CN116907692A - Pressure state detection method, device and system - Google Patents
Pressure state detection method, device and system Download PDFInfo
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- 238000012790 confirmation Methods 0.000 claims abstract description 67
- 238000012545 processing Methods 0.000 claims description 48
- 230000008054 signal transmission Effects 0.000 claims description 26
- 230000000087 stabilizing effect Effects 0.000 claims description 15
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
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Abstract
The embodiment of the invention discloses a pressure state detection method, a device and a pressure state detection system, wherein the pressure state detection method comprises the following steps: reading an interpolation signal at intervals of a preset time period, wherein the interpolation signal has various signal types; if a preset number of inserting signals with the same signal type are continuously read, determining that a state confirmation signal is received, wherein the signal type of the state confirmation signal is the same as the signal type of the preset number of inserting signals; determining whether to acquire a pressure state signal based on the state confirmation signal; if the pressure state signal is obtained, detecting the pressure state according to the pressure state signal. According to the invention, the read continuous multiple inserting signals are converted into the state confirmation signals for judgment, so that the detection reliability is greatly improved, whether the pressure state signals are acquired or not is determined according to the state confirmation signals, the operation power consumption is reduced, and the detection requirements under different logics can be adapted.
Description
Technical Field
The present invention relates to the field of pressure sensors, and in particular, to a pressure state detection method, device, and system.
Background
Sensors are widely used in the automotive field, where pressure sensors play an important role. In the field of automotive technology, it is generally required that key working elements are capable of independently recognizing the pressure state of a certain part to be detected by a pressure sensor and performing a corresponding action accordingly. Along with the high integration of automobile electronics, higher requirements are also put forward on the size and the compound function of the working element, which means that the judgment of the pressure by the key working element is often orderly carried out in a certain logic priority level in cooperation with other requirements, but the existing pressure state detection method for converting the pressure into an analog voltage value for output has single function, high power consumption and low detection accuracy and reliability, and is difficult to adapt to new requirements.
Disclosure of Invention
The invention provides a pressure state detection method, a pressure state detection device and a pressure state detection system, and aims to effectively solve the problems of single function, high power consumption and low detection accuracy and reliability of the pressure state detection method in the prior art.
According to a first aspect of the present invention, there is provided a pressure state detection method comprising: reading an interpolation signal at intervals of a preset time period, wherein the interpolation signal has a plurality of signal types; if a preset number of inserting signals with the same signal type are continuously read, determining that a state confirmation signal is received, wherein the signal type of the state confirmation signal is the same as the signal type of the preset number of inserting signals; determining whether to acquire a pressure state signal based on the state confirmation signal; and if the pressure state signal is acquired, detecting the pressure state according to the pressure state signal.
Further, the signal type of the add-on signal is determined based on the instantaneous connection level of the mechanical add-on, and the signal type of the add-on signal changes when the mechanical add-on position is dithered or shifted.
Further, the plurality of signal types include a high level and a low level, and if a preset number of the add-in signals having the same signal type are continuously read, determining that a status confirmation signal is received includes: if a preset number of high-level inserting signals are continuously read, determining that a state confirmation signal is received, wherein the signal type of the state confirmation signal is high level; and if the preset number of low-level inserting signals are continuously read, determining that a state confirmation signal is received, wherein the signal type of the state confirmation signal is low level.
Further, the signal type includes a target signal type; the step of determining whether to acquire a pressure state signal based on the state confirmation signal includes: judging the signal type of the state confirmation signal, and acquiring a pressure state signal when the state confirmation signal is the target signal type; when the status confirmation signal is not of the target signal type, no pressure status signal is acquired.
Further, the target signal type is a high level signal.
Further, the step of detecting a pressure state according to the pressure state signal includes: extracting a voltage value of the pressure state signal; and determining a pressure state according to the voltage value.
Further, the step of determining a pressure state according to the voltage value includes: comparing whether the voltage value is larger than a preset voltage threshold value, and judging the state as a high pressure state if the voltage value is larger than or equal to the preset voltage threshold value; and if the voltage value is smaller than a preset voltage threshold value, judging that the pressure is in a low pressure state.
According to a second aspect of the present invention, there is also provided a pressure state detection apparatus comprising: the signal reading unit is used for reading the interpolation signal at intervals of a preset time period, wherein the interpolation signal has a plurality of signal types; the signal judging unit is used for determining that a state confirmation signal is received if a preset number of the inserting signals with the same signal type are continuously read, wherein the signal type of the state confirmation signal is the same as the signal type of the preset number of inserting signals; a signal acquisition unit for determining whether to acquire a pressure state signal based on the state confirmation signal; and the signal detection unit is used for detecting the pressure state according to the pressure state signal if the pressure state signal is acquired.
According to a third aspect of the present invention, there is also provided a pressure state detection system, adapted for use in the pressure state detection method of any one of the first aspect, including a power module, a signal transmission module, a sensing acquisition module, and a signal processing module; the power supply module is connected with the signal transmission module, and the signal transmission module is connected with the signal processing module; the power supply module is connected with the sensing acquisition module, and the sensing acquisition module is connected with the signal processing module; the power supply module is connected with the signal processing module; the power supply module is used for supplying power to the signal transmission module, the sensing acquisition module and the signal processing module; the signal transmission module is used for converting the inserting signal into a state confirmation signal and sending the state confirmation signal to the signal processing module; the sensing acquisition module is used for acquiring a pressure state signal and sending the pressure state signal to the signal processing module; the signal processing module is used for detecting the pressure state according to the state confirmation and the pressure state signal.
Further, the sensing acquisition module comprises a pressure sensor, a voltage dividing circuit and a voltage stabilizing circuit; the pressure sensor, the voltage dividing circuit and the voltage stabilizing circuit are sequentially connected in series, the pressure sensor converts pressure into pressure sensing information and outputs the pressure sensing information to the voltage dividing circuit, and the voltage dividing circuit and the voltage stabilizing circuit convert the received pressure sensing information into pressure state signals and send the pressure state signals to the signal processing module. Further, the pressure sensing information is analog voltage, the input end of the voltage dividing circuit is connected with the output end of the pressure sensor to receive the pressure sensing information, the output end of the voltage dividing circuit is connected with the input end of the voltage stabilizing circuit, and the pressure state signal is output from the output end of the voltage stabilizing circuit, wherein the pressure state signal is analog voltage subjected to proportional modulation and voltage stabilization.
Further, the signal transmission module comprises a mechanical plug-in component, a male plug-in mechanical component of the mechanical plug-in component is connected with the power module, a female seat mechanical component is connected with the signal processing module, and when the male plug-in mechanical component of the mechanical plug-in component contacts with the female seat mechanical component to trigger the plug-in signal, the signal transmission module sends the state confirmation signal to the signal processing module.
Through one or more of the above embodiments of the present invention, at least the following technical effects can be achieved:
according to the technical scheme disclosed by the invention, the read continuous multiple plugging signals are converted into the state confirmation signals for judgment, so that the detection accuracy and reliability are greatly improved, whether the pressure state signals are acquired or not is determined according to the state confirmation signals after the state confirmation signals are acquired, and the front plugging state judgment link is added, so that the system operation power consumption is reduced, the functionality is increased, and the detection requirements under different logics can be adapted.
Drawings
The technical solution and other advantageous effects of the present invention will be made apparent by the following detailed description of the specific embodiments of the present invention with reference to the accompanying drawings.
FIG. 1 is a flow chart of the steps of a method for detecting a pressure state according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a pressure state detection system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a pressure state detection system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a signal transmission module according to an embodiment of the present invention;
FIG. 5 is a schematic circuit diagram of a pressure state detection system according to an embodiment of the present invention;
FIG. 6 is a flowchart illustrating a method for detecting a pressure state according to an embodiment of the present invention;
fig. 7 is a schematic diagram of determining a level of an add-on state according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a pressure state detecting device 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 accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and defined otherwise, the term "and/or" herein is merely an association relationship describing associated objects, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. The character "/" herein generally indicates that the associated object is an "or" relationship unless otherwise specified.
Pressure sensors in the current market are usually based on analog voltage output and can only be used in a use scenario where the output voltage changes with the change of the pressure value. With the popularization of interconnection technology, particularly in the use field of automobiles, it is often necessary to judge the plugging state of various external plugging devices, and when the plugging state is judged by the pressure sensor, the pressure sensor and the related design usually play multiple roles at the same time, so as to fully play roles and realize multiple functions in a limited space. If the pressure state is judged by adopting the existing pressure sensor with analog voltage output, the following problems exist: at present, the pressure sensor and the design thereof mainly adopt analog voltage output, have single functions, can not simultaneously and orderly process other signals, and can not meet the requirements of automobile function configuration; the application circuit designed by combining the sensor partially processes data in real time once the power is on, no priority judgment exists, and the power consumption is high; in an automotive electronic product, if a signal processing chip is used to process the plugging judgment, the sensitivity is high, and the plugging cannot be recognized by mistake, so that the automotive electronic product does not have an anti-shake function.
The invention provides a pressure state detection method aiming at the technical problems. Fig. 1 is a flowchart illustrating steps of a pressure state detection method according to an embodiment of the present invention, including steps S101 to S103. It will be appreciated that the order of steps 301 and 302 may be changed, and steps 301 and 302 may be performed first, steps 301 may be performed second, or steps 301 and 302 may be performed in parallel, and the specific execution order may be set according to the actual situation, which is not limited herein.
Step S101: the interpolation signal is read every preset time period, wherein the interpolation signal has a plurality of signal types.
In some embodiments, the add-on signal is a level signal that characterizes the add-on state of the external mechanical add-on, and may include a variety of signal types, such as a high level signal and a low level signal. The signal type of the add-on signal is determined based on the instantaneous connection level of the mechanical add-on, and changes when the mechanical add-on position is dithered or shifted. And setting and adjusting a preset time period according to the use scene of the device, and reading the plugging signal at intervals of the scanning port of the preset time period.
Step S102: if a preset number of inserting signals with the same signal type are continuously read, determining that a state confirmation signal is received, wherein the signal type of the state confirmation signal is the same as the signal type of the preset number of inserting signals.
Normally, when the external mechanical part is in the plugging state, the circuit is conducted, the high-level signal is read and recorded once when the port is scanned, and when the external mechanical part is in the unplugged state, the circuit is disconnected, and the low-level signal is read and recorded once when the port is scanned. However, when the mechanical plug-in unit is plugged normally, the level signal will be changed due to the vibration of the whole device, and due to the conductive property of the machine, the level signal scanned by the scanning port will be dithered when the external mechanical unit is plugged and dithered, so that the false plug-in judgment is easy to occur.
In some embodiments, a status confirmation signal is set, and when a preset number of add-in signals with the same signal type are continuously read, it is determined that the status confirmation signal is received, where the signal type of the status confirmation signal is the same as the signal type of the preset number of add-in signals.
Specifically, if a preset number of high-level inserting signals are continuously read, determining that a state confirmation signal is received, wherein the signal type of the state confirmation signal is high level; if the preset number of low-level inserting signals are continuously read, the state confirmation signal is received, and the signal type of the state confirmation signal is low.
When the plugging state judgment is carried out, the state confirmation signal is used as a reference quantity, external continuous or intermittent plugging analog signals can be quantized into high-low level electric signals, transient level signals with short duration are ignored, jitter can be effectively eliminated, and the accuracy and reliability of the plugging state judgment are improved.
It will be appreciated that the order of the step S101 and the step S102 may be changed, and the step S101 may be performed first and then the step S102 may be performed, or the step S102 may be performed first and then the step S101 may be performed, or the step S101 and the step S102 may be performed in parallel, and the specific execution order may be set according to the actual situation, which is not limited herein.
Step S103: it is determined whether to acquire the pressure state signal based on the state confirmation signal.
In some embodiments, the signal type of the status confirmation signal is determined, and when the status confirmation signal is the target signal type, the pressure status signal is obtained. When the status confirmation signal is not of the target signal type, the pressure status signal is not acquired. The target signal type is a signal type pre-designated according to the detection requirement, for example, the target signal type is a high-level signal, the high-level signal indicates that the mechanical plug-in unit is in a plug-in state currently, and a pressure state signal is acquired again in the plug-in state. The pressure state signal is monitored and output through the pressure sensor, the pressure state signal is always continuously received in the prior art, the system power consumption is increased, and the service life is reduced.
Step S104: if the pressure state signal is obtained, detecting the pressure state according to the pressure state signal.
In some embodiments, the pressure state signal is an analog voltage value output by the sensing acquisition module, the voltage value of the pressure state signal is extracted, and the pressure state is determined according to the voltage value. And determining a preset voltage threshold according to the voltage value range of the device plugging state, comparing whether the extracted voltage value is larger than the preset voltage threshold, and judging the device to be in a high-pressure state if the extracted voltage value is larger than or equal to the preset voltage threshold. And if the voltage value is smaller than the preset voltage threshold value, judging that the pressure is in a low pressure state. If the pressure sensor detects that the object is a plugging device, the high pressure state can represent that the plugging device detected by the pressure sensor is plugged and plugged in place, and the low pressure state can represent that the plugging device detected by the pressure sensor is plugged but not plugged in place. The level change of the signal to be inserted and the voltage change of the pressure sensor caused by the mechanical action mentioned in the present embodiment may be regarded as two state quantity changes caused by two independent external mechanical actions, which are different, respectively, or may be regarded as two state quantity changes caused by the same external mechanical action.
The embodiment of the invention also provides a pressure state detection system, as shown in fig. 2, which comprises a power module 10, a signal transmission module 20, a sensing acquisition module 30 and a signal processing module 40.
The power module 10 is connected with the signal transmission module 20, and the signal transmission module 20 is connected with the signal processing module 40. The power module 10 is connected with the sensing acquisition module 30, and the sensing acquisition module 30 is connected with the signal processing module 40. The power module 10 is connected to the signal processing module 40.
In some embodiments, the power module is used to power the signal communication module 20, the sensing acquisition module 30, and the signal processing module 40. The power module 10 may include an independent power source and a linear regulator, which may be plural. The power module 10 may include an independent power source, a first linear voltage stabilizer, a second linear voltage stabilizer and a third linear voltage stabilizer, where the first linear voltage stabilizer supplies power to the sensing acquisition module 30, the second linear voltage stabilizer supplies power to the signal processing module 40, and the third linear voltage stabilizer supplies power to the signal transmission module 20, as shown in fig. 3. When the signal transmission module 20, the sensing acquisition module 30 and the signal processing module 40 have the requirement of using the same voltage value for power supply, the number of linear voltage regulators can be reduced, and the same linear voltage regulator is used for power supply.
In some embodiments, the sensing acquisition module 30 is configured to acquire a pressure state signal and send the pressure state signal to the signal processing module 40. As shown in fig. 3, the sensing acquisition module 30 includes a pressure sensor, a voltage dividing circuit, and a voltage stabilizing circuit. The pressure sensor, the voltage dividing circuit and the voltage stabilizing circuit are sequentially connected in series, the pressure sensor converts pressure into pressure sensing information and outputs the pressure sensing information to the voltage dividing circuit, and the voltage dividing circuit and the voltage stabilizing circuit convert the received pressure sensing information into pressure state signals and send the pressure state signals to the signal processing module 40.
In some embodiments, the signal transmission module 20 is configured to convert the external plugging state information into a plugging signal, and send the plugging signal to the signal processing module 40. As shown in fig. 4, the signal transmission module 20 includes a mechanical insert, a male mechanical element of the mechanical insert is connected to the power module, a female mechanical element of the mechanical insert is connected to the signal processing module, and when the male mechanical element of the mechanical insert contacts the female mechanical element to trigger the insert signal, the signal transmission module 20 sends a status confirmation signal to the signal processing module 40. The signal transmission module 20 may connect the voltage output terminal of the power module 10 to an external mechanical part, and may conduct the output voltage of the power module 10 to the signal processing module 40 when the external mechanical part is plugged in. The output voltage of the power module 10 must not be higher than the rated operating voltage of the signal processing module 40, and the external mechanical parts are all metal devices with conductive capability, so that when the male mechanical part contacts with the female mechanical part, the voltage can be conducted to the signal processing module 40.
The constituent structure of the pressure state detection system and the detection flow of the pressure state detection method are described in detail below with specific examples.
Example 1
The pressure state detection system shown in fig. 5 includes a power module 10, a signal transmission module 20, a sensing acquisition module 30, and a signal processing module 40.
The sensing acquisition module 30 comprises a pressure sensor S1, a voltage dividing circuit and a voltage stabilizing circuit. The pressure sensor, the voltage dividing circuit and the voltage stabilizing circuit are sequentially connected in series, and pressure sensing information received by the pressure sensor is converted into a pressure state signal and sent to the signal processing module.
The voltage dividing circuit comprises a first resistor R1 and a second resistor R2, wherein a first end of the first resistor R1 is connected with the output end of the pressure sensor, a second end of the first resistor R1 is connected with a first end of the second resistor R2, and a second end of the second resistor R2 is grounded. The output voltage of the pressure sensor may range from 0.5V to 4.5V.
The voltage stabilizing circuit comprises a first operational amplifier AR1 and a first capacitor C1, wherein the non-inverting input end of the first operational amplifier AR1 is connected with the first end of the second resistor R2, the inverting input end of the first operational amplifier AR1 is connected with the output end of the first operational amplifier AR1, and the first power end of the first operational amplifier AR1 is connected with a 5V voltage source. The second power supply end of the first operational amplifier AR1 is grounded, the first end of the first capacitor C1 is connected with the first power supply end of the first operational amplifier AR1, the second end of the first capacitor C1 is connected with the second power supply end of the first operational amplifier AR1, and the output end of the first operational amplifier AR1 is connected with the signal processing module 40.
The power module 10 includes a linear regulator LDO1, a second capacitor C2 and a third capacitor C3, where a first end of the linear regulator LDO1 is connected to a DC 6V voltage source, a second end of the linear regulator LDO1 is grounded, a first end of the second capacitor C2 is connected to a first end of the linear regulator LDO1, a second end of the second capacitor C2 is grounded, a first end of the third capacitor C3 is connected to a third end of the linear regulator LDO1, and a second end of the third capacitor C3 is grounded.
The signal processing module 40 includes a first chip U1, a third interface 3 of the first chip U1 is connected to the power module 10, a sixth interface 6 of the first chip U1 is connected to the sensing and collecting module 30, and a signal transmission module 20 is serially connected between the third interface 3 and the twenty-eighth interface 28 of the first chip U1. The third interface 3 of the first chip U1 is connected to the output of the power module, which can output a voltage of 3.3V.
The signal transmission module 20 is a mechanical conductive structure that is communicated according to the plugging state of the external mechanical component Z1, the external mechanical component includes a male mechanical component and a female mechanical component, when the external mechanical component is not plugged, the circuit is not conducted, the twenty-eighth interface 28 of the first chip receives a low level signal, when the external mechanical component is plugged, the circuit is conducted, and the signal processing module 40 receives a high level signal.
The detection flow of the pressure state detection system is shown in fig. 6, when the level of the signal transmission module 20 changes due to the external mechanical action, the signal processing module 40 judges the level signal, the judging process is shown in fig. 7, the preset number is set to 3, when the inserting signals of the low level signal type or the high level signal type are continuously read for three times, the state confirmation signal is determined to be received, and the inserting frequency is judged to be increased by 1. When the state confirmation signal is a low level signal, the mechanical part is judged to be separated, the signal processing module 40 does not act, and the data at the output end of the sensing acquisition module 30 is not read. When the state confirmation signal is a high level signal, it is indicated that the external mechanical action causes the voltage value of the pressure sensor to change, and the signal processing module 40 reads the data at the output end of the sensing acquisition module 30 and performs the following steps
And judging the pressure state signal, judging that the mechanical component is plugged when the voltage value is lower than the voltage threshold value, but the mechanical component is not plugged in place, and judging that the mechanical component is plugged in place when the voltage value is higher than the voltage threshold value.
Referring to fig. 8, an embodiment of the present invention further provides a pressure state detecting apparatus 80, including: a signal reading unit 810, a signal judging unit 820, a signal acquiring unit 830, and a signal detecting unit 840.
The signal reading unit 810 is configured to read the add-on signal every a preset time period, where the add-on signal has multiple signal types.
And the signal judging unit 820 is configured to determine that a status confirmation signal is received if a preset number of the add-in signals with the same signal type are continuously read, where the signal type of the status confirmation signal is the same as the signal type of the preset number of the add-in signals.
A signal acquisition unit 830 for determining whether to acquire a pressure state signal based on the state confirmation signal.
The signal detection unit 840 is configured to detect a pressure state according to the pressure state signal if the pressure state signal is acquired.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present invention. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other manners. For example, the apparatus/terminal device embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical function division, and there may be additional divisions in actual implementation, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a Read-only memory (ROM), a random access memory (RAM, randomAccessMemory), an electrical carrier signal, a telecommunication signal, a software distribution medium, and so forth. It should be noted that the computer readable medium contains content that can be appropriately scaled according to the requirements of jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is subject to legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunication signals.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (12)
1. A pressure state detection method, comprising:
reading an interpolation signal at intervals of a preset time period, wherein the interpolation signal has a plurality of signal types;
if a preset number of inserting signals with the same signal type are continuously read, determining that a state confirmation signal is received, wherein the signal type of the state confirmation signal is the same as the signal type of the preset number of inserting signals;
determining whether to acquire a pressure state signal based on the state confirmation signal;
and if the pressure state signal is acquired, detecting the pressure state according to the pressure state signal.
2. The method of claim 1, wherein the signal type of the add-on signal is determined based on an instantaneous connection level of the mechanical add-on, and the signal type of the add-on signal changes when the mechanical add-on position is dithered or shifted.
3. The method of claim 1, wherein the plurality of signal types includes a high level and a low level, and the determining that the state confirmation signal is received if a predetermined number of the interpolation signals having the same signal type are successively read includes:
if a preset number of high-level inserting signals are continuously read, determining that a state confirmation signal is received, wherein the signal type of the state confirmation signal is high level;
and if the preset number of low-level inserting signals are continuously read, determining that a state confirmation signal is received, wherein the signal type of the state confirmation signal is low level.
4. The pressure state detection method of claim 1, wherein the signal type comprises a target signal type; the step of determining whether to acquire a pressure state signal based on the state confirmation signal includes:
determining the signal type of the status confirmation signal,
when the state confirmation signal is of the target signal type, acquiring a pressure state signal;
when the status confirmation signal is not of the target signal type, no pressure status signal is acquired.
5. The pressure state detection method of claim 4, wherein the target signal type is high.
6. The pressure state detection method according to claim 1, wherein the step of detecting a pressure state from the pressure state signal comprises:
extracting a voltage value of the pressure state signal;
and determining a pressure state according to the voltage value.
7. The pressure state detection method according to claim 6, wherein the step of determining a pressure state from the voltage value includes:
comparing whether the voltage value is larger than a preset voltage threshold value, and judging the state as a high pressure state if the voltage value is larger than or equal to the preset voltage threshold value; and if the voltage value is smaller than a preset voltage threshold value, judging that the pressure is in a low pressure state.
8. A pressure state detection device, characterized by comprising:
the signal reading unit is used for reading the interpolation signal at intervals of a preset time period, wherein the interpolation signal has a plurality of signal types;
the signal judging unit is used for determining that a state confirmation signal is received if a preset number of the inserting signals with the same signal type are continuously read, wherein the signal type of the state confirmation signal is the same as the signal type of the preset number of inserting signals;
a signal acquisition unit for determining whether to acquire a pressure state signal based on the state confirmation signal;
and the signal detection unit is used for detecting the pressure state according to the pressure state signal if the pressure state signal is acquired.
9. A pressure state detection system, suitable for the pressure state detection method of any one of claims 1 to 7, comprising a power module, a signal transmission module, a sensing acquisition module and a signal processing module;
the power supply module is connected with the signal transmission module, and the signal transmission module is connected with the signal processing module; the power supply module is connected with the sensing acquisition module, and the sensing acquisition module is connected with the signal processing module; the power supply module is connected with the signal processing module;
the power supply module is used for supplying power to the signal transmission module, the sensing acquisition module and the signal processing module;
the signal transmission module is used for converting the inserting signal into a state confirmation signal and sending the state confirmation signal to the signal processing module;
the sensing acquisition module is used for acquiring a pressure state signal and sending the pressure state signal to the signal processing module;
the signal processing module is used for detecting the pressure state according to the state confirmation and the pressure state signal.
10. The pressure state detection system of claim 9, wherein the sensing acquisition module comprises a pressure sensor, a voltage divider circuit, and a voltage regulator circuit;
the pressure sensor, the voltage dividing circuit and the voltage stabilizing circuit are sequentially connected in series, the pressure sensor converts pressure into pressure sensing information and outputs the pressure sensing information to the voltage dividing circuit, and the voltage dividing circuit and the voltage stabilizing circuit convert the received pressure sensing information into pressure state signals and send the pressure state signals to the signal processing module.
11. The pressure state detection system of claim 10, wherein the pressure sensing information is an analog voltage, an input terminal of the voltage dividing circuit is connected to an output terminal of the pressure sensor to receive the pressure sensing information, an output terminal of the voltage dividing circuit is connected to an input terminal of the voltage stabilizing circuit, and the pressure state signal is output from the output terminal of the voltage stabilizing circuit, wherein the pressure state signal is an analog voltage that is proportionally modulated and stabilized.
12. The pressure state detection system of claim 9, wherein the signal communication module comprises a mechanical insert, a male mechanical element of the mechanical insert being coupled to the power module, a female mechanical element of the mechanical insert being coupled to the signal processing module, the signal communication module transmitting the state confirmation signal to the signal processing module when the male mechanical element of the mechanical insert contacts the female mechanical element to trigger the insert signal.
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