CN117791792A - Charging seat, control method thereof and wireless temperature probe - Google Patents

Abstract

The invention discloses a charging seat, a control method thereof and a wireless temperature probe, wherein the charging seat comprises: the charging unit is used for outputting direct-current voltage; the first end of the switch unit is connected with the output end of the charging unit, and the second end of the switch unit is connected with the charging port of the wireless temperature probe; the first end of the control unit is connected with the third end of the switch unit, and the second end of the control unit is connected with the control end of the switch unit; the control unit is used for detecting the output current value of the charging unit and outputting a first control signal or a second control signal to the control end of the switching unit according to the current value to control the switching unit to work. According to the wireless temperature probe, the charging port is selected by the switch unit to be connected with the charging unit or connected with the control unit, a circuit between the switch unit and the charging port is multiplexed, initial electric quantity information of the wireless temperature probe is obtained, and then the electric quantity information, the service time and the required charging time are obtained according to the related information and then transmitted to the user equipment, so that a user can conveniently learn the related information.

Description

Charging seat, control method thereof and wireless temperature probe

Technical Field

The invention relates to the technical field of food probes, in particular to a charging seat, a control method thereof and a wireless temperature probe.

Background

The food probe can monitor the temperature inside the food, calculate how long the temperature lasts, and even tell you what temperature is most suitable for eating. For example, the use of a meat thermometer can visually indicate whether the meat has not yet cooked, or whether there is a risk of the meat becoming overcooked. The presence of a wireless/smart food probe is to more conveniently display the temperature. And the display or long cable of the traditional food thermometer is eliminated, and the food thermometer can be directly placed on a heating chamber (such as a gridiron, an oven and the like) or a heat source to monitor the temperature in real time, so that the uninterrupted and integral cooking process is realized.

However, wireless temperature probes are limited in volume, so that battery capacity is generally small; no corresponding charge management chip exists in the market; typically, a fixed voltage is charged directly. The user cannot know the electric quantity, the service time and whether the wireless temperature probe is fully charged or not; the existing charging mode brings inconvenience to the use of users.

Disclosure of Invention

The invention proposes a charging stand comprising:

the charging unit is used for rectifying the accessed commercial power and then outputting direct-current voltage;

the first end of the switch unit is connected with the output end of the charging unit, and the second end of the switch unit is used for being connected with the charging port of the wireless temperature probe;

The first end of the control unit is connected with the third end of the switch unit, and the second end of the control unit is connected with the control end of the switch unit; the control unit is used for detecting the output current value of the charging unit and outputting a first control signal or a second control signal to the control end of the switching unit according to the current value so as to control the switching unit to work;

wherein the switch unit turns on a path between the charging unit and the charging port and turns off a path between the first end of the control unit and the charging port when receiving a first control signal; the switch unit is used for switching on a passage between the first end of the control unit and the charging port and switching off the passage between the charging unit and the charging port when receiving a second control signal;

the control unit is further used for communicating with the wireless temperature probe when the switch unit is used for conducting a passage between the charging port and the first end of the control unit, so as to obtain electric quantity information of the wireless temperature probe, and according to the electric quantity information, the charging time and the output current value of the charging unit, obtain the service time of the wireless temperature probe, the electric quantity information at the current moment and the charging time required by the wireless temperature probe; the control unit transmits the use time and the power information to the user equipment by establishing wireless communication with the user equipment.

Optionally, the switching unit includes:

the first end of the first switch is connected with the output end of the charging unit, the second end of the first switch is connected with the charging port, and the control end of the first switch is connected with the second end of the control unit; the first switch is used for switching on a passage between the charging unit and the charging port when receiving the first control signal and switching off the passage between the charging unit and the charging port when receiving the second control signal;

the first end of the second switch is connected with the first end of the control unit, the second end of the second switch is connected with the charging port, and the control end of the second switch is connected with the second end of the control unit; the second switch is used for switching on a passage between the first end of the control unit and the charging port when the second control signal is received and switching off the passage between the first end of the control unit and the charging port when the first control signal is received.

Optionally, the control unit includes:

a current detection circuit for outputting the current value after detecting the output current value of the charging unit;

the wireless transmission module is used for carrying out wireless communication with the user equipment;

The main control circuit is connected with the output end of the current detection circuit and is used for outputting a first control signal or a second control signal to the control end of the control unit according to the current value; the first end of the main control circuit is connected with the third end of the switch unit; the main control circuit is also connected with the wireless parameter module and is in wireless communication with the user equipment through the wireless transmission module.

The invention also provides a charging seat control method, which is applied to the charging seat and comprises the following steps:

the communication loop is conducted, and a charging request is sent to the wireless temperature probe;

after the initial electric quantity information of the wireless temperature probe is obtained, the communication loop is turned off, and the charging loop is turned on to provide charging voltage for the wireless temperature probe;

detecting charging current, and obtaining the electric quantity, the service time and the charging time of the wireless temperature probe according to the charging current, the charging time and the initial electric quantity information;

establishing wireless communication with user equipment, and transmitting the electric quantity and the use time to the user equipment;

comparing the charging current with a first preset current value and a second preset current value, and obtaining the charging state of the wireless temperature probe according to the comparison result.

Optionally, the step of comparing the charging current with a first predetermined current value and a second predetermined current value, and obtaining the working state of the wireless temperature probe according to the comparison result specifically includes:

when the value of the charging current is smaller than the first preset current value, judging that the wireless temperature probe is in a state of being separated from a charging seat;

when the value of the charging current is larger than the first preset current value and smaller than the second preset current value, judging that the wireless temperature probe is in a fully charged state;

and when the charging current is larger than the second preset current value, judging that the wireless temperature probe is in a charging state.

Optionally, the step of comparing the charging current with a first predetermined current value and a second predetermined current value, and obtaining the working state of the wireless temperature probe according to the comparison result specifically includes:

when the value of the charging current is smaller than the first preset current value, judging that the wireless temperature probe is in a state of being separated from a charging seat;

when the value of the charging current is larger than the first preset current value and smaller than the second preset current value, judging that the wireless temperature probe is in a fully charged state;

And when the charging current is larger than the second preset current value, judging that the wireless temperature probe is in a charging state.

Optionally, after the step of comparing the charging current with the first predetermined current value and the second predetermined current value and obtaining the charging state of the wireless temperature probe according to the comparison result, the method includes:

when the wireless temperature probe is in a state of being separated from the charging seat, the charging loop is turned off, and the communication loop is turned on to send a charging request to the wireless temperature probe.

The invention also proposes a wireless temperature probe comprising:

the charging port is used for accessing direct-current voltage;

a battery;

the first end of the switch circuit is connected with the charging port, and the second end of the switch circuit is connected with the output end of the battery;

the first end of the control circuit is connected with the control end of the switch circuit, the second end of the control circuit is connected with the output end of the battery, and the third end of the control circuit is connected with the third end of the switch circuit; the control circuit is used for controlling the switching circuit to work so that the switching circuit conducts the paths of the battery and the charging port and cuts off the paths of the charging port and the third end of the control circuit.

Optionally, the wireless temperature probe further comprises:

and the wireless transmission device is connected with the control circuit and used for establishing wireless communication with the user equipment.

Optionally, the switching circuit includes:

the first end of the load switch is connected with the charging port, the second end of the load switch is connected with the battery, and the controlled end of the load switch is connected with the first end of the control circuit; the load switch is used for switching on a passage between the battery and the charging port when in operation;

the first end of the analog switch is connected with the charging port, the second end of the analog switch is connected with the third end of the control circuit, and the controlled end of the analog switch is connected with the first end of the control circuit; the analog switch is used for disconnecting a passage between the charging port and the control circuit when in operation.

The invention proposes a charging stand comprising: the charging unit is used for rectifying the accessed commercial power and then outputting direct-current voltage; the first end of the switch unit is connected with the output end of the charging unit, and the second end of the switch unit is used for being connected with the charging port of the wireless temperature probe; the first end of the control unit is connected with the third end of the switch unit, and the second end of the control unit is connected with the control end of the switch unit; the control unit is used for detecting the output current value of the charging unit and outputting a first control signal or a second control signal to the control end of the switching unit according to the current value so as to control the switching unit to work; wherein the switch unit turns on a path between the charging unit and the charging port and turns off a path between the first end of the control unit and the charging port when receiving a first control signal; the switch unit is used for switching on a passage between the first end of the control unit and the charging port and switching off the passage between the charging unit and the charging port when receiving a second control signal; the control unit is further used for communicating with the wireless temperature probe when the switch unit is used for conducting a passage between the charging port and the first end of the control unit, so as to obtain electric quantity information of the wireless temperature probe, and according to the electric quantity information, the charging time and the output current value of the charging unit, obtain the service time of the wireless temperature probe, the electric quantity information at the current moment and the charging time required by the wireless temperature probe; the control unit transmits the use time and the power information to the user equipment by establishing wireless communication with the user equipment. According to the wireless temperature probe charging device, the charging unit is switched to be connected with the charging port by the control switch unit or the control unit is switched to be connected with the charging port, so that a circuit between the switch unit and the charging port is multiplexed, the charging seat can communicate with the wireless temperature probe before being charged to obtain initial electric quantity information, and then the electric quantity information, the service time and the required charging time of the wireless temperature probe are obtained according to the charging time and the charging current. And the control unit transmits the using time and the electric quantity information to the user equipment through wireless connection so that the user can know the related information.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a charging stand according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of another embodiment of a charging stand according to the present invention;

FIG. 3 is a schematic view of a charging stand according to another embodiment of the present invention;

FIG. 4 is a flowchart illustrating an embodiment of a method for controlling a cradle according to the present invention;

FIG. 5 is a flowchart illustrating a method for controlling a cradle according to another embodiment of the present invention;

FIG. 6 is a flowchart illustrating a method for controlling a cradle according to another embodiment of the present invention;

FIG. 7 is a schematic diagram of a wireless temperature probe according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of another embodiment of the wireless temperature probe of the present invention.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				10	Charging stand	20	Wireless temperature probe
110	Charging unit	210	Charging port
				120	Switch unit	220	Battery cell
130	Control unit	230	Switching circuit
				1210	First switch	240	Control circuit
1220	Second switch	250	Wireless transmission device
				1310	Current detection circuit	2310	Load switch
1320	Wireless transmission module	2320	Analog switch
				1330	Main control circuit

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

It should be noted that the wireless temperature probe 20 cannot be made thick because it needs to be conveniently inserted into food, and the wireless temperature probe 20 cannot be made long because the portion inserted into meat is limited in order to ensure that the wireless temperature probe 20 can be stably inserted. The above two reasons limit the limited volume of the battery 220 of the wireless temperature probe 20 and the small capacity of the battery 220; for such small capacity batteries 220, there is no corresponding charge management chip on the market. Typically, a fixed voltage is charged directly. The existing wireless temperature probe 20 sleeps the control chip when detecting the access voltage of the charging interface, so as to prevent the battery 220 from being charged incompletely; or the charging voltage damages the control chip. The control chip of the wireless temperature probe 20 does not re-operate until the user removes it from the cradle 10. In the charging process of the wireless temperature probe 20, a user cannot know information related to the electric quantity, the use time, the residual charging time and the like of the wireless temperature probe 20, which brings inconvenience to the user.

Referring to fig. 1, the present invention proposes a charging stand 10, the charging stand 10 comprising:

the charging unit 110 is configured to rectify the connected mains supply and output a dc voltage;

The first end of the switch unit 120 is connected with the output end of the charging unit 110, and the second end is used for being connected to the charging port 210 of the wireless temperature probe 20;

the first end of the control unit 130 is connected with the third end of the switch unit 120, and the second end of the control unit 130 is connected with the control end of the switch unit 120; the control unit 130 is configured to detect an output current value of the charging unit 110, and output a first control signal or a second control signal to a control end of the switching unit 120 according to the current value, so as to control the switching unit 120 to work;

wherein, the switching unit 120, upon receiving a first control signal, turns on a path between the charging unit 110 and the charging port 210 and turns off a path between the first end of the control unit 130 and the charging port 210; the switching unit 120, upon receiving a second control signal, turns on a path between the first end of the control unit 130 and the charging port 210 and turns off a path between the charging unit 110 and the charging port 210;

the control unit 130 is further configured to communicate with the wireless temperature probe 20 when the switch unit 120 turns on the path between the charging port 210 and the first end of the control unit 130, so as to obtain the electrical quantity information of the wireless temperature probe 20, and obtain the usage time of the wireless temperature probe 20, the electrical quantity information at the current moment, and the charging time required by the wireless temperature probe 20 according to the electrical quantity information, the charging time, and the output current value of the charging unit 110; the control unit 130 transmits the usage time and the power information to the user equipment by establishing wireless communication with the user equipment.

The cradle 10 includes a charging unit 110, a switching unit 120, and a control unit 130. Wherein the charging unit 110 is configured to provide a dc voltage that can charge the wireless temperature probe 20; the switch unit 120 is respectively connected with the charging unit 110, the control unit 130 and the charging port 210 of the wireless temperature probe 20, and is used for switching off or switching on a passage between the charging unit 110, the control unit 130 and the wireless temperature probe 20; the control unit 130 is configured to control the switch unit 120 to work so as to change the conduction condition between the three; the control unit 130 is further configured to communicate with the wireless temperature probe 20 when the control unit is in communication with the path of the charging port 210, so as to obtain current power information of the wireless temperature probe 20. Therefore, the charging stand 10 multiplexes the circuit between the switch unit 120 and the charging port 210 of the wireless temperature probe 20; the control unit 130 is firstly used to communicate with the wireless temperature probe 20 through the connection of the control unit 130 and the charging port 210, so as to obtain the current electric quantity information of the wireless temperature probe 20; the control unit 130 then controls the switching unit 120 to switch off the path between the control unit 130 and the charging port 210, i.e. to switch off the communication loop of the control unit 130 and the wireless temperature probe 20. In addition, the switching unit 120 is controlled to conduct a charging loop between the charging unit 110 and the charging port 210. At this time, the direct current outputted from the charging unit 110 can charge the wireless temperature probe 20. The third terminal of the control unit 130 is connected to the output terminal of the charging unit 110, and is configured to detect an output current value of the charging unit 110.

It will be readily appreciated that the wireless temperature probe 20 is powered using a battery 220, and is based on the principle of charging the battery 220; the charging current of battery 220 when fully charged is much less than the charging current of battery 220 when charged but not fully charged; the battery 220 is connected in series with the charging unit 110 at the time of charging, and the value of the charging current of the battery 220 is equal to the value of the output current of the charging unit 110. The control unit 130 can also obtain the charge state of the wireless temperature probe 20, i.e., whether it is fully charged, by detecting the discharge current of the charging unit 110. In addition, when the charging unit 110 is disconnected from the charging circuit of the wireless temperature probe 20, the wireless temperature probe 20 stops charging, and the charging current of the battery 220 of the wireless temperature probe 20 is zero; the discharge current of the charging unit 110 is close to zero. For example: the switching unit 120 disconnects the charging circuit of the charging unit 110 and the wireless temperature probe 20 or the wireless temperature probe 20 is disconnected from the cradle 10. In an embodiment of the present invention, a first predetermined current value and a second predetermined current value may be set; the first predetermined current value corresponds to an output current value of the charging unit 110 when the charging circuit is disconnected, and the second predetermined current value corresponds to an output current value of the charging unit 110 when the battery 220 is fully charged; the first predetermined current value and the second predetermined circuit value may be obtained by a developer according to experiments, respectively. It is readily understood that the first predetermined current value is smaller than the second predetermined current value. After detecting the output current value of the charging unit 110, the control unit 130 may determine the current value. When the output current value of the charging unit 110 is less than or equal to the first predetermined current value, it may be judged that the wireless temperature probe 20 has stopped charging; when the output current value of the charging unit 110 is less than or equal to the second predetermined current value and greater than the first predetermined current value, it may be judged that the wireless temperature probe 20 is fully charged; when the output current value of the charging unit 110 is greater than the second predetermined current value, it may be determined that the wireless temperature probe 20 is being charged and is not fully charged.

The control circuit 240 obtains the charging state of the wireless temperature probe 20 according to the comparison of the output current value of the charging unit 110 with the first predetermined current value and the second predetermined current value. When the wireless temperature probe 20 is in a stopped state of charge, the control unit 130 outputs a second control signal to the control terminal of the switching unit 120, shutting off the path between the charging unit 110 and the charging port 210 and turning on the path between the first terminal of the control unit 130 and the charging port 210; i.e. closing the charging loop and turning on the communication loop. The control unit 130 sends a charging request to the wireless temperature probe 20 through a communication loop, waits for the wireless temperature probe 20 to be contacted with the charging stand 10 again, and replies electric quantity information and the preset charging time to the control unit 130. It should be understood that the control unit 130 may charge after a first time period is agreed with the wireless temperature probe 20, and before the first time period, the wireless temperature probe 20 turns on the path between the charging port 210 and the battery 220 thereof, and closes the loop between the charging port 210 and the control chip. The control unit 130 outputs a first control signal to the switch unit 120 after a predetermined first time, so that the switch unit 120 turns on a path between the charging port 210 and the charging unit 110 and turns off a path between the first end of the control unit 130 and the charging port 210; the cradle 10 begins to charge the wireless temperature probe 20.

The control unit 130 is further configured to communicate with the wireless temperature probe 20 when the communication loop is turned on, so as to obtain electrical quantity information of the wireless temperature probe 20. It is easy to understand that the control unit 130 also samples the output current of the charging unit 110, and the amount of electricity when the wireless temperature probe 20 is charged can be obtained by integrating the present amount of electricity information and the sampled output current over time, that is, bat_vol_2=bat_vol_1+_l I (t) dt. The bat_vol_2 is the electric quantity of the wireless temperature probe 20 at the current time, the bat_vol_1 is the electric quantity information of the wireless temperature probe 20, the I (t) is the current starting to charge to the current time, and the t I (t) dt is the integral of the current starting to charge to the current time over time. The time required for the battery 220 of the wireless temperature probe 20 to be full and the service time of the wireless temperature probe 20 can be obtained by looking up the charge-discharge curve of the battery 220 and the electric quantity. The charge and discharge curves of the battery 220 may be determined by a developer. The time of use may be obtained by dividing the electrical value of the wireless temperature probe 20 by the average operating current value. The control unit 130 includes a wireless communication device, establishes wireless communication with the user equipment, and transmits the usage time of the wireless temperature probe 20, the required time for the battery 220 to be filled, and the current power information to the user equipment through wireless communication. In an embodiment of the present invention, the wireless communication device may include: bluetooth module, wiFi module, star flash module and zigBee module etc..

In an embodiment of the present invention, the charging unit 110 may include a rectifying circuit, a filtering circuit, a transformer, and the like, for converting, rectifying, and filtering the connected mains power and outputting the converted power. The switching unit 120 may include: relays, single pole double throw switches, and switching tubes, etc. Wherein, the movable contact of the relay is connected with the charging port 210, the coil is connected with the second end of the control unit 130, the first stationary contact is connected with the third end of the charging unit 110, and the second stationary contact is connected with the first end of the control unit 130. The switching tube may include a first switch 1210 tube and a second switch 1220 tube, where the first switch 1210 tube is disposed between the charging unit 110 and the charging port 210, and is configured to be turned on when receiving a first control signal and turned off when receiving a second control signal. The second switch 1220 may be disposed in a path between the first end of the control unit 130 and the charging port 210, and is turned off when the first control signal is received, and turned on when the second control signal is received. The control unit 130 may include a controller, which may include: MCU, DSP (Digital Signal Process, digital Signal processing Chip), FPGA (Field Programmable Gate Array, programmable Gate array Chip), PLC, SOC (System On Chip), etc. The first control signal and the second control signal are associated with switching devices of the switching unit 120. In an embodiment of the present invention, the first control signal may be at a low level, and the second control signal may be at a high level.

The present invention proposes a charging stand 10, said charging stand 10 comprising: the charging unit 110 is configured to rectify the connected mains supply and output a dc voltage; the first end of the switch unit 120 is connected with the output end of the charging unit 110, and the second end is used for being connected to the charging port 210 of the wireless temperature probe 20; the first end of the control unit 130 is connected with the third end of the switch unit 120, and the second end of the control unit 130 is connected with the control end of the switch unit 120; the control unit 130 is configured to detect an output current value of the charging unit 110, and output a first control signal or a second control signal to a control end of the switching unit 120 according to the current value, so as to control the switching unit 120 to work; wherein, the switching unit 120, upon receiving a first control signal, turns on a path between the charging unit 110 and the charging port 210 and turns off a path between the first end of the control unit 130 and the charging port 210; the switching unit 120, upon receiving a second control signal, turns on a path between the first end of the control unit 130 and the charging port 210 and turns off a path between the charging unit 110 and the charging port 210; the control unit 130 is further configured to communicate with the wireless temperature probe 20 when the switch unit 120 turns on the path between the charging port 210 and the first end of the control unit 130, so as to obtain the electrical quantity information of the wireless temperature probe 20, and obtain the usage time of the wireless temperature probe 20, the electrical quantity information at the current moment, and the charging time required by the wireless temperature probe 20 according to the electrical quantity information, the charging time, and the output current value of the charging unit 110; the control unit 130 transmits the usage time and the power information to the user equipment by establishing wireless communication with the user equipment. The present invention switches the connection between the charging unit 110 and the charging port 210 or the connection between the switching unit 130 and the charging port 210 by controlling the switching unit 120, thereby multiplexing the circuits between the switching unit 120 and the charging port 210, so that the charging stand 10 can communicate with the wireless temperature probe 20 before charging to obtain initial electric quantity information, and then obtain the electric quantity information, the service time and the required charging time of the wireless temperature probe 20 according to the charging time and the charging current. The control unit 130 then transmits the usage time and the power information to the user equipment through a wireless connection, so that the user can learn about the relevant information.

Referring to fig. 2, in an embodiment of the present invention, the switching unit 120 includes:

a first switch 1210, a first end of the first switch 1210 is connected to the output end of the charging unit 110, a second end of the first switch 1210 is connected to the charging port 210, and a control end of the first switch is connected to the second end of the control unit 130; the first switch 1210 is configured to switch on a path between the charging unit 110 and the charging port 210 when the first control signal is received and switch off a path between the charging unit 110 and the charging port 210 when a second control signal is received;

a second switch 1220, wherein a first end of the second switch 1220 is connected to the first end of the control unit 130, a second end is connected to the charging port 210, and a control end is connected to the second end of the control unit 130; the second switch 1220 is configured to switch on a path between the first end of the control unit 130 and the charging port 210 when the second control signal is received and to switch off a path between the first end of the control unit 130 and the charging port 210 when the first control signal is received.

In this embodiment, the switching unit 120 includes a first switch 1210 and a second switch 1220. The first switch 1210 may include a MOS transistor, a triode, an IGBT transistor, a thyristor, or the like, and the second switch 1220 may include a MOS transistor, a triode, an IGBT transistor, a thyristor, or the like. In an embodiment of the present invention, the first switch 1210 includes a first MOS transistor, where the first MOS transistor includes a PMOS transistor, and is turned on at a low level and turned off at a high level; the second switch 1220 includes a second MOS transistor, which is an NMOS transistor, and is turned on at a high level and turned off at a low level. In this embodiment, the first control signal may be at a low level, and the second control signal may be at a high level; the first MOS transistor is configured to switch on a path between the charging unit 110 and the charging port 210 when receiving a low level, and switch off a path between the charging unit 110 and the charging port 210 when receiving a high level. The second MOS transistor is configured to shut off a path between the first end of the control unit 130 and the charging port 210 when receiving a low level, and to shut on a path between the first end of the control unit 130 and the charging port 210 when receiving a high level. It should be noted that, in this embodiment, the first switch 1210 includes a PMOS transistor, the second switch 1220 includes an NMOS transistor, which does not mean that only such a matching manner exists, and in other embodiments, the first switch 1210 may include a PNP transistor, and the second switch 1220 may include an NPN transistor.

Referring to fig. 3, in an embodiment of the present invention, the control unit 130 includes:

a current detection circuit 1310 for outputting the current value after detecting the output current value of the charging unit 110;

a wireless transmission module 1320 for wireless communication with a user equipment;

a main control circuit 1330, where the main control circuit 1330 is connected to the output end of the current detection circuit 1310 and is configured to output a first control signal or a second control signal to the control end of the control unit 130 according to the current value; a first end of the main control circuit 1330 is connected to a third end of the switch unit 120; the master control circuit 1330 is further connected to the wireless parameter module, and wirelessly communicates with the user equipment through the wireless transmission module 1320.

In this embodiment, the current detection current is used to detect the output current value of the charging unit 110 and then output the current value to the main control circuit 1330; in an embodiment of the present invention, the circuit detection circuit may include a sampling resistor and an operational amplifier, where the sampling resistor is disposed in an electrical loop between the charging unit 110 and the switching unit 120, and the operational amplifier amplifies a voltage on the sampling resistor and outputs the amplified voltage to the main control circuit 1330; the current detection circuit 1310 may include an analog-to-digital conversion circuit, and is configured to convert the voltage output by the operational amplifier into a digital value and output the digital value. In another embodiment of the present invention, the current detection circuit 1310 includes a current transformer. The wireless transmission module 1320 is configured to wirelessly communicate with a user equipment; the wireless transmission module 1320 may include a bluetooth module, a WiFi module, a star flash module, a ZigBee module, and the like. The user device may be an electronic device comprising a corresponding module; for example: when the wireless transmission module 1320 includes a bluetooth module or a WiFi module, the user equipment also needs to include a bluetooth module or a WiFi module. The user equipment may be a mobile phone, a computer, an IPAD or a smart watch, etc. The master circuit 1330 may include: MCU, DSP (Digital Signal Process, digital Signal processing Chip), FPGA (Field Programmable Gate Array, programmable Gate array Chip), PLC, SOC (System On Chip), etc. It should be noted that, the main control circuit 1330 includes a control chip, and the control chip may be connected to the current detection circuit 1310, the wireless transmission module 1320, and the switch circuit 230 by using GPIO ports.

The main control circuit 1330 may communicate with the wireless temperature probe 20 to obtain initial power information, and then obtain power information, usage time and required charging time of the wireless temperature probe 20 according to the charging time and charging current. The main control circuit 1330 transmits the usage time and the power information to the ue through the wireless transmission module 1320 wirelessly connected to the ue, so that the user can learn about the related information.

The present invention also proposes a charging stand control method, which is applied to the charging stand 10, and includes:

s100, a communication loop is conducted, and a charging request is sent to the wireless temperature probe 20;

s200, after the initial electric quantity information of the wireless temperature probe 20 is obtained, the communication loop is turned off, and the charging loop is turned on to provide charging voltage for the wireless temperature probe 20;

s300, detecting charging current, and obtaining the electric quantity, the service time and the charging time of the wireless temperature probe 20 according to the charging current, the charging time and the initial electric quantity information;

s400, establishing wireless communication with user equipment, and transmitting the electric quantity and the using time to the user equipment;

S500, comparing the charging current with a first preset current value and a second preset current value, and obtaining the charging state of the wireless temperature probe 20 according to the comparison result.

It should be understood that the charging stand 10 charges the wireless temperature probe 20, and there are two connection relations between the charging stand 10 and the wireless temperature probe 20, that is, the wireless temperature probe 20 is separated from the charging stand 10, and that the wireless temperature probe 20 is connected to the charging stand 10. The charging stand 10 needs to obtain the electric quantity of the wireless temperature probe 20 before charging the wireless temperature probe 20, and combines the integration of the charging current with time to obtain the electric quantity of the wireless temperature probe 20 at a certain moment after charging. When the wireless temperature probe 20 is separated from the charging stand 10, the charging stand 10 conducts a communication loop to send a charging request until the wireless temperature probe 20 is connected with the charging stand 10, and responds to the charging request when the charging request is received. The wireless temperature probe 20 outputs initial power information to the charging stand 10 when responding to the request; after obtaining the initial power information of the wireless temperature probe 20, the charging stand 10 determines that the wireless temperature probe 20 is connected to the charging stand 10, at this time, the communication loop is closed, the charging loop is turned on, and charging is started by providing charging voltage for the wireless temperature probe 20.

Because the charging stand 10 charges the wireless temperature probe 20, the current output by the charging stand 10 is the charging current of the wireless temperature probe 20; the charging stand 10 may obtain the charging current by detecting the output current. And obtaining the electric quantity of the wireless temperature probe 20 at the current moment according to the charging current, the charging time and the initial electric quantity information; and the time required for charging the wireless temperature probe 20 to full charge and the service time of the wireless temperature probe 20 are obtained by looking up the charge-discharge curve of the battery 220 and the electric quantity.

The cradle 10 establishes wireless communication with the user device, which may be WiFi communication or bluetooth communication, etc. The cradle 10 transmits the power amount, the time required for charging, and the use time to the user equipment in real time through wireless communication. So that the user knows the amount of power and the time that the wireless temperature probe 20 can be used and the waiting time for the wireless temperature probe 20 to be fully charged through the user equipment.

The charging stand 10 also determines the charging state of the wireless temperature probe 20 by detecting the charging current, for example: whether charged and whether fully charged. Since the wireless temperature probe 20 is powered using the battery 220; when the battery 220 is not charged, the charging current is zero; the battery 220 has a small charging current when fully charged; the first predetermined current and the second predetermined current may be set and the state of charge of the wireless temperature probe 20 may be determined based on the charging current, the first predetermined current, and the second predetermined current. The first predetermined current and the second predetermined current may be referred to the above-described embodiments.

After the specific state of the wireless temperature probe 20 in the three states of stopping charging, being charging and having been fully charged is obtained, the cradle 10 turns off/on the communication circuit and turns off/on the charging circuit according to the charging state. When the wireless temperature probe 20 is in a stopped state of charge, the wireless temperature probe 20 may be disconnected from the cradle 10, or the wireless temperature probe 20 may be disconnected from the charging circuit of the cradle 10; at this time, the charging stand 10 disconnects the charging loop and turns on the communication loop, so that the wireless temperature probe 20 receives a charging request when it is connected to the charging stand 10.

In an embodiment of the present invention, after obtaining the test power information of the wireless temperature probe 20, the step of turning off the communication loop and turning on the charging loop to provide the charging voltage for the wireless temperature probe 20 specifically includes:

s210, receiving initial electricity quantity information of the wireless temperature probe 20 and appointing charging time;

s220, the communication loop is turned off, the charging loop is turned on, and a charging voltage is provided for the wireless temperature probe 20 in a scheduled charging time.

In this embodiment, the charging stand 10 receives the initial power information of the wireless temperature probe 20 and agrees with the charging time of the wireless temperature probe 20; the charging stand 10 and the wireless temperature probe 20 can be used to agree with the charging time according to the above embodiment. It should be noted that the wireless temperature probe 20 may output a first time to the charging stand 10, so as to charge the wireless temperature probe 20 by the charging stand 10 at a first time corresponding to the first time; the charging stand 10 and the wireless temperature probe 20 can accurately know the first moment corresponding to the first time through a timer. The wireless temperature probe 20 conducts the path between the charging port 210 and the battery 220 before the first time.

After the charging stand 10 and the wireless temperature probe 20 have a predetermined charging time, the communication circuit is turned off, i.e. the path between the first end of the control unit 130 and the charging port 210 is turned off; the charging loop, i.e. the path between the charging unit 110 and the charging port 210, is conducted. The cradle 10 provides a charging voltage to the wireless temperature probe 20 at a prescribed charging time.

In an embodiment of the present invention, the step of comparing the charging current with a first predetermined current value and a second predetermined current value, and obtaining the working state of the wireless temperature probe 20 according to the comparison result specifically includes:

s510, when the value of the charging current is smaller than the first preset current value, judging that the wireless temperature probe 20 is in a state of being separated from the charging seat 10;

s520, when the value of the charging current is larger than the first preset current value and smaller than the second preset current value, judging that the wireless temperature probe 20 is in a fully charged state;

and S530, when the charging current is larger than the second preset current value, judging that the wireless temperature probe 20 is in a charging state.

In this embodiment, the first predetermined current and the second predetermined current may refer to the above-described embodiments. Since the first predetermined current is used to determine whether the wireless temperature probe 20 is charged, and the wireless temperature probe 20 is stopped from being charged due to the detachment of the cradle 10 in most cases, it is possible to determine that the wireless temperature probe 20 is in the detachment state of the cradle 10 when the value of the charging current is smaller than the value of the first predetermined current.

Since the charging current of the battery 220 in the case of normal charging is greater than the charging current in the case of full charging, a second predetermined current is set, and when the value of the charging current is greater than the value of the first predetermined current and is smaller than the value of the second predetermined current, it is determined that the wireless temperature probe 20 is in a fully charged state; when the charging current is greater than the second predetermined current, it is determined that the wireless temperature probe 20 is in a state of being charged.

In an embodiment of the present invention, after the step of comparing the charging current with the first predetermined current value and the second predetermined current value and obtaining the charging state of the wireless temperature probe 20 according to the comparison result, the method includes:

s600, when the wireless temperature probe 20 is in a state of being separated from the charging seat 10, the charging loop is turned off, and the communication loop is turned on to send a charging request to the wireless temperature probe 20.

Referring to fig. 4, the present invention also proposes a wireless temperature probe 20, the wireless temperature probe 20 comprising:

a charging port 210 for switching in a dc voltage;

a battery 220;

a switch circuit 230, wherein a first end of the switch circuit 230 is connected to the charging port 210, and a second end is connected to an output end of the battery 220;

A control circuit 240, wherein a first end of the control circuit 240 is connected to a control end of the switch circuit 230, a second end is connected to an output end of the battery 220, and a third end is connected to a third end of the switch circuit 230; the control circuit 240 is configured to control the switch circuit 230 to operate, so that the switch circuit 230 turns on the path between the battery 220 and the charging port 210 and turns off the path between the charging port 210 and the third terminal of the control circuit 240.

The cradle 10 supplies power to the wireless temperature probe 20 and communicates with the wireless temperature probe 20 by multiplexing the path between the switching unit 120 and the charging port 210; correspondingly, the wireless temperature probe 20 multiplexes the path between the charging port 210 and the switching circuit 230. When the wireless temperature probe 20 is not charged, or when the wireless temperature probe is in operation, the control circuit 240 controls the switch circuit 230 to operate, so that the switch circuit 230 conducts a path between the charging port 210 and the control circuit 240; the control circuit 240 is capable of receiving a charge request from the cradle 10. The control circuit 240 transmits the detected electric quantity of the battery 220 to the charging stand 10 after receiving the charging request of the charging stand 10, and agrees with the charging stand 10 for charging time; the control circuit 240 controls the switching circuit 230 to turn on the path between the battery 220 and the charging port 210 and to turn off the path between the charging port 210 and the third terminal of the control circuit 240 before the agreed charging time, so as to avoid the charging voltage of the cradle 10 from damaging the control devices in the control circuit 240.

The control circuit 240 may include an MCU, a DSP (Digital Signal Process, digital signal processing Chip), an FPGA (Field Programmable Gate Array, programmable gate array Chip), an SOC (System On Chip), and the like. The battery 220 may be a lithium battery 220 or a sodium battery 220, etc. The switching circuit 230 may include a relay or a single pole switch, etc.

In one embodiment of the present invention, the wireless temperature probe 20 further comprises:

a wireless transmission means 250, said wireless transmission means 250 being connected to said control circuit 240 and being arranged to establish wireless communication with a user equipment.

In this embodiment, after the temperature sensor detects the temperature of the object to be measured during operation of the wireless temperature probe 20, the wireless transmission device 250 is used to wirelessly transmit the temperature detected by the temperature sensor to the user equipment.

The wireless transmission device 250 may be a bluetooth module, a WiFi module, a ZigBee module, a star flash module, or the like. The temperature sensor may be a thermistor or thermocouple, etc.

In one embodiment of the present invention, the switching circuit 230 includes:

a load switch 2310, wherein a first end of the load switch 2310 is connected to the charging port 210, a second end is connected to the battery 220, and a controlled end is connected to a first end of the control circuit 240; the load switch 2310 is used to switch on a path between the battery 220 and the charging port 210 when in operation;

An analog switch 2320, a first end of the analog switch 2320 is connected with the charging port 210, a second end is connected with a third end of the control circuit 240, and a controlled end is connected with a first end of the control circuit 240; the analog switch 2320 is configured to disconnect the path between the charging port 210 and the control circuit 240 during operation.

In this embodiment, it should be noted that, when the wireless temperature probe 20 is in the initial state, the charging port 210 is in communication with the control circuit 240, so as to receive a charging request from the charging stand 10; after receiving the charging request, the wireless temperature probe 20 controls the switch circuit 230 to operate so as to conduct the path between the battery 220 and the charging port 210 and to shut off the path between the charging port 210 and the third terminal of the control circuit 240, so as to prepare for charging. Wherein the load switch 2310 is used to switch on a path between the battery 220 and the charging port 210 when in operation; the analog switch 2320 is configured to disconnect the path between the charging port 210 and the control circuit 240 during operation. The load switch 2310 may include a relay or a switching tube, etc., and the analog switch 2320 may include a relay or a switching tube, etc. In one embodiment of the present invention, the load switch 2310 includes a first relay, a stationary contact of the first relay is connected to the charging port 210, a movable contact is connected to the battery 220, and a coil is connected to a first end of the control circuit 240; the analog switch 2320 includes a second relay, a stationary contact of the second relay is connected to the charging port 210, a second end is connected to the third end of the control circuit 240, and a coil is connected to the first end of the control circuit 240. The movable contact and the fixed contact of the first relay are movable and contact points, and the movable contact and the fixed contact of the second relay are movable opening contact points.

When the control circuit 240 stops controlling the load switch 2310 and the analog switch 2320, the load switch 2310 opens the path between the battery 220 and the charging port 210, and the analog switch 2320 closes the path between the charging port 210 and the control circuit 240.

The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (10)

1. A charging stand, characterized in that the charging stand comprises:

the charging unit is used for rectifying the accessed commercial power and then outputting direct-current voltage;

the first end of the switch unit is connected with the output end of the charging unit, and the second end of the switch unit is used for being connected with the charging port of the wireless temperature probe;

the first end of the control unit is connected with the third end of the switch unit, and the second end of the control unit is connected with the control end of the switch unit; the control unit is used for detecting the output current value of the charging unit and outputting a first control signal or a second control signal to the control end of the switching unit according to the current value so as to control the switching unit to work;

Wherein the switch unit turns on a path between the charging unit and the charging port and turns off a path between the first end of the control unit and the charging port when receiving a first control signal; the switch unit is used for switching on a passage between the first end of the control unit and the charging port and switching off the passage between the charging unit and the charging port when receiving a second control signal;

the control unit is further used for communicating with the wireless temperature probe when the switch unit is used for conducting a passage between the charging port and the first end of the control unit, so as to obtain electric quantity information of the wireless temperature probe, and according to the electric quantity information, the charging time and the output current value of the charging unit, obtain the service time of the wireless temperature probe, the electric quantity information at the current moment and the charging time required by the wireless temperature probe; the control unit transmits the use time and the power information to the user equipment by establishing wireless communication with the user equipment.

2. The cradle of claim 1, wherein the switching unit comprises:

The first end of the first switch is connected with the output end of the charging unit, the second end of the first switch is connected with the charging port, and the control end of the first switch is connected with the second end of the control unit; the first switch is used for switching on a passage between the charging unit and the charging port when receiving the first control signal and switching off the passage between the charging unit and the charging port when receiving the second control signal;

the first end of the second switch is connected with the first end of the control unit, the second end of the second switch is connected with the charging port, and the control end of the second switch is connected with the second end of the control unit; the second switch is used for switching on a passage between the first end of the control unit and the charging port when the second control signal is received and switching off the passage between the first end of the control unit and the charging port when the first control signal is received.

3. The cradle of claim 1, wherein the control unit comprises:

a current detection circuit for outputting the current value after detecting the output current value of the charging unit;

the wireless transmission module is used for carrying out wireless communication with the user equipment;

The main control circuit is connected with the output end of the current detection circuit and is used for outputting a first control signal or a second control signal to the control end of the control unit according to the current value; the first end of the main control circuit is connected with the third end of the switch unit; the main control circuit is also connected with the wireless transmission module and is in wireless communication with the user equipment through the wireless transmission module.

4. A charging stand control method, characterized in that the charging stand control method is applied to the charging stand according to claims 1 to 3, the charging stand control method comprising:

the communication loop is conducted, and a charging request is sent to the wireless temperature probe;

after the initial electric quantity information of the wireless temperature probe is obtained, the communication loop is turned off, and the charging loop is turned on to provide charging voltage for the wireless temperature probe;

detecting charging current, and obtaining the electric quantity, the service time and the charging time of the wireless temperature probe according to the charging current, the charging time and the initial electric quantity information;

establishing wireless communication with user equipment, and transmitting the electric quantity and the use time to the user equipment;

Comparing the charging current with a first preset current value and a second preset current value, and obtaining the charging state of the wireless temperature probe according to the comparison result.

5. The method of claim 4, wherein the step of turning off the communication circuit and turning on the charging circuit to provide the charging voltage to the wireless temperature probe after obtaining the test power information of the wireless temperature probe comprises:

receiving initial electricity quantity information of the wireless temperature probe and appointing charging time;

the communication loop is turned off, the charging loop is turned on, and a charging voltage is provided for the wireless temperature probe at the appointed charging time.

6. The method of controlling a cradle of claim 4, wherein the step of comparing the charging current with a first predetermined current value and a second predetermined current value and obtaining the operating state of the wireless temperature probe according to the comparison result comprises:

when the value of the charging current is smaller than the first preset current value, judging that the wireless temperature probe is in a state of being separated from a charging seat;

when the value of the charging current is larger than the first preset current value and smaller than the second preset current value, judging that the wireless temperature probe is in a fully charged state;

And when the charging current is larger than the second preset current value, judging that the wireless temperature probe is in a charging state.

7. The cradle control method according to claim 6, wherein after the step of comparing the charging current with a first predetermined current value and a second predetermined current value and obtaining the state of charge of the wireless temperature probe based on the comparison result, comprising:

when the wireless temperature probe is in a state of being separated from the charging seat, the charging loop is turned off, and the communication loop is turned on to send a charging request to the wireless temperature probe.

8. A wireless temperature probe, the wireless temperature probe comprising:

the charging port is used for accessing direct-current voltage;

a battery;

the first end of the switch circuit is connected with the charging port, and the second end of the switch circuit is connected with the output end of the battery;

the first end of the control circuit is connected with the control end of the switch circuit, the second end of the control circuit is connected with the output end of the battery, and the third end of the control circuit is connected with the third end of the switch circuit; the control circuit is used for controlling the switching circuit to work so that the switching circuit conducts the paths of the battery and the charging port and cuts off the paths of the charging port and the third end of the control circuit.

9. The wireless temperature probe of claim 8, wherein the wireless temperature probe further comprises:

and the wireless transmission device is connected with the control circuit and used for establishing wireless communication with the user equipment.

10. The wireless temperature probe of claim 8, wherein the switching circuit comprises:

the first end of the load switch is connected with the charging port, the second end of the load switch is connected with the battery, and the controlled end of the load switch is connected with the first end of the control circuit; the load switch is used for switching on a passage between the battery and the charging port when in operation;

the first end of the analog switch is connected with the charging port, the second end of the analog switch is connected with the third end of the control circuit, and the controlled end of the analog switch is connected with the first end of the control circuit; the analog switch is used for disconnecting a passage between the charging port and the control circuit when in operation.