JP2001149494A - Operation display device for fire pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation display device for a fire pump wherein various kinds of controls and displays are possible, and which is excellent in operability and safety as well. SOLUTION: Respective keys of an operation display panel 18 emit an operation accepting sound to indicate the acceptance of the operation for each operation. Also, on the operation display panel 18, a numeral display section 58, which displays the motion information of a fire pump such as an engine revolution number, a cooling water temperature, a discharging pressure and a discharging flow rate with 7 segments by corresponding with key operations, is provided. On the operation display panel 18, not only the numeral values but also messages such as errors of sensors and the pump operating state are displayed. For an engine stop/reset key 53, the operation becomes valid only when the key is continuously operated for a specified period of time. Also, when a power source key 51 is pressed, the zero-setting of a water pressure detecting sensor can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire pump operation display unit, and more particularly to a fire pump operation display device capable of not only controlling the operation of a pump but also displaying its status.

[0002]

2. Description of the Related Art Conventionally, a fire pump has been provided with an operation display section on which switches, keys, various meters and the like are arranged for operation control and status display. For example, a portable fire pump has a power supply O on its upper surface.
An N / OFF switch, an engine throttle operation key, a discharge water pressure gauge, and the like are arranged. Then, the operator performs a throttle operation or the like while watching various meters, and appropriately adjusts the operation state of the pump.

[0003]

However, in the conventional operation display section, data necessary for engine control, such as the engine speed and the engine cooling water temperature, are not always displayed. There were also many parts that were judged based on experience based on this. Further, since the meters arranged are also analog meters, there is also a problem that the pointer is not stabilized due to the pulsation of the discharge pressure or the like and the reading thereof is not easy. In particular, if the controller is located away from the pump body so that remote operation is possible, it is not possible to make a judgment based on engine sound or the like, and it is not possible to accurately grasp the pump state and perform remote operation. Was.

On the other hand, it is difficult to say that the operability and erroneous operation of the switches and keys disposed on the operation display unit are also considered, and it is desired to improve the operation checkability and prevent unexpected contact. Was rare.

An object of the present invention is to provide an operation display device for a fire-fighting pump which can perform various controls and displays and is excellent in operability and safety.

[0006]

An operation display device for a fire pump according to the present invention includes an operation unit for controlling operation of the fire pump, and a display unit for displaying an operation state of the fire pump. The unit emits an operation reception sound indicating reception of the operation for each operation, and the display unit displays operation information of the fire pump corresponding to the operation based on an operation on the operation unit. I have.

In the present invention, an operation acceptance sound such as "beep" is emitted for each operation, so that the operator can clearly recognize that the operation has been accepted by the apparatus by the operation. In addition, since the operation information corresponding to the operation is displayed, the operator can be alerted to the switching of the mode and the like, and can accurately know the operation state of the pump.

[0008] In this case, the display section may display a numerical value and a predetermined message in a seven-segment display. This makes it possible to digitally display various data, and not only numerical data,
Various messages such as "FULL" can be displayed. Also, without reading the analog meter guidelines,
The operation information can be confirmed on the digital display, and more accurate information on the state of the pump can be obtained in a wider range, so that more accurate pump operation can be performed. It should be noted that a plasma display can be used as the display section, and in this case, more various information can be displayed.

In addition, the display unit displays the number of revolutions of the engine for driving the fire pump, the cooling water temperature, the pump discharge pressure, and the like.
At least one of the pump discharge flow rates may be displayed. As a result, the engine speed, engine cooling water temperature,
Operation information such as the pump discharge pressure and the pump discharge flow rate can be easily known by one switching operation of the operator.

[0010] Further, when a failure is detected in any of the various sensors installed in the fire pump and being constantly monitored while the power is on, an error display set in advance corresponding to the failed sensor is displayed on the display unit. May be performed. This makes it possible to provide the pump itself with an abnormality diagnosis function of the sensor, and to notify the operator of the result by further utilizing the function of the display unit.

In addition, the operation unit may be provided with a key for validating the operation only when the operation is continuously performed for a predetermined time. For example, the apparatus stop key may be set as such a key. it can. This can prevent an unexpected erroneous operation from occurring due to an unexpected contact or the like. For example, in the case of the device stop key, the power is turned off only by touching the key.
N / OFF can be prevented.

On the other hand, the operation unit may be provided with a key for setting a pressure at the time of operation as a reference value for a water pressure detection sensor for detecting a water pressure supplied to the fire pump. Is higher than the pump position, the occurrence of an error in the sensor detection value due to the atmospheric pressure can be corrected, and more accurate control can be performed.

The operation display device may be provided not only on the fire pump but also on a remote control device separately provided from the fire pump.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory diagram showing an overall configuration of a fire fighting pump control system to which a fire fighting pump using an operation display device according to an embodiment of the present invention is applied;
FIG. 2 is an explanatory diagram showing a configuration of a control system in the system of FIG.

In the system shown in FIG. 1, a fire engine pump (hereinafter abbreviated as a pump) 1 is connected to a controller (control device) 3 (3a) via a twisted pair wire (twisted pair wire) 2.
To 3e) to form a network, and the pump 1 can be remotely controlled by the controller 3 as well. 1 and 2 show an example in which a portable pump is used as the pump 1. The pump 1 is a water-cooled pump.
A cycle engine and a vacuum pump driven by the cycle engine are provided. Then, water is pumped up from the water source 4 through the suction pipe 5 and sent to the fire hose 6 while adjusting the flow rate and the water pressure by the pump 1.

Here, the pump 1 is controlled by a main controller 10 composed of a microcomputer housed in the pump 1. As shown in FIG. 2, the main control unit 10 includes a control circuit 1 having an operation control circuit 11 and a communication control circuit 12.
3 is provided. In this case, the operation control circuit 11 and the communication control circuit 12 each include a CPU (not shown)
An M, a RAM, a timer, an input / output (I / O) unit, an A / D conversion unit, and the like are provided, and control of the engine and the like is performed based on detection data from various sensors.

The operation control circuit 11 includes various actuators such as an engine ignition device 21, a cell starter 22, a throttle drive motor 23, and an engine speed sensor 2.
4. Various sensors such as an engine coolant temperature sensor 25, an engine oil sensor 26, a fuel sensor 27, a water discharge pressure sensor 28, a water discharge flow sensor 29, a water pressure detection sensor 30, and a battery level sensor 31 are connected. The water pressure detection sensor 30 is a sensor that is used only when relay water supply is performed, and includes a water supply pressure from a pump at a preceding stage.
This is for detecting the pressure of the water supplied to the pump 1 (supply water pressure) and automatically starting the engine, controlling the throttle, stopping the engine, and the like.

The operation control circuit 11 constantly monitors the sensors when the power is turned on. This is because the fire pump is not a device that is always used, so it is difficult to grasp the failure in advance, and if a failure occurs during use, it is necessary to take immediate action. Therefore, the diagnosis process is started at the same time when the power is turned on. When the sensor output value is equal to or more than a certain level or equal to or less than a certain level, it is determined that an error has occurred and the error process is performed. That is, an error is displayed on the operation display panel 18 described later,
By notifying the operator of the occurrence of the error, the occurrence of the error can be immediately confirmed when the power is turned on. At this time, depending on the error state, the engine is stopped to prevent the failure from spreading due to the error, and to actively notify the operator of the error.

Further, the operation control circuit 11 automatically executes the zero setting of the water pressure detection sensor 30. This is because when the water source is higher than the pump position as in the case of rooftop water supply, an error occurs in the sensor detection value due to the atmospheric pressure, and accurate control can be performed by correcting the error. This correction operation is performed by pressing a power key 51 of the operation display panel 18 described later. The pressure at the time of the operation is set as a reference value (0), and the sensor detection values before and after the correction are set in the operation control circuit 11. Is stored in the RAM. Therefore, when the power of the pump 1 is turned on, the zero reset of the sensor is automatically executed, and when the power key 51 is pressed at a desired time, the zero reset can be performed at that time.

The main control unit 10 further includes a power supply circuit 14 connected to the battery and supplying power to the control circuit 13;
Operation input circuit 15 receiving instructions from operation display unit 17
And a display output circuit 16 for outputting various current data of the pump 1 to an operation display unit 17 in response to a request from an operator. In this case, the operation display section 17 has a configuration including an operation display panel 18 and a throttle operation key 19, and is arranged on the upper surface of the pump 1.

FIG. 3 is an explanatory diagram showing the configuration of the operation display section 17. On the operation display panel 18 side, various switch keys (operation section) and a display section are provided. In this case, in consideration of the convenience of the operator with many right-handed users, the operation display panel 1
An operation unit is arranged on the right side of 8 and a display unit is arranged on the left side. That is, a power key 51, an engine start key 52, an engine stop / reset key (device stop key) 53 are provided at the lower right, and an operation mode switching key 54 and a display switching key are provided at the upper right. 55 and a set value change key 56 are arranged respectively.

These keys are operated to “pick”
And the like, an operation sound (operation reception sound) is issued, and the operator can clearly recognize that the operation has been received by the apparatus, and alert the operator about switching of the mode and the like. The operation of the engine stop / reset key 53 is enabled only when the key is continuously operated for a predetermined time. That is, unless the key is continuously pressed for t seconds (for example, 3 seconds), the power is turned on / off.
Can not do. Therefore, it is possible to prevent the power from being easily turned on / off due to an erroneous operation such as an unexpected contact, and it is possible to prevent an unexpected erroneous operation from occurring.

On the left side of each key in the upper right part, a mode display lamp 57 for displaying the current operation mode is arranged. Each time the operation mode switching key 54 is pressed, the operation mode changes from “manual water discharge” to “automatic water absorption” to “relay water supply”.
The mode is switched in the order of “pressure control” → “flow rate control” → “manual water discharge”, and in response to this, the mode display lamp 57 also turns on the corresponding mode part.

In this case, when switching the operation mode,
In the operation display unit 17, a delay time is set between the mode switching and the mode determination, and the mode is not determined simultaneously with the mode switching. This is because, when the operation mode switching key 54 is pressed, the mode is switched immediately and the mode is settled. If the input water pressure equal to or more than the predetermined value is detected by the water pressure detection sensor 30, the mode is switched to the mode after “relay water supply”. This is because it may not be possible.

That is, in the "relay water supply" mode, when the input water pressure reaches a certain pressure, the engine is automatically started to start the relay water supply. For example, when receiving water from the previous pump or receiving water from the rooftop water tank, the input water pressure must be higher than the starting pressure due to subsequent changes in conditions despite the zero reset function described above. Is also assumed. At this time, when the operation mode is switched from, for example, "automatic water absorption" to "pressure control", the engine is started at the moment when the operation mode switching key 54 is pressed and the mode becomes "relay water supply", and "relay water supply" is set. A situation occurs in which the operation is started and fixed, and cannot be shifted to “pressure control”.

Further, once operating in the "relay water supply" mode, the mode immediately before the power is turned off is stored even if the power is turned off, and the operation is started from that mode at the next operation. Therefore, even if the power is turned off to stop the “relay water supply” mode, the apparatus operates in the “relay water supply” mode and cannot escape from the mode.

Therefore, in the pump 1, a delay time is provided between the mode switching and the mode determination to prevent the next mode from being immediately determined even when the operation mode switching key 54 is pressed, thereby preventing the relay mode from sticking. . That is, when the operation mode switching key 54 is pressed to move to the next mode, t
The mode is not determined for seconds (for example, 3 seconds), and the mode is determined only after t seconds. At this time, the mode display lamp 57 blinks during the delay time to indicate to the operator that the mode determination standby is in progress. When the mode is determined after elapse of t seconds, the display is turned on, and the operation in the mode starts. As a result, even when the input water pressure equal to or higher than the starting pressure is applied, the mode can be freely selected without causing the operation mode to be stuck.

In the upper left portion of the operation display panel 18, a numerical display section (display section) 58 for displaying 7 segments is arranged. Above the numerical value display unit 58, a numerical value attribute display unit 59 indicating the numerical value attribute shown therein is arranged, and on the right side thereof, a unit display unit 60 indicating the numerical value unit is arranged. Each time the display switching key 55 is pressed, the display mode changes from “engine speed” → “discharge pressure or discharge flow rate set value” → “discharge pressure or discharge flow rate measured value” →
The mode is switched in the order of “engine cooling water temperature” → “engine speed”, and in response to this, the numerical attribute display section 59 and the unit display section 60 are also lit in the corresponding mode.

As described above, in the pump 1, the operation information such as the engine speed, the engine cooling water temperature, the discharge flow rate, etc., which the operator could not know conventionally, can be easily known by one switching operation of the operator. Can be. Conventionally,
The discharge pressure read by the pressure gauge can also be confirmed on a digital display without reading the vibrating pointer. Therefore, regarding the state of the pump 1,
Accurate information can be acquired over a wider range, and more accurate operation can be performed.

The numerical value display section 58 displays not only numerical data but also various messages as operation information. For example, when the throttle opening is increased by the throttle operation key 19 and the throttle is fully opened and does not increase any more, a message "FULL" is displayed. In addition, a plasma display may be used as the numerical value display unit 58 instead of the 7-segment. In this case, when the engine start key 52 or the engine stop / reset key 53 is pressed, “START”,
A display such as "STOP" is also performed. Further, when the above-mentioned zero reset is performed, “0SET” is displayed,
When this is returned to the initial state, "INIT" (initial
Is displayed.

In addition, when an error is detected by the sensor abnormality diagnosis by the operation control circuit 11, an error display "Er" is displayed on the numerical value display section 58 in accordance with the type of the error.
r. 1 "is displayed. FIG. 4 is a table showing an example of the error code. For example, when "Err. 1" is displayed, it indicates that the water discharge pressure sensor 28 has failed. The release of the error display is performed by the engine stop / reset key 53. Further, not only an error display but also an alarm buzzer or the like may be activated at the same time.

In the lower left part of the operation display panel 18, an abnormality warning display section 61 is arranged. This abnormal warning display section 6
1 includes a fuel warning lamp 6 which is turned on when the remaining fuel amount falls below a predetermined value.
2. There is provided an engine oil warning lamp 63 which lights up when the engine oil remaining amount becomes lower than a predetermined value, and an engine cooling water temperature warning lamp 64 which lights up when the engine cooling water temperature becomes higher than a predetermined value. In addition, the abnormality warning display section 61 includes a drain cock warning light 65 that lights up when a drain cock for draining fuel is opened during long-term storage or the like, and a pump operation warning light 66 that lights up when the vacuum pump is operating. A battery level warning lamp 67 is provided which lights when the battery level falls below a predetermined position.

A throttle operation key 19 is provided below the operation display panel 18 so that the throttle valve can be opened and closed by operating the key.
In the pump 1, the throttle valve is opened and closed by a throttle drive motor 23 composed of a DC motor, and is controlled by an operation control circuit 11.

Conventionally, some fire pumps use a motor to open and close a throttle valve of an engine. However, the fire pump is limited to ON / OFF control of the motor, and delicate valve opening adjustment is performed. Did not. However,
A delicate throttle adjustment is required to automatically control the discharge pressure and the discharge flow rate, and it is difficult to obtain a constant output due to hunting or the like by simple ON / OFF control. Also, when performing relay water supply, it is necessary to finely adjust the discharge pressure, etc., following the pulsation of water supply from the previous stage,
Fine tracking control cannot be achieved by the ON / OFF control.

Therefore, in the pump 1, the speed of the throttle drive motor 23 is controlled in a plurality of stages to achieve fine adjustment of the opening with good followability. That is, a pulse voltage as shown in FIG. 5 is applied to the throttle drive motor 23, and its ON time / O
Depending on the duty ratio of the FF time, for example, speed control including 16 steps of forward rotation, 8 steps of reverse rotation, and 1 step of stop is performed. FIG. 5 is an explanatory diagram showing an example of a pulse voltage applied to control of the throttle drive motor 23.

In this control, the duty frame F (the length of one cycle of the pulse) of the pulse voltage can be arbitrarily set for each control stage. In FIG. 5, the duty frame F has two forward rotation stages. Is set smaller (F ₁ > F ₂ ). Furthermore, the duty frame F can be set arbitrarily in each control stage, and can be changed, for example, between when the motor is started and after that. In the first forward rotation stage in FIG. 5, the duty frame F at the time of startup is set to be small, and the duty frame F is gradually increased (F ₁ <F ₃ ).

Therefore, in this control, even if all the ON times t of the respective control stages are set to be the same, the duty frame F
, The duty ratio can be arbitrarily changed. Therefore, by setting one is ON time t _x, can be realized stepwise rotation control, phase adjustment can be easily performed.

The duty frame F of each control stage
And the speed may be controlled stepwise by making the length of the ON time t different. That is,
By setting the ON time t of the forward two-stage to be longer than the ON time t of the forward one-stage, it is also possible to make the motor rotation speed of the forward two-stage higher than the forward one-stage. Further, the length of the duty frame F and the length of the ON time t can be set arbitrarily, and a wider range of control can be executed.

As described above, in the pump 1, since the duty frame F can be arbitrarily set for each control stage, the range of the control form is widened, and more delicate control can be realized by a simple setting operation.

In the pump 1, an example is shown in which a DC motor is used as the throttle drive motor 23. However, the type of motor used is not limited to a DC motor. For example, a stepping motor or an AC motor may be used. good.
In this case, pulse control similar to that described above may be performed for a stepping motor, and frequency control may be performed for an AC motor using an inverter.

On the other hand, in the system shown in FIGS. 1 and 2, the pump 1 can be remotely controlled by the controller 3. That is, in the system, as shown in FIGS.
A network is constructed by connecting the twisted pair wires 2 that are less attenuated and less affected by noise as compared with the parallel type conducting wires, and perform distributed communication control between the pump 1 and the plurality of controllers 3. Many remote controls are realized.

In the present system, the controller 3 can be connected and disconnected at any place on the twisted pair line 2.
That is, they can be appropriately arranged like the controllers 3a to 3d in FIG. 1, and can be additionally provided (up to 255). Alternatively, the connector 7 may be provided like the controller 3e, and may be connected as needed.

As shown in FIG. 2, the controller 3
The control unit 70 includes a microcomputer, and includes a control circuit 73, a power supply circuit 74, an operation input circuit 75, and a display output circuit 76, similarly to the main control unit 10 of the pump 1. The control circuit 73 includes an operation control circuit 71 and a communication control circuit 72. The communication control circuit 72 is connected to the twisted pair line 2. The twisted pair line 2 is connected to the communication control circuit 12 of the main control unit 10 of the pump 1, and the controller 3 and the pump 1 exchange signals via the twisted pair line 2.

In this case, the system uses p-CSM
A (p-persistent, Carrier, Sense, Multiple, Access) network system is adopted. Even if the network becomes saturated at a tense site such as a fire, the throughput is kept high and the collision rate is maintained. It is set to suppress pulling.

FIG. 6 is an explanatory diagram showing a signal configuration in the p-CSMA system. As shown in FIG.
In the SMA system, each transmitted packet is a Beta
Sent following the 1 period and some Beta2 period slots. During the Beta1 and Beta2 periods, it is sufficient for all controllers 3 on the network to detect the start of signaling from other controllers 3 and to suppress their own signaling start in the next Beta2 slot. Has a width. Also, when each controller 3 is ready to transmit a packet, 1 to 1
Generate a random number up to 6. Then, the controller 3 determines which Beta2 during the next packet cycle.
Decide whether to transmit in a slot and avoid signal collisions.

The controller 3 has an operation display section 77 similar to that shown in FIG. 3, in which an operation display panel 18 and a throttle operation key 19 are arranged. The operation display unit 77 includes an operation input circuit 75 and a display output circuit 76.
Is connected to the control circuit 73 via the. When a key on the operation display panel 18 or the throttle operation key 19 is operated, a control signal is output from the communication control circuit 72 to the pump 1 via the twisted pair line 2 based on a command from the operation control circuit 71. That is, for example, when the engine start key 52 is operated by the controller 3a, the operation signal is transmitted to “the communication control circuit 72 → the twisted pair line 2 → the communication control circuit 12”, and the cell starter 22 is instructed by the operation control circuit 11. Is driven to start the engine of the pump 1.

On the other hand, the pump 1 sends various data such as the engine speed and the water discharge pressure to the twisted pair line 2. Then, the operation control circuit 71 of each controller 3
Acquires the data via the communication control circuit 72, and displays the data on the operation display panel 18 according to the selection of the operator. For example, when the display switching key 55 is operated to select the “engine speed” display, the operation control circuit 7
1 selects “engine speed” from the data acquired from the pump 1 and outputs the selected value to the display output circuit 76. As a result, the lamp of the “rpm” portion is turned on in the unit display section 60 of the operation display panel 18, and a numerical value such as “3000” is displayed on the numerical value display section 58.

In this case, in this system, all the controllers 3 including one pump have the same relationship, and the same operation and display can be performed by all the controllers 3. Therefore, even when the pump 1 is located away from the fire site, it is possible to control the pump 1 from an optimal position from near the site to the pump main unit. Note that the priorities between the controllers 3 are not set, and when commands conflict, the preceding command has priority. However, priorities are set for the contents of the commands themselves, and the commands on the safe side always take precedence. For example, when the engine start command and the engine stop command conflict at the same time or within a predetermined time, the stop command has priority and the engine is not started.

As described above, in this system, a network is constructed by using the twisted pair wires 2 which are inexpensive and lightweight, and which are easy to lay with high attenuation and noise, and the controller 3 controls the communication of the pump 1. This makes it possible to perform advanced remote control with simpler wiring than before. Therefore, it is possible to control not only the independently installed pump 1 as shown in FIG. 1 but also the pump of a portable pump loading vehicle from a remote place while monitoring the operation state thereof.

Although the invention made by the inventor has been specifically described based on the embodiment, the invention is not limited to the embodiment and can be variously modified without departing from the gist of the invention. Needless to say,

For example, in the above-described embodiment, a portable fire pump has been described as an example. However, the pump to which the operation display device of the present invention can be applied is not limited thereto, and is mounted on a vehicle, installed, or installed. For example, the present invention can be applied to various types of pumps.

Further, in the embodiment, the configuration in which water is supplied only by the pump 1 is shown, but it is also possible to connect a plurality of similar pumps to perform relay water supply. In this case, the main control unit of the last stage pump is the main control unit 10 in FIG.
The preceding pump acts as a controller. At this time, when the pump of each stage is set to the “relay water supply” mode and the water pressure detection sensor 30 detects a water pressure equal to or higher than a predetermined value, the start, throttle control, and stop of the engine are automatically executed. Then, by multi-stage control of the throttle drive motor 23, the water supply pressure and flow rate are controlled based on the water supply pressure and flow rate from the previous stage, and water is sent to the next stage.

[0053]

According to the operation display device for a firefighting pump of the present invention, each key of the operation display panel emits an operation acceptance sound for each operation, so that each time a key operation is performed, the device accepts the operation. Can be clearly recognized by the operator. Further, since the operation information corresponding to the key operation is displayed on the numerical value display section, the operator can be alerted to the switching of the mode and the like, and can know the operation state of the pump accurately.

Further, since the numerical value display section has a seven-segment display, various data can be digitally displayed, and not only numerical data but also various messages can be displayed. For this reason, the operation information can be confirmed on the digital display without reading the pointer of the analog meter, the accurate information on the state of the pump can be obtained over a wider range, and the pump can be operated more accurately.

Further, by displaying the engine speed, the cooling water temperature, the pump discharge pressure, the pump discharge flow rate, and the like on the numerical value display section, the operator can easily operate information such as the engine speed by one key operation. You can know.

Further, by displaying the error of the sensor on the numerical value display section, the function of the display section can be further utilized, and the result of the pump abnormality diagnosis function can be notified to the operator.

In addition, for example, by setting the engine stop / reset key on the operation display panel to be effective only when the key is continuously operated for a predetermined time, an erroneous operation due to an unexpected contact or the like is performed. Can be prevented from occurring. Therefore, in the case of the device stop key, it is possible to prevent the power from being turned on / off only by touching the key.

By providing a key on the operation display panel for zero-setting the water pressure detection sensor, for example,
Even in the case of a pump installation condition in which an error occurs in the sensor detection value, the correction of the sensor detection value can be performed automatically or arbitrarily, and more accurate control can be performed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an overall configuration of a fire pump control system according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a configuration of a control system in the system of FIG.

FIG. 3 is an explanatory diagram illustrating a configuration of an operation display unit.

FIG. 4 is a table showing an example of an error code.

FIG. 5 is an explanatory diagram showing an example of a pulse voltage applied to control of a throttle drive motor.

FIG. 6 is an explanatory diagram showing a signal configuration in the p-CSMA system.

[Explanation of symbols]

 1 Fire pump 17 Operation display section 18 Operation display panel 19 Throttle operation key 51 Power key 52 Engine start key 53 Engine stop / reset key 54 Operation mode switching key 55 Display switching key 56 Set value change key 57 Mode display lamp 58 Numeric display (Display unit) 59 Numerical attribute display unit 60 Unit display unit 61 Error warning display unit 77 Operation display unit

Claims (7)

[Claims] 1. An operation unit for controlling operation of a fire pump, and a display unit for displaying an operation state of the fire pump, wherein the operation unit receives an operation for each operation. A fire pump operation display device that emits a sound, and wherein the display unit displays operation information of the fire pump corresponding to the operation based on an operation on the operation unit. 2. The operation display device for a fire-fighting pump according to claim 1, wherein the display unit has a seven-segment display.
An operation display device for a fire pump, which displays a numerical value and a predetermined message. 3. The operation display device for a fire pump according to claim 1, wherein the display unit includes at least one of a rotation speed of an engine for driving the fire pump, a cooling water temperature, a pump discharge pressure, and a pump discharge flow rate. An operation display device for a fire pump, characterized by displaying one of them. 4. The fire-fighting pump operation display device according to claim 1, wherein the display unit has a failure in various sensors which are installed in the fire-fighting pump and are constantly monitored in a power-on state. When an error is detected, an error display set in advance corresponding to the failed sensor is displayed. 5. The operation display device for a fire-fighting pump according to any one of claims 1 to 3, wherein the operation unit includes a key for validating the operation only when the operation is continuously performed for a predetermined time. An operation display device for a fire pump, comprising: 6. The operation display device for a fire pump according to claim 5, wherein the key is a device stop key. 7. The fire-fighting pump operation display device according to claim 1, wherein the operation unit includes a water pressure detection sensor that detects a supply water pressure to the fire-fighting pump. An operation display device for a firefighting pump, comprising a key for setting a reference value as a reference value.