CN214607086U - Pointer instrument - Google Patents
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- CN214607086U CN214607086U CN202121045914.1U CN202121045914U CN214607086U CN 214607086 U CN214607086 U CN 214607086U CN 202121045914 U CN202121045914 U CN 202121045914U CN 214607086 U CN214607086 U CN 214607086U
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Abstract
The application provides a pointer instrument, relates to pointer instrument technical field. The pointer instrument includes: the device comprises a controller, a stepping motor and a pointer disc; the input end of the controller is in communication connection with the sensor to acquire target environment parameters acquired by the sensor; a plurality of output ends of the controller are electrically connected with a plurality of control ends of the stepping motor; the drive end of the stepping motor is in transmission connection with the instrument pointer on the pointer disc, so that the fact that a plurality of output ends of the controller output multi-path pulse control signals to drive the stepping motor to work is achieved, the stepping motor can drive the instrument pointer to rotate on the pointer disc to a target scale value corresponding to the environmental parameter, the fact that a special drive chip is adopted is avoided, and the manufacturing cost of the pointer instrument can be reduced.
Description
Technical Field
The application relates to the technical field of vehicle-mounted instruments, in particular to a pointer instrument.
Background
The vehicle-mounted instrument is a main window for information communication between a vehicle and a driver, is also an important part in an electronic control system of a vehicle body, and can be divided into a mechanical pointer instrument and a virtual instrument based on a liquid crystal display screen according to the working principle of the vehicle-mounted instrument.
Compared with a virtual instrument of a liquid crystal display screen, the mechanical pointer instrument has the characteristics of low manufacturing cost and wide applicable scene, so that the mechanical pointer instrument is applied to various types of vehicles. For example, in an outdoor scene, the liquid crystal display screen is irradiated by the sun, the situation that the interface display is unclear easily exists, and potential safety hazards exist, and the problem can be solved by applying a mechanical pointer instrument.
However, the conventional pointer instrument generally adopts a special driving chip to drive the motor to rotate, so that the manufacturing cost of the conventional pointer instrument is high.
SUMMERY OF THE UTILITY MODEL
An object of the present application is to provide a pointer instrument, which can reduce the manufacturing cost of the pointer instrument, in view of the above-mentioned shortcomings in the prior art.
In order to achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:
in a first aspect, the present invention provides a pointer instrument, including: the device comprises a controller, a stepping motor and a pointer disc;
the input end of the controller is in communication connection with a sensor so as to acquire target environment parameters acquired by the sensor; a plurality of output ends of the controller are electrically connected with a plurality of control ends of the stepping motor, so that the controller outputs a plurality of paths of pulse control signals to the stepping motor according to the target environment parameters and the current environment parameter values indicated by the instrument pointer on the pointer plate;
the driving end of the stepping motor is in transmission connection with an instrument pointer on the pointer disc, so that the instrument pointer is driven by the stepping motor to rotate on the pointer disc to a target scale value corresponding to the target environmental parameter.
In an alternative embodiment, the pointer instrument further comprises: a level conversion chip; the multiple input ends of the level conversion chip are electrically connected with the multiple output ends of the controller, and the multiple output ends of the level conversion chip are respectively electrically connected with the multiple control ends of the stepping motor so as to output the multi-path pulse control signals to the stepping motor after level conversion.
In an optional embodiment, a plurality of pulse output terminals of the controller are electrically connected to a plurality of control terminals of the stepping motor, respectively, so as to output a plurality of paths of pulse control signals to the stepping motor, where each path of control signal is a path of pulse control signal.
In an optional embodiment, the plurality of pulse output terminals and the plurality of input/output ports of the controller are respectively and electrically connected to the plurality of control terminals of the stepping motor, so as to output a plurality of paths of pulse control signals to the stepping motor, where each path of control signal is a path of pulse control signal;
wherein, the pulse control signal of every input/output port output is: the controller inquires a preset target table to obtain a pulse control signal formed by a high level signal output based on a target interval based on the target environment parameter and the current scale value of the instrument pointer on the pointer disc; the pulse control signal output by each pulse output end is: and the controller inquires a preset target table to obtain a pulse control signal formed based on the target pulse duty ratio parameter based on the target environment parameter and the current scale value of the instrument pointer on the pointer disc.
In an alternative embodiment, the pointer instrument further comprises: and a first output end of the power supply module is electrically connected with a power end of the controller, and a second output end of the power supply module is electrically connected with a power end of the level conversion chip.
In an alternative embodiment, the power module comprises: two power conversion chips, two the input of power conversion chip is the electricity connection input power respectively, in order with input power's supply voltage converts first supply voltage to and second supply voltage, and respectively through two power conversion chip's output is exported, two power conversion chip's output does first output with the second output.
In an alternative embodiment, the pointer instrument further comprises: a communication module;
the communication module is in communication connection with an upper computer, and the upper computer is in communication connection with the sensor, so that the target environment parameters acquired by the sensor are transmitted to the communication module through the upper computer;
the communication module is also in communication connection with the controller to transmit the target environmental parameter to the controller.
In an alternative embodiment, the communication module is communicatively connected to the controller via a CAN bus.
In an alternative embodiment, the pointer instrument further comprises: and the liquid crystal display screen is in communication connection with the controller so as to display the target environment parameters.
In an alternative embodiment, the stepper motor is a micro stepper motor.
The beneficial effect of this application is:
in the pointer instrument that this application embodiment provided, wherein, the pointer instrument includes: the device comprises a controller, a stepping motor and a pointer disc; the input end of the controller is in communication connection with the sensor to acquire target environment parameters acquired by the sensor; a plurality of output ends of the controller are electrically connected with a plurality of control ends of the stepping motor, so that the controller outputs a plurality of paths of pulse control signals to the stepping motor according to the target environment parameters and the current environment parameter values indicated by the instrument pointer on the pointer plate; the drive end of the stepping motor is in transmission connection with the instrument pointer on the pointer disc, so that the instrument pointer is driven by the stepping motor to rotate on the pointer disc to a target scale value corresponding to the environmental parameter, multi-path pulse control signals can be output through a plurality of output ends of the controller to drive the stepping motor to work, the stepping motor can drive the instrument pointer to rotate on the pointer disc to the target scale value corresponding to the environmental parameter, the realization of a special drive chip is avoided, and the manufacturing cost of the pointer instrument can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a pointer instrument according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of another pointer instrument provided in the embodiment of the present application;
FIG. 3 is a schematic structural diagram of another pointer instrument provided in the embodiment of the present application;
FIG. 4 is a schematic structural diagram of another pointer instrument provided in the embodiments of the present application;
fig. 5 is a schematic flowchart of a pointer instrument control method according to an embodiment of the present application;
FIG. 6 is a schematic flow chart of another pointer instrument control method according to an embodiment of the present disclosure;
FIG. 7 is a schematic flowchart of another pointer instrument control method according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of an instrument controller according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Fig. 1 is a schematic structural diagram of a pointer instrument provided in an embodiment of the present application, where the pointer instrument may be applied to any vehicle such as a car, a motor train, a train, and a high-speed rail, and is not limited herein, as shown in fig. 1, the pointer instrument 100 may include: a controller 110, a stepping motor 120, and a pointer dial 130;
wherein, the input end of the controller 110 is connected to the sensor 140 in a communication manner to obtain the target environmental parameter collected by the sensor 140, the sensor 140 may be the sensor 140 used for collecting environmental parameters such as pressure, vibration, vehicle speed, oil amount, etc. in the vehicle, for example, the sensor 140 may include: a pressure sensor, an acceleration sensor, a vibration sensor, but not limited thereto; a plurality of output ends of the controller 110 are electrically connected with a plurality of control ends of the stepping motor 120, so that the controller 110 outputs a plurality of paths of pulse control signals to the stepping motor 120 according to the target environment parameters and the current environment parameter values indicated by the meter pointers on the pointer plate 130, and the plurality of paths of pulse control signals can be used for driving the stepping motor 120 to rotate; the driving end of the stepping motor 120 is in transmission connection with the meter pointer on the pointer disk 130, so that the meter pointer is driven by the stepping motor 120 to rotate on the pointer disk 130 to a target scale value corresponding to the environmental parameter, that is, the controller 110 drives the stepping motor 120 to rotate through a plurality of pulse control signals, then the stepping motor 120 drives the meter pointer to rotate on the pointer disk 130 to a target scale value corresponding to the environmental parameter, for example, the sensor 140 is a pressure sensor 140, and the meter pointer rotates on the pointer disk 130 to a target scale value corresponding to the target environmental parameter collected by the pressure sensor 140, that is, the meter pointer can rotate on the pointer disk 130 to a corresponding pressure value.
To sum up, by applying the embodiment of the application, the purpose that the multi-path pulse control signals can be output through a plurality of output ends of the controller to drive the stepping motor to work is achieved, and then the stepping motor can drive the instrument pointer to rotate on the pointer disc to the target scale value corresponding to the environmental parameter, so that the special driving chip is avoided, and the manufacturing cost of the pointer instrument can be reduced.
Fig. 2 is a schematic structural diagram of another pointer instrument provided in the embodiment of the present application. Alternatively, as shown in fig. 2, the pointer instrument 100 further includes: the level shift chip 150 may include electronic components such as a transistor, a diode, a resistor, and a capacitor, but not limited thereto; a plurality of input terminals of the level shift chip 150 are electrically connected to a plurality of output terminals of the controller 110, and a plurality of output terminals of the level shift chip 150 are electrically connected to a plurality of control terminals of the stepping motor 120, respectively, so as to perform level shift on the plurality of pulse control signals and output the signals to the stepping motor 120.
In some embodiments, for the controller 110, if the multi-pulse control signal output by the controller 110 is a pulse wave with a high level of 3.3V, and for the stepper motor 120, the requirement for the level is 5-10V, that is, higher than the high level corresponding to the multi-pulse control signal output by the controller 110, therefore, in order to enable the stepper motor 120 to normally operate, it is necessary to introduce the level conversion chip 150, perform level conversion on the multi-pulse control signal output by the controller 110 through the level conversion chip 150, and output the converted multi-pulse control signal to the stepper motor 120, so as to ensure that the stepper motor 120 can normally operate.
Optionally, a plurality of pulse output terminals of the controller 110 are electrically connected to a plurality of control terminals of the stepping motor 120, respectively, so as to output a plurality of pulse control signals to the stepping motor 120, where each pulse control signal is a single pulse control signal.
In some embodiments, the controller 110 may be an embedded single chip microcomputer, and the embedded single chip microcomputer may include a plurality of Pulse output terminals, which may be Pulse Width Modulation (PWM) terminals, wherein the plurality of Pulse output terminals may be respectively electrically connected to a plurality of control terminals of the stepping motor 120, so as to output a plurality of Pulse control signals to the stepping motor 120. Alternatively, the stepping motor 120 may include 4 control terminals, but is not limited thereto.
Optionally, the controller 110 may further include a plurality of pulse Output terminals and a plurality of Input/Output (I/O) ports, for example, as shown in fig. 2, 2 pulse Output terminals (PWM1 and PWM2) and 2 Input/Output ports (IO1 and IO2) may be included, but not limited thereto. The pulse output ends and the input/output ports are respectively electrically connected to the control ends of the stepping motor 120 to output multiple paths of pulse control signals to the stepping motor 120, and each path of control signal is a path of pulse control signal.
Wherein, the pulse control signal of every input/output port output is: the controller 110 queries a preset target table to obtain a pulse control signal formed by a high-level signal output based on a target interval based on the environmental parameter and the current scale value of the meter pointer on the pointer plate 130; the pulse control signal output by each pulse output end is: the controller 110 queries a preset target table to obtain a pulse control signal formed based on the target pulse duty ratio parameter based on the environmental parameter and the current scale value of the meter pointer on the pointer dial 130.
Alternatively, the controller 110 may store a preset target table in advance, and the preset target table may include: under any environmental parameter and any scale value of the meter pointer on the pointer plate 130, the pulse control parameter of each path of pulse control signal, optionally, for the input and output ports, the pulse control parameter may include a target interval, for the pulse output port, the pulse control parameter may include a pulse duty cycle parameter, and the pulse duty cycle parameter may indicate a proportion of a high level in one pulse period in the pulse control signal, so that in the control process, one step corresponding to the stepping motor 120 in the prior art may be divided into a plurality of microsteps, that is, one pulse control period of the stepping motor 120 may be close to a pulse sequence of a sine wave, thereby realizing microstepping of the stepping motor 120, making the operation of the motor more stable, and reducing the working noise.
Based on the above description, by applying the embodiment of the application, according to the target environmental parameters acquired by the sensor and the current scale value of the instrument pointer on the pointer disc, a plurality of pulse control signals can be output through the pulse output end and the input/output ports of the controller to stably drive the stepping motor to drive the instrument pointer to rotate on the pointer disc to the target scale value corresponding to the environmental parameters, so that on one hand, the realization by adopting a special driving chip can be avoided, and the manufacturing cost of the pointer instrument can be reduced; on the other hand, the instrument pointer can be guaranteed to rotate stably, working noise is reduced, and user experience is improved.
Fig. 3 is a schematic structural diagram of another pointer instrument provided in the embodiment of the present application. Alternatively, as shown in fig. 3, the pointer instrument 100 further includes: the first output terminal of the power module 160 is electrically connected to the power terminal of the controller 110, and the second output terminal of the power module 160 is electrically connected to the power terminal of the level conversion chip 150, so that power can be supplied to the controller 110 and the level conversion chip 150 through the power module 160, thereby ensuring the normal operation of the level conversion chips 150 of the controllers 110 and 110.
Alternatively, the power supply module 160 may include: the input ends of the two power conversion chips are respectively and electrically connected with an input power supply so as to convert the power supply voltage of the input power supply into a first power supply voltage and a second power supply voltage, the first power supply voltage and the second power supply voltage are respectively output through the output ends of the two power conversion chips, and the output ends of the two power conversion chips are a first output end and a second output end.
In some embodiments, the required supply voltages for the controller 110 and the level conversion chip 150 may not be the same, and therefore, it is necessary to introduce two power conversion chips, so that the supply voltage of the input power can be converted into the first supply voltage and the second supply voltage respectively by the two power conversion chips to ensure the normal operation of the controller 110 and the level conversion chip 150. Optionally, the two power conversion chips may be a first switching regulator chip and a second switching regulator chip, respectively, where a first power supply voltage output by the first switching regulator chip may be 5V for supplying power to the level conversion chip, and a second power supply voltage output by the second switching regulator chip may be 3.3V for supplying power to the controller, but not limited thereto.
Fig. 4 is a schematic structural diagram of another pointer instrument provided in the embodiment of the present application. Alternatively, as shown in fig. 4, the pointer instrument 100 may further include: the communication module 170 can communicate with other modules based on interface standards such as RS-232 and RS-485, wherein the communication module 170 is in communication connection with the upper computer 200, and the upper computer 200 is in communication connection with the sensor 140, so that the environmental parameters acquired by the sensor 140 are transmitted to the communication module 170 through the upper computer 200; communication module 170 still with controller 110 communication connection to transmit environmental parameter to controller 110, use this application embodiment, make the environmental parameter that sensor 140 gathered can transmit to controller 110 through host computer 200, make things convenient for sensor 140's setting, can improve pointer instrument 100's applicable scene. Of course, it should be noted that, according to an actual application scenario, the communication module 170 may also be powered by the power module 160, and the application is not limited herein.
Optionally, the communication module 170 and the Controller 110 may be connected through a Controller Area Network (CAN) bus of the Controller 110 to meet a requirement of a vehicle instrument protocol, so that advantages of the CAN bus CAN be fully utilized to improve applicability of the pointer instrument 100.
Alternatively, as shown in fig. 4, the pointer instrument 100 further includes: and the liquid crystal display screen 190, wherein the liquid crystal display screen 190 is in communication connection with the controller 110 to display the environmental parameters. It can be understood that, in some application scenarios, the target environment parameters collected by the sensor 140 may also be displayed through the liquid crystal display screen 190, and different types of environment parameters may be displayed according to the difference of the sensor 140, so that the user may visually read the environment parameters through the liquid crystal display screen 190, thereby providing user experience. Of course, the lcd 190 may also display other parameters, such as time parameter, mileage, hour meter, etc., to improve the applicability of the pointer instrument 100. The size of the liquid crystal display screen 190 is not limited herein, and may be different according to the actual application scenario.
Alternatively, the stepping motor 120 may be a micro stepping motor, and the output ends of the controller 110 may be electrically connected to the dual-drive four-end terminal of the micro stepping motor through the level conversion chip (which may include electronic components such as a transistor, a diode, a resistor, and a capacitor), so as to drive the micro stepping motor to rotate. In some embodiments, the micro stepping motor may have a built-in gear ratio with a reduction ratio of 180:1, the step angle of the output shaft may reach 1/12 ° at the minimum, and the maximum angular speed may be 600 °/S, although the actual parameters of the micro stepping motor are not limited thereto, and may be different according to the actual application scenario.
Fig. 5 is a schematic flowchart of a pointer instrument control method provided in an embodiment of the present application, where the method may be applied to a controller in a pointer instrument in the foregoing embodiment, and as shown in fig. 5, the control method may include:
s101, acquiring target environment parameters acquired by a sensor and current environment parameter values indicated by a meter pointer on a pointer plate.
Optionally, when the sensor is in direct communication connection with the controller, the controller may directly acquire the target environment parameters acquired by the sensor, and when the sensor is in indirect communication connection with the controller, the controller may acquire the target environment parameters acquired by the sensor through the communication module. It can be understood that, for the meter pointer, the meter pointer needs to be driven to rotate by the controller driving the stepping motor every time the meter pointer rotates, therefore, after the meter pointer rotates every time, the controller can store the scale value corresponding to the meter pointer after rotating every time, the scale value is used as the current scale value indicated by the meter pointer during the next rotation, and the scale value and the environmental parameter value have a certain mapping relation, which can be stored in a preset mapping table, therefore, the current environmental parameter value indicated by the meter pointer on the pointer disk can be obtained, and of course, the actual obtaining mode is not limited by this.
And S102, outputting a multi-path pulse control signal to the stepping motor according to the target environment parameter and the current environment parameter value indicated by the instrument pointer on the pointer plate, so that the instrument pointer is driven by the stepping motor to rotate on the pointer plate to a target scale value corresponding to the target environment parameter.
When the multi-channel pulse control signal is determined according to the target environment parameter and the current environment parameter value, the related rotation parameter of the stepping motor can be determined according to the target environment parameter and the current environment parameter value, the multi-channel pulse control signal is determined according to the related rotation parameter of the stepping motor, and then the multi-channel pulse control signal can be output to the stepping motor, so that the instrument pointer is driven by the stepping motor to rotate on the pointer disc to a target scale value corresponding to the target environment parameter.
To sum up, use this application embodiment, realized a plurality of output multichannel pulse control signal that can pass through the controller to can make the instrument pointer rotate the target scale value that corresponds to target environment parameter on the pointer dish under step motor's drive, compare in the mode of current through drive chip drive step motor work, this application can reduce the cost of manufacture of pointer instrument to a certain extent.
Fig. 6 is a schematic flow chart of another pointer instrument control method according to an embodiment of the present application. Alternatively, as shown in fig. 6, if a plurality of pulse output terminals and a plurality of input/output ports of the controller are respectively electrically connected to a plurality of control terminals of the stepping motor; the above-mentioned current environmental parameter value according to the target environmental parameter and the pointer of the meter on the pointer dial may include:
s201, determining a target rotation angle and a target rotation direction of the stepping motor according to the target environment parameter and the current environment parameter value indicated by the instrument pointer on the pointer plate.
The target rotation angle is used for indicating the stepping motor to drive the instrument pointer to rotate on the pointer disc from the current scale value to a target scale value corresponding to the target environment parameter, and the angle parameter required by the stepping motor to rotate.
Alternatively, the target rotation angle and the target rotation direction may be determined according to a difference between the current environmental parameter value and the target environmental parameter, and may also be determined in other manners, for example, may be determined according to a target scale value corresponding to the target environmental parameter and a current scale value indicated by a meter pointer on the pointer dial, which is not limited herein and may be different according to an actual application scenario.
S202, according to the target rotation angle and the target rotation direction, inquiring a preset target table to determine the pulse control signal output by each input/output port and the pulse control signal output by each pulse output port.
The pulse control signal output by each input/output port is a pulse control signal formed by a high level signal output based on a target interval, and the pulse control signal output by each pulse output port is a pulse control signal formed by a target pulse duty ratio parameter.
Optionally, the preset target table may be queried according to the target rotation angle and the target rotation direction to determine a control parameter of the multiple pulse control signals, and then the pulse control signal output by each input/output port and the pulse control signal output by each pulse output port may be determined according to the control parameter, and the multiple pulse control signals are output to the stepping motor, so that the meter pointer is driven by the stepping motor to rotate on the pointer disk to a target scale value corresponding to the environmental parameter.
In some embodiments, the step motor may be a micro step motor, the micro step motor may include a first driving end and a second driving end, optionally, the first pulse output end and the first input/output end of the controller may be electrically connected to the first driving end, and the second pulse output end and the second input/output end of the controller may be electrically connected to the second driving end, so that the micro step motor may rotate according to the multiple pulse control signals, optionally, the rotation direction may be clockwise or counterclockwise, which is not limited herein.
Fig. 7 is a schematic flowchart of another pointer instrument control method according to an embodiment of the present application. Optionally, the preset target table includes: mapping relations between the angle to be rotated, a preset target interval and a preset pulse duty ratio parameter; as shown in fig. 7, the querying a preset target table to determine the pulse control signal output by each input/output port and the pulse control signal output by each pulse output port according to the target rotation angle and the target rotation direction includes:
s301, according to the target rotation angle, inquiring a preset target table to determine a target interval corresponding to the target rotation angle and a target pulse duty ratio parameter.
The target interval can indicate the time of the input/output port for outputting the high-level signal, the high-level signal can be different according to different application scenes, the target pulse duty cycle parameter can indicate the proportion of the high level in one pulse period, the value of the target pulse duty cycle parameter can be any value between 0 and 1, and different rotating angles can correspond to different target intervals and different target pulse duty cycle parameters.
Since the preset target table includes: the mapping relation between the rotation angle and the preset target interval and between the rotation angle and the preset pulse duty ratio parameter can be obtained, therefore, for the target rotation angle, the preset target table can be inquired to determine the target interval and the target pulse duty ratio parameter corresponding to the target rotation angle, the multi-channel pulse control signal of the controller can be set according to the target pulse duty ratio parameter, the stepping motor can rotate in a sine wave mode, and the stable rotation of the instrument pointer is guaranteed.
S302, determining a pulse control signal output by each input/output port and a pulse control signal output by each pulse output port according to a target interval corresponding to a target rotation angle, a target pulse duty ratio parameter and a target rotation direction.
Based on the foregoing description, it may be determined that the pulse control signal output by each input/output port is the pulse control signal formed based on the high level signal output by the target interval according to the determined target interval, the target pulse duty ratio parameter and the target rotation direction, and the pulse control signal output by each pulse output port is the pulse control signal formed based on the target pulse duty ratio parameter, so that in the control process, one step corresponding to the stepping motor in the prior art may be divided into a plurality of microsteps, that is, one pulse control period of the stepping motor may be close to the pulse sequence of the sine wave, so as to implement microstepping of the stepping motor, so that the operation of the motor is more stable, and the working noise is reduced.
Alternatively, in some embodiments, when the stepping motor is a micro stepping motor, the process setting controller described below may be configured to output multiple pulse control signals. Based on the above description, the target rotation angle and the target rotation direction of the micro stepping motor can be determined according to the target environment parameter and the current environment parameter value indicated by the instrument pointer on the pointer plate; according to the target rotation angle, inquiring a preset target table to determine a target interval corresponding to the target rotation angle and a target pulse duty ratio parameter; in addition, a differential step number diffStep of the micro stepper motor may be determined according to the target rotation angle (optionally, the differential step number is the differential step number corresponding to the target rotation angle × the unit rotation angle), and a differential time M/differential step corresponding to the differential step number diffStep may be determined according to the differential step number diffStep; furthermore, the controller may be configured to output a multi-path pulse control signal according to a target interval, a target pulse duty ratio parameter, a differential time and a target rotation direction, where a value of M may be any value between 350 and 600, for example, 540, 560, 600, and the like, and the value may be set according to human experience, which is not limited herein.
Alternatively, specifically, during program control, the differentiated time M/diffStep and the accumulated timing time t1Count may be compared, and if the accumulated timing time is greater than the differentiated time M/diffStep, the step motor may be controlled to rotate. Based on the description, it can be understood that when the stepping motor just rotates, the differential step value diffStep is larger, the differential time M/diffStep is smaller, the accumulated time of the differential time t1Count is less, the motor can rotate in a short time, and the rotating speed of the instrument pointer on the pointer disk is higher when viewed from the instrument panel; after the motor rotates, the diffStep micro-step numerical value is continuously reduced, the M/diffStep is continuously increased, the motor rotation time is also continuously increased, and the rotation speed of the instrument pointer on the pointer plate is slower than that before when viewed from the instrument panel; according to the principle, until the diffStep micro-step numerical value is equal to 0, the instrument pointer rotates on the pointer disk to the target scale value corresponding to the target environment parameter. In the process, because the multi-channel pulse control signals of the controller can be set according to the target pulse duty ratio parameters, the stepping motor can rotate in a sine wave mode, the stable rotation of the instrument pointer is ensured, and the working noise is reduced; because can be according to differential time, the multichannel pulse control signal of controller sets up, consequently, when step motor rotates the in-process and drives the instrument pointer and rotate on the pointer dish, can avoid the instrument pointer to shake on the pointer dish, improve user experience.
These above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
Fig. 8 is a schematic structural diagram of an instrument controller according to an embodiment of the present disclosure, where the instrument controller may be integrated in a terminal device or a chip of the terminal device, and the terminal may be a computing device with an image processing function. As shown in fig. 8, the meter controller may include: a processor 210, a storage medium 220, and a bus 230, the storage medium 220 storing machine-readable instructions executable by the processor 210, the processor 210 communicating with the storage medium 220 via the bus 230 when the meter controller is operating, the processor 210 executing the machine-readable instructions to perform the steps of the above-described method embodiments. The specific implementation and technical effects are similar, and are not described herein again.
Optionally, the present application further provides a storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program performs the steps of the above method embodiments. The specific implementation and technical effects are similar, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A pointer instrument, comprising: the device comprises a controller, a stepping motor and a pointer disc;
the input end of the controller is in communication connection with a sensor so as to acquire target environment parameters acquired by the sensor; a plurality of output ends of the controller are electrically connected with a plurality of control ends of the stepping motor, so that the controller outputs a plurality of paths of pulse control signals to the stepping motor according to the target environment parameters and the current environment parameter values indicated by the instrument pointer on the pointer plate;
the driving end of the stepping motor is in transmission connection with an instrument pointer on the pointer disc, so that the instrument pointer is driven by the stepping motor to rotate on the pointer disc to a target scale value corresponding to the target environmental parameter.
2. The pointer instrument as recited in claim 1, further comprising: a level conversion chip; the multiple input ends of the level conversion chip are electrically connected with the multiple output ends of the controller, and the multiple output ends of the level conversion chip are respectively electrically connected with the multiple control ends of the stepping motor so as to output the multi-path pulse control signals to the stepping motor after level conversion.
3. The pointer instrument as recited in claim 1, wherein a plurality of pulse output terminals of the controller are electrically connected to a plurality of control terminals of the stepping motor, respectively, so as to output a plurality of paths of pulse control signals to the stepping motor, each path of control signal being a path of pulse control signal.
4. The pointer instrument as claimed in claim 1, wherein the controller has a plurality of pulse output terminals and a plurality of input/output ports electrically connected to the control terminals of the stepping motor respectively, so as to output a plurality of paths of pulse control signals to the stepping motor, each path of pulse control signal being a path of pulse control signal;
wherein, the pulse control signal of every input/output port output is: the controller inquires a preset target table to obtain a pulse control signal formed by a high level signal output based on a target interval based on the target environment parameter and the current scale value of the instrument pointer on the pointer disc; the pulse control signal output by each pulse output end is: and the controller inquires a preset target table to obtain a pulse control signal formed based on the target pulse duty ratio parameter based on the target environment parameter and the current scale value of the instrument pointer on the pointer disc.
5. The pointer instrument as recited in claim 2, further comprising: and a first output end of the power supply module is electrically connected with a power end of the controller, and a second output end of the power supply module is electrically connected with a power end of the level conversion chip.
6. The pointer instrument as recited in claim 5, wherein the power supply module comprises: two power conversion chips, two the input of power conversion chip is the electricity connection input power respectively, in order with input power's supply voltage converts first supply voltage to and second supply voltage, and respectively through two power conversion chip's output is exported, two power conversion chip's output does first output with the second output.
7. The pointer instrument as recited in claim 1, further comprising: a communication module;
the communication module is in communication connection with an upper computer, and the upper computer is in communication connection with the sensor, so that the target environment parameters acquired by the sensor are transmitted to the communication module through the upper computer;
the communication module is also in communication connection with the controller to transmit the target environmental parameter to the controller.
8. The pointer instrument as recited in claim 7, wherein the communication module is communicatively coupled to the controller via a CAN bus.
9. The pointer instrument as recited in claim 1, further comprising: and the liquid crystal display screen is in communication connection with the controller so as to display the target environment parameters.
10. The pointer instrument as claimed in any one of claims 1-9, wherein the stepping motor is a micro stepping motor.
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| CN202121045914.1U CN214607086U (en) | 2021-05-14 | 2021-05-14 | Pointer instrument |
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| CN202121045914.1U CN214607086U (en) | 2021-05-14 | 2021-05-14 | Pointer instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113071312A (en) * | 2021-05-14 | 2021-07-06 | 郑州捷安高科股份有限公司 | Pointer instrument, pointer instrument control method, instrument controller, and medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113071312A (en) * | 2021-05-14 | 2021-07-06 | 郑州捷安高科股份有限公司 | Pointer instrument, pointer instrument control method, instrument controller, and medium |
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