CN215865302U - Battery-free hygrothermograph device - Google Patents

Battery-free hygrothermograph device Download PDF

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CN215865302U
CN215865302U CN202121566268.3U CN202121566268U CN215865302U CN 215865302 U CN215865302 U CN 215865302U CN 202121566268 U CN202121566268 U CN 202121566268U CN 215865302 U CN215865302 U CN 215865302U
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output
circuit
hygrothermograph
voltage detection
voltage
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张春红
高恬溪
单晓涛
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Lingsi Electronic Technology Dongguan Co ltd
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Lingsi Electronic Technology Dongguan Co ltd
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Abstract

The utility model discloses a battery-free hygrothermograph device, which comprises an energy collecting system, a timing triggering system and a hygrothermograph system; the energy collection system comprises an optical energy collection converter, a first LX01 voltage detection circuit, an LX02 energy collection circuit, a first power management module, a pull-up resistor R1 and a super capacitor C1; input end V of the light energy collection converter and the first LX01 voltage detection circuitinConnected to the output of the first LX01 voltage detection circuitGo out VOD1Output V of the first LX01 voltage detection circuitOD1The enable end of the LX02 energy collecting circuit is connected; the output of the light energy collecting converter is connected with the input of the LX02 energy collecting circuit, the output of the LX02 energy collecting circuit is connected with the input of the first power management module, the output voltage of the first power management module supplies power for the timing trigger system, and the voltage output end of the timing trigger system supplies power for the hygrothermograph system; and the power consumption of the energy collection system and the load is reduced by a zero-power continuous voltage detection technology.

Description

Battery-free hygrothermograph device
Technical Field
The utility model belongs to the technical field of electronic equipment design, and particularly relates to a battery-free hygrothermograph device.
Background
The temperature and humidity of the environment have a great influence on production and life, and therefore, the measurement of the temperature and humidity is extremely important. The hygrothermograph is an electronic equipment that can measure the humiture through the sensor with certain time interval, and current hygrothermograph needs the battery to supply power, and stand-by power consumption is great moreover, has occupied more than half of total consumption, and the change of battery often can reduce user's use and experience.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides a battery-free hygrothermograph device, which can simultaneously reduce the power consumption of an energy collecting system and a load through a zero-power-consumption continuous voltage detection technology, so that the light energy collected by the system can meet the load requirement, the inconvenience brought to users by battery replacement is avoided, and the use convenience is greatly improved.
In order to achieve the purpose, the utility model adopts the technical scheme that: a battery-free hygrothermograph device comprises an energy collecting system, a timing trigger system and a hygrothermograph system; the energy collection system comprises an optical energy collection converter, a first LX01 voltage detection circuit, an LX02 energy collection circuit, a first power management module, a pull-up resistor R1 and a super capacitor C1; input end V of the light energy collection converter and the first LX01 voltage detection circuitinConnected, the output V of the first LX01 voltage detection circuitOD1The output V of the first LX01 voltage detection circuit is connected with VBAT through a pull-up resistor R1OD1The enable end of the LX02 energy collecting circuit is connected; the output of the light energy collecting converter is simultaneously connected with the input of the LX02 energy collecting circuit, the output of the LX02 energy collecting circuit is VBAT, the output of the LX02 energy collecting circuit is connected with VBATThe output VBAT of the energy collection circuits of the energy storage super capacitor C1 and the LX02 is connected with the input of the first power management module at the same time, the output voltage of the first power management module supplies power for the timing trigger system, and the voltage output end of the timing trigger system supplies power for the hygrothermograph system.
The timing trigger system comprises an LX04 ultra-low power consumption oscillator, a logic gate, a frequency divider, an MOS switch, an RC delay circuit and a second power management module; the output of the oscillator LX04 is connected with the input of the frequency divider, and two output ends of the frequency divider are respectively connected with the logic gate and the RC delay circuit; the anode of the capacitor C2 is connected to the input of the logic gate, the output of which is connected to the input V of the second LX01 voltage detection circuitinConnecting;
output V of the second LX01 voltage detection circuitOD2The gate of the switch NMOS-Q1 is connected with the pull-up resistor R2, the drain of the switch NMOS-Q1 is connected with the output VBAT of the LX02 energy collecting circuit, and the source of the switch NMOS-Q1 is connected with the input V of the second power management moduleinConnected, output V of the second power management moduleDD2The negative pole of the capacitor C2 is grounded to provide stable voltage for the load hygrothermograph system.
The two output ends of the frequency divider are respectively a first output a and a second output b, and the logics of the first output a and the second output b are opposite, wherein the first output a is connected with an input interface a of the logic gate, and the second output b is connected with the RC delay circuit; the first LX01 voltage detection circuit is the same as the second LX01 voltage detection circuit, and the logic gate adopts a NOR gate.
The power supply interfaces of the oscillator, the frequency divider and the logic gate are all connected with the voltage output V in the energy collecting systemOD1And (4) connecting.
The hygrothermograph system comprises a signal processing and control unit, a low-power consumption hygrothermograph and a paper screen, wherein the temperature and humidity sensor is connected with the input end of the signal processing and control module, and the output end of the signal processing and control module is connected with the paper screen.
The output end of the signal processing and control module is connected with a ZigBee module.
The grounding end of the LX01 voltage detection circuit is grounded, and the negative electrode of the super capacitor C1 is grounded.
The light energy collecting converter adopts a solar panel.
The first LX01 voltage detection circuit comprises a high-voltage monitoring circuit, a medium-voltage monitoring circuit and a low-voltage monitoring circuit, wherein V of the high-voltage monitoring circuitO(H)The output is connected with the control end of the medium voltage monitoring circuit and the V of the medium voltage monitoring circuitO(M)The output of the high-voltage monitoring circuit, the output of the medium-voltage monitoring circuit and the output of the low-voltage monitoring circuit are connected with the output V of the LX01 voltage monitoring circuitOD1。
Compared with the prior art, the utility model has at least the following beneficial effects:
according to the utility model, through a zero-power-consumption continuous voltage detection technology, the first LX01 voltage detection circuit can realize the function that the energy collection system works only when the collected energy is larger than the static power consumption of the LX02 energy collection circuit; the power consumption of the energy collection system and the load is reduced, the light energy collected by the system can meet the load requirement, the inconvenience brought to users by charging or battery replacement can be avoided, and the use convenience is greatly improved; the hygrothermograph system can be awakened in a preset interval time through the timing trigger system, after the hygrothermograph system is awakened, the hygrothermograph works for a period of time, then the hygrothermograph system enters a zero-power-consumption standby mode again, the power consumption is reduced, and meanwhile the hygrothermograph system is convenient to use and favorable for improving the environmental protection effect.
Furthermore, a solar energy collection technology is adopted to provide a power supply for the system, the system does not need a battery or charging, the system provides ZigBee as a wireless communication mode, and meanwhile, a display function is integrated.
Furthermore, when the NOR gate outputs a low level in a period and the load hygrothermograph system is shut down, the paper screen still displays the low level, and normal reading of a user cannot be influenced.
Drawings
FIG. 1 is a schematic diagram of the system architecture of the present invention;
FIG. 2 is a signal control schematic diagram of an LX01 voltage detection circuit according to the present invention;
fig. 3 is a timing diagram of a timing trigger system.
Detailed Description
The utility model provides a battery-free hygrothermograph device, which comprises an energy collecting system, a timing triggering system and a hygrothermograph system;
the energy collection system comprises a solar panel, a first LX01 voltage detection circuit, an LX02 energy collection circuit, a first power management module and a resistor capacitor.
Wherein the solar panel in the energy collecting system and the input end V of the first LX01 voltage detection circuitinConnected, output V of the LX01 voltage detection circuitOD1Output V of the first LX01 voltage detection circuitOD1Connected to VBAT through pull-up resistor R1. Output V of first LX01 voltage detection circuitOD1The enable end of the LX02 energy collecting circuit is connected; the output of the solar panel is simultaneously connected with the input of the LX02 energy collecting circuit, the output of the LX02 energy collecting circuit is VBAT, the output VBAT of the LX02 energy collecting circuit is connected with the energy storage super capacitor C1, the energy storage super capacitor C1 provides energy for other systems, the output VBAT of the LX02 energy collecting circuit is simultaneously connected with the input of the first power management module, and the output voltage of the first power management module is VDD1。
The timing trigger system comprises an LX04 ultra-low power consumption oscillator, a logic gate, a frequency divider, an MOS switch, an RC delay circuit and a second power management module; the output of the LX04 ultra-low power consumption oscillator is connected with the input of the frequency divider, the oscillation frequency is adjusted in a large range through the digit number of the frequency divider, the first output a of the frequency divider and the second output b of the frequency divider have opposite logics, wherein the output a of the frequency divider is connected with the input interface a of the logic gate, the second output b of the frequency divider is connected with the RC delay circuit, the anode of the capacitor C2 is connected with the input interface b of the logic gate, and the output of the logic gate is connected with the input end V of the second LX01 voltage detection circuitinConnecting; the power interfaces of the oscillator, the frequency divider and the logic gate are all connected with the output V of the first power management module in the energy collection systemDD1Connected to the output V of the second LX01 voltage detection circuitOD2Connected to the output VBAT of the LX02 energy harvesting circuit through a pull-up resistor R2,and the output V of the LX01 voltage detection circuitOD2The drain of the MOS switch NMOS-Q1 is connected with the output VBAT of the LX02 energy collecting circuit, and the source of the NMOS-Q1 is connected with the input V of the second power management moduleinConnected, output V of the second power management moduleDD2And a NOR gate is adopted as a logic gate to provide stable voltage for a load hygrothermograph system.
The hygrothermograph system comprises a ZigBee module, a signal processing and controlling unit, a low-power consumption hygrothermograph and a paper screen, wherein the temperature and humidity sensor is connected with the input end of the signal processing and controlling module, and the output end of the signal processing and controlling module is connected with the ZigBee module and the paper screen.
The hygrothermograph system is awakened by the timing trigger system, and in an awakening state, the temperature and humidity sensor converts temperature and humidity analog quantity into digital signals and transmits the digital signals to the digital signal processing and control module, the module displays corresponding temperature and humidity on a control paper screen, and the ZigBee module is controlled to transmit temperature and humidity information to the binding gateway. .
As a preferred embodiment, the LX01 voltage detection circuit adopts a voltage detection circuit disclosed in the patent No. ZL201710971531.9, the first LX01 voltage detection circuit comprises a high-voltage monitoring circuit, a medium-voltage monitoring circuit and a low-voltage monitoring circuit, and V of the high-voltage monitoring circuitO(H)The output is connected with the control end of the medium voltage monitoring circuit and the V of the medium voltage monitoring circuitO(M)The output of the high-voltage monitoring circuit, the output of the medium-voltage monitoring circuit and the output of the low-voltage monitoring circuit are connected with the output V of the LX01 voltage monitoring circuitOD1。
As an alternative embodiment, the present invention can also be powered by a wireless energy harvesting system, such as the energy harvesting system described in the patent publication CN212674276U, which is powered by a power management module therein.
As shown in FIG. 1, the utility model comprises an energy collection system, a timing trigger system and a hygrothermograph system, wherein a solar panel in the energy collection system and an input end V of a first LX01 voltage detection circuitinAnd (4) connecting. When in useInput end V of first LX01 voltage detection circuitinIs lower than the threshold V of the LX01 voltage detection circuitTHThe output V of the first LX01 voltage detection circuitOD1Keeping low when the input terminal V of the first LX01 voltage detection circuitinIs higher than the threshold value V of the LX01 voltage detection circuitTHThe output V of the first LX01 voltage detection circuitOD1Converted to high level and held to the input terminal V of the first LX01 voltage detection circuitinIs lower than a falling threshold V of the LX01 voltage detection circuitTLThe signal diagram is shown in fig. 2. Output V of first LX01 voltage detection circuitOD1The solar panel outputs high voltage exceeding V when the indoor is illuminated by the connection of the pull-up resistor R1 and the enable end En of the LX02 energy collecting circuitTHWhen no light exists indoors, the solar panel outputs low voltage, the LX02 energy collecting circuit enters a shutdown state, the first LX01 voltage detection circuit achieves the function that the energy collecting system works only when the collected energy is larger than the static power consumption of the LX02 energy collecting circuit, and the energy collecting efficiency is improved. The output of the solar panel is simultaneously connected with the input end V of the LX02 energy collecting circuitinIn connection, the LX02 energy harvesting circuit improves energy harvesting efficiency using maximum power tracking. The output of the LX02 energy harvesting circuit is VBAT, which is connected to the super capacitor C1, and the super capacitor C1 serves as a main energy storage capacitor and is an energy source for other systems. The positive pole of the super capacitor C1 is connected with a first power management module, and the output of the first power management module is VDD1，VDD1And supplying power to the NOR gate of the LX04 ultra-low power consumption oscillator and the frequency divider.
The timing trigger system can wake up the load hygrothermograph at regular time, and compared with the method that a signal processing and control center in the load system measures the temperature and the humidity according to a certain frequency through a timer, the static power consumption of the timing trigger system is much smaller, the average consumed current is only about 110nA under the condition of 1.2V power supply, the power consumption of the load system is 0 when the load system is not activated by the timer, and the work of the load hygrothermograph is greatly reduced through the modeAnd (4) consuming. The output of an LX04 ultra-low power consumption oscillator in the timing trigger system is connected with the input of a frequency divider, the output of the LX04 ultra-low power consumption oscillator is a square wave of about 50Hz-1000Hz, the function of the frequency divider is to greatly control the duration of a period, the frequency divider is determined by the bit number of the frequency divider, a first output a and a second output b of the frequency divider have opposite logics, wherein the first output a of the frequency divider is connected with an input interface a of a NOR gate, the second output b of the frequency divider is connected with an RC delay circuit, the positive electrode of a capacitor C2 is connected with an input interface b of a NOR gate, and the duty ratio of a periodic signal, namely the ratio of the activated time of a load to the shutdown time, is controlled by adjusting the values of a resistor R3 and a capacitor C2 in the RC delay circuit. The output of the NOR gate and the input end V of the second LX01 voltage detection circuitinConnecting the power supply interface of the oscillator, frequency divider and NOR gate with the output V of the first power management module in the energy harvesting systemDD1Are connected. Output V of the second LX01 voltage detection circuitOD2The gate of the switch NMOS-Q1 is connected through a pull-up resistor R2, the drain of the switch NMOS-Q1 is connected to the output VBAT of the LX02 energy harvesting circuit, and the source is connected to the input V of the power managementinAnd because the voltage of the VBAT is not adjusted and is not suitable for serving as a power supply of a load, the voltage VBAT is subjected to direct current conversion through the first power supply management module and is converted into the power supply suitable for a load wireless switching system, and the output V of the second power supply management moduleDD2Is connected with the anode of the hygrothermograph system. When the output V of the second LX01 voltage detection circuitOD2The output is high, the switch NMOS-Q1 is conducted, the output VBAT output voltage of the LX02 energy collecting circuit is converted into the voltage required by the load through the second power management module, the load system (namely, the hygrothermograph system) is activated, and the output V of the second LX01 voltage detection circuitOD2When the output is low, the switch NMOS-Q1 is turned off, and the power supply manages the output VDD2The output is 0V, and the hygrothermograph system is in a shutdown state, so that the standby power consumption of the hygrothermograph system is removed.
Fig. 3 is a logic timing diagram of a timing trigger system, which shows the output signals of an LX04 ultra-low power oscillator, the signals of a first output a and a second output b of a frequency divider are div _ a and div _ b,the NOR gate outputs a signal nor of OUT and a second LX01 voltage detection circuit outputs a signal VOD2The timing relationship between them. The frequency divider multiple in the utility model is 1/8, and divides the frequency of the signal output by the LX04 ultra-low power consumption oscillator. div _ b and div _ a are opposite in logic, and the rising edge and the falling edge of the signal div _ b are lengthened and smoothed by the delay circuit formed by the resistor R3 and the capacitor C2, so that the nor signal nor appears as a high-level pulse in the rising edge stage of div _ b. Output V of the second LX01 voltage detection circuitOD2The high level voltage of the nor signal is pulled up through the pull-up resistor, and the logic of the nor signal is consistent with that of the nor signal.
The load of the hygrothermograph comprises a low-power-consumption temperature and humidity sensor, a ZigBee module, a signal processing and controlling unit and a paper screen; when a NOR gate in the timing trigger system outputs high voltage, the load hygrothermograph system is activated, the hygrothermograph starts to measure temperature and humidity parameters and transmits the parameters to the signal processing and control module, the module controls the paper screen to display corresponding temperature and humidity readings and transmits the information to the binding gateway through the ZigBee module, and the paper screen can still have a display function under the condition that the power is not supplied, so that when the NOR gate outputs low level in a period, the load hygrothermograph system is shut down, the paper screen still displays, and normal reading of a user cannot be influenced.

Claims (9)

1. A battery-free hygrothermograph device is characterized by comprising an energy collecting system, a timing trigger system and a hygrothermograph system; the energy collection system comprises an optical energy collection converter, a first LX01 voltage detection circuit, an LX02 energy collection circuit, a first power management module, a pull-up resistor R1 and a super capacitor C1; input end V of the light energy collection converter and the first LX01 voltage detection circuitinConnected, the output V of the first LX01 voltage detection circuitOD1The output V of the first LX01 voltage detection circuit is connected with VBAT through a pull-up resistor R1OD1The enable end of the LX02 energy collecting circuit is connected; the output of the light energy harvesting converter is simultaneously connected to the input of the LX02 energy harvesting circuit, the output of LX02 energy harvesting circuit is VBAT,the output VBAT of the LX02 energy collecting circuit is connected with the energy storage super capacitor C1, the output VBAT of the LX02 energy collecting circuit is connected with the input of the first power supply management module, the output voltage of the first power supply management module supplies power for the timing trigger system, and the voltage output end of the timing trigger system supplies power for the hygrothermograph system.
2. The batteryless hygrothermograph arrangement according to claim 1, wherein the timing trigger system comprises an LX04 ultra low power oscillator, a logic gate, a frequency divider, a MOS switch, an RC delay circuit and a second power management module; the output of the oscillator LX04 is connected with the input of the frequency divider, and two output ends of the frequency divider are respectively connected with the logic gate and the RC delay circuit; the anode of the capacitor C2 is connected to the input of the logic gate, the output of which is connected to the input V of the second LX01 voltage detection circuitinConnecting;
output V of the second LX01 voltage detection circuitOD2The gate of the switch NMOS-Q1 is connected with the pull-up resistor R2, the drain of the switch NMOS-Q1 is connected with the output VBAT of the LX02 energy collecting circuit, and the source of the switch NMOS-Q1 is connected with the input V of the second power management moduleinConnected, output V of the second power management moduleDD2The negative pole of the capacitor C2 is grounded to provide stable voltage for the load hygrothermograph system.
3. The batteryless hygrothermograph apparatus according to claim 2, wherein the two output terminals of the frequency divider are a first output a and a second output b, and the first output a and the second output b have opposite logics, wherein the first output a is connected to the input interface a of the logic gate, and the second output b is connected to the RC delay circuit; the first LX01 voltage detection circuit is the same as the second LX01 voltage detection circuit, and the logic gate adopts a NOR gate.
4. The batteryless hygrothermograph apparatus of claim 2, wherein the power source interfaces of the oscillator, the frequency divider, and the logic gate are all connected to the voltage output V of the energy harvesting systemOD1And (4) connecting.
5. The battery-less thermo-hygrometer device according to claim 1, wherein the thermo-hygrometer system comprises a signal processing and control unit, a low power consumption thermo-hygrometer and a paper screen, wherein the temperature and humidity sensor is connected to an input of the signal processing and control module, and an output of the signal processing and control module is connected to the paper screen.
6. The battery-less thermo-hygrometer device according to claim 5, wherein a ZigBee module is connected to an output of the signal processing and control module.
7. The batteryless hygrothermograph apparatus according to claim 1, wherein the ground terminal of the LX01 voltage detection circuit is grounded, and the negative terminal of the super capacitor C1 is grounded.
8. The batteryless thermo-hygrometer arrangement according to claim 1, wherein the light energy collecting converter is a solar panel.
9. The batteryless hygrothermograph apparatus of claim 1, wherein the first LX01 voltage detection circuit comprises a high voltage monitoring circuit, a medium voltage monitoring circuit, and a low voltage monitoring circuit, the high voltage monitoring circuit having a VO(H)The output is connected with the control end of the medium voltage monitoring circuit and the V of the medium voltage monitoring circuitO(M)The output of the high-voltage monitoring circuit, the output of the medium-voltage monitoring circuit and the output of the low-voltage monitoring circuit are connected with the output V of the LX01 voltage monitoring circuitOD1。
CN202121566268.3U 2021-07-08 2021-07-08 Battery-free hygrothermograph device Active CN215865302U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121566268.3U CN215865302U (en) 2021-07-08 2021-07-08 Battery-free hygrothermograph device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121566268.3U CN215865302U (en) 2021-07-08 2021-07-08 Battery-free hygrothermograph device

Publications (1)

Publication Number Publication Date
CN215865302U true CN215865302U (en) 2022-02-18

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Application Number Title Priority Date Filing Date
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