Remote controller circuit for wire saw frequency converter

Abstract

The utility model relates to the technical field of low-power-consumption circuits, in particular to a remote controller circuit for a wire saw frequency converter, which comprises a main control unit, a liquid crystal display screen, a wireless module, a keyboard, an encoder, an indicator lamp, a first boosting type low-power-consumption power converter and a second boosting type low-power-consumption power converter. The first boost type low-power-consumption power converter is connected with the wireless module, and an enable signal of the first boost type low-power-consumption power converter is connected with the main control unit; the second boost type low-power-consumption power converter is connected with the main control unit, the liquid crystal display screen, the keyboard, the encoder and the indicating lamp. According to the utility model, the main control unit controls the turn-off of the first boost low-power-consumption power converter through the enable signal, thereby realizing the dynamic management of the power consumption of the wireless module, and reducing the power consumption. The whole system can obtain stable 3.3 V voltage through boost type low-power-consumption power supply conversion, even if the battery voltage is lower than 2.2 V, the whole system can still work normally, and the endurance of the product is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to low -power consumption circuit technical field, concretely is a kind of remote controller circuit for rope saw frequency converter. BACKGROUND

[0002] Rope saw is the common equipment when cutting stone, but due to the hardness of stone is different, it can make the output load of rope saw motor change sharply, affect the normal work of cutting equipment, so the control of rope saw often involves remote frequency converter. The remote controller powered by battery needs to be as low as possible to prolong the endurance time of product. The current conventional method is to use battery to directly power the system, but the following problems may exist:

[0003] On the one hand, since the power supply is not distributed and managed, the unit circuit directly powered by the battery is in continuous working state, and cannot be started or hibernated on demand, so the overall power consumption of the system is relatively high.

[0004] On the other hand, since the minimum operating voltage of the system is usually higher than the cut-off discharge voltage of the battery, the system may stop working before the battery reaches the cut-off discharge voltage, so that the battery still has some remaining power when the system stops. Obviously, the energy of the battery cannot be fully utilized, which ultimately leads to shorter overall endurance time of the product.

[0005] Therefore, there is an urgent need for a remote controller circuit for rope saw frequency converter to greatly improve the endurance of the product. UTILITY MODEL CONTENT

[0006] To overcome the problems in the prior art, the utility model aims to provide a remote controller circuit for rope saw frequency converter, which reduces power consumption and solves the problem that the system cannot work normally when the battery voltage is lower than 2.2V in the prior art, and greatly improves the endurance of the product.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a remote controller circuit for rope saw frequency converter, comprising a main control unit, a liquid crystal display, a wireless module, a keyboard, an encoder, an indicator light, a first boost type low power consumption power converter and a second boost type low power consumption power converter.

[0008] The first boost type low power consumption power converter is connected with the wireless module, and the enable signal of the first boost type low power consumption power converter is connected with the main control unit through I / O mode; the second boost type low power consumption power converter is connected with the main control unit, the liquid crystal display, the keyboard, the encoder and the indicator light respectively.

[0009] The utility model further sets up: first boost type low -power consumption power supply converter and second boost type low -power consumption power supply converter are connected on power input circuit, the power input circuit connects battery power supply module,

[0010] The enable signal of the second boost type low-power consumption power supply converter is connected with the power input circuit through the pull-up resistor R1, and the enable signal of the first boost type low-power consumption power converter is grounded through the pull-down resistor R21.

[0011] The utility model further sets up: first boost type low -power consumption power supply converter includes control chip U5, capacitor C19, capacitor C20, capacitor C21, resistance R8, resistance R9 and inductance L4, one end of capacitor C19 connects control chip U5's VIN pin, and the other end is grounded, one end of resistance R9 is grounded, and the other end is connected with resistance R8, and one end of resistance R8 away from resistance R9 is connected at control chip U5's VOUT pin, and the FB pin of control chip U5 is connected between resistance R8 and resistance R9, control chip U5's VOUT pin still connects capacitor C20, capacitor C21 respectively, and the GND pin of capacitor C20, capacitor C21 and control chip U5 are all grounded,

[0012] The VIN pin of control chip U5 is connected with the second boost type low-power consumption power supply converter and the power input circuit respectively.

[0013] The utility model further sets up: the EN pin of control chip U5 connects main control unit, one end of pull-down resistance R21 is accessed between the EN pin of control chip U5 and main control unit, and the other end is grounded, one end of inductance L4 connects control chip U5's VIN pin, and the other end connects control chip U5's SW pin,

[0014] One end of inductance L1 is connected at control chip U5's VOUT pin, and the other end of inductance L1 is connected with power output end VCC3.

[0015] The utility model further sets up: second boost type low -power consumption power supply converter includes control chip U3, capacitor C14, capacitor C17, capacitor C18, resistance R6, resistance R7 and inductance L2, one end of capacitor C14 connects control chip U3's VIN pin, and the other end is grounded, one end of resistance R7 is grounded, and the other end is connected with resistance R6, and one end of resistance R6 away from resistance R7 is connected at control chip U3's VOUT pin, and the FB pin of control chip U3 is connected between resistance R6 and resistance R7, control chip U3's VOUT pin still connects capacitor C17, capacitor C18 respectively, and the GND pin of capacitor C17, capacitor C18 and control chip U3 are all grounded,

[0016] The VIN pin of the control chip U3 is connected with the first boost type low-power power converter and the power input circuit respectively.

[0017] The utility model further sets up: the EN pin of control chip U3 connects the pull-up resistance R1, the pull-up resistance R1 connects the power input circuit, one end of inductance L2 connects the VIN pin of control chip U3, and the other end connects the SW pin of control chip U3.

[0018] The VOUT pin of the control chip U3 is also connected with the power output end VCC2 and the power output end VCC1 respectively, and the inductance L3 is also connected between the VOUT pin of the control chip U3 and the power output end VCC1.

[0019] The utility model further sets up: the power input circuit includes power input end VCC, capacitor C1, capacitor C2, capacitor C3, capacitor C37, resistance R2, resistance R3 and resistance R99;The power input end VCC is connected with resistance R2, capacitor C1, capacitor C2, capacitor C3 and battery power supply module respectively, and capacitor C1, capacitor C2, capacitor C3 are all grounded;The resistance R2 is connected with external main control unit, capacitor C37 and resistance R3 respectively;The resistance R3 is connected with resistance R99 and grounded;Capacitor C37 is grounded;

[0020] The first boost type low-power power converter and the second boost type low-power power converter are connected between the capacitor C2 and the capacitor C3.

[0021] The utility model further sets up: the keyboard, encoder and pilot lamp all are connected with main control unit through I / O mode;The keyboard, encoder are used to gather user control signal, and signal flows from the keyboard, encoder to main control unit;The pilot lamp is controlled by main control unit and is used to indicate system state, provides state feedback for user, and signal flows from main control unit to pilot lamp.

[0022] The utility model further sets up: wireless module is connected with main control unit through serial asynchronous communication interface, and wireless module is used to realize frequency converter communication.

[0023] For example, control command is sent to the frequency converter, or state feedback is received from the frequency converter, and the signal is bidirectional, which can flow from the main control unit to the wireless module or in the opposite direction.

[0024] The utility model further sets up: liquid crystal display is connected with main control unit through serial peripheral interface, and liquid crystal display is used to display system information, including current state and parameter information.

[0025] In summary, the beneficial effects of the above technical solutions of the utility model are as follows:

[0026] The utility model discloses a first boost type low power consumption power converter can be realized by the enable signal control of main control unit closing, thereby realizes the dynamic management of the power consumption of wireless module power supply of first boost type low power consumption power converter, has reduced the power consumption to a certain extent.

[0027] Secondly, due to the addition of boost type low power consumption power conversion, the whole system can obtain stable 3.3V voltage, even if the battery voltage is lower than the minimum working voltage 2.2V of the system, the whole system can still work normally, solve the problem that the system cannot work normally after the battery voltage is lower than 2.2V under the prior art, and the endurance of the product is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment description, obviously, the drawing in the following description is only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0029] Figure 1 It is the remote control circuit system structure diagram for the rope saw frequency converter in the embodiment of the utility model;

[0030] Figure 2 It is the power supply input circuit schematic diagram for the embodiment of the utility model;

[0031] Figure 3 It is the second boost type low power consumption power converter partial circuit diagram for the embodiment of the utility model, and B interface connects the A interface in Figure 2 ;

[0032] Figure 4 It is the first boost type low power consumption power converter partial circuit diagram for the embodiment of the utility model, and D interface connects the C interface in Figure 3 ;

[0033] Figure 5 It is the frequency converter top layer design circuit diagram in the embodiment of the utility model;

[0034] Figure 6 It is the main control unit circuit diagram for the embodiment of the utility model;

[0035] Figure 7 It is the keyboard circuit diagram for the embodiment of the utility model;

[0036] Figure 8 It is the indicator lamp circuit diagram for the embodiment of the utility model;

[0037] Figure 9 It is the encoder circuit diagram for the embodiment of the utility model;

[0038] Figure 10 Circuit diagram of the liquid crystal display screen of the utility model embodiment;

[0039] Figure 11 Circuit diagram of the wireless module of the utility model embodiment.

[0040] In the drawings, the components represented by each reference numeral are listed as follows:

[0041] 100, main control unit, 200, first boost type low power consumption power converter, 300, second boost type low power consumption power converter, 400, indicator light, 500, keyboard, 600, wireless module, 700, encoder, 800, liquid crystal display screen. DETAILED DESCRIPTION

[0042] In order to make the personnel in the art better understand the technical scheme of the utility model, the technical scheme of the utility model is described clearly and completely below in combination with the drawings of the utility model, based on the embodiments in the present application, other similar embodiments obtained by the person skilled in the art without making creative labor should belong to the protection scope of the present application. In addition, the direction words mentioned in the following embodiments, such as 'up', 'down', 'left', 'right' and the like are only the directions of the drawings, therefore, the direction words used are used to illustrate but not to limit the utility model.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0044] As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. It should also be understood that the term "comprising" or "having" etc., specifies the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but does not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, the terms used in the specification include any and all combinations of the related listed items.

[0045] The utility model will be further described below in combination with the drawings and preferred embodiments.

[0046] Embodiment:

[0047] As Figures 1-5As shown in the preferred embodiment of the utility model, a remote controller circuit for a rope saw frequency converter, comprising a main control unit 100, a liquid crystal display screen 800, a wireless module 600, a keyboard 500, an encoder 700, an indicator lamp 400, a first boost type low-power power converter 200, and a second boost type low-power power converter 300.

[0048] As shown in the preferred embodiment of the utility model, the first boost type low-power power converter 200 is connected to the wireless module 600, and is used to provide stable power supply for the wireless module 600. Figure 1 、 Figure 5 As shown in the preferred embodiment of the utility model, the enable signal of the first boost type low-power power converter 200 is connected to the main control unit 100 through an I / O mode, and the main control unit 100 controls the working state of the first boost type low-power power converter 200 through the enable signal.

[0049] The second boost type low-power power converter 300 is connected to the main control unit 100, the liquid crystal display screen 800, the keyboard 500, the encoder 700, and the indicator lamp 400, respectively, and is used to provide stable power supply for these unit circuits.

[0050] The first boost type low-power power converter 200 and the second boost type low-power power converter 300 are connected to the power input circuit; the enable signal of the second boost type low-power power converter 300 is connected to the power input circuit through a pull-up resistor R1, and the enable signal of the first boost type low-power power converter 200 is grounded through a pull-down resistor R21.

[0051] As shown in the preferred embodiment of the utility model, the first boost type low-power power converter 200 comprises a control chip U5, a capacitor C19, a capacitor C20, a capacitor C21, a resistor R8, a resistor R9, and an inductor L4. Figure 4 As shown in the preferred embodiment of the utility model, one end of the capacitor C19 is connected to the VIN pin of the control chip U5, and the other end is grounded; one end of the resistor R9 is grounded, and the other end is connected to the resistor R8; one end of the resistor R8 away from the resistor R9 is connected to the VOUT pin of the control chip U5; the FB pin of the control chip U5 is connected between the resistor R8 and the resistor R9; the VOUT pin of the control chip U5 is also connected to the capacitor C20 and the capacitor C21, respectively; the capacitor C20 and the capacitor C21 are grounded through the GND pin of the control chip U5.

[0052] The VIN pin of the control chip U5 is connected with the second step-up low-power power converter 300 and the power input circuit respectively.

[0053] The EN pin of the control chip U5 is connected with the main control unit 100, one end of the pull-down resistor R21 is connected between the EN pin of the control chip U5 and the main control unit 100, and the other end is grounded. One end of the inductor L4 is connected with the VIN pin of the control chip U5, and the other end is connected with the SW pin of the control chip U5.

[0054] One end of the inductor L1 is connected with the VOUT pin of the control chip U5, and the other end is connected with the power output end VCC3.

[0055] In combination Figure 3 As shown in the figure, the second step-up low-power power converter 300 comprises a control chip U3, a capacitor C14, a capacitor C17, a capacitor C18, a resistor R6, a resistor R7 and an inductor L2. One end of the capacitor C14 is connected with the VIN pin of the control chip U3, and the other end is grounded. One end of the resistor R7 is grounded, and the other end is connected with the resistor R6. The end of the resistor R6 away from the resistor R7 is connected with the VOUT pin of the control chip U3. The FB pin of the control chip U3 is connected between the resistor R6 and the resistor R7. The VOUT pin of the control chip U3 is also connected with the capacitor C17 and the capacitor C18 respectively. The capacitor C17 and the capacitor C18 are grounded.

[0056] The VIN pin of the control chip U3 is connected with the first step-up low-power power converter 200 and the power input circuit respectively.

[0057] The EN pin of the control chip U3 is connected with the pull-up resistor R1, and the pull-up resistor R1 is connected with the power input circuit. One end of the inductor L2 is connected with the VIN pin of the control chip U3, and the other end is connected with the SW pin of the control chip U3.

[0058] The VOUT pin of the control chip U3 is also connected with the power output end VCC2 and the power output end VCC1 respectively. The VOUT pin of the control chip U3 is also connected with the inductor L3 between the power output end VCC1. The inductor L3 has a filtering effect.

[0059] In combination Figure 2As shown, the power input circuit includes a power input terminal VCC, capacitors C1, C2, C3, and C37, resistors R2, R3, and R99. The power input terminal VCC is connected to resistor R2, capacitors C1, C2, and C3, and the battery power supply module. Capacitors C1, C2, and C3 are all grounded. Resistor R2 is connected to the external main control unit, capacitor C37, and resistor R3. Resistor R3 is connected to resistor R99 and then grounded. Capacitor C37 is grounded.

[0060] The first boost low-power power converter 200 and the second boost low-power power converter 300 are connected between capacitor C2 and capacitor C3.

[0061] like Figure 1 , Figure 5 As shown, the keyboard 500, encoder 700, and indicator light 400 are all connected to the main control unit 100 via I / O. The keyboard 500 and encoder 700 are used to collect user control signals, which flow from the keyboard 500 and encoder 700 to the main control unit 100. The indicator light 400 is controlled by the main control unit 100 and is used to indicate the system status and provide status feedback to the user; the signal flows from the main control unit 100 to the indicator light 400. In this embodiment, the circuit diagram of the main control unit 100 is as follows. Figure 6 As shown; the circuit diagram of the keyboard 500 is as follows. Figure 7 As shown; indicator light 400 includes multiple LED indicator lights, Figure 8 The diagram shown is the circuit structure of one of the LED indicator lights. Multiple LED indicator lights can be set according to this structure; the encoder 700 circuit diagram is as follows. Figure 9 As shown, in this embodiment, the encoder 700 includes a first encoder and a second encoder. Figure 9 Figure (a) shows the circuit diagram of the first encoder. Figure 9 Figure (b) in the diagram is the circuit diagram of the second encoder.

[0062] like Figure 1 , Figure 5 As shown, the wireless module 600 is connected to the main control unit 100 via a serial asynchronous communication interface, and is used to communicate with the frequency converter. The circuit diagram of the wireless module 600 is shown below. Figure 11 As shown.

[0063] The LCD screen 800 is connected to the main control unit 100 via a serial peripheral interface. The LCD screen 800 is used to display system information, including current status and parameter information. The circuit diagram of the LCD screen 800 is shown below. Figure 10 As shown, the LCD screen 800 includes a control chip U1, an LCD base, and a backlight power supply chip U2. Figure 10 Figure (a) shows the connection circuit diagram between the control chip U1 and the main control unit 100.Figure 10 Figure (b) in the above figure is a schematic diagram of MISO interface connection in serial peripheral interface; Figure 10 Figure (c) in the above figure is a connection circuit diagram of liquid crystal seat, backlight power supply chip U2 and main control unit 100.

[0064] It should be noted that VCC corresponds to 1.8-3.3V in the above figure, which is the power input of the first boost low-power power converter 200 and the second boost low-power power converter 300; VCC1 and VCC2 belong to the same power network, which corresponds to the output 3.3V of the second boost low-power power converter 300 in the above figure, and is used to supply power to the rest of the device except the wireless module 600; VCC3 corresponds to the output 3.3V of the first boost low-power power converter 200, which is used to supply power to the wireless module 600. Figure 1 Figure 1 During operation, for the second boost low-power power converter 300, when the battery is connected, the capacitor C14 starts to charge. Since the EN pin is connected to high level through the resistor R1, the control chip U3 will be in working state by default. When the voltage of the VIN pin reaches the starting voltage of the control chip U3, the control chip U3 starts to work, and the capacitors C17 and C18 also start to charge. The internal logic of the control chip U3 collects the voltage of the voltage divider network composed of the resistors R6 and R7 through the FB pin, and calculates the voltage of the VOUT pin through the voltage. When the voltage of the VOUT pin is greater than or equal to 3.3V, the SW pin does not act, and is in a static state. At the same time, the VIN pin and the VOUT pin are in a through state in the control chip U3, and the voltages of the VIN pin and the VOUT pin are equal.

[0065] When the voltage of the VOUT pin is less than 3.3V, the SW pin starts to act, and enters a periodic switching state. At this time, the voltage of the VOUT pin is equal to the sum of the induced electromotive force of the inductor L2 and the voltage of the VIN pin. The internal logic of the control chip U3 adjusts the induced electromotive force of the inductor L2 by controlling the switching time (duty cycle of PWM signal) of SW, so as to adjust the voltage of the VOUT pin, and ensure that the voltage of the VOUT pin is not lower than 3.3V. When the voltage of the VIN pin is lower than the closing voltage of the control chip U3, the control chip U3 stops working.

[0066] For the first boost low-power power converter 200, when the battery is connected, the capacitor C19 starts to charge. Since the EN pin is connected to low level through the resistor R21, the control chip U5 will be in stop state by default. When the main control unit 100 sets it to high level, the control chip U5 starts to work. The working principle is completely consistent with that of the second boost low-power power converter 300.

[0067] For the first boost low-power power converter 200, when the battery is connected, the capacitor C19 starts to charge. Since the EN pin is connected to low level through the resistor R21, the control chip U5 will be in stop state by default. When the main control unit 100 sets it to high level, the control chip U5 starts to work. The working principle is completely consistent with that of the second boost low-power power converter 300.

[0068] ​When the system needs to enable the wireless module 600 to communicate, the host unit 100 controls the first boost low-power power converter 200 to start through the enable signal, and the wireless module 600 starts to work together. When the work is finished, the host unit 100 controls the first boost low-power power converter 200 to close through the enable signal, thereby realizing dynamic management of the power consumption of the wireless module 600, and reducing the power consumption to a certain extent. Secondly, due to the addition of the boost low-power power converter, the whole system can obtain a stable 3.3V voltage, and even if the battery voltage is lower than the minimum working voltage 2.2V of the system, the whole system can still work normally, solving the problem that the system cannot work normally after the battery voltage is lower than 2.2V in the prior art. The comprehensive effect is to greatly improve the endurance of the product.

[0069] Finally, it should be noted that the above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A remote controller circuit for a rope saw inverter, characterized by The main control unit, LCD, wireless module, keyboard, encoder, indicator light, first boost low-power power converter and second boost low-power power converter are included. The first boost low-power power converter is connected with the wireless module, and the enable signal of the first boost low-power power converter is connected with the main control unit through I / O mode.

2. A remote control circuit for a rope saw frequency converter according to claim 1, characterized in that, The first boost low-power power converter and the second boost low-power power converter are connected on the power input circuit, and the power input circuit is connected with the battery power supply module. The enable signal of the second boost low-power power converter is connected with the power input circuit through the pull-up resistor R1, and the enable signal of the first boost low-power power converter is grounded through the pull-down resistor R21.

3. A remote control circuit for a rope saw frequency inverter according to claim 2, characterized in that, The first boost low-power power converter includes control chip U5, capacitor C19, capacitor C20, capacitor C21, resistor R8, resistor R9 and inductor L4. The VIN pin of the control chip U5 is connected with the second boost low-power power converter and the power input circuit.

4. A remote control circuit for a rope saw frequency inverter according to claim 3, characterized in that, The EN pin of the control chip U5 is connected with the external main control unit, one end of the pull-down resistor R21 is connected between the EN pin of the control chip U5 and the main control unit, and the other end is grounded. The VOUT pin of the control chip U5 is connected with one end of the inductor L1, and the other end of the inductor L1 is connected with the power output terminal VCC3.

5. A remote control circuit for a rope saw frequency inverter according to claim 2, characterized in that, The second boost low-power power converter includes control chip U3, capacitor C14, capacitor C17, capacitor C18, resistor R6, resistor R7 and inductor L2. The VIN pin of the control chip U3 is connected with the first boost low-power power converter and the power input circuit. The EN pin of the control chip U3 is connected with the external main control unit.

6. A remote control circuit for a rope saw frequency inverter according to claim 5, characterized in that, The EN pin of the control chip U3 is connected with the pull-up resistor R1, and the pull-up resistor R1 is connected with the power input circuit; one end of the inductor L2 is connected with the VIN pin of the control chip U3, and the other end is connected with the SW pin of the control chip U3; The VOUT pin of the control chip U3 is also connected with the power output end VCC2 and the power output end VCC1 respectively, and the inductor L3 is further connected between the VOUT pin of the control chip U3 and the power output end VCC1.

7. A remote control circuit for a rope saw frequency inverter according to claim 2, characterized in that, The power input circuit comprises a power input end VCC, capacitors C1, C2, C3, C37, resistors R2, R3 and R99; the power input end VCC is connected with the resistors R2, capacitors C1, C2, C3 and the battery power supply module respectively, and the capacitors C1, C2 and C3 are grounded; the resistor R2 is connected with the external master control unit, the capacitor C37 and the resistor R3 respectively; the resistor R3 is connected with the resistor R99 and then grounded; and the capacitor C37 is grounded. The first and second boost type low-power consumption power converters are connected between the capacitors C2 and C3.

8. A remote control circuit for a rope saw frequency inverter according to claim 1, characterized in that, The keyboard, the encoder and the indicator lamp are connected with the master control unit through the I / O mode; the keyboard and the encoder are used for collecting user control signals, and the signals flow from the keyboard and the encoder to the master control unit; the indicator lamp is controlled by the master control unit and is used for indicating the system state and providing state feedback for the user, and the signals flow from the master control unit to the indicator lamp.

9. A remote control circuit for a rope saw frequency inverter according to claim 1, characterized in that, The wireless module is connected with the master control unit through the serial asynchronous communication interface, and is used for realizing the communication of the frequency converter.

10. A remote control circuit for a rope saw frequency inverter according to claim 1, characterized in that, The liquid crystal display screen is connected with the master control unit through the serial peripheral interface, and is used for displaying system information, including the current state and parameter information.

Images