CN216933069U - Voltage detection circuit and cleaning robot base station - Google Patents
Voltage detection circuit and cleaning robot base station Download PDFInfo
- Publication number
- CN216933069U CN216933069U CN202123336675.8U CN202123336675U CN216933069U CN 216933069 U CN216933069 U CN 216933069U CN 202123336675 U CN202123336675 U CN 202123336675U CN 216933069 U CN216933069 U CN 216933069U
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- signal
- power supply
- voltage detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The application relates to a voltage detection circuit and a cleaning robot base station, wherein the circuit is connected with a first power supply through an input end of a current conditioning circuit, an isolation circuit is connected with a processor, the current conditioning circuit is configured to receive an input signal of the first power supply, condition the input signal and output a conditioned signal; the switching circuit is configured to control the on-off of the isolation circuit according to the conditioned signal; based on switching circuit's control, first level signal is transmitted to the treater when isolating circuit switches on, transmits second level signal to the treater when isolating circuit breaks off, and then the treater distinguishes power supply's high voltage or low-voltage according to the received different level signal, and then can realize the voltage detection at the cleaning robot basic station, has reduced the overall cost, and detection circuitry detects alternating voltage's stability height, avoids causing troubles such as main control board burns out.
Description
Technical Field
The application relates to the technical field of cleaning robots, in particular to a voltage detection circuit and a cleaning robot base station.
Background
Along with the expansion of the application range of the cleaning robot and the abundance of the functions of the base station, the requirements of the base station of the cleaning robot are continuously expanded, so that the oriented market is complicated, different areas have the possibility of power supply of various alternating voltages such as 100V, 110V, 220V, 230V, 240V and the like, the base station of the cleaning robot adopts an alternating current series motor to realize the dust collection function, so that the risk of unmatched use of the power supply voltage of the motor exists, and the motor is burnt out due to high-voltage input in the use process, and the dust collection requirement cannot be ensured due to low-voltage input. In order to solve the problem caused by the mismatching of the motor supply voltage, it is important to distinguish the input low voltage of 100V/110V from the input high voltage of 220V/230V/240V.
In the implementation process, the inventor finds that at least the following problems exist in the prior art: in the existing voltage detection mode applied to a cleaning robot base station, high-cost hardware is generally adopted to realize alternating voltage differentiation, so that the overall cost is high; if low-cost hardware is adopted for alternating voltage discrimination, the stability of the detection circuit for detecting the alternating voltage is poor, and faults such as burning of the main control board are easily caused.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to adopt high-cost hardware to realize the ac voltage differentiation in the conventional voltage detection method applied to the base station of the cleaning robot, which is likely to result in high overall cost; if low-cost hardware is adopted for alternating voltage distinguishing, the detection circuit has poor stability in detecting the alternating voltage, and faults such as burning of a main control board are easily caused.
In order to achieve the above object, an embodiment of the present invention provides a voltage detection circuit, including:
the input end of the current conditioning circuit is used for being connected with a first power supply, and the current conditioning circuit is configured to receive an input signal of the first power supply, condition the input signal and output a conditioned signal;
the isolation circuit is used for being connected with the processor and is configured to transmit a first level signal to the processor when the isolation circuit is switched on and transmit a second level signal to the processor when the isolation circuit is switched off;
and the switching circuit is configured to control the on-off of the isolation circuit according to the conditioned signal.
In one embodiment, the voltage detection circuit further comprises a current limiting circuit connected between the current conditioning circuit and the isolation circuit;
the current limiting circuit is configured to receive the conditioned signal, limit the current of the conditioned signal, and output the current-limited signal to the isolation circuit.
In one embodiment, the isolation circuit comprises an optical coupling isolation device and a first resistor;
a first pin of the optical coupling isolation device is connected with the current limiting circuit, a second pin of the optical coupling isolation device is connected with the switching circuit, a fourth pin of the optical coupling isolation device is connected with the processor, and a third pin of the optical coupling isolation device is connected with the ground wire; the first end of the first resistor is connected with the fourth pin of the optical coupling isolation device, and the second end of the first resistor is connected with the second power supply.
In one embodiment, the current limiting circuit includes a second resistor;
the first end of the second resistor is connected with the current conditioning circuit, and the second end of the second resistor is connected with the first pin of the optical coupling isolation device.
In one embodiment, the switching circuit includes a zener diode;
the anode of the voltage stabilizing diode is connected with the current conditioning circuit, and the cathode of the voltage stabilizing diode is connected with the second pin of the optical coupling isolation device.
In one embodiment, the current conditioning circuit comprises a rectifying module and a filtering module;
the input end of the rectification module is connected with a first power supply, the output end of the rectification module is connected with the filtering module, and the filtering module is respectively connected with the switching circuit and the current limiting circuit.
In one embodiment, the rectifier module is a full-bridge rectifier module or a half-bridge rectifier module.
In one embodiment, the filter module comprises a filter capacitor;
the positive pole of the filter capacitor is connected with the rectification module, and the negative pole of the filter capacitor is connected with the ground wire.
In one embodiment, the voltage detection circuit further comprises a circuit substrate; the current conditioning circuit, the isolation circuit and the switching circuit are respectively arranged on the circuit substrate.
On the other hand, the embodiment of the utility model also provides a cleaning robot base station, which comprises the cleaning robot base station and the voltage detection circuit arranged on the cleaning robot base station main body.
One of the above technical solutions has the following advantages and beneficial effects:
in each embodiment of the voltage detection circuit, the input end of the current conditioning circuit is connected to the first power supply, the isolation circuit is connected to the processor, and the current conditioning circuit is configured to receive an input signal of the first power supply, condition the input signal, and output a conditioned signal; the switching circuit is configured to control the on-off of the isolation circuit according to the conditioned signal; based on the control of the switching circuit, the isolation circuit transmits a first level signal to the processor when being switched on, transmits a second level signal to the processor when being switched off, and then the processor distinguishes the high voltage or the low voltage of the power supply according to the received different level signals (the first level signal or the second level signal), thereby realizing the voltage detection of the cleaning robot base station. This application adopts hardware circuits such as low-cost isolating circuit and switching circuit, can realize carrying out the high low-voltage differentiation to the alternating voltage who inserts the cleaning machines people basic station, has reduced the overall cost, and detection circuitry detects alternating voltage's stability height, avoids causing troubles such as master control board burns out.
Drawings
FIG. 1 is a schematic diagram of a first circuit structure of a conventional voltage detection circuit;
FIG. 2 is a diagram illustrating a second circuit structure of a conventional voltage detection circuit;
FIG. 3 is a diagram illustrating a first circuit structure of a voltage detection circuit according to an embodiment;
FIG. 4 is a diagram illustrating a second circuit structure of the voltage detection circuit according to an embodiment;
FIG. 5 is a schematic diagram of a third circuit structure of the voltage detection circuit in one embodiment;
FIG. 6 is a diagram illustrating a fourth circuit configuration of the voltage detection circuit according to an embodiment;
FIG. 7 is a graph illustrating AC voltage versus collected voltage in one embodiment.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate. In addition, the term "plurality" shall mean two as well as more than two.
The cleaning robot base station is a kit used in cooperation with a cleaning robot, which is developed from a cleaning robot charging stand. The original base station only has the function of charging the cleaning robot, gradually integrates the function of recovering dust collection along with the development of the technology, and the latest base station also has multiple functions of cleaning mops, drying the mops, supplementing water to a water tank, even purifying air and the like on the basis. The intellectualization and the automation degree of the cleaning robot are higher and higher due to the abundance of functions, so that the cleaning robot is popular in domestic and foreign markets. However, in different areas, there are differences in power supply of various ac voltages, such as 100V, 110V, 220V, 230V, and 240V, and the cleaning robot base station itself uses the ac series motor to implement the dust collecting function, so there is a risk that the power supply voltage of the motor is not matched in use, and the motor is burned out due to high voltage input during use, and the dust collecting requirement cannot be guaranteed due to low voltage input. In order to solve the problem caused by the mismatching of the power supply voltage of the motor, it is important to distinguish the input low voltage of 100V/110V from the input high voltage of 220V/230V/240V.
In the existing voltage detection mode applied to a cleaning robot base station, there are generally 2 schemes for alternating voltage differentiation as follows: as shown in fig. 1, the transformer scheme is adopted, the circuit is reliable, the circuit design is simple, detection and distinguishing of alternating voltage can be completed while strong and weak current isolation is achieved, but the cost is high, so that the alternating voltage detection and distinguishing are achieved by adopting the scheme in the base station, and the hardware cost for meeting the requirements is too high. As shown in fig. 2, the precise resistor voltage division sampling scheme is to rectify and filter the input ac power, divide the voltage by using a precise resistor, and perform AD detection and sampling by using an MCU to realize ac voltage detection. The scheme is low in cost, but strong and weak current of the scheme is not isolated, so that the safety risk exists, the scheme is only suitable for pure voltage detection instruments, and the master control board can be burnt out when the base station uses the scheme.
In order to solve the problem that the existing voltage detection mode applied to a cleaning robot base station generally adopts high-cost hardware to realize alternating voltage differentiation, so that the overall cost is high; if low-cost hardware is used to distinguish the ac voltages, the detection circuit has poor stability in detecting the ac voltages, which is likely to cause a problem of a fault such as burning of the main control board, and in one embodiment, as shown in fig. 3, a voltage detection circuit is provided, which includes a current conditioning circuit 100, an isolation circuit 200, and a switching circuit 300.
The input end of the current conditioning circuit 100 is used for connecting a first power supply, and the current conditioning circuit 100 is configured to receive an input signal of the first power supply, condition the input signal, and output a conditioned signal; the isolation circuit 200 is used for connecting a processor, the isolation circuit 200 is configured to transmit a first level signal to the processor when the isolation circuit 200 is turned on, and transmit a second level signal to the processor when the isolation circuit 200 is turned off; the switching circuit 300 is configured to control the switching of the isolation circuit 200 according to the conditioned signal.
The current conditioning circuit 100 may be configured to perform current conditioning on an input electrical signal, and further output a conditioned signal. For example, the current conditioning circuit 100 may perform conditioning processing such as rectification and filtering on the input electrical signal, and then output a rectified and filtered signal. The first power supply may be an ac power supply, for example, the power supply voltage of the first power supply may be, but is not limited to, 100V, 110V, 220V, 230V, 240V, and the like. The power supply voltage of the first power supply may be divided into a first power supply with a high power supply voltage and a first power supply with a low power supply voltage, for example, a first power supply with a power supply voltage of 100V and a first power supply with a power supply voltage of 110V, which are lower than 200V, are divided into a first power supply with a low power supply voltage; A220V first power supply with a power supply voltage higher than 200V, a 230V first power supply, a 240V first power supply and the like are divided into first power supplies with high power supply voltages.
The isolation circuit 200 may be a photoelectric isolation circuit 200, and the isolation circuit 200 may be used to isolate strong current from weak current, so as to prevent interference from the strong current side to the weak current side in the circuit. The first level signal may be a low level signal, for example, when the isolation circuit 200 is turned on, the first level signal is pulled down to a low level. The second level signal may be a high level signal, for example, the second level signal is pulled high when the isolation circuit 200 is open. Illustratively, when the isolation circuit 200 is turned on, the first level signal received by the processor is at a low level, and the power supply voltage of the first power supply that is connected at this time is a high power supply voltage. When the isolation circuit 200 is disconnected, the second level signal received by the processor is at a high level, and the power supply voltage of the first power supply connected at this time is a low power supply voltage.
The switching circuit 300 may be used to control the switching of the isolation circuit 200. It should be noted that the switching circuit 300 can control the on/off of the isolation circuit 200 through the characteristics of the hardware circuit itself. For example, when the voltage amplitude of the conditioned signal received by the switching circuit 300 is greater than the voltage threshold of the device characteristic of the switching circuit, the isolation circuit 200 is turned on; when the voltage amplitude of the conditioned signal received by the switching circuit 300 is smaller than the voltage threshold of the device characteristic, the isolation circuit 200 is turned off.
Specifically, the input end of the current conditioning circuit 100 is connected to a first power supply, and then an input signal of the first power supply is transmitted to the current conditioning circuit 100, and the current conditioning circuit 100 receives the input signal of the first power supply, conditions the input signal, and then outputs a conditioned signal. Based on that the isolation circuit 200 is connected with the processor, the switching circuit 300 is respectively connected with the current conditioning circuit 100 and the isolation circuit 200, and when the current conditioning circuit 100 conditions the received input signal, the conditioned signal is output; the switching circuit 300 receives the conditioned signal, and if the voltage amplitude of the conditioned signal is greater than the device characteristic requirement of the switching circuit 300, the isolation circuit 200 is turned on, and the processor receives the first level signal (low level), so as to determine that the input signal of the accessed power supply is a high-voltage signal. If the voltage amplitude of the conditioned signal is smaller than the device characteristic requirement of the switching circuit 300, the isolation circuit 200 is turned off, and the processor receives the second level signal (high level), so that the input signal of the accessed power supply is judged to be a low-voltage signal, and the high alternating voltage and the low current voltage are distinguished.
In the above embodiment, the input end of the current conditioning circuit 100 is connected to the first power supply, the isolation circuit 200 is connected to the processor, and the current conditioning circuit 100 is configured to receive an input signal of the first power supply, condition the input signal, and output a conditioned signal; the switching circuit 300 is configured to control the on/off of the isolation circuit 200 according to the conditioned signal; based on the control of the switching circuit 300, the isolation circuit 200 transmits a first level signal to the processor when being turned on, transmits a second level signal to the processor when being turned off, and then the processor distinguishes the high voltage or the low voltage of the power supply according to the received different level signals (the first level signal or the second level signal), thereby being capable of realizing the voltage detection at the cleaning robot base station. This application adopts hardware circuits such as low-cost isolating circuit 200 and switching circuit 300, can realize carrying out the high low-voltage differentiation to the alternating voltage who inserts the cleaning machines people basic station, has reduced the overall cost, and detection circuitry detects alternating voltage's stability height, avoids causing troubles such as main control board burns out.
In one embodiment, as shown in fig. 4, the voltage detection circuit further includes a current limiting circuit 400 connected between the current conditioning circuit 100 and the isolation circuit 200; the current limiting circuit 400 is configured to receive the conditioned signal, limit the current of the conditioned signal, and output the limited current signal to the isolation circuit 200.
The current limiting circuit 400 may be used to limit the current of the conditioned signal, so as to prevent the conditioned signal from having too large current, which may cause the overheating and burning of the isolation circuit 200 after being directly input into the isolation circuit 200.
A current limiting based circuit 400 is connected between the current conditioning circuit 100 and the isolation circuit 200; the current limiting circuit 400 receives the conditioned signal, limits the conditioned signal, and outputs the current-limited signal to the isolation circuit 200, thereby ensuring that the current flowing into the isolation circuit 200 does not exceed the rated current of the isolation circuit 200 during normal operation, and preventing the isolation circuit 200 from being burnt due to overheating caused by overlarge current.
In one embodiment, as shown in fig. 5, the current conditioning circuit 100 includes a rectifying module 110 and a filtering module 120; the input end of the rectifying module 110 is connected to the first power supply, the output end of the rectifying module 110 is connected to the filtering module 120, and the filtering module 120 is connected to the switching circuit 300 and the current limiting circuit 400, respectively.
The rectifying module 110 may be configured to rectify an ac input signal of the power supply and output a dc voltage signal. In one example, the rectifier module 110 is a full-bridge rectifier module 112110 (shown in fig. 6) or a half-bridge rectifier module 110. The filtering module 120 may be configured to filter the dc voltage signal transmitted by the rectifying module 110, and output a filtered signal, i.e., a conditioned signal. In one example, as shown in fig. 6, the filtering module 120 includes a filtering capacitor 122; the positive electrode of the filter capacitor 122 is connected to the rectifier module 110, and the negative electrode of the filter capacitor 122 is connected to the ground.
The input end of the rectifying module 110 is connected with a first power supply, the output end of the rectifying module 110 is connected with the filtering module 120, the filtering module 120 is respectively connected with the switching circuit 300 and the current limiting circuit 400, and further, an input signal of the first power supply is transmitted to the rectifying module 110, and the rectifying module 110 receives the input signal of the first power supply, rectifies the input signal and outputs a direct-current voltage signal. Then, the filtering module 120 performs filtering processing on the dc voltage signal, and outputs a conditioned signal (i.e., a filtered signal). The switching circuit 300 receives the conditioned signal, controls the on-off of the isolation circuit 200 according to the voltage amplitude of the conditioned signal, and based on the on-off of the isolation circuit 200, the processor receives different level signals (a first level signal or a second level signal), and then the processor distinguishes the high voltage or the low voltage of the power supply according to the received different level signals (the first level signal or the second level signal), so that the voltage detection of the cleaning robot base station can be realized, and the high voltage and the low voltage of the alternating voltage accessed to the cleaning robot base station can be distinguished.
In one embodiment, as shown in fig. 6, the isolation circuit 200 includes a light coupling isolation device 210 and a first resistor 220. A first pin of the optical coupling isolation device 210 is connected with the current limiting circuit 400, a second pin of the optical coupling isolation device 210 is connected with the switching circuit 300, a fourth pin of the optical coupling isolation device 210 is connected with the processor, and a third pin of the optical coupling isolation device 210 is connected with the ground wire; a first end of the first resistor 220 is connected to the fourth pin of the opto-isolator device 210, and a second end of the first resistor 220 is connected to the second power supply.
The interior of the optical coupling isolation device 210 can be divided into a light emitting diode and a phototriode. A first pin of the optocoupler isolation device 210 corresponds to an anode of the light emitting diode, a second pin of the optocoupler isolation device 210 corresponds to a cathode of the light emitting diode, a third pin of the optocoupler isolation device 210 corresponds to an emitter of the phototransistor, and a fourth pin of the optocoupler isolation device 210 corresponds to a collector of the phototransistor.
The opto-isolator device 210 may be turned on based on the corresponding conduction of the light sensitive triode when the light emitting diode inside the device is turned on. When the internal light-emitting diode is not switched on, the corresponding change of the output signal is realized by the corresponding cut-off characteristic of the photosensitive triode, and meanwhile, due to the physical characteristic of the optical coupler, the signals are transmitted, and meanwhile, strong current and weak current are isolated, so that the safety is higher. The first resistor 220 is a pull-up resistor, and the first resistor 220 can be used to pull up the second level signal to the voltage of the second power supply. For example, if the second power supply is a direct current voltage source (3.3V), when the switching circuit 300 receives the conditioned signal, if the voltage amplitude of the conditioned signal is greater than the device characteristic requirement of the switching circuit 300, the opto-isolator device 210 is turned on, and the processor receives the first level signal (low level), so as to determine that the input signal of the accessed power supply is a high voltage signal. If the voltage amplitude of the conditioned signal is smaller than the device characteristic requirement of the switching circuit 300, the optical coupling isolation device 210 is disconnected, and then the processor receives a second level signal (high level), so that the input signal of the accessed power supply is judged to be a low-voltage signal, and the high alternating voltage and the low current voltage are distinguished, and in addition, based on the physical isolation characteristic of the optical coupling isolation device 210, in the process of completing the voltage detection, the isolation of strong current and weak current is ensured, so that the safety and the stability of the whole hardware system are ensured.
In one example, as shown in fig. 6, the current limiting circuit 400 includes a second resistor 410; a first end of the second resistor 410 is connected to the current conditioning circuit 100, and a second end of the second resistor 410 is connected to the first pin of the opto-isolator device 210.
The second resistor 410 is a current limiting resistor. The second resistor 410 is connected in series with the optical coupling isolation device 210 to ensure that the current flowing into the optical coupling isolation device 210 does not exceed the rated current of the normal operation of the optical coupling isolation device 210, and prevent the optical coupling isolation device 210 from being burnt out due to excessive current.
In one embodiment, as shown in fig. 6, the switching circuit 300 includes a zener diode 310; the anode of the zener diode 310 is connected to the current conditioning circuit 100, and the cathode of the zener diode 310 is connected to the second pin of the opto-isolator device 210.
Wherein, the zener diode 310 is a reverse breakdown recoverable zener diode 310. Based on the characteristics that the zener diode 310 is reversely cut off when the voltage at two ends of the zener diode is lower than the reverse breakdown voltage, and the voltage at two ends of the zener diode is higher than the reverse breakdown voltage, the reverse breakdown voltage of the zener diode 310 is higher than the reverse breakdown voltage of the zener diode 310 after the input alternating-current high-voltage (220V/230V/240V) rectification filtering is realized, at the moment, the zener diode 310 is reversely broken down, the optical coupling isolation device 210 is switched on, and the first level signal is pulled down to be a low level, so that the input signal of the accessed power supply is judged to be a high-voltage signal. When the input is alternating low voltage (100V/110V) rectification filtering, the reverse breakdown voltage of the Zener diode 310 is smaller than, at the moment, the Zener diode 310 is cut off in the reverse direction, the optical coupling isolation device 210 is turned off, and the second level signal is pulled high to be high level, so that the input signal of the accessed power supply is judged to be a low voltage signal, and the high alternating voltage and the low current voltage are distinguished based on the reverse breakdown and cut-off characteristics of the Zener diode 310.
It should be noted that AC _ L and AC _ N in fig. 6 denote AC input terminals of the first power supply. VCC represents the dc voltage of the second power supply.
In one embodiment, the voltage detection circuit further includes a circuit substrate; the current conditioning circuit 100, the isolation circuit 200, and the switching circuit 300 are disposed on the circuit substrate, respectively. The circuit substrate may be, but not limited to, a single-layer PCB or a double-layer PCB.
In one example, as shown in fig. 7, a graph of an ac voltage input by the first power supply and a level voltage (a first level signal or a second level signal) collected by the processor is shown. The X axis is an input alternating current voltage input by the first power supply, and the Y axis is a level voltage acquired by the processor.
In the above-mentioned embodiment, adopt hardware devices such as low-cost opto-isolator and zener diode, can realize carrying out high low-voltage differentiation to the alternating voltage who inserts the cleaning machines people basic station, reduced the overall cost, and detection circuitry detects alternating voltage's stability height, avoid causing main control board troubles such as burning out. The design circuit of the application is simple, the cost is low, the pin resources of the main control MCU are very few, and the pin resources can be obtained by common GPIO pins.
In one embodiment, there is also provided a cleaning robot base station comprising a cleaning robot base station, and a voltage detection circuit according to any one of the preceding claims provided on a cleaning robot base station main body.
Specifically, the input end of the current conditioning circuit is connected with a first power supply, the isolation circuit is connected with the processor, and the current conditioning circuit is configured to receive an input signal of the first power supply, condition the input signal and output a conditioned signal; the switching circuit is configured to control the on-off of the isolation circuit according to the conditioned signal; based on the control of the switching circuit, the isolation circuit transmits a first level signal to the processor when being switched on, transmits a second level signal to the processor when being switched off, and then the processor distinguishes the high voltage or the low voltage of the power supply according to the received different level signals (the first level signal or the second level signal), thereby realizing the voltage detection of the cleaning robot base station.
In the above embodiment, a voltage detection circuit is added to hardware, a reverse breakdown characteristic of a high-voltage regulator diode is utilized, and at the same time, optical coupling isolation is adopted to output a first level signal or a second level signal, a processor processes the level signals to identify whether a high-voltage (220V/230V/240V) input or a low-voltage (100V/110V) input, and then the processor can identify the alternating voltage detection by adopting the existing computer program, so as to control whether the voltage output to the motor is started, thereby ensuring that the nominal working voltage of the motor is matched with the supply voltage, avoiding that the motor is burnt out due to the high-voltage input in the use process, the dust collection requirement cannot be ensured due to the low-voltage input, and simultaneously reducing the overall cost, and the detection circuit has high stability of detecting the alternating voltage.
It should be noted that, the present application may be loaded in the processor in advance by using an existing computer program, so as to implement the acquisition, transmission and processing of data, and implement the distinction of the level sizes of the first level signal and the second level signal. In addition, the main control module of the application can also adopt the existing components such as a comparator, a collector and a switch element to realize the collection, transmission and processing of data and realize the level size differentiation of the first level signal and the second level signal. The comparison of the level magnitudes of the first level signal and the second level signal may be realized by a comparator, for example.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A voltage detection circuit, comprising:
the input end of the current conditioning circuit is used for being connected with a first power supply, and the current conditioning circuit is configured to receive an input signal of the first power supply, condition the input signal and output a conditioned signal;
the isolation circuit is used for being connected with a processor and is configured to transmit a first level signal to the processor when the isolation circuit is conducted and transmit a second level signal to the processor when the isolation circuit is disconnected;
a switching circuit configured to control the isolation circuit to be switched on and off according to the conditioned signal.
2. The voltage detection circuit of claim 1, further comprising a current limiting circuit connected between the current conditioning circuit and the isolation circuit;
the current limiting circuit is configured to receive the conditioned signal, limit a current of the conditioned signal, and output a current-limited signal to the isolation circuit.
3. The voltage detection circuit of claim 2, wherein the isolation circuit comprises an optically coupled isolation device and a first resistor;
a first pin of the optical coupling isolation device is connected with the current limiting circuit, a second pin of the optical coupling isolation device is connected with the switching circuit, a fourth pin of the optical coupling isolation device is connected with the processor, and a third pin of the optical coupling isolation device is connected with a ground wire; the first end of the first resistor is connected with a fourth pin of the optical coupler isolation device, and the second end of the first resistor is connected with a second power supply.
4. The voltage detection circuit of claim 3, wherein the current limiting circuit comprises a second resistor;
the first end of the second resistor is connected with the current conditioning circuit, and the second end of the second resistor is connected with the first pin of the optical coupling isolation device.
5. The voltage detection circuit of claim 4, wherein the switching circuit comprises a zener diode;
and the anode of the voltage stabilizing diode is connected with the current conditioning circuit, and the cathode of the voltage stabilizing diode is connected with the second pin of the optical coupling isolating device.
6. The voltage detection circuit of claim 2, wherein the current conditioning circuit comprises a rectification module and a filtering module;
the input end of the rectification module is connected with the first power supply, the output end of the rectification module is connected with the filtering module, and the filtering module is respectively connected with the switching circuit and the current limiting circuit.
7. The voltage detection circuit of claim 6, wherein the rectifier module is a full-bridge rectifier module or a half-bridge rectifier module.
8. The voltage detection circuit of claim 6, wherein the filtering module comprises a filtering capacitor;
the positive pole of the filter capacitor is connected with the rectifying module, and the negative pole of the filter capacitor is connected with the ground wire.
9. The voltage detection circuit of claim 1, further comprising a circuit substrate; the current conditioning circuit, the isolation circuit and the switching circuit are respectively arranged on the circuit substrate.
10. A cleaning robot base station characterized by comprising a cleaning robot base station main body, and the voltage detection circuit according to any one of claims 1 to 9 provided on the cleaning robot base station main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123336675.8U CN216933069U (en) | 2021-12-27 | 2021-12-27 | Voltage detection circuit and cleaning robot base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123336675.8U CN216933069U (en) | 2021-12-27 | 2021-12-27 | Voltage detection circuit and cleaning robot base station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216933069U true CN216933069U (en) | 2022-07-12 |
Family
ID=82312771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123336675.8U Active CN216933069U (en) | 2021-12-27 | 2021-12-27 | Voltage detection circuit and cleaning robot base station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216933069U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117502974A (en) * | 2024-01-08 | 2024-02-06 | 九阳股份有限公司 | Power-assisted control method of surface cleaning device |
-
2021
- 2021-12-27 CN CN202123336675.8U patent/CN216933069U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117502974A (en) * | 2024-01-08 | 2024-02-06 | 九阳股份有限公司 | Power-assisted control method of surface cleaning device |
| CN117502974B (en) * | 2024-01-08 | 2024-03-22 | 九阳股份有限公司 | Power-assisted control method of surface cleaning device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109792217A (en) | Intelligent control circuit, charger, earth leakage protective device and intelligent socket | |
| CN105832247A (en) | Vacuum cleaner | |
| CN211508931U (en) | Power supply identification conversion circuit and air conditioner | |
| CN216933069U (en) | Voltage detection circuit and cleaning robot base station | |
| CN109041373A (en) | Flash switch detection circuit and Intelligent lamp | |
| CN213027533U (en) | Cigarette machine equipment and cigarette machine device | |
| CN212008740U (en) | Power failure detection device | |
| US8797696B2 (en) | Current leakage protection circuit, power socket and electronic device using same | |
| CN106787048B (en) | Charger with function of automatically identifying input voltage | |
| CN206331032U (en) | A kind of alternating current-direct current input voltage change detection circuit | |
| CN209946327U (en) | Detection circuit of relay contact and power supply device | |
| CN110970992A (en) | Dual-power switching device | |
| CN214310827U (en) | Grounding state detection circuit and electrical equipment | |
| CN210093113U (en) | Suction control device for charging relay of frequency converter | |
| CN209946325U (en) | Double-control switch detection circuit and device | |
| CN211529816U (en) | Automatic change-over switch position signal detection circuit and automatic change-over switch | |
| CN206595751U (en) | Possesses the charger of automatic identification input voltage function | |
| CN210608614U (en) | Low-frequency charging circuit and charging equipment with double voltage input automatic switching functions | |
| CN214045172U (en) | Air conditioner power supply switching circuit and air conditioner | |
| CN220865233U (en) | Charging and discharging equipment | |
| CN219496621U (en) | Detection circuit applied to charging device and charging device | |
| CN206237177U (en) | A kind of power supply adaptor of charging control circuit and safety | |
| CN217956295U (en) | Power board with function of small night lamp | |
| CN218956671U (en) | Isolation detection circuit and control board for alternating current input voltage of commercial power | |
| CN114992806B (en) | Zero-live wire line sequence conditioning device of air conditioner and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |