Positioning circuit and electronic equipment

Abstract

The utility model discloses a positioning circuit and an electronic device, belonging to the positioning field, the positioning circuit comprises a positioning module used for receiving a satellite signal and outputting a corresponding positioning signal according to the satellite signal; the output end of the power supply is connected with the power end of the positioning module, and the power supply is used for supplying power to the positioning module; an enable signal output end of the enable circuit is connected with an enable end of the power supply; the enable circuit is used for periodically outputting an enable signal to an enable end of the power supply. The positioning circuit can control the dynamic dormancy of the positioning module, thereby reducing the overall power consumption of the platform.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning technology field, especially positioning circuit and electronic equipment. BACKGROUND

[0002] At present, with the rapid development of economy, the positioning module is important spatial information infrastructure. The system can be used in traffic transportation, telecommunication, forest fire prevention, disaster reduction and public security fields. In the related art, the positioning module is through the real-time fast data information transmission between the positioning module and the satellite and calculates the position information of the current positioning module. Therefore, the power consumption of the positioning module as a whole is large, which brings large power consumption. UTILITY MODEL CONTENT

[0003] The main purpose of the utility model is to provide a kind of positioning circuit and electronic equipment, to reduce the power consumption of positioning module.

[0004] To achieve the above object, the utility model provides a kind of positioning circuit, comprising:

[0005] Positioning module, for receiving satellite signal, and according to the satellite signal output corresponding positioning signal;

[0006] Power supply, the output of power supply and the power supply end of positioning module are connected, and power supply is used to power supply for positioning module;

[0007] Enable circuit, the enable signal output of enable circuit and the enable end of power supply are connected;Enable circuit is used to periodically output enable signal to power supply.

[0008] In an optional embodiment, the power supply includes:

[0009] Power module, for outputting electric energy;

[0010] Distribution switch, the input of distribution switch and the power output of power module are connected, the output of distribution switch and the power supply end of positioning module are connected, and the enable end of distribution switch and the enable signal output of enable circuit are connected;

[0011] The enable circuit is also used to periodically output enable signal to distribution switch.

[0012] In an optional embodiment, the positioning module further includes:

[0013] VBAT end, the VBAT end and the power output of power module are connected;

[0014] A positioning receiver, a power input end of the positioning receiver is connected with the VBAT end and the power end of the positioning module respectively.

[0015] In an optional embodiment, a feedback end of the power module is connected with an enable signal output end of the enable circuit.

[0016] The enable circuit is further configured to output a PWM signal with adjustable duty cycle to the power module, so as to control the power supply with a corresponding size of supply voltage to the VBAT end and the power end of the positioning module.

[0017] In an optional embodiment, the positioning circuit further comprises:

[0018] A timer, an output end of the timer is connected with a timing signal receiving end of the enable circuit, and the timer is configured to periodically output a first timing signal.

[0019] The enable circuit is further configured to output an enable signal to an enable end of the power supply when the first timing signal is received.

[0020] In an optional embodiment, the enable circuit and the timer are integrated in a system on chip.

[0021] The enable circuit is further configured to stop outputting the enable signal when the positioning signal output by the positioning module is received.

[0022] In an optional embodiment, a display is further included, a positioning information receiving end of the enable circuit is connected with a directional information output end of the positioning module, and a positioning information output end of the enable circuit is connected with the display, and the enable circuit is configured to stop outputting the enable signal after the display receives a new positioning signal output by the positioning information output end.

[0023] In an optional embodiment, the positioning circuit further comprises:

[0024] A user input module, a signal output end of the user input module is connected with a signal input end of the enable circuit, and the user input module is configured to output a positioning function start signal or a positioning function stop signal when triggered by a user.

[0025] The enable circuit is further configured to control the power supply to start supplying power to the positioning module when the positioning function start signal is received, and to control the power supply to stop supplying power to the positioning module when the positioning function stop signal is received.

[0026] The utility model further provides an electronic equipment, the electronic equipment includes the positioning circuit as described above.

[0027] The utility model discloses a circuit structure of a positioning circuit, which comprises an enabling circuit, a power supply and a positioning module. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0029] Figure 1 Fig. 1 is a circuit structure schematic diagram of a positioning circuit according to an embodiment of the present utility model.

[0030] Figure 2 Fig. 2 is a circuit structure schematic diagram of a positioning circuit according to another embodiment of the present utility model.

[0031] Explanation of the reference signs:

[0032] 10, positioning module; 20, power supply; 21, power module; 22, power distribution switch; 30, enabling circuit; 100, display.

[0033] The implementation, functional features and advantages of the present utility model will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, but not all the embodiments. Based on the embodiments in the present utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present utility model.

[0035] It should be noted that if the embodiments of the utility model have directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), if the specific posture changes, then the directionality indication also changes accordingly.

[0036] In addition, if the embodiments of the utility model have the description of "first", "second", etc., the description of "first", "second", etc. is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0037] The term "and / or" in this paper is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a kind of "or" relationship.

[0038] The utility model provides a kind of positioning circuit.

[0039] The positioning circuit can be applied to an electronic device, which can be a handheld device with a positioning function, such as a smart phone, a camera, etc., can be a vehicle-mounted device, such as a driving recorder, a navigator, etc., can be a smart wearable device, such as a smart watch, a smart bracelet, etc. The electronic device can also be an unmanned device, such as a drone, an unmanned vehicle, an unmanned underwater vehicle, etc. The electronic device can also be a special-purpose locator, such as a personal locator. Through the electronic device with the positioning function, the position of the electronic device can be obtained in real time. The positioning system can be used for navigation of an airplane, a ship, and a vehicle, and can also be applied to personal navigation, terminal positioning, and other services. The positioning system can provide three-dimensional coordinates, speed, and time information all day long, so that the user can perform accurate positioning and navigation at any place and at any time. The satellite positioning module can be implemented based on a platform or a circuit structure. The satellite positioning module can be a global satellite navigation system (GPS), a global navigation satellite system (GNSS), a Beidou satellite navigation system (BDS), a quasi-zenith satellite system (QZSS), a Galileo satellite navigation system (GSNS), etc.

[0040] When the positioning module is applied to the electronic device, the positioning function can be switched according to the demand of the user, so as to reduce the power consumption when the positioning module is in a full power state for a long time. In addition, when the satellite positioning module performs positioning, the satellite signal can be searched, and the position of the electronic device can be calculated according to the arrival time of the searched satellite signal, so as to realize satellite positioning of the electronic device. In combination with the data of multiple satellites, the motion speed and direction of the electronic device can be calculated. Since the positioning function does not need to be refreshed in real time, the refresh can be performed once every 30 s to 60 s. However, the positioning module is in a real-time working state regardless of whether real-time refresh is needed. If the positioning module is always in a full power supply state, the overall power consumption is wasted, and the power consumption of the electronic device is excessively high.

[0041] To solve the above problems, the utility model provides a kind of positioning circuit, refer to Figure 1 And Figure 2 In an embodiment of the utility model, the positioning circuit includes:

[0042] Positioning module 10 is used to receive satellite signal, and according to the satellite signal output corresponding positioning signal;

[0043] Power supply 20, the output terminal of which is connected to the power supply terminal VCC of the positioning module 10, the power supply 20 is used to supply power to the positioning module 10;

[0044] An enabling circuit 30 is provided, wherein the enabling signal output terminal of the enabling circuit 30 is connected to the enabling terminal of the power supply 20; the enabling signal output terminal of the enabling circuit 30 is used to periodically output an enabling signal to the enabling terminal of the power supply 20.

[0045] In this embodiment, the positioning module 10 is described using a GPS system as an example. The GPS system calculates the distance between the satellite and the electronic device by detecting satellite signals transmitted by the satellite. Optionally, the GPS system detects satellite signals transmitted by GPS satellites, obtains arrival time information through relevant calculations, and then calculates the distance between the satellite and the electronic device. The spatial position of the satellite is then calculated by combining this with the ephemeris information broadcast by the satellite, thus completing the positioning calculation.

[0046] When an electronic device achieves positioning, it typically relies on the combined efforts of a space segment (navigation satellite constellation), a control segment (ground monitoring system), and a positioning module 10 within the electronic device. The space segment consists of multiple navigation satellites, while the control segment monitors the satellite status and adjusts parameters to ensure positioning accuracy. The positioning module 10 receives and processes satellite signals, calculating the electronic device's position and other relevant information. The positioning module 10 may include a GPS receiver, a GPS antenna, and a GPS data processor. Optionally, the GPS receiver receives radio frequency signals via the GPS antenna and calculates decoded information such as latitude, longitude, altitude, speed, date, time, heading, and / or satellite status based on parameters received from multiple satellites. This decoded information is then output to the GPS data processor for digital processing. The GPS data processor can be implemented using FPGA, DSP, or microcontroller.

[0047] The power supply 20 can receive the power provided by the battery and / or the charge management module, and supply the positioning module 10 with the power after power conversion. The enable circuit 30 can be a circuit specially used for controlling the dynamic sleep of the positioning module 10, and can control whether to supply the positioning module 10 with power by sending an enable signal to control whether the power supply 20 works, so as to realize the dynamic sleep of the positioning module 10. The enable circuit 30 can also be a central processor of the electronic device, or a microprocessor specially used for controlling the power consumption of the positioning module 10, which is not limited herein. In this embodiment, the enable circuit 30 is taken as an example of the central processor of the electronic device, and the enable circuit 30 can realize data processing, such as processing of GPS data and communication data. When the enable circuit 30 is applied to an electronic device with display and navigation functions, the enable circuit 30 can also control the display 100 and the speaker in the electronic device to work, so as to realize the display and playing of positioning signals and navigation signals. The enable circuit 30 can also realize the on / off control of positioning, display, audio output and other functions, for example, based on the use demand of the user, the enable circuit 30 can output a corresponding enable signal to control the corresponding function modules in the electronic device to work, for example, in a smart phone, when the user needs to start the navigation function, the user can output a corresponding user operation instruction through a key, voice, gesture and the like, and the enable circuit 30 can control the positioning module 10, the display 100 and the speaker to start working in response to the operation instruction. Or when the user only needs to view the positioning information, the user can output a corresponding user operation instruction through a key, voice, gesture and the like, and the enable circuit 30 can control the positioning module 10 and the display 100 to start working in response to the operation instruction. When the positioning and navigation functions are not needed, the enable circuit 30 can control the positioning module 10 and the display 100 to work in a standby mode, or control the positioning module 10 and the display 100 to work in a sleep state, or control the power supply 20 to stop supplying the positioning module 10 and the speaker with power, so as to turn off the positioning and voice broadcast functions.

[0048] It should be noted that in the related art, the positioning module 10 is in a real-time working state regardless of whether real-time refreshing is needed, which leads to a certain waste of overall power consumption. Therefore, during the process of starting the positioning function of the electronic device, since the overall positioning function does not need to be refreshed in real time, but can be refreshed periodically, for example, refreshed once every 30s-60s, the enable circuit 30 can control the power supply 20 to supply the positioning module 10 with power periodically, so that the positioning module 10 works periodically and then enters a sleep state, that is, dynamic sleep.

[0049] Optionally, the enable circuit 30 can periodically output an enable signal and stop outputting the enable signal to the power supply 20. The enable signal can be a high level signal, and the stop outputting the enable signal is adjusted to a low level signal, or the enable signal can be a low level signal, and the stop outputting the enable signal is adjusted to a high level signal. For example, in the case that the user selects to turn on the positioning or navigation function of the electronic device, the enable circuit 30 outputs the enable signal to the power supply 20, and the power supply 20 supplies power to the positioning module 10 when receiving the enable signal. At this time, the positioning module 10 receives and processes satellite signals, calculates the position and other related information of the electronic device, and obtains a positioning signal. The positioning module 10 can output the processed positioning signal to the enable circuit 30, and the enable circuit 30 stops outputting the enable signal to the power supply 20 when receiving the positioning signal, so as to control the power supply 20 to stop supplying power to the positioning module 10. When the next period comes, the enable circuit 30 outputs the enable signal to the power supply 20 again, so that the power supply 20 supplies power to the positioning module 10 again. This is repeated until the user selects to turn off the positioning or navigation function of the electronic device, or other control mechanisms of the electronic device trigger the enable circuit 30 to control the power supply 20 to turn off the power supply to the positioning module 10. The other control mechanisms can be that the electronic device is screen-off, or other functions that affect the use of the positioning function are turned on by the user, so that the positioning module 10 is passively turned off. The utility model can periodically supply power to the positioning module 10. Compared with the uninterrupted power supply mode, the utility model can control the dynamic hibernation of the positioning module 10, reduce the overall power consumption of the positioning module 10, and further reduce the power consumption of the electronic device.

[0050] With reference to Figure 1 And Figure 2 In an embodiment, the power supply 20 comprises:

[0051] The power supply module 21 is used to output power;

[0052] The power distribution switch 22 is connected with the power output end of the power supply module 21 at the input end, and connected with the power end VCC of the positioning module 10 at the output end. The enable signal output end of the enable circuit 30 is connected with the enable end EN of the power distribution switch 22. The enable circuit 30 is further used to periodically output an enable signal to the power distribution switch 22.

[0053] In this embodiment, the power module 21 can perform voltage reduction, filtering, isolation and other processing on the accessed power supply, and output a corresponding size of power supply voltage to the positioning module 10 to which it supplies power. The power distribution switch 22 is controlled by the enable circuit 30, and the enable circuit 30 can output / stop outputting an enable signal to the power distribution switch 22 through the GPIO port, so that the power distribution switch 22 can control the on-off between the power module 21 and the corresponding positioning module 10. When the enable circuit 30 outputs the enable signal to the power distribution switch 22 through the GPIO port to control the power distribution switch 22 to be turned on, the power module 21 is connected between the power supply end VCC of the positioning module 10 and outputs power. When the enable circuit 30 stops outputting the enable signal to the power distribution switch 22 through the GPIO port to control the power distribution switch 22 to be turned off, the power module 21 is disconnected between the power supply end VCC of the positioning module 10 and stops outputting power. In this way, periodic control of the power distribution switch 22 to be turned on / off can control the power module 21 to be connected between the power supply end VCC of the positioning module 10 periodically, and further control the power module 21 to supply power to the positioning module 10 periodically, so as to reduce the overall power consumption of the positioning module 10.

[0054] With reference to Figure 1 and Figure 2 In an embodiment, the positioning module 10 further comprises:

[0055] a VBAT end connected with the power supply output end of the power module 21;

[0056] a positioning receiver, and the power input end of the positioning receiver is connected with the VBAT end and the power supply end VCC of the positioning module 10 respectively.

[0057] In this embodiment, the positioning receiver can be a GPS receiver, which receives radio frequency signals through a GPS antenna, and calculates decoded information about latitude, longitude, altitude, speed, date, time, heading and / or satellite status according to parameters transmitted by multiple satellites. The VBAT end is used to realize electrical connection between the positioning receiver and the power module 21. When the positioning module 10 is in a working state, the GPS receiver and the GPS antenna, and the GPS data processor are powered by the power supply 20 connected to the power end VCC of the positioning module 10, and calculate and process the positioning signal according to the received satellite signals. In this process, the GPS receiver and the GPS antenna, and the GPS data processor are powered by the power end VCC of the positioning module 10. When the positioning module 10 is in a sleep state, the power supply 20 connected to the power end VCC of the positioning module 10 is disconnected by the power distribution switch 22 at this time, and the VBAT end accesses the power supply from the power module 21 of the power supply module to maintain power supply to the GPS receiver, so that the GPS receiver can continue to work, and at this time the GPS receiver can continue to store ephemeris data and the last calculated visible satellite position, so that the positioning module 10 can realize hot start, that is, the GPS receiver starts with the latest ephemeris data and the last calculated visible satellite position. In the hot start process, the GPS receiver saves the last calculated position of the visible satellite, the almanac and the UTC time. When the power distribution switch 22 is closed and the power end VCC of the positioning module 10 restores electrical connection with the power module 21, the restart of the positioning module 10 is realized, and these saved information is basically close to the current satellite information in the sky, which can shorten the positioning time of the positioning module 10. Thus, after receiving the positioning signal output by the positioning module 10, the enable circuit 30 displays the result on the display 100. After the display 100 displays, the enable circuit 30 can power down the VCC of the positioning module 10 through the GPIO enable control, while the VBAT end is in a normal power state and can maintain the continuous work of the GPS receiver, at this time the positioning module 10 enters the sleep state, and the power consumption can be reduced from the 200mW level to the 1mW level. When the timer reaches the set timing time (such as 30S), the first timing signal is output to the enable circuit 30 again, so that the enable circuit 30 controls the power distribution switch 22 of the power supply 20 to be opened through the GPIO port, and then realizes the electrical connection between the power module 21 and the power end VCC of the positioning module 10. At this time, since the VBAT of the positioning module 10 is always in a normal power design, the positioning module 10 is in a hot start state, and the fast satellite data communication and positioning can be realized in 2-3s. After the data positioning, the power supply 20 is controlled to be closed again through the GPIO, and the power supply opening / closing control of the power supply 20 to the power input of the positioning module 10 is repeated.

[0058] With reference to Figure 1 And Figure 2 In an embodiment, the feedback end of the power module 21 is connected with the enable signal output end of the enable circuit 30.

[0059] The enable circuit 30 is further configured to output a PWM signal with adjustable duty cycle to the power module 21, so as to control the power module 21 to output a corresponding size of supply voltage to the VBAT end and the power end VCC of the positioning module 10.

[0060] In the embodiment, it can be understood that the positioning receiver does not receive the satellite signal sent by the satellite in the sleep state, and does not need to perform calculation and processing on the signal, so the power consumption in the sleep state is relatively small compared with the working state. Therefore, according to the different states of the positioning module 10, the power module 21 with different duty cycles is output, for example, the PWM signal with the first duty cycle is output when the positioning module 10 works, and the PWM signal with the second duty cycle is output when the positioning module 10 sleeps, so as to provide the positioning module 10 with different sizes of supply voltage. The first duty cycle is greater than the second duty cycle.

[0061] Optionally, when the positioning module 10 works, the enable circuit 30 outputs an enable signal to the power distribution switch 22 through the GPIO port, controls the power distribution switch 22 to be turned on, and the power module 21 is connected between the power end VCC of the positioning module 10 and the VBAT end. At this time, the enable circuit 30 outputs the PWM signal with the first duty cycle to the power module 21, so as to realize the increase of the output voltage of the power module 21. The voltage output by the power module 21 is output to the positioning receiver through the power distribution switch 22 and the power end VCC of the positioning module 10, so as to provide the power supply demand of the positioning receiver in the normal working state. When the positioning module 10 sleeps, the enable circuit 30 outputs an enable signal to the power distribution switch 22 through the GPIO port, controls the power distribution switch 22 to be turned off, and the power module 21 is connected between the power end VCC of the positioning module 10 and the VBAT end. At this time, the enable circuit 30 outputs the PWM signal with the second duty cycle to the power module 21, so as to realize the decrease of the output voltage of the power module 21. The voltage output by the power module 21 is output to the positioning receiver through the VBAT end, so as to maintain the power supply demand of the positioning receiver in the sleep state. In this way, the power consumption of the positioning module 10 can be reduced.

[0062] With reference to Figure 1 And Figure 2 In an embodiment, the positioning circuit further comprises:

[0063] a timer (not shown in the figure), an output end of the timer is connected with a timing signal receiving end of the enable circuit 30, and the timer is configured to periodically output a first timing signal.

[0064] The enabling circuit is also configured to output an enabling signal to an enabling end of the power supply when the first timing signal is received.

[0065] In this embodiment, the timer starts to work, and outputs the first timing signal to the enabling circuit 30 at a fixed time (for example, 30 seconds), so that the enabling circuit 30 can periodically receive the first timing signal and control the power supply 20 to supply power periodically. When the user selects to start the positioning or navigation function of the electronic device, the enabling circuit 30 controls the timer to start to work and outputs the enabling signal to the power supply 20 to control the power supply 20 to supply power to the positioning module 10.

[0066] Optionally, the enabling circuit 30 and the timer are integrated into a system on chip (SOC). Of course, in other embodiments, the enabling circuit 30 can also be a microprocessor with a timing function, such as an FPGA, a DSP, or a single-chip microcomputer.

[0067] With reference to Figure 1 and Figure 2 In an embodiment, the enabling circuit 30 is also connected to the orientation information output end of the positioning module 10. When the enabling circuit 30 receives the orientation signal output by the positioning module 10, the enabling circuit 30 stops outputting the enabling signal.

[0068] In this embodiment, when the enabling circuit 30 receives the orientation signal, the enabling circuit 30 outputs the enabling signal to the power supply 20 to control the power supply 20 to stop supplying power to the positioning module 10. When the enabling circuit 30 receives the first timing signal output by the timer, the enabling circuit 30 controls the power supply 20 to supply power to the positioning module 10 again, and when the enabling circuit 30 receives the orientation signal, the enabling circuit 30 stops outputting the enabling signal to the power supply 20 to control the power supply 20 to stop supplying power to the positioning module 10. The enabling circuit 30 outputs the enabling signal to control the power supply 20 to supply power to the positioning module 10 when the enabling circuit 30 receives the first timing signal, and stops outputting the enabling signal to the power supply 20 to control the power supply 20 to stop supplying power to the positioning module 10 when the enabling circuit 30 receives the orientation signal. The above process is repeated, and the periodic power supply to the positioning module 10 is realized by the first timing signal output by the timer and the received orientation signal.

[0069] With reference to Figure 1 and Figure 2 In an embodiment, the positioning circuit further includes a display 100, the enabling circuit 30 is also connected to the orientation information output end of the positioning module 10, the orientation information output end of the enabling circuit 30 is connected to the display 100, and the enabling circuit 30 is configured to stop outputting the enabling signal after outputting the new orientation signal to the display 100.

[0070] In this embodiment, the enabling circuit 30 controls the display 100 to display the positioning information when receiving the positioning signal output by the positioning module 10. After receiving the positioning signal output by the positioning module 10, the enabling circuit 30 displays the result on the display 100. When receiving the updated positioning signal output by the positioning module 10, the enabling circuit 30 updates the result displayed on the display 100 and then stops outputting the enabling signal, so that the VCC of the positioning module 10 is powered off through the GPIO enabling control. Of course, in other embodiments, the enabling circuit 30 can also power off the VCC of the positioning module 10 through the GPIO enabling control after displaying the result on the display 100.

[0071] It can be understood that when the positioning module 10 is applied to an electronic device with display and navigation functions, the enabling circuit 30 can also control the display 100, the speaker and the like in the electronic device to work to realize the display and playing of the positioning signal and the navigation signal. The enabling circuit 30 can also realize the on / off control of the positioning, display and audio output functions.

[0072] With reference to Figure 1 and Figure 2 In an embodiment, the positioning circuit further comprises:

[0073] a user input module (not shown in the figure), a signal output end of the user input module being connected with a signal input end of the enabling circuit 30; the user input module being used to output a positioning function on signal or a positioning function off signal when being triggered by a user;

[0074] the enabling circuit 30 is further used to control the power supply 20 to start supplying power to the positioning module 10 when receiving the positioning function on signal, and control the power supply 20 to stop supplying power to the positioning module 10 when receiving the positioning function off signal.

[0075] In this embodiment, the user input module can be a key, a voice pickup, a touch screen, a sensor and the like. The user can trigger the above-mentioned devices to realize the generation of the positioning function on / off output enabling signal, so that when the positioning module 10 is applied to an electronic device, the positioning function can be controlled to be turned on / off according to the positioning function on / off output enabling signal. When receiving the positioning function on signal, the enabling circuit 30 controls the power supply 20 to supply power to the positioning module 10. When receiving the positioning function off signal, the enabling circuit 30 controls the power supply 20 to cut off the power supply to the positioning module 10. In this way, the problem that the positioning module 10 is in a working state for a long time and causes high power consumption can be solved.

[0076] The utility model discloses further propose a kind of electronic equipment, the electronic equipment includes the positioning circuit as described above.

[0077] The detailed structure of the positioning circuit can refer to the above-mentioned embodiments, which will not be described here again; it can be understood that, since the above-mentioned positioning circuit is used in the electronic device of the present application, the embodiments of the electronic device of the present application include all the technical solutions of all the embodiments of the above-mentioned positioning circuit, and the technical effects achieved are also completely the same, which will not be described here again.

[0078] The electronic device can be a handheld device with a positioning function, such as a smart phone, a camera, etc., can also be a vehicle-mounted device, such as a driving recorder, a navigator, etc., can also be a smart wearable device, such as a smart watch, a smart bracelet, etc. The electronic device can also be an unmanned device, such as a drone, an unmanned vehicle, an unmanned underwater vehicle, etc. The electronic device can also be a special positioning device, such as a personal positioning device, through the electronic device with a positioning function, the position of the electronic device can be obtained in real time.

[0079] The above-mentioned is only the optional embodiment of the present application, and does not limit the application range of the present application, any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields under the inventive concept of the present application is included in the application protection range of the present application.

Claims

1. A positioning circuit, characterized in that, include: The positioning module is used to receive satellite signals and output corresponding positioning signals based on the satellite signals. A power supply, the output terminal of which is connected to the power supply terminal of the positioning module, is used to supply power to the positioning module; An enabling circuit, wherein the enabling signal output terminal of the enabling circuit is connected to the enabling terminal of the power supply; the enabling signal output terminal of the enabling circuit is used to periodically output an enabling signal to the enabling terminal of the power supply. The power supply includes: The power module is used to output electrical energy; A power distribution switch, wherein the input terminal of the power distribution switch is connected to the power output terminal of the power module, the output terminal of the power distribution switch is connected to the power terminal of the positioning module, and the enable terminal of the power distribution switch is connected to the enable signal output terminal of the enable circuit. The enabling circuit is also used to periodically output an enabling signal to the power distribution switch.

2. The positioning circuit as described in claim 1, characterized in that, The positioning module includes: The VBAT terminal is connected to the power output terminal of the power module. A positioning receiver, the power input terminal of which is connected to both the VBAT terminal and the power input terminal of the positioning module.

3. The positioning circuit as described in claim 2, characterized in that, The feedback terminal of the power module is connected to the enable signal output terminal of the enable circuit. The enabling circuit is also used to output a PWM signal with an adjustable duty cycle to the power supply module to control the output power supply voltage of a corresponding magnitude to the VBAT terminal and the power supply terminal of the positioning module.

4. The positioning circuit as described in claim 1, characterized in that, The positioning circuit also includes: A timer, the output of which is connected to the timing signal receiving terminal of the enable circuit, the timer being used to periodically output a first timing signal; The enabling circuit is also used to output an enabling signal to the enabling terminal of the power supply when the first timing signal is received.

5. The positioning circuit as described in claim 4, characterized in that, The enabling circuit and the timer are integrated into the system-on-a-chip.

6. The positioning circuit as described in claim 1, characterized in that, The positioning information receiving end of the enabling circuit is also connected to the orientation information output end of the positioning module. The enabling circuit is used to stop outputting the enabling signal when it receives the positioning signal output by the positioning module.

7. The positioning circuit as described in claim 1, characterized in that, Also includes the display, The positioning information receiving end of the enabling circuit is connected to the orientation information output end of the positioning module, and the positioning information output end of the enabling circuit is connected to the display. The enabling circuit is used to stop outputting the enabling signal after outputting a new positioning signal to the display from the positioning information output end.

8. The positioning circuit according to any one of claims 1 to 7, characterized in that, The positioning circuit also includes: The user input module has its signal output terminal connected to the signal input terminal of the enable circuit; the user input module is used to output a positioning function enable signal or a positioning function disable signal when triggered by the user. The enabling circuit is further configured to control the power supply to start supplying power to the positioning module when the positioning function is activated signal is received; and to control the power supply to stop supplying power to the positioning module when the positioning function is deactivated signal is received.

9. An electronic device, characterized in that, The electronic device includes the positioning circuit as described in any one of claims 1-8.

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