CN112230131A - Slide switch assembly, switch position detection method and motor vehicle - Google Patents
Slide switch assembly, switch position detection method and motor vehicle Download PDFInfo
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- CN112230131A CN112230131A CN201910636416.5A CN201910636416A CN112230131A CN 112230131 A CN112230131 A CN 112230131A CN 201910636416 A CN201910636416 A CN 201910636416A CN 112230131 A CN112230131 A CN 112230131A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
Abstract
Disclosed are a slide switch assembly, a switch position detection method and a motor vehicle, the switch position detection method including: outputting, by a first detection circuit, a first detection signal indicating a state of selection or non-functional section selection of at least one functional section of a plurality of functional sections of a function selection device; receiving, by the micro control unit, a first detection signal, determining a position of the slide switch in the function selection device based on the first detection signal indicating a selection of at least one of the plurality of function sections of the function selection device; when the first detection signal indicates the non-function section selection state, controlling a second detection circuit to work, and outputting a second detection signal indicating the position of the sliding switch in the function selection device through the second detection circuit, wherein the second detection circuit is different from the first detection circuit and the second detection signal is different from the first detection signal; and receiving a second detection signal through the micro control unit, and determining the position of the sliding switch in the function selection device based on the second detection signal.
Description
Technical Field
The present disclosure relates to the field of electronic control, and more particularly, to a slide switch assembly, a switch position detection method, and a motor vehicle.
Background
With the wide application of electronic control technology in the civil and commercial fields, switch assemblies integrated with multiple functions are widely used in the fields of motor vehicle control, power distribution control and the like, which also puts higher requirements on the switch assemblies.
Current switch assemblies typically include a switch and a function selection device. In operation, a user operates the switch to effect selection of each functional module in the function selection device, and the switch assembly may determine the function currently selected by the user when the switch is in contact with the respective functional module. However, when the switch is in poor contact with the function selecting device, for example, when the switch cannot be directly contacted with the function selecting device due to freezing of lubricating oil between the switch and the function selecting device at low temperature, the switch is in an open load state relative to the function selecting device, and the switch assembly cannot acquire the position of the switch.
Therefore, there is a need for a switch assembly that is capable of detecting the position of the switch in the function selection device to determine the function currently selected by the user, both when the switch is in contact with the function selection device and when the switch is in an open-circuit loaded state with respect to the function selection device, and that has high detection accuracy and robustness.
Disclosure of Invention
In view of the above problems, the present disclosure provides a slide switch assembly, a switch position detection method, and a motor vehicle. With the sliding switch assembly provided by the present disclosure, when the sliding switch is in an open load state relative to the function selection device, the sliding switch assembly can still well detect the switch position, so that good function selection can be realized.
According to an aspect of the present disclosure, a sliding switch assembly is provided, the sliding switch assembly comprising a sliding switch and a function selection device, the function selection device having a plurality of function sections, the sliding switch sliding on the plurality of function sections to enable selection of a corresponding function section, the sliding switch assembly further comprising a switch detection device, the switch detection device comprising: a first detection circuit that outputs a first detection signal indicating a state of selection of at least one of a plurality of functional sections of the function selection device or selection of a non-functional section; a micro control unit receiving the first detection signal, determining a position of the slide switch in the function selection device based on the first detection signal indicating selection of at least one of the plurality of function sections of the function selection device; a second detection circuit that outputs a second detection signal indicating a position of the slide switch in the function selection device, the second detection circuit being different from the first detection circuit and the second detection signal being different from the first detection signal; when the first detection signal indicates a non-functional section selection state, the micro control unit controls a second detection circuit to work, and determines the position of a sliding switch in the function selection device based on the second detection signal.
In some embodiments, the function selection device is a function selection circuit board, and a plurality of function sections provided on the function selection device are spaced apart from each other.
In some embodiments, the first detection signal is a signal generated based on detection of a voltage characteristic, and the second detection signal is a signal generated based on detection of a capacitance characteristic.
In some embodiments, the first detection circuit is a voltage detection circuit, and the first detection circuit comprises: a plurality of detection resistors connected in series with each other, each of the plurality of detection resistors being connected to a corresponding function section on the function selection device; wherein the first detection circuit generates and outputs a first detection signal based on the voltages of the plurality of detection resistors.
In some embodiments, the second detection circuit is a capacitance detection circuit, and the second detection circuit comprises: a pre-charge module configured to charge each functional section on the function selection device; the data acquisition module is configured to detect the charge and discharge process of each functional section on the function selection device and generate corresponding detection charge and discharge time; and the second detection signal generation module is configured to compare the detected charging and discharging time with a preset charging and discharging time threshold value of each functional section and generate a second detection signal based on the comparison result.
In some embodiments, when the charging/discharging detection time of each functional segment is less than or equal to the preset charging/discharging time threshold, the second detection signal generation module generates and outputs a detection error signal.
In some embodiments, when the micro control unit receives a detection error signal, the micro control unit will generate an alarm signal based on the detection error signal.
According to another aspect of the present disclosure, there is provided a switch position detection method for the slide switch assembly as described above, the method including: outputting, by the first detection circuit, the first detection signal indicating a state of selection of at least one of a plurality of functional sections of the function selection device or selection of a non-functional section; receiving, by the micro control unit, the first detection signal, determining a position of the slide switch in the function selection device based on the first detection signal indicating selection of at least one of the plurality of function sections of the function selection device; when the first detection signal indicates a non-functional section selection state, controlling a second detection circuit to work through a micro control unit, and outputting a second detection signal through the second detection circuit, wherein the second detection signal indicates the position of a sliding switch in a function selection device, the second detection circuit is different from the first detection circuit, and the second detection signal is different from the first detection signal; receiving the second detection signal by the micro control unit, and determining the position of the sliding switch in the function selection device based on the second detection signal.
In some embodiments, outputting, by the second detection circuit, the second detection signal comprises: charging each function section on the function selection device; detecting the charging and discharging process of each functional section on the function selection device and generating corresponding detection charging and discharging time; and comparing the detected charging and discharging time with a preset charging and discharging time threshold value of each functional section, and generating a second detection signal based on a comparison result.
In some embodiments, when the charging/discharging detection time of each functional segment is less than or equal to the preset charging/discharging time threshold, a detection error signal is generated and output.
In some embodiments, a corresponding alarm signal is generated and output based on the detection error signal.
According to another aspect of the present disclosure, there is provided a motor vehicle comprising a sliding switch assembly as described above.
By utilizing the sliding switch assembly provided by the disclosure, the position of the sliding switch can be detected under the condition that the sliding switch is in contact with the function selection device; in particular, when the slide switch is in an open load state relative to the function selection device, the slide switch assembly can well detect the position of the slide switch, and has high accuracy and good robustness for detecting the position of the slide switch.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without making creative efforts. The following drawings are not intended to be drawn to scale in actual dimensions, with emphasis instead being placed upon illustrating the principles of the disclosure.
Fig. 1 shows a schematic block diagram of a sliding switch assembly 400 according to an embodiment of the present disclosure;
FIG. 2A shows a schematic diagram of a voltage detection circuit 520 according to an embodiment of the present disclosure;
FIG. 2B shows an equivalent schematic diagram of a voltage detection circuit when a slide switch selects functional segment 503 according to an embodiment of the present disclosure;
FIG. 3 shows a schematic block diagram of a capacitance detection circuit 600 according to an embodiment of the present disclosure;
FIG. 4A illustrates an exemplary flow diagram of a pre-charge electronic circuit according to an embodiment of the present disclosure;
fig. 4B shows a schematic diagram of a capacitance charging and discharging process according to an embodiment of the disclosure.
FIG. 5 illustrates an exemplary flow chart of a switch position detection method 100 according to an embodiment of the present disclosure;
fig. 6 illustrates an exemplary flow diagram of a process 200 of outputting a second detection signal by a second detection circuit according to an embodiment of the disclosure.
Detailed Description
Technical solutions in embodiments of the present disclosure will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments, but not all embodiments, of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.
Although various references are made herein to certain modules in a system according to embodiments of the present application, any number of different modules may be used. The modules are merely illustrative and different aspects of the systems and methods may use different modules.
Flow charts are used herein to illustrate operations performed by systems according to embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed in the exact order in which they are performed. Rather, the various steps may be processed in reverse order or simultaneously, as desired. Meanwhile, other operations may be added to the processes, or a certain step or several steps of operations may be removed from the processes.
According to an aspect of the present disclosure, a sliding switch assembly is provided.
Fig. 1 shows a schematic block diagram of a sliding switch assembly 400 according to an embodiment of the present disclosure.
Referring to fig. 1, the slide switch assembly 400 includes a slide switch 430 and a function selection device 420, the function selection device 420 has a plurality of function sections, and the slide switch 430 slides on the plurality of function sections to realize selection of the corresponding function sections.
The function selecting device 420 may be a multifunctional selecting panel of a motor vehicle, or a power distribution selecting box or other function selecting device in a power distribution system of a building. The present disclosure is not limited by the particular type of function selection device and its field of action.
The function selection means may have a plurality of function sections that are set based on actual requirements. For example, when the function selection device is a multifunction selection panel of a motor vehicle, the function selection device may have a function section such as a windshield wiper wiping start/stop function section, a car audio function section, a voice call function section, an hvac control function section, an emergency warning function section, and the like. Embodiments of the present disclosure are not limited by the specific functions provided and the specific number of functional segments.
The slide switch may be, for example, one slide switch, or may be a plurality of slide switches. The embodiments of the present disclosure are not limited by the number of the slide switches provided.
For example, the function selection device may be a function selection circuit board integrated with a plurality of function sections, and in this case, the function selection is realized by sliding a slide switch on the function selection circuit board. Or the function selecting means may be obtained by electrically connecting a plurality of individual function module sub-circuits, the slide switch may be a plurality of slide switches, for example, one sub-circuit slide switch is provided for each function module sub-circuit, and in this case, the selection of each function section in the function selecting means may be realized by, for example, a slide switch provided for each function module sub-circuit itself. The embodiments of the present disclosure are not limited by the specific composition of the function selection device and the specific selection manner adopted for the function selection.
The sliding switch assembly further includes a switch detection device 410, the switch detection device is connected to the function selection device, and the switch detection device 410 includes a first detection circuit 411, a micro control unit 412, and a second detection circuit 413.
The first detection circuit 411 is configured to output a first detection signal indicating a state of selection or non-functional section selection of at least one functional section of a plurality of functional sections of the function selection device.
The first detection circuit 411 is intended to detect the function section selection status of the current function selection means. It may be, for example, a voltage detection circuit, or it may also be a current detection circuit or other type of detection circuit. Embodiments of the present disclosure are not limited by the particular type of the first detection circuit.
The first detection signal is a signal which characterizes the current function section selection state of the function selection device. It may be, for example, an analog signal, for example a currently detected voltage signal or current signal, or it may also be a digital signal, for example a pulse signal or a square-wave signal. Embodiments of the present disclosure are not limited by the particular type of the first detection signal.
The micro control unit 412 is configured to receive the first detection signal and determine a position of the slide switch in the function selection device based on the first detection signal indicating a selection of at least one of the plurality of functional segments of the function selection device.
The micro control unit may receive the first detection signal, for example, by wire; or it may receive the first detection signal wirelessly. Embodiments of the present disclosure are not limited by the particular manner in which the micro control unit receives the first detection signal.
Wherein the selected state of at least one of the plurality of functional segments of the function selection device is indicative of the selected state of at least one of the functional segments of the function selection device, e.g. the functional segment currently selected by the user to activate the windscreen wiper.
When the first detection signal is a voltage signal, the micro control unit may obtain, for example, a slide switch position indicated by the first detection signal based on a lookup table of the voltage value and the slide switch position according to a voltage value of the voltage signal. Embodiments of the present disclosure are not limited by the particular manner in which the position of the slide switch is determined by the first detection signal.
The second detection circuit 413 is configured to output a second detection signal indicating a position of the slide switch in the function selection device, the second detection circuit being different from the first detection circuit and the second detection signal being different from the first detection signal.
The second detection circuit is intended to detect the position of the slide switch in the function selection means. It may be, for example, a capacitance detection circuit, or other detection circuits. The present disclosure is not limited by the type of the second detection circuit and its specific composition.
The second detection signal, which is intended to characterize the position of the slide switch in the function selection means, may be, for example, an analog signal, which may be, for example, a detected voltage signal or current signal, or it may also be a digital signal, which may be, for example, a pulse signal or a square-wave signal. Embodiments of the present disclosure are not limited by the particular type of the second detection signal.
It should be understood that the first detection circuit and the second detection circuit are used in the present disclosure only for distinguishing two detection circuits different in circuit structure and detection method, and are not intended to be limited thereto.
In some embodiments, the first detection circuit and the second detection circuit may be both independent detection circuits and electrically connected to the micro control unit, respectively, or both the first detection circuit and the second detection circuit may be integrated into the micro control unit. The embodiments of the present disclosure are not limited by the connection and configuration relationship of the first detection circuit, the second detection circuit and the micro control unit.
It should be understood that the first detection signal and the second detection signal are different, and are only intended to illustrate that the sources of signal generation are different and that the indications are different, and are not intended to be limiting. The first detection signal and the second detection signal may be, for example, the same type of signal, e.g., both voltage signals; or it may be different types of signals, for example, the first detection signal is a voltage signal, and the second detection signal is a pulse signal. Embodiments of the present disclosure are not limited by the relationship of the signal types of the first detection signal and the second detection signal.
When the first detection signal indicates a non-functional section selection state, the micro control unit controls a second detection circuit to work, and determines the position of a sliding switch in the function selection device based on the second detection signal.
The state of the non-functional section selection indicates that all functional sections in the function selection device are not selected, for example, when the user does not select the function selection device, or when the user selects through the slide switch, the slide switch is in a state of open load due to poor contact with the function selection device, and the slide switch is not identified.
The micro control unit determining the position of the switch in the function selection means based on the second detection signal may for example be: and when the second detection signal is a digital quantity signal, determining the corresponding position of the slide switch according to the digital quantity value of the obtained digital quantity signal and based on the comparison between the digital quantity value and a preset digital quantity value. Embodiments of the present disclosure are not limited by the particular manner in which the position of the slide switch is determined by the second detection signal.
Based on the sliding switch assembly arranged in the application, when the position of the sliding switch in the function selection device is detected, when the first detection circuit detects that the function selection device is currently in a non-function section selection state, the sliding switch position detection is carried out by arranging the second detection circuit different from the first detection circuit, and the position of the sliding switch is determined based on the obtained second detection signal, so that the problem that the position of the sliding switch cannot be determined through the function section selection state when the sliding switch is in poor contact with the function selection device can be effectively solved, and meanwhile, the robustness and the accuracy of the position detection of the sliding switch are improved.
In some embodiments, the function selection device is a function selection circuit board, and a plurality of function sections provided on the function selection device are spaced apart from each other.
The function selecting circuit board is, for example, a printed circuit board, and the slide switch and each of the plurality of function sections are made of a conductive material, which may be, for example, a copper foil material or a nickel-chromium alloy material.
By correspondingly arranging a plurality of functions in the corresponding function sections in the function selection device and arranging the function sections to be spaced from each other, when the slide switch is adopted to move on the function selection circuit board, the detection error of the position of the slide switch caused by the fact that the slide switch is positioned at the adjacent position of two adjacent function sections can be effectively avoided.
In some embodiments, the first detection signal is a signal generated based on detection of a voltage characteristic, and the second detection signal is a signal generated based on detection of a capacitance characteristic.
By adopting the first detection circuit to detect based on the voltage characteristic and generate the corresponding first detection signal, when a user operates the sliding switch to be in contact with each functional section, the current functional selection of the user can be fed back efficiently in real time; meanwhile, a second detection circuit is adopted to detect based on the capacitance characteristic and generate a second detection signal through setting, so that when the first detection signal indicates that the current state of the non-functional section selection is in, the position of the sliding switch is further accurately detected through detection of the capacitance characteristic. Therefore, the detection efficiency and the detection precision of the position detection of the sliding switch in the sliding switch assembly can be considered at the same time.
In some embodiments, the first detection circuit is a voltage detection circuit and the first detection circuit includes a plurality of detection resistors. The plurality of detection resistors are connected in series with each other, and each of the plurality of detection resistors is connected with a corresponding function section on the function selection device.
Wherein the first detection circuit generates and outputs a first detection signal based on the voltages of the plurality of detection resistors.
In some embodiments, the resistance values of the detection resistors are different from each other, and the resistance values thereof may be selected based on actual needs, for example. For example, when there are three detection resistors, the resistance values thereof may be set to 50 Ω, 75 Ω, 150 Ω, respectively, or may be set to other resistance values. Embodiments of the present disclosure are not limited by the resistance value of the detection resistor.
Fig. 2A shows a schematic diagram of a voltage detection circuit according to an embodiment of the present disclosure. Fig. 2B shows an equivalent schematic diagram of the voltage detection circuit when the slide switch selects section 503 according to an embodiment of the present disclosure.
Referring to fig. 2A, there is shown a slide switch 510 in a slide switch assembly, a function selection device 500, here a function selection circuit board, on which a plurality of functional segments (shown as functional segments 502, 503 in fig. 2A) are arranged, and on which a ground segment (shown as segment 501 in fig. 2A) is arranged, said ground segment 501 being connected to a ground GND, each segment 501, 502, 503 being shaped, for example, as a copper pad on the function selection circuit board. At this time, the slide switch has two contacts, one of which is always in contact with the ground section 501, and the other of which is in contact with the function sections 502, 503 to enable selection of a function based on the user's slide.
The voltage detection circuit 520 includes, for example, a detection resistor RT1、RT2、RT3And detecting the shunt resistance R0And it is connected to a reference voltage Vref, which may be, for example, 12V. Wherein the detection resistor RT2、RT3Are respectively connected to the functional segments 502,A functional section 503. The sense resistor R is shown in detail in FIG. 2AT2Connected to the functional section 502, detects the resistance RT3Connected to the functional section 503. Detecting shunt resistance R0The problem that the current of a voltage detection circuit is too large when all resistors are short-circuited is solved. The voltage detection circuit takes the voltage value of the position of the test point T as a first detection signal and transmits the first detection signal to the micro control unit in real time.
Wherein the detection resistor RT1、RT2、RT3For example 200 Ω, 300 Ω, 600 Ω, respectively, and the detection shunt resistor R0Is 100 omega. Specifically, in the case where the user does not select any functional section or the slide switch is in poor contact with the functional section, the voltage value of the detection point T in the voltage detection circuit at this time is 11V; when the user selects the functional region 503 by operating the slide switch, the detection resistor R connected to the functional region 503 at this timeT3The resistance value of the detection resistor in the circuit is changed due to short circuit, the equivalent circuit diagram of the voltage detection circuit is shown in fig. 2B, and the voltage value at the detection point T is 10V. Therefore, by measuring the voltage value of the detection point T, the selection of the functional section in the current circuit can be represented.
The first detection circuit is set to be a voltage detection circuit, a plurality of detection resistors which are connected in series are arranged in the voltage detection circuit, and each detection resistor in the plurality of detection resistors is connected with a corresponding function section on the function selection circuit board, so that the selection state of the function section in the current circuit can be reflected based on the voltage value of a preset detection point in the voltage detection circuit, and the position detection of the slide switch is realized conveniently and quickly.
In some embodiments, the second detection circuit is, for example, a capacitance detection circuit.
Fig. 3 shows a schematic block diagram of a capacitance detection circuit 600 according to an embodiment of the present disclosure.
Referring to fig. 3, the second detection circuit is a capacitance detection circuit 600, and the second detection circuit includes a precharge module 610, a data acquisition module 620 and a second detection signal generation module 630.
The pre-charge module 610 is configured to charge each functional section on the function selection device.
The charging process may, for example, provide for charging the individual function segments of the function selection device to a preset charging voltage. The charging voltage may be set, for example, based on circuit characteristics and specific requirements, and may be set to 3.3V, or may be set to 5V, for example. Embodiments of the present disclosure are not limited by the specific voltage value of the set preset charging voltage.
In some embodiments, the pre-charging module may be, for example, a charge and discharge electronic circuit. Fig. 4A illustrates a schematic diagram of a charge and discharge electronic circuit of a second detection circuit according to an embodiment of the present disclosure. Fig. 4B shows a schematic diagram of a capacitance charging and discharging process according to an embodiment of the disclosure.
The above-described charging and detecting process can be described in more detail with reference to fig. 4A and 4B. An exemplary charge and discharge electronic circuit is shown in fig. 4A. The charging and discharging electronic circuit comprises a capacitor C to be tested, a charging branch M1 and a discharging branch M2, wherein the charging branch M1 and the discharging branch M2 are connected with the capacitor C to be tested in parallel. The capacitance to be measured can be, for example, a segment equivalent capacitance of a functional segment in the function selection device. Wherein the charging branch M1 comprises a charging power supply and a charging shunt resistor R1. The charging voltage of the charging power supply is 5V for example, and the charging shunt resistor R1For example, it may be set on a demand basis, for example, set to 200 Ω (ohms). The discharge branch M2 comprises a discharge shunt resistor R2Said discharge shunt resistor R2It may be set based on actual requirements, for example it may be set to 100 Ω. The charging branch and the discharging branch can be selected through a charging and discharging selection switch K, and the charging process is switched to the discharging process after the charging process is finished, so that the charging and discharging performance can be detected.
Fig. 4B shows a schematic diagram of a charging and discharging process of a capacitor according to an embodiment of the disclosure.
For example, when the charge/discharge electronic circuit shown in fig. 4A is used to charge and discharge a functional segment, the charging/discharging process of the segment equivalent capacitance of the functional segment is shown in fig. 4B. The charging and discharging process comprises a capacitor charging process and a capacitor discharging process. The charging and discharging time is the total time of the charging process and the discharging process.
The data collection module 620 is configured to detect charging and discharging processes of each functional segment on the function selection device and generate corresponding detected charging and discharging time.
In some embodiments, the data acquisition module may be, for example, a pulse counting circuit, and for each functional segment, when the precharge module starts to charge the functional segment, the pulse counting circuit starts to operate, for example, start to generate pulse signals with a constant pulse time period, and count the number of generated pulse signals; after the functional segment goes through the charging and discharging process, for example, when the voltage of the capacitor of the functional segment is lower than the preset discharging voltage, it marks that the functional segment completes the discharging process, at this time, the pulse counter stops generating the pulse signal, ends the pulse counting process, and outputs the detected charging and discharging time signal by using the number of pulses corresponding to the charging and discharging process of the current functional segment as the detected charging and discharging time signal of the functional segment.
For example, if a pulse period (a pulse period represents a time from a time when one pulse starts to a time when a next pulse starts) in the pulse counting circuit is set to 10ms, a corresponding detected charge/discharge time signal is 15 if the charge/discharge time of one functional segment is 150 ms. The charge and discharge time signal may be in the form of a binary code or an octal code, for example.
It should be understood that the data acquisition module may have other forms of components, or may use other methods to detect the charging and discharging time. Embodiments of the present disclosure are not limited by the particular structural configuration of the data acquisition module and the particular selection method employed.
The second detection signal generation module 630 is configured to compare the detected charging and discharging time with a preset charging and discharging time threshold of each functional segment, and generate a second detection signal based on the comparison result.
The charge/discharge time threshold may be, for example, the same value for each function section on the function selection device, for example, the preset charge/discharge time threshold is 100ms for each function section, or different preset charge/discharge time thresholds may be set for each function section, for example, the corresponding preset charge/discharge time threshold is obtained by substituting a calculation formula according to an equivalent capacitance value of each function section, or the detection time of each function section during the charge/discharge process when the function selection is not performed is measured and taken as the preset charge/discharge time of each function section. The embodiments of the present disclosure are not limited by the specific values of the set preset charge-discharge time threshold and the setting manner thereof.
The preset charging and discharging time threshold may be represented by a preset charging and discharging time signal, where the preset charging and discharging time signal is, for example, a charging and discharging time signal corresponding to each functional segment of the function selecting device, which is charged by the pre-charging module and detected when the functional segment is not selected by the sliding switch (i.e., the sliding switch is not located above the functional segment). Which is for example a digital quantity in binary or octal coded form, or it may have other forms as well. Embodiments of the present disclosure are not limited by the representation form of the preset charge-discharge time threshold.
When the preset charging and discharging time threshold is represented by a preset charging and discharging time signal, the second detection signal generation module may be, for example, a signal comparison circuit. The method comprises the steps of comparing a detection charging and discharging time signal corresponding to each functional section with a preset charging and discharging time signal of the functional section to obtain a comparison result signal corresponding to each functional section, and processing the comparison result signal of each functional section to obtain a second detection signal.
The above-described process of generating the second detection signal based on the comparison result can be described more specifically, for example. Based on the capacitive touch sensing principle, when the sliding switch approaches a certain functional section, for example, when the sliding switch is located above a certain functional section, although the sliding switch and the functional section are not in a contact state, the equivalent sliding capacitance of the sliding switch may be coupled with the equivalent capacitance of the slider so as to generate a composite capacitance. And because the composite capacitance is larger than the equivalent capacitance of the conductive section on the circuit board, when the switch is positioned on a certain functional section, the composite capacitance of the functional section is obviously larger than the capacitance of the functional section. Based on this, the charging and discharging time of the composite capacitor is significantly longer than that of the equivalent capacitor in the functional section according to the charging and discharging characteristics of the capacitor.
Based on this, when it is detected that the detected charging and discharging time in a certain functional section of the function selecting device is greater than the preset charging and discharging time, a second detection signal can be generated, and the second detection signal indicates that the current slide switch is located on the functional section.
Referring to fig. 2A, the above process may be described in more detail. For example, for the functional segment 503, if the current slide switch is located above the functional segment, the charge/discharge detection signal of the current functional segment can be obtained through the pre-charge module and the data acquisition module, for example, the charge/discharge detection signal is 25. If the preset charge/discharge signal of the functional segment 503 is 15, and it is set that if the detected charge/discharge signal is greater than the preset charge/discharge signal, a high level signal is generated as the comparison result signal, and if the detected charge/discharge signal is less than or equal to the preset charge/discharge signal, a low level signal is generated as the comparison result signal, and for the functional segment 503, the corresponding comparison result signal is a high level signal. Further, if there is only one slide switch in the current function selection device and it is located on the function section 503, the comparison result signals on the function sections 501 and 502 are both low level signals. At this time, by integrating the comparison result signals in the functional sections 501, 502, 503, a second detection signal indicating that the slide switch is located in the functional section 503 can be further generated.
The second detection circuit is arranged as a capacitance detection circuit, and the detection of the position of the slide switch is realized based on the capacitance detection circuit, so that a second detection signal corresponding to the position of the slide switch is generated, so that when the slide switch is not in contact with each functional section in the function selection device, namely the slide switch is in an open load state relative to the function selection device, the position of the slide switch in the function selection device at the moment can still be detected based on the capacitance characteristic of each functional section, and the function selected by the user at the moment is obtained. The detection capability of the slide switch assembly on the position of the slide switch is improved.
In some embodiments, when the charging/discharging detection time of each functional segment is less than or equal to the preset charging/discharging time threshold, a detection error signal is generated and output by the second detection circuit.
As described above, when the detected charging/discharging time of each functional segment is less than or equal to the preset charging/discharging time threshold value, which indicates that the current sliding switch is not located in any functional segment of the function selection device, the output detection error signal indicates that a selection error condition exists in the current sliding switch assembly. The error condition is, for example, that the function selection device in the slide switch assembly is not powered up and cannot be selected, or that the slide switch is worn or lost significantly and cannot be selected at the current stage. Embodiments of the present disclosure are not limited by the specific indication of the detection of the error signal.
The function selection error signal may be, for example, an analog signal or may also be a digital signal, and embodiments of the present disclosure are not limited by the specific type of the error selection signal.
Specifically, when the second detection circuit is a capacitance detection circuit, and when the detected charge-discharge time of each functional segment is less than or equal to the preset charge-discharge time threshold, that is, the detected charge-discharge signal of each functional segment is less than or equal to the preset charge-discharge time signal, the comparison result signal of each functional segment is a low level signal, and at this time, the second detection circuit may generate a detection error signal, for example, indicating that the slide switch at the current stage is not located on any functional segment.
Based on the above, when the charging and discharging detection time of each functional section is less than or equal to the preset charging and discharging time threshold value, the second detection circuit generates and outputs a detection error signal, so that the abnormal working state of the current sliding switch assembly can be fed back to the micro control unit in time, and subsequent processing is conveniently performed on the abnormal working state.
In some embodiments, when the micro control unit receives a detection error signal, an alarm signal is generated by the micro control unit based on the detection error signal.
The alarm signal is intended to indicate that the sliding switch assembly is in an abnormal working state at present. The alarm signal may be an analog signal or also a digital signal, for example. The alarm signal can be output to a user terminal or a user interface via the micro control unit for feedback to a user; or it may also be transmitted to other subunits within the micro control unit, for example it may be transmitted to an error screening subunit of the micro control unit for subsequent error detection and processing. Embodiments of the present disclosure are not limited by the type of alarm signal and the module to which it is output.
Based on the above, when the charging and discharging detection time of each functional section is less than or equal to the preset charging and discharging time threshold, the micro control unit receives the detection error signal of the second detection circuit, and generates a corresponding alarm signal based on the error signal, so that the abnormal working state of the current sliding switch assembly can be timely fed back to a user or other control units, and subsequent processing can be performed on the abnormal working state.
According to another aspect of the present disclosure, a switch position detection method for the sliding switch assembly as described above is proposed.
Fig. 5 illustrates an exemplary flow diagram of a switch position detection method 100 according to an embodiment of the disclosure.
Referring to fig. 5, first, in step S101, the first detection signal indicating a state of selection of at least one functional section or selection of a non-functional section among a plurality of functional sections of the function selection device is output by the first detection circuit.
As already mentioned, the function selection device has a plurality of function sections, and one or more function sections in the function selection device are selected, for example, by means of a slide switch, i.e. the user selects a corresponding function section by adjusting the position of the slide switch on the function selection device.
The function selection device can be, for example, a multifunctional selection panel of a motor vehicle, or a power distribution selection box or other function selection devices in a building power distribution system. The present disclosure is not limited by the particular type of function selection device and its field of action.
The first detection circuit is intended to detect a functional section selection state of the current function selection means. The first detection signal is a signal which characterizes the current function section selection state of the function selection device. Embodiments of the present disclosure are not limited by the particular type of the first detection circuit and the particular type of the first detection signal.
In particular, the first detection signal may indicate, for example, a state of selection of at least one of the plurality of functional sections or selection of a non-functional section of the function selection device when selected by the user. The selected state of at least one of the plurality of functional segments of the function selection device characterizes the selected state of at least one of the functional segments of the function selection device; the state of the non-functional section selection indicates that all functional sections in the function selection means are not selected. Embodiments of the present disclosure are not limited by the particular selection state indicated by the first detection signal.
Thereafter, in step S102, the first detection signal is received by the micro control unit.
The micro control unit may receive the first detection signal, for example, by wired connection, for example, electrically connected to the first detection circuit; or it may receive the first detection signal wirelessly, for example, based on Zigbee or bluetooth communication protocol. Embodiments of the present disclosure are not limited by the particular manner in which the micro control unit receives the first detection signal.
After the micro control unit receives the first detection signal, in step S103, it is determined whether the first detection signal indicates a selected state of at least one functional section of the plurality of functional sections of the function selecting device or indicates a state of no functional section selection.
Based on the determination, if the first detection signal indicates a selected state of at least one of the plurality of functional sections of the function selection device, then in step S104, a position of the slide switch in the function selection device is determined based on the first detection signal indicating the selection of at least one of the plurality of functional sections of the function selection device.
The process of determining the switch position based on the first detection signal may be, for example: when the first detection signal is a voltage signal, obtaining a sliding switch position indicated by the first detection signal based on a comparison table of the voltage value and the switch position according to the voltage value of the obtained voltage signal; alternatively, the corresponding position of the slide switch can be determined by other methods based on the first detection signal. Embodiments of the present disclosure are not limited by the particular manner in which the position of the slide switch is determined by the first detection signal.
If the first detection signal indicates a non-function selection state, in step S105, the micro control unit controls the second detection circuit to operate, and the second detection circuit outputs a second detection signal indicating a position of the slide switch in the function selection device. Wherein the second detection circuit is different from the first detection circuit, and the second detection signal is different from the first detection signal.
The second detection circuit is intended to detect the position of the slide switch in the function selection means. It may be, for example, a capacitance detection circuit, or other detection circuits. The present disclosure is not limited by the type of the second detection circuit and its specific composition.
The second detection signal, which is intended to characterize the position of the switch in the function selection means, may be, for example, an analog signal, which may be, for example, a detected voltage signal or current signal, or it may also be a digital signal, which may be, for example, a pulse signal or a square-wave signal. Embodiments of the present disclosure are not limited by the particular type of the second detection signal.
It should be understood that the first and second detection circuits are used in this disclosure only for distinguishing the first and second detection circuits, and are not intended to be limiting. The first detection signal and the second detection signal are different, and are only intended to illustrate that the signal generation sources are different and the indications are different, but are not intended to limit the same. Embodiments of the present disclosure are not limited by the relationship of the signal types of the first detection signal and the second detection signal.
Thereafter, the second detection signal is received by the micro control unit via the processing of the second detection circuit, and the position of the slide switch in the function selection device is determined based on the second detection signal in step S106.
The micro control unit may receive the second detection signal, for example, by wired connection, for example, with the second detection circuit; or it may receive the second detection signal wirelessly, for example, based on Zigbee or bluetooth communication protocols. Embodiments of the present disclosure are not limited by the particular manner in which the micro control unit receives the second detection signal.
Based on the method, when the position of the sliding switch in the sliding switch assembly is detected, when the first detection circuit detects that the function selection device is currently in the non-function section selection state, the position of the sliding switch is detected by arranging the second detection circuit different from the first detection circuit, and the position of the sliding switch is determined based on the obtained second detection signal, so that the problem that the position of the sliding switch cannot be determined through the function section selection state when the sliding switch is in poor contact with the function selection device can be effectively solved, and meanwhile, the robustness and the accuracy of the position detection of the sliding switch are improved.
Fig. 6 illustrates an exemplary flow diagram of a process 200 for outputting a second detection signal by a second detection circuit according to an embodiment of the disclosure. Referring to fig. 6, first, in step S201, each function section on the function selection device is charged.
The charging process can be implemented, for example, by a charging sub-circuit integrated in the second detection circuit, or it can also be implemented by a charging sub-circuit electrically connected outside the second detection circuit. Embodiments of the present disclosure are not limited by the specific implementation of the charging process.
The charging process may, for example, provide for charging the individual function fields on the function selection device to a preset charging voltage. The charging voltage may be set based on circuit characteristics and specific requirements, for example, and embodiments of the present disclosure are not limited by the specific voltage value of the set preset charging voltage.
Subsequently, in step S202, each function segment charge-discharge process on the function selection device is detected, and a corresponding detected charge-discharge time is generated.
And detecting the charge-discharge process of each functional section, and representing the time domain characteristics when the charge-discharge of the corresponding section is detected. And the charging and discharging process can be detected and started simultaneously with the charging process, and the charging process and the discharging process of each functional section can be detected, and the whole charging and discharging time of the functional section can be obtained and used as the charging and discharging time.
In some embodiments, for example, the detected charge-discharge time may be converted into a detected charge-discharge signal for subsequent output or processing. The embodiment of the present disclosure is not limited by the specific characterization manner for detecting the charging and discharging time.
For example, the detection process may be implemented by a pulse counting method, for example, counting the time for charging and discharging the capacitor via a pulse counter, and representing the amount of time by a digital quantity of the number of pulse signals, so that corresponding to each functional segment, a corresponding amount of pulse signals is generated based on the charging and discharging time thereof. At the moment, the numerical value of the pulse signal quantity is in direct proportion to the charging and discharging time of each functional section; the detection process may also be implemented in other manners, and the embodiment of the present disclosure is not limited by the specific method used for detecting the charging and discharging time.
Based on the above, it should be understood that the operations of steps S201 and S202 may be performed in parallel or in sequence, and no limitation is made thereto.
In some embodiments, the charging process may be performed, for example, by a charge and discharge electronic circuit as shown in fig. 4A. The charge-discharge electronic circuit comprises a capacitor C to be tested, a charge branch and a discharge branch which are connected with the capacitor C to be tested in parallel. The charging branch and the discharging branch can be selected through a charging and discharging selection switch K, and the charging process is switched to the discharging process after the charging process is finished, so that the detection of the charging and discharging performance is facilitated.
After the detected charge and discharge time is obtained, in step S203, the detected charge and discharge time is compared with the preset charge and discharge time threshold of each functional segment, and a second detection signal is generated based on the comparison result.
Based on the above, in the present application, the second detection circuit is adopted to charge the functional circuit board first, and detect the charge-discharge process of each functional segment to obtain the detected charge-discharge time, and compare the detected charge-discharge time with the preset charge-discharge time of each functional segment to generate the second detection signal, so that under the condition that the sliding switch is not in contact with each functional segment, the detection of the position of the sliding switch can be well realized based on the detection of the equivalent capacitance charge-discharge characteristics of the sliding switch and each functional segment, and the detection process has higher robustness and detection precision.
In some embodiments, when the charging/discharging detection time of each functional segment is less than or equal to the preset charging/discharging time threshold, a detection error signal is generated and output by the second detection circuit.
And the detection charging and discharging time of each functional section is less than or equal to the preset charging and discharging time threshold value, and the characteristic that the current sliding switch does not exist on any functional section in the function selection device is shown, namely the current sliding switch assembly is in an abnormal working state. The abnormal operating state may be, for example, that the function selection device of the slide switch assembly is not powered on and the user cannot select the function selection device, or that the slide switch is seriously worn or lost and the current stage cannot select the function selection device. Embodiments of the present disclosure are not limited by the specific exceptions.
The function selection error signal indicates that the current slide switch assembly is in an abnormal operating state, which may be an analog signal or a digital signal, for example, and the embodiment of the present disclosure is not limited by the specific type of the error selection signal.
Based on the above, when the charging and discharging detection time of each functional section is less than or equal to the preset charging and discharging time threshold value, the second detection circuit generates and outputs a detection error signal, so that the abnormal working state of the current sliding switch assembly can be fed back to the micro control unit in time, and subsequent processing is conveniently performed on the abnormal working state.
In some embodiments, when the micro control unit receives a detection error signal, an alarm signal is generated by the micro control unit based on the detection error signal.
The alarm signal is intended to indicate that the sliding switch assembly is in an abnormal working state at present. The alarm signal may be an analog signal or also a digital signal, for example. The alarm signal can be output to a user terminal or an external function unit through the micro control unit for feedback to a user; or it may also be transmitted to other subunits within the micro control unit, for example it may be transmitted to an error screening subunit of the micro control unit for subsequent error detection and processing. Embodiments of the present disclosure are not limited by the type of alarm signal and its output.
Based on the above, when the charging and discharging detection time of each functional section is less than or equal to the preset charging and discharging time threshold value, the micro control unit receives the detection error signal and generates a corresponding alarm signal based on the error signal, so that the abnormal working state of the current sliding switch assembly can be timely fed back to a user or other control units, and subsequent processing can be conveniently carried out on the abnormal working state.
According to another aspect of the present disclosure, a motor vehicle is presented. The motor vehicle can execute the switch position detection method for the sliding switch assembly and realize the functions, can well realize the detection and response processes of the position of the sliding switch in the sliding switch assembly, and has higher detection accuracy and detection efficiency.
This application uses specific words to describe embodiments of the application. Reference to "a first/second embodiment," "an embodiment," and/or "some embodiments" means a feature, structure, or characteristic described in connection with at least one embodiment of the application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.
Moreover, those skilled in the art will appreciate that aspects of the present application may be illustrated and described in terms of several patentable species or situations, including any new and useful combination of processes, machines, manufacture, or materials, or any new and useful improvement thereon. Accordingly, various aspects of the present application may be embodied entirely in hardware, entirely in software (including firmware, resident software, micro-code, etc.) or in a combination of hardware and software. The above hardware or software may be referred to as "data block," module, "" engine, "" unit, "" component, "or" system. Furthermore, aspects of the present application may be represented as a computer product, including computer readable program code, embodied in one or more computer readable media.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The foregoing is illustrative of the present invention and is not to be construed as limiting thereof. Although a few exemplary embodiments of this invention have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of this invention as defined in the claims. It is to be understood that the foregoing is illustrative of the present invention and is not to be construed as limited to the specific embodiments disclosed, and that modifications to the disclosed embodiments, as well as other embodiments, are intended to be included within the scope of the appended claims. The invention is defined by the claims and their equivalents.
Claims (12)
1. A slide switch assembly comprising a slide switch and a function selection device, the function selection device having a plurality of function sections over which the slide switch slides to enable selection of a respective function section, the slide switch assembly further comprising a switch detection device comprising:
a first detection circuit that outputs a first detection signal indicating a state of selection of at least one of a plurality of functional sections of the function selection device or selection of a non-functional section;
a micro control unit receiving the first detection signal, determining a position of the slide switch in the function selection device based on the first detection signal indicating selection of at least one of the plurality of function sections of the function selection device;
a second detection circuit that outputs a second detection signal indicating a position of the slide switch in the function selection device, the second detection circuit being different from the first detection circuit and the second detection signal being different from the first detection signal;
when the first detection signal indicates a non-functional section selection state, the micro control unit controls a second detection circuit to work, and determines the position of a sliding switch in the function selection device based on the second detection signal.
2. The slide switch assembly of claim 1 wherein the function selection device is a function selection circuit board and a plurality of function sections provided on the function selection device are spaced apart from one another.
3. The slide switch assembly according to claim 1, wherein the first detection signal is a signal generated based on detection of a voltage characteristic, and the second detection signal is a signal generated based on detection of a capacitance characteristic.
4. The slide switch assembly of claim 3 wherein the first detection circuit is a voltage detection circuit and the first detection circuit comprises:
a plurality of detection resistors connected in series with each other, each of the plurality of detection resistors being connected to a corresponding function section on the function selection device;
wherein the first detection circuit generates and outputs a first detection signal based on the voltages of the plurality of detection resistors.
5. The slide switch assembly of claim 3 wherein the second detection circuit is a capacitive detection circuit and the second detection circuit comprises:
a pre-charge module configured to charge each functional section on the function selection device;
the data acquisition module is configured to detect the charge and discharge process of each functional section on the function selection device and generate corresponding detection charge and discharge time;
and the second detection signal generation module is configured to compare the detected charging and discharging time with a preset charging and discharging time threshold value of each functional section and generate a second detection signal based on the comparison result.
6. The sliding switch assembly according to claim 5, wherein the second detection signal generating module generates and outputs a detection error signal when the detected charging/discharging time of each functional segment is less than or equal to a preset charging/discharging time threshold.
7. The slide switch assembly of claim 6 wherein when the micro control unit receives a detection error signal, the micro control unit will generate an alarm signal based on the detection error signal.
8. A switch position detection method for the slide switch assembly of any one of claims 1 to 7, the method comprising:
outputting, by the first detection circuit, the first detection signal indicating a state of selection of at least one of a plurality of functional sections of the function selection device or selection of a non-functional section;
receiving, by the micro control unit, the first detection signal, determining a position of the slide switch in the function selection device based on the first detection signal indicating selection of at least one of the plurality of function sections of the function selection device;
when the first detection signal indicates a non-functional section selection state, controlling a second detection circuit to work through a micro control unit, and outputting a second detection signal through the second detection circuit, wherein the second detection signal indicates the position of a sliding switch in a function selection device, the second detection circuit is different from the first detection circuit, and the second detection signal is different from the first detection signal;
receiving the second detection signal by the micro control unit, and determining the position of the sliding switch in the function selection device based on the second detection signal.
9. The switch position detection method according to claim 8, wherein outputting the second detection signal by the second detection circuit includes:
charging each function section on the function selection device;
detecting the charging and discharging process of each functional section on the function selection device and generating corresponding detection charging and discharging time;
and comparing the detected charging and discharging time with a preset charging and discharging time threshold value of each functional section, and generating a second detection signal based on a comparison result.
10. The switch position detection method according to claim 9, further comprising:
and when the charging and discharging detection time of each functional section is less than or equal to the preset charging and discharging time threshold value, generating and outputting a detection error signal.
11. The switch position detection method according to claim 9, further comprising:
and generating and outputting a corresponding alarm signal according to the detection error signal.
12. A motor vehicle comprising a sliding switch assembly according to any one of claims 1-7.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113093062A (en) * | 2021-04-29 | 2021-07-09 | 北京送变电有限公司 | Terminal row open circuit monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113093062A (en) * | 2021-04-29 | 2021-07-09 | 北京送变电有限公司 | Terminal row open circuit monitoring system |
| CN113093062B (en) * | 2021-04-29 | 2023-06-27 | 北京送变电有限公司 | Terminal strip open circuit monitoring system |
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