CN109709850B - Power supply management method applied to portable inquiry machine - Google Patents
Power supply management method applied to portable inquiry machine Download PDFInfo
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- CN109709850B CN109709850B CN201811580660.6A CN201811580660A CN109709850B CN 109709850 B CN109709850 B CN 109709850B CN 201811580660 A CN201811580660 A CN 201811580660A CN 109709850 B CN109709850 B CN 109709850B
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Abstract
The invention relates to a power supply management method applied to a portable inquiry machine, which is characterized in that: the inquiry machine comprises power-off, self-checking, code configuration, inquiry and dormant working states; after the interrogator is started, the interrogator enters a self-checking state and automatically controls the time of the self-checking state; after the self-checking is finished, code configuration is not carried out within preset time, and the inquiry machine enters a dormant state; if the code configuration is required, automatically sleeping after the code configuration is finished for a period of time; and clicking an inquiry button to automatically control the working time of the inquiry state, and entering the sleep state after the inquiry is finished for a certain time. The invention strictly distinguishes the working state, designs the working flow of saving electricity of the corresponding working state, strictly controls the time of various working flows, adjusts the time of various states into a proper fixed value, shortens the operation time and greatly reduces the working current in the standby state.
Description
Technical Field
The invention relates to the field of interrogator management, in particular to a power supply management method applied to a portable interrogator.
Background
The portable interrogator is a powered, individual portable interrogator that can be used for identification in a near field IFF/ATC system. The portable interrogator power supply ensures normal operation at high and low temperatures, and has small capacitance because the portable interrogator power supply cannot be too heavy. In order to achieve the object of using the portable interrogator for a long period of time in practice, it is necessary to design a power management method to be applied to the portable interrogator, and to systematically reduce power consumption from the design.
The traditional power management method of the portable interrogator is simply divided into two states of power-off and work, and various functions are mixed, such as self-checking and time consumed by code configuration appear together in each inquiry process, so that unnecessary power consumption is increased.
The method comprises the steps of manually powering on an operator several minutes before a flight target arrives, powering on self-checking equipment, configuring codes, manually controlling an empty inquiry by the operator to be subjected to the flight target arrival, manually powering off after the inquiry result, and setting the time between the powering on and the powering off as the duration of one working state. In the conventional power management method of the portable interrogator, in order to wait for the arrival of a flight target, a part of time after power-on in an operating state is not performed, and only the portable interrogator stands by, and the power consumption is high during the standby time. In the whole process, human factors are very heavy, an operator must judge how long the aircraft is started in advance to ensure that the aircraft does not miss a flight target and consume more electric quantity, the duration of each working state depends on the judgment of the operator, the operator depends on experience too much, the operator with the same full power supply and the operator with the insufficient experience can greatly shorten the service time.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in view of the above-described problems, a power management method applied to a portable interrogator is provided.
The technical scheme adopted by the invention is as follows:
a power management method applied to a portable interrogator, a power management method applied to a portable interrogator, characterized in that: the inquiry machine comprises power-off, self-checking, code configuration, inquiry and dormant working states;
after the interrogator is started, the interrogator enters a self-checking state and automatically controls the time of the self-checking state;
after the self-checking is finished, code configuration is not carried out within preset time, and the inquiry machine enters a dormant state;
if the code configuration is required, automatically sleeping after the code configuration is finished for a period of time;
and clicking an inquiry button to automatically control the working time of the inquiry state, and entering the sleep state after the inquiry is finished for a certain time.
Preferably, the portable interrogator comprises a battery, a signal processing module, a front panel and a high-frequency transceiving component; the signal processing module is respectively connected with the battery, the front panel and the high-frequency transceiving component; the signal processing module comprises a power supply conversion circuit and a single chip circuit;
the battery is used as the power source of the whole interrogator circuit, the front panel is used as a control signal input unit, and the high-frequency transceiver module is used for transmitting and receiving signals.
As a preferred mode, in a sleep state, only the power supply conversion circuit and the single chip microcomputer circuit are powered on, the single chip microcomputer is in the sleep state, and other parts are completely powered off; the current at sleep is tested.
As a preferred mode, the power conversion circuit adopts a switch type power conversion chip LM2596, and the switch type power conversion chip converts +24V voltage into +5V voltage; the singlechip is an AT89S8252 singlechip.
Preferably, in the power-off state, the positive electrode of the battery is disconnected by the front panel switch before being input to the power conversion chip.
As a preferred mode, the self-test function only includes power-on self-test, the self-test time and the current are tested at the power-on self-test stage, the power consumption is calculated, and the power-on self-test time is 26 seconds.
Preferably, no code configuration is performed within 10 seconds after the power-on self-test is finished, and the interrogator automatically enters a dormant state.
Preferably, the code configuration phase completes the presetting of the mode M4, the mode M3, the mode M2 and the mode M1; and the code configuration adopts a time sequence control mode, in the code configuration stage, the code configuration time and the current are tested, the power consumption is calculated, the code configuration time is 30 seconds, and the sleep state is automatically entered after the code configuration is finished for 5 seconds.
Preferably, the interrogator automatically transmits in sequence according to the mode M4, the mode M3, the mode M2 and the mode M1 by clicking the interrogation button in the sleep state, and immediately informs the operator of the result of the interrogation after the interrogation by the interrogator is finished, and then the interrogator automatically enters the sleep state.
Preferably, the interrogator inquires in the order of the mode M4, the mode M3, the mode M2 and the mode M1 for 20 times, with a period of 1ms for one inquiry and a time of 50ms for one inquiry; obtaining a query result after 50ms in total;
and the inquiry result informs an operator through an LED and/or a buzzer, the operator is informed that the time is not more than 2 seconds, and after the duration time of the inquiry result is 2.9 seconds, the inquiry machine automatically enters the sleep mode.
Compared with the prior art, the beneficial effects of adopting the technical scheme are as follows:
(1) the invention strictly distinguishes five working states of power-off, self-checking, code configuration, inquiry and dormancy, and designs a working flow of saving electricity in the corresponding working state.
(2) The invention automatically controls the self-checking, code configuration and inquiry of the opening machine, strictly controls the time of each stage, adjusts the time of each state to a proper fixed value and shortens the operation time.
(3) The invention can automatically enter the dormant stage after the power-on self-test, the code configuration and the inquiry of the inquiry machine, thereby greatly reducing the working current in the standby state.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
fig. 2 is a schematic diagram of an AT89S8252 single chip microcomputer and peripheral circuits thereof according to an embodiment of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, a power management method applied to a portable interrogator, characterized in that: the inquiry machine comprises power-off, self-checking, code configuration, inquiry and dormant working states;
after the interrogator is started, the interrogator enters a self-checking state and automatically controls the time of the self-checking state;
after the self-checking is finished, code configuration is not carried out within preset time, and the inquiry machine enters a dormant state;
if the code configuration is required, automatically sleeping after the code configuration is finished for a period of time;
and clicking an inquiry button to automatically control the working time of the inquiry state, and entering the sleep state after the inquiry is finished for a certain time.
In a preferred embodiment, the portable interrogator comprises a battery, a signal processing module, a front panel and a high-frequency transceiving component; the signal processing module is respectively connected with the battery, the front panel and the high-frequency transceiving component; the signal processing module comprises a power supply conversion circuit and a singlechip circuit, and the singlechip comprises a singlechip and a peripheral circuit thereof;
the battery is used as the power source of the whole interrogator circuit, the front panel is used as a control signal input unit, and the high-frequency transceiver module is used for transmitting and receiving signals.
The front panel comprises a button and an eight-bit dot-matrix digital display, the button switch of the front panel is OFF, and the equipment is in a power-OFF state; the button switch of the front panel is set to be ON, the equipment is powered ON for self-checking, and if the equipment is not operated within a period of time after the self-checking is finished, the equipment automatically enters the dormancy state; if the code configuration operation is carried out on the front panel within a period of time after the self-checking is finished, the equipment automatically enters the dormancy within a period of time after the operation is finished; if the inquiry button is clicked on the front panel, the equipment inquires about empty, the decoding is successful, and the equipment automatically enters the sleep mode after the operator is informed; when the device is not used for a long time, the button switch of the front panel is set to be OFF, and the device is recovered to be in a power-OFF state. The control of these time sequences is realized in a single chip microcomputer. The time duration for checking all items in sequence is 21 seconds, plus 10 seconds of waiting, and the time taken for no modification is 31 seconds. The DC power supply is used for replacing a battery for testing, and the current of the power-on self-test is about 630 mA. The power consumption calculated is 5.4 mAh.
In a preferred embodiment, in the sleep state, only the power supply conversion circuit and the single chip microcomputer circuit are powered on, the single chip microcomputer is in the sleep state or the power-down state, and other parts are completely powered off; the current at sleep is tested. The power supply conversion circuit is realized by adopting a switch type power supply conversion chip.
In a preferred embodiment, the power conversion circuit adopts a switch-type power conversion chip LM2596, and the switch-type power conversion chip converts +24V voltage into +5V voltage;
the singlechip circuit of the invention is shown in figure 2, wherein, the AT89S8252 singlechip and the peripheral circuit thereof independently supply power for the same group of +5V, and are converted from a battery through a power chip; the external interrupt INT0 (line number TrnctrlButton) of the single chip microcomputer is connected with the inquiry control button and is pulled high by using a resistor R25, and when the inquiry control button is clicked and the TrnctrlButton is set to be low, the AT89S8252 single chip microcomputer is awakened from a power-down state; the crystal oscillator XTAL2 selects 22.1184Mhz, and forms a clock circuit with two capacitors C62 and C63; j11 is a double-row seat pin used for loading the program of the single chip microcomputer; CR1, CR2, CR4, CR5, CR6, CR7 are resistance rows, are used for the signal isolation between singlechip and the external circuit. The peripheral circuit of the single chip microcomputer is shown in figure 2.
In a preferred embodiment, in the power-off state, the positive pole (DC +24V) of the battery is disconnected by the front panel switch before being input to the power conversion chip.
In a preferred embodiment, the self-test function only includes power-on self-test, and the power consumption is calculated by testing the self-test time and current in the power-on self-test stage, wherein the power-on self-test time is 26 seconds.
In a preferred embodiment, no code configuration is performed within 10 seconds after the power-on self-test is finished, and the interrogator automatically enters a dormant state.
In a preferred embodiment, the code configuration phase completes the presetting of mode M4, mode M3, mode M2, mode M1; and the code configuration adopts a time sequence control mode, in the code configuration stage, the code configuration time and the current are tested, the power consumption is calculated, the code configuration time is 30 seconds, and the sleep state is automatically entered after the code configuration is finished for 5 seconds.
In a preferred embodiment, the interrogator automatically transmits in sequence according to the mode M4, the mode M3, the mode M2 and the mode M1 by clicking the interrogation button in a sleep state, and after the interrogation of the interrogator is finished, regardless of whether a response signal is received or not, the interrogator informs an operator of the result of the interrogation after the interrogation is finished, and then the interrogator automatically enters the sleep state.
In a preferred embodiment, the interrogator interrogates the mode M4 for 20 times, the mode M3 for 10 times, the mode M2 for 10 times and the mode M1 for 10 times in the order of 1ms for one interrogation time and 50ms for interrogation time; obtaining a query result after 50ms in total;
and the inquiry result informs an operator through an LED and/or a buzzer, the operator is informed that the time is not more than 2 seconds, and after the duration time of the inquiry result is 2.9 seconds, the inquiry machine automatically enters the sleep mode.
In the empty inquiry of the modes M4, M3, M2 and M1, the responder must have the same mode as the one for receiving the inquiry signal and turn on the mode to respond, the responder receives the response signal and decodes the response signal, and informs the operator of the decoding result. The portable interrogator sequentially has a mode M4 of 20 times, a mode M3 of 10 times, a mode M2 of 10 times and a mode M1 of 10 times, and does not respond to an empty query in a cycle of about 1ms if the onboard transponder does not have any query mode or has any query mode but is not turned on. Whether the interrogator receives the response signal or not, the result of the inquiry is informed to the operator within a fixed time, and then the state is automatically returned to the sleep state.
And after the task is finished, the equipment is powered off. The sleep state is a normal state, the time of the self-test state, the code configuration state and the inquiry state after the power-on is strictly controlled, and the sleep state is automatically entered when the state is finished. The time in the above processes is controllable, for example, if a certain item in the power-on self-test has no result within a limited time, the item is regarded as a fault and cannot wait all the time; for example, the interrogation period ranges from 1000us ± 32us for a total of 50 times. All of the above times are set as the longest time.
In a preferred embodiment, as shown in fig. 1, the specific steps are:
step 1: the method comprises the following steps of distinguishing five states of power-off, self-checking, code configuration, inquiry and dormancy according to the functions of a portable inquiry machine, designing a power-saving working flow according to the five states, and designing power management in each state of the working flow in detail;
step 2: describing a power-off state;
and step 3: after power is turned on, the consumed time of the self-checking state is automatically controlled to reduce the working time and reduce the power consumption;
and 4, step 4: if code configuration is needed, time consumption is reduced and power consumption is reduced through time sequence control;
and 5: the power-down function based on the AT89S8252 single chip microcomputer enables the equipment to enter a long-term sleep state with low power consumption, so that the service time is greatly increased;
step 6: the time of the working state is reduced by automatically controlling the transmitting state, so that the power consumption is reduced;
and 7: the effectiveness of the invention was confirmed by calculation of power consumption and time of use tests in each state.
In a preferred embodiment, a power-saving work flow is designed by combining five states of power-off, self-test, code configuration, inquiry and dormancy of the portable inquiry machine.
a) The equipment is in an off state at ordinary times;
b) after power on, the power-on self-test is carried out for 26 seconds;
c) automatically entering dormancy if no code configuration is carried out within 10 seconds after the self-test is finished;
d) if the code needs to be configured, automatically sleeping within 5 seconds after the configuration is finished;
e) when the inquiry button is singly clicked in the dormant state, inquiring the null and informing an operator of the inquiry result, and then entering the dormant state again, wherein the fixed time is not more than 5 seconds;
f) and after the task is finished, the equipment is powered off.
In a preferred embodiment, in the power-off state, the positive (DC +24V) of the portable interrogator battery is disconnected at the front panel switch before the power conversion chip is input.
DC +24V is unchanged, the maximum capacity of the battery is 1000mAh, the maximum current is 1000mA, and if the maximum capacity of the battery is 700mAh after three years according to the calculation of 30% of the maximum electric quantity loss of the battery after three years.
In a preferred embodiment, due to time limitation, the equipment only has power-on self-test, each inspection is finished and is displayed on an eight-bit lattice digital display of the front panel, the time length of all the items is 21 seconds after the inspection is finished sequentially, and the time is 31 seconds after the inspection is added to 10 seconds of waiting. The DC power supply is used for replacing a battery for testing, and the current of the power-on self-test is about 630 mA. The power consumption calculated is 5.4 mAh.
In a preferred embodiment, if code configuration is required, it must be done within 10 seconds after power-on self-test is finished, requiring a combination of key presses and eight-bit dot-matrix digital display operation. The modification items relate to M3, M2, M1, in total 10 digital bits, each bit modifying the estimate, typically about 30 seconds, and the current at modification about 620 mA. The power consumption calculated is 5.1 mAh.
In a preferred embodiment, the invention adopts a switch type power supply conversion chip LM2596 to convert +24V into +5V, and the power supply is independently supplied to an AT89S8252 singlechip and auxiliary circuits thereof, and then the power supply of other parts is controlled by the AT89S 8252. When the sleep is carried out, all other parts are powered off, only the LM2596 singlechip, the AT89S8252 singlechip and accessory circuits thereof supply power, and the AT89S8252 singlechip is in a power-off state;
in a preferred embodiment, as shown in fig. 2, the AT89S8252 single chip and its associated circuits supply power to the same set of +5V, the external interrupt INT0 of the single chip is connected to the inquiry control button (line number tranctrl button), and when the inquiry control button is clicked, the AT89S8252 single chip is awakened.
The Power management register PCON.1 is used for controlling the singlechip to enter a Power-Down mode (Power Down), and the 2 nd bit PD from the last of the register is used for setting whether the singlechip enters the Power-Down mode or not. And setting the PD/PCON.1 to 1, and enabling the single chip microcomputer to enter a power-down mode.
Therefore, the circuit design idea is software sleep and hardware wake-up, and the specific circuit is shown in fig. 2.
The test was performed using a dc power supply instead of a battery, with a current of about 5.2mA when dormant.
In a preferred embodiment, the 4 inquiry modes M4, M3, M2, M1 are automatically transmitted in sequence, and then the inquiry result is notified to the operator through an LED lamp and a buzzer.
M4 queries 20 times continuously, M3, M2, M1 queries 10 times continuously, each with a query period of about 1ms, for a total of 50ms to obtain a query result, informing the operator that 2 seconds at most are needed, and then for a query result of 2.9 seconds, the device again sleeps for a total of about 5 seconds. The current is about 700mA when the inquiry is carried out, and the current is about 620mA when the inquiry is finished and the informing result is carried out, and the current is not different from the current when the code is configured. The power consumption for one complete query is calculated to be 0.86mAh, and 86mAh assuming that the idle query totals 100 times during sleep.
In a preferred embodiment, the current at rest is about 5.2mA, and the service time is calculated according to the maximum capacity of 1000mAh of the battery as follows:
(1000mAh-5.4mAh-5.1mAh-86mAh)÷5.2mA＝173h
the service time is calculated according to the maximum capacity of the battery after three years, namely 700 mAh:
(700mAh-5.4mAh-5.1mAh-86mAh)÷5.2mA＝116h
the requirements of the portable inquiry machine that the using time is not less than 48h and the inquiry times in the using time are not less than 80 times are met.
In a preferred embodiment, a portable interrogator battery of a certain type is tested with a nominal capacity of 1000mAh according to the objective of "the number of interrogations is not less than 80 times within a usage time of not less than 48 h". The test temperature is 20-32 ℃, and the humidity is 50-60%.
The test method is as follows:
a) starting up self-checking after the equipment is powered on;
b) code configuration is carried out within 10 seconds after the self-test is finished, and all variable items are modified;
c) inquiring 80 times within 48h after entering the dormancy;
d) after clicking the inquiry button once an hour, the device can still inquire normally after continuously testing for 24 h.
Therefore, by adopting the power management method, the service time of a certain type of portable inquiry machine is not less than 72h, and the inquiry times in the service time are not less than 104.
Through tests, the power management method disclosed by the invention is feasible.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed. Those skilled in the art to which the invention pertains will appreciate that insubstantial changes or modifications can be made without departing from the spirit of the invention as defined by the appended claims.
Claims (9)
1. A power management method for a portable interrogator, comprising: the inquiry machine comprises power-off, self-checking, code configuration, inquiry and dormant working states;
after the inquiry machine is started, entering a power-on self-test state and automatically controlling the time of the self-test state; the self-checking function only comprises power-on self-checking, and self-checking time and current are tested at the power-on self-checking stage to calculate power consumption;
after the self-checking is finished, code configuration is not carried out within preset time, and the inquiry machine enters a dormant state;
if the code configuration is needed, the code configuration stage completes the presetting of the mode M4, the mode M3, the mode M2 and the mode M1, and when the inquiry button is singly clicked in the sleep state, the inquiry machine automatically transmits in sequence according to the mode M4, the mode M3, the mode M2 and the mode M1; when all the modes are configured, the inquiry machine sets inquiry targets according to codes of the mode M4, the mode M3, the mode M2 and the mode M1 for 20 times, immediately informs an operator of an identification inquiry result after the inquiry machine identifies and inquires, and then automatically enters a sleep state; otherwise, clicking an inquiry button, automatically controlling the working time of the inquiry state, and entering the sleep mode after recognizing that the inquiry is finished for a certain time; and the code configuration adopts a time sequence control mode, and in the code configuration stage, the code configuration time and the current are tested, and the power consumption is calculated.
2. The power management method of claim 1, wherein the portable interrogator comprises a battery, a signal processing module, a front panel and a high frequency transceiver module; the signal processing module is respectively connected with the battery, the front panel and the high-frequency transceiving component; the signal processing module comprises a power supply conversion circuit and a single chip circuit;
the battery is used as the power source of the whole interrogator circuit, the front panel is used as a control signal input unit, and the high-frequency transceiver module is used for transmitting and receiving signals.
3. The power management method as claimed in claim 2, wherein in the sleep state, only the power conversion circuit and the single chip circuit are powered on, the single chip is in the sleep state, and other parts are all powered off; the current at sleep is tested.
4. The power management method applied to the portable interrogator as claimed in claim 3, wherein the power conversion circuit employs a switching power conversion chip LM2596 which converts +24V voltage into +5V voltage; the singlechip is an AT89S8252 singlechip.
5. The power management method as claimed in claim 2, 3 or 4, wherein in the power-off state, the positive electrode of the battery is disconnected by a switch of the front panel before being inputted to the power conversion circuit.
6. The power management method as claimed in claim 1, wherein the power-on self-test time is 26 seconds.
7. A power management method as claimed in claim 1, 2 or 3, wherein no code configuration is performed within 10 seconds after the power-on self-test is completed, and the interrogator automatically enters a sleep state.
8. The power management method as claimed in claim 1, wherein the code allocation time is 30 seconds, and the sleep state is automatically entered 5 seconds after the code allocation is finished.
9. As claimed in claim1The power supply management method applied to the portable inquiry machine is characterized in that an inquiry result is informed to an operator through an LED and/or a buzzer, the time for informing the operator is not more than 2 seconds, and after the duration time of the inquiry result is 2.9 seconds, the inquiry machine automatically enters the sleep mode.
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| KR101544466B1 (en) * | 2015-01-29 | 2015-08-13 | (주)에어포인트 | Power Control Method and Apparatus for Controlling Power Source Circuit of Portable Terminal |
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