group of power supplies and the second group of power supplies each include a plurality of power supply units, the plurality of power supply units are used for converting a single-phase ac power supply into different dc power supplies to supply power to the secondary radar, the relay driving circuits and the relays are both a plurality of and include voltage dividing circuits and triodes, one power supply unit in the first group of power supplies is respectively connected with the plurality of voltage dividing circuits, the voltage dividing circuits are connected with the triodes, the triodes are connected with the relays, and the power supply units in the second group of power supplies are connected with a preceding stage power amplification unit and a final stage power amplification unit through the relays.
As a further improved technical scheme of the invention, the voltage division circuit comprises a variable resistor RP, a resistor R1 and a resistor R2, the variable resistor RP is connected at one end to an output of one power supply unit in the first set of power supplies, the other end of the variable resistor RP is connected with one end of the resistor R1, the other end of the resistor R1 is respectively connected with the base of the triode and one end of the resistor R2, the other end of the resistor R2 and the emitter of the triode are both connected with a ground wire, the collector of the triode is connected with one end of the coil of the relay, the other end of the coil of the relay is connected with the output end of one power supply unit in the first group of power supplies, the common contact of the relay is connected with the power supply unit in the second group of power supplies, the normally closed contact of the relay is connected with the ground wire through a resistor, and the normally open contact of the relay is connected with the preceding stage power amplification unit and the final stage power amplification unit.
The invention further provides a modified technical scheme, which further comprises a plurality of DC-DC conversion circuits, wherein the first group of power supplies are respectively connected with a data processing unit, a signal processing unit, a receiver and a time sequence control circuit in a transmitter through the DC-DC conversion circuits, the second group of power supplies are connected with a preceding power amplification unit and a final power amplification unit through the DC-DC conversion circuits, one end of the variable resistor RP is connected with the DC-DC conversion circuit connected with the output end of one power supply unit in the first group of power supplies, and the normally open contact of the relay is connected with the preceding power amplification unit and the final power amplification unit through the DC-DC conversion circuits.
As a further improved technical solution of the present invention, the first group of power supplies includes four power supply units, one power supply unit is used for supplying power to the data processing unit, the signal processing unit and the timing control circuit, and the power supply unit is connected to the power supply unit in the second group of power supplies through the relay driving circuit and adopts a switching power supply, three power supply units are used for supplying power to the receiver and adopt a linear power supply, and the relay is a 5V relay.
As a further improved technical solution of the present invention, the second group of power supplies includes three power supply units, and the three power supply units all use switching power supplies, one power supply unit is used for controlling on/off of a last power amplification tube in a last power amplification unit, one power supply unit is used for supplying power to a previous power amplification unit, and one power supply unit is used for supplying power to a last power amplification unit.
In order to achieve the technical purpose, the invention adopts another technical scheme as follows:
a realization method of a one-key switch device for a secondary radar comprises the following steps:
(1) integrating a plurality of power supply units which need to supply power for a secondary radar in the same power supply assembly, and grouping the plurality of power supply units according to the sequence of power-up and the sequence of power-down of a data processing unit, a signal processing unit, a receiver and a transmitter to obtain a first group of power supplies and a second group of power supplies, wherein the first group of power supplies are used for respectively supplying power in advance and delaying power-down for a time sequence control circuit in the data processing unit, the signal processing unit, the receiver and the transmitter, and the second group of power supplies are used for delaying power supply and delaying power-down for a preceding power amplification unit and a final power amplification unit in the transmitter;
(2) connecting the first group of power supplies and the second group of power supplies with a single-phase alternating current power supply through a power supply main switch;
(3) selecting a power supply unit from the first group of power supplies as a control power supply, and connecting the control power supply with the second group of power supplies through a relay drive circuit and a relay;
(4) the method comprises the following steps that a power supply main switch is turned on, a first group of power supplies supply power for a data processing unit, a signal processing unit, a receiver and a time sequence control circuit in a transmitter, a control power supply in the first group of power supplies outputs voltage to a relay driving circuit, the output voltage controls the conduction of a triode in the relay driving circuit so as to drive the attraction of a relay, and the conduction of a second group of power supplies and a pre-stage power amplification unit and a final-stage power amplification unit in the transmitter is controlled, wherein the voltage value output by the control power supply when the relay is attracted is larger than the voltage value output by the control power supply when the data processing unit, the signal processing unit, the receiver and the time sequence control circuit in the transmitter are electrified, so that the control of;
(5) and closing a power supply main switch, stopping a triode in the relay driving circuit, releasing the relay, stopping the pre-stage power amplification unit and the final-stage power amplification unit, wherein the voltage value output by the control power supply when the relay is released is larger than the voltage value output by the control power supply when the time sequence control circuits in the data processing unit, the signal processing unit, the receiver and the transmitter are powered off, so that the control of the power failure in advance of the second group of power supplies is realized.
As a further improved technical solution of the present invention, the relay is a 5V relay, the control power supply is used for converting a voltage output by the single-phase ac power supply into a 5V dc voltage, and the control power supply is a power supply unit connected to a timing control circuit in the transmitter.
The invention has the beneficial effects that: the operator can complete the sequential power-on and sequential power-off of a plurality of power supplies by operating one power supply main switch, and the operator does not need to complete the sequential power-on and power-off of the plurality of power supplies according to a strict operation flow. The power supply main switch can complete the sequential power-on and power-off functions of a plurality of varieties of power supplies through a specific circuit, and the purpose of one-key power on and off is achieved. The automatic control of the circuit replaces manual operation, so that equipment damage caused by unskilled workers or misoperation is avoided, the reliability of the equipment is improved, and the operation of the equipment is simplified.
Drawings
Fig. 1 is a schematic diagram of a one-key power on/off principle in the embodiment.
FIG. 2 is a diagram of an embodiment of a one-touch power-on/off sequence.
Fig. 3 is a schematic diagram of a relay driving circuit in the embodiment.
Detailed Description
The invention realizes the function of completing the sequential power-on and power-off of a plurality of varieties of power supplies by one power supply main switch through a specific circuit, and the specific implementation mode of the invention is further explained according to figures 1 to 3 as follows:
a key switching on and shutting down device for secondary radar, includes secondary radar, power supply module and power master switch, power supply module is connected with single phase alternating current power supply through the power master switch, power supply module is connected with the secondary radar, secondary radar's interior equipment includes data processing unit, signal processing unit, receiver and the transmitter that connects gradually, the transmitter includes sequential control circuit, preceding stage power amplification unit and the last stage power amplification unit of interconnect, power supply module includes first power and second group power, first power is connected with data processing unit, signal processing unit, receiver and sequential control circuit respectively, second group power is connected with preceding stage power amplification unit and last stage power amplification unit respectively, first group power is connected with relay drive circuit, relay drive circuit is connected with the relay, the relay is connected with the second group of power sources.
All include a plurality of electrical unit, a plurality of in first group power and the second group power thereby electrical unit is used for converting single phase AC power into different DC power supply and supplies power for the secondary radar, relay drive circuit and relay are a plurality of and relay drive circuit includes bleeder circuit and triode, an electrical unit in the first group power respectively with a plurality of bleeder circuit connects, bleeder circuit with the triode is connected, the triode with the relay is connected, electrical unit in the second group power all is connected with preceding stage power amplifier unit and final stage power amplifier unit through the relay.
Referring to fig. 1 and 3, the voltage divider circuit includes a variable resistor RP, a resistor R1 and a resistor R2, one end of the variable resistor RP is connected to an output terminal (+5V power) of one power supply unit in the first group of power supplies, the other end of the variable resistor RP is connected to one end of the resistor R1, the other end of the resistor R1 is connected to a base of a transistor and one end of a resistor R2, the other end of the resistor R2 and an emitter of the transistor are both connected to ground, a collector of the transistor is connected to one end of a coil of the relay, the other end of the coil of the relay is connected to the output terminal (+5V power) of the one power supply unit in the first group of power supplies, a common contact of the relay is connected to the power supply unit in the second group of power supplies, and a normally closed contact of the relay is connected through a resistor (e.g., the resistor R3 in, Resistor R4 and resistor R5) are connected with the ground wire, and the normally open contacts of the relays (such as relay K1, relay K2 and relay K3 in figure 1) are connected with the front-stage power amplification unit and the final-stage power amplification unit.
Referring to fig. 1 and fig. 3, the present embodiment further includes a plurality of DC-DC conversion circuits, the first group of power supplies is connected to the data processing unit, the signal processing unit, the receiver, and the timing control circuit in the transmitter through the DC-DC conversion circuits, the second group of power supplies is connected to the preceding stage power amplification unit and the final stage power amplification unit through the DC-DC conversion circuits, one end of the variable resistor RP is connected to the DC-DC conversion circuit connected to the output end of one power supply unit in the first group of power supplies, and the normally open contact of the relay is connected to the preceding stage power amplification unit and the final stage power amplification unit through the DC-DC conversion circuits.
The first group of power supplies comprise four power supply units, one power supply unit is used for supplying power for the data processing unit, the signal processing unit and the time sequence control circuit, the power supply unit is connected with the power supply unit in the second group of power supplies through the relay driving circuit and adopts a switch power supply, three power supply units are used for supplying power for the receiver, the three power supply units adopt linear power supplies, and the relay is a 5V relay. The second group of power supply comprises three power supply units, the three power supply units all adopt a switching power supply, one power supply unit is used for controlling the on-off of a final power amplifier tube in the final power amplifier unit, one power supply unit is used for supplying power to a preceding power amplifier unit, and one power supply unit is used for supplying power to the final power amplifier unit.
Therefore, the data processing unit, the signal processing unit, the receiver and the transmitter need at least 7 types of direct current power supplies, and the specific power supply requirements are shown in table 1.
TABLE 1 Secondary Radar DC power supply demand table
It can be seen from the table that there are 5 voltage values of the 7 varieties of power supplies, which are +5V, +12V, -12V, +24V and +50V, respectively, wherein there are 2 power supplies of +5V and 2 power supplies of-12V, which mainly means that the receiver has a low ripple requirement on the power supplies, and the low noise level requirement of the receiver can be guaranteed only by using the low ripple power supplies, and it can be seen from table 1 that the 3 varieties of power supplies used by the receiver are low ripple power supplies, the ripple requirement is less than 10mV, and the ripple requirements of other power supplies are less than 50mV, so that the variety of the dc power supply is increased from 5 to 7, and therefore 7 power supply units are needed, wherein there are two types of ripple of +5V power supplies, namely 10mV and ripple of 50mV, and there are also two types of ripple of-10 mV and ripple of 50 mV.
The power supply module is used for converting an externally supplied 220V single-phase alternating current power supply into various required direct current power supplies. Depending on the requirements of the power supply, the power supply can be divided into two categories: linear power supplies and switching power supplies. The advantages of the linear power supply: the circuit is simple, with low costs, the reliability is high, the noise is low, transient response is fast, the shortcoming: low efficiency, large volume and weight, and narrow input voltage range; the switch power supply has the advantages of being opposite to the linear power supply: high efficiency, small volume, light weight, wide input voltage range, high power density, and the following disadvantages: the circuit is relatively complex and noisy. Due to the demands of miniaturization and high efficiency of electronic equipment, a switching power supply is generally adopted as a power supply under the condition of no special requirement. The power supply design of the secondary radar is mainly a switching power supply, but due to the requirement of a receiver on low ripple of the power supply, linear power supplies are adopted for the 3 power supply units used by the receiver, wherein the varieties of the power supply units are +5V (ripple 10mV), +12V (ripple 10mV), -12V (ripple 10 mV). In addition, the transmitter of the secondary radar is an all-solid-state transmitter, the final power amplifier unit forms a final transmitting signal after power synthesis of 4 final power amplifier tubes, and the function of stepping controllable (attenuating) of the output power of the transmitter is realized by turning off 1 or more final power amplifier tubes. Therefore, the transmitter totally uses 4 power supply unit varieties, wherein the first power supply unit outputting +5V (with a ripple of 50mV) supplies power to a time sequence control circuit in the transmitter, and is not a power amplifier tube bias and power supply source, and the power-up of +5V (with a ripple of 50mV) does not cause the work of the power amplifier tube of the transmitter; the power-on time of 3 power supplies of-12V (ripple 50mV), +24V (ripple 50mV) and +50V (ripple 50mV) output by the three power supply units in the second group of power supplies can be controlled to achieve the purpose of protecting the power amplifier tube of the transmitter.
Therefore, in order to protect the transmitter, 7 power supply units corresponding to 7 kinds of power supplies of the secondary radar need to be divided into two groups, the first group of power supplies comprises a power supply unit needing to be powered up first, the power supply unit is used by a data processing unit, a signal processing unit, a receiver (excitation source) and a transmitter timing control circuit, the output voltage comprises +5V (ripple 50mV), +5V (ripple 10mV), +12V (ripple 10mV), -12V (ripple 10mV), and 4 power supply units in total, the second group of power supplies is a power supply unit needing to be powered up in a delayed mode, and the power supply unit is used for the work of a power amplifier tube in the transmitter and comprises 3 power supply units of-12V (ripple 50mV), +24V (ripple 50mV), and +50V (ripple 50 mV). To facilitate the one-key on-off function, 7 power supply units are integrated into one power supply assembly. According to the requirement of protecting a transmitter, when a secondary radar is started, a first group of power supplies are powered on first to complete the power-on of a data processing unit, a signal processing unit and a receiver, although the transmitter also uses a +5V (ripple wave 50mV) power supply, only a time sequence control circuit in the transmitter is powered on, and power amplifier tubes in a preceding power amplifier unit and a final power amplifier unit are not powered on, so that the power amplifier tubes cannot work and cannot be damaged. The power supply unit (hereinafter referred to as +5V power supply unit) with the output of +5V (ripple 50mV) in the first group of power supplies is used as the switching electric control power supply of the second group of power supplies, because the +5V power supply unit is not only the most important power supply variety, the power-on of the power supply unit marks that the data processing unit and the signal processing unit work normally, the control circuit in the receiver also works normally, and the rated current of the +5V power supply unit is the largest of 4 power supply units in the first group of power supplies and is 25A, therefore, the voltage amplitude change during power-on and power-off is relatively smooth, and the power supply unit is suitable for being used as a control signal to control the power-on and power-off of the.
The secondary radar one-key startup and shutdown realizes sequential power on and off of a plurality of power supply units through one power supply main switch. The secondary radar provides a power supply main switch externally to control the on-off of a 220V single-phase alternating current power supply, the power supply main switch is switched on when the secondary radar is started, the 220V single-phase alternating current power supply is switched in, and the power supply main switch is pulled down when the secondary radar is switched off to cut off the 220V single-phase alternating current power supply. After the machine is started, direct current is input to the secondary radar by 7 power supply units, direct current is directly input by 4 power supply units in the first group of power supplies and is output by a direct current power supply which meets the index requirement after passing through a DC-DC conversion circuit, and the output is used by a data processing unit, a signal processing unit, a receiver and a time sequence control circuit, so that the 4 power supply units of the first group of power supplies are supplied with power simultaneously. The relays are added to the direct-current input ends of 3 power supply units in the second group of power supplies, and the 3 relays are controlled by the +5V power supply unit of the first group of power supplies (the +5V power supply output by one power supply unit), and the specific circuit is shown in fig. 1. V on the left of FIG. 1IN(+5V)Is the +5V (ripple 50mV) voltage, V, output by the power supply units in the first set of power suppliesOUT(+5V)Is the voltage output by the DC-DC conversion circuit; v on the right side of FIG. 1IN(-12V)、VIN(+24V)、VIN(+50V)The (-12V, +24V, +50V power) is output by the second group of power. After the power supply is started, when the +5V power supply output by the first group of power supplies is lower than 4.9V, the single-pole double-throw relays K1, K2 and K3 are in a release state (the 1-2 end is disconnected and the 1-3 end is connected), the second group of power supplies are respectively connected to loads R1, R2 and R3 and are not subjected to a DC-DC conversion circuit, so that the second group of power supplies do not have direct current output to a preceding stage power amplification unit and a final stage power amplification unit; only when the first group of power supplies outputs +5When the V power supply reaches 4.9V or above, the pull-in single-pole double-throw relays K1, K2 and K3 (the 1-2 ends are connected and the 1-3 ends are disconnected) are pulled in, and at the moment, the direct current of the second group of power supplies is connected into a DC-DC conversion circuit to generate required direct current power supply output for a front-stage power amplification unit and a final-stage power amplification unit in a transmitter, and the transmitter starts to work. When a power supply main switch is turned off, when a +5V power supply is reduced to +4.9V, single-pole double-throw relays K1, K2 and K3 are released (a 1-2 end is turned off and a 1-3 end is turned on), a second group of power supplies are turned off from a DC-DC conversion circuit and are respectively turned on with absorption loads R3, R4 and R5, 3 power supply units of the second group of power supplies do not have direct current output, power amplification tubes in a preceding stage power amplification unit and a final stage power amplification unit stop working, a transmitter is guaranteed to be turned off before a time sequence and an excitation signal disappear, and when the +5V power supply is reduced to be lower than +4.75V, a data processing unit, a signal processing unit and a receiver stop working.
The one-touch method is important for relay control, which is sensitive to bias signals in addition to meeting the rated load requirements of the contacts. In the power-on and power-off processes, the +5V power supply unit serving as a control power supply has a process that the voltage gradually rises to a full amplitude when being powered on, and has a process that the voltage gradually falls to a zero level when being powered off. The specific one-key power on/off timing diagram is shown in fig. 2. In order to improve the protection capability of the transmitter, when the +5V power supply is expected to rise from 0V to 4.9V during starting, the relay is attracted, and the direct current output of the second group of power supplies is started; when the power supply of +5V is reduced to 4.9V during shutdown, the relay is released, and the direct current output of the second group of power supplies is cut off. The voltage amplitude of the +5V power supply is within the range of 5V +/-10% (+ 4.75V- +5.25V), the data processing unit, the signal processing unit and the receiver can keep a normal working state, so that the data processing unit, the signal processing unit and the receiver enter the normal working state when the +5V power supply rises from 0V to +4.75V when the power supply is started, the power supply is started by a second group of power supplies used by the transmitter power amplifier tube after the power supply continues rising to +4.9V, and the transmitter power amplifier tube enters the working state; on the contrary, when the power supply of the +5V is reduced to +4.9V during shutdown, the power supply of the transmitter power amplifier tube is firstly turned off, the transmitter power amplifier tube stops working, and the data processing unit, the signal processing unit and the receiver stop working after the power supply of the transmitter power amplifier tube continuously reduces to + 4.75V. As long as the filter capacitor of the +5V power supply is reasonably selected, the data processing unit, the signal processing unit and the receiver can be ensured to enter a stable state within the rise time (Tr) of the power supply rising from +4.75V to +4.9V when the power supply is started, the power supply is relatively simple to shut down, as long as the power supply of the power amplifier tube (the front-stage power amplifier unit and the final-stage power amplifier unit) of the transmitter is ensured to be powered off first, the power supply of the data processing unit, the signal processing unit and the receiver is powered off later, and the requirement on the fall time (Tf. In order to improve the sensitivity of the relay to the power supply voltage, the action coil of the relay is driven by a triode, and a specific circuit is shown in figure 3: a 5V relay is adopted, two ends of a coil of the relay are respectively connected with a +5V power supply unit and a collector electrode (end c) of a triode, a +5V power supply is connected with a base electrode of the triode through a divider resistor RP, R1 and R2, when the bias voltage of the base electrode of the triode is more than 0.7V, the triode is conducted, and the relay is attracted (the end 1-2 is connected and the end 1-3 is disconnected); and on the contrary, when the bias voltage of the base electrode is less than 0.7V, the triode is cut off, and the relay is released (the 1-2 end is disconnected, and the 1-3 end is connected). In order to meet the requirements that the relay is closed when the voltage output by the +5V power supply unit is higher than +4.9V and the relay is released when the voltage is lower than +4.9V, the base electrode bias voltage of the triode is required to be higher than 0.7V when the voltage is higher than +4.9V, so that the ratio of (RP + R1) to R2 is 6:1, namely when R2 is 2k omega and (RP + R1) is 12k omega, as long as the voltage output by the +5V power supply unit is higher than +4.9V, the base electrode bias voltage of the triode is higher than 0.7V, and the triode is conducted. According to the voltage division ratio, when the voltage output by the +5V power supply unit is reduced to +4.75V or lower, the base bias voltage of the triode is 0.68V or lower and is lower than 0.7V, and the triode is turned off. In consideration of the individual difference of the triodes, a variable resistor RP is used in the base-biased voltage division circuit, the minimum resistance value of the variable resistor RP is 0 omega, the maximum resistance value of the variable resistor RP is 2k omega, R1 is 11k omega, therefore, the resistance value of (RP + R1) is adjustable between 11k omega and 13k omega, and R2 is 2k omega. In the specific debugging process, the initial resistance value of the variable resistor RP is set at a position of 1k omega, a voltage stabilizing source is used for replacing a +5V power supply unit to supply power to a circuit, and when the output voltage of the voltage stabilizing source is adjusted to +4.9V, the resistance value of the variable resistor RP is finely adjusted (reduced), so that the triode is conducted and the relay is attracted; when the output voltage of the voltage stabilizing source is adjusted to +4.75V, the resistance value of the variable resistor RP is finely adjusted (increased), so that the triode is cut off, the relay is released, and the proper resistance value of the variable resistor RP can be selected and fixed after one to two times of repetition.
Therefore, the present embodiment provides an implementation method of a one-key switch device for a secondary radar according to the above working principle, including the following steps:
(1) integrating a plurality of power supply units which need to supply power for a secondary radar in the same power supply assembly, and grouping the plurality of power supply units according to the sequence of power-up and the sequence of power-down of a data processing unit, a signal processing unit, a receiver and a transmitter to obtain a first group of power supplies and a second group of power supplies, wherein the first group of power supplies are used for respectively supplying power in advance and delaying power-down for a time sequence control circuit in the data processing unit, the signal processing unit, the receiver and the transmitter, and the second group of power supplies are used for delaying power supply and delaying power-down for a preceding power amplification unit and a final power amplification unit in the transmitter;
(2) connecting the first group of power supplies and the second group of power supplies with a single-phase alternating current power supply through a power supply main switch;
(3) selecting a power supply unit from the first group of power supplies as a control power supply, and connecting the control power supply with the second group of power supplies through a relay drive circuit and a relay;
(4) the method comprises the following steps that a power supply main switch is turned on, a first group of power supplies supply power for a data processing unit, a signal processing unit, a receiver and a time sequence control circuit in a transmitter, a control power supply in the first group of power supplies outputs voltage to a relay driving circuit, the output voltage controls the conduction of a triode in the relay driving circuit so as to drive the attraction of a relay, and the conduction of a second group of power supplies and a pre-stage power amplification unit and a final-stage power amplification unit in the transmitter is controlled, wherein the voltage value output by the control power supply when the relay is attracted is larger than the voltage value output by the control power supply when the data processing unit, the signal processing unit, the receiver and the time sequence control circuit in the transmitter are electrified, so that the control of;
(5) and closing a power supply main switch, stopping a triode in the relay driving circuit, releasing the relay, stopping the pre-stage power amplification unit and the final-stage power amplification unit, wherein the voltage value output by the control power supply when the relay is released is larger than the voltage value output by the control power supply when the time sequence control circuits in the data processing unit, the signal processing unit, the receiver and the transmitter are powered off, so that the control of the power failure in advance of the second group of power supplies is realized. The relay is a 5V relay, the control power supply is used for converting voltage output by the single-phase alternating-current power supply into 5V direct-current voltage, and the control power supply is a power supply unit connected with a time sequence control circuit in the transmitter.
The method provided by the invention can simplify the operation of secondary radar equipment and improve the availability and reliability of the equipment, is not limited to the secondary radar equipment, can be used for protecting pulse wave power amplifier circuits with requirements on pulse width and duty ratio, and is also suitable for the condition that multiple kinds of power supplies in one equipment need to be sequentially powered on and powered off.
The scope of the present invention includes, but is not limited to, the above embodiments, and the present invention is defined by the appended claims, and any alterations, modifications, and improvements that may occur to those skilled in the art are all within the scope of the present invention.
Claims (6)
1. The utility model provides a key switching on and shutting down device for secondary radar, includes secondary radar, power supply module and power master switch, power supply module is connected with single phase alternating current power supply through power master switch, power supply module is connected with secondary radar, secondary radar is including the data processing unit, signal processing unit, receiver and the transmitter that connect gradually, the transmitter includes interconnect's sequential control circuit, preceding stage power amplifier unit and last stage power amplifier unit, its characterized in that: the power supply assembly comprises a first group of power supplies and a second group of power supplies, the first group of power supplies are respectively connected with the data processing unit, the signal processing unit, the receiver and the time sequence control circuit, the second group of power supplies are respectively connected with the preceding stage power amplification unit and the final stage power amplification unit, the first group of power supplies are connected with the relay driving circuit, the relay driving circuit is connected with the relay, and the relay is connected with the second group of power supplies;
the power supply unit comprises a plurality of power supply units, the power supply units are used for converting a single-phase alternating-current power supply into different direct-current power supplies so as to supply power to a secondary radar, the relay driving circuit and the relay are respectively provided with a plurality of voltage division circuits and triodes, one power supply unit in the first group of power supplies is respectively connected with the voltage division circuits, the voltage division circuits are connected with the triodes, the triodes are connected with the relay, and the power supply units in the second group of power supplies are respectively connected with a preceding stage power amplification unit and a final stage power amplification unit through the relay;
the voltage dividing circuit comprises a variable resistor RP, a resistor R1 and a resistor R2, one end of the variable resistor RP is connected with the output end of one power supply unit in the first group of power supplies, the other end of the variable resistor RP is connected with one end of the resistor R1, the other end of the resistor R1 is respectively connected with the base of the triode and one end of the resistor R2, the other end of the resistor R2 and the emitter of the triode are both connected with a ground wire, the collector of the triode is connected with one end of the coil of the relay, the other end of the coil of the relay is connected with the output end of one power supply unit in the first group of power supplies, the common contact of the relay is connected with the power supply unit in the second group of power supplies, the normally closed contact of the relay is connected with the ground wire through a resistor, and the normally open contact of the relay is connected with the preceding stage power amplification unit and the final stage power amplification unit.
2. The one-touch switch device for secondary radar according to claim 1, wherein: the power supply system is characterized by further comprising a plurality of DC-DC conversion circuits, the first group of power supplies are respectively connected with the data processing unit, the signal processing unit, the receiver and the time sequence control circuit in the transmitter through the DC-DC conversion circuits, the second group of power supplies are connected with the preceding power amplification unit and the final power amplification unit through the DC-DC conversion circuits, one end of the variable resistor RP is connected with the DC-DC conversion circuit connected with the output end of one power supply unit in the first group of power supplies, and the normally open contact of the relay is connected with the preceding power amplification unit and the final power amplification unit through the DC-DC conversion circuits.
3. The one-touch switch device for secondary radar according to claim 2, wherein: the first group of power supplies comprise four power supply units, one power supply unit is used for supplying power for the data processing unit, the signal processing unit and the time sequence control circuit, the power supply unit is connected with the power supply unit in the second group of power supplies through the relay driving circuit and adopts a switch power supply, three power supply units are used for supplying power for the receiver, the three power supply units adopt linear power supplies, and the relay is a 5V relay.
4. The one-touch switch device for secondary radar according to claim 3, wherein: the second group of power supply comprises three power supply units, the three power supply units all adopt a switching power supply, one power supply unit is used for controlling the on-off of a final power amplifier tube in the final power amplifier unit, one power supply unit is used for supplying power to a preceding power amplifier unit, and one power supply unit is used for supplying power to the final power amplifier unit.
5. A method for implementing the one-touch switch device for secondary radar according to claim 1, wherein: the method comprises the following steps:
(1) integrating a plurality of power supply units which need to supply power for a secondary radar in the same power supply assembly, and grouping the plurality of power supply units according to the sequence of power-up and the sequence of power-down of a data processing unit, a signal processing unit, a receiver and a transmitter to obtain a first group of power supplies and a second group of power supplies, wherein the first group of power supplies are used for respectively supplying power in advance and delaying power-down for a time sequence control circuit in the data processing unit, the signal processing unit, the receiver and the transmitter, and the second group of power supplies are used for delaying power supply and delaying power-down for a preceding power amplification unit and a final power amplification unit in the transmitter;
(2) connecting the first group of power supplies and the second group of power supplies with a single-phase alternating current power supply through a power supply main switch;
(3) selecting a power supply unit from the first group of power supplies as a control power supply, and connecting the control power supply with the second group of power supplies through a relay drive circuit and a relay;
(4) the method comprises the following steps that a power supply main switch is turned on, a first group of power supplies supply power for a data processing unit, a signal processing unit, a receiver and a time sequence control circuit in a transmitter, a control power supply in the first group of power supplies outputs voltage to a relay driving circuit, the output voltage controls the conduction of a triode in the relay driving circuit so as to drive the attraction of a relay, and the conduction of a second group of power supplies and a pre-stage power amplification unit and a final-stage power amplification unit in the transmitter is controlled, wherein the voltage value output by the control power supply when the relay is attracted is larger than the voltage value output by the control power supply when the data processing unit, the signal processing unit, the receiver and the time sequence control circuit in the transmitter are electrified, so that the control of;
(5) and closing a power supply main switch, stopping a triode in the relay driving circuit, releasing the relay, stopping the pre-stage power amplification unit and the final-stage power amplification unit, wherein the voltage value output by the control power supply when the relay is released is larger than the voltage value output by the control power supply when the time sequence control circuits in the data processing unit, the signal processing unit, the receiver and the transmitter are powered off, so that the control of the power failure in advance of the second group of power supplies is realized.
6. The method of claim 5, wherein the method further comprises: the relay is a 5V relay, the control power supply is used for converting voltage output by the single-phase alternating-current power supply into 5V direct-current voltage, and the control power supply is a power supply unit connected with a time sequence control circuit in the transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810447407.7A CN108566103B (en) | 2018-05-11 | 2018-05-11 | One-key switch device for secondary radar and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810447407.7A CN108566103B (en) | 2018-05-11 | 2018-05-11 | One-key switch device for secondary radar and implementation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108566103A CN108566103A (en) | 2018-09-21 |
| CN108566103B true CN108566103B (en) | 2020-06-02 |
Family
ID=63538631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810447407.7A Active CN108566103B (en) | 2018-05-11 | 2018-05-11 | One-key switch device for secondary radar and implementation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108566103B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111835377B (en) * | 2020-08-19 | 2022-02-22 | 展讯通信（上海）有限公司 | Signal transceiving device and power-on and power-off method of transmitting module thereof |
| CN112859675B (en) * | 2021-01-04 | 2021-11-30 | 北京无线电测量研究所 | Power-up sequence control device and method, phased array antenna and radar |
| CN112986969A (en) * | 2021-02-10 | 2021-06-18 | 南京恩瑞特实业有限公司 | One-key startup and shutdown system of phased array weather radar |
| CN112986933A (en) * | 2021-02-10 | 2021-06-18 | 南京恩瑞特实业有限公司 | Angle calibration system of phased array weather radar |
| CN113014075B (en) * | 2021-04-07 | 2022-09-06 | 智道网联科技(北京)有限公司 | Power supply circuit of power amplifier device of intelligent network equipment and control method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60121972A (en) * | 1983-12-01 | 1985-06-29 | Mitsubishi Electric Corp | Sequential start control system |
| JP3451347B2 (en) * | 1997-03-07 | 2003-09-29 | オムロン株式会社 | Power supply |
| CN103280968A (en) * | 2013-05-09 | 2013-09-04 | 中国电子科技集团公司第二十四研究所 | Timing control circuit of pulse power supply |
| CN103293986A (en) * | 2012-03-02 | 2013-09-11 | 深圳市蓝韵实业有限公司 | One-key startup and shutdown control device for digital X-ray photography system |
| CN204044655U (en) * | 2014-08-21 | 2014-12-24 | 南京俊禄科技有限公司 | Marine radar power control |
| CN204347491U (en) * | 2015-01-30 | 2015-05-20 | 哈尔滨理工大学 | Main frame and peripheral hardware switching sequence control device |
| CN205901639U (en) * | 2016-08-03 | 2017-01-18 | 国网福建省电力有限公司泉州供电公司 | Central air conditioning water pump motor's starting circuit |
| CN107942775A (en) * | 2017-10-18 | 2018-04-20 | 安徽蓝盾光电子股份有限公司 | A kind of laser radar intelligent starting and loss protecting system |
| CN107994563A (en) * | 2016-10-27 | 2018-05-04 | 上海东软医疗科技有限公司 | Power supply timing control circuit, magnetic resonance imaging system and power supply timing control method |
-
2018
- 2018-05-11 CN CN201810447407.7A patent/CN108566103B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60121972A (en) * | 1983-12-01 | 1985-06-29 | Mitsubishi Electric Corp | Sequential start control system |
| JP3451347B2 (en) * | 1997-03-07 | 2003-09-29 | オムロン株式会社 | Power supply |
| CN103293986A (en) * | 2012-03-02 | 2013-09-11 | 深圳市蓝韵实业有限公司 | One-key startup and shutdown control device for digital X-ray photography system |
| CN103280968A (en) * | 2013-05-09 | 2013-09-04 | 中国电子科技集团公司第二十四研究所 | Timing control circuit of pulse power supply |
| CN204044655U (en) * | 2014-08-21 | 2014-12-24 | 南京俊禄科技有限公司 | Marine radar power control |
| CN204347491U (en) * | 2015-01-30 | 2015-05-20 | 哈尔滨理工大学 | Main frame and peripheral hardware switching sequence control device |
| CN205901639U (en) * | 2016-08-03 | 2017-01-18 | 国网福建省电力有限公司泉州供电公司 | Central air conditioning water pump motor's starting circuit |
| CN107994563A (en) * | 2016-10-27 | 2018-05-04 | 上海东软医疗科技有限公司 | Power supply timing control circuit, magnetic resonance imaging system and power supply timing control method |
| CN107942775A (en) * | 2017-10-18 | 2018-04-20 | 安徽蓝盾光电子股份有限公司 | A kind of laser radar intelligent starting and loss protecting system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108566103A (en) | 2018-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108566103B (en) | One-key switch device for secondary radar and implementation method thereof | |
| KR101697443B1 (en) | Low-power consumption standby circuit device, air conditioner and control method for air conditioner | |
| CN107993892B (en) | Power supply control circuit suitable for electric locomotive contactor | |
| CN203868470U (en) | Energy-saving driving device of electromagnetic valve | |
| KR20140074866A (en) | A system and method of remotely connecting and disconnecting the auxiliary power supply of a frequency inverter for varirable capacity compressor employed in cooling systems | |
| CN105226808A (en) | Airborne electronic product intelligent emergent is powered secondary power supply | |
| CN109980600B (en) | Negative bias protection circuit powered by TR (transmitter-receiver) component | |
| EP3367559B1 (en) | Air conditioner | |
| CN108683374B (en) | Excitation shaft generator system start-stop logic control circuit and excitation shaft generator system | |
| CN204631665U (en) | Electromagnet power supply control device | |
| CN104714581B (en) | Based on the star loaded camera power supply system of transformer | |
| CN106230303A (en) | A kind of control circuit reducing the pulsation of spaceborne phased array pulse power input current | |
| CN108845611B (en) | Dry contact peripheral interface | |
| CN104133141A (en) | Load simulation equipment | |
| CN101711072A (en) | Constant current driving circuit, LED light source and locomotive light | |
| CN110850762A (en) | Remote control system and method for power supply power-on and power-off | |
| CN107123575B (en) | Power consumption control circuit of electric operating mechanism of circuit breaker | |
| CN110112704A (en) | Accessory power supply over under-voltage protection circuit | |
| CN220553391U (en) | Switch module for contactor and contactor module | |
| CN113053697B (en) | Relay control circuit, relay system and relay control method | |
| CN210156319U (en) | Contactor voltage control circuit and contactor system | |
| CN216902433U (en) | Low-power consumption electromagnet drive circuit | |
| CN220291892U (en) | Frequency conversion control circuit board and direct current cigarette machine | |
| CN219643653U (en) | Power supply switching circuit | |
| CN203398987U (en) | Large-power DC test power source soft-start device for automobile traction motor controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |