CN111109780A - Wristband equipment and immersion liquid detection method thereof - Google Patents
Wristband equipment and immersion liquid detection method thereof Download PDFInfo
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- CN111109780A CN111109780A CN201911423945.3A CN201911423945A CN111109780A CN 111109780 A CN111109780 A CN 111109780A CN 201911423945 A CN201911423945 A CN 201911423945A CN 111109780 A CN111109780 A CN 111109780A
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- immersion
- key
- main controller
- liquid
- wristband
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
- A44C5/0007—Bracelets specially adapted for other functions or with means for attaching other articles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/02141—Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1116—Determining posture transitions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1118—Determining activity level
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6802—Sensor mounted on worn items
- A61B5/681—Wristwatch-type devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
Abstract
The invention discloses a wrist strap device and an immersion liquid detection method thereof, wherein the wrist strap device comprises: the equipment main body comprises a shell and an electric control plate arranged in the shell; the wrist strap is connected with the equipment main body through a connecting mechanism; the key is arranged on the wrist strap; the key input switch circuit is arranged on the electric control board and is electrically connected with the keys; a liquid detection port provided in the housing or the wristband, the liquid detection port being configured to output an immersion detection signal when immersion of liquid is detected; and the main controller is arranged on the electric control board and is electrically connected with the liquid detection port, and the main controller is configured to control the key input switch circuit to be disconnected from the electrical connection with the keys when receiving the immersion liquid detection signal. The wrist strap device can prevent the problem that the key is triggered by mistake due to electric leakage caused by the fact that the wrist strap device is immersed into liquid.
Description
Technical Field
The invention relates to the technical field of electronic circuits, in particular to a wrist strap device and an immersion liquid detection method thereof.
Background
The button of present intelligence wearing class product occupies certain mainboard layout space in the main part, and the mechanical strength requirement of button and the waterproof requirement of product have increased structural design's the degree of difficulty simultaneously. If the key is transferred from the main body to the wristband, the electrical connection between the key and the main body may cause electrical leakage and incorrect operation of the key if it comes into contact with external liquid.
Disclosure of Invention
The invention mainly aims to provide a wrist strap device and an immersion liquid detection method thereof, aiming at improving the waterproof performance of the wrist strap device.
To achieve the above object, the present invention provides a wristband apparatus including:
the equipment main body comprises a shell and an electric control plate arranged in the shell;
a wrist strap connected to the apparatus main body through a connection mechanism;
the key is arranged on the wrist strap;
the key input switch circuit is arranged on the electric control board and is electrically connected with the keys;
a liquid detection port provided on the housing or the wristband, the liquid detection port being configured to output an immersion detection signal when immersion of liquid is detected;
and the main controller is arranged on the electric control board and is electrically connected with the liquid detection port, and the main controller is configured to control the key input switch circuit to be disconnected from the electrical connection with the keys when the immersion liquid detection signal is received.
Optionally, the main controller is further configured to, upon receiving the immersion detection signal, start a swimming motion mode and output a control signal in a flow corresponding to the swimming mode.
Optionally, the wrist strap device further comprises an acceleration sensor disposed in the housing and electrically connected to the main controller, wherein the acceleration sensor is configured to detect a motion of a user and output a motion detection signal to the main controller when detecting a motion of the user.
Optionally, the main controller is further configured to exit the swimming motion mode when it is determined that the user does not move within a first preset time according to the motion detection signal output by the acceleration sensor.
Optionally, the liquid detection port includes two electrical conductors, the two electrical conductors are disposed on the housing or the wristband at intervals, and when the two electrical conductors are communicated by the conductive liquid, the immersion liquid detection signal is output.
Optionally, the wristband equipment further comprises an immersion detection circuit, a controlled end of the immersion detection circuit is connected with a control end of the main controller, and a detection end of the immersion detection circuit is electrically connected with a common end of the main controller and the electric conductor;
the main controller is also configured to output a detection control signal at a first preset period;
the immersion detection circuit is configured to detect a connection state between the two electrical conductors at the first preset period according to a detection control signal output by the main controller.
Optionally, the immersion liquid detection circuit includes a first switching tube, a first pull-up resistor, a first voltage dividing resistor, and a first electrostatic protection diode; the controlled end of the first switch tube is the controlled end of the immersion detection circuit, the input end of the first switch tube is connected with a pull-up power supply, the output end of the first switch tube is connected with the first end of the first pull-up resistor, and the second end of the first pull-up resistor is the detection end of the immersion detection circuit;
the input end of the first electrostatic protection diode is connected with one of the two conductors, and the output end of the first electrostatic protection diode and the other of the two conductors are grounded;
the first end of the first divider resistor is connected with the second end of the first pull-up resistor, and the second end of the first divider resistor is grounded.
Optionally, the key input switch circuit includes a second switch tube, a second pull-up resistor, and a second esd protection diode; the controlled end of the second switch tube is connected with the control end of the main controller, the input end of the second switch tube is connected with one contact of the key, the output end of the second switch tube is interconnected with the first end of the second pull-up resistor and the key signal input end of the main controller, and the second end of the second pull-up resistor is connected with a pull-up power supply;
the input end of the second electrostatic protection diode is connected with one contact of the key, and the output end of the second electrostatic protection diode and the other contact of the key are both grounded;
the key input switch circuit further comprises a first capacitor, the first end of the first capacitor is connected with the input end of the second switch tube, and the second end of the first capacitor is grounded.
Optionally, the key is provided at an end of the wristband near the device body.
Optionally, the wrist strap is further provided with a reinforcing rib, and the position of the reinforcing rib corresponds to the position of the key.
The invention also provides an immersion liquid detection method of the wrist strap equipment, wherein the wrist strap equipment comprises a liquid detection port, an equipment main body, a wrist strap and keys arranged on the wrist strap, and the keys are arranged on the shell or the wrist strap; the immersion detecting method of the wrist band device comprises the following steps:
when the liquid detection port detects that liquid is immersed, an immersion liquid detection signal is output;
and when the immersion liquid detection signal is received, stopping accessing the key signal input by the key.
Optionally, the immersion detecting method of the wristband device further includes:
and when the immersion liquid detection signal is received, starting a swimming motion mode, and outputting a control signal according to a flow corresponding to the swimming mode.
Optionally, the step of starting the swimming motion mode and outputting a control signal in a flow corresponding to the swimming mode when the immersion detection signal is received specifically includes:
detecting a motion action of a user upon receiving the immersion detection signal;
outputting a motion detection signal when the motion of the user is detected;
and when the user is confirmed not to move within the first preset time according to the output motion detection signal, exiting the swimming motion mode.
The wrist strap device is provided with the key input switch circuit and the liquid detection port for water inlet detection, and the liquid detection port is used for detecting whether the wrist strap device is immersed in liquid or not and outputting a corresponding detection signal. Specifically, when the wrist strap device is not immersed in liquid, the liquid detection port outputs a liquid immersion detection signal with a preset voltage value, the key input switch circuit is closed at the moment, and a user can send a key operation instruction through the key and the key input switch circuit so that the main controller outputs a corresponding control signal according to the key operation instruction, and control of a corresponding functional module in the wrist strap device is achieved, for example, audio signals are played, and photographing, recording and the like are performed.
When the wrist strap equipment is immersed into liquid, the liquid detection port outputs a liquid immersion detection signal different from a preset voltage value, the key input switch circuit is disconnected at the moment, a user cannot send a key operation instruction through the key and the key input switch circuit, and the main controller cannot receive the key operation instruction, so that a corresponding control signal cannot be output according to the key operation instruction, and a program for stopping the key function is operated. Therefore, the wrist strap equipment can be prevented from being immersed into liquid, and the button is prevented from being triggered by mistake due to electric leakage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of a wristband apparatus according to an embodiment of the present invention;
FIG. 2 is a side view of one embodiment of the wristband apparatus of the present invention;
FIG. 3 is a functional block diagram of an embodiment of the wristband apparatus of the present invention;
FIG. 4 is a schematic circuit diagram of an embodiment of the wristband apparatus of the present invention;
FIG. 5 is a schematic circuit diagram of another embodiment of the wristband apparatus of the present invention;
FIG. 6 is a flowchart of an embodiment of an immersion detecting method of the wristband apparatus according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Equipment main body | Q1 | |
| 200 | Wrist band | Q2 | |
| 300 | Push-button | R1 | First pull- |
| 400 | Liquid detection port | R2 | First |
| 110 | Shell body | R3 | Second pull- |
| 500 | Reinforcing rib | R4 | First pull-down |
| 10 | Key input switch circuit | D1 | First |
| 20 | Main controller | D2 | Second |
| 30 | Acceleration sensor | C1 | |
| 40 | Immersion liquid detection circuit |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The invention provides a wristband device.
Referring to fig. 1 to 5, in an embodiment of the present invention, the wristband apparatus includes:
the device body 100 comprises a housing 110 and an electric control board arranged in the housing 110;
a wrist band 200, the wrist band 200 being connected to the apparatus body 100 by a connecting mechanism;
a key 300 disposed on the wrist band 200;
the key input switch circuit 10 is arranged on the electric control board and is electrically connected with the keys 300;
a liquid detection port 400 provided in the case 110 or the wristband 200, the liquid detection port 400 being configured to output an immersion liquid detection signal when the immersion of liquid is detected;
and a main controller 20 disposed on the electronic control board and electrically connected to the liquid detection port 400, wherein the main controller 20 is configured to control the key input switch circuit 10 to be electrically disconnected from the key 300 when receiving the immersion detection signal.
In this embodiment, the liquid detection port 400 has two electrical conductors, the main controller 20 is electrically connected to any one of the two electrical conductors, the main controller 20 is further connected to the key 300 through the key input switch circuit 10, and the main controller 20 is further configured to output a corresponding control signal according to an accessed key 300 signal when the key input switch circuit 10 is closed.
In this embodiment, the casing 110 of the device main body 100 is enclosed by a lower casing and a screen, the screen may be a flexible screen, and the screen may be a square or a circle. The screen may be a touch screen, which may collect touch operations of a user (e.g., operations of a user on or near the touch screen using a finger, a stylus, or any other suitable object or accessory) thereon or nearby, and drive corresponding circuit structures according to a preset program. In addition, the touch screen can be realized by various types such as resistance type, capacitance type, infrared ray, surface acoustic wave and the like. On the case 110, an interface through which at least one external device can be connected to the wristband apparatus may be further provided. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the wristband apparatus or may be used to transmit data between the wristband apparatus and an external device.
The device body 100 and the wrist band 200 are detachably connected by a connecting mechanism, the wrist band 200 may be a flat strip-shaped band, and the material of the lower case and the wrist band 200 may be metal or nonmetal. In one embodiment, the housing 110 is further provided with a connecting ear seat, and both ends of the wrist strap 200 are provided with a connecting protrusion along the length direction, and the connecting protrusion is provided with a connecting hole; the connection mechanism may be an insulating transition shaft, the insulating transition shaft plays an insulating role, a cylindrical portion of the insulating transition shaft is inserted into the connection hole and the connection ear seat at the end of the wrist strap 200, and the connection holes of the wrist strap 200 are respectively connected with the connection ear seats at both sides of the housing 110 through the connection mechanism.
The main controller 20 is optionally implemented by microprocessors such as a single chip, a DSP, and an FPGA, and the main controller 20 is a control center of the wristband device, and is connected to each part of the entire wristband device by using various interfaces and lines, and executes various functions and processes data of the wristband device by running or executing software programs and/or modules stored in the memory and calling data stored in the memory, thereby integrally monitoring the wristband device. The main controller 20 may include one or more processing units; the main controller 20 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the main controller 20. The wrist strap device may further include a wireless communication module, such as a bluetooth module, a WIFF module, and an infrared transceiver module, and the main controller 20 may be connected to an external device, such as a bluetooth headset, a mobile phone, and other mobile terminals, through the above wireless communication module, so as to output audio signals, receive and transmit information, and make a call.
The button 300 may be disposed at an end of the wrist band 200 near the housing 110, and may be a mechanical button 300 switch, a rocker type button 300, a rotary type button 300 or a multi-function combination type button 300, which is not limited herein. The connecting ear seat of the casing 110 may be made of metal, and the surface of the connecting ear seat is insulated, and the key 300 is electrically connected to the electric control board in the casing 110 through the metal connecting ear seat. The key 300 can realize various modes such as short pressing, long pressing, rotation and the like, thereby realizing various operation effects. The number of the keys 300 may be one or more, and when the number is plural, plural different keys 300 may be used in combination to realize various operation functions.
The keys 300 are disposed on the wrist band 200, and need to be electrically connected to the electronic control board through a conductive member, however, there is usually a gap between the wrist band 200 and the casing 110, and the casing 110 needs to lead out a conductive terminal, which makes the insulation treatment of the wrist band device to the key 300 portion difficult to achieve, especially, the waterproof function. Therefore, when a user wears the wrist band device to perform a sport or work in water or other liquid, the wrist band device needs to be waterproofed to prevent the wrist band device from leaking electricity or misoperation of the key 300 due to the contact of the key 300 portion with external liquid after entering the water.
To this end, the present invention provides a key input switch circuit 10 and a liquid detection port 400 for water entry detection in the wrist band device, detects whether the wrist band device is immersed in liquid through the liquid detection port 400, and outputs a corresponding detection signal. Thus, it is possible to determine whether the wrist band device is immersed in the liquid according to whether the voltage value signal of the liquid detection port 400 is changed. Specifically, when the wrist band device is not immersed in liquid, the liquid detection port 400 outputs a liquid immersion detection signal with a preset voltage value, at this time, the key input switch circuit 10 is closed, and a user can send an operation instruction of the key 300 through the key 300 and the key input switch circuit 10, so that the main controller 20 outputs a corresponding control signal according to the operation instruction of the key 300, and control of a corresponding function module in the wrist band device is realized, for example, playing an audio signal, taking a picture, recording a sound, and the like.
When the wrist band device is immersed in liquid, the liquid detection port 400 outputs a liquid immersion detection signal different from a preset voltage value, at this time, the key input switch circuit 10 is turned off, the user cannot send an operation instruction of the key 300 through the key 300 and the key input switch circuit 10, and the main controller 20 cannot receive the operation instruction of the key 300, so that a corresponding control signal is not output according to the operation instruction of the key 300, thereby operating a program for stopping the function of the key 300. Therefore, the wrist strap device can be prevented from being immersed into liquid, so that the electricity leakage is avoided, and the key 300 is prevented from being triggered by mistake.
Referring to fig. 1, in one embodiment, the main controller 20 is further configured to, upon receiving the dip detection signal, turn on a swimming motion mode and output a control signal in a flow corresponding to the swimming mode.
In this embodiment, the wrist band device may be a sports watch, and a detection device for detecting each parameter of the user during exercise, such as a timer, a gravity sensor, and an infrared sensor, is further provided in the wrist band device. Of course, in other embodiments, the setting may be performed according to requirements, for example, a detection sensor for measuring human body parameters such as blood pressure, pulse, and heartbeat may also be provided, which is not limited herein. The user needs to monitor and identify the state of the swimming motion while swimming, and needs to manually enter the swimming mode before the user enters water, for example, by adjusting the button 300. However, it may happen that the user forgets to adjust the swimming device or manually exits the swimming mode after the exercise is finished, which causes great inconvenience to the user. For this reason, the main controller 20 of the present embodiment may also determine that the user has entered water and needs to perform a movement when detecting the immersion detection signal, thereby turning on the swimming mode, and output a control signal in a flow corresponding to the swimming mode, so that the wrist band device performs various functions in the movement mode, for example, recording swimming motion data of the user, such as swimming distance, swimming time, stroke number, storing heart rate data, and the like.
After the user has discharged water, the liquid detection port 400 detects that no liquid is immersed and outputs an immersion detection signal, and the main controller 20 can exit the swimming mode upon receiving the immersion detection signal. Therefore, whether the user carries out swimming movement or not can be automatically identified, the swimming mode is automatically started when the user needs to carry out the swimming movement is identified, the swimming mode is quitted when the user finishes the swimming movement is identified, and the use of the key 300 is recovered. The wrist strap device does not need manual operation of a user, and is beneficial to simplifying the operation process of the user when the wrist strap device is used, so that the use convenience of the wrist strap device is provided.
Referring to fig. 3, in an embodiment, the wrist band apparatus further includes an acceleration sensor 30, the acceleration sensor 30 is disposed in the housing 110 and electrically connected to the main controller 20, and the acceleration sensor 30 is configured to detect a motion action of a user and output a motion detection signal to the main controller 20 when detecting the motion of the user.
In this embodiment, the acceleration sensor 30 may be a three-axis acceleration sensor, and the acceleration sensor 30 may collect three-axis acceleration data of the user, so as to determine whether the athlete moves according to a matching result of the collected test data and preset template data, and record swimming motion data of the user, such as swimming posture, swimming distance, water stroke number, swimming speed, and the like, when detecting that the athlete moves.
Referring to fig. 3, in an embodiment, the main controller 20 is further configured to exit the swimming mode when it is determined that the user does not move within a first preset time according to the motion detection signal output by the acceleration sensor 30.
It should be noted that the wrist band device may fall into water during use, or may return to normal after a short immersion phenomenon occurs due to rain or the like. The embodiment may further detect the state of the wrist band device through the acceleration sensor 30, and if the wrist band device is not moved within the first preset time, it may be determined that the user does not need to perform a swimming movement, so as to exit the swimming mode, and if the wrist band device is detected not to be immersed in the liquid, the function of the button 300 may be recovered, otherwise, the operation of the button 300 may be continuously stopped. And if the user moves within the first preset time, continuing to record swimming data during the movement.
Referring to fig. 1 to 5, in an embodiment, the wristband apparatus further includes an immersion liquid detection circuit 40, a controlled end of the immersion liquid detection circuit 40 is connected with a control end of the main controller 20, and a detection end of the immersion liquid detection circuit 40 is electrically connected with a common end of the main controller 20 and the electrical conductor;
the main controller 20 is further configured to output a detection control signal at a first preset period;
the immersion detecting circuit 40 is configured to detect the connection state of the liquid detecting port 400 at the first preset period according to a detection control signal output from the main controller 20.
It can be understood that the user does not perform swimming in real time, and in order to reduce the power consumption of the wristband apparatus itself, the main controller 20 periodically controls the immersion detecting circuit 40 to detect, so that the immersion of the liquid into the liquid detecting port 400 is realized, and the power consumption of the wristband apparatus itself can be reduced.
Referring to fig. 4, in an embodiment, the immersion detecting circuit 40 includes a first switch Q1, a first pull-up resistor R1, a first voltage-dividing resistor R2, and a first esd protection diode D1; the controlled end of the first switch tube Q1 is the controlled end of the immersion liquid detection circuit 40, the input end of the first switch tube Q1 is connected to a pull-up power supply, the output end of the first switch tube Q1 is connected to the first end of the first pull-up resistor R1, and the second end of the first pull-up resistor R1 is the detection end of the immersion liquid detection circuit 40;
the input end of the first electrostatic protection diode D1 is connected with one of the two conductors, and the output end of the first electrostatic protection diode D1 is grounded with the other of the two conductors;
the immersion detection circuit 40 further comprises a filter capacitor, one end of the filter capacitor is connected with the second end of the first pull-up resistor R1, and the second end of the filter capacitor is grounded;
a first terminal of the first voltage dividing resistor R2 is connected to a second terminal of the first pull-up resistor R1, and a second terminal of the first voltage dividing resistor R2 is grounded.
In this embodiment, the filter capacitor is used to filter out the clutter signals output by the liquid detection port 400, so as to improve the detection accuracy of the liquid detection port 400. The first switch tube Q1 may be a MOS tube, a triode, or other switch tubes, and this embodiment may be a P-MOS tube. The first switching tube Q1 is turned on upon receiving a low level control signal output from the main controller 20 based on the control of the main controller 20, thereby outputting a pull-up power of a preset voltage value to the main controller 20 upon being turned on. And is turned off when receiving a high level control signal outputted from the main controller 20, and the detection circuit does not work at this time. The first voltage dividing resistor R2 and the first pull-up resistor R1 form a voltage dividing circuit, and are configured to divide the voltage of the pull-up power source and output the divided voltage to the main controller 20 when the first switch tube Q1 is turned on, so as to output an electrical signal with a preset voltage value. According to the voltage division principle, the preset voltage value output to the main controller 20 can be adjusted by adjusting the voltage division ratio of the first voltage division resistor R2 and the first pull-up resistor R1, the preset voltage value can be used as a reference voltage value, the main controller 20 can compare the voltage value output by the liquid detection port 400 with the reference voltage value, and if the liquid detection port 400 is immersed in liquid and the voltage value received by the main controller 20 is changed, it is determined whether the wearable device is immersed in the liquid. It is understood that liquids with different water qualities have different on-resistances, for example, water with higher purity has a higher resistance, and vice versa has a lower resistance. Therefore, if the wrist band device is immersed in water with high purity, the voltage output from the liquid detection port 400 will be lower than that when water is not introduced, and the difference between the two is the first variable voltage value, and if the wrist band device is immersed in water with low purity, the voltage output from the liquid detection port 400 will be lower than that when water is not introduced, and the difference between the two is the second variable voltage value, at this time, the voltage at the feedback end of the main controller 20 can even be pulled down to the ground. The first variable voltage value and the second variable voltage value are different due to different water qualities, and the water quality of the liquid can be detected according to the difference between the output voltage value of the liquid detection port 400 and the preset voltage value, so that a user can know the current water quality condition of the liquid.
In this way, if the user does not perform the swimming exercise and the user is using the swimming exercise normally, the main controller 20 keeps pulling up the level of the detection port by the pull-up power source output by the first voltage dividing resistor R2 and the first pull-up resistor R1 during the detection period. If the conductive liquid is immersed at this time, the liquid detection port 400 is connected to the conductive liquid to output an immersion detection signal different from the preset voltage value, and the level of the detection port of the main controller 20 changes from the preset voltage value to the change voltage value to change, so that it can be determined that the wristband device is immersed in water at this time. After the wrist strap device is out of water, the liquid detection port 400 is electrically disconnected, and the level of the detection port of the main controller 20 is restored to the preset voltage value, so that the wrist strap device can be determined to leave the water, and the swimming mode can be exited. The first esd protection diode D1 is used for absorbing static electricity of the liquid detection port 400. When the circuit works normally, the first electrostatic protection diode D1 is in a high-impedance state, and the normal operation of the circuit is not affected. When abnormal overvoltage occurs in the circuit and the breakdown voltage is reached, the first esd protection diode D1 changes from a high resistance state to a low resistance state, providing a low resistance conduction path for the transient current, and clamping the voltage inputted from the key 300 within a safe range to prevent the main controller 20 from being damaged by the excessive voltage. When the abnormal overvoltage disappears, the first esd protection diode D1 returns to the high-resistance state, and the circuit operates normally. The filter capacitor is used for filtering noise signals output by the liquid detection port 400, so as to improve the detection precision of the liquid detection port 400.
Referring to fig. 5, in an embodiment, the key input switch circuit 10 includes a second switch Q2, a second pull-up resistor R3, a first pull-down resistor R4, and a second esd protection diode D2; a controlled end of the second switch tube Q2 is connected to a control end of the main controller 20, an input end of the second switch tube Q2 is connected to a pull-up power supply, and a first end of the second pull-up resistor R3 of the second switch tube Q2 is connected; a second terminal of the second pull-up resistor R3 is interconnected with a first terminal of the first pull-down resistor R4 and the key 300 signal input terminal of the main controller 20; a second end of the first pull-down resistor R4 is connected with one contact of the key 300;
the input end of the second electrostatic protection diode D2 is connected with one contact point of the key 300, and the output end of the second electrostatic protection diode D2 and the other contact point of the key 300 are both grounded;
the key input switch circuit 10 further includes a first capacitor C1, a first end of the first capacitor C1 is connected to the input end of the second switch Q2, and a second end of the first capacitor C1 is grounded.
In this embodiment, the second switch Q2 may be a MOS transistor, a triode, or other switch transistor, and this embodiment may be a P-MOS transistor. The second switching tube Q2 is turned on upon receiving a low level control signal output from the main controller 20 based on the control of the main controller 20, thereby outputting a high level pull-up power to the main controller 20 when turned on. And is turned off when receiving a high level control signal outputted from the main controller 20, at which time the key input switching circuit 10 does not operate.
If the user does not perform the swimming exercise and the user uses the device normally, the second switch tube Q2 is normally turned on, and if the user does not input the key 300 signal, the level of the input port of the key 300 of the main controller 20 is continuously pulled up by the pull-up power supply. If the user inputs the key 300 signal, the level of the input port of the key 300 of the main controller 20 jumps from high level to low level, and the operation instruction of the user can be determined according to the number of key inputs, and the corresponding function of the wrist band device is realized. The main controller 20 can determine whether the key 300 is actuated according to the high/low level state of the input port of the key 300.
If the conductive liquid is immersed at this time, the main controller 20 outputs an immersion detection signal different from the preset voltage value according to the fact that the liquid detection port 400 is communicated with the conductive liquid, it is determined that the wristband device is immersed in water at this time, the main controller 20 outputs a high-level control signal to control the second switch tube Q2 to be turned off, the main controller 20 does not respond to the voltage change of the input port of the key 300 any more, and the input port of the key 300 can be configured to be in a high-resistance state to prevent the leakage of the current from the input port of the key 300. After the wrist band device is drained, the liquid detection port 400 is electrically disconnected, and the main controller 20 resumes the conduction of the second switch tube Q2, and continues to receive the high/low level of the input port of the button 300. The second esd protection diode D2 is used for the static electricity output by the key 300. When the circuit works normally, the second esd protection diode D2 is in a high-impedance state, and the normal operation of the circuit is not affected. When abnormal overvoltage occurs in the circuit and the breakdown voltage is reached, the second esd protection diode D2 changes from a high resistance state to a low resistance state, providing a low impedance conduction path for the transient current, clamping the voltage of the liquid detection port 400 within a safe range, and preventing the main controller 20 from being damaged by the excessive voltage. When the abnormal overvoltage disappears, the second esd protection diode D2 returns to the high-resistance state, and the circuit operates normally. The first capacitor C1 is used for filtering noise in the signal of the key 300 and for preventing the key from shaking.
Referring to fig. 2, in one embodiment, the wrist band 200 is further provided with a stiffener 500, and the position of the stiffener 500 corresponds to the position of the key 300.
In this embodiment, the keys 300 are disposed at the end of the wristband 200 near the housing 110, i.e., at the connection between the wristband 200 and the housing 110. The frequency of use of the key 300 is high, in this embodiment, the reinforcing rib 500 is further disposed at the position corresponding to the key 300, and by the reinforcing rib 500 being disposed at the installation region of the key 300 and being parallel to the wrist band 200, when the key 300 vibrates, the reinforcing rib 500 can divide the tension in the vibration direction of the key 300, and the reinforcing rib 500 is disposed at the connection position of the wrist band 200 and the device main body 100, so that the connection structure strength can be further increased.
The wristband device further comprises at least one sensor (not shown), such as a light sensor, a motion sensor. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display screen according to the brightness of ambient light, and a proximity sensor that turns off the display screen and/or backlight when the wristband device is moved to the ear. As one type of motion sensor, an acceleration sensor may detect the magnitude of acceleration in each direction (generally, three axes), and may detect the magnitude and direction of gravity when stationary, thereby implementing the acquisition of motion data and the like.
In one embodiment, the wrist band device further comprises a proximity sensor, and the wrist band device can realize non-contact operation and provides more operation modes by adopting the proximity sensor.
In one embodiment, the wristband device further comprises a heart rate sensor, which enables detection of the heart rate by being in close proximity to the user when worn.
The invention also provides an immersion liquid detection method of the wrist strap equipment, wherein the wrist strap equipment comprises a liquid detection port, an equipment main body, a wrist strap and keys arranged on the wrist strap, and the keys are arranged on the shell or the wrist strap; referring to fig. 6, the immersion detecting method of the wristband apparatus includes the steps of:
step S100, when the liquid detection port detects that liquid is immersed, an immersion liquid detection signal is output;
and step S200, stopping accessing the key signal input by the key when the immersion liquid detection signal is received.
In this embodiment, the keys of the wristband device are disposed on the wristband and need to be electrically connected to the electronic control board through the conductive members, however, a gap usually exists between the wristband and the housing, and the housing needs to lead out the conductive terminals, so that the insulation processing of the wristband device on the keys 300 is difficult to achieve, especially, the waterproof function. Therefore, when a user wears the wrist band device to perform a sport or work in water or other liquid, the wrist band device needs to be waterproofed to prevent the wrist band device from being exposed to external liquid after entering water, which may cause system leakage or key malfunction.
When the wrist strap equipment is not immersed in liquid, the liquid detection port outputs a high-level liquid immersion detection signal, the key input switch circuit is closed at the moment, and a user can send a key operation instruction through the key and the key input switch circuit so that the main controller outputs a corresponding control signal according to the key operation instruction, and control of a corresponding functional module in the wrist strap equipment is achieved, for example, audio signals are played, photographing, recording and the like.
When the wrist band device is immersed in liquid, the liquid detection port outputs a low-level liquid immersion detection signal, the key input switch circuit is turned off, the user cannot send a key operation instruction through the key and the key input switch circuit 10, and the wrist band device cannot receive the key operation instruction input by the user, so that the operation of the user cannot be responded according to the key operation instruction. Therefore, the wrist strap equipment can be prevented from being immersed into liquid, and the button is prevented from being triggered by mistake due to electric leakage.
In one embodiment, the immersion detecting method of the wristband apparatus further includes:
and when the immersion liquid detection signal is received, starting a swimming motion mode, and outputting a control signal according to a flow corresponding to the swimming mode.
In this embodiment, the wrist band device may be a sports watch, and the user needs to monitor and identify the swimming state while swimming, and needs to enter the swimming mode manually by the user, for example, through a button adjustment before the user enters the water. However, it may happen that the user forgets to adjust the swimming device or manually exits the swimming mode after the exercise is finished, which causes great inconvenience to the user. For this reason, the main controller of the present implementation may also determine that the user has entered water and needs to perform a movement when the dip detection signal is detected, thereby turning on the swimming mode and recording the user's swimming motion data, such as swimming distance, swimming time, stroke times, stored heart rate data, etc.
In an embodiment, the step of starting the swimming motion mode and outputting the control signal in a flow corresponding to the swimming mode when the immersion liquid detection signal is received specifically includes:
detecting a motion action of a user upon receiving the immersion detection signal;
outputting a motion detection signal when the motion of the user is detected;
and when the user is confirmed not to move within the first preset time according to the output motion detection signal, exiting the swimming motion mode.
When the wrist strap device is used, the wrist strap device may fall into water, or return to normal after a short-term water immersion phenomenon occurs due to rain or the like. The embodiment may further detect the state of the wrist band device through the acceleration sensor 30, and if the wrist band device does not move within the first preset time, it may be determined that the user does not need to perform swimming movement at this time, so that the swimming mode may be exited, and if it is detected that the wrist band device is not immersed in liquid at the same time, the button function may be resumed, otherwise, the operation of the button function is continuously stopped. And if the user moves within the first preset time, continuing to record swimming data during the movement.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A wristband apparatus, characterized by comprising:
the equipment main body comprises a shell and an electric control plate arranged in the shell;
a wrist strap connected to the apparatus main body through a connection mechanism;
the key is arranged on the wrist strap;
the key input switch circuit is arranged on the electric control board and is electrically connected with the keys;
a liquid detection port provided on the housing or the wristband, the liquid detection port being configured to output an immersion detection signal when immersion of liquid is detected;
and the main controller is arranged on the electric control board and is electrically connected with the liquid detection port, and the main controller is configured to control the key input switch circuit to be disconnected from the electrical connection with the keys when the immersion liquid detection signal is received.
2. The wristband device of claim 1, wherein the master controller is further configured to, upon receiving the dip detection signal, turn on a swimming motion mode and output a control signal in a flow corresponding to the swimming mode.
3. The wristband device according to claim 2, further comprising an acceleration sensor disposed within the housing and electrically connected to the master controller, the acceleration sensor configured to detect a motion action of a user and output a motion detection signal to the master controller upon detecting a user motion;
the main controller is also configured to exit the swimming motion mode when the user is confirmed not to move within a first preset time according to the motion detection signal output by the acceleration sensor.
4. The wristband apparatus according to claim 1, wherein said liquid detection port comprises two electrical conductors, the two electrical conductors being spaced apart on said housing or wristband, said two electrical conductors outputting said immersion detection signal when in conductive liquid communication;
the wrist strap equipment further comprises an immersion liquid detection circuit, the controlled end of the immersion liquid detection circuit is connected with the control end of the main controller, and the detection end of the immersion liquid detection circuit is electrically connected with the main controller and the common end of the electric conductor;
the main controller is also configured to output a detection control signal at a first preset period;
the immersion detection circuit is configured to detect a connection state between the two electrical conductors at the first preset period according to a detection control signal output by the main controller.
5. The wristband apparatus according to claim 4, wherein the immersion detection circuit comprises a first switching tube, a first pull-up resistor, a first voltage dividing resistor, a first electrostatic protection diode; the controlled end of the first switch tube is the controlled end of the immersion detection circuit, the input end of the first switch tube is connected with a pull-up power supply, the output end of the first switch tube is connected with the first end of the first pull-up resistor, and the second end of the first pull-up resistor is the detection end of the immersion detection circuit;
the input end of the first electrostatic protection diode is connected with one of the two conductors, and the output end of the first electrostatic protection diode and the other of the two conductors are grounded;
the first end of the first divider resistor is connected with the second end of the first pull-up resistor, and the second end of the first divider resistor is grounded.
6. The wristband device according to claim 1, wherein the key input switching circuit comprises a second switching tube, a second pull-up resistor and a second electrostatic protection diode; the controlled end of the second switch tube is connected with the control end of the main controller, the input end of the second switch tube is connected with one contact of the key, the output end of the second switch tube is interconnected with the first end of the second pull-up resistor and the key signal input end of the main controller, and the second end of the second pull-up resistor is connected with a pull-up power supply;
the input end of the second electrostatic protection diode is connected with one contact of the key, and the output end of the second electrostatic protection diode and the other contact of the key are both grounded;
the key input switch circuit further comprises a first capacitor, the first end of the first capacitor is connected with the input end of the second switch tube, and the second end of the first capacitor is grounded.
7. The wristband device according to any one of claims 1 to 6, wherein said keys are provided at an end of said wristband near said device body;
the wrist strap is further provided with a reinforcing rib, and the position of the reinforcing rib corresponds to the position of the key.
8. The immersion liquid detection method of the wrist strap equipment comprises a liquid detection port, an equipment main body, a wrist strap and keys arranged on the wrist strap, wherein the keys are arranged on a shell or the wrist strap; the immersion liquid detection method of the wrist strap equipment is characterized by comprising the following steps:
when the liquid detection port detects that liquid is immersed, an immersion liquid detection signal is output;
and when the immersion liquid detection signal is received, stopping accessing the key signal input by the key.
9. The liquid immersion detecting method of a wristband apparatus according to claim 8, further comprising:
and when the immersion liquid detection signal is received, starting a swimming motion mode, and outputting a control signal according to a flow corresponding to the swimming mode.
10. The method for detecting immersion liquid of a wristband apparatus according to claim 9, wherein the step of turning on a swimming motion mode upon receiving the immersion liquid detection signal and outputting a control signal in a flow corresponding to the swimming mode specifically includes:
detecting a motion action of a user upon receiving the immersion detection signal;
outputting a motion detection signal when the motion of the user is detected;
and when the user is confirmed not to move within the first preset time according to the output motion detection signal, exiting the swimming motion mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911423945.3A CN111109780A (en) | 2019-12-31 | 2019-12-31 | Wristband equipment and immersion liquid detection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911423945.3A CN111109780A (en) | 2019-12-31 | 2019-12-31 | Wristband equipment and immersion liquid detection method thereof |
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| CN111109780A true CN111109780A (en) | 2020-05-08 |
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| CN201911423945.3A Pending CN111109780A (en) | 2019-12-31 | 2019-12-31 | Wristband equipment and immersion liquid detection method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112515648A (en) * | 2020-12-18 | 2021-03-19 | 云镶医疗器械(云南)有限公司 | Wrist strap, electronic sphygmomanometer and vital sign monitor with connecting piece |
| CN112731833A (en) * | 2020-12-21 | 2021-04-30 | 歌尔光学科技有限公司 | Control method and device of electronic equipment, electronic equipment and storage medium |
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