A power supply circuit and a machine vision device

Abstract

The utility model discloses a power supply circuit, including control module, execution module, voltage conversion module, at least one switch module, input, output and at least one acquisition module, the switch module includes first output and second output, voltage conversion module is used to carry out voltage conversion processing to the external power signal, each acquisition module is used to gather corresponding power supply circuit operating parameter and gathers data through corresponding output output, and control module is used to receive the acquisition data and carries out data comparison with acquisition data and preset data and controls the input of each switch module and the first output of this switch module and one of the second output of this switch module and is switched on based on the comparison result, the execution module is used to correct the working condition of power supply circuit according to the switch on state of each switch module. The utility model also provides a kind of machine vision equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to power supply technical field especially relates to a power supply circuit and a machine vision equipment including the power supply circuit. BACKGROUND

[0002] In industrial production and life, many scenes will use image acquisition equipment. For example, in order to detect the defects of industrial objects, it is necessary to use equipment such as a profilometer and an industrial camera. In the medical detection field, a laser polariscope may be used.

[0003] The working environment of the machine vision equipment is complex, and the precision and service life of the machine vision equipment are greatly affected. Therefore, how to improve the precision and service life of the machine vision equipment has become a technical problem to be solved in the field. UTILITY MODEL CONTENT

[0004] The utility model aims at solving one of the technical problems in the related art to some extent. To this end, the utility model provides a power supply circuit and a machine vision equipment including the power supply circuit.

[0005] As a first aspect of the utility model, a power supply circuit is provided, which includes a control module, an execution module, a voltage conversion module, at least one switch module, an input end for receiving an external power signal, an output end for supplying power to a device main body, and at least one acquisition module. The voltage conversion module and the switch module are connected in series between the input end and the output end. The switch module includes a first output end and a second output end,

[0006] The voltage conversion module is used for voltage conversion processing of the external power signal.

[0007] Each acquisition module is used for acquiring corresponding power supply circuit working parameters and outputting acquisition data through a corresponding output end. The acquisition module corresponds to the switch module one by one.

[0008] The control module is electrically connected in the power supply circuit, and the control module is used for receiving the acquisition data and comparing the acquisition data with preset data, and then controlling one of the first output end of each switch module and the second output end of the switch module to be turned on based on the comparison result.

[0009] The execution module is used for correcting the working state of the power supply circuit according to the conduction state of each switch module, so as to adjust the voltage output by the voltage conversion module through the output end of the power supply circuit to a set voltage range.

[0010] Optionally, an input end of the control module is electrically connected with an output end of each of the acquisition modules, each output end of the control module is electrically connected with a control end of each switch module, the control module is configured to receive the acquisition data, perform data comparison between the acquisition data and preset data, generate a control signal based on a comparison result, and output the control signal through the output end of the control module, the control signal being configured to control the input end of the corresponding switch module to be conductive with one of the first output end of the switch module and the second output end of the switch module.

[0011] Optionally, the execution module includes at least one execution module, the execution module corresponding to one of the acquisition modules, the execution module matching a type of the power supply circuit operating parameter acquired by the corresponding acquisition module, an input end of the execution module being electrically connected with the first output end of the corresponding switch module, and an output end of the execution module being electrically connected with the second output end of the corresponding switch module, so that the working state of the power supply circuit in the case that the input end of the switch module is conductive with the first output end of the switch module is different from the working state of the power supply circuit in the case that the input end of the switch module is conductive with the second output end of the switch module.

[0012] Optionally, the acquisition module includes a temperature acquisition submodule, the temperature acquisition submodule being configured to acquire an operating environment temperature of the power supply circuit and output real-time temperature data, the input end of the switch module corresponding to the temperature acquisition submodule being electrically connected with the output end of the voltage conversion module, and the second output end of the switch module corresponding to the temperature acquisition submodule being electrically connected with the output end.

[0013] The execution module of the execution module includes a direct current voltage conversion module corresponding to the temperature acquisition submodule, the direct current voltage conversion module being configured to step down the output voltage of the voltage conversion module.

[0014] The control module is configured to output, to the control end of the switch module corresponding to the temperature acquisition submodule, a control signal for controlling the input end of the switch module to be conductive with the first output end of the switch module, in the case that the temperature value represented by the real-time temperature data output by the temperature acquisition submodule is within a set temperature range.

[0015] Optionally, the control module is configured to control the input end of the corresponding switch module to be conductive with the second output end of the switch module, in the case that the temperature value represented by the real-time temperature data output by the temperature acquisition submodule is less than a first set temperature, so that the output end of the voltage conversion module is directly conductive with the output end of the power supply circuit.

[0016] The control module is further configured to output a control signal to the control end of the corresponding switch module to control the input end of the switch module to be conductive with the first output end of the switch module, and connect the direct current voltage conversion module between the output end of the voltage conversion module and the output end of the power supply circuit, when the temperature value represented by the real-time temperature data output by the temperature acquisition submodule is not less than the first set temperature and less than the second set temperature.

[0017] Optionally, the control module is further configured to output a control signal to the control end of the corresponding switch module to control the switch module to be open, when the temperature value represented by the real-time temperature data output by the temperature acquisition submodule is greater than the second set temperature.

[0018] Optionally, the power supply circuit further comprises an indication module electrically connected with the control module, and the control module is further configured to control the indication module to send an indication signal, when the temperature value represented by the real-time temperature data output by the temperature acquisition submodule is greater than the second set temperature.

[0019] Optionally, the power supply circuit further comprises an overvoltage and overcurrent protection module connected in series with the voltage conversion module and the switch module, the acquisition module comprises an interference acquisition submodule configured to detect an interference signal in the power supply circuit and output real-time interference data representing the strength of the interference signal, and the execution module of the execution module comprises an anti-interference module configured to filter out the interference signal in the power supply circuit.

[0020] The input end of the switch module corresponding to the anti-interference module is electrically connected with the output end of the overvoltage and overcurrent protection module, and the second output end of the switch module corresponding to the anti-interference module is electrically connected with the input end of the voltage conversion module.

[0021] The control module is configured to output a control signal to the control end of the corresponding switch module to control the input end of the switch module to be conductive with the second output end of the switch module, when the real-time interference data is less than a preset interference value, so that the output end of the overvoltage and overcurrent protection module is directly connected with the input end of the voltage conversion module.

[0022] The control module is further configured to output a control signal to the control end of the corresponding switch module to control the input end of the switch module to be conductive with the first output end of the switch module, when the real-time interference data is greater than a preset interference value, so that the anti-interference module is connected between the output end of the overvoltage and overcurrent protection module and the input end of the voltage conversion module.

[0023] Optionally, the interference acquisition sub-module comprises a first interference acquisition sub-module and a second interference acquisition sub-module, an input end of the first interference acquisition sub-module is electrically connected between an output end of the overvoltage and overcurrent protection module and an input end of the switch module, and an input end of the second interference acquisition sub-module is electrically connected to an output end of the power supply circuit.

[0024] Optionally, the voltage conversion module comprises a wide-voltage constant-voltage module.

[0025] Optionally, the external power supply signal is a 6V-48V direct current voltage signal.

[0026] Optionally, the voltage conversion module is configured to output a 12V direct current voltage signal.

[0027] As a second aspect of the present application, a machine vision device is provided, comprising a device main body and a power supply circuit for power supply, wherein the power supply circuit is configured as the power supply circuit according to the first aspect of the present application, and the output end is electrically connected to a power input end of the device main body.

[0028] The working environment of the power supply circuit affects the voltage output by the output end of the power supply circuit. In the embodiment of the present application, the execution module is used to reduce or even eliminate the influence of the "working environment" on the power supply circuit, so as to ensure the stable output of the power supply circuit and make the corresponding device main body work in an ideal state.

[0029] The features and advantages of the present application will be described in detail in the following specific embodiments and drawings. The best embodiment or means of the present application will be described in detail in conjunction with the drawings, but it is not a limitation of the technical scheme of the present application. In addition, the features, elements and components appearing in each of the following text and drawings are multiple, and different symbols or numbers are marked for convenience of representation, but all represent the same or similar structure or function parts. BRIEF DESCRIPTION OF DRAWINGS

[0030] The present application will be further described below in conjunction with the drawings:

[0031] Figure 1 A power supply circuit principle block diagram of the embodiment of the present application;

[0032] Figure 2 Another power supply circuit principle block diagram of the embodiment of the present application;

[0033] Figure 3 Another power supply circuit principle block diagram of the embodiment of the present application.

[0034] Wherein, 1, external power supply signal; 2, overvoltage and overcurrent protection module; 3, wide voltage constant voltage module; 4, switching module; 5, control module; 6, temperature acquisition submodule; 7, DC voltage conversion module; 8, indication module; 9, equipment main body; 11, anti-interference module; 101, first interference acquisition submodule; 102, second interference acquisition submodule. DETAILED DESCRIPTION

[0035] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numbers represent the same or similar elements or elements having the same or similar functions throughout. Based on the embodiments in the embodiments, it is intended to explain the present application, and cannot be understood as a limitation of the present application.

[0036] In this specification, "one embodiment" or "an example" or "an example" means that the specific features, structures or characteristics described in connection with the embodiment itself can be included in at least one embodiment of the present application. The appearance of the phrase "in one embodiment" at various places in the specification does not necessarily refer to the same embodiment.

[0037] It has been found through research that the power supply voltage of the machine vision equipment can greatly affect the measurement accuracy of the machine vision equipment. Specifically, if the power supply voltage of the machine vision equipment is unstable, it will cause the measurement result of the machine vision equipment to be inaccurate. Accordingly, improving the stability of the power supply voltage of the machine vision equipment can at least improve the measurement accuracy of the machine vision equipment to some extent.

[0038] Therefore, as a first aspect of the present application, as shown in the accompanying drawings, a power supply circuit is provided, which comprises an input end Vin for receiving an external power supply signal 1 and an output end Vout for supplying power to an equipment main body 9, and a voltage conversion module and at least one switching module 4 are connected in series between the input end Vin and the output end Vout. Figures 1 to 3

[0039] In the embodiments of the present application, the switching module 4 comprises a first output end and a second output end. That is, a first branch can be formed between the input end of the switching module 4 and the first output end, and a second branch can be formed between the input end of the switching module 4 and the second output end, and the first branch and the second branch are selectively conducted.

[0040] The voltage conversion module is used for voltage conversion processing on the external power supply signal 1, so as to convert the external power supply signal 1 into a voltage signal that can be used by the equipment main body 9.

[0041] The power supply circuit can further comprise an execution module, a control module 5 and at least one acquisition module.

[0042] ​Each of the acquisition modules is configured to acquire a corresponding power circuit operating parameter and output acquisition data through a corresponding output terminal, and the acquisition modules correspond to the switch modules 4 one by one.

[0043] The control module 5 is electrically connected in the power circuit, and the control module 5 is configured to receive the acquisition data, compare the acquisition data with preset data, and control the input terminal of each switch module 4 to be conductive with one of the first output terminal of the switch module 4 and the second output terminal of the switch module 4 based on a comparison result.

[0044] The execution module is configured to correct the operating state of the power circuit according to the conductive state of each switch module 4, so as to adjust the voltage output by the voltage conversion module through the output terminal Vout of the power circuit to a set voltage range.

[0045] In the embodiment of the utility model, the switch module 4 has two branches, and different branches correspond to different adjustment modes of the execution module.

[0046] The operating parameter of the power circuit is affected by environmental factors, and in the power circuit provided in the embodiment of the utility model, after the acquisition module acquires the operating parameter of the power circuit, the switch module 4 can be controlled to select a branch, the adjustment mode of the execution module is finally determined, and the voltage output by the voltage conversion module through the output terminal Vout of the power circuit is adjusted to a set voltage range. That is to say, even if the operating parameter of the power circuit changes, the output voltage of the power circuit can still be ensured to be stable within the set voltage range. After the power input terminal of the device main body 9 receives the voltage maintained within the set voltage range, the operating state is also more stable. In the embodiment of the utility model, the device main body 9 is the device main body of a machine vision device, and therefore, the power circuit used in the machine vision device can improve the operating precision of the machine vision device.

[0047] As an optional implementation, the input terminal of the control module 5 is electrically connected with the output terminal of each acquisition module, and each output terminal of the control module 5 is electrically connected with the control terminal of each switch module 4.

[0048] The control module 5 is configured to receive the acquisition data, compare the acquisition data with preset data, generate a control signal based on a comparison result, and output the control signal through the output terminal of the control module 5.

[0049] The control signal is configured to control the input terminal of the corresponding switch module 4 to be conductive with one of the first output terminal of the switch module 4 and the second output terminal of the switch module 4.

[0050] In the embodiment of the utility model, the specific structure of the execution module is not specially limited, as long as the execution module corresponds to multiple different understanding modes.

[0051] Optionally, the execution module includes at least one execution module, the execution module corresponds to the acquisition module one by one, the execution module matches the type of the power supply circuit working parameter collected by the corresponding acquisition module, the input end of the execution module is electrically connected to the first output end of the corresponding switch module 4, and the output end of the execution module is electrically connected to the second output end of the corresponding switch module 4, so that the working state of the power supply circuit in the case that the input end of the switch module and the first output end of the switch module are conducted is different from the working state of the power supply circuit in the case that the input end of the switch module and the second output end of the switch module are conducted.

[0052] The "working environment" factor affecting the output voltage of the power supply circuit can include the temperature of the working environment of the power supply circuit. Figure 1 As shown in the utility model embodiment, the acquisition module can include a temperature acquisition submodule 6.

[0053] The temperature acquisition submodule 6 is used for collecting the working environment temperature of the power supply circuit and outputting real-time temperature data, the input end of the switch module 4 corresponding to the temperature acquisition submodule 6 is electrically connected to the output end of the voltage conversion module, and the second output end of the switch module 4 corresponding to the temperature acquisition submodule 6 is electrically connected to the output end Vout. As an optional implementation manner, the voltage conversion module includes a wide-voltage constant-voltage module 3.

[0054] In the embodiment of the utility model, the wide-voltage constant-voltage module 3 is a voltage stabilizing device capable of receiving a larger range of input voltage and stably outputting a fixed voltage.

[0055] Correspondingly, the execution module of the execution module includes a direct-current voltage conversion module 7 corresponding to the temperature acquisition submodule 6, and the direct-current voltage conversion module 7 is used for reducing the output voltage of the voltage conversion module (specifically, the wide-voltage constant-voltage module 3).

[0056] Correspondingly, the control module 5 is used for outputting a control signal for controlling the input end of the switch module 4 corresponding to the temperature acquisition submodule 6 and the first output end of the switch module 4 to be conducted to the switch module corresponding to the temperature acquisition submodule 6 in the case that the temperature value represented by the real-time temperature data output by the temperature acquisition submodule 6 is within the set temperature range.

[0057] Specifically, as shown in the utility model embodiment, Figure 1As shown, in the present embodiment, the input terminal Vin and the output terminal Vout of the power supply circuit are connected in series with the overvoltage and overcurrent protection module 2, the voltage conversion module (specifically, the wide-voltage constant-voltage module 3), and the switch module 4 in sequence. The switch module 4 is in the form of a single-pole double-throw switch. The direct-current voltage conversion module 7 is a DC-DC direct-current voltage converter, which is configured to step down the voltage output by the voltage conversion module (specifically, the wide-voltage constant-voltage module 3).

[0058] The overvoltage and overcurrent protection module 2 is configured to protect the device main body 9 from damage caused by excessive voltage and current in the circuit. As an optional implementation, the overvoltage and overcurrent protection module 2 includes an overvoltage protection module, an overcurrent protection module, and a soft-start circuit module. Optionally, the overvoltage protection module includes a polyer positive temperature coefficient (PPTC) polymer positive temperature coefficient thermistor, also known as a self-resetting fuse or battery overcurrent protection sheet. The overcurrent protection module includes a transient voltage suppressor (TVS), which is a kind of overvoltage protection device with bidirectional voltage stabilization and bidirectional negative resistance characteristics. The soft-start circuit module is configured to delay the power-on time of the external power supply and reduce the inrush current during power-on. The soft-start circuit module is usually implemented by a MOS tube.

[0059] As an optional implementation, the control module 5 is configured to, in a case where the temperature value represented by the real-time temperature data output by the temperature acquisition submodule 6 is less than a first set temperature, output, to the control terminal of the corresponding switch module 4, a control signal for controlling the input terminal of the corresponding switch module 4 and the second output terminal of the switch module 4 to be conductive, so that the output terminal of the voltage conversion module (specifically, the wide-voltage constant-voltage module 3) is directly connected to the output terminal Vout of the power supply circuit. That is, in a case where the ambient temperature is relatively low, the voltage output by the direct-current voltage conversion module 7 is not needed, and the voltage output by the wide-voltage constant-voltage module 3 directly meets the voltage requirement of the device main body 9.

[0060] The control module 5 is further configured to, in a case where the temperature value represented by the real-time temperature data output by the temperature acquisition submodule 6 is not less than the first set temperature and less than a second set temperature, send, to the control terminal of the corresponding switch module 4, a control signal for controlling the input terminal of the corresponding switch module 4 and the first output terminal of the switch module 4 to be conductive, and electrically connect the direct-current voltage conversion module 7 between the output terminal of the voltage conversion module (specifically, the wide-voltage constant-voltage module 3) and the output terminal Vout of the power supply circuit. That is, in a case where the ambient temperature is relatively high, the voltage output by the direct-current voltage conversion module 7 is needed to step down the voltage output by the voltage conversion module (specifically, the wide-voltage constant-voltage module 3).

[0061] Exemplarily, the voltage conversion module (specifically, the wide-voltage constant-voltage module 3) outputs a 12V direct-current voltage signal after receiving an external power supply signal 1 (a 12~48V direct-current voltage signal). When the input end of the direct-current voltage conversion module 7 is electrically connected to the output end of the wide-voltage constant-voltage module 3, the direct-current voltage conversion module 7 converts the 12V direct-current voltage signal output by the voltage conversion module (specifically, the wide-voltage constant-voltage module 3) into a 5V voltage signal and outputs the 5V voltage signal to the output end Vout of the power supply circuit.

[0062] In the embodiment of the present application, the first set temperature and the second set temperature are not specially limited, and the first set temperature and the second set temperature can be determined according to the specific type of the device main body 9. In the case of a profilometer, the first set temperature can be between 40℃ and 50℃ (for example, 45℃), and the second set temperature can be between 55℃ and 70℃ (for example, 60℃).

[0063] In the case where the ambient temperature exceeds the second set temperature, the temperature is too high, and in order to protect the device main body 9, the power supply circuit can be controlled to stop outputting the voltage. That is, the control module 5 is also used to output a control signal for controlling the open circuit of the corresponding switch module 4 to the control end of the switch module 4 in the case where the temperature value represented by the real-time temperature data output by the temperature acquisition submodule 6 is greater than the second set temperature.

[0064] The so-called "open circuit of the switch module 4" means that the input end of the switch module 4 is not conductive with the first output end and the second output end of the switch module 4.

[0065] In order to facilitate maintenance, the power supply circuit can further include an indication module 8 electrically connected to the control module 5, and the control module 5 is also used to control the indication module 8 to output an indication signal in the case where the temperature value represented by the real-time temperature data output by the temperature acquisition submodule 6 is greater than the second set temperature.

[0066] In the embodiment of the present application, the specific type of the indication module 8 is not specially limited, as long as it can generate an indication signal for warning. The indication module 8 can be an indicator lamp that outputs an optical signal, or a loudspeaker that outputs an acoustic signal.

[0067] As an implementation manner, as shown in Figure 1 The power supply circuit includes a temperature acquisition submodule 6, a control module 5 and an indication module 8. The temperature acquisition submodule 6 is used to acquire the working environment temperature of the power supply circuit. The control module 5 is used to control the input end of the switch module 4 to be conductive with the second output end of the switch module 4 in the case where the temperature value represented by the real-time temperature data output by the temperature acquisition submodule 6 is less than 45℃, so that the output end of the voltage conversion module (specifically, the wide-voltage constant-voltage module 3) is directly communicated with the output end Vout of the power supply circuit.

[0068] The control module 5 outputs a control signal to the control end of the corresponding switch module 4 to control the switch module 4 to be conductive between the input end and the first output end when the temperature value represented by the real-time temperature data output by the temperature acquisition submodule 6 is greater than 45℃ and less than 60℃, so that the direct-current voltage conversion module 7 is electrically connected between the output end of the voltage conversion module (specifically, the wide-voltage constant-voltage module 3) and the output end Vout of the power supply circuit, so as to reduce the output voltage of the output end Vout of the power supply circuit.

[0069] In this embodiment, the output voltage of the output end Vout of the power supply circuit is 5V at this time, the indication module 8 is used to indicate the current working state of the power supply circuit, and the switch module 4 can also be open. The control module 5 controls the switch module 4 to be open and controls the indication module 8 to work when the temperature value represented by the real-time temperature data output by the temperature acquisition submodule 6 is greater than 60℃. The indication module 8 is set as an indicating lamp, which indicates an alarm through the indicating lamp, and indicates that the working environment temperature of the current power supply circuit is abnormal (the temperature is too high). The temperature acquisition module is used to acquire the working environment temperature of the power supply circuit, the control module 5 is used to judge the temperature range of the working environment temperature of the power supply circuit, and then it is judged whether the direct-current voltage conversion module 7 is connected to the power supply circuit to reduce the output voltage of the power supply circuit. The output voltage of the power supply circuit is reduced when the power supply circuit works in a high-temperature environment, and the technical effect of reducing power consumption is realized.

[0070] When the length of the wire in the circuit is relatively long, external signals can be coupled to the wire and interference signals can be generated. In order to reduce the influence of the interference signals on the working state of the equipment body 9, the acquisition module can also include an interference acquisition submodule for acquiring and detecting whether there is an interference signal in the power supply circuit.

[0071] As shown in Figure 2 The execution module corresponding to the interference acquisition submodule in the execution module can include an anti-interference module 11 that can eliminate signal interference in the power supply circuit. The input end of the switch module 4 corresponding to the anti-interference module 11 is electrically connected to the output end of the overvoltage and overcurrent protection module 2, and the second output end of the switch module 4 corresponding to the anti-interference module 11 is electrically connected to the input end of the voltage conversion module (specifically, the wide-voltage constant-voltage module 3).

[0072] The control module 5 is used to output a control signal to control the input end of the corresponding switch module 4 to be conductive to the second output end of the switch module 4 when the real-time interference data is less than a preset interference value, so that the output end of the overvoltage and overcurrent protection module 2 is directly connected to the input end of the voltage conversion module (specifically, the wide-voltage constant-voltage module 3).

[0073] The control module 5 is also configured to output a control signal for controlling the input end of the corresponding switch module 4 and the first output end of the switch module 4 to be conductive, so as to electrically connect the anti-interference module 11 between the output end of the over-voltage and over-current protection module 2 and the input end of the wide-voltage constant-voltage module 3, when the real-time interference data is greater than the preset interference value.

[0074] In the above embodiment, the control module 5 receives the collection data sent by the collection module and compares the collection data with the preset data corresponding to the real-time collection data to determine the specific working state of the power supply circuit, and then selects whether to connect the execution module to the power supply circuit according to the working state of the power supply circuit, so as to solve the signal interference problem of the power supply circuit in long-distance power supply in the prior art.

[0075] As shown in Figure 3 In the embodiment, the collection module includes a temperature collection sub-module 6 and an interference collection sub-module, and the power supply circuit also includes a switch module 4 corresponding to the temperature collection sub-module 6 and a switch module 4 corresponding to the interference collection sub-module.

[0076] The execution module also includes a direct-current voltage conversion module 7 and an anti-interference module 11, the direct-current voltage conversion module 7 is configured to reduce the output voltage of the voltage conversion module (specifically, the wide-voltage constant-voltage module 3), and the anti-interference module 11 is configured to filter the interference signals in the power supply circuit.

[0077] The switch module 4 corresponding to the temperature collection sub-module 6 is electrically connected between the output end of the over-voltage and over-current protection module 2 and the input end of the wide-voltage constant-voltage module 3, the first output end of the switch module 4 corresponding to the temperature collection sub-module 6 is electrically connected to the input end of the direct-current voltage conversion module 7, and the second output end of the switch module 4 corresponding to the temperature collection sub-module 6 is electrically connected to the output end of the direct-current voltage conversion module 7.

[0078] The switch module 4 corresponding to the interference collection sub-module is electrically connected between the output end of the voltage conversion module (specifically, the wide-voltage constant-voltage module 3) and the output end Vout of the power supply circuit, the first output end of the switch module corresponding to the interference collection sub-module is electrically connected to the input end of the anti-interference module 11, and the second output end of the switch module corresponding to the interference collection sub-module is electrically connected to the output end of the anti-interference module 11.

[0079] The control module 5 is configured to control the input end of the switch module 4 corresponding to the temperature collection sub-module 6 and the second output end of the switch module 4 to be electrically connected, when the temperature value represented by the real-time temperature data output by the temperature collection sub-module 6 is less than 45℃, so as to directly connect the output end of the wide-voltage constant-voltage module 3 to the output end Vout of the power supply circuit.

[0080] The control module 5 is also used for controlling the input end of the switching module 4 corresponding to the temperature acquisition submodule 6 to be electrically connected with the first output end of the switching module 4, so as to electrically connect the direct-current voltage conversion module 7 between the output end of the wide-voltage constant-voltage module 3 and the output end Vout of the power supply circuit, when the temperature value represented by the real-time temperature data output by the temperature acquisition submodule 6 is greater than 45 DEG C and less than 60 DEG C.

[0081] The control module 5 is also used for controlling the input end of the switching module 4 corresponding to the temperature acquisition submodule 6 to be electrically connected with the first output end of the switching module 4, so as to electrically connect the direct-current voltage conversion module 7 between the output end of the wide-voltage constant-voltage module 3 and the output end Vout of the power supply circuit, when the temperature value represented by the real-time temperature data output by the temperature acquisition submodule 6 is greater than 45 DEG C and less than 60 DEG C.

[0082] The control module 5 is also used for controlling the input end of the switching module 4 corresponding to the temperature acquisition submodule 6 to be electrically connected with the first output end of the switching module 4, so as to electrically connect the direct-current voltage conversion module 7 between the output end of the wide-voltage constant-voltage module 3 and the output end Vout of the power supply circuit, when the temperature value represented by the real-time temperature data output by the temperature acquisition submodule 6 is greater than 45 DEG C and less than 60 DEG C.

[0083] The above technical scheme, in the power supply circuit, temperature acquisition submodule 6 and interference acquisition submodule are arranged simultaneously, and two switching modules 4 controlled by the control module 5 are arranged in the power supply circuit, whether the direct-current voltage conversion module 7 and the anti-interference module 11 are connected to the power supply circuit is controlled respectively, and then the power supply circuit has the beneficial effects of anti-interference and power consumption reduction when long-distance power supply.

[0084] In the specific embodiment shown in the above technical scheme, the interference acquisition submodule can include a first interference acquisition submodule 101 and a second interference acquisition submodule 102, the first interference acquisition submodule 101 is used for input end Vin whether there is a disturbance signal, and the second interference acquisition submodule 102 is used for collecting whether there is a disturbance signal at the output end Vout. Figure 3 It should be pointed out that in the embodiment of the utility model, the first interference acquisition submodule 101 and the second interference acquisition submodule 102 can be regarded as two parts of the same interference acquisition submodule.

[0085] Specifically, in the embodiment, the external power supply signal 1 is set as a 6V-48V direct current voltage signal, the wide-voltage constant-voltage module 3 converts the 6-48V direct current voltage signal input by the external power supply into a stable output 12V direct current voltage signal, the direct current voltage conversion module 7 converts the 12V direct current voltage signal output by the voltage conversion module (specifically, the wide-voltage constant-voltage module 3) into a 5V direct current voltage signal, the control module 5 is set as an MCU controller, and each switch module 4 is set as a single-pole double-throw relay switch. The output end of the control module 5 is electrically connected with the coil of the relay switch, and the conduction direction of the switch module 4 is controlled by controlling the current flowing into the coil.

[0086] As a second aspect of the utility model, a machine vision device is also provided, which comprises a device body 9 and a power supply circuit for power supply, wherein the power supply circuit is the power supply circuit described above, and the output end Vout is electrically connected with the power supply input end of the device body 9.

[0087] The machine vision device and the power supply circuit provided in the embodiment have similar beneficial effect reasoning process, which will not be repeated here.

[0088] As an optional implementation, the machine vision device can be a profilometer. The profilometer is an instrument for testing and inspecting the profile, two-dimensional size and two-dimensional displacement of an object, mainly used for defect detection of high-precision industrial objects, and specifically used for detecting whether the surface of a device with millimeter or micrometer level has scratches, dents and other defects. In the related art, when the external power supply cable of the profilometer exceeds 30 meters, the loss on the cable is large, which will cause the output voltage value of the power supply circuit to be lower than the required voltage value for normal operation of the profilometer, and further cause the profilometer to be unable to work normally. In the power supply circuit provided in the embodiment of the utility model, the output voltage of the power supply voltage can be raised to the voltage range for normal operation of the profilometer through the adjustment of the execution module.

[0089] In addition, the working environment of the profilometer is complex, and it is usually wired in parallel with a large interference source such as a servo motor, which causes strong coupling interference signals in the power supply circuit. Through the cooperation of the interference collection submodule and the anti-interference module, the interference can be eliminated, the output voltage of the power supply circuit can be stabilized in the required voltage range for normal operation of the profilometer, and the abnormal working of the profilometer can be ensured.

[0090] When the profilometer is used in a high-temperature environment (greater than 45℃), the combination of the temperature collection submodule 6 and the direct current voltage conversion module 7 can reduce the overall power consumption of the profilometer and prolong the service life of the internal devices of the profilometer.

[0091] The profilometer is exemplified in the above, but the utility model is not limited thereto, and the machine vision device can also be an industrial camera, a laser polarization instrument or the like.

[0092] It should be noted that the device body 9 includes optical modules, driving modules and other components that realize the specific functions of the machine vision device.

[0093] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Those skilled in the art should understand that the present application includes but is not limited to the contents described in the drawings and the above specific embodiment. Any modification that does not deviate from the function and structural principle of the present application will be included in the scope of the claims.

Claims

1. A power supply circuit, characterized by comprising: The power supply circuit comprises a control module (5), an execution module, a voltage conversion module, at least one switching module (4), an input end (Vin) for receiving an external power supply signal (1), an output end (Vout) for supplying power to a device main body (9), and at least one acquisition module, the voltage conversion module and the switching module (4) being connected in series between the input end (Vin) and the output end (Vout), the switching module (4) comprising a first output end and a second output end, The voltage conversion module is configured to perform voltage conversion processing on the external power supply signal (1). Each acquisition module is configured to acquire a corresponding power supply circuit operating parameter and output acquisition data through a corresponding output end, and the acquisition modules correspond one-to-one to the switching modules (4). The control module (5) is electrically connected in the power supply circuit, and the control module (5) is configured to receive the acquisition data and perform data comparison between the acquisition data and preset data, and then control one of the input end of each switching module (4) and the first output end of the switching module (4) and the second output end of the switching module (4) to be conductive based on the comparison result. The execution module is configured to correct the working state of the power supply circuit according to the conduction state of each switching module (4), so as to adjust the voltage output by the voltage conversion module through the output end (Vout) of the power supply circuit to a set voltage range.

2. The power supply circuit of claim 1, wherein, The input end of the control module (5) is electrically connected to the output end of each acquisition module, each output end of the control module (5) is electrically connected to the control end of each switching module (4), and the control module (5) is configured to receive the acquisition data and perform data comparison between the acquisition data and preset data, and then generate a control signal based on the comparison result and output the control signal through the output end of the control module (5), the control signal being configured to control one of the input end of the corresponding switching module (4) and the first output end of the switching module (4) and the second output end of the switching module (4) to be conductive.

3. The power supply circuit of claim 1, wherein, The execution module comprises at least one execution module, the execution module corresponding one-to-one to the acquisition module, the execution module matching the type of the power supply circuit operating parameter acquired by the corresponding acquisition module, the input end of the execution module being electrically connected to the first output end of the corresponding switching module (4), and the output end of the execution module being electrically connected to the second output end of the corresponding switching module (4), so that the working state of the power supply circuit in the case that the input end of the switching module and the first output end of the switching module (4) are conductive is different from the working state of the power supply circuit in the case that the input end of the switching module and the second output end of the switching module (4) are conductive.

4. The power supply circuit of claim 3, wherein, The acquisition module comprises a temperature acquisition submodule (6) configured to acquire an operating environment temperature of the power supply circuit and output real-time temperature data, an input end of a switch module (4) corresponding to the temperature acquisition submodule (6) is electrically connected to an output end of the voltage conversion module, and a second output end of the switch module (4) corresponding to the temperature acquisition submodule (6) is electrically connected to the output end (Vout). The execution module of the execution module group comprises a direct-current voltage conversion module (7) corresponding to the temperature acquisition submodule (6), and the direct-current voltage conversion module (7) is configured to step down the output voltage of the voltage conversion module. The control module (5) is configured to output, to a control end of the switch module (4) corresponding to the temperature acquisition submodule (6), a control signal for controlling the input end of the switch module (4) and the first output end of the switch module (4) to be conductive, when a temperature value represented by the real-time temperature data output by the temperature acquisition submodule (6) is within a set temperature range.

5. The power supply circuit of claim 4, wherein, The control module (5) is configured to control the input end of the corresponding switch module (4) and the second output end of the switch module (4) to be conductive, so that the output end of the voltage conversion module is directly connected to the output end (Vout) of the power supply circuit, when the temperature value represented by the real-time temperature data output by the temperature acquisition submodule (6) is less than a first set temperature. The control module (5) is further configured to output, to the control end of the corresponding switch module (4), a control signal for controlling the input end of the corresponding switch module (4) and the first output end of the switch module (4) to be conductive, and electrically connect the direct-current voltage conversion module (7) between the output end of the voltage conversion module and the output end (Vout) of the power supply circuit, when the temperature value represented by the real-time temperature data output by the temperature acquisition submodule (6) is not less than the first set temperature and less than a second set temperature.

6. The power supply circuit of claim 5, wherein, The control module (5) is further configured to output, to the control end of the corresponding switch module (4), a control signal for controlling the switch module (4) to be open-circuit, when the temperature value represented by the real-time temperature data output by the temperature acquisition submodule (6) is greater than the second set temperature.

7. The power supply circuit of claim 6, wherein, The power supply circuit further comprises an indication module (8) electrically connected to the control module (5), and the control module (5) is further configured to control the indication module (8) to output an indication signal, when the temperature value represented by the real-time temperature data output by the temperature acquisition submodule (6) is greater than the second set temperature.

8. The power supply circuit of claim 1, wherein, The power supply circuit further comprises an overvoltage and overcurrent protection module (2) connected in series with the voltage conversion module and the switch module (4), the acquisition module comprises an interference acquisition submodule configured to detect an interference signal in the power supply circuit and output real-time interference data representing the strength of the interference signal, and the execution module of the execution module group comprises an anti-interference module (11) configured to filter out the interference signal in the power supply circuit. An input end of a switch module (4) corresponding to the anti-interference module is electrically connected to an output end of the overvoltage and overcurrent protection module (2), and a second output end of the switch module (4) corresponding to the anti-interference module is electrically connected to an input end of the voltage conversion module; The control module (5) is configured to output, when the real-time interference data is less than a preset interference value, a control signal to a control end of a corresponding switch module (4) to control the input end of the switch module (4) and the second output end of the switch module (4) to be conductive, so that the output end of the overvoltage and overcurrent protection module (2) is directly connected to the input end of the voltage conversion module; The control module (5) is further configured to output, when the real-time interference data is greater than the preset interference value, a control signal to a control end of a corresponding switch module (4) to control the input end of the switch module (4) and the first output end of the switch module (4) to be conductive, so that the anti-interference module (11) is electrically connected between the output end of the overvoltage and overcurrent protection module (2) and the input end of the voltage conversion module.

9. The power supply circuit of claim 8, wherein, The interference collection sub-module includes a first interference collection sub-module (101) and a second interference collection sub-module (102), an input end of the first interference collection sub-module (101) is electrically connected between an output end of the overvoltage and overcurrent protection module (2) and an input end of the switch module (4), and an input end of the second interference collection sub-module (102) is electrically connected to an output end (Vout) of the power supply circuit.

10. The power supply circuit according to any one of claims 1 to 9, characterized by, The voltage conversion module includes a wide-voltage constant-voltage module (3).

11. The power supply circuit according to any one of claims 1 to 9, characterized by The external power supply signal is a 6V-48V direct current voltage signal.

12. The power supply circuit according to any one of claims 1 to 9, characterized by The voltage conversion module is configured to output a 12V direct current voltage signal.

13. Machine vision apparatus comprising an apparatus body (9) and a power supply circuit for supplying power, characterized in that The power supply circuit is configured as the power supply circuit in any one of claims 1 to 12, and the output end (Vout) is electrically connected to a power supply input end of the device body (9).

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