Low-power-consumption standby circuit of mobile storage equipment

Abstract

The utility model provides a low-power-consumption standby circuit of mobile storage equipment. The low-power-consumption standby circuit comprises a switch tube, an MCU chip and a trigger unit. According to the application, the optocoupler is utilized to respond to the driving instruction signal of the MCU chip to the PWM chip, so that the corresponding trigger switch tube is switched on when the power generator needs to be triggered to operate to drive the mobile storage equipment to operate, and an electric path formed by the PMOS is connected to the energy supply end of the direct-current power supply to supply energy to the PWM chip. And when the motor driving output is not needed, the optocoupler can be directly triggered to turn off the electrical path of the PMOS tube through the driving instruction signal of the MCU chip to the PWM chip, so that the PWM chip and the motor are powered off in a unified manner, and the standby energy consumption of the system is reduced. Therefore, by directly turning off the PWM chip and the power supply feed-in mode of the motor, the consumption of the stored electric quantity in the standby process is effectively reduced, so that the standby duration of the mobile warehousing system is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of warehouse monitoring equipment, and in particular to a low-power standby circuit for mobile warehouse equipment. Background Art

[0002] With the development of intelligent warehousing systems, their storage capacity has increased year by year, and the complexity of equipment operation in the storage space has also gradually increased. For mobile storage equipment such as four-way shuttles and AGV forklifts, their battery energy storage capacity and equipment power consumption determine their operating time. For intelligent warehousing systems with larger storage spaces, although charging ports can be arranged on each floor of the storage space to facilitate the replenishment of power for the above-mentioned mobile storage equipment. However, the equipment cannot operate during charging, which will still cause a shortage of transportation capacity within the storage system.

[0003] Therefore, how to extend the operating time of each mobile storage equipment and reduce its power consumption under the hardware conditions of the existing warehousing system has gradually become one of the core issues in the development and iteration of intelligent warehousing systems. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the purpose of this application is to provide a low-power standby circuit for mobile storage equipment. This application uses a switch tube to adjust the current supply to the PWM chip and the motor according to the trigger signal of the MCU chip, thereby effectively reducing the standby energy consumption of the mobile storage equipment and extending its operating time.

[0005] To achieve the above-mentioned purpose, the present application provides a low-power standby circuit for mobile storage equipment, which is characterized by including: a switching tube, which is connected between the power supply end of the DC power supply and the motor drive system; an MCU chip, which is electrically connected to the motor drive system and the trigger unit at the same time; the trigger unit has a switching path, and the switching path is connected in series between the switching tube and the low level of the DC power supply.

[0006] Optionally, a low-power standby circuit for a mobile storage equipment as described above, wherein the switching tube is a PMOS tube, a source of which is connected to a DC power supply end, a current-limiting resistor is connected between the source and the gate, and a collector is connected to a motor drive system, wherein a switching path of a trigger unit is also connected in series with a bias resistor between the gate of the PMOS tube and the low level of the DC power supply.

[0007] Optionally, a low-power standby circuit for a mobile storage device as described above, wherein the trigger unit is an optocoupler, the optocoupler having a light-emitting diode and a switch path, the switch path is triggered to turn on or off by the light-emitting diode, and the light-emitting diode is connected in series to the output end of the MCU chip.

[0008] Optionally, a low-power standby circuit for a mobile storage device as described above, wherein the motor drive system includes a PWM chip and a motor connected in series, and the PWM chip is electrically connected to the MCU chip.

[0009] Optionally, a low-power standby circuit for a mobile storage device as described above, wherein the PWM chip is communicatively connected to the MCU chip, one input end of the PWM chip is connected to the collector of the PMOS tube, and the other input end of the PWM chip is connected to the low level of the DC power supply.

[0010] Optionally, a low-power standby circuit for a mobile storage device as described above, wherein the PMOS tube operates in a switching state, the PMOS tube is triggered by an optocoupler, and a conductive path and a closed path that can be switched between the PWM chip, the motor and the DC power supply end.

[0011] Optionally, a low-power standby circuit for a mobile storage equipment as described above is provided, wherein, in a conduction path, one input terminal of the PWM chip is connected to the DC power supply end through the collector of the PMOS tube, the switch path of the optocoupler and the other input terminal of the PWM chip are connected to the low level of the DC power supply, and the PWM chip is electrically connected to the motor to drive the motor to operate.

[0012] Optionally, a low-power standby circuit for a mobile storage device as described above is provided, wherein, when the path is closed, the input end of the PWM chip is connected to the low level of the DC power supply, the PWM chip cuts off the power supply, and there is no electrical signal between the PWM chip and the motor.

[0013] Optionally, a low-power standby circuit for a mobile storage device as described above, wherein the MCU chip is an STM32 U5 series Cortex-M33 ultra-low power MCU; the switch tube is a 3P06 SOT-23-3L; and the trigger unit is a CYPC357 transistor output optocoupler.

[0014] Optionally, a low-power standby circuit for a mobile storage device as described above, wherein the PWM chip is CR6850, and the motor is any one of a shelf lifting motor, a steering drive motor, and a travel drive motor of a four-way shuttle vehicle or a combination thereof.

[0015] Compared with the existing solutions, this application has the following technical effects:

[0016] The low-power standby circuit of the mobile storage equipment provided by the present application utilizes an optocoupler to respond to the driving command signal of the MCU chip to the PWM chip, thereby triggering the switch tube to turn on when it is necessary to trigger the motor to run and drive the mobile storage equipment to run, and connecting the electrical path formed by the PMOS to the DC power supply end to supply energy for the PWM chip. When the motor drive output is not required, the driving command signal of the MCU chip to the PWM chip can be directly used to trigger the optocoupler to turn off the electrical path of the PMOS tube, thereby cutting off the power to the PWM chip and the motor to reduce the standby energy consumption of the system. Therefore, the present application can effectively reduce the consumption of stored electricity during the standby process by directly cutting off the power supply of the PWM chip and the motor, thereby extending the standby time of the mobile storage system.

[0017] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0019] Figure 1 A low-power standby circuit for a mobile storage device according to the present application;

[0020] Figure 2 The invention relates to a four-way shuttle vehicle using the circuit.

[0021] In the figure, 1 represents the vehicle body frame; 2 represents the main rail driving wheel; 3 represents the sub-rail driving wheel; 4 represents the main rail wheel transmission shaft; 6 represents the sub-rail wheel transmission shaft; and M represents the motor. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application and are not used to limit the present application.

[0023] The meaning of "inside and outside" mentioned in this application refers to the body frame of the four-way shuttle itself. The direction from the mother rail driving wheel on the outside of the body frame to the internal MCU chip is inside, and the opposite is outside; it is not a specific limitation on the device mechanism of this application.

[0024] The meaning of "left and right" mentioned in this application refers to that when the user is facing the forward direction of the mobile storage equipment, the user's left is left and the user's right is right, rather than a specific limitation on the device mechanism of this application.

[0025] The term “connection” as used in this application may mean a direct connection between components or an indirect connection between components via other components.

[0026] The meanings of "up and down" in this application refer to that when the user is facing the forward direction of the mobile storage equipment, the direction from the track to the lifting of the shelf is up, and the direction from the bogie to the track system is down, rather than a specific limitation on the device mechanism of this application.

[0027] The low-power standby circuit of the mobile storage equipment provided in this application can be used Figure 2 In the four-way shuttle shown. The four-way shuttle is driven by the mother rail driving wheel 2 and the sub-rail driving wheel 3 arranged around the body frame 1, and runs along the mother rail or sub-rail in the three-dimensional storage shelf. Usually, the mother rail and sub-rail in the three-dimensional storage shelf are respectively arranged in the upper and lower planes. The four-way shuttle realizes the driving output by retracting the mother rail driving wheel 2 or the sub-rail driving wheel 3 into the body frame 1 or extending it downward to the corresponding track plane through the steering drive motor. When the travel drive motor drives the driving wheels in each direction through the mother rail wheel drive shaft 4 or the sub-rail wheel drive shaft 6 to move the four-way vehicle to the corresponding working position, the shelf lifting motor inside the body can lift the shelf accordingly to lift the goods off the track for easy handling; or lower the shelf accordingly to place the goods in the storage position on the corresponding track.

[0028] Each of the above-mentioned motors M can be Figure 1 The circuit structure shown drives the power supply, which includes:

[0029] The switch tube Q1 is connected between the energy supply end of the DC power supply and the PMW chip of the motor drive system;

[0030] MCU chip, the main control chip of the reusable four-way car can also be selected as the STM32 U5 series Cortex-M33 ultra-low power MCU as a separately set walking control chip as needed, and the control instruction output end of the MCU can be electrically connected to the motor drive system and the trigger unit U at the same time.

[0031] The motor drive system may include a drive circuit for a shelf lifting motor, a steering drive motor, and a travel drive motor composed of a PWM chip such as CR6850.

[0032] Thus, the switch path of the trigger unit U can be connected in series between the switch tube Q1 and the low level of the DC power supply. When the MCU chip outputs a control instruction to the PWM, the switch tube Q1 is synchronously triggered to turn on, thereby maintaining the DC power supply to the PWM and the motor; when the MCU chip stops outputting a control instruction to the PWM, the switch tube Q1 is synchronously triggered to turn off, thereby canceling the DC power supply to the PWM and the motor, reducing the energy consumption generated during the standby process of the PWM and the motor.

[0033] When the switch tube Q1 is selected as a 3P06 SOT-23-3L PMOS tube and the trigger unit U is a CYPC357 transistor output optocoupler:

[0034] The source of the PMOS tube can be directly connected to the DC power supply end, and a current-limiting resistor Rv is connected between the source and the gate. The collector of the PMOS tube can be connected to the motor drive system formed by the PWM chip. In order to achieve the response to the trigger unit, the gate of the PMOS tube is also connected to the low level of the DC power supply through a bias resistor Rg in series with the switch path in the optocoupler. The light-emitting diode in the optocoupler is connected in series to the output end of the MCU chip, and the switch path is turned on or off by triggering infrared light according to the control instructions of the MCU chip to PWM. In this way, the PWM chip connected in series and the feeding of the motor can be controlled by the PMOS tube. After obtaining the feeding, the PWM chip can output a driving signal to drive the motor to operate according to the control instructions of the MCU chip.

[0035] In this application, the PWM chip is connected to the MCU chip for communication, one input end of the PWM chip is connected to the collector of the PMOS tube, and the other input end of the PWM chip is connected to the low level of the DC power supply. When the PMOS tube works in the switching state, the PMOS tube is triggered by the optical coupler, and a switchable on path and off path are formed between the PWM chip, the motor and the DC power supply end.

[0036] In the conduction path, one input end of the PWM chip is connected to the DC power supply end through the collector of the PMOS tube, the switch path of the optocoupler and the other input end of the PWM chip are connected to the low level of the DC power supply, and the PWM chip is electrically connected to the motor to drive the motor;

[0037] In the closed path, the input end of the PWM chip is connected to the low level of the DC power supply, the PWM chip cuts off the power supply, and there is no electrical signal between the PWM chip and the motor.

[0038] The advantages of this application are:

[0039] Without increasing the power storage capacity of the power supply, the present application can, under the hardware conditions of the existing warehousing system, adjust the power supply to the motor drive circuit by triggering the on-off of the PMOS tube by the optocoupler, thereby reducing its standby power consumption in the non-driving state, extending the operating time of each mobile storage equipment, and reducing the non-working energy consumption of the overall mobile storage equipment, thereby extending the actual use time of the existing power storage capacity, reducing the charging frequency of the equipment, and thus improving the operating efficiency of the warehousing system.

[0040] Those skilled in the art can understand that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A low power standby circuit for mobile storage equipment, characterized in that: include: A switch tube (Q1) is connected between the energy supply end of the DC power supply and the motor drive system; The MCU chip is electrically connected to the motor drive system and the trigger unit (U); The trigger unit (U) has a switch path, and the switch path is connected in series between the switch tube (Q1) and the low level of the DC power supply.

2. The low power standby circuit of the mobile storage equipment according to claim 1, characterized in that: The switch tube (Q1) is a PMOS tube, whose source is connected to the DC power supply end, a current limiting resistor (Rv) is connected between the source and the gate, and a collector is connected to the motor drive system, wherein a switching path of the trigger unit (U) is also connected in series between the gate of the PMOS tube and the low level of the DC power supply through a bias resistor (Rg).

3. The low power standby circuit of the mobile storage equipment according to claim 1, characterized in that: The trigger unit (U) is an optical coupler, which has a light emitting diode and a switch path. The switch path is triggered to turn on or off by the light emitting diode, and the light emitting diode is connected in series to the output end of the MCU chip.

4. The low power consumption standby circuit of the mobile storage equipment as claimed in claim 2, characterized in that: The motor drive system comprises a PWM chip and a motor connected in series, and the PWM chip is electrically connected to the MCU chip.

5. The low power consumption standby circuit of the mobile storage equipment as claimed in claim 4, characterized in that: The PWM chip is connected to the MCU chip for communication, one input end of the PWM chip is connected to the collector of the PMOS tube, and the other input end of the PWM chip is connected to the low level of the DC power supply.

6. The low power consumption standby circuit of the mobile storage equipment as claimed in claim 5, characterized in that: The PMOS tube works in a switching state, and the PMOS tube is triggered by an optical coupler to form a switchable on path and a switch-off path between the PWM chip, the motor and the DC power supply end.

7. The low power consumption standby circuit of the mobile storage equipment as claimed in claim 6, characterized in that: In the conduction path, one input end of the PWM chip is connected to the DC power supply end through the collector of the PMOS tube, the switch path of the optocoupler and the other input end of the PWM chip are connected to the low level of the DC power supply, and the PWM chip is electrically connected to the motor to drive the motor to operate.

8. The low power consumption standby circuit of the mobile storage equipment as claimed in claim 6, characterized in that: When the path is closed, the input end of the PWM chip is connected to the low level of the DC power supply, the PWM chip cuts off the power supply, and there is no electrical signal between the PWM chip and the motor.

9. The low power consumption standby circuit of the mobile storage equipment according to claim 1, characterized in that: The MCU chip is the STM32 U5 series Cortex-M33 ultra-low power MCU; the switch tube (Q1) is 3P06 SOT-23-3L; the trigger unit (U) is a CYPC357 transistor output optocoupler.

10. The low power consumption standby circuit of the mobile storage equipment according to claim 4, characterized in that: The PWM chip is CR6850, and the motor is any one or a combination of a shelf lifting motor, a steering drive motor, and a travel drive motor of a four-way shuttle.

Images