CN209766595U - overlength standby device - Google Patents
overlength standby device Download PDFInfo
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- CN209766595U CN209766595U CN201920717071.1U CN201920717071U CN209766595U CN 209766595 U CN209766595 U CN 209766595U CN 201920717071 U CN201920717071 U CN 201920717071U CN 209766595 U CN209766595 U CN 209766595U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
the utility model discloses a overlength standby device, overlength standby device sets up main control chip and battery metering circuit on same base plate, when the battery was not installed on the base plate, can not constitute the return circuit with battery metering circuit to when having avoided overlength standby device not to install the battery, battery metering circuit still can consume the condition of the electric quantity of battery, in addition, including load power supply control circuit in the overlength standby, can be when equipment is in the dormant state, cut off being connected of storage circuit and sensor acquisition circuit and battery, avoided when the dormant state, storage circuit and sensor acquisition circuit still consume the battery electric quantity, further promoted overlength standby device's stand-by time.
Description
Technical Field
The utility model relates to a circuit design technical field, more specifically say, relate to an overlength standby device.
Background
The ultra-long standby device generally refers to a device with standby time longer than 1 year under the support of one battery. Common ultra-long standby devices include: sensor parameter acquisition equipment, solar energy lighting and remote controller and the like.
referring to fig. 1, a structure of a general ultra-long standby device mainly includes a main control chip 10, a sensor acquisition circuit 50, a storage circuit 40, a battery 30, a battery metering circuit 20, and the like, wherein the main control chip 10, the sensor acquisition circuit 50, and the storage circuit 40 are mounted on a substrate, the battery metering circuit 20 is mounted together with the battery 30 and connected with the battery 30, and is configured to measure parameters such as SOC (State of Charge) of the battery 30 and store the measured parameters in the storage circuit 40, and the battery 30 is a detachable structure; the main control chip 10 is usually provided with a preset working frequency, that is, the main control chip 10 wakes up the sensor acquisition circuit 50 at preset time intervals to acquire sensor parameters, and then controls the battery metering circuit 20 to measure and store the battery 30 parameters of the battery 30 and then controls the ultra-long standby device to enter the sleep state again, so as to reduce power consumption and ensure that the ultra-long standby device can have a longer standby time; wherein the preset time is the reciprocal of the working frequency.
however, in practical applications, it is found that when the battery 30 is not mounted on the substrate and is electrically connected to the main control chip 10, etc., since the battery metering circuit 20 and the battery 30 are mounted together, the battery metering circuit 20 still forms a loop with the battery 30, and the electric quantity of the battery 30 is still consumed in a sleep state, so that when the battery 30 is in an off state (i.e., the battery 30 is not mounted), the electric quantity is still consumed by the battery metering circuit 20, and the usable time of the battery 30 is reduced, i.e., the standby time of the ultra-long standby device is reduced; in addition, when the sensor acquisition circuit 50 and the storage circuit 40 are in the sleep state, the ultra-long standby device shown in fig. 1 cannot cut off a loop formed by the battery 30, the sensor acquisition circuit 50 and the storage circuit 40, so that the sensor acquisition circuit 50 and the storage circuit 40 still need to consume the electric quantity of the battery 30 in the sleep state, and the standby time of the ultra-long standby device is further reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an overlength standby device to solve under the dormant state, the battery metering circuit still consumes the problem of the electric quantity of battery, has promoted overlength standby device's stand-by time.
In order to achieve the above object, the utility model provides a following technical scheme:
an ultra-long standby device comprising: the battery monitoring system comprises a substrate, and a main control chip, a power management circuit, a battery metering circuit, a sensor acquisition circuit, a load power control circuit and a storage circuit which are positioned on the substrate, wherein the input end of the power management circuit and the input end of the battery metering circuit are connected with a battery; wherein the content of the first and second substances,
The parameter output end of the battery metering circuit is connected with the parameter input end of the main control chip;
The output end of the power supply management circuit is connected with the input end of the main control chip and the input end of the load power supply control circuit;
and the output end of the load power supply control circuit is connected with the input end of the storage circuit and the input end of the sensor acquisition circuit.
optionally, the load power control circuit includes a control input terminal, a control output terminal and a power signal input terminal, the control input terminal is connected to the main control chip, the control output terminal is connected to the input terminal of the sensor acquisition circuit and the input terminal of the storage circuit, and the power signal input terminal is connected to the output terminal of the power management circuit.
optionally, the load power control circuit includes: the MOS transistor comprises a P-type MOS transistor, a first resistor and a second resistor; wherein the content of the first and second substances,
the source electrode of the P-type MOS tube is connected with the first end of the first resistor, and the source electrode of the P-type MOS tube is connected with the output end of the power management circuit;
the second end of the first resistor is connected with the first end of the second resistor and the grid electrode of the P-type MOS tube, and the second end of the second resistor is connected with the main control chip;
And the drain electrode of the P-type MOS tube is connected with the input end of the sensor acquisition circuit and the input end of the storage circuit.
Optionally, when the control input end receives the high level output by the main control chip, the P-type MOS transistor is turned off, and the sensor acquisition circuit and the storage circuit are in a sleep state; the amplitude of the high level output by the main control chip is equal to the amplitude of the voltage received by the power supply signal input end of the load power supply control circuit;
When the control input end receives the low level output by the main control chip, the P-type MOS tube is conducted, and the sensor acquisition circuit and the storage circuit are in working states.
optionally, the data input end of the storage circuit is connected to the main control chip through a two-wire serial bus.
Optionally, the battery metering circuit adopts a DS2781E + chip.
Optionally, the method further includes: a wireless transmission module;
The input end of the wireless transmission module is connected with the output end of the power management circuit, and the output end of the wireless transmission module is connected with the communication interface of the main control chip.
Optionally, the substrate is a printed circuit board or a flexible circuit board.
optionally, the battery is a liquid lithium ion battery or a lithium ion polymer battery.
Optionally, the sensor acquisition circuit includes a temperature acquisition circuit and/or a humidity acquisition circuit and/or a pressure acquisition circuit.
According to the above technical scheme, the utility model provides an overlength standby device, overlength standby device sets up main control chip and battery metering circuit on same base plate, when the battery is not installed on the base plate, can not constitute the return circuit with battery metering circuit to avoided among the prior art because battery metering circuit and battery installation constitute the return circuit together, and what lead to when overlength standby device does not install the battery, battery metering circuit still can consume the condition of the electric quantity of battery has promoted overlength standby device's stand-by time.
In addition, overlength standby device still includes the load power supply control circuit who all is connected with storage circuit and sensor acquisition circuit's input, load power supply control circuit can be when overlength standby device is in the dormant state, cut off storage circuit with sensor acquisition circuit with the return circuit that the battery constitutes has avoided when the dormant state, the condition that storage circuit and sensor acquisition circuit still consume the battery power appears, has further promoted overlength standby device's stand-by time.
Drawings
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a very long standby device in the prior art;
fig. 2 is a schematic structural diagram of an ultra-long standby device according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a load power control circuit according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a load power control circuit according to another embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a battery metering chip according to an embodiment of the present invention;
Fig. 6 is a schematic structural diagram of an ultra-long standby device according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
the embodiment of the utility model provides an overlength standby device, as shown in figure 2, include: the power supply comprises a substrate 100, a main control chip 500, a power management circuit 300, a battery metering circuit 400, a sensor acquisition circuit 700, a load power control circuit 800 and a storage circuit 600 which are positioned on the substrate 100, wherein the input end of the power management circuit 300 and the input end of the battery metering circuit 400 are connected with a battery 200; wherein the content of the first and second substances,
The output end of the power management circuit 300 is connected to both the input end of the main control chip 500 and the input end of the load power control circuit 800;
The output terminal of the load power control circuit 800 is connected to both the input terminal of the storage circuit 600 and the input terminal of the sensor acquisition circuit 700.
In this embodiment, the battery 200 is a detachable battery, that is, the battery 200 may be installed in a battery card slot on the substrate 100 to realize electrical connection with other structures located on the substrate 100, or may be taken out of the battery card slot in a detachable manner to perform a battery replacement operation or to enable the ultra-long standby device to be in a disconnected non-operating state.
In fig. 2, both the storage Circuit 600 and the sensor acquisition Circuit 700 are further connected to the main control chip 500, and optionally, the storage Circuit 600 is connected to an I2C interface of the main control chip 500 through an I2C bus (Inter-Integrated Circuit, two-wire serial bus) to implement data transmission between the storage Circuit 600 and the main control chip 500; the sensor acquisition circuit 700 is connected to an SPI (serial peripheral interface) interface of the main control chip 500 through an SPI bus, so as to realize data transmission between the sensor acquisition circuit 700 and the main control chip 500. The load power control circuit 800 and the battery metering circuit 400 are both connected to an IO (Input/output) Interface of the main control chip 500 through a Serial Interface (Serial Interface).
In this embodiment, the battery metering chip is not mounted on the battery 200, but is placed on the substrate 100, and the input terminal of the battery metering circuit 400 is connected to the battery 200, and the parameter output terminal is connected to the parameter input terminal of the main control chip 500. The advantage of this layout is that the battery 200 will be in a storage idle state for a long time in the actual use process of the ultra-long standby device, which avoids the problem that the battery metering circuit 400 still forms a loop with the battery 200 to consume the electric quantity of the battery when the battery is not mounted on the substrate, and improves the standby time of the ultra-long standby device.
when the switching between the working state and the dormant state of the ultra-long standby device is controlled by the main control chip 500, in a normal situation, a working frequency is set in the main control chip 500, and the main control chip 500 controls how often the ultra-long standby device works according to the working frequency.
In a working state, the main control chip 500 wakes up the power management circuit 300, the battery metering circuit 400, the sensor acquisition circuit 700, the load power control circuit 800 and the storage circuit 600; wherein the content of the first and second substances,
the power management circuit 300 converts the voltage provided by the battery 200 into an operating voltage with a certain voltage amplitude, for example, the voltage provided by the battery 200 is converted into an operating voltage of 3.3V. The utility model discloses it is right operating voltage's specific amplitude does not do the injecion, specifically depending on actual conditions and deciding.
The working voltage is provided to the main control chip 500 and the load power control circuit 800, the load power control circuit 800 provides the working voltage to the sensor acquisition circuit 700 and the storage circuit 600, the main control chip 500 firstly controls the sensor acquisition circuit 700 to acquire sensor parameters, then stores the acquired parameters in the storage circuit 600 after the acquisition is completed, and finally controls the battery metering circuit 400 to read the electric quantity of the battery 200, calculate the residual electric quantity, and store the residual electric quantity in the storage circuit 600.
In this embodiment, due to the existence of the load power control circuit 800, when the ultra-long standby device is in a sleep state, the load power control circuit 800 may cut off the situation that the storage circuit 600 and the sensor acquisition circuit 700 still consume the electric quantity of the battery 200, thereby further improving the standby time of the ultra-long standby device.
Optionally, the substrate 100 is a Printed Circuit Board (PCB) or a Flexible Printed Circuit (FPC).
The battery 200 is a lithium ion battery or a lithium ion polymer battery.
The sensor acquisition circuit 700 comprises a temperature acquisition circuit and/or a humidity acquisition circuit and/or a pressure acquisition circuit, and is used for acquiring parameters acquired by the temperature sensor, the humidity sensor or the pressure sensor in a working state, and the sensor acquisition circuit at least comprises one of the three circuits. It can be known that the parameter collected by the temperature sensor is a temperature parameter; the parameters collected by the humidity sensor are humidity parameters; the parameters collected by the pressure sensor are pressure parameters. In other embodiments of the present invention, the sensor acquisition circuit 700 is also used to acquire parameters acquired by other types of sensors.
on the basis of the above-mentioned embodiment, in an embodiment of the utility model, still refer to fig. 2, load power supply control circuit 800 includes control input, control output and power signal input, control input with main control chip 500 links to each other, control output with sensor acquisition circuit 700's input and memory circuit 600's input links to each other, power signal input with power management circuit 300's output links to each other.
the load power control circuit 800 comprises a working state and a sleep state, and when the load power control circuit 800 is in the working state, the load power control circuit is configured to provide the working voltage output by the output terminal of the power management circuit 300 to the storage circuit 600 and the sensor acquisition circuit 700; when the load power control circuit 800 is in the sleep state, the load power control circuit is configured to stop providing the working voltage to the storage circuit 600 and the sensor acquisition circuit 700, so that the storage circuit 600 and the sensor acquisition circuit 700 are in the sleep state;
The main control chip 500 is configured to output a state control level to the control input terminal to control the load power control circuit 800 to be in a state corresponding to the control level.
in fig. 2, reference I5 denotes the input of the power management circuit 300, and O5 denotes the voltage output of the power management circuit 300; i1 represents a power supply signal input terminal of the load power supply control circuit 800, O1 represents a control output terminal of the load power supply control circuit 800, and C1 represents a control input terminal of the load power supply control circuit 800; i2 represents the operating voltage input of the sensor acquisition circuit 700, O2 represents the output of the sensor acquisition circuit 700; i3 represents the input of the memory circuit 600, O3 represents the output of the memory circuit 600; i4 represents the input of the battery gauge circuit 400, O4 represents the output of the battery gauge circuit 400; I2C represents an I2C interface of the main control chip 500, SPI represents an SPI interface of the main control chip 500, and IO represents an IO interface of the main control chip 500.
In this embodiment, the load power control circuit 800 is further configured to switch the states of the sensor acquisition circuit 700 and the storage circuit 600 according to the switching of the states of the load power control circuit. That is, when the load power control circuit 800 is in an operating state, the ultra-long standby device is in an operating state, and the operating voltage output by the power management circuit 300 is provided to the storage circuit 600 and the sensor acquisition circuit 700, so that the storage circuit 600 and the sensor acquisition circuit 700 can operate normally;
When the load power control circuit 800 is in the sleep state, the ultra-long standby device is in the sleep state, and stops providing the working voltage for the storage circuit 600 and the sensor acquisition circuit 700, so that the storage circuit 600 and the sensor acquisition circuit 700 are in the sleep state, power consumption can be further reduced, and the standby time of the ultra-long standby device is prolonged. This is because in the ultra-long standby device in the prior art, when the ultra-long standby device is in a dormant state, the working voltage provided to the storage circuit and the sensor acquisition circuit cannot be cut off, so that the storage circuit and the sensor acquisition circuit still consume the electric quantity of the battery continuously, the power consumption of the ultra-long standby device is improved, and the standby time of the ultra-long standby device is reduced.
On the basis of the above embodiments, an embodiment of the present invention provides a practical specific structure of the load power control circuit 800, as shown in fig. 3, including: a P-type MOS (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET) Transistor QP, a first resistor R1, and a second resistor R2; wherein the content of the first and second substances,
The source electrode of the P-type MOS tube is connected with the first end of the first resistor, and the source electrode of the P-type MOS tube is connected with the output end of the power management circuit;
the second end of the first resistor is connected with the first end of the second resistor and the grid electrode of the P-type MOS tube, and the second end of the second resistor is connected with the main control chip;
The drain electrode of the P-type MOS tube is connected with the input end of the sensor acquisition circuit and the input end of the storage circuit;
Correspondingly, the control level output by the main control chip comprises a high level and a low level;
When the control input end receives the high level output by the main control chip, the P-type MOS tube is cut off, and the sensor acquisition circuit is in a dormant state;
when the control input end receives the low level output by the main control chip, the P-type MOS tube is conducted, and the sensor acquisition circuit is in a working state.
In this embodiment, when the control level is a high level, the source voltage and the gate voltage of the P-type MOS transistor QP are both high levels, at this time, the gate-source voltage of the P-type MOS transistor QP is greater than the turn-on threshold voltage of the P-type MOS transistor QP, and at this time, the P-type MOS transistor QP is turned off, so that the power supply signal input end and the control output end of the load power supply control circuit 800 are disconnected, the purpose of supplying working voltage to the sensor acquisition circuit 700 and the storage circuit 600 is achieved, and the sensor acquisition circuit 700 and the storage circuit 600 enter a sleep state.
in addition, in order to further avoid the power consumption of the load power control circuit 800 in the sleep state, optionally, the amplitude of the high level output by the main control chip is equal to the amplitude of the voltage input at the power signal input end of the load power control circuit 800. In this way, in the load power supply control circuit, since the source and drain of the P-type MOS transistor are disconnected, there is no path between the power supply signal input terminal and the control output terminal of the load power supply control circuit 800, that is, there is no current consumption; and because the power signal input end and the control input end input the same level, therefore, there is also no path between power signal input end and the control input end, also there is no current consumption, has avoided the electric quantity consumption of load power control circuit 800 when in the dormant state.
When the control level is low level, the difference value between the gate voltage and the source voltage of the P-type MOS transistor QP can be smaller than the conduction threshold voltage of the P-type MOS transistor QP by setting the resistance value of the reasonable first resistor R1, and the P-type MOS transistor QP is conducted at this time, so that a path is formed between the power signal input end and the control output end of the load power supply control circuit 800, the purpose of providing working voltage for the sensor acquisition circuit 700 and the storage circuit 600 is achieved, and the normal operation of the sensor acquisition circuit 700 and the storage circuit 600 is ensured.
in addition, in this embodiment, the P-type MOS transistor is used as the switching transistor in the load power control circuit 800, so as to increase the switching speed of the load power control circuit 800 and reduce the leakage current in the load power control circuit 800 when the P-type MOS transistor is in the off state.
Optionally, the P-type MOS transistor QP is a P-channel enhancement type field effect transistor.
optionally, as shown in fig. 4, the circuit structure of the load power control circuit 800 may further include: an N-type MOS tube QN and a third resistor R3; wherein the content of the first and second substances,
The source of the N-type MOS transistor QN serves as a power signal input terminal of the load power control circuit 800;
The drain of the N-type MOS transistor QN serves as the control output terminal of the load power control circuit 800;
The gate of the N-type MOS transistor QN is connected to one end of the third resistor R3, and one end of the third resistor R3, which is far away from the N-type MOS transistor QN, is used as the control input end of the load power control circuit 800.
at this time, correspondingly, the control level includes a high level and a low level;
When the control level is a low level, the N-type MOS transistor QN is turned off, and the load power control circuit 800 is in a sleep state;
When the control level is a high level, the N-type MOS transistor QN is turned on, and the load power supply control circuit 800 is in a working state.
In this embodiment, when the control level is a high level, by setting a relative relationship between a high level amplitude and an amplitude of the working voltage received by the input terminal of the load power control circuit 800 and a resistance value of the third resistor R3, a difference between a gate voltage and a source voltage of the N-type MOS transistor QN may be greater than a turn-on threshold voltage of the N-type MOS transistor QN; at this time, the N-type MOS transistor QN is turned on, so that a path is formed between the power signal input terminal and the control output terminal of the load power control circuit 800, thereby achieving the purpose of providing a working voltage for the sensor acquisition circuit 700 and the storage circuit 600, and ensuring the normal operation of the sensor acquisition circuit 700 and the storage circuit 600.
When the control level is a low level, the gate voltage of the N-type MOS transistor QN is a low level, the source voltage is a high level, the gate-source voltage of the N-type MOS transistor QN is smaller than the turn-on threshold voltage of the N-type MOS transistor QN, and the N-type MOS transistor QN is turned off, so that the power supply signal input terminal and the control output terminal of the load power supply control circuit 800 are disconnected, the purpose of supplying the working voltage to the sensor acquisition circuit 700 and the storage circuit 600 is achieved, and the sensor acquisition circuit 700 and the storage circuit 600 enter a sleep state.
In order to avoid the existence of a conductive channel between the source and the drain of the N-type MOS transistor QN in an off state, optionally, the N-type MOS transistor QN is an N-channel enhancement type field effect transistor.
In other embodiments of the present invention, the load power control circuit 800 can also be implemented by devices having a switching function, such as other types of switch tubes, and the present invention is not exhaustive here.
On the basis of the above embodiment, in another embodiment of the present invention, the data input end of the storage circuit 600 is connected to the main control chip 500 through a two-wire serial bus, and the battery metering circuit 400 is configured to collect the battery parameters of the battery 200 and transmit the battery parameters to the main control chip 500 when the battery metering circuit is in an operating state;
The main control chip 500 is further configured to store the battery parameters in the storage circuit 600 after receiving the battery parameters.
alternatively, as shown in fig. 5, the battery metering circuit 400 is a DS2781E + chip.
The DS2781E + chip may be used to measure voltage, temperature and current parameters, and may calculate the remaining capacity of a liquid Lithium-Ion Battery (LIB) or a Lithium-Ion Polymer Battery (Lithium-Ion Polymer Batteries) according to the measured parameters.
Therefore, optionally, when the battery metering circuit 400 is a DS2781E + chip, the battery 200 may be a liquid lithium ion battery or a lithium ion polymer battery.
in fig. 5, in addition to the DS2781E + chip, peripheral circuit devices such as a first capacitor, a second capacitor, a fourth resistor, a fifth resistor, a sixth resistor, and a seventh resistor are shown. Reference symbol Vbattary in fig. 5 denotes a connection terminal of the battery 200 and the battery metering circuit 400, DATA denotes a connection terminal of the battery metering circuit 400 and the main control chip 500, GND denotes a ground terminal of the battery metering circuit 400, and battery _ GND denotes a ground terminal of the battery 200;
a DQ pin of the DS2781E + chip is used for realizing communication with a main control chip, and a PIO pin is used for outputting Continuous sink current (Continuous SinkCurrent); the VIN pin is used for receiving the output voltage of the battery, and the VDD pin is used for receiving the working voltage; the OVD and the VB are used for receiving a mode selection signal; the SNS and VSS pins are used to detect the voltage across the seventh resistor R7. Referring to fig. 5, in fig. 5, reference numerals R4, R5, R6, and R7 respectively denote a fourth resistor, a fifth resistor, a sixth resistor, and a seventh resistor, and reference numerals C1 and C2 respectively denote a first capacitor and a second capacitor. Since the specific usage of the DS2781E + chip as the battery metering circuit 400 is well known to those skilled in the art, the present invention is not described herein.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 6, the ultra-long standby device further includes: a wireless transmission module 900;
the input end of the wireless transmission module 900 is connected to the output end of the power management circuit 300, and the output end of the wireless transmission module 900 is connected to the communication interface of the main control chip 500.
the wireless transmission module 900 may enable wireless communication between the ultra-long standby device and an external device.
To sum up, the embodiment of the utility model provides an overlength standby device, overlength standby device sets up main control chip 500 and battery metering circuit 400 on same base plate 100, when battery 200 is not installed on base plate 100, can not constitute the return circuit with battery metering circuit 400 to avoided among the prior art because battery metering circuit 400 and battery 200 install the component return circuit together, and what lead to when overlength standby device does not install battery 200, battery metering circuit 400 still can consume the condition of the electric quantity of battery 200 has promoted the standby time of overlength standby device.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An ultra-long standby device, comprising: the battery monitoring system comprises a substrate, and a main control chip, a power management circuit, a battery metering circuit, a sensor acquisition circuit, a load power control circuit and a storage circuit which are positioned on the substrate, wherein the input end of the power management circuit and the input end of the battery metering circuit are connected with a battery; wherein the content of the first and second substances,
The parameter output end of the battery metering circuit is connected with the parameter input end of the main control chip;
the output end of the power supply management circuit is connected with the input end of the main control chip and the input end of the load power supply control circuit;
and the output end of the load power supply control circuit is connected with the input end of the storage circuit and the input end of the sensor acquisition circuit.
2. The ultra-long standby device of claim 1, wherein:
The load power supply control circuit comprises a control input end, a control output end and a power signal input end, the control input end is connected with the main control chip, the control output end is connected with the input end of the sensor acquisition circuit and the input end of the storage circuit, and the power signal input end is connected with the output end of the power management circuit.
3. The ultra-long standby device of claim 2, wherein the load power control circuit comprises: the MOS transistor comprises a P-type MOS transistor, a first resistor and a second resistor; wherein the content of the first and second substances,
The source electrode of the P-type MOS tube is connected with the first end of the first resistor, and the source electrode of the P-type MOS tube is connected with the output end of the power management circuit;
The second end of the first resistor is connected with the first end of the second resistor and the grid electrode of the P-type MOS tube, and the second end of the second resistor is connected with the main control chip;
and the drain electrode of the P-type MOS tube is connected with the input end of the sensor acquisition circuit and the input end of the storage circuit.
4. The ultra-long standby device of claim 3,
When the control input end receives the high level output by the main control chip, the P-type MOS tube is cut off, and the sensor acquisition circuit and the storage circuit are in a dormant state; the amplitude of the high level output by the main control chip is equal to the amplitude of the voltage received by the power supply signal input end of the load power supply control circuit;
When the control input end receives the low level output by the main control chip, the P-type MOS tube is conducted, and the sensor acquisition circuit and the storage circuit are in working states.
5. The standby device of claim 1 wherein the data input of the memory circuit is coupled to the host chip via a two-wire serial bus.
6. The standby device of claim 1 wherein the battery gauge circuit employs a DS2781E + chip.
7. The ultra-long standby device of claim 1, further comprising: a wireless transmission module;
the input end of the wireless transmission module is connected with the output end of the power management circuit, and the output end of the wireless transmission module is connected with the communication interface of the main control chip.
8. the lengthy standby device of claim 1, wherein the substrate is a printed circuit board or a flexible circuit board.
9. The lengthy standby device according to claim 1, wherein the battery is a liquid lithium ion battery or a lithium ion polymer battery.
10. The lengthy standby device according to claim 1, wherein the sensor acquisition circuit comprises a temperature acquisition circuit and/or a humidity acquisition circuit and/or a pressure acquisition circuit.
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| CN201920717071.1U CN209766595U (en) | 2019-05-17 | 2019-05-17 | overlength standby device |
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| CN201920717071.1U CN209766595U (en) | 2019-05-17 | 2019-05-17 | overlength standby device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111007781A (en) * | 2019-12-27 | 2020-04-14 | 北京润科通用技术有限公司 | Control method and system of environment monitoring device |
| WO2024000307A1 (en) * | 2022-06-29 | 2024-01-04 | 京东方科技集团股份有限公司 | X-ray detector and system |
-
2019
- 2019-05-17 CN CN201920717071.1U patent/CN209766595U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111007781A (en) * | 2019-12-27 | 2020-04-14 | 北京润科通用技术有限公司 | Control method and system of environment monitoring device |
| WO2024000307A1 (en) * | 2022-06-29 | 2024-01-04 | 京东方科技集团股份有限公司 | X-ray detector and system |
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