CN109917218A - Power-on and power-off test macro, method and the electrical equipment of electrical equipment - Google Patents
Power-on and power-off test macro, method and the electrical equipment of electrical equipment Download PDFInfo
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Abstract
The present invention provides power-on and power-off test macro, method and the electrical equipment of a kind of electrical equipment, wherein power-on and power-off test macro includes electronic switch, measure voltage & current device and controller etc., electronic switch is connected between power supply and circuit-under-test, controls the power-on and power-off of electrical equipment by controlling the on-off of electronic switch；Measure voltage & current device is used to detect the power-up state of the circuit-under-test of electrical equipment；The processor that the detection data of measure voltage & current device is sent to electrical equipment is carried out fault diagnosis by controller.The automation to the electrical testing up and down of electrical equipment is realized, and then improves testing efficiency and test accuracy rate, and easy to operate.Further, measure voltage & current device is automatically corrected by the way that self-test signal source circuit is arranged, improves test accuracy.Measure voltage & current device includes multiway analog switch, switches circuit-under-test by multiway analog switch, realizes multiple circuit-under-tests and shares a measure voltage & current device, reduces costs.
Description
Technical Field
The invention relates to the field of testing of electrical equipment, in particular to a system and a method for testing power on and power off of the electrical equipment and the electrical equipment.
Background
The upper and lower electricity test of electrical equipment can fully expose the stability problem of product design, makes the designer discover the hidden danger in the product design. For example, the medical diagnostic equipment is subjected to power-on and power-off tests, the influence of power-on impact, the reliability of power-on reset, whether the power-off energy of the system is recovered to a normal state under the normal working condition and the like are detected. For the upper and lower electric test of electrical equipment, the test is finished manually at present, the repeatability, continuity, frequency and the like of the test are difficult to guarantee, and the analysis of the test result lacks data base, so that the test efficiency and the test accuracy are greatly influenced.
Disclosure of Invention
In view of this, the present invention provides a system and a method for testing power supply and power off of an electrical apparatus, and an electrical apparatus, which are intended to solve the drawbacks of manual testing.
In order to achieve the above object, the following solutions are proposed:
an electrical test system for electrical equipment comprising: a voltage converter, a voltage-to-current detector, an electronic switch, and a controller, wherein,
the voltage input end of the voltage converter is connected with the voltage output end of the electrical equipment, and the voltage converter is used for supplying power to the voltage and current detector, the electronic switch and the controller respectively;
the detection end of the voltage and current detector is connected with a circuit to be detected of the electrical equipment, and the output end of the voltage and current detector is connected with the controller;
the voltage output end of the electronic switch is connected with the power supply input end of the electrical equipment, the control end of the electronic switch is connected with the controller, and the controller controls the electrical equipment to be powered up and down by controlling the on-off state of the electronic switch;
the controller is also in communication connection with the processor of the electrical equipment and sends the data detected by the voltage and current detector to the processor of the electrical equipment for fault diagnosis.
Optionally, the power-on and power-off test system further includes: and the self-checking signal source circuit is connected with the voltage and current detector and is used for generating a standard signal and correcting the voltage and current detector.
Optionally, the voltage-current detector includes:
a plurality of sampling circuits, wherein each sampling circuit is connected with a tested circuit of the electrical equipment;
the output end of the voltage division attenuation circuit is connected with a controller of the upper and lower electric test systems;
the input end of the multi-channel analog switch is connected with each sampling circuit, and the output end of the multi-channel analog switch is connected with the input end of the voltage division attenuation circuit.
Optionally, the electronic switch includes: a relay and a drive circuit for the relay.
Optionally, the electrical device is: a medical diagnostic apparatus.
A power-on and power-off test method for electrical equipment, the power-on and power-off test system of any one of the above, the power-on and power-off test method comprising:
the electronic switch is controlled to be conducted, so that the electrical equipment is powered on;
acquiring power-on state data of a tested circuit of the electrical equipment, wherein the power-on state data comprises voltage and/or current;
analyzing whether the circuit to be tested has a fault according to the power-on state data;
and the electronic switch is controlled to be switched off, so that the electrical equipment is powered off.
Optionally, after the step of powering down the electrical equipment by controlling the electronic switch to be turned off, the method further includes:
assigning the number of tests completed on the electrical equipment to be equal to + 1;
and judging whether the number of times of testing completed on the electrical equipment is equal to the set number of times of testing, if not, executing the step of electrifying the electrical equipment by controlling the electronic switch to be conducted.
An electrical equipment comprises any one of the above-mentioned power-on and power-off test systems. The upper and lower electric test systems are integrated in the electrical equipment, expensive special test equipment is not needed, the test cost can be reduced, and after-sale personnel can conveniently position the fault of the electrical equipment.
Optionally, the electrical device is a medical diagnostic device.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the upper and lower electric test system, the method and the electric equipment of the electric equipment provided by the technical scheme are characterized in that the upper and lower electric test system comprises an electronic switch, a voltage and current detector, a controller and the like, wherein the electronic switch is connected between a power supply and a tested circuit and controls the upper and lower electric of the electric equipment by controlling the on and off of the electronic switch; the voltage and current detector is used for detecting the power-on state of a tested circuit of the electrical equipment; and the controller transmits the detection data of the voltage and current detector to a processor of the electrical equipment for fault diagnosis. The automation of the upper and lower electric test of the electrical equipment is realized, the test efficiency and the test accuracy are further improved, and the operation is simple.
Furthermore, the voltage and current detector is corrected by arranging the self-checking signal source circuit, so that automatic correction can be realized, the operation is convenient, and the test accuracy is favorably improved.
Still further, the voltage current detector comprises a plurality of analog switches, and the voltage current detector is switched among the tested circuits through the plurality of analog switches, so that the voltage current detector is shared by a plurality of tested circuits, and the cost is reduced.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electrical testing system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a voltage-current detector according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another power-on and power-off test system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a voltage-current detector according to an embodiment of the present invention;
FIG. 5 is a flowchart of a power-on and power-off testing method according to an embodiment of the present invention;
fig. 6 is a flowchart of another power-on and power-off testing method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present embodiment provides a power-on and power-off test system for electrical equipment, referring to fig. 1, the power-on and power-off test system includes: a voltage converter 11, a voltage current detector 12, an electronic switch 13 and a controller 14. Wherein,
the voltage input end of the voltage converter 11 is connected with the voltage output end of the electrical equipment 21, and the voltage converter 11 respectively supplies power to the voltage current detector 12, the electronic switch 13 and the controller 14. The power supply of the power supply and discharge test system provided in this embodiment is supplied from the electrical equipment 21. The voltage output end of the electrical equipment 21 may be specifically an output end of a power adapter of the electrical equipment 21, an output end of a lithium battery module, or an output end of a switching power supply. For example, when the medical diagnostic apparatus is in a power-off state, the standby power supply of the switching power supply always has voltage output, and is in a standby state, so that power can be supplied to the power-on and power-off test system.
The detection end of the voltage-current detector 12 is connected with the circuit to be tested of the electrical equipment 21, and the output end of the voltage-current detector 12 is connected with the controller 14. The circuit under test of the electrical device 21 may be, but is not limited to, a power circuit and/or a critical signal network circuit, etc.
When the tested circuit is more, the acquisition circuit can be shared by setting a plurality of analog switches. Referring to fig. 2, the voltage current detector 12 includes: a plurality of sampling circuits 121, a multi-way analog switch 122, and a voltage division attenuation circuit 123. Each sampling circuit 121 is connected with a tested circuit of the electrical equipment 21; the input end of the multi-path analog switch 122 is respectively connected with each sampling circuit 121, and the output end of the multi-path analog switch 122 is connected with the input end of the voltage division attenuation circuit 123; the output end of the voltage division attenuation circuit 123 is connected with the controller 14 of the upper and lower electric test system.
The multi-path analog switch 122 can complete a circuit switching function, and is finally switched into a path of signal of the sampling circuit 121 to be input to the controller 14. For the circuit to be tested whose voltage is higher than that recognizable by the controller 14, it is necessary to divide the voltage by the voltage division attenuation circuit 123 and input the reduced voltage to the controller 14. The multi-path analog switch 122 switches the tested circuit, so that a plurality of tested circuits share one voltage current detector 12, and the cost is reduced.
The voltage output terminal of the electronic switch 13 is connected to the power input terminal of the electrical equipment 21. The control end of the electronic switch 13 is connected with the controller 14. The controller 14 controls the power on and off of the electrical appliance 21 by controlling the on and off of the electronic switch 13. In one embodiment, the electronic switch 13 is implemented by a relay, which is driven by a driving circuit due to the small output current of the controller. Illustratively, the relay is driven by a darlington tube.
The controller 14 is also connected to the processor of the electrical equipment 21 in communication, and transmits the data detected by the voltage/current detector 12 to the processor of the electrical equipment 21 for fault diagnosis. The processor of the electrical equipment 21 is used for fault diagnosis, so that the functional requirements on the controller 14 are reduced, and the cost is further reduced.
The power-on and power-off test system of the electrical equipment provided by the embodiment comprises an electronic switch 13, a voltage and current detector 12, a controller 14 and the like, wherein the electronic switch 13 is connected between a power supply and a circuit to be tested, and the power-on and power-off of the electrical equipment 21 is controlled by controlling the on-off of the electronic switch 13; the voltage current detector 12 is used for detecting the power-on state of the circuit to be tested of the electrical equipment 21; the controller 14 transmits the detection data of the voltage current detector 12 to the processor of the electrical appliance 21 for fault diagnosis. The automation of the upper and lower electric test of the electrical equipment 21 is realized, the test efficiency and the test accuracy are further improved, and the operation is simple.
The present embodiment provides another upper and lower electrical test system, which further includes a self-test signal source circuit 15 for calibrating the voltage and current detector 12, as compared with the upper and lower electrical test system shown in fig. 1. Referring to fig. 3, the self-test signal source circuit 15 is connected to the detection terminal of the voltage current detector 12. The self-test signal source circuit 15 generates a standard signal, which is input to the controller 14 through the voltage current detector 12. Presetting a standard voltage value output when the voltage-current detector 12 acquires the standard signal, and adjusting the voltage-current detector 12 to make the actual voltage value output by the voltage-current detector 12 acquiring the standard signal equal to the preset standard voltage value, thereby completing the correction of the voltage-current detector 12. The voltage and current detector 12 is corrected by arranging the self-checking signal source circuit 15, so that automatic correction can be realized, the operation is convenient, and the test accuracy is favorably improved.
Referring to fig. 4, the voltage current detector 12 includes a digital potentiometer R1 and a resistor R2, the voltage current detector 12 divides the output voltage by the digital potentiometer R1 and the resistor R2, and the voltage division on the digital potentiometer R1 is adjusted to realize the correction of the voltage current detector 12. Specifically, if the actual voltage value output by the voltage-current detector 12 is higher than the standard voltage value, the access resistance value of the digital potentiometer R1 is decreased; if the actual voltage value output by the voltage-current detector 12 is lower than the standard voltage value, the access resistance value of the digital potentiometer R1 is increased.
The embodiment provides a power-on and power-off testing method for electrical equipment, which is based on the power-on and power-off testing system shown in fig. 1 or fig. 3, and referring to fig. 5, the power-on and power-off testing method comprises the following steps:
s51: the electronic switch 13 is controlled to conduct so that the electrical apparatus 21 is powered on.
S52: power-on state data of the circuit under test of the electrical appliance 21 is acquired.
The power-up status data in this embodiment comprises a voltage and/or a current.
S53: and analyzing whether the tested circuit has faults or not according to the power-on state data.
The detection criterion is preset, for example, the range of ± 5% of the theoretical voltage value of the power supply voltage is used as the standard voltage range of the power supply voltage, if the voltage of the power supply voltage is detected to be within the standard voltage range, the power supply circuit is considered to be normal, and if not, the power supply circuit is considered to have a fault.
S54: the electrical device 21 is powered down by controlling the electronic switch 13 to open.
In order to perform a repetitive test on the power-on and power-off of the electrical equipment, the test times are preset, and referring to fig. 6, after the step of powering off the electrical equipment 21 by controlling the electronic switch 13 to be turned off, the method may further include the steps of:
s65: the given value indicates the number of tests C completed for the electrical appliance 21, which is the number of tests C +1 completed for the electrical appliance 21.
S66: and judging whether the number of testing times C completed on the electrical equipment 21 is equal to the set number of testing times C1, if not, executing the step of electrifying the electrical equipment 21 by controlling the electronic switch 13 to be switched on, and if so, ending the step.
The embodiment also provides an electrical device, which comprises the upper and lower electrical testing systems shown in fig. 1 or fig. 3. The upper and lower electric test systems are integrated in the electrical equipment, expensive special test equipment is not needed, the test cost can be reduced, and after-sale personnel can conveniently position the fault of the electrical equipment. The electrical equipment provided by the embodiment can be medical diagnosis equipment.
Optionally, the medical diagnostic apparatus may include a user interface, which may include an input unit (such as a keyboard), a voice input device (such as an apparatus having a voice recognition function including a microphone), and/or a voice output device (such as a speaker, a headset, etc.). Optionally, the user interface may also include a standard wired interface and/or a wireless interface.
Optionally, the medical diagnostic apparatus may further include a display, which may also be referred to as a display screen or display unit. In some embodiments, the display device can be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (organic light-Emitting Diode) display, and the like. The display is used for displaying a visualized user interface. The test sequence editing interface may be specifically displayed, and in a specific embodiment, the test sequence editing interface lists existing test cases, such as power supply voltage test cases, critical signal test cases, and the like. A user only needs to drag each test case icon on the test sequence editing interface and connect all the icons to create a test sequence. For different test requirements, a user can freely set and store corresponding test sequences.
Optionally, the medical diagnostic apparatus further comprises a touch sensor. The area provided by the touch sensor for the user to perform touch operation is referred to as a touch area. Further, the touch sensor may be a resistive touch sensor, a capacitive touch sensor, or the like. The touch sensor may include not only a contact type touch sensor but also a proximity type touch sensor. Further, the touch sensor may be a single sensor, or may be a plurality of sensors arranged in an array, for example. The user can input identification information by touching the touch area or edit the test sequence on the test sequence editing interface.
The area of the display of the medical diagnostic apparatus may be the same as or different from the area of the touch sensor. Optionally, the display is stacked with the touch sensor to form a touch display screen. The device detects touch operation triggered by a user based on the touch display screen.
The medical diagnostic apparatus may further include an RF (Radio Frequency) circuit, a sensor, an audio circuit, and the like, which will not be described herein.
The above-described apparatus embodiments are merely illustrative, wherein the units described as separate components may or may not be physically separate. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
In this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. An electrical testing system for electrical equipment, comprising: a voltage converter, a voltage-to-current detector, an electronic switch, and a controller, wherein,
the voltage input end of the voltage converter is connected with the voltage output end of the electrical equipment, and the voltage converter is used for supplying power to the voltage and current detector, the electronic switch and the controller respectively;
the detection end of the voltage and current detector is connected with a circuit to be detected of the electrical equipment, and the output end of the voltage and current detector is connected with the controller;
the voltage output end of the electronic switch is connected with the power supply input end of the electrical equipment, the control end of the electronic switch is connected with the controller, and the controller controls the electrical equipment to be powered up and down by controlling the on-off of the electronic switch;
the controller is also in communication connection with the processor of the electrical equipment and sends the data detected by the voltage and current detector to the processor of the electrical equipment for fault diagnosis.
2. The power-on and power-off test system as recited in claim 1, further comprising: and the self-checking signal source circuit is connected with the voltage and current detector and is used for generating a standard signal and correcting the voltage and current detector.
3. The power-on and power-off test system as recited in claim 1, wherein the voltage-current detector comprises:
a plurality of sampling circuits, wherein each sampling circuit is connected with a tested circuit of the electrical equipment;
the output end of the voltage division attenuation circuit is connected with a controller of the upper and lower electric test systems;
the input end of the multi-channel analog switch is connected with each sampling circuit, and the output end of the multi-channel analog switch is connected with the input end of the voltage division attenuation circuit.
4. The power-on and power-off test system as recited in claim 1, wherein the electronic switch comprises: a relay and a drive circuit for the relay.
5. The power-on and power-off test system as claimed in any one of claims 1 to 4, wherein the electrical equipment is: a medical diagnostic apparatus.
6. An electrical testing method for electrical equipment, based on the electrical testing system as claimed in any one of claims 1 to 5, the electrical testing method comprising:
the electronic switch is controlled to be conducted, so that the electrical equipment is powered on;
acquiring power-on state data of a tested circuit of the electrical equipment, wherein the power-on state data comprises voltage and/or current;
analyzing whether the circuit to be tested has a fault according to the power-on state data;
and the electronic switch is controlled to be switched off, so that the electrical equipment is powered off.
7. The power-on and power-off test method as claimed in claim 6, further comprising, after the step of powering off the electrical equipment by controlling the electronic switch to be turned off:
assigning the number of tests completed on the electrical equipment to be equal to + 1;
and judging whether the number of times of testing completed on the electrical equipment is equal to the set number of times of testing, if not, executing the step of electrifying the electrical equipment by controlling the electronic switch to be conducted.
8. An electrical apparatus comprising the power-on and power-off test system as claimed in claims 1 to 4.
9. The electrical device of claim 8, wherein the electrical device is a medical diagnostic device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910362932.3A CN109917218B (en) | 2019-04-30 | 2019-04-30 | Power-on and power-off test system and method for electrical equipment and electrical equipment |
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| CN201910362932.3A CN109917218B (en) | 2019-04-30 | 2019-04-30 | Power-on and power-off test system and method for electrical equipment and electrical equipment |
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